The invention relates to the technical field of new materials for tire manufacturing, in particular to tread rubber of a low-heat-generation tire, a preparation method and application of the tread rubber and a low-heat-generation truck radial tire. The invention discloses tread rubber of a low-heat tire. The tread rubber comprises the following components in percentage by mass: 36-66% of raw rubber, 0-15% of synthetic rubber, 15-35% of carbon black, 0-15% of white carbon black, 1-4% of a vulcanizing agent, 2-15% of liquid rubber, wherein the ratio of the white carbon black to a silane coupling agent is (10: 1)-(10: 3); the ratio of sulfur to an accelerant in the vulcanizing agent is (1: 1)-(1: 3); the vulcanized cross-linked network structure is as follows: the proportion of monosulfide bonds is 5%-15%, the proportion of disulfide bonds is 15%-30%, and the proportion of polysulfide bonds is 60%-75%; the total crosslinking density is 15 * 10 <-5 > mol/cm < 3 > to 22 * 10 <-5 > mol/cm < 3 >. According to the tread rubber, on the basis of controlling a composition system, a vulcanization system and vulcanization conditions of a rubber material, the heat generation performance of the rubber material is controlled by designing the density of a cross-linked network structure and bond type distribution of the cross-linked network structure from a microstructure, and heat generation is greatly reduced on the basis of ensuring wear resistance.
本发明涉及轮胎制造新材料技术领域,尤其涉及一种低生热轮胎的胎面胶、制备方法、应用和低生热载重子午轮胎。一种低生热轮胎的胎面胶,包括以下组分:生胶质量份数含量36%~66%,合成胶占比0~15%,炭黑占比15%~35%,白炭黑占比0%~15%,白炭黑与硅烷偶联剂的比值为10:1~10:3,硫化剂占比1%~4%,硫化剂中硫磺与促进剂的比值为1:1~1:3,液体橡胶占比2%~15%;硫化后的交联网络结构如下:单硫键占比5%~15%,双硫键占比15%~30%,多硫键占比60%~75%;总交联密度在15×10‑5mol/cm3~22×10‑5mol/cm3。该胎面胶通过控制胶料的组合物体系、硫化体系、硫化条件上,从微观结构上设计交联网络结构密度及其键型分布来控制胶料的生热性能,做到保证耐磨的基础上大幅度的降低生热。
Tread rubber of low-heat-generation tire, preparation method and application of tread rubber and low-heat-generation truck radial tire
一种低生热轮胎的胎面胶、制备方法、应用和低生热载重子午轮胎
03.02.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Europäisches Patentamt | 2023
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