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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of small particle diameter thermally expandable microspheres under atmospheric pressure for potential utilization in wood
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Preparation of small particle diameter thermally expandable microspheres under atmospheric pressure for potential utilization in wood

机译：大气压力下小粒径可热膨胀微球的制备，用于木材潜在利用

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Small particle diameter thermally expandable microspheres (TEMs) were obtained for potential utilization in wood, with special attention on their particle diameters and expansion properties. The revolving speed of homogenization (RS) of 800 similar to 3000 r min(-1)was applied in suspension polymerization under atmospheric pressure to prepare TEMs, withn-hexane as core material and the copolymer of acrylonitrile, methyl acrylate, and vinyl acetate as shell. (a) The effect of the RS on the particle diameters of TEMs presented a negative correlation at low RS and remained stable at high RS, (b) When the RS was 1900 similar to 2100 r min(-1), the optimized TEMs with average particle diameters of 3.82 similar to 4.06 mu m were prepared, possessing expansion ratios of 3.4 similar to 4.3 and an expansion temperature of 112 degrees C, (c)The optimized TEMs had core-shell structure and high encapsulated content of alkane, and (d) The TEMs with small particle diameters could be impregnated into wood and expand successfully in wood cell lumens.
机译：小粒径热膨胀微球（TEMs）是一种在木材中有潜在应用价值的微球，特别关注其粒径和膨胀性能。以正己烷为芯材，丙烯腈、丙烯酸甲酯和醋酸乙烯共聚物为壳材，在常压悬浮聚合中采用800转/分（RS）的均化转速（类似于3000转/分（-1））制备TEMs。（a） RS对TEMs粒径的影响在低RS下呈负相关，在高RS下保持稳定，（b）当RS为1900类似于2100 r min（-1）时，制备了平均粒径为3.82类似于4.06μm的优化TEMs，其膨胀比为3.4类似于4.3，膨胀温度为112℃，（c）优化后的TEMs具有核壳结构和较高的烷烃包封率；（d）粒径较小的TEMs可以浸渍到木材中，并在木材细胞腔中成功膨胀。

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