Novel composite heat stabilizer and application thereof in polyvinyl chloride material

A composite heat stabilizer, polyvinyl chloride technology, applied in the application of polyvinyl chloride materials, the field of new rare earth composite stabilizers, can solve the problems of central nervous system toxicity, high price, quality gap, etc., to reduce torque, promote Effects of plasticization and good processability

Inactive Publication Date: 2015-10-07
JIANGSU ATE DONGTAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organotin stabilizers have good heat stabilization effect, but they are expensive and potentially toxic to the human central nervous system
Calcium / zinc stabilizers are the most active research and development frontier products among composite stabilizers in recent years, but there is still a big gap in quality between domestic and foreign heat stabilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The composition of the new composite heat stabilizer is: 40% phthalic acid metal salt, 25% fatty acid rare earth, 8% β-diketone, 2% calcium acetylacetonate, 4% composite antioxidant, 10% PE wax, 11% ten Hexaol.

[0017] Add 100 parts of PVC and 4 parts of composite heat stabilizer to the high-speed mixer, start the motor at low speed, and enter high-speed mixing after normal, wait for the temperature to rise to 60 ° C, add 35 parts of DOP to the material at high speed, and at 80 At about ℃, add 20 parts of calcium carbonate and 0.5 parts of PE wax into the material, continue to stir until the temperature rises to 120 ℃, then discharge the material, knead on a double-roll mill at 170 ℃ for 5 minutes, and release the sheet.

Embodiment 2

[0019] The composition of the new composite heat stabilizer is: 30% phthalic acid metal salt, 40% fatty acid rare earth, 6% β-diketone, 1.5% calcium acetylacetonate, 4.5% composite antioxidant, 8% PE wax, 10% ten Hexaol.

[0020] In 100 parts of PVC, add 2 parts of processing aid ACR, 10 parts of calcium carbonate, 0.3 parts of stearic acid, 4 parts of composite heat stabilizer, stir in a high-speed mixer until the temperature rises to 120 ° C, and then discharge, at 180 ℃ kneading on a two-roll mill for 5 minutes, and then the tablets were produced.

Embodiment 3

[0022] The composition of the new composite heat stabilizer is: 35% phthalic acid metal salt, 40% fatty acid rare earth, 6% β-diketone, 3% calcium acetylacetonate, 3% composite antioxidant, 6% PE wax, 7% ten Hexaol.

[0023] In 100 parts of PVC, add 5 parts of DOP, 40 parts of calcium carbonate, 0.6 parts of stearic acid, 0.4 parts of paraffin wax, and 4 parts of composite heat stabilizer, stir in a high-speed mixer until the temperature rises to 120 ° C, and then discharge the material. Knead on a double-roll mill at 180°C for 5 minutes, and then produce tablets.

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PUM

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Abstract

The invention relates to a novel composite heat stabilizer which is characterized by containing phthalic acid metal salt, fatty acid rare earth, beta-diketone, calcium acetylacetonate, a composite antioxidant, PE wax and hexadecanol. The novel composite heat stabilizer provided by the invention can be used for comprehensively and effectively enhancing the heat stability of polyvinyl chloride, for instance, a polyvinyl chloride material with the composite heat stabilizer added has longer Congo red discoloring time and more excellent initial colorability and dynamic heat stability, has good processing property and is capable of promoting the plasticization, reducing the torque of a fusant, free of toxicity, environmental-friendly, capable of substituting an organic tin heat stabilizer, a lead heat stabilizer or other heat stabilizers with higher toxicity.

Description

technical field [0001] The invention relates to a novel composite heat stabilizer and its application, in particular to a novel rare earth composite stabilizer mainly composed of phthalic acid metal salt and fatty acid rare earth and its application in polyvinyl chloride materials. Background technique [0002] Polyvinyl chloride is one of the five most commonly used synthetic resins in the world, and its products are also a general-purpose plastic product with a large output. It is widely used in plastic-steel doors and windows, floors, water pipes, automotive interiors, cables, agricultural films, etc. , but its heat stabilizer is poor, and severe thermal degradation will occur when processing at 160-220 ° C, so a heat stabilizer needs to be added during processing. Lead salt is the most cost-effective heat stabilizer, but its toxicity is high and cumulative. In 2000, the EU PVC industry signed a voluntary commitment agreement, which gave a clear timetable for banning lead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08K5/00C08K5/098C08K5/07C08K5/05C08K5/13C08K5/103C08K5/521
CPCC08L27/06C08K2201/014C08L2201/08C08L23/06C08K5/005C08K5/098C08K5/07C08K5/05C08K5/13C08K5/1345C08K5/521
Inventor 张莉娜方春平
Owner JIANGSU ATE DONGTAI NEW MATERIALS TECH
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