Renewable bundled and crosslinked rubber material

A cross-linked rubber and rubber technology, which is applied in the field of bundled and cross-linked rubber materials, can solve problems such as weak force, limited rubber type, low cross-linking efficiency, and restrictions on the application of coordination cross-linked rubber, and achieve recycling The effect of reuse, simple formula and environmental protection

Active Publication Date: 2012-07-04
SHENZHEN XUJING LIBO ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The force of these non-covalent cross-linking bonds is relatively weak, and the mechanical properties, heat resistance and solvent stability of the cross-linked rubber are often poor.
[0004] The patent "ZL 200410025013.0" reported the use of metal ions in transition metal salts to coordinate with the polar nitrile group in nitrile rubber to form coordination crosslinked rubber, but due to the limitations of rubber species and low crosslinking efficiency , restricting the application of coordination cross-linked rubber

Method used

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  • Renewable bundled and crosslinked rubber material
  • Renewable bundled and crosslinked rubber material

Examples

Experimental program
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Effect test

Embodiment 1

[0023] 100 parts of butadiene rubber, 18 parts of succinic acid, 9 parts of calcium oxide, mixed evenly on a double-roll mill or internal mixer at 45°C, and then hot-pressed on a flat vulcanizer at 200°C, 10Mpa for 30 minutes, A bundled cross-linked rubber material can be obtained. The bundled cross-linked rubber material has a tensile strength of 6MPa, a fracture growth rate of 550%, and a hardness (Shore A) of 45. After being placed at 150°C for 48 hours, the tensile strength retention rate of the material is 95%.

Embodiment 2

[0025] 100 parts of butadiene rubber, 18 parts of succinic acid, 9 parts of calcium oxide, and 50 parts of carbon black, mixed evenly on a double-roll mill or internal mixer at 45°C, and then heated on a flat vulcanizer at 200°C and 10Mpa After hot pressing for 30 minutes, a bundled cross-linked rubber material can be obtained. The bundled cross-linked rubber material has a tensile strength of 15MPa, a fracture growth rate of 400%, and a hardness (Shore A) of 60. After being placed at 150°C for 48 hours, the tensile strength retention rate of the material is 95%.

Embodiment 3

[0027] 100 parts of butadiene rubber, 30 parts of maleic acid, 15 parts of calcium oxide, 50 parts of carbon black, mixed evenly on a double-roll mill or internal mixer at 45°C, and then heated on a flat vulcanizer at 180°C and 10Mpa After hot pressing for 15 minutes, a bundled cross-linked rubber material can be obtained. The bundled cross-linked rubber material has a tensile strength of 30MPa, a fracture growth rate of 350%, and a hardness (Shore A) of 70. After being placed at 150°C for 48 hours, the tensile strength retention rate of the material is 95%.

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Abstract

The invention discloses a renewable bundled and crosslinked rubber material. The renewable bundled and crosslinked rubber material is in a three-dimensional net structure which is formed by bundling and crosslinking of rubber molecules formed by dehydration of dicarboxylic acid, and consists of the following components in percent by weight: 5wt%-30wt% of acid anhydride and 70wt%-95wt% of saturated or unsaturated rubber diad components. The renewable bundled and crosslinked rubber material comprises the main components in parts by mass: 100 parts of rubber, 5-40 parts of dicarboxylic acid and 2.5-20 parts of dehydrating agent; and all the components are mixed for 10 minutes at the temperature of 40-55 DEG C, and are molded for 5-60 minutes at the temperature of 150-200 DEG C. According to the renewable bundled and crosslinked rubber material, in a mixed solvent of water and an organic solvent, the ring acid anhydride opens the ring to form acid, the acid anhydride component is removed by extraction to obtain pure rubber components, so that the recycling of the rubber material is realized.

Description

technical field [0001] The invention relates to a renewable binding and cross-linking rubber material, in particular to a rubber material in which dicarboxylic acid is dehydrated into a ring by using a dehydrating agent in a rubber matrix to realize binding and cross-linking. Background technique [0002] The rubber molecules obtain a three-dimensional network structure through cross-linking, so that the material can obtain good physical and chemical properties. The traditional cross-linking method is covalent cross-linking, but due to the high energy of covalent bonds, the rubber formed by cross-linking is difficult to recycle, which restricts the application of rubber materials. Therefore, the study of new environmentally friendly cross-linking methods has become a global urgent problem. [0003] Today, with the increasing awareness of environmental protection, the non-covalent cross-linked network structure has physical or chemical reversibility, which can greatly improv...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08K5/092C08K3/22C08K3/04C08J3/24C08J11/14
CPCY02W30/62
Inventor 钱庆荣卓倩曹长林陈荣国黄宝铨肖荔人许兢刘欣萍陈庆华杨文卿
Owner SHENZHEN XUJING LIBO ENVIRONMENTAL PROTECTION TECH
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