Sichuan Aishipaier New Material Technology Co., Ltd.

In today's rapid development of science and technology, a magical material is quietly changing our lives - phase change materials.   Like an intelligent energy manager, it plays a key role in many fields by virtue of its unique nature.     01 Revealing phase change materials PCM - Phase Change Material is a material that changes its physical state with temperature and absorbs or releases a large amount of energy in the process.   The absorption and release of this energy comes from the reorganization of its internal microstructure. Just like when ice melts into water, it absorbs heat, and when water solidifies into ice, it releases heat, but the power of the phase change material is more powerful and efficient.     02 Diverse families of phase change materials -- Organic phase change materials Paraffin is a common organic phase change material, which will undergo solid-liquid phase change at a specific temperature. Organic phase change materials have many advantages, such as large latent heat of phase change, stable chemical properties, almost no supercooling phenomenon and small volume change when melting, so in the field of building energy conservation, it is often used to prepare thermal insulation materials to help buildings maintain comfortable temperatures in different seasons. -- Inorganic phase change materials Crystalline hydrated salts are typical, such as sodium sulfate decahydrate. This kind of material has high enthalpy of phase change, large thermal conductivity and relatively low cost. However, the problems of supercooling and phase separation limit its application. In the field of solar energy storage, researchers try to overcome these problems by modifying it to make it better store solar heat. -- Composite phase change materials In order to synthesize the advantages of various types of phase change materials, organic and inorganic phase change materials are combined by a specific process. For example, the combination of paraffin and bentonite not only improves the energy storage performance of the material, but also enhances its stability. This composite method makes up for the deficiency of a single material and makes the performance of phase change materials more excellent. ​   03 Wide range of applications -- Construction field Integrate phase change materials into building materials, such as gypsum board, concrete, etc. In the hot summer, it can absorb excess heat in the room and prevent the indoor temperature from being too high. In the cold winter, it can release the stored heat and play a role in insulation. This not only improves indoor comfort, but also significantly reduces building energy consumption, helping to achieve green building goals. -- Electronic equipment With the high degree of integration of electronic devices, the problem of heat dissipation becomes more and more serious. Phase change materials can be made into heat sinks or filled in the equipment, when the chip and other parts of the temperature rise, phase change materials quickly absorb heat and phase change, so as to effectively control the temperature of the equipment, ensure the stable operation of electronic equipment, extend the service life. -- Cold chain logistics During the transportation of fresh items such as food, maintaining a low temperature environment is crucial. The cold storage agent made of phase change materials can maintain low temperature for a long time, without frequent replacement of the ice pack, ensuring the quality and safety of the goods, and providing strong support for the efficient operation of the cold chain logistics. ​   04 Obtaining Methods ASPAiER is a professional manufacturer of phase change materials, has been developed for more than 20 years, can be customized temperature coverage -80℃ to 180℃, including gel, powder, particles and other forms of phase change materials and thickening gel series of products. After the company passed the ISO9001 quality management system certification, strict implementation of the quality management system, its products through the test are: Shanghai Chemical Research Institute test report, national danger test report, Switzerland SGS content non-toxic safety test, Bette REACH report, ROHS report and so on. With the joint efforts of all employees, the products have been successfully sold to the United States, Germany, Ireland, Japan, South Korea and other countries and regions. If you need, welcome to contact us, contact information on the home page of the website "Contact us" view.

Ice packs and dry ice are both common refrigerated items, which can effectively maintain the freshness and quality of food. However, for these two kinds of refrigerated and fresh products, their heat preservation time and application methods are also different.     First, the main ingredient of the fresh-keeping ice pack is made of polymer compound gel or purified water mixture, which needs to be frozen into ice cubes in the freezer or freezer before use. The heat preservation time of this kind of fresh-keeping ice bag depends on its material and manufacturer. In general, they can maintain the freshness and quality of food for 24~48 hours.   However, if you put them in an airtight container or use them with other frozen items, they may stay fresh for longer. Second, dry ice is a relatively commonly used refrigerated preservation item, which can quickly reduce the temperature of food to a very low level, greatly reducing food spoilage. However, when using dry ice, pay special attention to the method of operation and the holding time.   The key to the thermal insulation performance of dry ice is its weight and ambient temperature. In general, the freshness and quality of food can be maintained between 24 and 48 hours. In addition, it is important to pay attention to safety when using dry ice. Because carbon dioxide gas is produced in the air, it needs to be used in an environment with good air circulation and avoid contact with the skin or mouth.     All in all, both ice packs and dry ice are very useful refrigerated items. Therefore, we need to choose the items that are suitable for us according to the actual situation, and use the correct methods and precautions of both to ensure the freshness and quality of the food, and also ensure our own safety.     Sichuan Ashpyer New Material Technology Co., Ltd. (hereinafter referred to as "Ashpyer"), formerly known as: Chengdu Xinhai Huicai Biotechnology Co., Ltd., was involved in the research and development of ice packs in 1997, and has won more than 20 invention patents and utility model patents.   Temperature detection and other value-added services in one of the whole cold chain logistics services, the company in 2015 the product upgrade to the product traceability system synchronization, from the original product cold storage, cold insulation, temperature and humidity monitoring to the current product production date, expiration date, batch number and other information, to create a unique identifiable barcode, product quality traceability, and then according to the identification code of the packaging associated code, query the flow of goods in the circulation process, to achieve the purpose of anti-counterfeiting and anti-channeling, It provides a complete set of information solutions for product quality traceability, anti-counterfeiting and anti-channeling of production enterprises, so as to achieve the purpose of improving product quality, improving service and improving management level.   The application of the company's one-stop intelligent product line such as warehouse temperature and humidity intelligent monitoring system, video intelligent monitoring system, power room environmental monitoring system, and water immersion sensor series. Its product range covers many industries and application fields such as industrial control, medicine, communications, agriculture, meteorology, and electric power. Our products have the advantages of high accuracy, fast response time, good long-term stability, strong adaptability and excellent quality.   After the company passed the ISO9001 quality management system certification, the company strictly implements the quality management system, and its products have passed the testing including: Shanghai Research Institute of Chemical Industry test report, national hazardous chemical test report, Switzerland SGS non-toxic safety test of contents, REACH report, ROHS report, etc. With the joint efforts of all employees of the company, the products have been successfully sold to United States, Germany, Ireland, Japan, Korea and other countries and regions.   All employees of "Ashpyer" will be based on their own duties, adhering to the "customer first, continue to provide solutions for customers." Adhere to the core values of "continuous learning", "continuous innovation" as the driving force for development, relying on cutting-edge scientific research technology, advanced production processes, superior product quality and perfect service system to continuously meet the growing needs of customers.     Sichuan Ashpel New Material Technology Co., Ltd Tel: 028-67933699 84906988 E-mail: xhhc@xhhc.net Website: http://www.xhhc.cn Hotline: 400-6463-400

Composite phase change heat storage technology through the composite sensible heat storage and phase change heat storage materials, to avoid the sensible heat storage technology and phase change heat storage technology many shortcomings, has become a hot spot at home and abroad in recent years, but the traditional skeleton materials use natural minerals or their secondary products, large-scale mining or processing will destroy the local ecological environment and consume a large amount of fossil energy, in order to reduce the impact of the above problems on the environment, solid waste can be used to prepare composite phase change heat storage materials.   Calcium carbide slag is acetylene, polyvinyl chloride and other industrial solid waste produced in the production process, China produces more than 50 million tons per year, and the application of calcium carbide slag in the cement industry has been saturated, resulting in a large number of calcium carbide slag open air accumulation, ditch reclamation, serious damage to the local ecological environment, urgent need to explore new resource utilization methods.     In order to absorb industrial solid waste calcium carbide slag on a large scale and prepare low-carbon and low-cost composite phase change heat storage materials, researchers from Beijing University of Civil Engineering and Architecture proposed to use calcium carbide slag as the skeleton material to prepare Na2CO3/calcium carbide slag composite phase change heat storage materials by cold-pressing sintering method, and the specific steps are shown in the figure.   Considering the deformation, surface molten salt leakage and heat storage density, although the heat storage density of sample NC4 is the largest among the three composite phase change heat storage materials, the mass ratio of the composite phase change heat storage material corresponding to sample NC5 is considered to be the optimal ratio.   Subsequently, the team analyzed the macroscopic morphology, heat storage performance, mechanical properties, microscopic morphology, cyclic stability and material component compatibility of the composite phase change heat storage materials.   And mainly obtained the following conclusions: 01 The calcium carbide slag component has good compatibility with Na2CO3, which can replace the traditional natural skeleton material to synthesize Na2CO3/calcium carbide slag composite phase change heat storage materials, and large-scale resource recycling of calcium carbide slag to realize the low-carbon and low-cost preparation of composite phase change heat storage materials.   02 The 52.5% calcium carbide slag and 47.5% phase change material Na2CO3/composite can be used to prepare a composite phase change heat storage material with excellent performance, with no change and no leakage, with a heat storage density of up to 993 J/g, a compressive strength of 22.02 MPa, and a thermal conductivity of 0.62 W/(m•K) within 100~900 °C. After 100 heating/cooling cycles, the heat storage performance of the sample NC5 remained stable.   03 The thickness of the film layer determines the inter-particle force of the skeleton material and the compressive strength of the composite phase change heat storage material, and the composite phase change heat storage material prepared under the optimal mass fraction of the phase change material has the best mechanical properties.   04 The thermal conductivity of the skeleton material particles is the main factor affecting the heat transfer performance of the composite phase change heat storage materials, and the impregnation and adsorption of the phase change materials in the pore structure of the skeleton materials improves the thermal conductivity of the skeleton material particles, thereby improving the heat transfer performance of the composite phase change heat storage materials.  

"Phase change energy storage is a new type of energy storage. As a class of efficient energy storage materials, phase change energy storage materials can not only reduce building energy consumption and improve indoor environmental comfort through the organic combination with buildings, but also make extensive use of renewable energy and improve the utilization rate of fossil energy. Li Haijian, director of the Phase Change Energy Storage Research Office of China Building Materials Research Institute and professor-level senior engineer, recently pointed out in an interview with a reporter from China Building Materials News that compared with other energy storage methods, phase change energy storage has the advantages of high energy storage density, small size, constant temperature control, significant energy-saving effect, wide range of phase change temperature selection, and easy control, and has important application value and broad development prospects in many fields.   The calcium carbide slag component has good compatibility with Na2CO3, which can replace the traditional natural skeleton material to synthesize Na2CO3/calcium carbide slag composite phase change heat storage materials, and large-scale resource recycling of calcium carbide slag to realize the low-carbon and low-cost preparation of composite phase change heat storage materials.     The industry ushered in a golden period of development   "At present, the country vigorously advocates the use of clean energy and the promotion of low-energy buildings, which has ushered in a golden opportunity for the development of the phase change energy storage industry." Li Haijian pointed out that in advocating the use of clean energy and renewable energy, the country is stepping up efforts to control pollution in response to the increasingly serious problem of fossil pollution.   Since 2015, the northern provinces have accelerated the implementation of coal-to-electricity projects in response to the problem of winter heating pollution. With the progress of these projects, the pollution problem of the northern heating season has been greatly solved, but there are still many problems. One of the problems is that after the coal to electricity, the heating cost of the people has risen sharply. In order to encourage the people to vigorously use cheap valley electricity, the relevant departments also stipulate that the use of energy storage electric heating must be used. This provides a great opportunity for the development of phase change materials.   In terms of building low-energy buildings, Li Haijian believes that low-energy buildings not only need to improve the insulation level, but also increase the energy storage capacity of the building. Now the building is mostly a concrete structure, compared with the old earthen wall building, the heat preservation and heat storage capacity is poor, resulting in colder in winter and hotter in summer, and the building thermal insulation is improved, the building has no storage capacity, loses the heat exchange with natural energy, and the free natural energy is wasted. To solve this problem, the heat storage capacity of the building should be improved.   "The current buildings are basically lightweight buildings, low thermal inertia, poor heat storage capacity, in order to improve the heat storage capacity of the building, it is impossible to adopt the earth wall like the old building in the past, the heat storage capacity of the building can be improved by adding phase change materials, the heat storage capacity of phase change materials is strong, the heat storage density per unit volume is high, and the heat storage requirements of the building can be met with less mass of phase change materials.   The heat storage capacity of phase change building materials will show strong advantages, and phase change concrete, phase change mortar, phase change flooring, etc. will be vigorously developed. When talking about the development of the industry, Li Haijian said.     It can reduce the energy consumption of buildings   According to the reporter of China Building Materials News, there are two main ways for phase change energy storage materials to be used in buildings: one is "passive application". Phase change materials are compounded with traditional building materials to make phase change building materials, increase the thermal quality of the wall, and use as a "passive" energy storage material, relying on the change of room temperature or receiving solar radiation heat and other ways to passively absorb / release heat, the heat storage of the same volume phase change building materials is several times to dozens of times that of ordinary building materials, and the requirements of heat storage are realized without increasing the overall load-bearing of the building.   Phase change building materials mainly include phase change gypsum board, phase change concrete, phase change mortar, phase change coating, phase change wallboard, phase change energy storage floor or ceiling, etc. At present, phase change building materials have been widely used in building energy conservation and have good development prospects.   The other is "active application". Phase change materials are combined with solar heating, electric heating, floor heating, air conditioning, ventilation and refrigeration and other equipment to become an "active" energy storage body, which can be actively adjusted and controlled through heat exchange devices and heat exchange mediums, such as phase change heat collectors, phase change heat storage boxes, phase change heating systems, etc.   "Generally speaking, the slow development of phase change energy storage building materials or component products at home and abroad may be caused by the relatively high cost of phase change building materials and the low degree of integration with existing building design." Li Haijian introduced that relevant enterprises and research institutions at home and abroad are trying to promote the market-oriented development of phase change building materials, such as establishing calculation methods and standards related to existing energy-saving indicators to promote the development of the industry.   In addition, phase change building materials enterprises can also start from the design of low-energy buildings, to overcome the integration of existing building design, such as the phase change materials made into phase change blankets, phase change tiles for the building envelope structure, the application form is flexible, the construction is fast and easy to recycle, the phase change materials are made into phase change bags, and then combined with the insulation board to prepare the phase change insulation integrated board, which is also a good innovation.   Li Haijian pointed out that in the heating and cooling industry, the development speed of phase change energy storage is relatively fast, there are already companies at home and abroad specializing in the operation of related markets, such companies are basically integrated with the existing basic business, their original business is mainly engaged in the heating or refrigeration industry, the addition of phase change energy storage elements can improve the efficiency of the original system, reduce the cost of system operation, especially the storage of renewable energy, the energy transfer of valley power, energy storage system has more advantages, As an efficient means of energy storage, phase change energy storage is increasingly favored by enterprises.     Future development needs to take multiple measures at the same time   "At this stage, the high cost of materials, long time limit for return on investment, and poor economics of building phase change energy storage products have become important factors restricting the further development and promotion of building energy storage." Li Haijian pointed out that there are still the following problems in the development of phase change energy storage materials: First, the standard system is not perfect.   Standards are the basis for the industrialization of technology, and they are also an important factor to support the healthy development of the industry. Due to the lack of relevant technical standards, there are many limitations and inconveniences in the production and application of phase change energy storage materials, phase change building materials, and phase change device systems. Second, the national energy storage policy support is low. The development cycle of new technologies, especially new energy, is generally relatively long, and in the early stage of development, it usually needs the support of the country's industrial policy.   Although the party and the state attach great importance to the development of the energy storage industry, the energy storage industry support policies are insufficient, and there is a lack of detailed implementation measures, such as technology development roadmap, industrial development guidance, relevant incentive policies, cost-benefit sharing and accounting methods, etc., and the development of the energy storage industry is relatively slow.   In order to achieve the high-quality development of phase change energy storage materials, Li Haijian suggested that the first is to formulate national phase change standards and engineering specifications to support the development of phase change energy storage materials.   Formulate and publish technical standards, procedures, construction methods and general atlases of building energy storage (energy storage) technology and product equipment in a timely manner, strengthen the publicity, implementation and supervision of standards, and provide a strong scientific basis and solid technical support for standardizing and guiding the application of building energy storage (energy storage) technology. The second is to improve the key materials, manufacturing processes and energy conversion efficiency of building phase change energy storage, and further solve the problems of stability, safety and durability in large-scale applications.   At present, most of the phase change energy storage technology is in the hands of scientific research institutes and university researchers, so as to improve the conversion rate of scientific research achievements, evaluate the practical application effect and long-term application efficiency, and provide monitoring data to improve the large-scale application demonstration.     (This article was originally published in the 6th edition of China Building Materials News on December 19)