天然虾青素改性白炭黑/天然橡胶复合材料的制备与性能

doi:10.16085/j.issn.1000-6613.2018-1324

化工进展 ›› 2019, Vol. 38 ›› Issue (04): 1872-1878.DOI: 10.16085/j.issn.1000-6613.2018-1324

天然虾青素改性白炭黑/天然橡胶复合材料的制备与性能

姚彬彬^1,²(),阚泽^1,²()

1. 青岛科技大学高分子科学与工程学院，山东青岛 266042
2. 山东省教育厅生物基高分子材料重点实验室，山东青岛 266042

收稿日期:2018-06-27 修回日期:2018-12-19 出版日期:2019-04-05 发布日期:2019-04-05
通讯作者: 阚泽
作者简介:<named-content content-type="corresp-name">姚彬彬</named-content>（1990—），男，博士研究生，研究方向为橡胶的加工与改性。E-mail：<email>qkdyaobb@163.com</email>。|阚泽，讲师，硕士生导师，主要从事聚合物加工及改性方面的研究。E-mail：<email>zkan@qust.edu.cn</email>。
基金资助:
山东省自然科学基金(ZR2016EMP03、ZR2016XJ004);绿色轮胎与橡胶协同创新中心开放课题(2015GTR0015)

Preparation and properties of natural astaxanthin modified silica/natural rubber composites

Binbin YAO^1,²(),Ze KAN^1,²()

1. School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
2. Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, Qingdao 266042, Shandong, China

Received:2018-06-27 Revised:2018-12-19 Online:2019-04-05 Published:2019-04-05
Contact: Ze KAN

摘要/Abstract

摘要：

采用天然虾青素对白炭黑表面进行物理改性，并与天然橡胶（NR）制备成复合材料。利用RPA、DMA、SEM等测试手段对天然虾青素改性白炭黑/天然橡胶复合材料的结构与性能进行表征。结果表明，在硫化特性方面，与未采用天然虾青素改性白炭黑相比，采用天然虾青素改性白炭黑所得胶料的焦烧时间和工艺正硫化时间均缩短，促进了橡胶的硫化过程；在物理力学性能方面，所得硫化胶的拉伸强度基本不变，回弹性和耐磨性明显增加，压缩生热降低；在动态黏弹性方面，所得硫化胶的Payne效应明显降低，填料的分散性在一定程度上得到改善；在动态力学性能方面，所得硫化胶的滚动阻力降低，玻璃化转变温度提高。特别地，在耐老化方面，天然虾青素改性白炭黑/天然橡胶复合材料的耐热空气老化性能明显提高。

关键词: 天然虾青素, 天然橡胶, 聚合物加工, 力学性能, 二氧化硅, 聚集

Abstract:

The surface of silica was physically modified with natural astaxanthin and composited with natural rubber. The structure and properties of natural astaxanthin-modified silica/natural rubber composites were characterized by RPA, DMA and SEM. The results showed that compared with the modified silica without natural astaxanthin in the vulcanization characteristics, the scorch time and the positive vulcanization time of the rubber obtained by using natural astaxanthin-modified silica were shortened, which promoted the vulcanization process of rubber. In terms of physical and mechanical properties, the tensile strength of the obtained vulcanizate was substantially unchanged, the resilience and abrasion resistance were significantly increased and the compression heat generation was lowered. In terms of dynamic viscoelasticity, the Payne effect of the obtained vulcanizate was significantly reduced and the dispersibility of the filler was improved to some extent. In terms of dynamic mechanical properties, the rolling resistance of the obtained vulcanizate was lowered and the glass transition temperature was increased. In particular, in terms of aging resistance, the heat-resistant air aging performance of the natural astaxanthin-modified silica/natural rubber composite material was remarkably improved.

Key words: natural astaxanthin, natural rubber, polymer processing, mechanical properties, silica, aggregation

中图分类号:

O636.9

姚彬彬, 阚泽. 天然虾青素改性白炭黑/天然橡胶复合材料的制备与性能[J]. 化工进展, 2019, 38(04): 1872-1878.

Binbin YAO, Ze KAN. Preparation and properties of natural astaxanthin modified silica/natural rubber composites[J]. Chemical Industry and Engineering Progress, 2019, 38(04): 1872-1878.

图/表 8

表1 白炭黑/天然橡胶胶料的硫化特性

试样

最小转矩

/dN·m

最大转矩

/dN·m

M _H-M _L

/dN·m

t ₁₀

/min

t ₉₀

/min

1^#

2^#

3^#

表2 白炭黑/天然橡胶硫化胶的物理力学性能

试样

拉伸强度

/MPa

300%定伸

应力/MPa

100%定伸应力/%

断裂伸

长率/%

撕裂强度

/kN·m^-1

硬度

(邵A)

回弹性

1^#

2^#

3^#

图1 白炭黑/天然橡胶硫化胶的磨耗性能

图2 白炭黑/天然橡胶硫化胶的耐热空气老化性能

图3 白炭黑/天然橡胶硫化胶的压缩生热性能

图4 白炭黑/天然橡胶硫化胶的储能模量G'对应变振幅的依赖性

图5 白炭黑/天然橡胶硫化胶的动态力学性能

图6 白炭黑/天然橡胶硫化胶拉伸试样的断面形貌

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天然虾青素改性白炭黑/天然橡胶复合材料的制备与性能

Preparation and properties of natural astaxanthin modified silica/natural rubber composites

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