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Compound stabilizer for polyvinyl chloride (PVC) and preparation method thereof

A compound stabilizer and stabilizer technology, applied in the chemical field, can solve the problems of poor thermal stability and poisonous PVC heat stabilizer, and achieve the effects of low cost, simple and easy preparation method, and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2014-03-26
重庆莘然高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in view of the shortcomings of current PVC heat stabilizers such as toxicity and poor thermal stability, it is necessary to develop a new type of non-toxic and environmentally friendly PVC heat stabilizer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a. Preparation of main stabilizer: Weigh 25 parts of maleic anhydride, 27 parts of ethanol, 7 parts of calcium oxide and 5 parts of zinc oxide in parts by mole, and the stirring rate of maleic anhydride is 1000~1300rpm. Add ethanol under low temperature, stir and react after adding, after reacting for 2 hours, add the mixture of calcium oxide and zinc oxide, adjust the stirring speed according to the viscosity of the reaction solution, after the reaction is complete, take out the product, and dry it at a temperature of 130-150°C , that is, the main stabilizer, and the yield is more than 95%;

[0032] B, compounding of auxiliary stabilizer: take by weight respectively 50 parts of step a gained main stabilizer, 10 parts of stearyl benzoylmethane, 7 parts of epoxy soybean oil, 7 parts of epoxy fatty acid methyl ester, 5 parts of polyvinyl alcohol, 1 part of dipentaerythritol, 10 parts of calcium carbonate, and 10 parts of calcium stearate are thoroughly mixed to obtain a c...

Embodiment 2

[0035] a. Preparation of the main stabilizer: Weigh 26 parts of maleic acid, 28 parts of ethanol, 8 parts of sodium carbonate and 6 parts of potassium carbonate in molar parts respectively. Add the mixture of sodium carbonate and potassium carbonate at low temperature, and stir the reaction after the addition. After the reaction for 1 hour, add ethanol. After the reaction is complete, take out the product and dry it at a temperature of 130-150°C to obtain the main stabilizer with a yield of 95%. above;

[0036] B, compounding of auxiliary stabilizer: take by weight respectively 45 parts of step a gained main stabilizer, 10 parts of stearyl benzoylmethane, 7 parts of epoxy soybean oil, 7 parts of epoxy fatty acid methyl ester, 5 parts of polyvinyl alcohol, 1 part of dipentaerythritol, 12 parts of calcium carbonate, and 13 parts of calcium stearate are thoroughly mixed to obtain a composite stabilizer for PVC.

[0037] After mixing the compound stabilizer for PVC prepared in th...

Embodiment 3

[0039]a. Preparation of main stabilizer: Weigh 26 parts of maleic anhydride, 24 parts of ethanol, 8 parts of sodium carbonate and 7 parts of potassium carbonate in molar parts respectively, and the stirring speed of maleic anhydride is 1000~1300rpm Add the mixture of ethanol, sodium carbonate and potassium carbonate at low temperature, and stir the reaction after the addition is complete. After the reaction is complete, take out the product and dry it at a temperature of 130-150°C to obtain the main stabilizer with a yield of more than 95%.

[0040] B, compounding of auxiliary stabilizer: take by weight respectively 40 parts of step a gained main stabilizer, 12 parts of stearyl benzoylmethane, 10 parts of epoxy soybean oil, 10 parts of epoxy fatty acid methyl ester, 7 parts of polyvinyl alcohol, 1 part of dipentaerythritol, 10 parts of calcium carbonate, and 10 parts of calcium stearate are thoroughly mixed to obtain a composite stabilizer for PVC.

[0041] After mixing the co...

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Abstract

The invention discloses a compound stabilizer for polyvinyl chloride (PVC) and a preparation method thereof. The compound stabilizer for PVC is prepared from the following raw materials in parts by weight: 10-70 parts of main stabilizer and 30-90 parts of auxiliary stabilizer, wherein the main stabilizer is a compound of a maleic acid monoester, a maleic acid diester, a maleic acid monoester salt and a maleic acid compound salt. The preparation method of the compound stabilizer for PVC comprises preparation of the main stabilizer and compounding of the auxiliary stabilizer. Compared with the prior art, the compound stabilizer has the beneficial effects that a non-toxic and environment-friendly compound stabilizer for PVC with a good heat stabilization effect is provided; meanwhile, the compound stabilizer for PVC is simple and feasible in preparation method, cheap and available in raw materials, high in yield, low in cost, free of toxicity and environment-friendly. The compound stabilizer for PVC disclosed by the invention is applicable to different grades of PVC soft and hard products, and has a broad application prospect.

Description

technical field [0001] The invention belongs to the chemical field, and in particular relates to a composite stabilizer for PVC and a preparation method thereof. Background technique [0002] PVC (polyvinyl chloride) is a general-purpose plastic widely used in construction, light industry, chemical industry, electronics, aerospace, automobile, agriculture and other fields. In recent years, my country's PVC industry has shown a trend of vigorous development. In 2012, the domestic production volume has reached more than 13 million tons. The biggest disadvantage of PVC is its poor thermal stability. In order to inhibit the degradation of PVC during processing, it is usually necessary to add heat stabilizers during PVC processing. Existing PVC heat stabilizers mainly include lead salt stabilizers, organotin stabilizers, barium-cadmium composite stabilizers, calcium-zinc composite stabilizers, etc. Currently, the lead salt stabilizers with strong toxicity are the most used. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/11C08K5/098C08K13/02
Inventor 李国兴黄兴亮王明
Owner 重庆莘然高分子材料有限公司
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