Composite sealing material and manufacturing method thereof

A composite sealing and mixture technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as difficult sealing requirements, high sealing specific pressure, poor creep and relaxation resistance, etc., and achieve good long-term pressure-resistant sealing performance, low compression set performance, and the effect of excellent compression rebound performance

Inactive Publication Date: 2010-06-23
上海骏焱化工材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These sealing materials have certain advantages and disadvantages. For example, rubber sealing materials and polytetrafluoroethylene materials have good sealing effects, but have poor creep and relaxation resistance, poor long-term sealing effect and service life; flexible graphite sealing effects and creep resistance The relaxation effect is better, but it has certain pollution to the medium and equipment, and it is inconvenient to process and install; the existing metal-non-metallic gaskets generally have better sealing effect and service life, but require higher sealing specific pressure, it is difficult to apply to the sealing requirements of motor vehicles, equipment, fiberglass or plastic devices and pipelines

Method used

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  • Composite sealing material and manufacturing method thereof
  • Composite sealing material and manufacturing method thereof
  • Composite sealing material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] After the 0.25mm thick carbon steel plate is sandblasted, a layer of isocyanate solution is uniformly coated on the surface and dried for use. Configure the following materials according to the weight ratio: nitrile rubber: 60, carbon black: 12.5, calcium carbonate: 7, talcum powder: 6, magnesium oxide: 3, barium sulfate: 4, sulfur: 0.1, anti-aging agent D: 0.2, DBP: 1.7, accelerator CZ: 0.15, accelerator TT: 0.15, zinc oxide: 1.0, stearic acid: 0.7, foaming agent H: 3.5. After masticating nitrile rubber with an open mill, press sulfur, carbon black, calcium carbonate, talcum powder, magnesium oxide, DBP, zinc oxide, stearic acid, anti-aging agent D, accelerator CZ, accelerator TT, foaming agent Add rubber in the order of H for mixing, take the mixed rubber material and form a sheet with a certain thickness of 2mm. Dissolve the plate with toluene to form glue, and evenly coat the glue on the surface of the treated steel plate, dry it, and then vulcanize it in an oven a...

Embodiment 2

[0033] Configure materials according to the following weight ratio: nitrile rubber: 50, neoprene: 20, carbon black: 14, calcium carbonate: 7, sulfur: 0.1, antioxidant D: 0.2, DBP: 1.7, accelerator CZ: 0.15, accelerator Agent TT: 0.15, zinc oxide: 1.0, magnesium oxide: 1, stearic acid: 0.7, foaming agent H: 4. Prepare the mixed rubber as described in Example 1, use a calender to evenly coat the rubber on the surface of the steel plate that has been treated as described in Example 1, and vulcanize according to the method in Example 1 to obtain the sealing plate of the present invention.

Embodiment 3

[0035] The compounded rubber material prepared in Example 2 was evenly coated on the surface of the stainless steel plate treated with KH550 coupling agent, and the rest of the process was as in Example 2 to obtain the sealing plate of the present invention.

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Abstract

The invention discloses a novel sealing material, which consists of a core plate and elastic membrane layers compounded on two sides of the core plate, wherein the core plate a metal or non-metal core plate after surface treatment; the elastic membrane layers are prepared from elastic foaming materials or non-foaming materials which are compounded on the surfaces of the core plate in a mechanical or chemical mode to form the membrane layers. The sealing material has the advantages of simple structure, excellent compression resilience, wonderful long-term pressurization sealability, very low creep relaxation performance, long service life and wonderful conformability with a sealing surface.

Description

technical field [0001] The patent of the present invention relates to a sealing material and its manufacturing method, in particular to a sealing material made of composite non-metallic material and metal or non-metal and its manufacturing method. Background technique [0002] In various mechanical, chemical, metallurgical, transportation and pharmaceutical devices and equipment, in order to prevent the leakage of liquid or gas and other media, it is necessary to provide seals at the connection of equipment or pipelines to ensure that the connection is leak-free. For this reason, various materials are generally used as sealing elements, commonly used include various rubber sealing materials, flexible graphite materials, polytetrafluoroethylene materials and various metal-non-metal composite materials. These sealing materials have certain advantages and disadvantages. For example, rubber sealing materials and polytetrafluoroethylene materials have good sealing effects, but ha...

Claims

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Application Information

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IPC IPC(8): C09K3/10B29C70/68B29C71/00
Inventor 谢苏江许英
Owner 上海骏焱化工材料有限公司
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