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Current Issue
1994 Vol.11 Issue.1,
Published 1994-01-15
Article
Article
1
Study of UV-light polymerization by laser light scattering
Huang Jiaxian Feng yakai Zhu Duanhui Li Chanrong Zuo Ju
The determination results of laser light scattering show that certain auxilliaries (especially mercapto compounds) in polymerization system and the intensity of uv-light have clear influence on the induction period and polymerization rate. In addition, this paper have been found that the apparent polymerization rate is proportional to [Iuv]1·2
1994 Vol. 11 (1): 1-6 [
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1679
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6
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6
The Study on Multistage Batch Fractional Crystallization
Tian Hongbing, Xin Haiwei, Li Zhenhua, Chen Shuzhang
The process of batch fractional crystallization was studied. It was found that the process of parametric pumping fractional crystallization is composed of three parts: crystallization, sweating and melting. The main affecting parameters are bubbling velocity, temperature reducing and rising program and sweating time, etc. Experiments of crystallization and sweating of the mixture of naphthalene and thionaphthene were carried out in a crystallization tube. The effects of various parameters on this process were detected.
1994 Vol. 11 (1): 6-12 [
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1636
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6
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12
The Preparation of Hydrotalcite Type Mg-Al-ContaingFlame-Retardant Agent
Ma Fushan, Sun Liangchao, Sun Wensheng Lu Xifen
Hydrotalcite type magnesium-aluminum basic carbonate was prepared by precipitaion. Results show that the compound is an ideal flameretarading agent.
1994 Vol. 11 (1): 12-16 [
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1646
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6
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17
Applications of Microwave Dielectric Heating Effects in Chemical Synthesis
Yang Qiuhua Yang Hongxiu
The paper describes the principles of microwave dielectric heating effects and some recent applications in chemical synthesis. One can not only proceed the rate of chemical reactions, reduce the total reaction time, but also synthesize some new compounds using microwave heating techniques.
1994 Vol. 11 (1): 17-26 [
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1703
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5
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27
1994 Vol. 11 (1): 27-29 [
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1590
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6
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30
1994 Vol. 11 (1): 30-36 [
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1679
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6
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36
1994 Vol. 11 (1): 36-39 [
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1514
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6
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40
1994 Vol. 11 (1): 40-45 [
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2364
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5
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46
1994 Vol. 11 (1): 46-49 [
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1403
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6
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50
1994 Vol. 11 (1): 50-52 [
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1530
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6
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53
1994 Vol. 11 (1): 53-57 [
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1520
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57
1994 Vol. 11 (1): 57-62 [
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1399
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