How does PP nonwoven fabric resist aging
Polypropylene non-woven fabric is also called PP non-woven fabric, polypropylene is a kind of raw material used in the manufacturing process of non-woven fabric, PP non-woven fabric is commonly used in daily life, such as le buckle cup, many are PP, polypropylene.
PP non-woven fabric is a new type of fiber structure product with soft, breathable and flat structure, which has the characteristics of short technological process, high production efficiency, significant economic benefits, rich product varieties and wide application range.
The raw material used for PP nonwoven fabric is PP fiber, which is the largest amount of fiber in nonwoven fabric production.
Compared with other fibers, PP fiber is lighter in proportion, higher in strength, better in wear resistance, better in elasticity recovery, better in ball resistance, better in acid and alkali resistance, better in chemical corrosion resistance than most other fibers, better in microbial resistance, no mold and no moth.
PP non-woven products are widely used in filtration, medical treatment, sanitation, health care, industry, agriculture, civil water conservancy, construction, home decoration and life in various fields.
Polypropylene is a commonly used raw material and a very important polymer fiber raw material. Nearly 94% of spunbonded and melt-blown cloth raw materials in China are polypropylene.
In the fields of medical treatment, sanitation and health care, the application of polypropylene nonwovens accounts for 50% of the total nonwovens.
Polypropylene fiber has very low density (0.91g/cm3);
Low water content (<0.1%,);
Good chemical resistance (acid, alkali, solvent);
Anti-mildew, anticorrosive, mothproof, antibacterial;
Good insulation, heat preservation, insulation performance;
High stiffness, good tensile strength (4.5 ~ 7.5cN/dtex);
Good fatigue and wear resistance;
Temperature resistance was 120℃ and melting point was 165℃.
Easy to reuse and other properties.
These characteristics make polypropylene fiber and other synthetic fibers have two major differences: the first is that its hygroscopicity is very low, which makes polypropylene fiber has excellent pollution resistance and almost the same dry and wet state characteristics;
Second, it has the lowest density of all fibers, which gives it good coverage for the same weight.
Because the thermal conductivity of polypropylene is the lowest of all the fibers, its insulation effect is better than wool, and its fiber density is lower, but also has a larger coverage area, can be used as home and car interior filler, thermal insulation flocs and sound-absorbing, heat insulation materials.
On the other hand, polypropylene does not react with common chemical reagents and has strong chemical resistance. Polypropylene nonwovens can be used to manufacture geotextiles, lead battery diaphragm, filtration materials, etc.
Because there is no active group in the main chain of polypropylene fine dener fiber, the material itself is not easy to be eroded by bacteria and mold, and the contact with human skin without irritation and toxicity, which has good sanitary performance, therefore, it can be widely used in the field of medical and health care.
In addition, the lipophilic chain structure of polypropylene and the internal capillary structure formed by the crystal transformation during the fiber post-stretching lead to the strong oil absorption of polypropylene products and the production of oil-absorbing felt materials.