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Formula and preparation method for non-toxic and environment-friendly polyvinyl chloride high-foaming glue for bottle cap

A polyvinyl chloride, non-toxic and environmentally friendly technology, applied in the field of plastic formulation and preparation, can solve the problems of uneven soft and hard foaming density, unsatisfactory sealing effect, insufficient foaming ratio, etc., and achieves low production cost and soft Appropriate hardness and uniform cell density

Inactive Publication Date: 2012-01-11
国家复合改性聚合物材料工程技术研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there have been researches on non-toxic and environmentally friendly high-foaming adhesives, there are problems such as insufficient foaming ratio, or uneven hardness and foaming density, and unsatisfactory sealing effects. Therefore, the development of new non-toxic and environmentally friendly PVC High foaming rubber has become an urgent problem to be solved. It is not only related to the survival and development of a large number of domestic food companies, but also has extremely important practical significance for the upgrading of food packaging materials.

Method used

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  • Formula and preparation method for non-toxic and environment-friendly polyvinyl chloride high-foaming glue for bottle cap

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 of the present invention: the preparation method of non-toxic and environmentally friendly polyvinyl chloride bottle cap high foaming glue, calculated in parts by weight, pour 65 parts of acetyl tributyl citrate plasticizer into a stirring tank for stirring, and keep stirring Add 0.6 parts of EHM401 microsphere foaming agent, 2.5 parts of calcium zinc stabilizer and 15 parts of heavy calcium carbonate with a particle size of 1250 mesh at a speed of 200-250 rpm, and then keep the stirring speed at 1200-1300 R / min, keep stirring for 3 minutes; then gradually add 100 parts of polyvinyl chloride paste resin with a degree of polymerization of 1000 under the condition of keeping the stirring speed at 200-250 r / min, after the addition of the polyvinyl chloride paste resin, keep the stirring speed 1050-1150 rpm, continue to stir until the PVC paste resin is completely infiltrated; finally keep the stirring speed at 1050-1150 rpm, and continue stirring for 3-5 minute...

Embodiment 2

[0028] Embodiment 2 of the present invention: the preparation method of non-toxic and environmentally friendly polyvinyl chloride bottle cap high foaming glue, calculated in parts by weight, pour 70 parts of acetyl tributyl citrate plasticizer into a stirring tank for stirring, and keep stirring Add 1 part of brand EHM401 microsphere foaming agent, 2 parts of calcium zinc stabilizer and 30 parts of heavy calcium carbonate with a particle size of 1000 mesh at a speed of 200-250 rpm, and then keep the stirring speed at 1050-1150 rpm / min, and keep stirring for 4 minutes; then gradually add 100 parts of polyvinyl chloride paste resin with a degree of polymerization of 1000 under the condition of maintaining the stirring speed at 200~250 rev / min, after the addition of the polyvinyl chloride paste resin, keep the stirring speed at 1050-1150 rpm, continue to stir until the PVC paste resin is completely infiltrated; finally keep the stirring speed at 1050-1150 rpm, and continue stirri...

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Abstract

The invention discloses a formula and a preparation method for non-toxic and environment-friendly polyvinyl chloride high-foaming glue for bottle caps. In the formula, the foaming glue comprises the following components in part by weight: 90 to 100 parts of polyvinyl chloride resin, 60 to 70 parts of acetyl tributyl citrate, 1.8 to 2.4 parts of foaming agent, 0.6 to 1 part of dimethyl silicon oiland 10 to 30 parts of heavy calcium carbonate. In the formula, by regulating and controlling the plasticizing action of polyvinyl chloride (PVC) sealant strictly, the plasticizing action of the PVC sealant is matched with the decomposition temperature of the foaming agent, so the prepared PVC high foaming glue is high in foaming magnification, uniform in foaming density, appropriate in softness and hardness and good in a sealing effect, and basically reaches the performance of conventional sealing gaskets in which azodicarbonamide is taken as the foaming agent. The high-foaming glue is non-toxic, low in production cost, easy to produce and good in a using effect.

Description

technical field [0001] The invention relates to a plastic formula and a preparation method, in particular to a non-toxic and environment-friendly polyvinyl chloride bottle cap high foaming glue formula and a preparation method. Background technique [0002] At present, food contact materials have an important impact on food safety. Although inferior food contact materials do not cause immediate harm to consumers' bodies like viruses and bacteria, toxic and harmful substances will migrate when these products are used repeatedly for a long time into food, causing chronic poisoning through accumulation through consumption. From the scandal of toxic and carcinogenic polyvinyl chloride (PVC) cling film in 2005, to poisonous baby bottles, disposable foam lunch boxes, and the ban on the sale of more than 10 kinds of chili pepper products in Asia by Zurich and other countries, the safety of food packaging materials Sexual issues are getting more and more attention. [0003] As a p...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L83/04C08K3/26C08K5/11C08J9/04
Inventor 徐国敏吉玉碧秦舒浩罗恒谭红胡智杨二钘张敏敏杨鸿波谢锋
Owner 国家复合改性聚合物材料工程技术研究中心
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