How many degrees is PE resistant to high temperature, cold and acid and alkali?

1, PE is divided into three types: low density polyethylene LDPE, high density polyethylene HDPE and linear low density polyethylene LLDPE.

2, LDPE temperature -60 ~80 degrees, acid and alkali resistance.

HDPE is resistant to temperature -40 ~90 degrees, acid and alkali.

Acid and alkali resistance -40 ~80-90 degrees, acid and alkali resistance.

3. What's the difference between LDPE and LDPE HDPE LLDPE?

The difference between LDPE and HDPE is mainly the difference in density, which leads to different mechanical properties: one is rigid and the other is flexible.

LLDPE differs from them mainly in molecular structure: LLDPE has many branches, so this material is both flexible and rigid.

Features: acid and alkali resistance, organic solvent resistance, excellent electrical insulation, low temperature: it can still maintain a certain toughness; Mechanical strength such as surface hardness, tensile strength and rigidity are higher than LDPE, but lower than HDPE.

LLDPE has the best puncture resistance and tear resistance, and is especially suitable for making films. The film produced is thinner than LDPE, but it has high strength.

Expand knowledge:

Polyethylene (PE) is a thermoplastic resin polymerized from ethylene.

In industry, it also includes * * * polymers of ethylene and a small amount of α-olefins. Polyethylene is odorless and non-toxic, feels like wax, and has excellent low temperature resistance (the lowest service temperature can reach-100 ~-70℃), good chemical stability and resistance to most acids and bases (not oxidative acids). Insoluble in general solvents at room temperature, low water absorption and excellent electrical insulation. ?

On October 27th, 2065438+071KLOC-0, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily sorted out for reference. Polyethylene is in the list of three types of carcinogens.

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