Kiben Composite Materials (Kunshan) Co., Ltd. talked about the classification and application of common foam

Foam is made of plastic particles after foam, from the name point of view, foam seems to be a common familiar single product, but in fact according to the characteristics of the material distinction, foam is also divided into many kinds. There are many common foam materials in our daily life, and there are many kinds of materials, respectively: PU foam, anti-static foam, conductive foam, EPE, anti-static EPE, PORON, CR, EVA, bridge PE, SBR, EPDM, etc. They have a series of characteristics such as easy to use, flexible bending, ultra-thin volume, reliable performance and so on. Here, Kempen Composite Materials (Kunshan) Co., Ltd. will give you a detailed introduction to several common foam categories and applications.

PORON foam

Poron foam generally refers to the United States Rogers and Japan Inoue Poron joint venture company production of a high-performance high-density polyurethane foam, developed by the United States Rogers company, usually known as high-density sponge. Poron presents a high density, fine and uniform cellular structure, with high sealing, high energy absorption, high buffering, no pollution, high flame retardant, high compression reduction and other characteristics, according to the needs of practical applications, divided into many different densities and hardness. A wide range of applications PU foam (polyurethane) PU foam is made of polyurethane material foam.

PU is polyurethane, PU leather is the skin of polyurethane components. Now clothing manufacturers widely used this material to produce clothing, commonly known as imitation leather clothing.PU is the abbreviation of English ploy urethane, chemical Chinese name called polyurethane its quality is good or bad, good bags more imported PU leather. PU leather is generally the opposite side of the second layer of leather, coated with a layer of PU resin on the surface, so it is also called film leather. Its price is cheaper and the utilization rate is high. With the change of the process is also made into various grades of varieties, such as imported two layers of cowhide, because of the unique process, stable quality, novel varieties and other special points, for the current high-grade leather, the price and grade are no less than the first layer of leather. PU leather and real leather bags have their own characteristics, PU leather bags look beautiful, easy to take care of, low price, but not wear-resistant, easy to break; Real leather is expensive and troublesome to care for, but durable.

Conductive foam Conductive foam is coated with conductive cloth on a flame retardant sponge, and after a series of treatments, it has good surface conductivity and can be easily fixed on the device to be shielded with adhesive tape. Shielding materials are available in different profile shapes, mounting methods, UL grades and shielding effectiveness. Conductive foam can be divided into: Aluminum foil foam, conductive fiber foam, gold-plated foam, carbon-plated foam can be blanked I/O, The rectangular liner and panel liner can be supplied with conductive adhesive or no conductive adhesive low residual deformation to ensure the long-term performance of the product is widely used in PDP TV, LCD display, LCD TV, mobile phone, laptop computer, MP3, communication cabinet, medical equipment and other electronic products as well as military, aerospace fields 3, aluminum foil foam Aluminum foil foam The foil cloth made of soft pure aluminum foil and glass fiber is used instead of conductive cloth to wrap flame retardant foam. Surface impedance ≤0.016Ω, with excellent metal shielding performance, its temperature resistance up to 130℃, low cost, can meet the needs of product cost pressure. Aluminum foil cloth conductive foam excellent performance, shielding performance of more than 100db high elasticity, reduce the contact surface conductive impedance corrosion resistance, improve the connector assembly metal coating compatibility.

korel Foam Korel (Microcellular polyurethane foam) is a high-tech foam produced by the French group Saint-Gobain with excellent compressibility and high resilience, moisture resistance and chemical resistance. This foam is divided into K series and E series. And can fully meet the needs of a sealed, energy-absorbing environment. Pressure sensitive adhesive can be applied on one side according to the demand, eliminating the need for you to make EPP foam polypropylene plastic foam material is a high crystallization polymer/gas composite material with excellent performance, EPP foam, EPP application field is more and more extensive. IT products, electronic communication equipment, liquid crystal display, plasma color TV, precision electronic components, precision instruments and meters have begun to use EPP as packaging materials. Special and superior performance has become the fastest growing environmental protection new compression buffer heat insulation material CR foam a general type of special rubber, with good physical properties of general rubber, this foam also has excellent properties such as fire resistance, oil resistance, chemical corrosion resistance, so that it occupies an important position in a variety of synthetic rubber Main features:

1, with excellent sealing, avoid gas release and atomization. 2, excellent compression deformation resistance, that is, the elasticity is durable, can ensure that the accessories get long-term shock protection. 3, with flame retardant, does not contain harmful and toxic substances, will not remain, will not pollute the equipment, is not corrosive to gold. 4, can be used in a variety of temperature range. It can be used from minus 40 degrees Celsius to 90 degrees Celsius. 5, the surface has excellent wettability, easy to bond, easy to make, easy to punch.

6, the engineering polyurethane formula provides a wide modulus range - 2-90 psi @ 25% deviation - to meet the requirements of more design flexibility is more suitable for mechanical products protection, including vehicles, ships, doors, luggage window seal, precision machinery, medical equipment, furniture, glass buffer protection, air conditioning, refrigeration equipment insulation, heat preservation, heat preservation. Civil building waterproof, mechanical equipment, residential sound wall sealing, moisture-proof, shock-proof

EPE, also known as pearl foam polyethylene foam non-crosslinked closed cell structure, is a new type of environmentally friendly foam packaging material. It is composed of low density polyethylene resin by physical foaming to produce numerous independent bubbles. The defects of fragile, deformed and poor recovery of ordinary foamed glue are taken into account. It has many advantages such as water proof, moisture proof, shock proof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, strong collision resistance and so on. It also has good chemical resistance. Widely used in electronic and electrical appliances, instrumentation, computers, audio, medical equipment, industrial computer box, lighting, crafts, glass, ceramics, home appliances, spraying, furniture, wine and gift packaging, hardware products, toys, fruits, shoes packaging, daily necessities and other products packaging. After adding antistatic agents and flame retardants, EVA foam EVA plastics and resins are characterized by good softness, rubber-like elasticity, good flexibility, transparency and surface gloss at -50 ° C, good chemical stability, anti-aging and ozone resistance, and non-toxicity. Good mixing with fillers, good coloring and molding processing. EVA foam can be injection molding, extrusion, blow molding, calendering, rotoplastic vacuum thermoforming, foaming, coating, heat sealing, welding and other molding processes.

(1) Film, sheet and laminated products: with sealing, adhesion, softness, strength and toughness, tightness, suitable for elastic packaging film, heat shrink film, agricultural film, food packaging film, laminated film, can be used to do the middle layer of polyolefin laminated film.

(2) General supplies: with flexibility, environmental stress cracking resistance, good weather resistance advantages, suitable for industrial materials such as power wire insulation bags, household appliances accessories, window sealing materials, etc. It is also one of the most familiar foam, which can be used in automobiles, air conditioners, refrigerators, freezers, household appliances, engineering refrigeration and refrigeration and freezing. Roller skates, sports shoes lining material, sports insole, bag back pad, surfboard, kneeling pad; Base material of foam tape products; Ice storage, cold building, light roof, building installation and other building thermal insulation materials. EPDM - EPDM rubber EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated diolefins, which began commercial production in 1963. Worldwide consumption is 800,000 tons per year. The most important characteristic of EPDM is its superior oxidation resistance, ozone resistance and erosion resistance. Epdm rubber belongs to the polyolefin family, it has excellent vulcanization characteristics. Among all rubbers, EPDM has the lowest specific gravity. It can absorb a lot of fillers and oil without affecting the characteristics. This makes it possible to make rubber compounds at low cost.