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Introduction to what material is polypropylene

2021.07.17polypropylene material

With the vigorous development of the automobile industry, various raw materials for manufacturing automobiles have also been rapidly developed and updated, and more and more automobile parts have begun to use modified plastics to replace metal parts. In recent years, there has been a trend to unify automotive interior and exterior materials into polypropylene series materials. What kind of material is polypropylene?

What is the introduction of polypropylene

Polypropylene is non-toxic, tasteless, low density, strength, rigidity, hardness and heat resistance are better than low-pressure polyethylene, and can be used at around 100°C. It has good dielectric properties and high-frequency insulation and is not affected by humidity, but it becomes brittle at low temperatures, not wear-resistant, and easy to age. Suitable for making general mechanical parts, corrosion-resistant parts and insulating parts. Common organic solvents such as acids and alkalis have little effect on it and can be used for food utensils.

Polypropylene has many excellent characteristics:

1. The relative density is small, only 0.89-0.91, which is one of the lightest varieties in plastics.

2. Good mechanical properties. Except for impact resistance, other mechanical properties are better than polyethylene, and the molding processability is better.

3. It has high heat resistance, and the continuous use temperature can reach 110-120℃.

4. Good chemical performance, almost no water absorption, and no reaction with most chemicals.

5. The texture is pure and non-toxic.

6. Good electrical insulation.

7. The transparency of polypropylene products is better than that of high-density polyethylene products.

It has many advantages but also disadvantages:

1. The product has poor cold resistance and low low temperature impact strength.

2. Products are susceptible to aging due to light, heat and oxygen during use.

3. The colorability is not good.

4. Easy to burn.

5. Poor toughness, high static electricity, poor dyeability, printability and adhesion.

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