Rubber Laminate Interlayer for Olefin-to-Halogen Rubber Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
It is challenging to bond olefin-type rubber, which is non-polar or has small polarity, with a different material, and rubber containing Group 16 elements and/or Group 17 elements, as they tend to have difficulty in forming strong integrations.
Innovation Solution
A laminate structure comprising an olefin-type rubber layer, an adhesive resin layer containing silane-modified ethylene/vinyl acetate copolymer, and a layer with rubber containing Group 16 elements and/or Group 17 elements, where the adhesive resin layer facilitates strong integration between these otherwise difficult-to-bond materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If olefin-type rubber and rubber containing Group 16 elements and/or Group 17 elements are directly bonded, then manufacturing process is simplified, but bonding strength is insufficient
Solution Approach 1:
The patent introduces a polar rubber layer as an intermediary between olefin-type rubber and rubber containing Group 16 elements and/or Group 17 elements. This intermediate layer with polar groups facilitates strong bonding with both materials, resolving the contradiction by maintaining manufacturing simplicity while achieving sufficient bonding strength through the mediating polar rubber layer.
2Reliability
If fluorine rubber is used to improve heat resistance and oil resistance, then performance is enhanced, but cost increases
Solution Approach 1:
The patent applies fluorine rubber locally only in the polar rubber layer where it is most needed for bonding and resistance properties, rather than using it throughout the entire hose structure. This localized application maintains the necessary heat and oil resistance while significantly reducing overall material cost compared to using fluorine rubber for the entire hose.
3Reliability
If non-polar rubber is used for oil resistance and cost-effectiveness, then these properties are improved, but bonding difficulty with different materials increases
Solution Approach 1:
The patent uses a polar rubber layer as an intermediary that bonds to the non-polar rubber on one side and to other materials on the other side. This resolves the bonding difficulty of non-polar rubber while preserving its excellent oil resistance and cost-effectiveness properties in the final laminate structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The laminate structure effectively integrates olefin-type rubber with rubber containing Group 16 elements and/or Group 17 elements, enhancing bonding strength and suitability for applications requiring heat resistance and fatigue resistance, such as in automotive and industrial machinery.
Implementation Method 1
an adhesive resin layer containing silane-modified ethylene/vinyl acetate copolymer
Data Source
AI summary
An object of the present invention is to provide a laminate of an olefin-type rubber, which is non-polar or has a small polarity and which is difficult to bond with a different material, and a rubber including Group 16 elements and/or Group 17 elements, which is a different kind of rubber. The laminate according to the present invention includes a structure including, in order, an olefin-type rubber layer (A); an adhesive resin layer (B) containing at least one selected from the group consisting of an ethylene/vinyl acetate copolymer, a silane-modified ethylene/vinyl acetate copolymer, an ethylene/acrylic acid copolymer and an ionomer thereof, and an ethylene/methacrylic acid copolymer and an ionomer thereof; and a rubber layer (C) containing Group 16 elements and/or Group 17 elements.