PP non-woven fabrics of various commonly used performance
(1) Physical properties: PP non-woven non-toxic, tasteless milky white high-crystalline polymer, is currently the most light of all varieties of plastic one of the water is particularly stable in the water 14h water absorption is only 0.01 %. Molecular weight of about 8 to 150,000, good shape. PP Nonwoven Fabric But the shrinkage rate, the original wall products easy to depression, the product surface gloss is good, easy to color.
(2) mechanical properties: PP non-woven fabric of high crystallinity, structured, and thus has excellent mechanical properties, its strength and hardness, flexibility than high-density PE (HDPE) high. Highly characterized by bending fatigue (7 × 10 ^ 7) times the opening and closing of the folding bend without damage traces, PP Nonwoven Fabric dry friction coefficient and nylon similar, but not as good as nylon in the oil lubrication.
(3) thermal properties: PP non-woven fabrics with good heat resistance, the melting point of 164 ~ 170 ℃, the product can be 100 ℃ above the temperature sterilization. In the absence of external force, 150 ℃ is not deformed. Brittle temperature of -35 ℃, below -35 ℃ will be brittle, PP Nonwoven Fabric heat resistance as PE.
(4) chemical stability: PP non-woven fabrics with good chemical stability, in addition to acid erosion, the other chemical reagents are relatively stable, but low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons can make PP non-woven Cloth softening and swelling, chemical stability with the increase in crystallinity also increased. Therefore, PP non-woven fabrics suitable for the production of Russian chemical pipeline and accessories, anti-corrosion effect is good.
(5) Electrical properties: non-woven fabric of high-frequency insulation performance is excellent, because it is almost no water, PP Nonwoven Fabric so the insulation performance is not affected by humidity, a higher dielectric coefficient, and with the temperature rise, can be used to make heat Of the electrical insulation products, the breakdown voltage is also high, suitable for electrical accessories. Anti-voltage, good arc resistance, but high static electricity, easy to contact with the copper aging.
(6) weatherability: non-woven fabrics are very sensitive to ultraviolet light, PP Nonwoven Fabric adding zinc oxide thiopropionate cinnamon, carbon black type of similar milky white filler can improve its aging resistance.