The various definitions for the degree of branching(DB)of hyperbranched polymers were reviewed and an improved definition was presented for the general ABg polycondensation system.
用聚合反应动力学模型,详细分析了ABg型缩聚体系中各种结构单元的演变,对超支化聚合物支化度的各种定义作了比较,并对ABg型反应体系的支化度提出了一个改进的定义,使得支化度随g的增加而增加,当g从2增加到无穷大,最大支化度相应地从0。
The effect of end group, chain factor (n) and the degree of branching on the main chain of R(?)CH_2(?)_n R on △_fH_m~(?)(R(?)CH_2(?)_nR, g) was discussed.
考虑到影响R_1CH_2_nR_2的气相标准生成焓△_fH_m~(R_1CH_2_nR_2,g)的各种因素,包括端基,链因子(n)及主链上取代基的支化度等。
The structural units and degree of branching of the hyperbranched polymers formed from general self-condensing vinyl polymerization(SCVP) with non-equal reactivities were investigated by the mecha-nism of kinetics.
分析了一般的非等速率自缩合乙烯基聚合反应(SCVP)所生成的超支化聚合物体系的结构单元和支化度。
The branching degrees, melting points and crystallinity of the products were measured by DSC and FT IR.
结果表明新型高活性催化剂具有和齐聚性能相关的很好的催化乙烯与 1-丁烯共聚合的性能 ;当共聚单体中 1-丁烯含量由 7% (体积 ,下同 )增加到 2 6 % ,产物的支化度 (乙基数 / 10 0 0 C)从 11。
SOLUTION PROPERTIES AND LONG CHAIN BRANCHING OF POLYVINYL ACETATE
聚乙酸乙烯酯的溶液性质及长链支化度
Deepening the Regime Reform of Financial Expenditure and Optimizing Its Structure;
深化财政支出制度改革优化财政支出结构
Stiffness Matching Optimum Design of Multi-Stanchion Landing Gear Airplane;
多支柱起落架飞机支柱刚度优化匹配设计
Influence of the Glass Transition Temperature of Hyperbranched Polymers with Simultancous Changes in End Groups and Branchpoints
超支化高分子体系的端基和支化对玻璃化温度的影响
United Nations System for the Standardized Reporting of Military Expenditures
联合国军事支出标准化报告制度
Optimization of Engineering Project Payment Scheduling: A Case Study;
工程项目支付进度优化:一个案例研究
Study on Integrated Optimization of Multi-mode Project Payment Scheduling;
多模式项目支付进度的整合优化研究
On the Optimization Theory of Financial Expenditure Structure and the Systematic Guarantee;
财政支出结构优化理论与制度保证(下)
Optimization Investigation of Spacer Height in CNT-FED Backlight Unit
CNT-FED背光源中支撑体高度的优化研究
Optimization Design of Active Magnetic Bearing Stiffness Based on ANSYS
基于ANSYS的电磁轴承支承刚度优化
Simplified calculation on length of line-contact of buckling-restrained brace
屈曲约束支撑线接触长度的简化计算
Standardization and Systematization of Students′ Party Branch in Colleges and Universities;
高校学生党支部规范化、制度化建设探讨
United Nations standardized system of reporting on military expenditures
联合国关于军事支出的标准化报告制度
Neolithic Cultures in Baluchistan and the Indus Plains
俾路支和印度河平原的新石器时代文化
Chalcolithic Cultures in Baluchistan and the Indus Plains
俾路支和印度河平原的铜石并用时代文化
When the learning of a language attains certain level, its continued growth depends on the cultural dynamics.
语言到了一定的高度，就必须有文化素质的支撑。
Preparation and Functionalization of Temperature-responsive Hyperbranched Polymers;
温度响应性超支化聚合物的制备及性能研究
Algorithm and Implementation on Re-mining of Association Rules Based on Support Changes;
基于支持度变化的关联规则挖掘算法及实现