Sealant material composition and pneumatic tire

A material composition and pneumatic tire technology, which can be applied to the reinforcement layer of pneumatic tires, special tires, tire parts, etc., and can solve problems such as adverse effects on driving performance such as handling stability and reduced sealing performance

Pending Publication Date: 2020-10-30
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the aforementioned self-sealing pneumatic tire, when the viscosity of the sealant is lowered, the sealant easily flows into the through hole, so the sealing performance is improved. As a result, the flow on the center side may adversely affect driving performance such as handling stability
On the other hand, when the viscosity of the sealant is increased in order to prevent the flow of the sealant, the sealing performance is reduced

Method used

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  • Sealant material composition and pneumatic tire
  • Sealant material composition and pneumatic tire
  • Sealant material composition and pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] Made in tire size 215 / 60R16, with figure 1 In the shown basic structure, in a pneumatic tire having a sealant layer made of a sealant on the tire radial inner side of the inner liner at the tread portion, the composition of the sealant material composition constituting the sealant layer, the sealant material The order of kneading the components of the composition, the amount of the rubber component to be charged in advance, the thickness of the sealant layer in the pneumatic tire, and the distance from the center of the sealant layer to the tire equator were adjusted as shown in Tables 1 to 6. Tires of Comparative Examples 1-9 and Examples 1-45.

[0051] Also, in either case, the inner liner is composed of halobutyl rubber. The column of "kneading procedure" of Tables 1 to 6 shows which of the two kinds of kneading procedures (A to C) shown in Table 7 is used.

[0052] For these test tires, the following test methods were used to evaluate the sealing performance, the fl...

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Abstract

Provided is a sealant material composition that makes it possible to ensure favorable sealing properties and suppress travel-associated flowage of a sealant. A sealant material composition that is forforming a sealant layer on a tire inside surface of a pneumatic tire. The sealant material composition includes, per 100 parts by mass of a butyl rubber, 0.1-20 parts by mass of a crosslinking agent,0.1-40 parts by mass of an organic peroxide, and 10-400 parts by mass of a liquid polymer.

Description

technical field [0001] The present invention relates to a sealant material composition constituting a sealant layer of a self-sealing pneumatic tire having a sealant layer on the inner surface of the tire, and a pneumatic tire using the sealant material composition. Background technique [0002] In pneumatic tires, it has been proposed to provide a sealant layer on the tire radial inner side of the inner liner at the tread portion (for example, refer to Patent Document 1). In such a pneumatic tire, when a foreign object such as a nail gets stuck in the tread portion, the sealant flows into the through hole, thereby suppressing a decrease in air pressure and maintaining running. [0003] In the aforementioned self-sealing pneumatic tire, when the viscosity of the sealant is lowered, the sealant easily flows into the through hole, so the sealing performance is improved. The flow on the center side may, as a result, adversely affect running performance such as steering stabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10B60C19/12
CPCB60C19/122B60C9/28C08L7/00B29D2030/0694B29D30/0685C08L23/22C08L9/00C08J3/20C08J2407/00C08J2309/00C08J2409/00C08L21/00B29C73/163B29C73/22C08K3/04C08K5/14C08K5/0025B60C1/0041C08K3/06C08K5/40C08K11/005C08L23/283
Inventor 高桥清人
Owner THE YOKOHAMA RUBBER CO LTD
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