Best plastic raw materials

The cheapest domestic (Teflon) raw material injection molding particle valve material/cable material
Professional agent for the production of plastic raw materials domestic/imported agents/producers/wholesalers
Zhang Sheng:
Technical parameters :
Appearance, white particles (translucent particles) powder/odor/none
Purity,
Dispersion fineness,
Scraper fineness meter melting index/.3, 3℃ ,
Standard relative density/,@3/3℃
Melting point℃
Thermal decomposition temperature, ,.,
Solubility/Clear and transparent, no impurities℃,
Moisture content, .
Glass transition temperature ℃
Embrittlement temperature - below ℃
Crystallization melting point about ℃
Parameter table:
Property test standard data Property test standard data< br/> Density./Volume resistance
Water absorption. Surface resistance
Chemical resistance - Dielectric constant 3
Continuous use temperature - 3~℃ Dielectric loss factor 3
Yield Tensile strength Dielectric strength
Yield tensile strain leakage current strength
Ultimate tensile strength Adhesion
Ultimate tensile strain non-toxic and harmless﹣
Impact toughness/friction Coefficient
Notched Impact Toughness/Combustion Properties
Rockwell Pressure Hardness - UV Resistance.﹢
Shore Hardness Acid Resistance﹢
Bending Strength Alkali Resistance﹢< br/> Elastic modulus Carbonated water resistance﹢
Vicat softening temperature ℃ Resistance to chlorine carbonated water () ﹢
Thermal distortion temperature ℃ Resistance to aromatic compounds﹢
Thermal linear expansion coefficient* Resistance Ketone property
Thermal conductivity ℃ .3/ Hot water resistance﹢
Processing method:
It can be processed by general thermoplastic processing methods, such as extrusion, injection molding, casting, molding and transfer molding Molding
Extrusion of high molecular weight materials has good melt strength and can be molded and processed into films, sheets, tubes, rods and power insulating sleeves by extrusion, depending on the equipment used and the shape of the processed products. , the temperature is controlled between ~ degrees Celsius, the molding temperature is controlled between ~ degrees Celsius, the temperature must be strictly controlled so that the temperature cannot exceed its melting temperature for a long time. The extrusion molding equipment can be a general screw extruder.
Injection molding with low molecular weight has a high melt flow rate and can be processed by injection injection molding. Generally, a general-purpose injection molding machine is used, but the barrel plunger, nozzle, etc. must be made of corrosion-resistant base alloys.
In molding, the pellets are generally preheated in an oven or preheating furnace at a preheating temperature of ~3 degrees Celsius, and then the preheated materials are added to the preheated mold of ~3 degrees Celsius. Apply pressure and hold pressure, and the holding time depends on the time required for melting and flow. Thick-walled products must be kept under pressure and cooled to below degrees Celsius before being demoulded to avoid vacuum bubbles or deformation of the product.
Transfer molding generally uses an extruder to plasticize first, and then transports the material to a storage tank. The material in the storage tank is injected into the mold through a plunger pump, and is kept under pressure for cooling. Whether it is molding or transfer molding, it is mainly used to produce products with larger volumes and thicker walls.
Other processing methods can also use dipping, co-extrusion, conforming and other processing techniques.