【摘要】：本文采用熱致相分離法制備聚丙烯微孔膜,并考察了各種影響因素對(duì)聚丙烯膜性能的影響。首先,通過查找溶解度參數(shù),并結(jié)合各種體系不同濃度的透光度曲線圖,再測(cè)試各種樣品的機(jī)械強(qiáng)度等方法篩選稀釋劑,綜合考慮后,采用牛脂胺(TA)-鄰苯二甲酸二丁酯(DBP)混合稀釋劑制備聚丙烯微孔膜。其次,在TA-DBP-PP體系中,改變混合稀釋劑中牛脂胺的質(zhì)量濃度,考察牛脂胺的濃度對(duì)膜性能的影響。隨著混合稀釋劑中TA含量的增多,聚丙烯平板膜的通量逐漸增加,聚丙烯膜的斷裂強(qiáng)度降低。然后,在TA-DBP-PP體系中,改變聚丙烯的濃度,考察聚丙烯的濃度變化對(duì)膜性能的影響。隨聚合物濃度的增加,表面孔的數(shù)量明顯減少,膜的孔徑減小。當(dāng)PP濃度為20%時(shí),膜的純水通量可達(dá)到120 L·m-2·h-1·bar-1左右,聚丙烯膜的平均孔徑是3.2μm,膜的孔隙率為61%。采用TH3988,NA-40兩種成核劑,加入2.4wt%的NA-40成核劑后,聚丙烯平板膜的孔徑較小,而且膜結(jié)構(gòu)較緊密；加入2.4wt%的成核劑TH3988的平板膜結(jié)構(gòu)較為松散。隨著凝固浴溫度的上升,聚丙烯膜的通量以及平均孔徑呈現(xiàn)出上升的趨勢(shì)。但是,膜的機(jī)械強(qiáng)度會(huì)隨著凝固浴的溫度升高而降低。在DOP凝固浴中制得的膜的通量?jī)?yōu)于在大豆油凝固浴中制得的膜的通量。
[Abstract]:In this paper, microporous polypropylene membranes were prepared by thermally induced phase separation, and the effects of various factors on the properties of the membranes were investigated. Firstly, the diluent is screened by looking up the solubility parameters, combining with the transmittance curves of different concentrations of the system, and then testing the mechanical strength of various samples, after comprehensive consideration, the diluent is selected by the method of testing the mechanical strength of various samples. Polypropylene microporous membrane was prepared by mixed diluent of tauroamine (TA) and dibutyl phthalate (DBP). Secondly, in TA-DBP-PP system, the influence of the concentration of tauroamine on the membrane performance was investigated by changing the mass concentration of tauroamine in the mixed diluent. With the increase of the content of TA in the mixed diluent, the flux of polypropylene flat-plate membrane increases gradually, and the fracture strength of polypropylene membrane decreases. Then, in the TA-DBP-PP system, the concentration of polypropylene was changed and the effect of the concentration of polypropylene on the performance of the membrane was investigated. With the increase of polymer concentration, the number of surface faces decreased and the pore size of the membrane decreased. When the concentration of PP is 20%, the pure water flux of the membrane can reach about 120L 路m-2 路h-1 路bar-1, the average pore size of the membrane is 3.2 渭 m, and the porosity of the membrane is 61%. Using two nucleating agents TH3988,NA-40, adding 2.4wt% NA- 40 nucleating agent, the pore size of polypropylene flat-plate membrane is smaller and the structure of membrane is compact, and the flat-plate membrane structure of 2.4wt% nucleating agent TH3988 is looser. With the increase of coagulation bath temperature, the flux and average pore diameter of polypropylene membrane showed an increasing trend. However, the mechanical strength of the membrane decreases with the increase in the temperature of the coagulation bath. The flux of membrane prepared in DOP coagulation bath is better than that of soybean oil coagulation bath.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TQ325.14

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孫衛(wèi)明;微孔聚丙烯中空纖維膜[J];高分子材料科學(xué)與工程;1997年04期

2 胡曉宇;梁海先;肖長(zhǎng)發(fā);;中空纖維膜制備方法研究進(jìn)展[J];高科技纖維與應(yīng)用;2009年01期

3 劉敏;許振良;李井峰;吳曉輝;;TIPS法制備聚偏氟乙烯平板微孔膜及其表征[J];功能高分子學(xué)報(bào);2009年01期

4 楊振生,常賀英,李憑力,王世昌;用擬二元方法研究iPP-DBP-DOP三元體系的熱致相分離熱力學(xué)[J];化工學(xué)報(bào);2005年06期

5 張翠蘭,王志,李憑力,王世昌;熱致相分離法制備聚丙烯微孔膜[J];膜科學(xué)與技術(shù);2000年06期

6 侯文貴,李憑力,張翠蘭,王世昌;熱致相分離制備聚丙烯微孔膜微觀結(jié)構(gòu)的研究[J];膜科學(xué)與技術(shù);2003年02期

7 李憑力;李英棟;常賀英;王世昌;劉宗余;;制膜條件對(duì)聚丙烯中空纖維微孔膜強(qiáng)度的影響研究[J];膜科學(xué)與技術(shù);2006年04期

8 劉錦東;徐軍;王曉琳;郭寶華;;鄰苯二甲酸二正烷基酯類稀釋劑的烷基長(zhǎng)度對(duì)熱致相分離制備聚丙烯微孔膜的影響[J];膜科學(xué)與技術(shù);2007年05期

9 陳剛;林亞凱;王曉琳;;混合稀釋劑對(duì)熱致相分離法制備等規(guī)聚丙烯微孔膜的影響[J];膜科學(xué)與技術(shù);2007年06期

10 駱峰,張軍,王曉琳,許仲梓;熱誘導(dǎo)相分離法制備高分子微孔膜的原理與進(jìn)展[J];南京化工大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年04期

相關(guān)會(huì)議論文 前1條

1 阮文祥;王建黎;計(jì)建炳;姚克儉;俞曉梅;;萃取劑對(duì)TIPS法制備聚乙烯中空纖維膜結(jié)構(gòu)的影響[A];2005年全國(guó)高分子學(xué)術(shù)論文報(bào)告會(huì)論文摘要集[C];2005年

相關(guān)博士學(xué)位論文 前1條

1 楊振生;熱致相分離法iPP中空纖維微孔膜及其形態(tài)結(jié)構(gòu)研究[D];天津大學(xué);2005年

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