PP non-woven fabric, also known as non-woven fabric, it is composed of directional or random fibers, PP non-woven fabric is the most environmentally friendly material products in modern applications, this product has moisture-proof, breathable, flexible, light quality, not combustion-supporting, easy decomposition, non-toxic and non-irritating, rich color, low price, recyclable and so on. Such as polypropylene (pp material) granule material as raw material, after high temperature melting, spinneret, shop, hot roll take continuous step method production. Called cloth because it has the appearance and certain properties of cloth.
(1) Physical properties:
PP non-woven fabric is non-toxic, tasteless milky white high crystal polymer, is one of the most light varieties of all plastics, especially stable to water, water absorption rate of 14h is only 0.01%. Molecular weight about 80 ~ 150 thousand, good molding. However, due to the large shrinkage rate, the original wall products are easy to sag, the product surface gloss is good, easy to color.
(2) mechanical properties:
PP non-woven fabric has high crystallinity, regular structure, so it has excellent mechanical properties, its strength and hardness, elasticity are higher than high density PE(HDPE). Outstanding characteristics are bending fatigue resistance (7×10^7) times opening and closing folding bending without damage traces, dry friction coefficient and nylon is similar, but under oil lubrication than nylon.
(3) thermal performance:
PP non-woven fabric has good heat resistance, melting point in 164~170℃, the product can be sterilized at temperatures above 100℃. Under the action of no external force, 150℃ does not deform.
The embrittlement temperature is -35℃, below which embrittlement will occur, and the heat resistance is not as good as PE.
(4) Chemical stability:
PP non-woven fabric has good chemical stability, in addition to acid erosion, to a variety of other chemical reagents are relatively stable, but low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons can make PP non-woven fabric softening and swelling, chemical stability with the increase of crystallinity and improved. Therefore, PP non-woven fabric is suitable for the production of Russian and Chinese chemical pipelines and accessories, corrosion prevention effect is good.
(5) Electrical performance:
non-woven high frequency insulation performance is excellent, because it almost does not absorb water, so the insulation performance is not affected by humidity, has a high dielectric coefficient, and with the rise of temperature, can be used to make heated electrical insulation products, breakdown voltage is very high, suitable for electrical accessories, etc.. Good resistance to voltage and arc, but high static electricity, easy to aging contact with copper.
(6) weather resistance:
non-woven fabric is sensitive to ultraviolet light, adding zinc oxide thipropionate laurel fat, carbon black similar milky white filler can improve its aging resistance.
PP non-woven products have the characteristics of rich color, bright and lively, fashion and environmental protection, his use is very wide, beautiful and generous, patterns and styles are diverse, and light, environmental protection, recyclable, is internationally recognized as the environmental protection products to protect the earth's ecology.