Rubber composition for tire treads
A rubber composition, tire tread technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of low heat generation, improved wet performance, small reinforcement, etc., to reduce rolling resistance and improve wetlands. performance, the effect of increasing dispersibility
Inactive Publication Date: 2014-12-17
THE YOKOHAMA RUBBER CO LTD
View PDF5 Cites 19 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the lack of affinity between silica and diene rubber tends to cause poor dispersion, especially when the particle size of silica is reduced, the dispersibility deteriorates, so that low heat generation and improved wet performance cannot be sufficiently obtained. Effect
In addition, compared with carbon black, the reinforcement is small, and the wear resistance may not be sufficiently ensured.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0112] Combine components other than sulfur and vulcanization accelerators with Figure 4 Mix the common compounding ingredients shown together in a 1.8L closed mixer at 160°C for 5 minutes, add sulfur and a vulcanization accelerator to the released masterbatch, and knead with an open roll. This preparation contains Figure 1~3The 38 types of rubber compositions for tire treads (Examples 1 to 20 and Comparative Examples 1 to 18) were compounded as shown. It should be stated that in Figure 1~3 In , for SBR containing oil-spread oil, the compounding amount of each rubber component by net weight is described in parentheses. The total of the filler is described as the total of silica and carbon black (parts by weight), the ratio of silica in the filler is described as the content of silica in 100% by weight of the filler (weight %), and the silica The ratio of Silica 1 in Silica 1 is described as the content (weight %) of Silica 1 in 100% by weight of all silica, and the compo...
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
| Property | Measurement | Unit |
|---|---|---|
| softening point | aaaaa | aaaaa |
| adsorption capacity | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Login to View More
Abstract
Provided is a rubber composition for tire treads, which is configured to improve low rolling resistance, wet performance and wear resistance to levels higher than those of conventional ones. The rubber composition for tire treads is obtained by blending 3-60 parts by weight of an aromatic modified terpene resin and 100-150 parts by weight of a filler per 100 parts by weight of a diene rubber that contains 35-89% by weight of a modified conjugated diene polymer rubber and 11-40% by weight of a butadiene rubber. Silica is contained in the filler in an amount of 70% by weight or more. The ratio of the blending amount (Wte) of the aromatic modified terpene resin to the blending amount (Wbr) of the butadiene rubber, namely Wte / Wbr is 0.5-1.3, and the modified conjugated diene polymer rubber has a terminally modified group that contains a functional group interactive with silica. The modified conjugated diene polymer rubber has an aromatic vinyl unit content of 38-48% by weight, a vinyl unit content of 20-35% by weight, and a weight average molecular weight of 600,000-1,000,000. The aromatic modified terpene resin has a softening point of 100-150 DEG C.
Description
technical field [0001] The present invention relates to a rubber composition for tire treads, and in more detail, to a rubber composition for tire treads which has improved low rolling resistance, wet performance, and wear resistance above the conventional level. Background technique [0002] As performance requirements for pneumatic tires for high-performance vehicles, not only excellent steering stability and braking performance when driving on wet roads are required, but also excellent fuel consumption performance is required as concerns about global environmental issues increase. Therefore, by adding silica to the rubber composition constituting the tread portion, the dynamic viscoelastic properties such as the loss tangent (tan δ) of the tread rubber are modified, heat generation is suppressed, rolling resistance is reduced, fuel consumption performance is improved, and at the same time Improved wet performance. However, the lack of affinity between silica and diene ru...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00B60C1/00C08C19/25C08K3/04C08K3/36C08L9/00C08L93/00
CPCC08L9/00C08L15/00B60C1/0016C08C19/44Y02T10/86C08L93/00C08L83/10C08L9/06C08L2205/025C08L2205/035
Inventor 杉浦裕记
Owner THE YOKOHAMA RUBBER CO LTD