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Recycled ethylene propylene diene monomer/reclaimed isobutylene-isoprene rubber (REPDM/RIIR) elastomer and preparation method thereof

A technology of elastomer and preparation steps, applied in the field of REPDM/RIIR elastomer and its preparation, achieving the effect of simple preparation method

Inactive Publication Date: 2013-12-18
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report about the introduction of REPDM / RIIR waterproof materials in the literature patents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In the present embodiment, the vulcanization system adopted is composed of sulfur, BZ, and M, and the vulcanization activator is zinc oxide and stearic acid used together. The specific formula: 80 parts of REPDM, 20 parts of RIIR, 1.5 parts of BZ, 0.5 part of DM, oxidation 5 parts of zinc, 3 parts of stearic acid, 1.5 parts of sulfur.

[0020] The REPDM / RIIR elastomer described in this embodiment, its preparation steps:

[0021] a. First pass REPDM and RIIR on the mill for several times to mix them evenly, then add zinc oxide and stearic acid, add accelerator after mixing evenly, and finally add sulfur; then pack the mixed rubber 10 times, mix Discharge evenly and store for 24 hours for use;

[0022] b. Return the film that has been parked for 24 hours and reload it for later use;

[0023] c. Put the remixed rubber in step b on a flat vulcanizer for vulcanization, the temperature is controlled at 160°C, and the t is measured with a rubber rotorless vulcanizer during v...

Embodiment 2

[0026] The difference between this example and Example 1 is that the type of accelerator is changed, and the specific formula is: 80 parts of REPDM, 20 parts of RIIR, 1.5 parts of BZ, 0.5 parts of M, 5 parts of zinc oxide, 3 parts of stearic acid, and 1.5 parts of sulfur share. The mechanical property test results of the REPDM / RIIR elastomer described in this example are shown in Table 2.

Embodiment 3

[0028] The difference between this example and Example 1 is that the type of accelerator has been changed. The specific formula: 80 parts of REPDM, 20 parts of RIIR, 1.5 parts of PZ, 0.5 parts of DM, 5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of sulfur share. The mechanical property test results of the REPDM / RIIR elastomer described in this example are shown in Table 2.

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Abstract

The invention discloses a recycled ethylene propylene diene monomer / reclaimed isobutylene-isoprene rubber (REPDM / RIIR) elastomer and a preparation method thereof, and relates to an elastomer material and the preparation method thereof. The waterproof material is prepared from the following components in parts by mass: 100 parts of combined REPDM and RIIR, 1-2 parts of brimstone, 0.9-2 parts of accelerant, 2.5-8 parts of vulcanizing activator, and 0-20 parts of carbon black. The material has good process compatibility by combination of the EPDM and the IIR; better combination property can be obtained. Blend rubber can be vulcanized by the brimstone, peroxide, esters and resin; the vulcanization rates of the brimstone, the peroxide, the esters and the resin are approximate; a co-vulcanization material is easily formed. According to the REPDM / RIIR elastomer, the EPDM and the IIR are completely replaced by the REPDM and the RIIR; the cost of the waterproof material is reduced by matching with a fortifier and a vulcanizing agent; the waterproof material is easily formed; the adhesiveness between the waterproof material and a matrix is improved. An experiment research proves that the REPDM / RIIR waterproof material with excellent ozone resistance, weather fastness, low temperature resistance, resistance to chemical mediator and hot air aging resistance is prepared.

Description

technical field [0001] The invention relates to an elastomer material and a preparation method thereof, in particular to a REPDM / RIIR elastomer and a preparation method thereof. Background technique [0002] The disposal of waste rubber is one of the serious problems facing society today. In order to meet the ever-increasing material performance requirements, rubber is gradually developing towards high strength, wear resistance, stability and aging resistance. However, the discarded rubber cannot be degraded naturally for a long time, resulting in more difficult to handle than plastic pollution (white pollution). black pollution, wasting precious rubber resources. Building leakage has always been a difficult problem in my country's construction industry. At present, the leakage rate of houses in our country is very high, mainly due to the low grade and poor quality of waterproof materials. Therefore, there is a great demand for high-performance waterproof materials in...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/22C08K13/02C08K3/06C08K3/04C08K5/47C08K5/39C08K5/40C08K5/09C08K3/22
Inventor 王重宫小曼于丽郭翠翠陈慧胡嘉文
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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