In order to overcome the defects of expensive Ce4+ salt and the difficulty in industrial application,the influence of the initiator concentration,the dosage of acrylonitrile and temperature on the ration and efficiency of grafting was studied with Fe~(2+)-H_2O_2 initiation system, assessing the grafting ratio and grafting efficiency as the evaluation index.
为克服引发剂铈盐较昂贵,工业应用难的缺点,实验采用Fe2+-H2O2引发体系引发丙烯腈接枝改性淀粉,采用接枝率和接枝效率作为评价接枝效果的指标,详细研究了接枝的工艺及其引发剂浓度、丙烯腈单体的用量和接枝温度对接枝率和接枝效率的影响。
The influence of the concentration of the initiator ,the dosage of acrylonitrile and grafting temperature on the grafting ratio and the grafting efficiency were researched with CAN-KPS initiation system for overcoming the defects of expensive Ce4+and difficulty in industrial application,acting the grafting ratio and the grafting efficiency as the evaluation index.
为克服引发剂铈盐较昂贵,工业应用难的缺点,实验采用CAN-KPS复合引发体系引发丙烯腈接枝改性淀粉,采用接枝率和接枝效率作为评价接枝效果的指标,详细研究了接枝工艺及其引发剂浓度、丙烯腈单体的用量和接枝温度对接枝率和接枝效率的影响,结果表明:接枝率达130%以上,接枝效率达90%以上,可较好地代替铈盐引发剂。
Main initiation systems,auxiliary means for the ring-opening polymerization of ε-caprolactone to obtain polycaprolactone and their application as biomedical materials are focused on and the developing direction is respected.
综述了聚己内酯的性质、合成与应用情况,重点介绍了由ε-己内酯合成聚己内酯所用的主要引发体系和辅助聚合手段、聚己内酯作为生物医用材料的应用,并探讨了聚己内酯今后的发展方向。
Rheological measurement was used to study the cross-linking polymerization of acrylamide and N,N’-menthylene-bis-acrylamide initiated by varied initiator systems.
使用装备自制的四叶片旋转叶片的应力控制流变仪测试不同引发体系作用下的丙烯酰胺(AM)自由基聚合过程的模量曲线,交联剂为N,N’-亚甲基双丙烯酰胺(MBAM)。
A two-part acrylic structural adhesive was prepared , which comprised a new initiator system composed of CHP,derivated thiurea and a s elf-synthesized accelerant,and its temperature of curing exothermic peak,curing times and shear strengths were tested.
以异丙苯过氧化氢、硫脲衍生物和自制促进剂为引发体系 ,制备了一种双主剂型丙烯酸酯结构胶 ,并对其固化放热峰温度、固化时间、剪切强度等方面进行测定。
A summary has been made emphatically on initiator system and the development of polymerization reaction.
本文阐述了超高相对分子质量聚丙烯酰胺聚合的研究进展，着重对引发体系、聚合反应的发展进行了概述，并指出了其发展前景。
Cationic polyacrylamide [P(AM-DMC)] was synthesized by aqueous copolymerization of acrylamide(AM) and methacryloyloxyethyltrimethyl ammonium chloride(DMC) using composite initiator system consisting of oxidant–reductant[(NH4)2S2O8,CH3NaO3S·2H2O] and azo-compound.
研究了不同引发体系对聚合反应的影响,探讨了络合剂、助溶剂及表面活性剂的种类和质量分数对产物特性黏数和溶解性的影响。
,through improving initiating system,dispersing system,modifying the stripper equipment and adopting new anti-scale agents,the medical grade PVC resin (M-1000) is developed,which contains residual VCM less than 0.
介绍了上海氯碱化工股份有限公司PVC厂在引进 2 0万t/a聚氯乙烯装置上 ,通过改进引发体系、分散体系 ,改造汽提装置 ,并采用新型防粘釜剂 ,开发出了医用级PVC树脂 (M - 10 0 0 ) ,该树脂中VCM的残留量≤ 0 。
Study and Application on Compound Photoinitiator System;
紫外光敏复合引发体系的研究及应用
Study on Bifunctional Complex System Initiated AM/DMC、AM/AA Copolymerization;
双官能度复合引发体系引发AM/DMC、AM/AA共聚合反应的研究
BP/THF initiation system initiated norbornene with maleic anhydride visible radical copolymerization
BP/THF引发体系引发降冰片烯与马来酸酐可见光自由基共聚合
Introducing subject internal self-control to ensure subject all-round development;
引导主体内在自控 确保主体全面发展
Together, these four things will trigger an OOBE.
这四点加起来就会引发脱体经验。
Emission of light caused by electric discharge in a gas.
电荧光通过气体的放电引起的发光
any entity that causes events to happen.
引起事件发生的任何实体。
A particle passing through the scintillator produces excitations.
粒子通过闪烁体引起激发。
Reflection on Educational System in Namibia
由纳米比亚大学办学体制引发的思考
Tunguska Explosion Sparks UFO Debate
“通古斯大爆炸”引发外星不明物体争论
Research on SMC System with Rapid Initation and High Filling;
高填充快速引发高性能SMC体系的研究
Reflection on physical education from Post-SARS Phenomena;
后“非典”现象引发的大学体育教学思考
Body-building of the whole people and college physical education--Reflections from SARS;
大学体育与全民健身——“非典”引发的思考
Using Experience Economy Theory to Lead the Development of F & B Enterprises;
以“体验经济”理论引导餐饮业发展
How to Lead to the Healthy Development of Private Economy;
略论如何引导个体私营经济健康发展
Harmonious Society under the Guidance of the Rural Development Research Sport
和谐社会引导下的农村体育发展研究
Research on collisions of many balls from astroblaster
由astroblaster引发的对多体碰撞问题的探究
Grafting of DMDAAC onto polypropylene nonwoven fabric by plasma treatment
等离子体引发DMDAAC接枝丙纶非织造布