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Production method of anti-aging PVC board

A technology for PVC boards and production methods, applied in the field of PVC boards, capable of solving problems such as surface roughness, poor aging resistance, and weakened strength, achieving the effects of improving UV resistance, improving heat resistance and aging resistance, and slowing down aging effects

Pending Publication Date: 2021-01-15
HAINING OUPAI IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] PVC board is one of the most widely used general-purpose plastics. It has many advantages, but its aging resistance is poor. After being exposed to the air or sunlight for a period of time, its surface becomes rough, and its own strength will also weaken, which affects use, needs improvement

Method used

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.

[0025] A kind of production method of anti-aging PVC plate, comprises following process step:

[0026] (1) Add raw materials, with the main material PVC-SG5 type resin 45% of mass percentage, reclaim PVC board mill powder material 20% and auxiliary material heat stabilizer 2%, processing modifier 1.5%, foam regulator 6%, AC mixed foaming agent 0.2%, NC white foaming agent 0.3%, impact modifier 6%, light calcium carbonate 15%, fatty acid ester 0.75%, higher fatty acid 0.75%, oxidized polyethylene wax 0.4%, hindered amine 0.8% of light stabilizer and 1.3% of ultraviolet absorber are jointly added in the reactor;

[0027] (2) High-speed hot mixing, the main material and auxiliary materials in step (1) are mixed at a high speed at 110-130 ° C...

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Abstract

The invention discloses a production method of an anti-aging PVC board. The production method is characterized by comprising the following steps: (1) raw material adding; (2) high-speed hot mixing; (3) low-speed cold mixing; (4) twin-screw extrusion; (5) cooling and shaping; (6) traction; (7) cutting; and (8) inspecting and packaging. According to the invention, a main material PVC resin, a reclaimed material and an auxiliary material heat stabilizer, a processing modifier, a foaming regulator, a foaming agent, an impact modifier, a filler, a lubricant, a plasticizer, a hindered amine light stabilizer and an ultraviolet light absorber are used as production raw materials of the PVC board according to specific mass percentages, wherein the hindered amine light stabilizer simultaneously improves the heat resistance and aging resistance of the PVC board in the production and use processes, the ultraviolet absorber improves the ultraviolet resistance of the PVC board, and the aging effectof ultraviolet rays on the PVC board is slowed down.

Description

technical field [0001] The invention relates to the technical field of PVC boards, in particular to a production method of anti-aging PVC boards. Background technique [0002] PVC board is a board made of polyvinyl chloride as a raw material with a honeycomb mesh structure in section. PVC board accounts for the largest proportion in the building materials industry, which is 60%, followed by the packaging industry, and several other industries with small-scale applications. According to the degree of softness and hardness, it can be divided into soft PVC and hard PVC. According to the production process, it can be divided into PVC crust foam board and PVC free foam board. According to transparent and opaque, it can be divided into PVC transparent board and PVC opaque board. [0003] PVC board is one of the most widely used general-purpose plastics. It has many advantages, but its aging resistance is poor. After being exposed to air or sunlight for a period of time, its sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/30C08K3/26C08K5/10C08K5/09C08K13/02C08J9/10C08J9/08C08J9/00
CPCC08J9/103C08J9/08C08J9/0061C08J9/0095C08J9/0066C08J9/0023C08J9/0028C08J2327/06C08J2427/06C08J2423/30C08J2203/02C08J2203/04C08J2203/18C08K2003/265C08K5/10C08K5/09C08K13/02
Inventor 陈夏朱群杰许云琦金志红朱佳明
Owner HAINING OUPAI IND & TRADE CO LTD
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