Nanping TyrFil LD PUR-MDI hot sale,
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2. High surface hardness, wear resistance and toughness. 3. Compared with pure nylon, the mechanical strength, rigidity, heat resistance, creep resistance and fatigue strength of strong nylon are greatly reduced, and the elongation, mold shrinkage, moisture absorption, and wear resistance are reduced. 4. Main properties Determined by the bonding strength, content, aspect ratio and orientation of fiber and resin. It should be stored in a dry and clean warehouse, and the transportation should be protected from moisture and sunlight, and the packaging bag should be prevented from being damaged. According to the performance and fire resistance requirements of the material, consider whether to add tougheners and fire retardants. , ⑤Structure: not only can play a role in mechanics, but also depends on the appearance.
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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Nanping TyrFil LD PUR-MDI hot sale,
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It can be seen from the figure that whether it contains glass fiber or not, in the initial stage of the polymerization reaction, the monomer conversion rate and nylon molecular weight increase with the reaction time. At 15 minutes, the two systems basically reach equilibrium, but the glass fiber system The polymerization rate is still lower than that of pure nylon polymer. Mold shrinkage is reduced and dimensionality. The life span of nylon cord is 3 times longer than that of viscose, and the impact absorption energy is large, so the tire can run on bad roads. Since the nylon cord stretches greatly, when the car stops, the tire deforms and produces a flat point, and the car jumps at the beginning of the start. Great. Its melt viscosity is low, and its tensile strength is close to the yield strength, which is more than twice as high as ABS.
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