Study on phenolic resin beads: Effect of reaction parameters on the properties of polymeric beads

被引：5
|
作者：
Shrivastava, Smriti [1 ]
Srivastava, Avanish Kumar [1 ]
Singh, Beer [1 ]
Shah, D. [1 ]
Verma, A. K. [1 ]
Gutch, P. K. [1 ]
机构：
[1] Def Res & Dev Estab, Gwalior 474002, Madhya Pradesh, India
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2012年 / 123卷 / 06期
关键词：
suspension polymerization; phenolic resin; synthesis; stabilizing agent; particle size distribution; ACTIVATED CARBON SPHERES; FORMALDEHYDE RESINS; SUSPENSION COPOLYMERIZATION; CONVERSION; STYRENE; FIBERS;
D O I：
10.1002/app.34705
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Well-sized spherical beads of phenolic resin (0.3-1.2 mm) with an extremely high compressive strength (> 8 kg/1.0 mm bead) and hardness (> 98%) were synthesized via suspension polymerization of phenol and formaldehyde. Barium hydroxide was used as a catalyst (1.68-10.13 wt %) to get larger size of resin beads. Poly(vinyl alcohol) (5.0-12.5 wt %) and hexamethylene tetramine were used as stabilizing agent and crosslinking agent, respectively. Comprehensive studies elucidated a specific relation between the reaction parameters and properties of the resin beads. Yield was found proportional to catalyst concentration and inversely proportional to stabilizing agent concentration. Particle size distribution curves got contracted and shifted toward a lower size range with higher concentration of catalyst and stabilizing agent. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 3741-3747, 2012
引用
收藏
页码：3741 / 3747
页数：7
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