PMMA 711 Shanghai pen technology

 Our stock out of stock products PMMA particles have: PMMA 711 Shanghai pen of Use: Other Features Note: Features: thermoplastic resin, with good, easy workability and oil resistance and solvent resistance, free colored, easy to injection molding. Important parameters: melt flow rate: 1.5 g / 10min Density: 1.02 g / cm3 molding shrinkage rate: 0.5% of the notched impact strength: 22 Tensile strength: 50 MPa Vicat softening point: 88 ℃ light transmittance: 85% Manufacturer : Shanghai Pen chemical PMMA H12 Evonik Degussa uses: Other features Note: high transparency, good impact resistance, heat resistance, high Important parameters: melt flow rate: 7 g / 10min density: 1.19 g / cm3 absorbent Rate: 0.3% mold shrinkage: 0.3% notched impact strength: 16 Tensile strength: 65.5 MPa Elongation: 4% bending strength: 117 MPa flexural modulus: 3380 MPa Hardness: 94 Vicat softening point: 105 ℃ heat deformation temperature: 93.9 ℃ light transmittance: 92% Manufacturer: German Evonik Degussa PMMA CA-81 US Plaskolite West Uses: Other Features Note: a high molecular weight, lubricated, good processing stability, low to no odor Important parameters: melt flow rate: 2.3 g / 10min density: 1.29 g / cm3 Tensile strength: 68.9 MPa Elongation: 4.6% bending strength: 111 MPa Vicat softening point: 107 ℃ heat distortion temperature: 95.6 ℃ through Light rate: 92% Manufacturer: American Plaskolite West molding company focused on (1) the weight of the finished product, you must feed tube forming capacity of 70% or less, such as the level beyond the need for large machines, so the material of high hardness, high viscosity, oil usually a need to increase the pressure of the motor drive torque is enough. (2) the raw material in the feed tube flow resistance is smaller, less pressure loss. Feeding tube group can be plated 0. 03-0 04mm, increase the hardness and smoothness can be small resistance |. Force. (3) their mobility is better abs increased injection pressure and speed to be a change in shape, prone to depression and internal bubble at both temperatures drop pressure is difficult to convey difficult place. (4) melt rate may slow down about 40% -50%, in order to increase the generation of heat of fusion, melting plastic gauge to be more appropriate to between 70 ~ 90kg / cm2, thereby adjust the level of the material temperature. (5) When a shrink or vacuum bubbles occur, other conditions can not be solved, can be added back pressure between 5kg / cm2 ~ 20kg / cm2 to solve, such as the back pressure is too high it will overheat and shape materials driving difficult. (6) If a heated tube to stay too long, easy to produce too much gas, sometimes due to the resistance of gas leaving the screw is not easy to drive, you can use the constant injection and pine retreat to exclude gas. (7) cooling the finished shortening flesh will not be deformed, it can make use of warm water is cooled slowly, the temperature difference between the center of the epidermis and not too large, and so can prevent occurrence of vacuum bubbles shrink. (8) When finished there residual stress when exposed to solvents, product strength will be reduced in order to eliminate the stress of available heat-production, material temperature increase, the injection pressure can be reduced, such as by compression molding the internal stress is almost non-existent. (9) If a number of finished products have been produced, in order not to be too high due to internal stress and scrapped, an annealing treatment may be implemented, and so ease the tension in the outer surface of the stress relaxation. (10) followed by material recycling, the best raw materials for cleaning feeding tube, set 240 ° C or so. (11) formed at low temperatures, the temperature of the feed tube rear section a bit higher than that does not produce a sharp screw different sound. [5] Poly (methyl methacrylate) is excellent performance as a transparent material widely used in the following areas: 1. Lamps, lighting equipment, such as a variety of household lamps, fluorescent hood, taillights, lights, road signs. 2. Optical glass, such as the manufacture of various lenses, mirrors, prisms, television screen, a Fresnel lens, a camera lens transmittance. 3. Preparation of various instruments dial, casing, dial. 4. Preparation of optical fiber. 5. Commercial advertising windows, billboards. 6. Glass cockpit, aircraft and automotive bulletproof glass (with intermediate interlayer material required). 7. A variety of medical, military, architectural glass. The factory offers a variety of material reports prove COA MSDS UR yellow card SGS, etc. For more detailed information, please send an email or call 13825743960 landline 13825743960@163.COM advice: 0769-82932991 82932992 ext 8013 to obtain information; Contact: Mr. Wang