Journalism
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In fact, there are many thermal insulation materials in the market, but polyurethane foam board is one of the three common internal wall thermal insulation materials. It is a special polyurethane product that can be filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure resistant aerosol tank. When the material is ejected from the aerosol tank, the foamed polyurethane material will rapidly expand and solidify with the air or the moisture in the contacted matrix
Published on: June 11, 2019 Number of hits: 24
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Polyurethane is an important synthetic polymer material, especially polyurethane foam is widely used in furniture, building energy conservation and other fields. However, polyurethane not only needs non renewable petroleum resources as raw materials in the production process, but also is difficult to be recycled after use, which is not conducive to sustainable development. A new study is expected to change this situation. The synthesis of polyurethane requires polyols and isomers
Published on: June 11, 2019 Number of hits: 28
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The excellent polyurethane PU board commonly used thermal insulation materials include: rock wool, glass fiber wool, polystyrene), integrated houses, steel structure workshops, etc., which have good thermal insulation effect. High strength polyurethane PU board uses high strength steel plate as the base material (with high tensile strength), plus the most advanced design and roll forming. Therefore, the polyurethane PU board mobile house has excellent structural characteristics. Below
Published on: June 11, 2019 Number of hits: 27
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Soft polyurethane foam refers to soft polyurethane foam plastic, which is a flexible polyurethane foam plastic with certain elasticity. It is a polyurethane product with the largest amount of polyurethane products. The polyurethane soft foam is mostly of open cell structure, which has low density, good elastic recovery, sound absorption, breathability, heat preservation and other properties. It is mainly used as furniture cushion, mattress, vehicle seat cushion and other cushion materials
Published on: June 11, 2019 Clicks: 91
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We often see that some design units point out in the technical specification of anti-corrosion coating that polyurethane finish or acrylic polyurethane finish should be used as the finish paint, and then the paint purchasing unit makes an inquiry from the paint manufacturers according to this name in the inquiry list, but the prices quoted by the manufacturers are different, or even several times different. Why? This is because there are many kinds of polyurethane finish
Published on: June 11, 2019 Number of hits: 70
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For all kinds of articles in life, our feelings about them are intuitive, such as the concepts of hardness, elasticity, toughness, brittleness, etc. This information obtained through intuitive feeling and perception is generally called qualitative judgment. Qualitative judgment is usually vague, imprecise and not conducive to comparison. Just as we know that iron is hard and steel is hard, which one is harder, except for the two
Published on: June 11, 2019 Clicks: 261
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Polyurethane itself is non-toxic, but no material can be 100% pure. Polyols, isocyanates, surfactants, catalysts, foaming agents and some functional additives are required for the synthesis of polyurethane foam
Published on: June 11, 2019 Clicks: 454
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Polyurethane has two main raw materials, isocyanate (including TDI, MDI, PIDI, HDI, etc.) and polyether polyol. Among them, isocyanate is relatively toxic, especially TDI is recognized as toxic, carcinogenic and irritating. In addition, other ingredients used in the foaming process mainly include: 1. Catalyst, mainly amine catalyst and tin catalyst. Amine catalysts
Published on: June 11, 2019 Number of hits: 501
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The full name of polyurethane foam adhesive is one component polyurethane foam sealant, commonly known as foaming agent, foam adhesive, PU sealant, in English, PUFOAM, which is the cross combination of aerosol technology and polyurethane foam technology. Polyurethane foam adhesive is a special polyurethane product that can be filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure resistant aerosol tank. When the material is discharged from the aerosol tank
Published on: June 11, 2019 Clicks: 409
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Sustainable development has always been the focus and inevitable development trend of the chemical industry. In the era of pure pursuit of maximum benefits, the development model of "waste water, waste water and waste water", global warming, resource tension and other serious problems have been brought about by the development model of "waste water, waste water and waste water". The increasing large-scale environmental pollution problems have caused people's concern about the deterioration of the living environment and the earth's climate. In the new era, sustainable development is not new
Published on: June 11, 2019 Number of hits: 277
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Thermoset soft foam and elastomer have certain thermal softening plasticity at 100-220 ℃, which can achieve mutual bonding without using adhesive. Combined with the subsequent molding steps, uniform recycled products can be obtained, which is hot pressing. Bayer (now Covestro) has developed a recycling process for waste elastomer products, crushing waste into particles for preheating,
Published on: June 11, 2019 Clicks: 438
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As a polymer material with excellent performance, polyurethane thermal insulation material has become the fifth largest plastic after polyethylene, polyvinyl chloride, polypropylene and polystyrene, and the global total output has exceeded 10 million tons/year. In recent years, China's polyurethane industry has made great progress, and has been widely used in refrigerator, container, leather, shoemaking, textile and other fields. Of course, in our
Published on: June 11, 2019 Clicks: 90
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1. Thermal insulation performance: thermal conductivity of polyurethane is 0.022W/(m · K), EPS is 0.041W/(m · K), XPS is 0.028W/(m · K). 2. Tightness: EPS and XPS are bonded with seams and cavities, and the external air can easily flow through the seams and cavities, affecting the insulation performance. If the factor that there are gaps in the cavity is taken into account
Published on: June 11, 2019 Clicks: 42
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Polyurethane itself is non-toxic, but no material can be 100% pure. Polyols, isocyanates, surfactants, catalysts, foaming agents and some functional additives are required for the synthesis of polyurethane foam
Published on: June 21, 2019 Number of hits: 59
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The full name of polyurethane foam adhesive is one component polyurethane foam sealant, commonly known as foaming agent, foam adhesive, PU sealant, in English, PUFOAM, which is the cross combination of aerosol technology and polyurethane foam technology. Polyurethane foam adhesive is a special polyurethane product that can be filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure resistant aerosol tank. When the material is discharged from the aerosol tank
Published on: June 21, 2019 Number of hits: 48
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1、 Brief introduction of polyurethane (PU), which is called polyurethane in full, is a general term for macromolecular compounds containing repeated carbamate groups on the main chain. It is an organic polymer material that is reacted by polyisocyanates and polyols and has multiple carbamate segments. It was first developed by Bayer in 1937
Published on: June 21, 2019 Number of hits: 58
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According to the in-depth research and prospect forecast report of China's polyurethane industry from 2015 to 2020, the development of China's polyurethane industry in the future will be mainly driven by five aspects, namely, the total population, the automobile industry, the improvement of building energy conservation, environmental protection requirements and the leisure and entertainment industry. The consumption of PU products in China will maintain an average annual growth rate of 15%. Polyurethane product manufacturer
Published on: July 22, 2019 Number of hits: 60
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The full name of polyurethane pu product foam adhesive is one component polyurethane foam sealant, commonly known as foaming agent, foam adhesive, PU sealant, in English, PUFOAM, which is the cross combination of aerosol technology and polyurethane foam technology. Polyurethane foam adhesive is a special polyurethane product that can be filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure resistant aerosol tank. When the material is transferred from
Published on: July 23, 2019 Number of hits: 47
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Compared with traditional insulation pipes, directly buried prefabricated insulation pipes have outstanding advantages: 1. Good insulation performance, heat loss is only 25% of traditional pipes, long-term operation can save a lot of energy, significantly reducing energy costs. 2. With strong waterproof and corrosion resistance, it can be directly buried into the ground or water without the need for pipe trenches
Published on: July 24, 2019 Number of hits: 66
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What are the series of PU mold release agent? First of all, PU release agent is also called polyurethane release agent. Release agent has become an essential industrial raw material in industrial production, which plays a very important role in mold forming and the appearance and quality of product demoulding. Dongguan Meiya Chemical Co., Ltd. has developed the following non
Published on: August 6, 2019 Clicks: 47
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PU product material is a new kind of decorative material in this society. Its main feature is that it is very light, and it is also fireproof, waterproof, moth proof, mildew proof and crack proof. In terms of construction, it is easy for the staff to operate, suitable for various indoor and outdoor decorative materials, and is a new type of green decorative materials! Main products
Published on: August 13, 2019 Number of hits: 88
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For all kinds of articles in life, our feelings about them are intuitive, such as the concepts of hardness, elasticity, toughness, brittleness, etc. This information obtained through intuitive feeling and perception is generally called qualitative judgment. Qualitative judgment is usually vague, imprecise and not conducive to comparison. Just as we know that iron is hard and steel is hard, which one is harder, except for the two
Published on: July 16, 2019 Number of hits: 41
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The correct use of polyurethane materials can meet the high-performance requirements of automobiles in terms of power, comfort, appearance, interior softening, lightweight, service life, etc. It is an indispensable important material in modern automobile manufacturing. 1 Application of polyurethane materials Application of polychlorinated materials in automobile industry
Published on: August 8, 2019 Clicks: 71
