Environment-friendly and high-weather-resistance PVC profile particles and processing technology thereof

A processing technology and high weather resistance technology, applied in the field of environmentally friendly and high weather resistance PVC profile particles and their processing technology, can solve the problems of thermal degradation of PVC, decrease of impact strength and tensile strength, bending and twisting of thermal expansion and contraction rate, etc. , to achieve the effect of extending service life, good heat resistance and improving comprehensive performance

Active Publication Date: 2019-02-15
GUANGDONG SHUNDE JIANGSUN MAGNETIC CO LTD
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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] In addition, the weather resistance of PVC profiles is poor, the surface of PVC profiles will change color after aging, and the residual impact strength and tensile strength will decrease after aging, which directly affects the service life of PVC profiles, so the aging phenomenon seriously restricts the use and development of PVC profiles. To overcome this problem, the current common method is to add auxiliary ingredients such as heat stabilizers, lubricants, processing modifiers, impact modifiers, fillers, anti-aging agents, colorants and other auxiliary ingredients to PVC profiles to improve PVC profiles. Anti-aging performance, but these auxiliary additives often contain heavy metal "lead", which increases the risk of PVC profiles causing harm to the surrounding environment and human body
At the same time, due to the difference between the auxiliary ingredients added in traditional PVC profiles and the material of PVC profiles, it is easy to cause PVC deformation due to excessive stress or uneven distribution, and bending and twisting caused by inconsistent thermal expansion and contraction rates. It is of great significance to develop an environmentally friendly and highly weather-resistant PVC profile granule

Method used

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  • Environment-friendly and high-weather-resistance PVC profile particles and processing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] An environmentally friendly and highly weather-resistant PVC profile granule, the PVC profile granule includes the following components in parts by weight: 80 parts of PVC resin, 2 parts of heat stabilizer, 1 part of auxiliary heat stabilizer, 0.5 part of light stabilizer, auxiliary light stabilizer 0.1 part of anti-oxidant, 0.1 part of ultraviolet light absorber, 0.1 part of antioxidant, 0.1 part of auxiliary antioxidant, 0.1 part of toughening agent and 0.1 part of lubricant.

[0056] The thermal stabilizer in the above-mentioned PVC profile particle raw material is the mixture of zinc stearate, lanthanum salicylate and phosphite, and the mass ratio of zinc stearate, lanthanum salicylate and phosphite in the mixture is 1:0.2: 1; the auxiliary heat stabilizer is stearyl benzoyl methane; the light stabilizer is 2,4-dihydroxybenzophenone; the auxiliary light stabilizer is nano silicon dioxide; the antioxidant is 2,6-ditertiary Butyl-4-cresol; auxiliary antioxidant is cys...

Embodiment 2

[0063] An environmentally friendly and highly weather-resistant PVC profile granule, the PVC profile granule includes the following components in parts by weight: 90 parts of PVC resin, 2.5 parts of heat stabilizer, 1.2 parts of auxiliary heat stabilizer, 0.6 part of light stabilizer, auxiliary light stabilizer 0.2 parts of anti-oxidant, 0.2 parts of ultraviolet light absorber, 0.2 parts of antioxidant, 0.15 parts of auxiliary antioxidant, 0.15 parts of toughening agent and 0.15 parts of lubricant.

[0064] The thermal stabilizer in the above-mentioned PVC profile particle raw material is the mixture of zinc stearate, cerium salicylate and phosphite, and the mass ratio of zinc stearate, cerium salicylate and phosphite in the mixture is 1:0.4: 1.5; the auxiliary heat stabilizer is dibenzoylmethane; the light stabilizer is 2-hydroxyl-4-methoxybenzophenone; the auxiliary light stabilizer is nano silicon dioxide; the antioxidant is four (3,5 Di-tert-butyl-4-hydroxyphenyl) pentaery...

Embodiment 3

[0071] An environmentally friendly and highly weather-resistant PVC profile granule, the PVC profile granule includes the following components in parts by weight: 100 parts of PVC resin, 3 parts of heat stabilizer, 1.4 parts of auxiliary heat stabilizer, 0.7 parts of light stabilizer, auxiliary light stabilizer 0.3 parts of anti-oxidant, 0.3 parts of ultraviolet absorber, 0.3 parts of antioxidant, 0.2 parts of auxiliary antioxidant, 0.2 parts of toughening agent and 0.2 parts of lubricant.

[0072] The thermal stabilizer in the above-mentioned PVC profile particle raw material is the mixture of zinc stearate, lanthanum salicylate and phosphite, and the mass ratio of zinc stearate, lanthanum salicylate and phosphite in the mixture is 1:0.6: 2; the auxiliary heat stabilizer is oleoylbenzoylmethane; the light stabilizer is 2-hydroxy-4-n-octyloxybenzophenone; the auxiliary light stabilizer is nano-silica; Dilauryl propionate; auxiliary antioxidant is phytic acid; ultraviolet absor...

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Abstract

The invention discloses environment-friendly and high-weather-resistance PVC profile particles and a processing technology thereof. The PVC profile particles are prepared from components including PVCresin, a heat stabilizer, an auxiliary heat stabilizer, a light stabilizer, an auxiliary light stabilizer, an ultraviolet absorber, an antioxidant, an auxiliary antioxidant, a toughening agent and alubricant. The processing technology of the PVC profile particles comprises the steps as follows: firstly, mixing the PVC resin, the heat stabilizer and the auxiliary heat stabilizer, then, adding thelight stabilizer, the auxiliary light stabilizer, the ultraviolet absorber, the antioxidant and the auxiliary antioxidant for mixing, finally, adding the toughening agent and the lubricant for mixing, and performing melt extrusion and granulation to obtain the environment-friendly and high-weather-resistance PVC profile particles. The PVC profile particles have excellent ultraviolet aging resistance, heat resistance, tensile strength and excellent weather resistance. No harmful intermediate products are produced in the preparation process of the PVC profile particles, and the whole processingprocess is simple to operate, short in time and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of PVC profiles, in particular to environmentally friendly and highly weather-resistant PVC profile particles and a processing technology thereof. Background technique [0002] PVC (polyvinyl chloride) 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 polarity between macromolecules The permanent bond makes PVC show 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] In addition, the weather resistance of PVC profiles is poor, the surface of PVC profiles will change color after aging, and the residual impact strength and tensile strength will decrease after aging, which directly affects the service life of PVC profiles, so the aging phenom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L53/02C08L23/16C08K13/02C08K3/36C08K3/22C08K5/3475
CPCC08K2003/2241C08K2201/011C08L27/06C08L2201/08C08L2205/03C08L53/025C08K13/02C08K3/36C08K3/22C08K5/3475C08L23/16C08L53/02
Inventor 邰文黄志高林炎新王国良程明华
Owner GUANGDONG SHUNDE JIANGSUN MAGNETIC CO LTD
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