Qinhuangdao Andur M-25 (1,4BD) PUR-ester/MDI hot sale,
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At the same time, nylon can also be molded with color, thereby avoiding expensive painting steps. In terms of technology, try to control the temperature of the barrel not to be too high, and the injection speed not to be too fast, so as to avoid discoloration of the product and degradation of mechanical properties due to the decomposition of the rubber material due to the high temperature. The reason is that the development of the industry is facing three major bottlenecks. The surface of the glass fiber is easy to absorb water, and the water will consume the caprolactam anionic active species, and the polymerization speed will slow down, or even not polymerize. The molecular chain can only move significantly at a very high temperature,
Material performance
1. It is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene. The melt adhesion is enhanced, the melt viscosity is reduced, and the performance is unchanged compared with polytetrafluoroethylene. This kind of resin can be directly processed into products by ordinary thermoplastic molding methods.
2. The long-term use temperature is -80-260 degrees. It has excellent chemical resistance, corrosion resistance to all chemicals, the lowest friction coefficient among plastics, and good electrical properties. Its electrical insulation is not affected by temperature. Influence, known as the “Plastic King”.
3. Its chemical resistance is similar to polytetrafluoroethylene and better than vinylidene fluoride.
4. Its creep resistance and compressive strength are better than PTFE, with high tensile strength and elongation of 100-300%. Good dielectric properties and excellent radiation resistance. High flame retardancy.
5. Non-toxic: It is physiologically inert and can be implanted in the human body.
V0 level
1. Suitable for making corrosion-resistant parts, wear-reducing parts, sealing parts, insulating parts and parts.
2. High-temperature wire and cable insulation, anti-corrosion equipment, sealing materials, pump valve bushings, and chemical containers.
Molding performance 1. Crystalline material, low moisture absorption. It can be processed into products by the usual processing methods of thermoplastics.
3. Poor fluidity, easy to decompose, and produce corrosive gas during decomposition. It is advisable to strictly control the molding temperature not to exceed 475 degrees, the mold should be heated to 150-200 degrees, and the pouring system should have low resistance to material flow.
4. Translucent pellets, injection molding and extrusion molding. The molding temperature is 350-400 degrees, and the temperature above 475 degrees is likely to cause discoloration or air bubbles. And pay attention to demoulding will be more difficult.
5. Because the molten material has a corrosive effect on the metal, the mold needs to be electroplated with chromium for long-term production.
PFA FEP PTFE has similar chemical properties, but FEP can only be used below 200 degrees, and PTFE cannot be injection molded.
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Qinhuangdao Andur M-25 (1,4BD) PUR-ester/MDI hot sale,
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Strong fibers are usually added, such as glass fiber, carbon fiber, and other organic fibers. The size and shape of injection molded parts, as well as cooling rate and uniformity are also influencing factors. Higher mold temperature tends to produce good flow, higher weld line strength, and lower product internal force, but the molding cycle will be. Recently, the American Alliance Company has launched a flame-retardant nylon packaging material, the trade name is Staticule MPP, which can control the development of static electricity. Through metalized products, the company’s curing process has achieved flame retardancy and electrostatic charge. The film is used to make rolls, belts, shields and masks, etc. 3. Material: pipe wall, PVC fiber coating, spiral wire, elastic steel wire.
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