Advanced Search

Citation: LEE BIN-TSOI, LIU YA-DUNG, SUN CHENG-FANG, CHANG YU-MING. THE TECHNICAL PROPERTIES OF CIS-1,4-POLYBUTADIENEⅠ. THE PROPERTIES OF CIS-1,4-POLYBUTADIENE OBTAINED WITH TITANIUM CATALYST[J]. Acta Polymerica Sinica, ;1963, 5(3): 110-122. shu

THE TECHNICAL PROPERTIES OF CIS-1,4-POLYBUTADIENEⅠ. THE PROPERTIES OF CIS-1,4-POLYBUTADIENE OBTAINED WITH TITANIUM CATALYST

  • The properties of cis-1,4-polybutadiene rubbers with different molecular weights which were obtained with titanium catalyst have been studied．The properties of raw cis-1，4-polybutadiene rubbers with different molecular weights are similar to each other with respect to (1) gel content，less than 1％，(2) cis-1，4-con-tent,93—97％，and (3) glass temperature，-110 to一114℃ (Table 1A)．However，the Mooney viscosity increases rapidly with [n] (Fig．1)．It is shown by stress-strain curves that a11 the cis-1，4-polybutadiene samples under examination do not crystallize during stretching (Fig．2)．The behaviour of cis-1，4-polybutadiene in milling is very sensitive to temperature．Carbon black compoundings have been carried out on an open laboratory mill at cylinder temperatures of 25，40，and 60。C，respectively． Smooth compounds from which vul-canizates with tensile strength over 200 kg／cm2 may be prepared can only be obtained at 25℃． When compounding is carried out at 40 or 60℃，cis-1，4-polybutadiene tends to crumble(Fig．4)，no smooth compound can be prepared，and the vulcanizate obtained loses tensile strength(Fig．3)．According to the following experimental results： (1)no gel formation，no signi ficant degradation，and no change in microstructure can be observed when cis-1，4一poly- butadiene is masticated either at 25℃ or at 40 or 60℃ (Fig．6 and Table 3)；(2)the effect of temperature on milling is reversible (Table 4)，it is presumed that the lOSS of tensile strength of the vulcanizate obtained from compound prepared at 40 or 60℃ is due to the difficulty of incorporation and dispersion of carbon black into the cis-1,4-polybutadiene rubber at a temperature above 40℃．This presumption is supported by the microscopic photographs of the CROSS-sections of the vulcanizates(Fig．5)．It is found that the tensile strength of the vulcanizate decreases rapidly as the mo-dulus(M300％) exceeds 60 kg／cm2 (Fig．8)．However，with a suitable amount of sulphur to control the degree of cross-14nking，vulcanizates of tensile strengths over 200 kg／cm2 can be obtained (Fig．8 and Table 1B)．The elastisity (Yerzley) and abrasive resistance of cis-1，4-polybutadiene vulcanizates are much better than those of natural rubber(Table 1B)．The effect of molecular weight of cis-1,4-polybutadiene on the mechanical proper-ties of the vulcanizate has been investigated． It is found that vulcanizates of tensile strength around 200 kg／cm2 can be obtained within wide range of molecular weights ([n] 2.5 to 3.6)，whereas elasticity increases with the M of the raw rubber(Fig．9)．
  • 加载中
  • 加载中
    1. [1]

      Chengqian Mao ,  Yanghan Chen ,  Haotong Bai ,  Junru Huang ,  Junpeng Zhuang . Photodimerization of Styrylpyridinium Salt and Its Application in Silk Screen Printing. University Chemistry, 2024, 39(5): 354-362. doi: 10.3866/PKU.DXHX202312014

    2. [2]

      Xiao SANG , Qi LIU , Jianping LANG . Synthesis, structure, and fluorescence properties of Zn(Ⅱ) coordination polymers containing tetra-alkenylpyridine ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2124-2132. doi: 10.11862/CJIC.20240158

    3. [3]

      Zhuoming Liang ,  Ming Chen ,  Zhiwen Zheng ,  Kai Chen . Multidimensional Studies on Ketone-Enol Tautomerism of 1,3-Diketones By 1H NMR. University Chemistry, 2024, 39(7): 361-367. doi: 10.3866/PKU.DXHX202311029

    4. [4]

      Jiaxin Su ,  Jiaqi Zhang ,  Shuming Chai ,  Yankun Wang ,  Sibo Wang ,  Yuanxing Fang . Optimizing Poly(heptazine imide) Photoanodes Using Binary Molten Salt Synthesis for Water Oxidation Reaction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408012-. doi: 10.3866/PKU.WHXB202408012

    5. [5]

      Tianlong Zhang ,  Rongling Zhang ,  Hongsheng Tang ,  Yan Li ,  Hua Li . Online Monitoring and Mechanistic Analysis of 3,5-diamino-1,2,4-triazole (DAT) Synthesis via Raman Spectroscopy: A Recommendation for a Comprehensive Instrumental Analysis Experiment. University Chemistry, 2024, 39(6): 303-311. doi: 10.3866/PKU.DXHX202312006

    6. [6]

      Shuhui Li ,  Rongxiuyuan Huang ,  Yingming Pan . Electrochemical Synthesis of 2,5-Diphenyl-1,3,4-Oxadiazole: A Recommended Comprehensive Organic Chemistry Experiment. University Chemistry, 2025, 40(5): 357-365. doi: 10.12461/PKU.DXHX202407028

    7. [7]

      Yi DING , Peiyu LIAO , Jianhua JIA , Mingliang TONG . Structure and photoluminescence modulation of silver(Ⅰ)-tetra(pyridin-4-yl)ethene metal-organic frameworks by substituted benzoates. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 141-148. doi: 10.11862/CJIC.20240393

    8. [8]

      Jingzhao Cheng ,  Shiyu Gao ,  Bei Cheng ,  Kai Yang ,  Wang Wang ,  Shaowen Cao . 4-氨基-1H-咪唑-5-甲腈修饰供体-受体型氮化碳光催化剂的构建及其高效光催化产氢研究. Acta Physico-Chimica Sinica, 2024, 40(11): 2406026-. doi: 10.3866/PKU.WHXB202406026

    9. [9]

      Zhiwei Chen , Heyun Sheng , Xue Li , Menghan Chen , Xin Li , Qiuling Song . Efficient capture of difluorocarbene by pyridinium 1,4-zwitterionic thiolates: A concise synthesis of difluoromethylene-containing 1,4-thiazine derivatives. Chinese Chemical Letters, 2024, 35(4): 108937-. doi: 10.1016/j.cclet.2023.108937

    10. [10]

      Fan JIA , Wenbao XU , Fangbin LIU , Haihua ZHANG , Hongbing FU . Synthesis and electroluminescence properties of Mn2+ doped quasi-two-dimensional perovskites (PEA)2PbyMn1-yBr4. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1114-1122. doi: 10.11862/CJIC.20230473

    11. [11]

      Min LIU , Huapeng RUAN , Zhongtao FENG , Xue DONG , Haiyan CUI , Xinping WANG . Neutral boron-containing radical dimers. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 123-130. doi: 10.11862/CJIC.20240362

    12. [12]

      Xiaoling LUO , Pintian ZOU , Xiaoyan WANG , Zheng LIU , Xiangfei KONG , Qun TANG , Sheng WANG . Synthesis, crystal structures, and properties of lanthanide metal-organic frameworks based on 2, 5-dibromoterephthalic acid ligand. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1143-1150. doi: 10.11862/CJIC.20230271

    13. [13]

      Wujun Jian , Mong-Feng Chiou , Yajun Li , Hongli Bao , Song Yang . Cu-catalyzed regioselective diborylation of 1,3-enynes for the efficient synthesis of 1,4-diborylated allenes. Chinese Chemical Letters, 2024, 35(5): 108980-. doi: 10.1016/j.cclet.2023.108980

    14. [14]

      Yan-Li Li , Zhi-Ming Li , Kai-Kai Wang , Xiao-Long He . Beyond 1,4-addition of in-situ generated (aza-)quinone methides and indole imine methides. Chinese Chemical Letters, 2024, 35(7): 109322-. doi: 10.1016/j.cclet.2023.109322

    15. [15]

      Qi Li , Zi-Lu Wang , Yun-He Xu . Copper-catalyzed 1,4-silylcyanation of 1,3-enynes: A silyl radical-initiated approach for synthesis of difunctionalized allenes. Chinese Chemical Letters, 2025, 36(3): 109991-. doi: 10.1016/j.cclet.2024.109991

    16. [16]

      Gaofeng WANG , Shuwen SUN , Yanfei ZHAO , Lixin MENG , Bohui WEI . Structural diversity and luminescence properties of three zinc coordination polymers based on bis(4-(1H-imidazol-1-yl)phenyl)methanone. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 849-856. doi: 10.11862/CJIC.20230479

    17. [17]

      Wenjie SHI , Fan LU , Mengwei CHEN , Jin WANG , Yingfeng HAN . Synthesis and host-guest properties of imidazolium-functionalized zirconium metal-organic cage. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 105-113. doi: 10.11862/CJIC.20240360

    18. [18]

      Yuanyuan Ping ,  Wangqing Kong . 光催化碳氢键官能团化合成1-苯基-1,2-乙二醇. University Chemistry, 2025, 40(6): 238-247. doi: 10.12461/PKU.DXHX202408092

    19. [19]

      Liangfeng Yang , Liang Zeng , Yanping Zhu , Qiuan Wang , Jinheng Li . Copper-catalyzed photoredox 1,4-amidocyanation of 1,3-enynes with N-amidopyridin-1-ium salts and TMSCN: Facile access to α-amido allenyl nitriles. Chinese Chemical Letters, 2024, 35(11): 109685-. doi: 10.1016/j.cclet.2024.109685

    20. [20]

      Zongfei YANG , Xiaosen ZHAO , Jing LI , Wenchang ZHUANG . Research advances in heteropolyoxoniobates. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 465-480. doi: 10.11862/CJIC.20230306

Get Citation
PDF
XML
Metrics
  • PDF Downloads(0)
  • Abstract views(126)
  • HTML views(0)

通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888
Powered By info@rhhz.net

/

DownLoad:  Full-Size Img  PowerPoint
Return