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Hydrophilic waste rubber powder, high-strength composite hydrogel as well as preparation method and application thereof

A technology of composite hydrogel and waste rubber powder, which is applied in the preparation of hydrophilic waste rubber powder and the preparation of high-strength composite hydrogel based on hydrophilic waste rubber powder, which can solve the problems of poor compatibility and achieve mechanical properties Improvement, excellent mechanical properties, and highlight the effect of environmental protection contribution

Active Publication Date: 2021-10-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem of poor compatibility of waste rubber in the prior art, the purpose of the present invention is to provide a hydrophilic waste rubber powder and a preparation method thereof, in which a hydrophilic polymer chain is formed on the surface of the waste rubber powder, thereby improving Hydrophilic properties of waste rubber powder

Method used

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  • Hydrophilic waste rubber powder, high-strength composite hydrogel as well as preparation method and application thereof
  • Hydrophilic waste rubber powder, high-strength composite hydrogel as well as preparation method and application thereof
  • Hydrophilic waste rubber powder, high-strength composite hydrogel as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A-G

[0032] Embodiment A-G: Preparation of hydrophilic modified waste rubber powder

[0033] The cleaning method of the waste rubber powder in Examples A-G is as follows: the crushed and sieved waste rubber powder with a mesh number of 50-300 is washed with acetone until the color of the lotion is clear and transparent, and then dried in a blast oven at 50°C for later use .

Embodiment A

[0035] The waste rubber used in this embodiment is nitrile rubber.

[0036] The preparation method of hydrophilic waste rubber powder provided by the present embodiment comprises the following:

[0037] (1) Weigh 0.005 parts of clean waste rubber powder with a mesh number of 150, mix and stir with 1 part of toluene, then add 0.01 parts of benzoyl peroxide, stir at room temperature for 12 hours, and then filter the resulting mixture to obtain surface-rich The waste rubber powder of the initiator;

[0038] (2) Add 0.05 parts of the treated waste rubber powder and 100 parts of distilled water into the container in sequence, stir for 12 hours, then inject nitrogen into the container for 10 minutes, add 0.01 parts of acrylamide, and then place it in a water bath at 60°C for 6 hours after stirring; Obtain a reaction solution containing hydrophilic waste rubber powder; filter the obtained reaction solution, wash the filtered product with a large amount of water to remove impurities,...

Embodiment B

[0040]The waste rubber used in this embodiment is nitrile rubber.

[0041] The preparation method of hydrophilic waste rubber powder provided by the present embodiment comprises the following:

[0042] (1) Weigh 0.05 parts of clean waste rubber powder with a mesh number of 150, mix and stir with 1 part of toluene, then add 0.06 parts of benzoyl peroxide, stir at room temperature for 24 hours, and then filter the resulting mixture to obtain a surface rich in The waste rubber powder of the initiator;

[0043] (2) Add 0.05 parts of the treated waste rubber powder and 100 parts of distilled water into the container in turn, stir for 12 hours, then inject nitrogen gas into the container for 13 minutes, add 0.1 parts of acrylamide, and then place it in a water bath at 60°C for 6 hours and stir to react. Obtain a reaction solution containing hydrophilic waste rubber powder; filter the obtained reaction solution, wash the filtered product with a large amount of water to remove impuri...

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Abstract

The invention discloses hydrophilic waste rubber powder, high-strength composite hydrogel as well as a preparation method and application thereof. The method comprises the following steps: introducing an initiator on the surface of waste rubber powder by adopting a solvent soaking method, and then initiating hydrophilic monomer polymerization by utilizing the initiator on the surface of the waste rubber powder, so the surface of the waste rubber powder has a hydrophilic polymer chain, and the hydrophilic waste rubber powder is obtained. The high-strength waste rubber powder composite polyacrylamide hydrogel is further prepared by using the waste rubber powder with high mechanical property as a reinforcing and toughening filler, and a hydrogel matrix and the waste rubber powder have strong physical entanglement interaction. The prepared high-strength composite hydrogel is expected to be used as an oil and gas field water shutoff agent.

Description

technical field [0001] The invention belongs to the technical field of waste rubber recycling and application, and relates to the technology of using waste rubber to prepare gel, in particular to the technology and application of preparing hydrophilic waste rubber powder and preparing high-strength composite hydrogel based on hydrophilic waste rubber powder. Background technique [0002] With the development of the automobile industry, the waste rubber produced is increasing every year. In order to reduce the environmental pollution caused by waste rubber, people usually use the waste rubber powder obtained after crushing waste rubber products as filler to prepare composite materials to reduce costs. However, the unmodified scrap rubber powder suffers from a decrease in the performance of composites due to the lack of compatibility and interfacial interaction with other polymer matrices, which greatly limits the recycling of scrap rubber powder. How to improve the compatibi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/02C08F220/56C08L33/26C08L51/04C09K8/44
CPCC08F279/02C09K8/44C08J3/075C08L33/26C08L2205/03C08L2205/025C08J2333/26C08J2451/04C08F220/56C08L51/04
Inventor 郑静曹振兴吴睿吴锦荣袁朝阳
Owner SICHUAN UNIV
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