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Structures and Properties of High Performance Passenger Car Radical Tire Tread Stock Modified with
Tran s-1, 4-poly(butadiene-co -isoprene) Copolymer- Acta Polymerica Sinica Issue 3, Pages: 419-428(2018)
- 作者机构：
1.山东省烯烃催化与聚合重点实验室 橡塑材料与工程教育部重点实验室 青岛科技大学高分子科学与工程学院 青岛 266042
2.山东省烯烃催化与聚合重点实验室 黄河三角洲京博化工研究院有限公司 滨州 256500
3.山东华聚高分子材料有限公司 滨州 256500
- 作者简介：
- 基金信息：
DOI：10.11777/j.issn1000-3304.2017.17101
CLC：Published：20 March 2018，
Received：24 April 2017，
Revised：3 June 2017，
扫 描 看 全 文
Hao Wang, Li-yuan Song, Yun-sheng Ma, Ri-guo Wang, Ai-hua He. Structures and Properties of High Performance Passenger Car Radical Tire Tread Stock Modified with
Tran s-1, 4-poly(butadiene-co -isoprene) Copolymer. [J]. Acta Polymerica Sinica (3):419-428(2018)Hao Wang, Li-yuan Song, Yun-sheng Ma, Ri-guo Wang, Ai-hua He. Structures and Properties of High Performance Passenger Car Radical Tire Tread Stock Modified with
Tran s-1, 4-poly(butadiene-co -isoprene) Copolymer. [J]. Acta Polymerica Sinica (3):419-428(2018) DOI： 10.11777/j.issn1000-3304.2017.17101.
摘要
研究了新一代合成橡胶-反式-1，4-丁二烯-异戊二烯共聚橡胶（TBIR）在高性能轿车轮胎胎面胶（溶聚丁苯橡胶/顺丁橡胶（SSBR/BR））中的应用及SSBR/BR/TBIR共混胶的结构与性能.结果表明，相对于无定型的SSBR和BR，TBIR由于具有一定的结晶性而呈现出较高的生胶强度、模量和韧性.但相比反式聚异戊二烯（TPI），由于丁二烯单体单元的引入降低了聚合物链的结构规整性，TBIR的结晶熔融焓、熔点和玻璃化转变温度均明显降低.采用10~20份TBIR与SSBR/BR并用改性，同时加入30份炭黑和45份白炭黑，SSBR/BR/TBIR混炼胶的格林强度和定伸应力提高，焦烧时间（
t
c
10
）和工艺正硫化时间（
t
c
90
）基本保持不变.SSBR/BR/TBIR混炼胶经过150℃硫化反应，制备的硫化胶物理机械性能优异，抗拉伸疲劳性能提高4.6~6.3倍，压缩强度提高21.4%~23.1%，耐磨耗性能提高10.8%~15.1%，耐湿滑性能提高13.6%~40.4%，滚动阻力维持不变.填料分散仪和透射电镜（TEM）结果表明，相比SSBR/BR硫化胶，SSBR/BR/TBIR硫化胶填料分散度提高7.3%~14.9%，填料聚集体平均尺寸降低1.4~2.7 μm.可结晶的TBIR的高生胶强度及模量可显著抑制混炼胶中填料的聚集，改善硫化胶中填料的分散性，最终贡献于SSBR/BR/TBIR硫化胶优异的抗拉伸疲劳性、高的耐磨性、抗湿滑性、压缩强度、定伸模量等性能，TBIR是应用于高性能轿车轮胎胎面胶的一种理想新合成橡胶.
Abstract
As a novel generation synthetic rubber
trans
-1
4-poly(butadiene-
co
-isoprene) copolymer rubber (TBIR) was used in high performance passenger car radical (PCR) tire tread stock
the structures and properties of solution polymerized styrene butadiene rubber (SSBR)/
cis
-1
4-poly-butadienere rubber (BR)/TBIR blends were studied. Compared with amorphous SSBR and BR
TBIR raw rubber showed greatly improved green strength
modulus and toughness due to its crystallizability. However
the enthalpy of the crystallization (Δ
H
)
the melting temperature (
T
m
) and the glass transition temperature (
T
g
) of TBIR were significantly lower than those of
trans
-1
4-polyisoprene (TPI) because of the decreased structure regularity of the polymer chains from the copolymerization of isoprene with butadiene. Blended with 30 phr carbon black and 45 phr silica
SSBR/BR/TBIR compounds with 10 -20 phr TBIR showed improved green strength
modulus at 100%
and hardness due to the crystallizability of TBIR. Blending TBIR with SSBR/BR
the scorch time (
t
c10
) and the optimum curing time (
t
c90
) of the compounds changed little. After vulcanization at 150 ℃
the obtained SSBR/BR/TBIR vulcanizates showed excellent physical
mechanical and dynamic properties
including greatly improved tensile fatigue resistance (4.6 to 6.3 times higher)
increased compressive strength (21.4% to 23.1% higher)
wear resistance (10.8% to 15.1% higher)
wet skid resistance (13.6% to 40.4% higher) and relatively unchanged rolling resistance. Both transmission electron microscopy (TEM) and carbon black dispersity test showed that the filler dispersion level in SSBR/BR/TBIR blends increased by 7.3% to 10.9%
and the mean filler aggregate size reduced by 1.4 -2.7 mm. The crystalline TBIR
with relatively high green strength and modulus of TBIR compared with the other general rubber materials like SSBR and BR
endowed the SSBR/BR/TBIR vulcanizates with good filler dispersion
and finally contributed to the greatly improved tensile fatigue resistance
increased wear resistance
wet skid resistance
compressive strength
modulus
etc
. So TBIR as a novel synthetic rubber is expected to be used in PCR tire tread stock for high performance.
关键词
反式丁戊橡胶高性能轮胎胎面胶抗湿滑性能耐磨耗性能轮胎魔鬼三角
Keywords
Trans-1 4-poly(butadiene-co-isoprene) copolymer rubberHigh performance tireTread stockWet skid resistanceWear resistanceMagic triangle
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