Improved length of calcium sulfate crystal seeds and whiskers via ball milling and hydration treatment

doi:10.1016/j.cjche.2023.12.025

Abstract

Abstract: Elucidating the effect of growth periods on the quality of calcium sulfate whiskers (CSWs) prepared from calcium sulfate dihydrate (DH) is imperative. Herein, crystal seeds and whiskers were prepared from DH in a water–glycerol system. Longer whiskers were obtained from crystal seeds prepared via hydration of DH for 30 s than via ball milling for 5 min followed by hydration for 20 s. The attachment of cetyltrimethyl ammonium bromide and glycerol additives to the whisker tops promoted whisker growth. The whisker sponges exhibited good thermal barrier properties and compression cycle stability.

Key words: Hemihydrate gypsum whisker, Hydration, Ball milling/hydration, Crystal seed, Growth process

摘要： Elucidating the effect of growth periods on the quality of calcium sulfate whiskers (CSWs) prepared from calcium sulfate dihydrate (DH) is imperative. Herein, crystal seeds and whiskers were prepared from DH in a water–glycerol system. Longer whiskers were obtained from crystal seeds prepared via hydration of DH for 30 s than via ball milling for 5 min followed by hydration for 20 s. The attachment of cetyltrimethyl ammonium bromide and glycerol additives to the whisker tops promoted whisker growth. The whisker sponges exhibited good thermal barrier properties and compression cycle stability.

关键词: Hemihydrate gypsum whisker, Hydration, Ball milling/hydration, Crystal seed, Growth process

Yuke Li, Yuxin Liu, Jizhen Huang, Yi Mei. Improved length of calcium sulfate crystal seeds and whiskers via ball milling and hydration treatment[J]. Chinese Journal of Chemical Engineering, 2024, 71(7): 102-109.

Yuke Li, Yuxin Liu, Jizhen Huang, Yi Mei. Improved length of calcium sulfate crystal seeds and whiskers via ball milling and hydration treatment[J]. 中国化学工程学报, 2024, 71(7): 102-109.

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