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1)  pre-irradiation
预辐射
1.
The ion chelated high-branching acrylamide copolymer flocculant is prepared using pre-irradiation activation method of the nature polymer chelated with metal ion and grafted with water soluble monomer.
预辐射体系中引入多价金属离子并未影响接枝共聚物的水溶性,并且明显提高了絮凝效率。
2.
To investigate the effect of low dose 12C6+ pre-irradiation on the cell cycle progression and DNA damage in mouse thymus and spleen, Kun-Ming strain mice were whole-body irradiated with 0, 0.
这些结果表明,低剂量预辐射处理可以减弱胸腺细胞的S期阻滞及脾脏细胞的G1期阻滞,并明显减轻胸腺脾脏细胞的DNA损伤程度。
2)  forecast radiation
预测辐射
3)  irradiation precuring
辐射预硫化
1.
And the effects of two irradiation precuring methods on the final mechanical properties were evaluated.
以天然橡胶(NR)为基材,分别采用γ射线和电子束辐射技术对其进行辐射预硫化,比较了两种辐射预硫化工艺下,NR的交联密度、格林强度及硫化速度随吸收剂量的变化趋势,并对比了γ射线和电子束辐射预硫化对材料最终力学性能的影响。
4)  Pre-irradiation grafting
预辐射接枝
1.
A study was made on the preparation of the cation-exchange membranes including sulfonate and carboxylic acid groups by pre-irradiation grafting of acrylic acid(AA) and sodium styrene sulfonate(SSS) onto high-density polyethylene(HDPE).
利用电子束引发预辐射接枝技术,在高密度聚乙烯(HDPE)上接枝丙烯酸(AA)和对苯乙烯磺酸钠(SSS),制备一种含羧酸基团和磺酸基团的双功能基阳离子交换膜,详细研究了反应温度、单体总浓度、pH值变化及溶剂类型对接枝率的影响规律,明确了实验条件与接枝率的对应关系。
5)  Preirradiation grafting
预辐射接枝
1.
In this article, a kind of weak acid ion exchange fiber was obtained by means of γ-ray preirradiation grafting copolymerization, and the conditions for the preirradiation grafting reaction was discussed.
用γ_射线预辐射接枝共聚的方法制备了一种弱酸型阳离子交换纤维PVF_g_AA ,分析了温度、时间、单体浓度、交联剂以及预辐照剂量和辐照后PVF的保存时间对接枝共聚反应的影响 。
2.
A kind of weak acid cation exchange fiber is obtained by means of ?ray preirradiation grafting copolymerization, and the conditions for the preirradiation grafting reaction are discussed.
采用r-射线预辐射接枝共聚的方法制备了一种弱酸型阳离子交换纤维PVF-g-AA,并研究了影响接枝共聚反应的条件。
6)  Preirradiation polymerization
预辐射聚合
补充资料:预辐射接枝
分子式:
CAS号:

性质:将聚合物A在有氧或真空下进行辐照,然后将辐照过的聚合物A浸入单体B中进行接枝反应。优点是:辐照与接枝分步进行,接枝单体不直接接受辐射能,因此最大限度地减少了射线引发了均聚反应;由于辐照与接枝是两个独立的过程,因此即使研究单位和生产单位没有辐照装置和相应的专业人员,也可用该方法进行生产和研究。缺点是聚合物自由基的利用效率较低。

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