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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
                [1]   Li M, Li  Y, Zhang J, et al. Effect of compatibilizers on   acrylonitrile-butadiene rubber in the presence of epoxidized
                    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
                                                                                                           (R-05)


                                           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”
                                                                                                           (R-05)



                2019     第   45 卷                                                                       ·9·
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