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Corrosion resistant grafted polymer, preparation method of grafted polymer and plastic bottle which is used for storing high-corrosion pesticide and made by using grafted polymer as raw material

A grafted polymer, corrosion-resistant technology, applied in the field of plastic organic materials, can solve problems such as high production costs, erosion, and danger, and achieve cost-saving effects

Inactive Publication Date: 2018-01-16
安徽万有新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plastic containers can be seen everywhere in life, such as barrels, bottles, cans, cups, etc., because they are widely used, especially for plastic bottles that store highly corrosive pesticides, they need to show a strong barrier to the corrosiveness of pesticides Effect, if the corrosion resistance of the plastic container is poor, and the pesticide product causes a certain erosion to the plastic itself, not only seriously affects the purity of the pesticide product, but also easily causes different degrees of danger. Although there are corrosion-resistant alloy materials in the prior art, but The production cost is relatively high, how to improve the anti-corrosion performance of pesticide plastic bottles and reduce the production cost has become a technical problem that needs to be solved at present

Method used

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  • Corrosion resistant grafted polymer, preparation method of grafted polymer and plastic bottle which is used for storing high-corrosion pesticide and made by using grafted polymer as raw material
  • Corrosion resistant grafted polymer, preparation method of grafted polymer and plastic bottle which is used for storing high-corrosion pesticide and made by using grafted polymer as raw material
  • Corrosion resistant grafted polymer, preparation method of grafted polymer and plastic bottle which is used for storing high-corrosion pesticide and made by using grafted polymer as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Preparation of ethylene / vinyl alcohol / vinyl acetate copolymer-graft-poly(ε-caprolactone). Graft polymers are formed by ring-opening polymerized lactones introduced on the hydroxyl functionality of ethylene / vinyl alcohol / vinyl acetate copolymers.

[0073] The specific preparation method is as follows: firstly, ethylene / vinyl alcohol / vinyl acetate copolymer is introduced into a reactor preheated to 205°C and stirred, and the ε-caprolactone monomer preheated to 175°C is placed in The ethylene / vinyl alcohol / vinyl acetate copolymer was introduced into the reactor immediately after stirring. Control the mass ratio of ethylene / vinyl alcohol / vinyl acetate copolymer to ε-caprolactone monomer to be 1.1:1, and obtain a uniform viscous mixture after 15-30 minutes. It has been determined that during the above process in this embodiment, when the mixed system melts, the set point temperature decreases from 205°C to 178°C. Then add the initiator into the mixing system at 178°C for d...

Embodiment 2

[0078] Preparation of ethylene / vinyl alcohol / ethyl acrylate copolymer-graft-poly(delta-valerolactone). The graft polymer was formed by introducing ring-opening polymerized delta-valerolactone on the hydroxyl functionality of an ethylene / vinyl alcohol / ethyl acrylate copolymer.

[0079] The same preparation method as in Example 1 was used.

[0080] In this embodiment, the ethylene monomer content in the ethylene / vinyl alcohol / ethyl acrylate copolymer is 39%. The formulation ratio used in this example is: 239 g of ethylene / vinyl alcohol / ethyl acrylate copolymer, 308 g of δ-valerolactone, and 21 g of dibutyltin dilaurate as the initiator. Analysis of the sample after 15 minutes of reaction showed a 100% conversion of the monomers and a measured average degree of polymerization equal to 3.5.

Embodiment 3

[0082] A plastic bottle for long-lasting storage of highly corrosive pesticides.

[0083] As shown in the figure, the bottle body of the plastic bottle that can store highly corrosive pesticides for a long time adopts a five-layer composite structure, which includes an inner layer 1, a high-efficiency barrier layer 2 and an outer layer 3 in order from the inside to the outside. The high-efficiency barrier layers 2 are connected by an adhesive layer 4, and the high-efficiency barrier layer 2 and the outer layer 3 are connected by an adhesive layer 5, wherein

[0084] The material of the high-efficiency barrier layer 2 is the graft polymer prepared in Example 1, the material of the inner layer 1 is high-density polyethylene, and the material of the outer layer 3 is metallocene linear low-density polyethylene, The material of the adhesive layer is an anhydride-modified ethylene-vinyl acetate copolymer.

[0085] The mouth of the bottle is sealed by an aluminum foil gasket, and th...

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Abstract

The invention belongs to the technical field of plastic organic materials, and particularly relates to a corrosion resistant grafted polymer, a preparation method of the grafted polymer and a pesticide plastic bottle made by using the grafted polymer as a material. The corrosion resistant grafted polymer disclosed by the invention is random copolymer-g-polylactone containing vinyl alcohol monomers. The preparation method comprises the following steps: mixing the random copolymer containing vinyl alcohol monomers, at least one lactone ring monomer and at least one initiator or catalyst to forma uniform solvent-free mixture, and performing a graft polymerization reaction, wherein the reaction time is not more than one hour. The grafted polymer material and the plastic bottle made from the material disclosed by the invention have a relatively strong anti-corrosion effect which is very obvious.

Description

technical field [0001] The invention belongs to the technical field of plastic organic materials, in particular to a corrosion-resistant graft polymer, a preparation method of the graft polymer and a pesticide plastic bottle made of the graft polymer. Background technique [0002] Plastic containers can be seen everywhere in life, such as barrels, bottles, cans, cups, etc., because they are widely used, especially for plastic bottles that store highly corrosive pesticides, they need to show a strong barrier to the corrosiveness of pesticides Effect, if the corrosion resistance of the plastic container is poor, and the pesticide product causes a certain erosion to the plastic itself, not only seriously affects the purity of the pesticide product, but also easily causes different degrees of danger. Although there are corrosion-resistant alloy materials in the prior art, but The production cost is high, how to improve the anticorrosion performance of the pesticide plastic bottl...

Claims

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Application Information

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IPC IPC(8): C08G63/08C08G63/80B65D1/02B65D85/82B65D85/84
Inventor 徐金娇
Owner 安徽万有新材料有限公司
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