(1) Physical properties: PP spunbond polypropylene non-woven fabric is a non-toxic, odorless milky white highly crystalline polymer. It is one of the lightest varieties of all plastics at present. It is particularly stable to water and can be left in water for 14 hours. The water absorption rate is only 0.01%.
The molecular weight is about 80,000 to 150,000, and the formability is good.
However, due to the large shrinkage rate, the original wall products are easy to dent, and the surface of the products has good gloss and is easy to color.
(2) Mechanical properties: PP spunbond polypropylene non-woven fabric has high crystallinity and regular structure, so it has excellent mechanical properties. Its strength, hardness and elasticity are higher than high-density PE (HDPE).
The outstanding feature is the bending fatigue resistance (7×10^7) times of opening and closing bending without damage marks. The dry friction coefficient is similar to nylon, but not as good as nylon under oil lubrication.
(3) Thermal properties: PP non-woven fabric has good heat resistance, with a melting point of 164~170°C, and the product can be sterilized at temperatures above 100°C.
It will not deform at 150℃ without being affected by external force.
The embrittlement temperature is -35°C. Embrittlement will occur below -35°C, and the heat resistance is not as good as PE.
(4) Chemical stability: PP non-woven fabric has good chemical stability. In addition to being corroded by acids, it is relatively stable to various other chemical reagents. However, low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons, etc. can cause PP non-woven fabric softens and swells, and its chemical stability increases with the increase in crystallinity.
(5) Electrical properties: PP spunbond polypropylene non-woven fabric has excellent high-frequency insulation properties. Since it hardly absorbs water, the insulation properties are not affected by humidity. It has a high dielectric coefficient and changes with temperature. Rising, it can be used to make heated electrical insulation products. The breakdown voltage is also very high, so it is suitable for electrical accessories, etc.
It has good resistance to voltage and arc, but has high static electricity and is prone to aging in contact with copper.
(6) Weather resistance: Non-woven fabrics are very sensitive to ultraviolet rays. Adding dilauryl zinc oxide thiopropionate, carbon black-like milky white fillers, etc. can improve their aging resistance.
Suzhou New Material Technology Co., Ltd. sells PP spunbond polypropylene non-woven fabrics. Interested parties can enter the store to consult us.
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