Preparation method of foam particles, foam particles prepared with same and application of foam particles

A technology of foaming particles and foaming agent, applied in the field of polymer material preparation, can solve the problems of harsh process requirements, hidden dangers of production safety, unfavorable material production, application and promotion, etc.

Active Publication Date: 2016-04-20
江苏欧瑞达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Among the above three methods, although the first method is currently the only method that has entered mature industrial production, it needs to be combined with several other materials in the production. The process is complicated, the cost is high, and it is exclusively owned. It is easy to form a monopoly situation in the market, which is not conducive to the production, application and promotion of this material
[0010] The second method is theoretically feasible, but in actual production, the final product has extremely strict process requirements, and it is difficult to control the production of foamed particles with stable quality. So far, it only stays on paper and has no actual industrial application;
[0011] Although the third method is better than the second method, it involves high temperature and high pressure in production, which buys hidden dangers for production safety in actual production. Moreover, it is intermittent production, and the output is affected, so it needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Proportioning is carried out according to the following mass percentage composition: thermoplastic polyurethane elastomer (AH-650 of Taiwan Xinshun), pellets, 95.5%; manganese dioxide 0.5%; foaming agent is selected from water, acetone, propylene glycol (all commercially available analysis pure) mixture, the mass ratio between the three is 4:1:0.25, the foaming agent mixture is 3%; the foaming penetration enhancer is a mixture of butyl acetate and ethyl acetate (the mixing ratio is 1:2 by mass ), foaming penetration enhancer mixture 0.3%; talc powder (commercially available), 0.1%, glycerol monoglyceride 0.1%; zinc stearate 0.2%; antioxidant 1680.3%.

[0093] Knead the components in the above formula except the foaming agent and the foaming penetration enhancer through a twin-screw extruder, extrude and granulate, and fully dry to obtain pretreated granules;

[0094] Mix the pretreated granules with the foaming agent and the foaming penetration enhancer, stir them thoro...

Embodiment 2

[0097] Proportioning is carried out according to the following mass percentage composition: thermoplastic polyurethane elastomer (Taiwan Baoxuan A853), pellets, 92.5%; manganese dioxide 0.01%; foaming agent selection of water, acetone, propylene glycol (all commercially available analytically pure) Mixture, the mass ratio between the three is 4:1:0.25, the foaming agent mixture is 5%; the foaming penetration enhancer is a mixture of butyl acetate and ethyl acetate (the mixing ratio is 3:1 by mass ratio), and the foaming agent Foam penetration enhancer mixture 0.5%; talc powder (commercially available), 0.8%, glycerol monoglyceride 0.49%; calcium stearate 0.2%, zinc stearate 0.2%; antioxidant 1680.3%.

[0098]Knead and granulate the components in the above formula except for the foaming agent and the foaming penetration enhancer through an internal mixer, and fully dry to obtain pretreated granules;

[0099] Mix the pretreated granules with the foaming agent and the foaming pen...

Embodiment 3

[0102] Proportioning is made according to the following mass percentages: thermoplastic polyurethane elastomer (KT-890 of Bayer, Germany), pellets, 96%; manganese dioxide 2%; foaming agent is selected from water, acetone, propylene glycol (all commercially available analysis pure) mixture, the mass ratio between the three is 4:1:0.25, the foaming agent mixture is 1%; the foaming penetration enhancer is a mixture of butyl acetate and ethyl acetate (mixing ratio is 1:1), Foaming penetration enhancer mixture 0.3%; talc powder (commercially available) 0.1%; glycerol monoglyceride 0.1%; zinc stearate 0.2%; antioxidant 1680.3%.

[0103] The components in the above formula except for the foaming agent and the foaming penetration enhancer are kneaded and granulated by a double-roller, and fully dried to obtain pretreated granules;

[0104] Mix the pretreated granules with the foaming agent and the foaming penetration enhancer, stir them thoroughly, place them in a closed container, an...

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Abstract

The invention relates to a preparation method of foam particles. The preparation method of the foam particles comprises the following steps: S1, a microwave sensitizer is embedded into an expandable base material in a mass ratio of the microwave sensitizer to expandable base material being 0.01-2:92.5-98, and preprocessed particles are obtained; S2, the preprocessed particles obtained in the step 1 are mixed with a foaming agent and a foaming penetration enhancer, the mixture is placed in a closed container and left to stand to enable the foaming agent to penetrate the preprocessed particles sufficiently, and a foamed pre-expanded body is obtained; S3, the foamed pre-expanded body obtained in the step 2 is subjected to microwave heating and subjected to surface cooling anti-sticking processing, foaming is performed, and the foam particles are obtained. The method can be applied to foaming of various polymer elastomers, the process is simple, and requirements for conditions are low. Various thermoplastic polyurethane foam particles prepared with the method have excellent performance.

Description

technical field [0001] The invention relates to the field of polymer material preparation, more specifically, to a method for preparing expanded particles, the prepared expanded particles and applications of the expanded particles. Background technique [0002] Polymer foamed particles are a gas / solid two-phase composite material composed of expandable matrix material and gas molecules. In this two-phase composite material, the air bubbles can be used as the dispersed phase, and the polymer can be used as the continuous phase; or both the air bubbles and the polymer can be used as the continuous phase. The bubbles dispersed in the expandable matrix material can significantly change the morphology, structure and properties of the polymer, so that the expanded polymer particles have some unique properties. They are widely used in household daily necessities, vehicles, insulation materials, packaging materials, electrical appliances, sports facilities, electronic products and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/18C08J9/224C08J9/08C08J9/12C08L75/04C08L23/08C08L53/02C08K13/02
CPCC08J9/08C08J9/122C08J9/18C08J9/224C08J2203/20C08J2323/08C08J2353/02C08J2375/04C08K13/02
Inventor 闵拥军
Owner 江苏欧瑞达新材料科技有限公司
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