Application of continuously-prepared rubber masterbatch to rubber compound for shoulder pad of truck tire

A technology of rubber masterbatch and truck tires, which is applied in tire production, rubber raw material production, tire shoulder pad rubber production from masterbatch, and continuous preparation of rubber masterbatch. It can solve the difficult to achieve mixing effect, etc. problems, to achieve the effect of reducing the mixing process, improving the dispersion of fillers, and reducing heat accumulation

Inactive Publication Date: 2015-02-25
EVE RUBBER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent 1541245 applied by Michelin describes the diene rubber composition for tires. The highly dispersed silica prepared by a special process is used in the composition. It is difficult to achieve the expected mixing effect by simply using the mechanical shear mixing method.

Method used

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  • Application of continuously-prepared rubber masterbatch to rubber compound for shoulder pad of truck tire
  • Application of continuously-prepared rubber masterbatch to rubber compound for shoulder pad of truck tire
  • Application of continuously-prepared rubber masterbatch to rubber compound for shoulder pad of truck tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Add 45 parts of carbon black to 100 parts of natural rubber n-hexane solution, mix, inject continuously into the coagulator for coagulation, and then remove the solvent and dry to obtain masterbatch A.

[0056] Put 100phr masterbatch A into the internal mixer and mix evenly, and add 3 parts of stearic acid, 3.5 parts of zinc oxide, 0.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 4020, and put the mixed rubber after 8 hours After adding 1.3 parts of accelerator NS and 2.5 parts of HD OT20 into the internal mixer and mixing, the mixed rubber was parked for 8 hours and then vulcanized to positive vulcanization with a flat vulcanizer at 150°C to prepare a wet-process shoulder pad rubber example 1.

[0057] Table 4 Comparative Example 1 and Example 1 performance comparison table

[0058]

Comparative example 1

Example 1

Mixing process

dry mixing

wet mixing

Hardness,RT,ShoreA

61

60

[0059] Tens...

Embodiment 2

[0065] Add 50 parts of N550 carbon black into 100 parts of natural rubber n-hexane solution, mix, inject continuously into the coagulator for coagulation, and then remove solvent and dry to obtain masterbatch A2.

[0066] After mixing 50 parts of white carbon black Newsil1165, 6 parts of silane coupling agent TESPT, and 100 parts of natural rubber n-hexane solution, they were continuously injected into the coagulator for coagulation, and then desolventized and dried to obtain masterbatch B2.

[0067] Add masterbatch A2 and masterbatch B2 to a total of 100phr of rubber, and add them to the internal mixer according to the ratio of 1:1, mix evenly, add 2 parts of stearic acid, 5 parts of zinc oxide, 0.5 parts of protective wax, and 1.5 parts of anti-aging Add 1.5 parts of accelerator CZ, 0.2 parts of accelerator TMTD, and 2 parts of HDOT20 in the internal mixer after the rubber mixture is parked for 8 hours. After being vulcanized to positive vulcanization by a flat vulcanizer at...

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Abstract

The invention relates to an application of continuously-prepared rubber masterbatch to the rubber compound for the shoulder pad of a truck tire, comprising the following steps of: (a) adding a filler, optionally adding an additive into a rubber solution, wherein the additive can be a coupling agent, an anti-aging agent, an activating agent or / and oil, mixing and dispersing uniformly, injecting the dispersed mixture into a coagulator for coagulation, desolventizing, and drying to obtain the rubber masterbatch; (b) adding the rubber masterbatch into a mixer, optionally adding an anti-aging agent, an activating agent or / and oil, mixing, directly adding a coupling agent and an accelerating agent, and mixing uniformly to obtain a rubber compound for the shoulder pad of the tire of the truck; and (c) vulcanizing the rubber compound to obtain the vulcanized rubber compound for the shoulder pad of the truck tire.

Description

technical field [0001] The invention relates to the field of production of rubber raw materials and the technical field of tire production, in particular to the technical field of continuous preparation of rubber masterbatch and the field of producing tire shoulder pad rubber using the masterbatch prepared by the method. Background technique [0002] So far, most tire manufacturers still use the traditional mixing process, that is, adding rubber, fillers and additives to large-scale mixing equipment for mixing. The disadvantage of using this kind of mixing process is that the mixing site is large, the mixing time is long, and the energy consumption is high. And using this mixing process, the mixing quality of the mixed rubber is greatly affected by equipment and process fluctuations, which has a certain impact on the quality stability of the mixed rubber. [0003] In recent years, the application of masterbatch prepared by related liquid phase mixing in the tire manufacturi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/22C08L7/00C08K13/02C08K3/36C08K3/04B29C35/02B29B7/74
Inventor 周宏斌石超王宝金张元洪
Owner EVE RUBBER RES INST
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