Compared with other materials, plastic has the following performance characteristics

Compared with other materials, plastic has the following performance characteristics

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1. Lightweight

Plastic is a lighter material with a relative density of 0.90-2.2. Obviously, can plastics float on the water? Especially foamed plastics, because of the micropores inside, the texture is lighter, and the relative density is only 0.01. This feature allows plastics to be used in the production of products that require lightening of their own weight.

2. Excellent chemical stability

Most plastics have good corrosion resistance to chemicals such as acids and alkalis. In particular, polytetrafluoroethylene (F4), commonly known as the King of Plastics, is more chemically stable than gold, and it will not deteriorate even if it is boiled in “aqua regia” for more than ten hours. Because F4 has excellent chemical stability, it is an ideal corrosion-resistant material. For example, F4 can be used as a material for conveying corrosive and viscous liquid pipelines.

3. Excellent electrical insulation properties

Ordinary plastics are poor conductors of electricity, and their surface resistance and volume resistance are very large, which can reach 109 to 1018 ohms in numbers. The breakdown voltage is large, and the dielectric loss tangent value is small. Therefore, plastics have a wide range of applications in the electronics industry and machinery industry. Such as plastic insulated control cables.

4. Poor thermal conductor, with noise reduction and shock absorption effect

Generally speaking, the thermal conductivity of plastic is relatively low, equivalent to 1/75-1/225 of steel, and the micropores of foam plastic.

It contains gas, which has better heat insulation, sound insulation and shock resistance. For example, the thermal conductivity of polyvinyl chloride (PVC) is only 1/357 of steel and 1/1250 of aluminum. In terms of thermal insulation capacity, single-glass plastic windows are 40% higher than single-glass aluminum windows, and double-glass windows are 50% higher. After the plastic window is combined with the hollow glass, it can be used in residences, office buildings, wards, and hotels, saving heating in winter and saving air-conditioning expenses in summer, and the benefits are very obvious.

5. Wide distribution of mechanical strength and higher specific strength

Some plastics are as hard as stone and steel, and some are soft as paper and leather. From the perspective of mechanical properties such as hardness, tensile strength, elongation, and impact strength of plastics, they have a wide distribution range and have a lot of options for use. Due to the small specific gravity and high strength of plastic, it has a high specific strength. Compared with other materials, plastics also have obvious shortcomings, such as flammability, higher stiffness than metals, poor aging resistance, and heat resistance.

Therefore, our plastic products use plastic materials according to the nature of the product
For example: spoon products are basically food grade PP and medical grade PP.
The syringe is medical grade PP, and the test tube has medical grade PP or PS. The spray bottle is basically a combination of PET and PP.

Because the mold materials we use are very good mold steel, such as 718. The quality of the plastic products made is very good. We have 13 years of historical experience in this area, very professional


Post time: May-07-2021