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理论与研究 魏继军 等·乙烯 - 醋酸乙烯共聚物 对天然橡胶 / 丁腈橡胶并用胶性能的影响
参考文献 : ratio on vulcanizate properties of blend of natural rubber and
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the miscibility of natural rubber/silicone rubber blends[J]. natural rubber. Academic Research International(1), 499~509.
Polymer Engineering & Science, 2014, 54(2):355~363. [6] 王文福 . EVA 橡胶的性能与共聚物中醋酸乙烯酯含量的关系
[2] 罗权焜 , 郭建华 . 几种合成橡胶的并用、硫化特性与性能的研 [J]. 世界橡胶工业 , 2004, 31(2):9~12.
究 [J]. 特种橡胶制品,2007, 28(2):5~13. [7] 张敬 , 王醴均 , 张纯 , 等 . 天然橡胶 /EVA 发泡复合材料发泡
[3] 牛凯晶 . 天然橡胶 / 丁腈橡胶 / 环氧化天然橡胶复合材料及其 质量及力学性能的分析 [J]. 高分子材料科学与工程 , 2014,
在隔震支座的应用 [D]. 北京化工大学 , 2016. 30(3):53~58.
[4] Zhao X, Yang J, Zhao D, et al. Natural rubber/nitrile [8] 单博 , 张小萍 . 乙烯 - 醋酸乙烯共聚物改性聚氯乙烯的研究 [J].
butadiene rubber/hindered phenol composites with high- 中国塑料 , 2018(2).
damping properties[J]. International Journal of Smart & [9] 杨钢 , 李启成 , 李雅明 , 等 . 乙烯 - 乙酸乙烯酯共聚物 (EVA)
Nano Materials, 2015, 6(4):239~250. 的性能及应用 [J]. 胶体与聚合物 , 2009, 27(3):45~46.
[5] Onyeagoro, G. N. (2012). Effect of zinc oxide level and blend
Effect of ethylene-vinyl acetate copolymer on the properties of natural
rubber/nitrile rubber blended rubber
Wei Jijun, Liu Yingjie, Gao Shengqiang, Lv Kanghui, Xue Meiling
(Qingdao University of Science & Technology, Qingdao 266042, Shandong, China)
Abstract: The effects of EVA (ethylene-vinyl acetate copolymer) on the vulcanization properties,
mechanical properties, damping properties and compression heat generation of natural rubber (NR)/
nitrile rubber (NBR) were investigated in this paper. The results show that with the increase of EVA content,
the vulcanization rate of NR/NBR blended rubber increased first and then decreased; The tensile strength
decreased, and the tear strength increased first and then decreased; the hardness increased, and the
rebound resilience decreased; The HED and HLE of the NR/NBR blended rubber first reduced and then
increased during the stretching/compression-recovery process; In the DMA spectrum, the loss peaks of NR
and NBR phase shift to low temperature, and the effective damping temperature domain is broadened;
compression set and fatigue temperature rise increased.
Key words: natural rubber; styrene-butadiene rubber; EVA; vulcanization characteristics; mechanical
properties; damping properties
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两轮胎橡胶企业被省科技厅入库
Two tire rubber enterprises were recorded by the provincial science and technology department
2017 年 4 月 2 日,陕西省科学技术厅公示 “2019 年第一批拟入库科技型中小企业名单 ”。
咸阳黄河轮胎橡胶有限公司、咸阳橡胶工业制品研究所有限公司两家轮胎橡胶企业,位列其中。
据悉,取得有效入库登记编号的科技型中小企业,同时符合研发费用加计扣除政策相关条件的,可以获得相
应的税收优惠。
同时,对符合条件的科技型中小企业,可以获得 20 万元 ~40 万元无偿支持。
如果是首次认定为高新技术企业,可一次性获得 20 万元奖励。
此外,如果名单上的企业被纳入陕西省高新技术企业重点培育对象,会在科技立项、创业孵化、成果转化等
方面获得优先支持。
摘编自“轮胎世界网”
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2019 第 45 卷 ·9·
年