Glass sling material analysis

To examine the differences between two glass sling materials, we must first understand what polypropylene and polyester are, as well as the differences and characteristics of the two materials.

Material examination:

Polypropylene: is the brand name for polypropylene fiber, which is manufactured from propylene as the basic material through polymerization and melt spinning.

Polyester: It is a fiber polymer formed by esterification or ester exchange and polycondensation of purified terephthalic acid or dimethyl terephthalate with ethylene glycol.

Polypropylene has the following characteristics:

1. Polypropylene has a flat and smooth longitudinal surface and a circular cross-section.

2. The most significant advantage of polypropylene is its light texture; its density of 0.91g/cm3 is the lightest density of conventional chemical fibers, allowing the same weight of polypropylene as other fibers to cover a larger area.

3. Polypropylene has high strength, elongation, and elasticity. As a result, polypropylene is abrasion resistant. Furthermore, because the wet strength of polypropylene is comparable to the dry strength, it is an excellent material for producing fishing nets and cables.

4. Polypropylene's moisture absorption is very low, with nearly no moisture absorption, and the moisture return rate is close to nil in ordinary atmospheric circumstances. It does, however, have a core suction action and can move water vapor through the capillary in the fabric, but it has no absorption effect. Polypropylene dyeing is weak, and chromatography is insufficient to compensate for the lack of unique coloring.

5. Polypropylene has strong chemical resistance; in addition to concentrated nitric acid and concentrated caustic soda, polypropylene's acid and alkali resistance is good, making it appropriate for use as a filter and packing material.

6. Polypropylene has weak light resistance, poor heat stability, is easily aged, and has no ironing resistance. However, its anti-aging capabilities can be improved by adding an anti-aging substance. Furthermore, while polypropylene has strong electrical insulation, it is simple to generate static electricity during manufacturing.

Polyester：

1. Polyester is extremely strong. Short fiber strength is 2.6 5.7cN/dtex, while high strength fiber is 5.6 8.0cN/dtex. It is wet-state and dry-state strengths are the same due to negligible moisture absorption. Impact strength is four times that of nylon and twenty times that of viscose fiber.

2. Excellent elasticity. The elasticity is comparable to that of wool, and it can almost totally recover when extended by 5% to 6%. Wrinkle resistance is greater than other fibers, i.e. the cloth does not crease, and strong dimensional stability. The elasticity modulus of 22 141cN / dtex, is 2 or 3 times that of nylon.

3. Excellent heat resistance.

4. Excellent water absorption.

5. Excellent abrasion resistance. Abrasion resistance is second only to nylon, and it outperforms all other natural and synthetic fibers.

6. Excellent lightfastness. Only acrylic outperforms it in terms of light resistance.

7. corrosion resistance. Bleach, oxidizer, hydrocarbons, ketones, petroleum products, and inorganic acids are all resistant. Resistant to diluting alkali and mold, but hot alkali can cause it to degrade.

8. Poor dyeability.