Professional Production of PP Sheets in Various Specifications, Customization Supported by Dezhou Yicai Rubber & Plastic

Flame-retardant boards have met the V2 level requirements of the plasticization industry, featuring low density, odorless, and excellent corrosion resistance. They exhibit strong resistance to general acids, alkalis, salts, and various solvents. With good chemical stability, excellent electrical properties, uniform color, smooth and flat surface, easy installation, and long service life.

Manufacturers of PP engineering boards, acid and alkali resistant boards, and high-density boards, please come to Dezhou Yicai Rubber & Plastic Products. Polypropylene (PP) board is a semi-crystalline material. It is harder than PE and has a higher melting point. Since homopolymer-type PP becomes very brittle above 0°C, many commercial PP materials are random copolymers with 1–4% ethylene or block copolymers with higher ethylene content. Copolymer-type PP materials have a lower heat distortion temperature (100°C), lower transparency, lower gloss, and lower rigidity but offer stronger impact strength. The strength of PP increases with higher ethylene content. The Vicat softening temperature of PP is 150°C. Due to its high crystallinity, this material has excellent surface stiffness and scratch resistance. PP does not suffer from environmental stress cracking. Typically, PP is modified by adding glass fibers, metal additives, or thermoplastic rubber. The melt flow rate (MFR) of PP ranges from 1 to 40. Low MFR PP materials have better impact resistance but lower tensile strength. For materials with the same MFR, copolymer types have higher strength than homopolymer types. Due to crystallization, PP has a relatively high shrinkage rate, generally between 1.8% and 2.5%. However, the direction and uniformity of shrinkage are much better than materials like PE-HD. Adding 30% glass additives can reduce the shrinkage rate to 0.7%. Both homopolymer and copolymer PP materials offer excellent moisture resistance, acid and alkali corrosion resistance, and solvent resistance.