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Method of repeatedly modifying polymeric thin films on plastic surface

A polymer film and multiple repetition technology, applied in the field of polymer film that can be repeatedly modified on the surface of plastics, can solve problems such as damage to the digestive system, and achieve the effects of low price, high yield, and simple preparation

Active Publication Date: 2016-07-06
YANTAI ZHONGKE RES INST OF ADVANCED MATERIALS & GREEN CHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polystyrene is also a major marine flotsam and can cause digestive damage to marine life that ingests this plastic

Method used

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  • Method of repeatedly modifying polymeric thin films on plastic surface
  • Method of repeatedly modifying polymeric thin films on plastic surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of polymethyl methacrylate plastic with anti-bioadhesion properties

[0027] A. Put 24.4mL of 2-hydroxyethyl methacrylate and 87.7mL of triethylamine into a round bottom flask, and add 29.6mL of 2-bromoisobutyryl bromide and 100mL of dichloromethane dropwise with a dropping funnel The mixture was reacted at room temperature. After the reaction is completed, filter and wash repeatedly with hydrochloric acid, saturated sodium carbonate, and saturated brine respectively to obtain a light yellow oily liquid with aroma, which is separated with a silica gel column to obtain a bromine-containing initiator monomer. Add the bromine-containing initiator monomer into methyl methacrylate at a ratio of 5%, and then add a small amount of azobisisobutyronitrile as an initiator for continuous bulk polymerization, and stir well and evenly. First prepolymerize at 50°C for 5 hours, then pour the transparent and viscous prepolymer into a mold, and continue bulk polymerization ...

Embodiment 2

[0034] Preparation of polystyrene lubricated plastic with low coefficient of friction and reusable multiple times

[0035] A. The synthesis of bromine-containing initiator is as described in Example 1. Add the bromine-containing initiator monomer into styrene at a ratio of 1%, and then add a small amount of azobisisobutyronitrile as an initiator for continuous bulk polymerization, and stir well and evenly. First prepolymerize at 90°C for 1 hour, then pour the transparent and viscous prepolymer into a mold, and continue bulk polymerization at 200°C for 6 hours to obtain a modified polystyrene transparent plastic;

[0036] B. Add 9g of sodium methacrylate, 62mg of 2,2-bipyridine, 288mg of cuprous bromide, and 27mL of deionized water into the reactor, stir well under the protection of argon, and add the initiator into the reactor to integrate polystyrene sheet plastic. The reaction was carried out at 60° C. for 12 hours. A polystyrene plastic sheet modified with a sodium polym...

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Abstract

The present invention discloses a method of repeatedly modifying polymeric thin films on plastic surface. Firstly, a bromine-containing initiator monomer is synthesized, then a few of the monomers are added into styrene or methyl methacrylate, and a traditional continuous bulk polymerization technology is used to obtain modified polystyrene or polymethyl methacrylate plastics. Then a surface initiated atom transfer free radical polymerization method is used to modify different polymeric thin films on the surface of the plastics to achieve a variety of functions. The prepared plastics by using the method are subjected to mechanical processing, polishing, grinding and other methods to repeatedly modify the polymers. By being modified with the various polymers, the prepared plastics can realize different functions, such as anti-bioadhesive materials in the biomedical field, high performance circuit boards in the electronic industry field, equipment with low coefficient of friction in the lubricating material field, etc.

Description

technical field [0001] The invention relates to a method for repeatedly modifying a polymer film on a plastic surface. Background technique [0002] Counting from the birth of celluloid, the first plastic product, the plastics industry has a history of 120 years. The invention of plastic has completely changed human life. Among all plastics, polystyrene and polymethyl methacrylate are easy to process and shape, and have the advantages of transparency, cheapness, rigidity, insulation, and good printability. They can be widely used in the light industry market, daily decoration, lighting instructions and packaging etc. In terms of electricity, it is a good insulating material and thermal insulation material. It can be used to make various instrument casings, lampshades, optical and chemical instrument parts, transparent films, capacitor dielectric layers, etc. Generally speaking, the surface of plastic products is relatively difficult to change, so it is necessary to use se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/16C08L25/06C08L33/12
Inventor 周峰杜韬于波王晓龙
Owner YANTAI ZHONGKE RES INST OF ADVANCED MATERIALS & GREEN CHEM ENG
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