Metal gasket material sheet

A metal backing and material board technology, applied in the direction of metal layered products, thin material treatment, surface pretreatment bonding methods, etc., can solve the problems of toxicity, negative impact on human body, etc., and achieve the effect of excellent adhesion

Inactive Publication Date: 2005-05-18
NIPPON LEAKLESS IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, chromate treatment using chromium compounds produces industrial emissions or negative effects of hexavalent chromium on the environment and toxicity to humans.

Method used

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  • Metal gasket material sheet
  • Metal gasket material sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Below, three examples of silane-based chemical conversion coatings 3 made of different silane coupling agents, seven comparative examples using the aforementioned different conditions, and a silane-based chemical conversion coating with phosphorous chromate coating instead A reference example of layer 3 will be described. The method adopted is the cooling after the real engine temperature cycle experiment (a kind of cooling experiment), in which the metal gasket made of the corresponding material is put into the sealing area between the cylinder head and the intake pipe, and then repeated for a predetermined number of times The earth expands with heat and contracts with cold. In this way, the adhesion of each rubber layer and the sealing performance of each metal gasket after the temperature drop test can be separately obtained and compared.

[0023] In particular, in the metal backing material plate 1 of Example 1, a stainless steel plate (SUS301H) is used as the meta...

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Abstract

A sheet of metal backing material having a layer of rubber placed on the metal sheet with an adhesive layer, the sheet of metal backing material comprising a silane-based chemical conversion coating formed on the surface between the metal sheet and the adhesive layer, the coating The layers are made of silane coupling agents containing epoxy, mercapto or amino groups as functional groups. The bonding layer is made of phenolic based adhesive and the rubber layer is made of NBR rubber compound. The adhesiveness between the rubber layer and the metal plate is improved by using the adhesive layer, the rubber layer is not easily peeled off from the metal plate, and a chromium-free material plate having no adverse effects on the environment and the human body is provided.

Description

technical field [0001] This invention relates to a sheet of metal backing material, and more particularly to a sheet of laminated metal backing material having a rubber layer on the metal sheet. Background technique [0002] A gasket material sheet used around an engine mounted on a vehicle has conventionally been a laminate sheet containing asbestos fixed by nitrile rubber, phenolic resin, or the like. However, due to recent anti-asbestos regulations, a laminated metal gasket that does not use asbestos but places a rubber layer on a metal layer through an adhesive layer, such as the rubber-coated gasket of Japanese Patent Laid-Open Publication No. Hei 2-38760, has emerged. metal clad. [0003] In addition, when the gasket is used in a place where the temperature greatly changes due to repeated running and stopping of the engine, such as a gasket-embedded portion of the engine, this temperature variation causes the surface between the engine and the gasket to wear. At the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F11/00B32B7/12B32B15/06B32B27/12C08L61/00C09J5/02F16J15/08
CPCB32B7/12B32B15/06B32B27/12C08L61/00C09J5/02C09J2400/163C09J2400/166C09J2409/006C09J2461/00Y10T428/215Y10T428/273Y10T428/31696
Inventor 秋吉浩二三角宪史三津山直道村上康则桂井隆田畑胜宗岩本淳
Owner NIPPON LEAKLESS IND CO LTD
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