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Modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer for microwave-assisted synthesis of PVC and application thereof

A technology of nano-titanium dioxide and composite stabilizer, applied in the field of polymer material processing aids, can solve the problems of high price of methyl tin mercaptide, poor heat resistance, etc., achieve excellent thermal stabilization effect, improve heat resistance, promote light Degradation effect

Active Publication Date: 2020-03-17
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that methyl tin mercaptide is expensive in the field of heat stabilizers and has poor heat resistance when used alone, and provides a modified nano-titanium dioxide and calcium-magnesium-zinc composite stabilizer for PVC synthesized with microwave assistance and its application

Method used

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  • Modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer for microwave-assisted synthesis of PVC and application thereof
  • Modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer for microwave-assisted synthesis of PVC and application thereof
  • Modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer for microwave-assisted synthesis of PVC and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take 1.820 g TiO 2 Nanoparticles added to deionized water, formulated as 5% TiO 2 Aqueous solution, stirring for 30 minutes, then taking 0.180 g of folic acid and adding deionized water to prepare 0.5% FA aqueous solution, stirring and dissolving for 30 minutes to obtain a uniform solution. Then add the folic acid solution to the titanium dioxide suspension, and stir for 60 minutes so that FA is grafted onto the surface of nano-titanium dioxide particles, filter, wash, and vacuum-dry. powder product.

Embodiment 2

[0052] Get 100 parts of PVC, 50 parts of DOTP, adopt the folic acid modified TiO prepared in the embodiment 1 of microwave heating 2 Mix and dissolve 3 parts of nanoparticles (FA content 9%), 5 parts of calcium metal soap, and 0.5 part of organotin stabilizer, and forcefully stir at 40° C. for 1 hour to obtain a uniform premix; Banbury in the mixer, melt temperature 170-175°C, banbury for 2-3min, wait for the shear force to drop first and then rise, after the end, use a flat vulcanizer to press to 1mm at 100°C to get PVC nanoparticle flakes C -20.

Embodiment 3

[0056] Using microwave heating, the folic acid modified TiO prepared in Example 1 2 3 parts of nanoparticle (FA content 9%) complex, magnesium metal soap (5 parts), and the rest are the same as in Example 2 to obtain PVC nanoparticle sheet M-20.

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Abstract

The invention discloses a modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer for microwave-assisted synthesis of a PVC and application thereof, wherein the modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer is formed by compounding a folic acid modified nano titanium dioxide complex, a stabilizer and an auxiliary stabilizer, and the modifiednano titanium dioxide and calcium-magnesium-zinc composite stabilizer comprises the following components in parts by mass: 1-5 parts of the folic acid modified nano titanium dioxide complex, 0.1-0.5 parts of the stabilizer and 1-10 parts of the auxiliary stabilizer. The modified nano titanium dioxide and calcium-magnesium-zinc composite stabilizer for microwave-assisted synthesis of the PVC is added into a base material, so that the heat resistance of the PVC material can be remarkably enhanced.

Description

technical field [0001] The invention belongs to the field of processing aids for polymer materials, and in particular relates to a modified nano-titanium dioxide and calcium-magnesium-zinc composite stabilizer for PVC synthesized with microwave assistance and an application thereof. Background technique [0002] Polyvinyl chloride heat stabilizers usually use calcium-zinc composite metal salts, organic tin, rare earth, hydrotalcite, and organics to ensure heat-resistant stability during processing and use. During the preparation process of the stabilizer, since most of the molecular weight is relatively large and contains metal, it belongs to the preparation of metal complexes, while the conventional preparation methods include mechanical stirring and mechanical forced stirring, etc., and there are incomplete complexation reactions, unstable products, and inability to stabilize the product. Due to the shortcomings of separation and refining, the use effect and efficiency of ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K9/04C08K3/22C08K5/58C08K5/098C08J5/18
CPCC08J5/18C08J2327/06C08K3/22C08K5/098C08K5/58C08K9/04C08K2003/2241C08K2201/011C08L27/06
Inventor 鲁伊恒陈岩王兵马龙娟李康薛梦瑶
Owner ANHUI UNIV OF SCI & TECH
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