What are the common properties of PP non woven fabrics?

 (1) Physical properties: PP non woven fabric is a non-toxic, odorless, milky white highly crystalline polymer, which is particularly stable to water, and its water absorption rate is only 0.01% in water for 14 hours. The molecular weight is between 80,000 and 150,000, and the moldability is good. However, due to the large shrinkage rate, the original wall products are easy to dent, the surface of the products has good gloss and is easy to color.


(2) Mechanical properties: PP 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 resistance to bending fatigue (7×10^7) times of opening and closing without damage. The coefficient of dry friction is similar to nylon, but it is not as good as nylon under oil lubrication.


(3) Thermal performance: PP non woven fabric has good heat resistance, melting point is 164~170℃, and products can be sterilized at temperatures above 100℃. No deformation at 150°C under no external force. The embrittlement temperature is -35℃, embrittlement will occur below -35℃, and the heat resistance is not as good as PE.

China pp non-woven supplier

(4) Chemical stability: PP non woven fabric has good chemical stability. In addition to being eroded by acid, it is relatively stable to other chemical reagents. However, low molecular weight aliphatic hydrocarbons and aromatic hydrocarbons can soften and swell PP non woven fabrics. The stability also improves with the increase of crystallinity. Therefore, PP non-woven fabric is suitable for making Russian-Chinese chemical pipelines and fittings, with good anti-corrosion effect.


(5) Electrical performance: PP non woven fabric has excellent high-frequency insulation performance. Because it hardly absorbs water, the insulation performance is not affected by humidity, has a higher dielectric coefficient, and can be used for production with the rise of temperature Heated electrical insulation products have a high breakdown voltage and are suitable for electrical accessories. Good resistance to voltage and arc, but high static electricity, easy to aging in contact with copper.


(6) Weather resistance: PP non woven fabric is very sensitive to ultraviolet rays. Adding zinc oxide thiopropionate dilaurin, carbon black-like milky white filler, etc. can improve its aging resistance.


We are a Chinese non-woven fabric manufacturer, we provide non-woven rolls and non-woven products, high quality, ex-factory price, can be customized, if you are interested in PP non-woven fabrics, you can contact us, email: long@guideco.cn


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