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Trans-butadiene-isoprene rubber modified regenerated rubber as well as preparation method and purpose thereof

A technology of butadiene rubber and reclaimed rubber, applied in the field of reclaimed rubber, can solve the problems of difficult walking and maintenance of all-steel radial tires, and achieve the effect of improving dynamic fatigue performance

Active Publication Date: 2018-03-20
SHANDONG HUAJU POLYMER MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has made it difficult for many tire companies, especially bias-ply tire companies, to survive. Even all-steel radial tires, which have made good profits in recent years, have struggled.

Method used

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  • Trans-butadiene-isoprene rubber modified regenerated rubber as well as preparation method and purpose thereof
  • Trans-butadiene-isoprene rubber modified regenerated rubber as well as preparation method and purpose thereof
  • Trans-butadiene-isoprene rubber modified regenerated rubber as well as preparation method and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Trans-butadiene rubber TBIR modified reclaimed rubber consists of the following components in parts by weight:

[0035]

[0036]

[0037] Among the above rubber materials, the reclaimed rubber adopts recycled tire tread rubber powder, which contains 70% of natural rubber and 30% of carbon black; the molar content of butadiene structural units in trans-butylene rubber is 20%, and isoprene The molar content of olefinic units is 80%, the trans-1,4-structure content is 93%, and the Mooney viscosity is 80 (100°C, 3+4min). Prepare the rubber compound by mixing as follows:

[0038] (1) TBIR masterbatch was prepared by blending trans-butadiene rubber TBIR and 35 parts of carbon black N330. The mixing temperature was 70°C, the speed of the internal mixer was 70 rpm, and the mixing time was 16 minutes;

[0039] (2) Blend the TBIR masterbatch prepared in step (1) with 50 parts of reclaimed rubber, where the mixing temperature is 70°C, the speed of the internal mixer is 70rp...

Embodiment 2

[0045] In addition to the reclaimed rubber, the inner part of the reclaimed rubber is used, which contains 10% natural rubber, 60% butyl rubber and 30% white carbon black; the molar content of butadiene structural units in trans-butadiene rubber is 20%, The trans structure content is 90%, the Mooney viscosity is 60 (100°C, 3+4min), the filler is silica, and the rest are the same as in Example 1.

[0046] The mixing method and vulcanization of the sizing material in this embodiment are as described in Example 1.

Embodiment 3

[0048] Except that the amount of reclaimed rubber is 100 parts, the amount of TBIR is 5 parts, and the filler is calcium carbonate, the rest is the same as in Example 1.

[0049] The mixing method and vulcanization of the sizing material in this embodiment are as described in Example 1.

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Abstract

The invention relates to regenerated rubber modified by utilizing trans-butadiene-isoprene rubber as well as a preparation method and application thereof. The trans-butadiene-isoprene rubber modifiedregenerated rubber is prepared from the following components in parts by weight: 95 to 50 parts of regenerated rubber, 5 to 50 parts of the trans-butadiene-isoprene rubber TBIR, 2.5 to 50 parts of filling, 1.5 to 4 parts of zinc oxide, 0.1 to 0.6 part of stearic acid, 0 to 5 parts of homogenizing agent, 0.8 to 5 parts of sulfur, 0.5 to 3.5 parts of accelerant, 0.1 to 3 parts of anti-aging agent and 0 to 2.0 parts of anti-reversion agent. According to the preparation method, the regenerated rubber is modified by adopting the trans-butadiene-isoprene rubber TBIR; the dispersity of the filling can be improved; vulcanized rubber is increased by 30 to 70 percent in tensile strength, by 40 to 100 percent in 300-percent stress at definite elongation, by 10 to 20 percent in abrasion performance and by 100 to 700 percent in flexural fatigue performance. The regenerated rubber can be used for a tire tread, a tire side, a tire body, a belted layer and an airtight layer of a tire, a highway pavement and a runway and the dynamic fatigue performance is improved.

Description

technical field [0001] The invention relates to reclaimed rubber, in particular to a reclaimed rubber modified by trans-butadiene rubber and its preparation method and application. Background technique [0002] In recent years, with the increase of oil price and the fluctuation of natural rubber price, the synthetic rubber industry is facing constant impact of price fluctuation. The price of synthetic rubber has soared all the way, SBR is close to natural rubber, and BR even exceeds the price of natural rubber. As the main downstream application field of rubber, the price of tires has little room to rise. This has caused many tire companies, especially bias-ply tire companies, to be difficult to maintain. Even all-steel radial tires, which have made good profits in recent years, have been struggling. How to break this deadlock, face the sharp price increase of natural rubber and synthetic rubber, and explore the third rubber resource has reached the point of no delay. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L17/00C08L7/00C08L23/22C08L9/06C08L9/00C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09C08K3/36B60C1/00
CPCC08L9/00C08L17/00B60C1/00C08L2205/03C08K2003/2296C08L7/00C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09C08L23/22C08K3/36
Inventor 贺爱华邵华锋王日国王浩
Owner SHANDONG HUAJU POLYMER MATERIALS CO LTD
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