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Layered rubber product

A technology of laminated body and rubber, applied in the direction of rubber layered products, layered products, synthetic resin layered products, etc., can solve the problem of insufficient bonding strength, and achieve excellent interlayer adhesion and gasoline permeation resistance. The effect of excellent transient performance and excellent ozone resistance

Inactive Publication Date: 2007-09-05
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent Document 1 proposes a fuel hose comprising a laminate of an acrylic polymer layer containing an acrylonitrile monomer unit and a fluororesin layer excellent in gasoline permeation resistance. However, the gap between the two layers of the laminate is Adhesive strength is insufficient

Method used

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Examples

Experimental program
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preparation example Construction

[0091] The preparation method of the above-mentioned mixed rubber composition is not particularly limited, and it can be prepared by a usual preparation method of a rubber composition. For example, an internal mixer and an open mill can be used to knead the above-mentioned (A) component, (B) component, Salt, cross-linking agent and any of the above-mentioned optional ingredients as required. When blending a crosslinking agent, a crosslinking accelerator, or a crosslinking aid, it is preferable to adjust the temperature below the crosslinking initiation temperature after blending, and then mix.

[0092] Fluoropolymer layer

[0093] Together with the crosslinked rubber layer formed by the crosslinked mixed rubber composition, the other layer of the fluoropolymer layer constituting the rubber laminate of the present invention is a polymer comprising preferably containing 62% by weight or more of fluorine-containing unsaturated monomer units. The layer of things.

[0094] The polymer...

Embodiment

[0112] Examples are given below to further illustrate the present invention in detail. The following "parts" and "%" are weight standards unless otherwise specified. The test and evaluation of each characteristic were performed as follows.

[0113] (1) Tensile strength, elongation, hardness

[0114] In the normal physical properties of the rubber cross-linked product, the tensile strength and elongation are obtained by punching a dumbbell-shaped No. 3 test piece after the sheet-like cross-linked product is made. The extension speed is measured at 500 mm / min.

[0115] In addition, the hardness is measured at 23° C. and 50% relative humidity in accordance with JIS K6253.

[0116] (2) Compression permanent deformation

[0117] The compression set of the rubber laminate is measured based on JIS K6262. The test conditions are 25% compression rate, 100°C, 22 hours.

[0118] (3) Static ozone test

[0119] The test piece described in Section 4.4 of JIS K6259 was extended by 40% and mainta...

reference example 1

[0122] Reference example 1 (manufacturing example of nitrile copolymer rubber a)

[0123] In a reactor with a thermometer and a stirring device, 200 parts of ion-exchange water, 0.25 parts of sodium dodecylbenzene sulfonate, 36 parts of acrylonitrile, 3 parts of n-butyl maleate and 0.5 parts of molecular weight are added in order Agent tert-dodecyl mercaptan. Next, degassing and nitrogen replacement were performed under reduced pressure, and the operation was repeated 3 times to sufficiently remove oxygen, and 61 parts of butadiene was added. The reactor was kept at 5°C, 0.1 part of cumene hydroperoxide (polymerization initiator) and 0.01 part of ferrous sulfate were added, and emulsion polymerization was carried out for 16 hours while stirring.

[0124] When the polymerization conversion rate was 85%, 0.1 part of 10% hydroquinone aqueous solution as a polymerization stopper was added to stop the polymerization reaction, and then the remaining monomer was removed using a rotary ev...

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Abstract

A rubber laminate comprised of a cross-linked rubber layer containing a carboxyl-group containing nitrile copolymer rubber (A), a carboxyl-group containing acryl-based polymer (B), and a specific phosphonium salt and a fluorine-based polymer layer. Preferably, the carboxyl-group content per 100 grams of the (A) ingredient is 210 -3 to 110 -1 equivalents and the carboxyl-group content per 100 grams of the (B) ingredient is 410 -4 to 110 -1 equivalents, the (A) ingredient and (B) ingredient are in a weight ratio of 40:60 to 90:10, and the phosphonium salt content in the cross-linked rubber layer is 0.5 to 10 parts by weight per 100 parts by weight of the total of the (A) ingredient and (B) ingredient. According to the present invention, there is provided a rubber laminate excellent in oil resistance and gasoline permeation resistance plus tensile strength, low compression set, and other mechanical characteristics, ozone resistance, and interlayer adhesion.

Description

Technical field [0001] The present invention relates to a rubber laminate including a cross-linked rubber layer containing a nitrile copolymer rubber and an acrylic polymer and a fluoropolymer layer. In detail, it relates to a rubber laminate having excellent oil resistance and ozone resistance and suitable for automobiles, etc. Rubber laminate of rubber parts. Background technique [0002] It is well known that nitrile copolymer rubbers such as acrylonitrile-butadiene rubber (NBR) are rubbers with excellent oil resistance. However, the nitrile copolymer rubber has insufficient weather resistance such as ozone resistance. Therefore, as a modified substance, a so-called polymer blend in which the ozone resistance is improved by blending a vinyl chloride resin is used. Things. However, although polymer blends are excellent in oil resistance and ozone resistance, they have a problem of environmental pollution caused by halogens when they are discarded. [0003] In order to solve thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B25/08B32B25/14C08J3/24C08L13/00
CPCB32B25/08C08K5/0091C08K5/3475C08L13/00Y10T428/3154C08L33/00C08K5/50C08L2666/04C08J3/24B32B25/14B32B2305/72B32B27/308
Inventor 小田川义幸沼田广美藤田治彦
Owner ZEON CORP
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