PVC environment-friendly composite stabilizer based on graphene oxide salt and preparation method thereof

A compound stabilizer and graphene salt technology, which is applied in the chemical field, can solve the problems of thermal stability that have not been reported in the research, achieve good thermal stability, improve tensile strength, and the effect of cheap and easy-to-obtain raw materials

Active Publication Date: 2015-08-12
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it has been reported in the literature that graphene oxide can improve the barrier properties, mechanical properties, and thermal conductivity of polymer matrix materials, but there is no research report on the use of graphene oxide and its salts to improve the thermal stability of PVC.

Method used

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  • PVC environment-friendly composite stabilizer based on graphene oxide salt and preparation method thereof
  • PVC environment-friendly composite stabilizer based on graphene oxide salt and preparation method thereof
  • PVC environment-friendly composite stabilizer based on graphene oxide salt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a. Preparation of the main stabilizer: react graphene oxide with excess sodium hydroxide in water to obtain graphene oxide sodium. After the reaction solution is filtered through a semi-permeable membrane once, it is centrifuged at 3000 rpm, and the supernatant is discarded. , the lower layer was precipitated and dried to obtain solid sodium graphene oxide; respectively weighed 30 parts of graphene oxide sodium, 30 parts of calcium stearate and 40 parts of zinc stearate in parts by weight, and mixed uniformly to obtain the main stabilizer;

[0032] B, the compounding of auxiliary stabilizer: take by weight respectively 55 parts of main stabilizers that step a makes, 20 parts of stearyl benzoylmethane, 20 parts of epoxy sunflower oil, 2 parts of ultrafine zeolite, 1 part of hydrotalcite, 1 part of oxidized polyethylene wax and 1 part of glycerol monooleate are mixed thoroughly to obtain a PVC environment-friendly composite stabilizer based on graphene oxide salt.

[0033...

Embodiment 2

[0035] a, preparation of main stabilizer: take 35 parts of graphene oxide, 45 parts of potassium hydroxide and 20 parts of calcium hydroxide respectively by weight, mix the three in water and make graphene oxide salt, and then react Add 35 parts of stearic acid in the liquid, neutralize the unreacted alkali to generate metal soap salt, obtain the compound of graphene oxide salt and metal soap salt, which is the main stabilizer;

[0036] B, compounding of auxiliary stabilizers: take by weight respectively 60 parts of main stabilizers, 10 parts of stearoylbenzoylmethane, 5 parts of isovalerylbenzoylmethane, epoxy large 10 parts of soybean oil, 5 parts of ultrafine zeolite, 5 parts of hydrotalcite, 2 parts of oxidized polyethylene wax and 3 parts of glycerol monooleate, and fully mixed to obtain a PVC environment-friendly composite stabilizer based on graphene oxide salt.

[0037] After mixing the PVC environment-friendly composite stabilizer prepared in this example with the PVC...

Embodiment 3

[0039]a. Preparation of the main stabilizer: react graphene oxide with excess sodium hydroxide in water to obtain graphene oxide sodium. After the reaction solution is filtered through a semi-permeable membrane once, it is centrifuged at 3000 rpm, and the supernatant is discarded. , the lower layer was precipitated and dried to obtain solid sodium graphene oxide; graphene oxide was reacted with excess potassium hydroxide in water to obtain graphene oxide potassium, and the reaction solution was filtered through a semi-permeable membrane once, then centrifugally settled at 3000 rpm, discarded The supernatant was removed, and the lower layer was precipitated and dried to obtain solid graphene oxide potassium; 30 parts by weight of graphene oxide sodium, 20 parts of graphene oxide potassium, 20 parts of calcium stearate and 30 parts of zinc stearate were weighed respectively , mixed evenly to obtain the main stabilizer;

[0040] B, the compounding of auxiliary stabilizer: take by...

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Abstract

The invention discloses an oxidized graphene salt-based PVC (polyvinyl chloride) environment-friendly composite stabilizer which comprises the following components in parts by weight: 50-90 parts of a main stabilizer and 10-50 parts of an auxiliary stabilizer, wherein the main stabilizer is a compound of oxidized graphene salt and metal soap salt and can be prepared by reacting oxidized graphene with excessive inorganic base to obtain solid oxidized graphene salt and compounding the solid oxidized graphene salt with the metal soap salt or by reacting oxidized graphene with inorganic base with the excess amount of 20%-50% and adding fatty acid into a reaction solution to neutralize incompletely reacted inorganic base. The compound stabilizer has a good heat stabilization effect, is superior to most of PVC nontoxic compound stabilizers reported in literatures on the aspect of dynamic and static stabilization time, has better reinforcing and toughening effects on PVC resin, can be used for improving the tensile strength and the impact toughness of PVC, increasing the Young modulus of PVC and the like, and has the advantages of simple and convenient preparation method, cheap and easily accessible raw materials, environmental friendliness and the like.

Description

technical field [0001] The invention belongs to the chemical field and relates to a polyvinyl chloride (PVC) heat stabilizer and a preparation method thereof. Background technique [0002] Since PVC plastic has the advantages of self-extinguishing, flame retardant, wear-resistant, high strength, good electrical insulation and chemical stability, and low price, it is widely used. In recent years, the world's total demand for PVC is still showing a growing trend. However, pure PVC resin is extremely sensitive to heat. When the heating temperature reaches above 90°C, a slight thermal decomposition reaction will occur; when the temperature rises to 120°C, the decomposition reaction will intensify, and the PVC resin can be heated at 150°C for 10 minutes. The original white gradually becomes yellow-red-brown-black. The decomposition process of PVC resin is a series of chain reactions caused by the de-HCl reaction, which finally leads to the breakage of macromolecular chains. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/02C08K9/04C08K3/04C08K5/098
Inventor 王明郝永波侯攀姜雪
Owner SOUTHWEST UNIV
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