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High weather resistance PVC profile for doors and windows and production technology

A PVC resin and profile technology, which is applied in the field of PVC profile performance optimization, can solve the problems of product surface discoloration, poor weather resistance, impact strength and tensile strength decline, and achieve high rigidity and enhanced weather resistance.

Inactive Publication Date: 2015-12-16
LIAONING CHENGWEI PLASTIC PROFILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, PVC molecules contain chlorine groups. When the temperature reaches 120°C, pure PVC will begin to de-HCl reaction, which will lead to thermal degradation of PVC.
[0003] With the development of industrial technology, PVC materials are processed and used as building materials more and more widely. For example, PVC profiles used as door and window materials have developed vigorously in the past ten years, but most of the products in the prior art There are still certain quality problems, such as poor weather resistance of the product, discoloration of the product surface after aging, and a decrease in residual impact strength and tensile strength after aging
Some discoloration is also related to the residual strength of the product after aging, which directly affects the service life of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First, the raw materials are proportioned according to the following parts by weight: PVC resin: 420 parts; ACR processing aid: 13 parts; calcium stearate: 25 parts; chlorinated polyethylene: 50 parts; 3 : 32 parts; superfine CaCO 3 : 20 parts; titanium dioxide: 38 parts; anti-phosphite: 2 parts; ultraviolet absorber: 2 parts; ultramarine blue: 2.5-3 parts, the ultrafine CaCO 3 The particle size is 50um, the average degree of polymerization of the PVC resin is 800, and the ultraviolet absorber is composed of ultraviolet absorber UV-5310: 0.2 part, ultraviolet absorber UV-327: 0.4 part.

[0019] The raw materials are extruded according to the following process:

[0020] 1) Add the above-mentioned raw materials into the main material barrel, the main material barrel includes a machine barrel, a head mold and a rotatable screw rod, and the said machine barrel has 4 temperature control zones, and the first, second, and The temperatures of the third and fourth temperature ...

Embodiment 2

[0023] First, the raw materials are proportioned according to the following parts by weight: PVC resin: 420 parts; ACR processing aid: 14 parts; zinc stearate: 25 parts; chlorinated polyethylene: 54 parts; 3 : 32 parts; superfine CaCO 3 : 20 parts; titanium dioxide: 36 parts; antiphosphite: 2 parts; ultraviolet absorber: 2 parts; ultramarine blue: 2.5-3 parts, the ultrafine CaCO 3 The particle size of the PVC resin is 100um, the average degree of polymerization of the PVC resin is 720, and the ultraviolet absorber is composed of ultraviolet absorber UV-5310: 0.2 part, ultraviolet absorber UV-327: 0.4 part.

[0024] The raw materials are extruded according to the following process:

[0025] 1) Add the above-mentioned raw materials into the main material barrel, the main material barrel includes a machine barrel, a head mold and a rotatable screw rod, and the said machine barrel has 4 temperature control zones, and the first, second, and The temperatures in the third and fourt...

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Abstract

The invention discloses a high weather resistance PVC profile for doors and windows. The PVC profile is prepared from, by weight, 420 parts of PVC resin, 13-14 parts of ACR processing aids, 25 parts of stabilizer, 50-55 parts of chlorinated polyethylene, 32 parts of CaCO3, 20 parts of superfine CaCO3, 36-38 parts of titanium dioxide, 2-2.5 parts of antioxidants, 1.4-2 parts of ultraviolet light absorbents and 2.5-3 parts of ultramarine. The stabilizer is one or more of calaium strarate, calcium ricinoleate, zinc stearate and zinc diricinoleate. The invention further discloses a production technology of the PVC profile. According to the high weather resistance PVC profile for the doors and the windows and the production technology of the PVC profile, the PVC profile has higher rigidity, wind load resistance and low temperature enhancement by means of optimizing of profile raw materials and the preparation technology.

Description

technical field [0001] The invention belongs to the technical field of performance optimization of PVC profiles, and in particular relates to a highly weather-resistant PVC profile for doors and windows and a production process. Background technique [0002] PVC is a non-crystalline, polar polymer with high softening temperature and melting temperature. Generally, pure PVC can only be plasticized at 160-210°C. Due to the polar bonds between macromolecules, PVC shows Hard and brittle performance. Moreover, PVC molecules contain chlorine groups. When the temperature reaches 120°C, pure PVC will start to de-HCl reaction, which will lead to thermal degradation of PVC. [0003] With the development of industrial technology, PVC materials are processed and used as building materials more and more widely. For example, PVC profiles used as door and window materials have developed vigorously in the past ten years, but most of the products in the prior art There are still certain qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/28C08K13/02C08K3/26C08K3/22C08K5/098C08K5/524B29C47/92B29C47/90B29C48/90B29C48/92
Inventor 姜虹柳相飞
Owner LIAONING CHENGWEI PLASTIC PROFILE
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