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High-expansion-rate water-absorbing rubber suitable for continuous extrusion vulcanization and preparation method thereof

A high expansion rate, rubber technology, applied in the field of new sealing materials, can solve the problems of unstable appearance, dimension quality, low expansion rate, etc., achieve the effects of improving production efficiency and product quality stability, fast water absorption, and reducing processing costs

Inactive Publication Date: 2020-09-08
铁科腾跃科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization and its preparation method, so as to solve the problems of unstable appearance, size and quality of existing products and low expansion rate of water-absorbing rubber materials after repeated immersion in water , to further increase the expansion rate of water-absorbent rubber materials after repeated immersion in water

Method used

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  • High-expansion-rate water-absorbing rubber suitable for continuous extrusion vulcanization and preparation method thereof

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preparation example Construction

[0025] The invention provides a high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization and a preparation method thereof, comprising the following components in parts by weight: 70-150 parts of natural rubber, 10-100 parts of water-absorbing resin, and 20-100 parts of reinforcing system parts, active agent 3-15 parts, coupling agent 0-5 parts, surface treatment agent 3-10 parts, tackifier 0-5 parts, anti-aging agent 0.5-5 parts, vulcanizing agent 0.3-1 parts, accelerator 0.5-1.5 parts.

[0026] Among them, the water-absorbing resin is polyacrylate, the reinforcing system is 20-50 parts of white carbon black, 0-25 parts of Saabofil, 0-25 parts of Caesarite, 3-10 parts of zinc oxide, 0.5 parts of stearic acid -5 parts, the coupling agent is SI69, the surface treatment agent is sodium dodecylbenzenesulfonate, the tackifier is petroleum resin C5, the anti-aging agent is protective wax 6540.5-2.5 parts, MB0-2.5 parts, the vulcanizing agent is sulfur ,...

Embodiment 1

[0037] A high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization, comprising the following components in parts by weight:

[0038] 70 parts of natural rubber, 50 parts of polyacrylate, 50 parts of white carbon black, 0 parts of Saabfei, 10 parts of Caesarte, 2.5 parts of zinc oxide, 3 parts of stearic acid, SI690 parts, sodium dodecylbenzenesulfonate 3 parts 55 parts of petroleum resin, 6540.5 parts of protective wax, 0 parts of MB, 1.0 parts of sulfur, 1.0 parts of DM, and 0.4 parts of TT.

[0039] The preparation method of the high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization includes two stages of mixing and extrusion vulcanization, and specifically includes the following steps:

[0040] S1. Preparation of plasticized rubber: put the natural rubber into an internal mixer for plasticating, and prepare the plasticized rubber when the temperature reaches 140° C., and discharge the rubber for later use.

[0041]...

Embodiment 2

[0045] A high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization, comprising the following components in parts by weight:

[0046] 100 parts of natural rubber, 10 parts of polyacrylate, 30 parts of white carbon black, 20 parts of Saabfei, 0 parts of Caesarte, 8 parts of zinc oxide, 0.5 parts of stearic acid, SI693 parts, sodium dodecylbenzenesulfonate 8 parts 53 parts of petroleum resin, 6541 parts of protective wax, 2.5 parts of MB, 0.3 parts of sulfur, 0.8 parts of DM, and 0.5 parts of TT.

[0047] The preparation method of the high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization includes two stages of mixing and extrusion vulcanization, and specifically includes the following steps:

[0048] S1. Preparation of plasticized rubber: put the natural rubber into an internal mixer for plasticating, and prepare the plasticized rubber when the temperature reaches 140° C., and discharge the rubber for later use.

[0049...

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Abstract

The invention discloses high-expansion-rate water-absorbing rubber suitable for continuous extrusion vulcanization and a preparation method thereof. The rubber comprises the following components in parts by weight: 70-150 parts of natural rubber, 10-100 parts of water-absorbent resin, 20-100 parts of a reinforcing system, 3-15 parts of an active agent, 0-5 parts of a coupling agent, 3-10 parts ofa surface treating agent, 0-5 parts of a tackifier, 0.5-5 parts of an anti-aging agent, 0.3-1 part of a vulcanizing agent and 0.5-1.5 parts of an accelerant. The preparation method comprises the following steps: preparing plasticated rubber, preparing mixed rubber, preparing mixed rubber strips and extruding a rubber material. The water-absorbing rubber material has excellent elasticity, extensibility and expansion watertightness, and the preparation process of the water-absorbing rubber material comprises two stages of mixing and extrusion vulcanization, so that the production efficiency andthe product quality stability of the water-absorbing rubber material are improved, the processing cost is reduced, and the market competitiveness is improved.

Description

technical field [0001] The invention relates to the technical field of new sealing materials, and more specifically relates to a high-expansion water-absorbing rubber suitable for continuous extrusion vulcanization and a preparation method thereof. Background technique [0002] Water-absorbing rubber material is a new type of functional sealing and waterproofing material, which is mainly used in tunnels, water conservancy and other fields that require sealing and waterproofing. At present, most of the water-absorbing rubber materials on the market have the problems of slow water absorption, low tensile strength, small water expansion rate, low expansion rate and tensile strength after repeated immersion in water; and the existing commercially available products have poor appearance, Molded products have shortcomings such as uneven quality, joint marks at joints, and poor dimensional stability. [0003] Water-absorbent rubber materials are used in dams to seal and stop water...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L33/02C08L57/02C08L91/06C08K13/04C08K7/26C08K3/22C08K5/09C08K5/42B29B7/74B29C48/91
CPCC08L7/00B29B7/7461B29C48/91C08K2003/2296C08L2205/035C08L33/02C08L57/02C08L91/06C08K13/04C08K7/26C08K3/22C08K5/09C08K5/42
Inventor 张勇赵东阳周尧李郡耿月张鹏瑶杨富民
Owner 铁科腾跃科技有限公司