1、第2期Preparation and properties of multicomponent halogen-free flame retardantnatural rubber based on phosphoxanthrene derivativesWANG Jian1,WANG Long1,ZHANG Zheng1,JIA Yu-hui2,SHEN Rui-bing2,HAO Ming-zheng2,LIANG Yu-rong1,2（1.School of Materials Science and Engineering,North University of China,Taiyu
2、an 030051,China;2.Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China）Abstract:The flame retardant natural rubber（NR）vulcanizates were prepared by adding phos-phoxanthrene/triazine bibase synergic flame retar-dant（TGD）,dimethyl methyl phosphonate（DMMP）,expandable
3、 graphite（EG）and aluminum hydroxide（ATH）to NR.The effects of TGD/DMMP/EG/ATHcompound flame retardants on the flame retardancy,thermal stability and physical and mechanical pro-perties of NR vulcanizate were investigated.The re-sults showed that TGD/DMMP/EG/ATH compoundflame retardant could effective
4、ly improve the flameretardancy and thermal stability of NR vulcanizates,and reduce the heat release rate during combustion.When the amount of TGD/DMMP/EG/ATH com-pound flame retardant was 60 phr（mass）,the limit-ing oxygen index of NR vulcanizates could reach28.4%,the mass fraction of carbon residue
5、couldreach 25.61%,the heat release rate and total heatrelease amount of NR vulcanizates could be reducedby 95%and 21%.TGD/DMMP/EG/ATH compoundflame retardant had little effect on the physical andmechanical properties of NR vulcanizates.Key words:naturalrubber;phosphozapine/triazinediphenylsynergisti
6、cflameretardant;compoundflame retardant;flame retardant performance;thermalstability;physical and mechanical property国外动态2022年日本合成橡胶产品总产量下降据日本合成橡胶制造商协会近日公布的统计数据显示，2022年日本合成橡胶产品总产量为1378 kt，比上一年下降6.9%。其中，按产品品种统计，以轮胎为主的通用丁苯橡胶（SBR）产量为444.54kt，同 比下降14.2%；通 用 顺 丁 橡 胶（BR）产 量 为306 kt，同比增加0.4%。SBR产品中，固体SBR为3
7、40 kt，同比下降16.4%；非油SBR为200 kt，同比下降11.0%；耐油SBR为140 kt，同比下降23.1%；胶乳SBR为105 kt，同比下降16.0%。此外，2022年12月，日本合成橡胶产品总量为121kt，同比下降12.7%。其中，固体SBR为31 kt，同比下降15.7%；非油SBR为20 kt，同比下降17.1%；耐油SBR为11 kt，同比下降83.2%；胶乳SBR为8 kt，同比下降15.7%。其他橡胶方面，丁腈橡胶产品总量为8 kt，同比下降21.7%；氯丁橡胶为12 kt，同比增长9.8%；BR为24 kt，同比下降22.3%；塑胶橡胶为18 kt，同比下降4.0%。王健等.基于磷杂菲衍生物多组分无卤阻燃天然橡胶的制备及性能93
