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Rubber resin closed-cell foamed sheet and manufacturing method thereof

A manufacturing method and resin-like technology, applied in the field of rubber-like resin closed-cell foam sheets, can solve the problems of reduced sealing, reduced rebound stress, insufficient water stop, etc., and achieve excellent compression flexibility, excellent adhesion, Excellent water-stopping effect

Inactive Publication Date: 2015-07-22
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, since the above-mentioned shaped sealing material will reduce the rebound stress after a long period of use, there are problems that the sealing performance is reduced and the water-stopping performance is insufficient.

Method used

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  • Rubber resin closed-cell foamed sheet and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Utilize the pressure kneader to be made of acrylonitrile-butadiene rubber (NBR) (Japanese Zeon company trade name " Nipol 1041 ", density 1.00g / cm 3 solid, acrylonitrile content: 40.5% by weight) 100 parts by weight, azodicarbonamide (trade name "SO-L" manufactured by Otsuka Chemical Co., Ltd., decomposition temperature: 197°C) 15 parts by weight, and powdered phenolic antioxidant (Ciba Specialty Chemicals product name "IRGANOX 1010") 0.1 parts by weight of the foamable resin composition was kneaded. It should be noted that acrylonitrile-butadiene rubber at 20 ° C and 1 atmosphere (1.01 × 10 -1 MPa) is not liquid, and has rubber elasticity (rubber elasticity).

[0050] Next, after supplying this foamable resin composition to an extruder and performing melt kneading, the foamable resin composition in a molten state was extruded from the extruder at an extrusion rate of 50 kg / hour, thereby producing Foamable resin sheet.

[0051] Next, both surfaces of the above-mentio...

Embodiment 2

[0054] According to the method identical with embodiment 1, obtain apparent density 36kg / m 3 , closed-cell rate 91%, the closed-cell foam sheet of rubber-like resin with a thickness of 3.0mm, the difference is that it uses acrylonitrile-butadiene rubber (NBR) (trade name "Nipol 1042" manufactured by Japan Zeon Company, density 0.98 g / cm 3 solid, acrylonitrile content: 33.5% by weight) 100 parts by weight, azodicarbonamide (trade name "SO-L" manufactured by Otsuka Chemical Co., Ltd., decomposition temperature: 197°C) 15 parts by weight, and powdered phenolic antioxidant (Ciba Specialty Chemicals company trade name "IRGANOX 1010") 0.1 parts by weight of foamable resin composition. It should be noted that acrylonitrile-butadiene rubber at 20 ° C and 1 atmosphere (1.01 × 10 -1 MPa) is not liquid, and has rubber elasticity (rubber elasticity).

Embodiment 3

[0056] According to the method identical with embodiment 1, obtain apparent density 36kg / m 3 , closed-cell ratio 90%, the rubber resin closed-cell foam sheet of thickness 3.0mm, difference is: used by acrylonitrile-butadiene rubber (NBR) (Japanese Zeon company trade name " Nipol 1042 ", density 0.98 g / cm 3 solid, acrylonitrile component: 33.5% by weight) 100 parts by weight, liquid acrylonitrile-butadiene rubber (liquid NBR) (trade name "Nipol 1312" manufactured by Zeon Corporation in Japan), density: 0.98g / cm 3 ) 3 parts by weight, azodicarbonamide (trade name "SO-L" manufactured by Otsuka Chemicals, decomposition temperature: 197° C.) 15 parts by weight, and powdered phenolic antioxidant (trade name "IRGANOX 1010 manufactured by Ciba Specialty Chemicals Co., Ltd. ") 0.1 parts by weight of the foamable resin composition. It should be noted that acrylonitrile-butadiene rubber at 20 ° C and 1 atmosphere (1.01 × 10 -1 MPa) is not liquid, and has rubber elasticity (rubber elas...

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Abstract

The invention provides a rubber resin closed-cell foamed sheet which is not reduced in sealing property after a long time using and excellent in water sealing property. By containing nitrile rubber resin, the rubber resin closed-cell foamed sheet has excellent adhesiveness; when being used as a water sealing material, the rubber resin closed-cell foamed sheet can be adhered without gap in a tight sealing state along the interface of the sealed part. Therefore, the rubber resin closed-cell foamed sheet provided by the invention can be used as the water sealing material which is high in sealing property and excellent in water sealing property.

Description

[0001] This application is a divisional application of a patent application with the Chinese application number 200980161724.1, the title of the invention is "rubber resin closed-cell foam sheet and its manufacturing method" and the filing date is September 30, 2009. technical field [0002] The present invention relates to a rubber-like resin closed-cell foam sheet used as a waterproof sealing material and a manufacturing method thereof. Background technique [0003] Today, foams are widely used as water-tight sealing materials in various fields such as civil engineering / construction, electrical / electronic industries, and vehicles. Examples of the foam used for the water-tight sealing material include thermoplastic resin foams made of polyethylene-based resins, polypropylene-based resins, and the like, rubber foams made of synthetic rubber or natural rubber, and the like. [0004] Among the above-mentioned sealing materials, the water-stop sealing material is filled into th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08J9/10
CPCC08J9/103C08J2201/026C08J2203/04C08J2205/052C08J2309/02C08K5/1345C08L9/02C08L2203/14C08L2205/025
Inventor 俵头俊司足立浩一铃木隆雄根津宪太郎
Owner SEKISUI CHEM CO LTD