Environmentally-friendly plastic and preparation method thereof

A technology of environmentally friendly plastics and beta-cyclodextrin, applied in the field of plastics, can solve the problems of poor processing fluidity, non-automatic degradation, environmental pollution, etc., to achieve improved flame retardancy, strong biodegradability, and low equipment requirements high effect

Active Publication Date: 2018-05-18
陈启磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of environment-friendly plastic and its preparation method. The preparation method is simple and easy, has low requirements on equipment, easy to obtain raw materials, convenient post-processing, low price, and is suitable for large-scale production; the prepared environment-friendly plastic It overcomes the problem that the existing traditional plastics cannot be automatically degraded or degrades slowly, and pollutes the environment. At the same time, it overcomes the problems of dispersion, poor compatibility, environmental pollution, and poor processing fluidity caused by adding more additives. Compared with the degradable plastics in the prior art, the environmentally friendly plastics disclosed in the present invention have stronger natural degradability, better comprehensive mechanical properties and longer service life

Method used

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  • Environmentally-friendly plastic and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A preparation method of environmentally friendly plastics, comprising the steps of:

[0028] 1) Preparation of polymerized monomer: Dissolve 100g of all-aminobeta cyclodextrin in 800g of dimethyl sulfoxide, then add 200g of 4-vinylbenzyl chloride to it, stir and react at 30°C for 5 hours, then pour into A precipitate was precipitated in acetone, filtered and washed 3 times with ether, and the solvent was extracted under reduced pressure;

[0029] 2) Preparation of copolymer: 90 g of polymerized monomers, 15 g of vinylpyrrolidone, 15 g of vinyl ferrocene, 60 g of L-vinylglycine, and 0.6 g of azobisisobutyronitrile prepared through step 1) were dissolved in two In 450g of methyl sulfoxide, polymerize at 60°C for 2 hours under a nitrogen atmosphere, then pour into acetone to precipitate, filter, and dry the filter cake in a vacuum oven at 60°C for 10 hours;

[0030] 3) Ion exchange: soak 100 g of the copolymer prepared in step 2) in 10000 g of an aqueous solution of sodiu...

Embodiment 2

[0034] A preparation method of environmentally friendly plastics, comprising the steps of:

[0035] 1) Preparation of polymerized monomers: Dissolve 100 g of all-aminobeta cyclodextrin in 900 g of dimethyl sulfoxide, then add 220 g of 4-vinylbenzyl chloride, stir and react at 32°C for 5.5 hours, then pour into A precipitate was precipitated in acetone, filtered and washed 4 times with ether, and the solvent was extracted under reduced pressure;

[0036] 2) Preparation of copolymer: 70 g of polymerized monomers, 10 g of vinylpyrrolidone, 10 g of vinyl ferrocene, 45 g of L-vinyl glycine, and 0.6 g of azobisisoheptanonitrile prepared by step 1) were dissolved in N , in 350g of N-dimethylformamide, polymerized at 63°C for 2.3 hours under a helium atmosphere, then poured into acetone to precipitate, filtered, and dried the filter cake in a vacuum oven at 62°C for 12 hours;

[0037] 3) Ion exchange: Soak 100 g of the copolymer prepared in step 2) in 9000 g of an aqueous solution of...

Embodiment 3

[0041] A preparation method of environmentally friendly plastics, comprising the steps of:

[0042] 1) Preparation of polymerized monomer: Dissolve 100g of all-aminobeta cyclodextrin in 1000g of dimethyl sulfoxide, then add 240g of 4-vinylbenzyl chloride to it, stir and react at 36°C for 6 hours, then pour into A precipitate was precipitated in acetone, filtered and washed 5 times with ether, and the solvent was extracted under reduced pressure;

[0043] 2) Preparation of copolymer: 80 g of polymerized monomers, 10 g of vinyl pyrrolidone, 10 g of vinyl ferrocene, 50 g of L-vinyl glycine, and 0.7 g of azobisisobutyronitrile prepared in N - In 400g of methylpyrrolidone, polymerize for 2.6 hours under a neon atmosphere at 66°C, then pour into acetone to precipitate, filter, and dry the filter cake in a vacuum oven at 66°C for 13 hours;

[0044] 3) Ion exchange: Soak 100 g of the copolymer prepared in step 2) in 8000 g of an aqueous solution of sodium lignosulfonate with a mass fra...

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Abstract

The invention discloses an environmentally-friendly plastic and a preparation method thereof. The environmentally-friendly plastic comprises the steps of polymeric monomer preparation, copolymer preparation, ion exchange, injection molding and the like. The invention also discloses the environmentally-friendly plastic prepared by using the preparation method of the environmentally-friendly plastic. According to the environmentally-friendly plastic disclosed by the invention, the problem that existing traditional plastics cannot be automatically degraded or are slow in degradation so as to pollute the environment is solved, and the problem that more additives are added to cause low dispersion, low compatibility, environmental pollution and low processing flowability is solved; and comparedwith degradable plastics in the prior art, the environmentally-friendly plastic disclosed by the invention is higher in natural degradability, preferable in mechanical comprehensive performance and longer in service cycle.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to an environmentally friendly plastic and a preparation method thereof. Background technique [0002] With the development of the economy and the progress of the society, people's life is gradually developing in the direction of convenience and efficiency. Plastic products have been widely used in people's production and life, construction fields, and agricultural fields because of their advantages such as light weight, high strength, corrosion resistance, and low price. The widespread use of plastic products brings great convenience to people, but also has serious negative impacts. Most of the discarded plastic products do not degrade or degrade very slowly in the natural environment, forming "white pollution". Waste plastics cannot be automatically degraded, and long-term residues in the natural environment can cause serious environmental pollution, which not only affects the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F290/10C08F226/02C08F226/10C08F230/00C08B37/16B29C45/78
CPCB29C45/78B29C2945/76531C08B37/0012C08F290/10C08G81/02C08G2230/00C08F226/02
Inventor 董廷显褚立波
Owner 陈启磊
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