High-efficiency environment-friendly stabilizing agent used for PVC section bars

An environmentally friendly stabilizer and high-efficiency technology, which is applied in the field of PVC processing aids and can solve problems such as thermal decomposition of PVC profiles

Active Publication Date: 2012-04-18
SHANDONG RUIFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a high-efficiency environment-friendly stabilizer for PVC profiles, which not only solves the problem of thermal decomposition in the process of PVC prof

Method used

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  • High-efficiency environment-friendly stabilizing agent used for PVC section bars
  • High-efficiency environment-friendly stabilizing agent used for PVC section bars
  • High-efficiency environment-friendly stabilizing agent used for PVC section bars

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] (1) Accurately weigh calcium stearate and calcium zinc stearate, pentaerythritol ester, antioxidant 1010, ultraviolet absorber, magnesium aluminum hydrotalcite, stearoyl benzoyl methane, 1-methyl-2-benzene After mixing, kneading, and granulating the base indole according to the conventional process, take out 4 parts, add it to the following PVC formula, put it into a small high-speed mixing mixer, raise it to 115°C to release, and cool for later use.

[0039] Table 1 PVC formula

[0040] PVC

[0041] (2) Dynamic thermal stability

[0042] Put the mixed materials in the previous step into the double-roll plastic mill, and continue mixing at a constant roll temperature (about 190℃) and roll distance (1mm). The timing starts when the materials are added, and a sample is taken every two minutes thereafter. Take 7 samples from each formula, observe the plasticization of the material and whether there is precipitation on the surface of the roller, and use the c...

Example

[0045] Examples 2~3

[0046] Except for the addition of the polyol ester, the rest are the same as in Example 1. See Table 2 and Table 3 for details and performance test results.

Example

[0047] Examples 4~6

[0048] Except for the addition of different antioxidants, the rest are the same as in Example 1. See Table 2 and Table 3 for details and performance test results.

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Abstract

The invention relates to a high-efficiency environment-friendly stabilizing agent used for PVC section bars, which belongs to the technical field of PVC processing aids. The stabilizing agent comprises the following raw materials by weight: 20 to 30 of calcium stearate, 20 to 30 of zinc stearate, 10 to 15 of polyol ester, 1 to 3 of an anti-oxidant, 0.5 of an ultraviolet ray absorber, 10 to 30 of hydrotalcite, 3.5 of beta-diketone, 5 to 15 of alpha-phenylindole and 8 to 15 of epoxy compounds. The invention enables the problem of thermal decomposition of PVC section bars during processing to beovercome and the problem of discoloring because of long-term illumination and exposure in air during daily usage of PVC section bars to be solved, meeting developmental needs of section bars in China.

Description

technical field [0001] The invention relates to a high-efficiency and environment-friendly stabilizer for PVC profiles, belonging to the technical field of PVC processing aids. Background technique [0002] As we all know, due to its own structural defects, PVC resin and its products have the disadvantages of easy thermal degradation and aging. Its processing temperature (above 160°C) is higher than the decomposition temperature (120-130°C). Products, it is necessary to add a heat stabilizer in the process of PVC processing and molding to delay and prevent the thermal degradation of PVC resin. Lead salt is the earliest used heat stabilizer, which has strong stabilizing effect and low price, but it will cause certain environmental pollution in the process of production and use. Since 2000, European countries such as Norway, Finland, Sweden, Denmark and the United Kingdom have successively taken actions to ban lead salt stabilizers. Since 2003, my country has also begun to p...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K5/00C08K5/098C08K5/103C08K5/524C08K3/26C08K5/07C08K5/3417
Inventor 张振国呼建强刘春信冯健葛峰
Owner SHANDONG RUIFENG CHEM
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