Thermoplastic elastomer composition, and vibration-proof sound-proof member comprising the composition
A technology of thermoplastic elastomer and composition, applied in the direction of conveyor objects, transportation and packaging, chemical instruments and methods, etc., can solve the problems of insufficient wear resistance, insufficient processability, etc.
Inactive Publication Date: 2010-09-22
SUMITOMO RUBBER IND LTD
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Problems solved by technology
[0006] However, parts such as rollers used in image forming devices such as printers must have high precision, and the above-mentioned conventional thermoplastic elastomer compositions have insufficient processability.
In addition, as described above, high wear resistance is also required, but in Patent Document 2, for example, there is no description about wear resistance, and the wear resistance is actually insufficient.
Method used
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Embodiment Construction
[0085] Embodiments of the rubber roller elastic body composition of the present invention will be described below.
[0086] The thermoplastic elastomer composition contains:
[0087] A rubber component containing butyl-based rubber at a ratio of 30 mass % to 80 mass %, an olefin-based thermoplastic resin at 5 mass parts to 50 mass parts per 100 mass parts of the rubber component, and 100 mass parts per 100 mass parts of the rubber component. 10 parts by mass or more and 100 parts by mass or less of a hydrogenated styrene-based thermoplastic elastomer, wherein the above-mentioned rubber component is finely dispersed in a matrix component composed of a mixture of the above-mentioned olefin-based thermoplastic resin and hydrogenated styrene-based thermoplastic elastomer by dynamic crosslinking middle.
[0088] As the rubber component, butyl-based rubber and EPDM rubber are contained. As the butyl-based rubber, isobutylene-isoprene copolymer rubber is preferably used. The ratio...
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Abstract
Disclosed is a thermoplastic elastomer composition which is excellent in a vibration-proof property and a sound-proof property, and which has flexibility, wear resistance and processability at the levels required for a member (e.g., a roller) to be used in an image-forming device (e.g., a printer). The thermoplastic elastomer composition contains a butyl rubber at a ratio of 30 to 80 mass% (inclusive), and further contains 15 to 50 parts by mass (inclusive) of an olefin thermoplastic resin and 10 to 100 parts by mass (inclusive) of a hydrogenated styrene thermoplastic elastomer relative to 100 parts by mass of the rubber component, wherein the rubber component is finely dispersed by dynamic cross-linking.
Description
technical field [0001] The present invention relates to a thermoplastic elastomer composition dispersed with dynamically cross-linked rubber and a shockproof and soundproof member formed from the rubber composition, the shockproof and soundproof member being suitable for use, for example, in printing requiring removal of vibration and noise generated during paper passing Equipment parts. Background technique [0002] Rubber rollers are used in paper feed mechanisms of image forming devices such as inkjet printers, laser printers, electrostatic copiers, facsimile machines, and automatic teller machines (ATMs). Since this rubber roller needs to feed paper while taking out and separating conveyed objects such as paper or film, it is required to have excellent flexibility and high abrasion resistance. [0003] Among such rubber rollers, in recent years, Japanese Patent No. 3527467 (Patent Document 1) and the like have provided rollers using thermoplastic elastomers that are sup...
Claims
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IPC IPC(8): C08L23/22C08J3/24C08L23/00C08L23/16C08L53/02C09K3/00F16F15/08B65G39/00
CPCB41J29/08C08L53/025C08L23/16C08J3/005B41J29/10C08L23/12C08J2321/00C08L2205/03C08L23/22C08L23/02C08L2312/00B41J13/02C08L2666/02C08L2666/04
Inventor 中野宏昭奥山英之
Owner SUMITOMO RUBBER IND LTD