窄分布脂肪醇聚氧乙烯醚在二氧化硅气凝胶改性中的应用性能

doi:10.3969/j.issn.2097-2806.2025.02.005

日用化学工业（中英文） ›› 2025, Vol. 55 ›› Issue (2): 170-175.doi: 10.3969/j.issn.2097-2806.2025.02.005

窄分布脂肪醇聚氧乙烯醚在二氧化硅气凝胶改性中的应用性能

石程^1,²,任真^1,^2,^*(),张广良^1,²

1.中国日用化学工业研究院，山西太原 030001
2.功能性表面活性剂山西省重点实验室，山西太原 030001

收稿日期:2024-03-12 修回日期:2025-01-22 出版日期:2025-02-22 发布日期:2025-02-28
通讯作者: 任真
基金资助:
中国轻工集团公司科技创新基金项目(ZQ2022JC-GG02);溢多利研究基金资助项目(VTR 2021);自然堂研究基金资助项目(自然堂2021)

Application of narrow-distribution fatty alcohol polyoxyethylene ether in modification of silica aerogel

Cheng Shi^1,²,Zhen Ren^1,^2,^*(),Guangliang Zhang^1,²

1. China Research Institute of Daily Chemical Industry, Taiyuan, Shanxi 030001, China
2. Shanxi Key Laboratory of Functional Surfactants, Taiyuan, Shanxi 030001, China

Received:2024-03-12 Revised:2025-01-22 Online:2025-02-22 Published:2025-02-28
Contact: Zhen Ren

摘要/Abstract

摘要：

分别对工业级常规脂肪醇聚氧乙烯醚（AEO₃）和窄分布AEO₃在乙醇中的表面性质进行分析，并对疏水二氧化硅气凝胶在两种AEO₃的乙醇溶液中的润湿性和分散性进行了对比研究。对比研究发现，脂肪醇含量对疏水二氧化硅气凝胶在AEO₃乙醇溶液中的润湿性有明显影响。使用两种AEO₃对疏水二氧化硅气凝胶进行改性后发现，可以通过改变AEO₃溶液中脂肪醇含量和EO分布调控改性后二氧化硅气凝胶的亲水性。脂肪醇含量越高，亲水性越好；高EO加合数的AEO含量越少，亲水性越差。测试结果表明，使用窄分布AEO₃改性得到二氧化硅气凝胶的接触角更接近90°。

关键词: 脂肪醇聚氧乙烯醚, 窄分布, 应用性能

Abstract:

The surface properties of industrial-grade fatty alcohol polyoxyethylene ether （AEO₃） and narrow-distribution AEO₃ in ethanol were analyzed, respectively. The wettability and dispersibility of hydrophobic silica aerogel in the ethanol solutions of the two kinds of AEO₃ were comparatively studied. The results showed that the content of free fatty alcohol had significant influence on the wettability of hydrophobic silica aerogel in the ethanol solutions of AEO₃. Then the modified silica aerogels by using two types of AEO₃ were prepared, which indicated that the hydrophilicity of the modified silica aerogels could be modulated by changing the content of free fatty alcohol in AEO₃ solution and the EO distribution. The higher the content of free fatty alcohol, the better the hydrophilicity; the lower the average EO addition number, the worse the hydrophilicity. The results showed that the contact angle of the silica aerogel modified with narrow-distribution AEO₃ was closer to 90°.

Key words: fatty alcohol polyoxyethylene ether, narrow distribution, application property

中图分类号:

TQ423

石程,任真,张广良. 窄分布脂肪醇聚氧乙烯醚在二氧化硅气凝胶改性中的应用性能[J]. 日用化学工业（中英文）, 2025, 55(2): 170-175.

Cheng Shi,Zhen Ren,Guangliang Zhang. Application of narrow-distribution fatty alcohol polyoxyethylene ether in modification of silica aerogel[J]. China Surfactant Detergent & Cosmetics, 2025, 55(2): 170-175.

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	石蜡膜接触角θ/ （°）	表面张力γ/ （mN/m）
无水乙醇	25.5	22.867
c-AEO₃	29.2	22.950
n-AEO₃	31.8	23.013

	接触角/（°）	吸水量/g	分层时间/min	沉降率/%
无水乙醇	77.69	0.121	267	98
c-AEO₃	52.90	0.128	145	96
n-AEO₃	75.19	0.092	162	97
添加3% （w/%）脂肪醇后的c-AEO₃	50.67	—	—	—
添加6% （w/%）脂肪醇后的c-AEO₃	49.24	—	—	—

	接触角/（°）	润湿时间/s	吸水量/g
c-MSA	83.65	89.59	0.126
n-MSA	89.58	105.97	0.135

	原始质量/mg	失重质量/mg	失重率/%
c-MSA	6.7	3.92	58.51
n-MSA	4.8	2.62	54.58

窄分布脂肪醇聚氧乙烯醚在二氧化硅气凝胶改性中的应用性能

Application of narrow-distribution fatty alcohol polyoxyethylene ether in modification of silica aerogel

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