Triangle adhesive and preparation method thereof

A technology of apex rubber and rubber material, which is applied in the field of tire processing, can solve the problems of vehicle control failure, apex flexion and bending, apex breakage, etc., and achieve the effect of improving flexibility, promoting cross-linking density, and promoting improvement

Active Publication Date: 2017-06-13
SICHUAN TYRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the hardness of the apex is too high and the toughness is insufficient, the tires will be greatly deformed under emergency acceleration or braking or turning, especially the sidewall parts, and the apex will undergo high-frequency flexion and bending. Broken, causing vehicle control failure

Method used

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  • Triangle adhesive and preparation method thereof
  • Triangle adhesive and preparation method thereof
  • Triangle adhesive and preparation method thereof

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preparation example Construction

[0034] A preparation method of apex rubber, which comprises three stages of mixing steps:

[0035] The first stage of mixing: 50-70 parts by weight of natural rubber and 30-50 parts by weight of butadiene rubber are mixed for the first time at a temperature of 90-110° C. for 20-40 seconds. Natural rubber and butadiene rubber are mixed as main ingredients at a temperature of 90-110°C for 20-40s to reduce the viscosity of natural rubber and butadiene rubber and maintain fluidity so that they can be fully mixed with other raw materials.

[0036] After the first mixing, add 2-3 parts by weight of stearic acid, 4-8 parts by weight of zinc oxide and 48-60 parts by weight of carbon black, and then add 5-8 parts by weight of aromatic oil at a temperature of 145-165 °C Next, carry out the second mixing for 1-2min to generate the initial compound.

[0037] Adding stearic acid and zinc oxide as activators together with carbon black into the rubber compound obtained after the first mixin...

Embodiment 1

[0046] A kind of apex rubber, by weight, its raw materials include: 55 parts of natural rubber, 45 parts of butadiene rubber, 2.3 parts of stearic acid, 78 parts of carbon black, 6 parts of zinc oxide, 6.5 parts of aromatic oil, accelerator TBBS 1.25 parts, 0.85 parts of accelerator HMT, 6 parts of insoluble sulfur, 0.1 parts of anti-scorch agent CTP, 8.5 parts of phenolic reinforcing resin, 1.3 parts of anti-aging agent TMQ and 1.2 parts of anti-aging agent 4020.

[0047] The preparation method of above-mentioned apex, it may further comprise the steps:

[0048] Mix the above-mentioned natural rubber and butadiene rubber at 90°C for 40s, then add stearic acid, zinc oxide, anti-aging agent 4020, anti-aging agent TMQ and 75% carbon black, then add aromatic oil at 145 Mix for 2 minutes under the condition of ℃ to generate the initial rubber compound.

[0049] The initial compound was kneaded at a temperature of 90°C for 40s, then the phenolic reinforcing resin and the remaining...

Embodiment 2

[0052] A kind of triangle rubber, by weight, its raw material comprises: 68 parts of natural rubber, 32 parts of butadiene rubber, 2.3 parts of stearic acid, 65 parts of carbon black, 6 parts of zinc oxide, 5.5 parts of aromatic hydrocarbon oil, accelerator TBBS 1.36 parts, 1.2 parts of accelerator HMT, 5.4 parts of insoluble sulfur, 0.1 parts of anti-scorch agent CTP, 12 parts of phenolic reinforcing resin, 1.3 parts of anti-aging agent TMQ and 1.2 parts of anti-aging agent 4020.

[0053] The preparation method of above-mentioned apex, it may further comprise the steps:

[0054] Mix the above-mentioned natural rubber and butadiene rubber at 92°C for 38s, then add stearic acid, zinc oxide, anti-aging agent 4020, anti-aging agent TMQ and 75% carbon black, then add aromatic oil at 148 Under the temperature condition of ℃, knead for 2 minutes to form the initial rubber compound.

[0055] After the initial compound was kneaded at 92°C for 38s, phenolic reinforcing resin and the r...

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Abstract

The invention discloses a triangle adhesive and a preparation method thereof and relates to the field of tire processing. The triangle adhesive is prepared from the following raw materials in parts by weight: 50-70 parts of natural rubber, 30-50 parts of butadiene rubber, 2-3 parts of stearic acid, 64-80 parts of carbon black, 4-8 parts of zinc oxide, 5-8 parts of aromatic oil, 2-3 parts of an accelerant, 4-7 parts of insoluble sulfur and 0.05-0.2 part of a scorch retarder. The triangle adhesive is high in hardness and good in tenacity. The preparation method of the triangle adhesive comprises the steps of mixing the natural rubber and the butadiene rubber; adding the stearic acid, the zinc oxide and the carbon black and then adding the aromatic oil for mixing to generate an initial sizing material; mixing the initial sizing material, adding the remaining carbon black for mixing to generate a middle sizing material; and mixing the middle sizing material and then adding the insoluble sulfur, the scorch retarder and the accelerant for mixing to prepare the triangle adhesive. The triangle adhesive is simple and convenient in process, a rubber compound is good in dispersity, a green tire molding process is normal and the quality defects of glue starvation of a vulcanized product tire are avoided.

Description

technical field [0001] The invention relates to the field of tire processing, and in particular to an apex rubber and a preparation method thereof. Background technique [0002] Car radial tires should have low rolling resistance, low noise, and high wet skid resistance. At the same time, the tires should have good wear resistance and be green and environmentally friendly in the processing process. In actual use, in addition to the above performance, special attention is paid to the handling safety and flexibility of the tire. The kinetic energy generated by the automobile engine is transmitted to the rim through a mechanical device, the rim is transmitted to the bead of the tire in contact with it, and the engine power is finally transmitted from the sidewall to the crown of the tire through the bead, and acceleration or braking is generated between the crown and the road surface. On the other hand, the size of the friction between the tire and the road surface or the vibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L61/06C08K13/02C08K3/04C08K5/09C08K3/22C08K3/06B29B7/00
CPCB29B7/005C08L7/00C08L9/00C08L2205/03C08L61/06C08K13/02C08K3/04C08K5/09C08K2003/2296C08K3/06
Inventor 向春东李贞延张俊伟李冬罗建刚董继学王廷华钟建武熊国华刘晓庆陈键王强刘超高秋英
Owner SICHUAN TYRE & RUBBER CO LTD
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