Page 103 - 《橡塑技术与装备》2024年6期
P. 103

材料与配方                                                  付京 等·耐电子束辐射 PP 材料的制备及性能研究


                Preparation and performance study of electron beam radiation resistant
                                                       PP materials


                                   Fu Jing, Gao Yu, Li Lina, Wang Guofeng, Jiang Shuai, Zhang Xinzhe
                          (Henan Tuoren Zhongke Medical Technology Co. LTD.,Xinxiang 453400, Henan, China)
                    Abstract: Anti electron beam radiation resistant PP materials were prepared by adding antioxidants, light
                stabilizers, and nucleating agents, and their effects on the mechanical, optical, and rheological properties of
                PP materials after electron beam radiation were studied. The results showed that in the PP/antioxidant system,
                with the increase of irradiation dose, its various properties did not differ significantly from pure PP materials;
                The optical performance deteriorates, the molecular chain entanglement weakens, and the mechanical
                properties deteriorate; After adding light stabilizers to the PP/antioxidant system, the yellowing index remained
                below 0 when the radiation dose was 25 kGy, and the optical and mechanical properties were better than
                those of pure PP materials and antioxidant systems; After adding nucleating agents to the PP/antioxidant/
                photostable system, the molecular chain entanglement ability becomes stronger, and the mechanical
                properties are optimal after electron beam irradiation, indicating that nucleating agents help improve the
                mechanical properties of PP materials after electron beam irradiation.
                    Key words: PP; light stabilizer; nucleating agent; optical performance; mechanical properties; rheological
                properties
                                                                                                            (R-03)



                                      中国轮胎畅销墨西哥,出口额三年翻番
                                  Chinese tires sold well in Mexico with exports doubling in three years

                    近年来,墨西哥从中国进口的轮胎数量呈现显著增长态势。据海关总署最新数据披露,过去三年中,墨西
                哥对中国轮胎的进口额实现翻番。具体来看,从 2020~2021 年,进口额由 5.94 亿美元攀升至 8.6 亿美元,而从
                2022~2023 年,这一数字又从 10.09 亿美元激增至 12.51 亿美元。
                    墨西哥对轮胎的巨大需求,源于其国内庞大的汽车市场以及作为全球领先的轻型商用车、公共汽车和卡车出
                口国之一的地位。2023 年,墨西哥国内市场的轻型商用汽车销售量达到 136.1 万辆,同比激增 24.4%。与此同时,
                墨西哥对全球的汽车出口额也按照相似的增长速度上升至 584.92 亿美元,进一步彰显了该国在全球汽车产业中
                的重要地位。
                    在墨西哥轮胎市场上,中国轮胎生产者正面临着来自普利司通、米其林、固特异、大陆集团、耐克森和倍耐
                力等国际知名品牌的激烈竞争。然而,中国轮胎的进口量持续增长,反映出中国轮胎在质量、价格以及供应链管
                理方面的综合优势。
                    据炭黑产业网了解,中国轮胎企业在面对国际竞争时,不仅注重产品质量的提升,还在技术创新、品牌建设
                和市场拓展方面不断加大投入。这些努力使得中国轮胎在墨西哥市场上占据了一席之地,并逐渐获得消费者的认
                可和信赖。
                    随着中国轮胎产业的持续升级和国际化进程的加速,中国轮胎在墨西哥市场的竞争力有望进一步提升。同时,
                墨西哥不断增长的汽车市场和出口需求,也将为中国轮胎提供更多的市场机遇和发展空间。
                                                                                       编自 “ 中国轮胎商务网 ”
                                                                                                          (R-03)







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                2024     第   50 卷                                                                      ·49·
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