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Gasket manufacturing method, gasket material for molded gasket, and heat exchanger

A manufacturing method and technology of heat exchangers, applied in heat exchanger sealing devices, heat exchange equipment, heat exchanger shells, etc. Problems such as insufficient bonding strength with the box

Active Publication Date: 2019-06-28
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After storing the two liquid materials separately for a long period of time, when the gasket is made of a mixture of these two liquid materials, the bond strength of the gasket to the tank made of resin decreases
In particular, if the case is made of a resin that is difficult to bond to silicone rubber, the bond strength between the gasket and the case may be insufficient and may cause the bond between the spacer and the case to fail

Method used

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  • Gasket manufacturing method, gasket material for molded gasket, and heat exchanger
  • Gasket manufacturing method, gasket material for molded gasket, and heat exchanger
  • Gasket manufacturing method, gasket material for molded gasket, and heat exchanger

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Embodiment Construction

[0024] Hereinafter, embodiments and modifications of the present disclosure will be described with reference to the drawings.

[0025] In this embodiment, the heat exchanger is a radiator in which cooling fluid that cools a heat generator such as an engine used to drive a vehicle dissipates heat, and the gasket material for the heat exchanger is used in the radiator middle.

[0026] like figure 1 As shown, coolant as a cooling fluid exchanges heat with air in the radiator 100 . The radiator 100 has a pipe 111 in which coolant flows and a header tank 120 . The water collecting tank 120 is located at both ends of the pipe 111 in a longitudinal direction of the pipe 111 and extends in a direction perpendicular to the longitudinal direction. The water collection tank 120 communicates with the pipe 111 .

[0027] The tubes 111 are arranged parallel to each other, and the longitudinal direction of the tubes 111 is the same as figure 1 Up and down in the same direction. A fin h...

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PUM

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Abstract

A method of manufacturing a gasket (126) bonded to a resin member (125), the manufacturing method comprising the steps of: mixing a plurality of liquid materials stored separately; and molding a gasket made of the mixture of the plurality of liquid materials. into gaskets. The mixture constitutes a liquid silicone rubber composition, and the liquid silicone rubber composition includes a base resin, a crosslinking agent, a curing catalyst, a hydrophilic silica filler, and a silane coupling agent. The hydrophilic silica filler and the silane coupling agent are contained in different liquid materials before the plurality of liquid materials are mixed.

Description

technical field [0001] The present disclosure relates to a method of manufacturing a gasket, a gasket material for molding a gasket for a heat exchanger, and a heat exchanger having the same. Background technique [0002] Typically, a heat exchanger such as a radiator has tubes and a header tank communicating with the tubes. The water collecting tank has a tank body made of resin and a core plate made of metal, and the tank body and the core plate are connected. Gaskets are bonded to the case to seal the gap between the case and the core. [0003] The gasket is made of a gasket material constituting a liquid silicone rubber composition, and is molded by injection molding with the bonding portion between the case and the gasket placed in a mold. The silicone rubber component contains a base resin, a crosslinking agent, a curing catalyst, a silane coupling agent as an adhesion promoter, and a silica filler (for example, see JP 2013-032901 A). [0004] Generally, it is known...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08K3/36C08J3/24F28F11/02
CPCC08L83/04F16J15/102F16J15/14F28F9/0226B29D99/0085F16J15/108C08G77/12C08G77/20F28F2230/00B29K2083/005C08K3/36C08K5/5419C08K5/56C08L83/00B29C45/0001B29C65/48B29K2019/00B29L2031/265C08L43/04C08L2205/025C08L2205/03
Inventor 冈本真一山崎周平
Owner DENSO CORP