Views: 7 Author: Site Editor Publish Time: 2019-10-10 Origin: Site
Sheet machine is the main production of PP sheet molding plastics, is a new type of thermosetting molding plastics, used in chemical, mechanical, pharmaceutical, electrical, electronic industry, sheet machine is a device to add thickener, filler, mold release agent, curing agent and other components of polyester resin, impregnation, glass fiber yarn, both sides with film cover, forming sandwich structure of an unsaturated polyester glass fiber to increase the production equipment of composite materials.
The Chinese name of PP board is polypropylene, which is a kind of engineering plastics with excellent comprehensive performance. PP plate/sheet refers to PP sheet and sheet obtained by extrusion method with copolymer or homopolymer PP, which are divided according to different thickness.
PP plate/sheet features: smooth surface, high strength, high stiffness, high hardness, difficult to burn, insulation, moisture-proof, heat insulation, anti-corrosion, anti-impact, no deformation, anti-light, anti-fading, good weather resistance and other advantages.
PP plate/sheet is widely used in chemical, mechanical, pharmaceutical, electrical, electronic industries and other structural materials.
PP (polypropylene) has excellent physical, mechanical, electrical and thermal properties, so the PP have the laudatory title of "the king of transparent plastic, sheet made of polypropylene material, are common international adoption of a new type of high strength, light, sound insulation, energy-saving materials, there are other common building decoration materials (such as glass, Angle of glass, toughened glass, hollow glass, organic glass, etc.) the incomparable advantages. Therefore, since its appearance in the late 1980s, it has rapidly entered the market of architectural decoration materials and been widely praised and praised by architectural design, decorative engineering, environmental protection, advertising, agriculture and horticulture.
Physical properties are reflected in the low density, strength and stiffness, hardness and heat resistance are better than low pressure polyethylene, can be used at about 100 degrees, has a good electrical performance and high frequency insulation is not affected by humidity, but at low temperature becomes brittle, not resistant to mold easy to aging. Suitable for making general mechanical parts, corrosion resistant parts and insulation parts.
PP plate/sheet with thickness between 0.2-0.4mm is mainly used for food packaging, such as disposable transparent food packaging boxes in supermarkets, disposable PP water cups, etc. Its main raw materials are all PP (such as domestic t30s, f401, 2401, etc.), and a small amount of random copolymer PP.
The sheet material between 0.5-0.8mm in thickness is mainly used for environmental protection. As a water treatment material, it can be used underwater for seven or eight years. The main raw material used is copolymerized PP.
0.8-6 mm thickness of PP plate/sheet is mainly used in chemical tank lining, can also be used for water treatment in environmental protection. The PP sheet material of thickness 3mm or so is used for making decorations such as plastic Christmas tree. PP hollow plate material thickness is generally in 2-7mm, mainly used for the production of document package, packing case, greenhouse plate, bath booth partition plate, decorative plate, exhibition plate, wall plate, lighting plate, etc., its raw materials are mainly block copolymer PP.
PP plate thickness of more than 6mm is mainly used in industry, raw materials are generally block copolymerized PP, also some manufacturers use random copolymerization and homogeneous PP.