PVC (polyvinyl chloride) materials have the following main characteristics:

一、Chemical Stability: 

Excellent resistance to acids, alkalis, salts, and most organic solvents, suitable for chemical pipelines, containers, etc.

Mechanical Properties:

二、Rigid PVC: 

High strength and rigidity, but poor impact resistance. Toughness can be improved through modification. Commonly used in building profiles and pipes.

三、Flexible PVC: 

Contains plasticizers, excellent flexibility and easy bending. Used for wire and cable sheaths, hoses, artificial leather, etc.

四、Electrical Insulation: 

Excellent electrical insulation properties, suitable for cable sheaths, sockets, etc., but poor corona resistance. Use with caution in high-frequency or high-voltage applications.

五、Processing Characteristics: 

High melt viscosity and poor flowability, requiring high-temperature and high-pressure injection molding. 

Flexible PVC has a lower processing temperature than rigid PVC. Sensitive to shear; excessive shearing can lead to decomposition.

六、vironmental Protection and Safety: 

Contains chlorine, releases toxic gases (such as dioxins) upon combustion. 

Plasticizers may migrate; food/medical grade requires strict certification. Recycling is essential to avoid environmental pollution.

PVC materials are widely used in construction, electronics, and daily necessities due to their low cost and diverse properties, but attention should 

be paid to their thermal stability and environmental protection requirements when using them.