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High-performance water-swellable rubber

A water-swelling rubber, high-performance technology, applied in the rubber field, can solve the problems of difficult dispersion of water-absorbing resin, unstable performance and high production cost, achieve good compatibility, low production cost, and meet the effect of production process

Inactive Publication Date: 2014-02-19
ANHUI IND & TRADE VOCATIONAL TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the existing water-swellable rubber has the defects of unstable performance, difficulty in dispersing water-absorbent resin in rubber, and high production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A high-performance water-swellable rubber, the parts by weight of each component are:

[0041] Rubber (1:1 natural rubber and butadiene rubber) 120 parts,

[0042] 35 parts of water-absorbent resin,

[0043] Zinc oxide 6 parts,

[0044] 1.6 parts of stearic acid,

[0045] Anti-aging agent 2.0 parts,

[0046] Aromatic oil 5 parts,

[0047] 4 parts tackifying resin,

[0048] Spray carbon black 10 parts,

[0049] 30 parts of bentonite,

[0050] Organic peroxide (dicumyl peroxide) 2 parts,

[0051] 1 part sulfur,

[0052] Accelerator 1.5 parts.

[0053] The preparation process is as follows:

[0054] Adjust the roller distance of the double-roll mill to 0.5mm, masticate the natural rubber, make a triangular bag, ten times; then blend the butadiene rubber and natural rubber together, make a triangular bag, five times; then adjust the roller distance to 1mm, and then add zinc oxide, stearic acid, anti-aging agent 4020, spray carbon black, bentonite, aromatic hydroc...

Embodiment 2

[0065] A high-performance water-swellable rubber, the parts by weight of each component are:

[0066] Rubber (1:1 natural rubber, EPDM rubber) 120 parts,

[0067] 35 parts of water-absorbent resin,

[0068] Zinc oxide 6 parts,

[0069] 1.6 parts of stearic acid,

[0070] Anti-aging agent 2.0 parts,

[0071] Aromatic oil 5 parts,

[0072] 4 parts tackifying resin,

[0073] Spray carbon black 10 parts,

[0074] 30 parts of bentonite,

[0075] 2 parts organic peroxide,

[0076] 1 part sulfur,

[0077] Accelerator 1.5 parts.

[0078] The preparation process is as follows:

[0079] Adjust the roller distance of the double-roller mill to 0.5mm, masticate natural rubber, and make triangular bags, ten times; then blend EPDM rubber and natural rubber together, make triangular bags, five times; then adjust the roll When the distance is 1mm, add zinc oxide, stearic acid, anti-aging agent 4020, spray carbon black, bentonite, aromatic hydrocarbon oil and tackifying resin in two ...

Embodiment 3

[0081] A high-performance water-swellable rubber, the parts by weight of each component are:

[0082] Rubber (1:1 natural rubber and butadiene rubber) 120 parts,

[0083] 35 parts of water-absorbent resin,

[0084] Zinc oxide 6 parts,

[0085] 1.6 parts of stearic acid,

[0086] Anti-aging agent 2.0 parts,

[0087] Aromatic oil 5 parts,

[0088] 4 parts tackifying resin,

[0089] Spray carbon black 10 parts,

[0090] 30 parts of bentonite,

[0091] Organic peroxide (2,5-dimethyl-2,5-di-tert-butylperoxyhexane) 2 parts,

[0092] 1 part sulfur,

[0093] Accelerator 1.5 parts.

[0094] The preparation process is as follows:

[0095] Adjust the roller distance of the double-roll mill to 0.5mm, masticate the natural rubber, make a triangular bag, ten times; then blend the butadiene rubber and natural rubber together, make a triangular bag, five times; then adjust the roller distance to 1mm, then add zinc oxide, stearic acid, anti-aging agent 4020, spray carbon black, benton...

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Abstract

The invention discloses a high-performance water-swellable rubber which comprises the following components in parts by weight: 100-150 parts of rubber, 30-40 parts of water-absorbing resin, 5-7 parts of zinc oxide, 1-2 parts of stearic acid, 1.5-2.5 parts of anti-aging agent, 4-6 parts of aromatic oil, 3-5 parts of tackifying resin, 8-12 parts of spray carbon black, 25-35 parts of bentonite, 1.5-2.5 parts of organic peroxide, 0.8-1.5 parts of sulfur and 0.8-1.8 parts of accelerator. The water-swellable rubber has the advantages of stable performance, favorable compatibility between the water-absorbing resin and rubber, small expansion ratio change after repeated water absorption, favorable working properties and low production cost, and can satisfy the requirements for simple production technique and low production cost.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a high-performance water-absorbing swelling rubber. Background technique [0002] Water Swelling Rubber (WSR) is a new type of functional polymer material developed by Japan in the late 1970s. In 1976, Japan Asahi Electric Chemical Co., Ltd. applied for the invention patent of water-swellable rubber for the first time. WSR is made by introducing hydrophilic groups or components into traditional elastic matrices (such as rubber and thermoplastic elastomers). The product can expand to several times or even hundreds of times its own mass or volume after absorbing water. It can adapt to structural deformation and generate greater expansion pressure. While maintaining the elasticity and strength of the matrix, it also has the ability to retain and stop water. Water-swellable rubber, as a new type of functional material, has been widely used in tunnels, subways, culverts, ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L23/16C08L101/12C08K13/02C08K3/22C08K3/04C08K5/09C08K5/14C08K3/06
Inventor 王小燕
Owner ANHUI IND & TRADE VOCATIONAL TECHN COLLEGE
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