| 一种新型聚丁二烯 |
| |
| 引用本文： | 倪少儒,唐学明.一种新型聚丁二烯[J].化工学报,1983,34(1):84-89. |
| |
| 作者姓名： | 倪少儒 唐学明 |
| |
| 作者单位： | 中国科学院长春应用化学研究所
,中国科学院长春应用化学研究所 |
| |
| 摘 要： | MoCI_4OR与适当烷基铝组成的催化体系,对丁二烯聚合有很高的催化活性.在聚合温度为70℃、催化剂用量Mo/Bd比为5×10~(-5)时,转化率可达80%以上.聚合温度为30—70℃范围内所得聚合物分子量分布宽度指数为1.5—2.0.烯丙基卤等极性添加剂可以调节聚合物分子量和链结构,以烯丙基碘效果最好;随着烯丙基碘用量的增加,聚合物分子量降低,1,2-链节增多,链结构规整性增加.聚合物基本性能是:1,2-链节含量,88-97%;特性粘数,1.8—6.2(dl/g)玻璃化温度,-10—-27℃;屈服强度,6.5—8.5(kg/cm~2);断裂强度,12—25(kg/cm~2)断裂伸长,1700—2900%.
|
A New Polybutadiene |
| |
| Ni Shaoru and Tang Xueming
Changchun Institute of Applied Chemistry,Academia Sinica.A New Polybutadiene[J].Journal of Chemical Industry and Engineering(China),1983,34(1):84-89. |
| |
| Authors: | Ni Shaoru and Tang Xueming
Changchun Institute of Applied Chemistry Academia Sinica |
| |
| Abstract: | High active catalyst system for polymerization of butadiene may be obtained by combining MoCl4OR and proper aluminum alkyl. The conversion of 80% of butadiene can be achieved with 5×10-5 mole of MoCl4OC8H17 per 1 mole of butadiene at 70℃ in hydrogenated gasoline. The polydispersity of the polymer in the range of 1.5-2.0 is carried out with the temperature of polymerization at 30-70℃. For the purpose of regulating molecular weight and chain structure of the polymer allyl halides (allyl iodide) is satisfactory. With the increase of amount of allyl iodide, the molecular weight of the polymer decreases, the content of 1,2-units increases and the regularity of chain structure of the polymer rises. Some of the physical properties of the polymer are as follows: the content of 1,2-unit, 88-97%, limiting viscosity number
1.8-6.2(30℃, toluene), glass temperature, -27--10℃, tensile yield strength,
6.5-8.5 (kg/cm2), ultimate tensile strength, 12-25 (kg/cm2) and elongation at break, 1700-2900%. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
