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A kind of yttrium-calcium-zinc composite heat stabilizer and preparation method thereof

A calcium-zinc compound and thermal stabilizer technology, which is applied in the field of plastic stabilizers in new material additives, can solve the problems of difficulty in meeting the performance requirements of PVC processing and application, poor compatibility, etc., and achieve low production costs, few by-products, The process is convenient and simple

Inactive Publication Date: 2018-09-18
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of this heat stabilizer is still difficult to meet the performance requirements of PVC processing and application, and its compatibility with PVC is also poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of embodiment 1 fumarine rosin yttrium

[0022] According to the molar ratio of 1:1, add fumopimaric acid and yttrium acetate into the reaction kettle, then add absolute ethanol solution until the dissolution is complete, start the stirring device and the reflux condensation device, heat up to 25°C, and stop after 2 hours of reaction time Heating, cooling to room temperature, filtering, washing the filter cake 3 times with absolute ethanol, and drying at a constant temperature of 100°C for 6 hours in a drying oven to obtain a high-purity rosin yttrium product 1.

Embodiment 2

[0023] The preparation of embodiment 2 fumarine rosin yttrium

[0024] According to the molar ratio of 1:1.5, add fumopimaric acid and yttrium acetate into the reaction kettle, then add absolute ethanol solution until the dissolution is complete, start the stirring device and the reflux condensation device, heat up to 40°C, stop after 3 hours of reaction time Heating, cooling to room temperature, filtering, washing the filter cake 3 times with absolute ethanol, and drying at a constant temperature of 100°C for 6 hours in an oven to obtain the high-purity rosin yttrium product 2.

Embodiment 3

[0025] The preparation of embodiment 3 fumarine rosin yttrium

[0026] According to the molar ratio of 1:2, add fumopimaric acid and yttrium acetate into the reaction kettle, then add anhydrous ethanol solution until the dissolution is complete, start the stirring device and the reflux condensation device, heat up to 65°C, and stop after 4 hours of reaction time Heating, cooling to room temperature, filtering, washing the filter cake three times with absolute ethanol, and drying at a constant temperature of 100°C for 6 hours in an oven to obtain the high-purity rosin yttrium product 3.

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Abstract

The invention relates to a novel yttrium-calcium-zinc composite stabilizer and a preparation method thereof. The composite stabilizer is obtained by compounding yttrium fumaropimarate, calcium stearate, zinc stearate and pentaerythritol according to a certain ratio. The yttrium fumaropimarate is prepared by allowing fumaropimaric acid to react with yttrium acetate in an anhydrous ethanol solution to obtain an yttrium fumaropimarate crude product, and then filtering, washing and drying the yttrium fumaropimarate crude product. The composite stabilizer not only is coordinated with active chlorine on PVC and effectively prevents a dehydrochlorination reaction, but also adsorbs and neutralizes hydrogen chloride and eliminates the catalytic action on PVC degradation. The novel yttrium-calcium-zinc composite stabilizer overcomes the defects that a traditional heat stabilizer is toxic and short in thermostabilization time. It is shown by a congo red test that the heat stabilizer has good thermostabilization effect, and thermostabilization time is increased to 110 min or above, however, thermostabilization time of an ordinary rare earth stabilizer is about 30 min generally. The composite stabilizer has good application prospects in the processing field of PVC.

Description

technical field [0001] The invention belongs to the field of plastic stabilizers in new material additives, and relates to a yttrium-calcium-zinc composite heat stabilizer, its preparation and its related application in polyvinyl chloride plastics. Background technique [0002] Polyvinyl chloride (PVC) is one of the most popular thermoplastics produced and used in the world. It has the characteristics of low cost, corrosion resistance, and high strength. PVC has many advantages, but it has the disadvantage of poor thermal stability. In the processing of PVC resin, the processing temperature of rigid PVC is around 180°C, and the processing of soft PVC also requires a higher temperature. When the temperature rises to about 130°C, the PVC resin will degrade and release HCl gas. At the same time, it will change from the original white to yellow, and it will become black if it continues to deepen, losing the original physical and chemical properties of the plastic, making it No ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/098C08K5/053C08L93/04
CPCC08K5/053C08K5/098C08L27/06C08L93/04C08L2201/08C08L2205/025C08L2205/03
Inventor 黄奇良王永强
Owner GUANGXI UNIV FOR NATITIES
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