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首页> 外文期刊>Journal of Applied Polymer Science >Mechanical, thermal, morphological, and curing properties of geopolymer filled natural rubber composites
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Mechanical, thermal, morphological, and curing properties of geopolymer filled natural rubber composites

机译：地质聚合物填充天然橡胶复合材料的机械，热，形态学和固化性能

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The main objective of this work was to investigate influence of natural rubber (NR) types on mechanical, thermal, morphological, and curing properties together with relaxation behavior of geopolymer filled NR composites with and without bis(triethoxysilylpropyl) tetrasulfide (TESPT) silane coupling agent. Three alternative types of NR: unmodified NR, and epoxidized NR with 25 (ENR-25) or 50 mol % epoxide (ENR-50) were exploited. Rubber compounds filled with GP particles were prepared in an internal mixer at 60 degrees C and 130-150 degrees C for the ones with and without TESPT, respectively. It was found that incorporation of GP significantly affected cure characteristics and mechanical properties of the rubber composites. That is, decreasing cure time was observed from 11.6, 3.2, and 7.0 min in gum NR, ENR-25, and ENR-50 to 6.9, 2.1, and 5.0 min in NR/GP, ENR-25/GP, and ENR-50/GP compounds, respectively. Furthermore, the ENR-25/GP and ENR-50/GP composites showed finely dispersed GP particles which indicate high filler-rubber interactions. The in situ silanization with TESPT in rubber composites enhanced the mechanical properties of NR/GP and ENR-25/GP composites but no such enhancement was found in the ENR-50/GP composite. This matched the observations of Payne effect, maximum tan delta, and stress relaxation properties of the composites. We found that the ENR-25/GP composites exhibited the best overall properties. (C) 2018 Wiley Periodicals, Inc.
机译：这项工作的主要目的是调查天然橡胶（NR）类型对机械，热，形态学和固化性能的影响，以及具有和不含双（三乙氧基甲硅烷基丙基）四硫化物（TESPT）硅烷偶联剂的地质聚合物填充NR复合材料的松弛行为。利用了三种替代类型的NR：未改性的NR和环氧化NR，具有25（ENR-25）或50mol％环氧化物（ENR-50）。将填充有GP颗粒的橡胶化合物在内部混合器中以60℃和130-150℃的内部混合器制备，分别有和没有躯体的情况。发现GP掺入显着影响橡胶复合材料的固化特性和机械性能。即，在NR / GP，ENR-25 / GP的11.6,3.2和7.0分钟内从11.6,3.2和7.0分钟观察到减少治愈时间，并在NR / GP，ENR-25 / GP中赋予5.0分钟和5.0分钟。分别为50 / gp化合物。此外，ENR-25 / GP和ENR-50 / GP复合材料呈细分散的GP颗粒，其表示高填充橡胶相互作用。橡胶复合材料中具有TESPT的原位硅烷增强了NR / GP和ENR-25 / GP复合材料的机械性能，但在enR-50 / GP复合材料中没有发现这种增强。这与复合材料的Payne效果，最大TANδ和应力松弛性能匹配。我们发现ENR-25 / GP复合材料表现出最好的整体性质。 （c）2018 Wiley期刊，Inc。

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