Carbon dioxide-epoxypropane copolymer foam plastic and preparation method thereof

A technology of carbon dioxide and propylene oxide, which is applied in the field of foam plastics, can solve the problems of limited application and incomplete biodegradation of foam plastics, and achieve the effects of good dimensional stability, good mechanical properties, and good dimensional stability

Active Publication Date: 2014-11-12
中科应化(长春)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The foamed plastics prepared by this method has the advantage of good resilience, but due to the addition of non-biodegradable elastomers to toughen the foam, the foamed plastics cannot be completely biodegraded, which limits its application

Method used

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  • Carbon dioxide-epoxypropane copolymer foam plastic and preparation method thereof
  • Carbon dioxide-epoxypropane copolymer foam plastic and preparation method thereof

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preparation example Construction

[0039] The invention provides a kind of preparation method of carbon dioxide-propylene oxide copolymer foamed plastics, comprises the following steps:

[0040] 1), granulate after mixing carbon dioxide-propylene oxide copolymer and toughening agent, obtain plastic granule, and described toughening agent comprises polyadipate-terephthalate-butylene glycol ester, ethylene-octene copolymer One or more of ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer and thermoplastic polyurethane elastomer rubber;

[0041] 2), the plastic particles are placed in a carbon dioxide environment of 3MPa~8MPa, and the plastic particles absorb carbon dioxide and perform pressure relief treatment to obtain carbon dioxide-propylene oxide copolymer foam plastics; the speed of the pressure relief treatment is 5MPa / s~20MPa / s.

[0042] The present invention adopts carbon dioxide-propylene oxide copolymer and toughening agent as raw material, prepares carbon dioxide-propylene oxide copo...

Embodiment 1

[0058] The number-average molecular weight of 100g is the carbon dioxide-propylene oxide copolymer of 100000g / mol and the polyadipate-terephthalate-butylene glycol ester of 150g in the mixing machine and mixes, then the mixture that obtains is added twin-screw Carry out granulation in a granulator to obtain plastic granules; in the granulation process, the temperature of the first zone of the twin-screw granulator is 120°C, the temperature of the second zone is 165°C, the temperature of the third zone is 170°C, and the temperature of the fourth zone is 170°C. The temperature is 175°C, the temperature of the fifth zone is 175°C, the temperature of the sixth zone is 175°C, the temperature of the seventh zone is 170°C, and the temperature of the die head is 150°C.

[0059] After obtaining the plastic granules, place the plastic granules in an autoclave, fill the autoclave with 5 MPa of carbon dioxide at 25° C., heat the autoclave to 130° C., and hold the pressure at a constant tem...

Embodiment 2

[0063] The number-average molecular weight of 100g is the carbon dioxide-propylene oxide copolymer of 100000g / mol and the polyadipate-terephthalate-butylene glycol ester of 50g are mixed homogeneously in mixer, then the mixture that obtains is added twin-screw Carry out granulation in a granulator to obtain plastic granules; in the granulation process, the temperature of the first zone of the twin-screw granulator is 120°C, the temperature of the second zone is 165°C, the temperature of the third zone is 170°C, and the temperature of the fourth zone is 170°C. The temperature is 175°C, the temperature of the fifth zone is 175°C, the temperature of the sixth zone is 175°C, the temperature of the seventh zone is 170°C, and the temperature of the die head is 150°C.

[0064] After obtaining the plastic granules, place the plastic granules in an autoclave, fill the autoclave with 5 MPa of carbon dioxide at 25° C., heat the autoclave to 140° C., and keep the pressure at a constant tem...

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Abstract

The invention provides a carbon dioxide-epoxypropane copolymer foam plastic which is prepared from a carbon dioxide-epoxypropane copolymer and a flexibilizer, wherein the mass ratio of the carbon dioxide-epoxypropane copolymer to the flexibilizer is 100:(50-200). The invention provides a preparation method of the carbon dioxide-epoxypropane copolymer foam plastic; the preparation method comprises the following steps: (1) mixing the carbon dioxide-epoxypropane copolymer with the flexibilizer, and granulating to obtain plastic particles; and (2) putting the plastic particles into a carbon dioxide environment of 3MPa-8MPa, and depressurizing at a speed of 5MPa / s-20MPa / s after carbon dioxide is absorbed by the plastic particles to obtain the carbon dioxide-epoxypropane copolymer foam plastic. The carbon dioxide-epoxypropane copolymer foam plastic has relatively good resilience while being biodegradable.

Description

technical field [0001] The invention relates to the technical field of foam plastics, in particular to a carbon dioxide-propylene oxide copolymer foam plastic and a preparation method thereof. Background technique [0002] Due to the advantages of light weight, heat insulation, sound absorption, and shock absorption, foam plastics are widely used in various fields and have become an important branch of the application and development of polymer materials. At present, the raw materials for preparing foamed plastics mainly include polyurethane, polystyrene and polyethylene. These materials are all non-biodegradable materials, so the foamed plastics prepared by using these materials are also not biodegradable; The large size makes it difficult to recycle and reuse them; the methods of disposing of this type of foam are usually landfill or incineration, which has caused serious pollution to the environment. Therefore, the research and development of biodegradable foam plastics ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L69/00C08L23/08C08L75/04
Inventor 高凤翔蔡毅周庆海秦玉升王献红
Owner 中科应化(长春)科技有限公司
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