Rochling PP Rod Polypropylene Plastic Sheet PP Rod Supply

HONY offer Rochling PP Rod Polypropylene Plastic Sheet Acid and Alkali Corrosion Resistant PP Rod

English name: Polypropylene
Specific gravity: 0.9-0.91 g/cm3 Molding shrinkage: 1.0-2.5% Molding temperature: 160-220°C Drying conditions:

Polypropylene is another excellent resin variety developed after nylon. It is a linear polymer with high density, no side chains, and high crystallinity, and has excellent comprehensive properties. White translucent, waxy when unpigmented; lighter than Polyethylene. The transparency is also better than polyethylene, and it is harder than polyethylene. The material performance density is small, the strength, rigidity, hardness and heat resistance are all better than low-pressure polyethylene, and can be used at about 100 degrees. It has good electrical properties and high-frequency insulation and is not affected by humidity, but it becomes brittle at low temperatures and is not resistant to mold Easy to age. Suitable for making general mechanical parts, corrosion-resistant parts and insulating parts

Molding performance

1. Crystalline material, low hygroscopicity, prone to melt fracture, and easy to decompose when in contact with hot metal for a long time.
2. The fluidity is good, but the shrinkage range and shrinkage value are large, and shrinkage, dents, and deformation are prone to occur.
3. The cooling speed is fast, the pouring system and cooling system should dissipate heat slowly, and pay attention to controlling the molding temperature. The directionality is obvious when the material temperature is low. It is especially obvious at low temperature and high pressure. When the mold temperature is lower than 50 degrees, the plastic parts are not smooth and easy to produce Poor welding, leaving marks, warping deformation easily occurs above 90 degrees
4. The thickness of the plastic wall must be uniform to avoid lack of glue and sharp corners to prevent stress concentration (can be sold in zero cuts)

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