High-temperature-resisting PVC plate and preparing method thereof

Abstract

The invention discloses a high-temperature-resisting PVC plate. The high-temperature PVC plate comprises, by weight, 100 parts of PVC S-700, 20-30 parts of modified polystyrene, 2-4 parts of compound stabilizer, 1-3 parts of polyethylene wax, 0.2-0.4 part of stearic acid, 0.3-0.5 part of barium stearate, 3-4 parts of CPE, 40-50 parts of modified nano calcium carbonate, 0.4-0.6 part of graphite powder and 8-12 parts of trioctyl trimellitate. Extrusion shaping is conducted through a common extruder. The PVC plate has good high-temperature-resisting performance and very high impact resistance and tensile strength and has the advantages of being resistant to chemical corrosion and low in cost.

Description

technical field [0001] The invention relates to the field of PVC plates, in particular to a high-temperature-resistant PVC plate and a preparation method thereof. Background technique [0002] With the development of the national economy and urban construction, PVC has excellent performance and is widely used in industry, agriculture, daily life and public utilities. However, due to the large number of polar C-Cl bonds in the molecular chain structure of PVC resin, there is a large force between molecules, so compared with other general-purpose resins, PVC is a hard and brittle material with low impact strength and notch sensitivity. It is easy to be brittle and cracked when it is impacted by external force, so it is difficult to be used as a structural material. These shortcomings greatly limit the development of PVC in the field of high performance. In order to expand its application range, it is necessary to toughen PVC. Commonly used elastomer tougheners can better imp...

AI Technical Summary

Problems solved by technology

However, due to the large number of polar C-Cl bonds in the molecular chain structure of PVC resin, there is a large force between molecules, so compared with other general-purpose resins, PVC is a hard and brittle material with low impact strength and notch sensitivity. It is easy to crack when it is impacted by external force, so it is difficult to be used as a structural material

These shortcomings greatly limit the development of PVC in the field of high performance. In order to expand its application range, it is necessary to toughen and modify rigid PVC.

Commonly used elastomer tougheners can better improve its impact resistance, but at the same time it will significantly reduce the rigidity of the material itself.

Images