Several characteristics of plastic woven bags are detailed The raw materials of plastic woven bags include PP (polypropylene) and PE (polyethylene).Plastic woven bag has light weight, good electrical insulation, corrosion resistance, easy to process and shape. The plastic woven bag has some general characteristics of PP and its own characteristics. As follows:
1, qualitative light,
PP is usually lighter, and the density of PP woven bags is about 0. 0-9. 98 grams per cubic centimeter. Common plastic woven fabric, if not filled, is equal to the density of plastic. The density of applied plastic woven is 0. 0-9. 91 grams per cubic centimeter. Knitting is usually lighter than water.
2. High breaking strength
In plastic products, plastic woven fabric is a kind of flexible material with high breaking strength, which is related to its molecular structure, crystallization degree, drafting orientation, etc., as well as the type of additive. If the specific strength (strength/specific gravity) is used to measure the plastic woven fabric, it is higher than or close to the metal material.
3. Good chemical resistance
Plastic braid has good corrosion resistance to inorganic and organic materials, below 110 degrees Celsius. It has no effect on it for quite a long time. It has strong chemical stability to solvent, grease, etc. When the temperature is high, carbon tetrachloride, xylene, turpentine, etc can swell it. Nitric acid, fuming sulfuric acid, halogen elements and other strong oxides can oxidize nitric acid, which is more resistant to strong alkali and usually acids.
4. Good abrasion resistance
The friction coefficient between pure plastic woven fabrics is small, only 0. About 12, similar to nylon, and to some extent, the friction between the plastic woven fabric and its articles, with lubrication.
5. Good electrical insulation
Pure plastic braid is an excellent electrical insulator. Since it does not absorb moisture and is not affected by humidity in the air, the breakdown voltage is also high, and its dielectric constant is 2. 2-2. 6. Its volume resistance is very high, and the good insulation property of the plastic woven fabric is not equal to the use of it for insulation materials.
6. Environmental resistance
At room temperature, the plastic woven cloth is actually completely free from water erosion, with a water absorption rate of less than 0 within 24 hours. At 01%, water penetration is low, and at low temperatures it becomes brittle and brittle. Plastic woven fabrics do not moldy.
7. Poor anti-aging ability
The aging resistance of plastic woven bag is poor, especially PP woven bag is lower than polyethylene woven bag. Its aging problems are mainly hot itchy aging, photodegradation. The poor aging resistance of plastic woven fabric is one of its main deficiencies, which affects the service life and application of woven bag.
2018 08/13