Peroxide vapor sulfurizing process for EPDM rubber pipe

A hose peroxide and steam technology, which is applied to tubular articles, other household appliances, household appliances, etc., can solve the problems of high production cost and complex equipment, and achieve the effects of sufficient vulcanization, lower production costs, and improved appearance quality.

Inactive Publication Date: 2007-08-22
ANHUI ZHONGDING SEALING PARTS +1
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  • Abstract
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Problems solved by technology

There are reports abroad that nitrogen is used to replace air, but nitrogen replacement requires complex equipment and high production costs, and it is not currently used in China.

Method used

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  • Peroxide vapor sulfurizing process for EPDM rubber pipe
  • Peroxide vapor sulfurizing process for EPDM rubber pipe

Examples

Experimental program
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Embodiment Construction

[0014] See attached picture.

[0015] 1. Vulcanization tank, the size of the tank is Ф1500×3000. 2. Automatic exhaust air valve (thermostatic exhaust valve for steam, it is recommended to use the product of Japan TLV company). 3. The steam inlet pipe (specification DN60), the steam inlet is in the middle of the autoclave, and after entering the autoclave, a steel pipe is connected to guide the steam evenly into all parts of the autoclave. The longer the length of the steel pipe, the better. 4. Exhaust pipe (specification DN60), the exhaust pipe is installed near both ends of the vulcanization tank, and exhausts steam at the same time. 5. The control cabinet centrally collects, measures and controls parameters such as oxygen exhaust time, heating time, vulcanization time, oxygen exhaust temperature, vulcanization temperature, oxygen exhaust pressure, and vulcanization pressure. 6. Drain valve (it is recommended to use the product of Japan TLV company). The steam trap can quic...

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Abstract

The present invention discloses peroxide vapor sulfurizing process for EPDM rubber pipe, and features that after the rubber pipe is set inside the sulfurizing tank, water vapor is first filled into the tank to exhaust air before performing normal sulfurizing process. The EPDM rubber pipe through the said process has sufficient sulfurizing, no stickness surface and high performance, and is suitable for use in automobile.

Description

technical field [0001] The invention relates to a peroxide steam vulcanization process for manufacturing high-performance EPDM rubber hoses. Background technique [0002] With the rapid development of the automobile industry, the hoses used in automobiles are required to withstand temperatures above 150°C. EPDM rubber can better meet this requirement by using a peroxide vulcanization system. However, the rubber compound using peroxide curing system is easy to react with oxygen during the vulcanization process, resulting in stickiness on the surface of the hose. At present, the main method to solve this problem is the displacement air method. There are reports of using nitrogen to replace air in foreign countries, but nitrogen replacement requires complex equipment and high production costs, and it has not been used in China at present. The steam replacement method can greatly reduce the production cost. Contents of the invention [0003] The invention provides a peroxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/04B29K19/00B29L23/00
Inventor 夏鼎湖陈晋阳鲍仁德郑海波
Owner ANHUI ZHONGDING SEALING PARTS
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