Unlock instant, AI-driven research and patent intelligence for your innovation.

Thermoplastic elastomer composition, composite molded body and weather strip

A thermoplastic elastomer, composite molding technology, applied in the direction of transportation and packaging, vehicle parts, etc., can solve the problem of insufficient adhesion between vulcanized rubber and thermoplastic elastomer

Inactive Publication Date: 2009-08-05
SUMITOMO CHEM CO LTD
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned thermoplastic elastomers are still insufficient in terms of adhesiveness between vulcanized rubber and thermoplastic elastomers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermoplastic elastomer composition, composite molded body and weather strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] [Production of vulcanized rubber sheets]

[0082] Ethylene-propylene-5-ethylidene-2-norbornene copolymer rubber (Sumitomo Chemical Co., Ltd. trade name "Esprene 552", Mooney viscosity (ML 1+4 125° C.) = 85, ethylene unit content = 55% by weight, 5-ethylidene-2-norbornene unit content = 4% by weight) 100 parts by weight,

[0083] Zinc oxide (Sakai Chemical Industry Co., Ltd. trade name "Zinc Oxide 2 types") 10 parts by weight,

[0084] Stearic acid (trade name "ADEKA fatty acid SA-400" manufactured by ADEKA Co., Ltd.) 3 parts by weight,

[0085] 100 parts by weight of MAF carbon (trade name "Seast 116" manufactured by Tokai Carbon Co., Ltd.) and 60 parts by weight of paraffin oil (trade name "Diana PW380" manufactured by Idemitsu Kosan Co., Ltd.) were charged into the mixer at a temperature of Melt-kneading was carried out for 5 minutes in a Banbury mixer at 70°C. Finally, the temperature in the kneader reached 160°C.

[0086] 273 parts by weight of the kneaded produ...

Embodiment 2

[0105] In addition to the use of density = 964kg / m 3, MFR (190°C, 21.18N)=5.2g / 10min (hereinafter referred to as "HDPE-2") high-density polyethylene, the rest were manufactured in the same manner as in Example 1. The results are shown in Table 1.

Embodiment 3

[0124] [Manufacture of vulcanized rubber sheet]

[0125] Except for ethylene-propylene-5-ethylene-2-norbornene-based copolymer rubber, Mooney viscosity (ML 1+4 125° C.) = 66, ethylene unit content = 65% by weight, 5-ethylidene-2-norbornene unit content = 4% by weight of ethylene-propylene-5-ethylidene-2-norbornene Copolymer rubber (trade name "Esprene 512F" manufactured by Sumitomo Chemical Co., Ltd.) was prepared in the same manner as in "Manufacture of vulcanized rubber sheet" described in Example 1 to prepare a vulcanized rubber sheet (hereinafter referred to as Vulcanized rubber sheet 2).

[0126] [Molding of composite moldings]

[0127] Fill the vulcanized rubber sheet 2 into a mold of 150 × 90 × 2 mmt, use an injection molding machine, under the conditions of a cylinder temperature of 250 ° C and a mold temperature of 50 ° C, spray it into the above mold and use the same method as in Example 1. The thermoplastic elastomer composition of the invention was used to obtai...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
thicknessaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The present invention provides a thermoplastic elastomer composition, a composite molded body and a weather strip. The thermoplastic elastomer composition comprises the following (i) and (ii): (i) a thermoplastic elastomer obtained by dynamically crosslinking (a), (b), (c) and (d) in the presence of a crosslinking agent,(a) 10 to 75% by weight of the ethylene-a-olefin copolymer rubber; (b) 10 to 50% by weight of a propylene resin; (c) 5 to 60% by weight of mineral oil; and (d) an ethylene resin; a total content of (a), (b) and (c) being 100% by weight, and a content of (d) being from 0 to 10 parts by weight, provided that the total content of (a), (b) and (C) is 100 parts by weight; (ii) a high density polyethylene; and a content of (ii) is from 55 to 150 parts by weight based on 100 parts by weight of (a) the ethylene-alpha-olefin copolymer rubber.

Description

technical field [0001] The present invention relates to a thermoplastic elastomer composition, a composite molded body and a weather strip. Background technique [0002] Ethylene, propylene, and non-conjugated diene copolymer rubber (EPDM) vulcanized as components that require rubber elasticity in automotive parts, industrial machinery parts, electrical appliances, and electronic product parts, such as weather strips, door edges, and gaskets Formed vulcanized rubber moldings. As a method of producing a molded body, for example, in the case of a molded body having a straight portion and a curved portion, a method is adopted in which after vulcanized rubber is made into a straight member by extrusion vulcanization molding, the straight member is placed in a mold, and then , Inject EPDM into the mold, perform a vulcanization treatment for several minutes to form a curved member, and then join the linear member and the curved member to form a composite molded body. [0003] Re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/10C08L57/02C08L23/04C08L23/16B60R13/04
CPCC08J5/00C08J2323/10C08J2323/16C08J2323/06C08L23/16C08L23/06C08K5/01C08L23/10C08L2666/08C08L2666/06
Inventor 夏山延博
Owner SUMITOMO CHEM CO LTD