Name of enterprise: Linyi St. Chen advertising material Co., Ltd.
Contact: Xiong Maolin
Address: Wang Cun, Lanshan District Shandong city of Linyi Province Wang Zhen Liu
The PP plate is extruded from polypropylene. It has good chemical stability, heat resistance and electrical insulation. It can be used in the condition of 90--100 C, corrosion resistance, non-toxic, and good physical and mechanical properties. It is mainly used for food packaging, chemical containers and water treatment devices. Chemical and physical properties of PP board: PP is a semi crystalline material. It is harder than PE and has a higher melting point. Because the PP temperature of the homopolymer is more brittle than above 0 degrees C, many commercial PP materials are irregular copolymers with 1~4% ethylene or a higher ratio of ethylene content of the pliers. The copolymer type PP material has lower thermal distortion temperature (100 degree), low transparency, low gloss and low rigidity, but has stronger impact strength. The strength of PP increases with the increase of ethylene content.
PP plate extrusion line features: the extruder screw is designed according to the rheology principle of PP-R, which has strong plasticizing ability, good dispersion and uniform melt temperature. The output of the same kind of equipment is among the top in the country. The screw structure is advanced and the speed is accurate, which can meet the technological needs of changing the melt fluidity of PP-R. During processing, the residence time of PP-R melt in extruders and tube dies is suitable, so as not to get too long heating time to oxidize. Optional equipment: PP board production line composite marking line extrusion device, in the extrusion of PP plate, combined with PP color bar, to facilitate the use of PP board or other needs of identification. The diameter of the screw extruder is 30mm, and the frequency of the screw is variable speed. The design of the whole machine is small and smart. It is easy to use and is very popular with customers.
PP board features: mechanical properties, excellent electrical properties, strong acid and alkali resistance, good chemical stability, but low softening point. It is suitable for making thin plate, insulation layer of wire and cable, sealing parts and so on.
1. amorphous material, small moisture absorption, poor fluidity. In order to improve the fluidity, prevent the occurrence of bubbles, plastic can be dry in advance. Mold casting system should be short, gate section should be large, no dead angle. Mould must be cooled, surface chrome plating.
2., because of its corrosive and fluidity characteristics, it is better to use special equipments and moulds. All products must be added different kinds and quantities of auxiliaries according to needs.
3., it is easy to decompose. At 200 degree temperature, contact with steel and copper is easier to decompose. When it decomposes, it escapes and corrode. Irritating gas. The forming temperature range is small.
PP sheet (polypropylene) product characteristics: impact resistance, corrosion resistance, high heat resistance, non-toxic and tasteless, smooth surface, low density, light weight, welding will not produce poison gas, easy processing. Application scope: circuit board and metal surface treatment cylinder groove, circuit board wet treatment equipment, plant exhaust emission system equipment, wastewater and other environmental protection system equipment, half body industry related equipment. It is widely used in the manufacture of three-phase shunt. The glass fiber PP reinforced board has good strength, rigidity, heat resistance, low temperature impact, anticorrosion, arc resistance and low shrinkage. The softening temperature of VEKA in PP is 150 C. Because of the high crystallinity, the material has good surface stiffness and scratch resistance. There is no environmental stress cracking in PP. In general, PP is modified by adding glass fiber, metal additive or thermoplastic rubber. Adding 30% of glass additives can reduce the shrinkage rate to 0.7%. Homopolymer and copolymer PP materials have excellent resistance to moisture absorption, acid and alkali resistance and solubility. However, it has no resistance to aromatic hydrocarbons such as benzene, solvents, chlorinated hydrocarbons, carbon tetrachloride, etc.