聚磷酸铵表面疏水改性研究
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摘要
通过自制乳液吸附在聚磷酸铵(APP)表面,实现APP表面疏水改性。利用扫描电镜、傅立叶变换红外光谱仪以及接触角测量仪表征了改性前后APP的表观形貌、化学结构和疏水性能。对该吸附过程的影响因素进行了分析。结果表明:常温下,醇水比为2∶8、pH为7. 0为宜;改性聚磷酸铵(MAPP)的疏水性能与乳液吸附量相关,当吸附量达232. 0 mg/g,其接触角由改性前的8. 69°增至103. 11°,此后吸附量再增加,接触角无明显变化。
Ammonium polyphosphate( APP) surface was hydrophobically modified by adsorbing self-made polymer emulsion on the surface of APP. The morphology,chemical structure and hydrophobic properties of APP before and after modification were characterized by scanning electron microscopy,Fourier transform infrared spectroscopy and contact angle measuring instrument,respectively. The influencing factors analysis was performed on the adsorption process. The best modification result was obtained under the ratio of alcohol to water of 2∶8 and the pH of 7. 0 at room temperature. The hydrophobic properties of modified ammonium polyphosphate( MAPP) were related to the adsorption capacity of the emulsion. When the adsorption amount reached 232. 0 mg/g,the contact angle increased from 8. 69° before modification to 103. 11° after modification. The contact angle did not change significantly with further increased adsorption amount.
Ammonium polyphosphate( APP) surface was hydrophobically modified by adsorbing self-made polymer emulsion on the surface of APP. The morphology,chemical structure and hydrophobic properties of APP before and after modification were characterized by scanning electron microscopy,Fourier transform infrared spectroscopy and contact angle measuring instrument,respectively. The influencing factors analysis was performed on the adsorption process. The best modification result was obtained under the ratio of alcohol to water of 2∶8 and the pH of 7. 0 at room temperature. The hydrophobic properties of modified ammonium polyphosphate( MAPP) were related to the adsorption capacity of the emulsion. When the adsorption amount reached 232. 0 mg/g,the contact angle increased from 8. 69° before modification to 103. 11° after modification. The contact angle did not change significantly with further increased adsorption amount.
引文
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[2]张琪,刘娟,孙立婧,等. APP对硬质聚氨酯-酰亚胺泡沫泡孔结构及力学性能的影响[J].塑料,2015,44(5):7-10.
[3]杨云艳,谢德龙,梅毅,等.聚磷酸铵的改性研究进展[J].塑料工业,2018,46(5):20-24,75.
[4] Qin Z L, Li D H, Zhang W C, et al. Surface modification of ammonium polyphosphate with vinyltrimethoxysilane:Preparation,characterization,and its flame retardancy in polypropylene[J]. Polymer Degradation and Stability,2015,119:139-150.
[5]郝建薇,刘国胜,杜建新,等.聚磷酸铵表面处理及阻燃聚丙烯应用研究[J].北京理工大学学报,2009,29(6):556-559.
[6]刘建超,许苗军,李斌.聚磷酸铵的疏水改性及聚丙烯阻燃性能[J].高等学校化学学报,2015,36(6):1228-1235.
[7]冯夏明,危加丽,尹波,等.三聚氰胺-甲醛树脂微胶囊包覆聚磷酸铵阻燃PP的性能[J].合成树脂及塑料,2012,29(2):16-19.
[8]李强林,黄方千,蒋学军,等.有机微胶囊化聚磷酸铵的制备和性能[J].印染助剂,2015,32(4):19-22.
[9]韩悦,李姣,刘娟,等.微胶囊化聚磷酸铵的制备及其性能[J].工程塑料应用,2016,44(10):116-119,152.
[10]靳晓雨,全国强,赵念,等.微胶囊化聚磷酸铵阻燃导热EP灌封胶的制备[J].中国胶粘剂,2017,26(10):30-34.