細乳液聚合法制備高固含量聚丙烯酸酯乳液及性能
發(fā)布時間：2018-09-10 07:07
【摘要】：以十二烷基硫酸鈉(SDS)為乳化劑,正丁醇為助穩(wěn)定劑,通過細乳液聚合法制備了固含量高達60%的聚丙烯酸酯乳液�？疾炝薙DS用量對乳液凝膠率、轉(zhuǎn)化率、旋轉(zhuǎn)黏度的影響,進一步考察了理論固含量對乳液旋轉(zhuǎn)黏度、粒徑大小及其分布的影響。結(jié)果表明:隨著SDS用量的增加,固含量為60%時,乳液凝膠率先降低后增加,轉(zhuǎn)化率變化較小,旋轉(zhuǎn)黏度增加;隨著理論固含量的增加,乳液旋轉(zhuǎn)黏度明顯增加,粒徑大小及其分布明顯增大;透射電鏡(TEM)結(jié)果與動態(tài)光散射(DLS)測試結(jié)果一致,高固含量乳液呈現(xiàn)出較寬的粒徑分布。將該乳液應用于皮革涂飾工藝中,涂飾后革樣力學性能與市售同類皮革涂飾劑相當,耐濕擦、透氣性能都有所提高。
[Abstract]:Polyacrylate emulsion with solid content of up to 60% was prepared by fine emulsion polymerization with sodium dodecyl sulfate (SDS) as emulsifier and n-butanol as assistant stabilizer. The effects of the amount of SDS on the gel yield, conversion rate and rotational viscosity of the emulsion were investigated, and the effects of theoretical solid content on the rotational viscosity, particle size and distribution of the emulsion were investigated. The results show that with the increase of the amount of SDS and the solid content of 60%, the emulsion gel decreases first and then increases, the conversion rate changes little, and the rotational viscosity increases, and with the increase of theoretical solid content, the rotational viscosity increases obviously. The particle size and its distribution increased obviously, and the (TEM) results of transmission electron microscope were consistent with those of dynamic light scattering (DLS) measurements, and the high solid content emulsion showed a wide particle size distribution. When the emulsion was applied to the leather finishing process, the mechanical properties of the leather samples after finishing were comparable to those of the similar leather finishing agents sold on the market, and the wetting resistance and air permeability were improved.
【作者單位】： 陜西科技大學輕工科學與工程學院;
【基金】：國家自然科學基金青年基金項目(21406135) 陜西省自然科學基礎研究計劃面上項目(2015JM2061) 陜西科技大學科研團隊項目(TD12-03)~~
【分類號】：TS529.5
本文編號：2233741
[Abstract]:Polyacrylate emulsion with solid content of up to 60% was prepared by fine emulsion polymerization with sodium dodecyl sulfate (SDS) as emulsifier and n-butanol as assistant stabilizer. The effects of the amount of SDS on the gel yield, conversion rate and rotational viscosity of the emulsion were investigated, and the effects of theoretical solid content on the rotational viscosity, particle size and distribution of the emulsion were investigated. The results show that with the increase of the amount of SDS and the solid content of 60%, the emulsion gel decreases first and then increases, the conversion rate changes little, and the rotational viscosity increases, and with the increase of theoretical solid content, the rotational viscosity increases obviously. The particle size and its distribution increased obviously, and the (TEM) results of transmission electron microscope were consistent with those of dynamic light scattering (DLS) measurements, and the high solid content emulsion showed a wide particle size distribution. When the emulsion was applied to the leather finishing process, the mechanical properties of the leather samples after finishing were comparable to those of the similar leather finishing agents sold on the market, and the wetting resistance and air permeability were improved.
【作者單位】： 陜西科技大學輕工科學與工程學院;
【基金】：國家自然科學基金青年基金項目(21406135) 陜西省自然科學基礎研究計劃面上項目(2015JM2061) 陜西科技大學科研團隊項目(TD12-03)~~
【分類號】：TS529.5
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