RIIR/REPDM elastomer and preparation method thereof
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An elastomer and elastic technology, applied in the field of recycled rubber and its preparation, to achieve the effect of simple preparation method
Inactive Publication Date: 2014-04-09
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Abstract
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Problems solved by technology
However, there is no report about the introduction of RIIR / REPDM waterproof materials in the literature and patents.
Method used
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Effect test
Embodiment 1
[0022] In this example, the vulcanization system used is composed of sulfur, TMTD, and DM. The vulcanization activator is zinc oxide and stearic acid. The specific formula is: 90 parts of RIIR, 10 parts of REPDM, 1.5 parts of TMTD, 0.5 parts of DM, zinc oxide 5 parts, 3 parts stearic acid, 1.5 parts sulfur.
[0023] The RIIR / REPDM elastomer described in this embodiment, its preparation steps:
[0024] a. First pass RIIR and REPDM 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;
[0025] b. Return the film that has been parked for 24 hours and reload it for later use;
[0026] 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 vulcanization. 10 and t 90 ,M L a...
Embodiment 2
[0029] The difference between this example and Example 1 is that the type of accelerator has been changed, and the specific formula is: 90 parts of RIIR, 10 parts of REPDM, 1.5 parts of TMTD, 0.5 parts of M, 5 parts of zinc oxide, 3 parts of stearic acid, and 1.5 parts of sulfur . Table 2 shows the mechanical property test results of the RIIR / REPDM elastomer described in this example.
Embodiment 3
[0031] The difference between this embodiment and Example 1 is that the kind of accelerator has been changed, specific formula: 90 parts of RIIR, 10 parts of REPDM, 1.5 parts of BZ, 0.5 part of DM, 5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of sulfur . Table 2 shows the mechanical property test results of the RIIR / REPDM elastomer described in this example.
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Abstract
The invention relates to recycled butyl rubber and a preparation method thereof and especially relates to an RIIR/REPDM elastomer and a preparation method thereof. The RIIR/REPDM elastomer comprises 100 parts of RIIR and REPDM as waterproof materials, 1-2 parts of sulfur, 0.9-2 parts of a promoter, 2.5-8 parts of a vulcanization activator and 0-20 parts of carbon black. RIIR and REPDM have good technical compatibility. Through use of REPDM in RIIR, good integrated performances are obtained and RIIR machining performances are improved. The RIIR and REPDM used simultaneously can adopt the same vulcanization system, have similar vulcanization rates and easily form a co-vulcanization material. The preparation method utilizes RIIR and REPDM to completely replace EPDM and IIR, reduces a waterproof material cost and improves adhesion of the waterproof material and a base. The RIIR/REPDM waterproof material obtained by the preparation method has excellent performances of ozone resistance, weatherability, low temperature resistance, chemical medium resistance and hot air ageing resistance.
Description
technical field [0001] The invention relates to a regenerated rubber and a preparation method thereof, in particular to a RIIR / REPDM elastomer and a preparation method thereof. Background technique [0002] Leakage in buildings has always been a major 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 and the prevalence of counterfeit products. Therefore, there is a great demand for high-performance waterproof materials in our country, but it is difficult to popularize high-performance waterproof materials in the construction industry due to cost problems. In recent years, with the rapid development of my country's automobile industry, the output of RIIR has also increased. RIIR has the characteristics of heat resistance, aging resistance and water resistance. In order to avoid wasting precious rubber resources, it becomes especially importan...
Claims
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Application Information
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