Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving performances of water-swelling rubber

A water-swellable rubber and performance technology, which is applied in the field of mesoporous molecular sieves, can solve the problems of affecting the water-swelling performance and physical properties of WSR, weakening long-term water retention and reusability, and poor dispersion of hydrophilic substances. The effect of low cost and simple processing technology

Inactive Publication Date: 2012-11-28
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the differences in structure and properties, traditional water-absorbing rubber generally has the problem of poor dispersion of hydrophilic substances in the rubber matrix.
Hydrophilic substances are easy to fall off from the rubber network, which affects the water swelling performance and physical properties of WSR, and weakens its long-term water retention and reusability.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1: Dissolve 1 gram of γ-aminopropyltriethoxysilane in a small amount of acetone, and then evenly spray it on mesoporous molecular sieve MCM-41 (with holes). After the acetone volatilizes naturally, the modified The mesoporous molecular sieve MCM-41 was dried at 80°C for 4 hours.

[0032] Step 2: Blend the modified molecular sieve and water-absorbent rubber according to the following formula: NR 100, stearic acid 1.0, zinc oxide 5.0, polyacrylamide 20, modified molecular sieve MCM-41 (porous) 2, antioxidant D 1.0 , accelerator CZ 0.4, accelerator TT 0.15, sulfur 2.0.

[0033] Plasticize the natural rubber for 2 minutes on the open mill, then add stearic acid, polyacrylamide, modified molecular sieve MCM-41 (with holes), zinc oxide, anti-aging agent D, accelerator CZ, TT and sulfur, etc. Evenly, a raw rubber mixture with good dispersibility was obtained, and the vulcanization curve was measured on the ODR-100E vulcanizer, and then vulcanized by the MV-90E plate vulc...

Embodiment 2

[0036]Step 1: Dissolve 1 gram of vinylphenylethylenediaminepropyltrimethoxysilane monohydrochloride in a small amount of ethanol, hydrolyze it for 3 minutes, and spray it evenly on mesoporous molecular sieve SBA-15 (non-porous). After the ethanol volatilized naturally, the modified SBA-15 (non-porous) was dried at 90°C for 5 hours.

[0037] Step 2: Blend the modified molecular sieve and water-absorbent rubber according to the following formula: EPDM 100, stearic acid 1.0, zinc oxide 5.0, sodium polyacrylate 20, modified molecular sieve SBA-15 (non-porous) 2, antioxidant D 1.0 , accelerator CZ 0.4, accelerator TT 0.15, DCP 2.0.

[0038] The obtained composite material was observed by scanning electron microscope and transmission electron microscope, and it was found that the molecular sieve was uniformly dispersed in the water-absorbing rubber matrix in nanometer size, indicating that the expanded water-absorbing rubber / mesoporous molecular sieve (non-porous) nanocomposite mate...

Embodiment 3

[0040] Step 1: Add 10 grams of modified MCM-41 (with holes) obtained in Example 1 into an appropriate amount of acetone, then add 3 grams of isooctyl acrylate and 0.1 gram of photoinitiator, and stir for 10 minutes. Then place it in a tray, wait for the acetone to volatilize naturally, dry it, and treat it with ultraviolet light for a certain period of time to obtain modified MCM-41 (with holes).

[0041] Step 2: Dissolve 15 grams of water-absorbent resin monomer (5 g each of N,N′-methylenebisacrylamide, ammonium persulfate and sodium sulfite) in distilled water, and add 1 to 3 g of MCM-41 (porous ), make it fully hydrated and dispersed in the reaction system, finally add 30 g of natural rubber latex, and react at 60°C for 4~5 h under the protection of nitrogen to obtain the intermediate. The intermediate is dried, pulverized and vulcanized to obtain a two-component interpenetrating network water-absorbing rubber. Vulcanization formula: glue 100 g, ZnO 5 g, stearic acid 1 g, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for improving the performances of water-swelling rubber and relates to a nano-composite material technology, which comprises the following steps: mixing a mesoporous molecular sieve with the water-swelling rubber according to the weight ratio of 100:0.1-10, leading the mesoporous molecular sieve to be uniformly dispersed in a matrix of the water-swelling rubber and preparing a water-swelling rubber composite material product, wherein the mesoporous molecular sieve is divided into the structure without pore canals and the structure with the pore canals and mainly in the shape of regular spheres, and the average particle size is 80-100nm; and the water-swelling rubber is a novel functional polymer material which is prepared by introducing hydrophilic groups or hydrophilic components into the matrix of the rubber, and the water-swelling rubber can expand to a plurality of times and hundreds of times of the weight or the volume of the water-swelling rubberafter absorbing water and produce greater expansion pressure. The water-swelling rubber formed by modification through the mesoporous molecular sieve has strong chemical stability, high water swelling ratio, high strength, durability and reusability, and can overcome the deficiencies of the existing water-swelling rubber.

Description

technical field [0001] The invention relates to nanocomposite material technology, in particular to a method for using mesoporous molecular sieves in water-absorbing swellable rubber and improving the performance of water-absorbing swellable rubber. Background technique [0002] Water-Swellable Rubber (WSR) is a new type of functional polymer material, which is made by introducing hydrophilic groups or components into the rubber matrix, and can expand to its own mass or Several times or even hundreds of times the volume, and generate a large expansion pressure. [0003] Since it came out in the 1970s, it has been widely valued by its unique dual characteristics of elastic sealing and water-sealing and water-absorbing expansion, and can be widely used in civil engineering, military facilities, civil infrastructure, industrial equipment manufacturing, etc. On the one hand, water-swellable rubber has gradually replaced the traditional methods of cement grouting, potassium sodi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08L7/00C08L9/06C08L9/00C08L23/22C08L9/02C08K13/06C08K9/04C08K9/06C08K7/24C08K7/26C08K3/34C08K3/08C08K3/22
Inventor 王娜于森方庆红张秀斌王重杨凤韩文池
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com