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Use of dicarboxylate as PVC heat stabilizer

A dicarboxylic acid salt and heat stabilizer technology, which is applied in the field of aliphatic dicarboxylic acid salt as a heat stabilizer for polyvinyl chloride, to achieve the effect of improving long-term stability

Inactive Publication Date: 2006-09-06
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide the new application of aliphatic dicarboxylic acid salt as PVC heat stabilizer, thereby overcome the defective of PVC heat stabilizer used at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Experimental group 1: Mix PVC 100g, DOP 50g, and lead azelate 0.5g evenly, place in an oven, and keep the temperature at 120°C for 20 minutes to prepare PVC test pieces.

[0013] Experimental group 2: mix 100g of PVC, 50g of DOP, and 1g of lead azelate evenly, place in an oven, and keep the temperature at 120°C for 20 minutes to prepare PVC test pieces.

[0014] Experimental group 3: mix 100g of PVC, 50g of DOP, and 2g of lead azelate, put them in an oven, and keep the temperature at 120°C for 20 minutes to prepare PVC test pieces.

[0015] Contrast group: 100g of PVC and 50g of DOP were placed in an oven and kept at 120°C for 20 minutes to obtain PVC test pieces.

[0016] Congo red experiment: Cut the PVC test pieces of the experimental group and the comparison group into 2mm×2mm granular samples, put them into test tubes, and after slight vibration, keep the powdery samples at a certain temperature in static air. Measure the time when the decomposed hydrogen chloride...

Embodiment 2

[0020] Experimental group 1: 100g of PVC, 50g of DOP, and 0.5g of calcium pimelate were evenly mixed, placed in an oven, and kept at 120°C for 20 minutes to prepare PVC test pieces.

[0021] Experimental group 2: Mix 100g of PVC, 50g of DOP, and 1g of calcium pimelate evenly, place in an oven, and keep the temperature at 120°C for 20 minutes to prepare PVC test pieces.

[0022] Experimental group 3: 100g of PVC, 50g of DOP, and 1.5g of calcium pimelate were evenly mixed, placed in an oven, and kept at 120°C for 20 minutes to prepare PVC test pieces.

[0023] Experimental group 4: Mix 100g of PVC, 50g of DOP, and 3g of calcium pimelate, put them in an oven, and keep the temperature at 120°C for 20 minutes to prepare PVC test pieces.

[0024] Contrast group: 100g of PVC and 50g of DOP were placed in an oven and kept at 120°C for 20 minutes to obtain PVC test pieces.

[0025] The PVC test pieces of the experimental group and the comparison group were subjected to the Congo red t...

Embodiment 3

[0028] Experimental group 1: 100 g of PVC, 50 g of DOP, and 2 g of calcium pimelate (C=7) were evenly mixed, placed in an oven, and kept at 120° C. for 20 minutes to prepare PVC test pieces.

[0029] Experimental group 2: 100 g of PVC, 50 g of DOP, and 2 g of calcium azelate (C=8) were mixed evenly, placed in an oven, and kept at 120° C. for 20 minutes to prepare PVC test pieces.

[0030] Experimental group 3: 100 g of PVC, 50 g of DOP, and 2 g of calcium sebacate (C=10) were evenly mixed, placed in an oven, and kept at 120° C. for 20 minutes to prepare PVC test pieces.

[0031] Experimental group 4: 100g of PVC, 50g of DOP, and 2g of calcium dimer acid (C=36) were evenly mixed, placed in an oven, and kept at 120°C for 20 minutes to prepare PVC test pieces.

[0032] Contrast group: 100g of PVC and 50g of DOP were placed in an oven and kept at 120°C for 20 minutes to obtain PVC test pieces.

[0033] The PVC test pieces of the experimental group and the comparison group were su...

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Abstract

The invention relates to a new use of dicarboxylates as PVC heat stabilizer. The aliphatic dicarboxylates is nontoxic and environment-friendly, is of cheap price, lubricating quality and high metal content, and can improve inherent heat stability, paintability and long-term stability of PVC, so it has a good industry application prospect.

Description

technical field [0001] The present invention relates to a new application of dicarboxylic acid salts, in particular to the application of aliphatic dicarboxylic acid salts as heat stabilizers for polyvinyl chloride (PVC). Background technique [0002] In recent years, with the continuous growth of the amount of PVC materials at home and abroad, varieties of PVC heat stabilizers are also emerging. Currently commonly used PVC heat stabilizers mainly include lead salt heat stabilizers, metal soap heat stabilizers, organotin heat stabilizers, organic antimony stabilizers, rare earth stabilizers, etc. Lead salts (such as tribasic lead sulfate 3PbO·PbSO 4 ·H 2 O, dibasic lead stearate 2PbO·Pb(C 17 h 35 COO) 2 , lead dibasic phosphite (dibasic phosphorous acid) 2PbO·PbHPO 3 ·H 2 O) is the earliest and most widely used heat stabilizer, which has been playing a leading role in the field of stabilizer applications for many years, but it is toxic and not environmentally friendly...

Claims

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Application Information

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IPC IPC(8): C08L27/08C08K5/092
Inventor 刘伟区刘艳斌
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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