超细碳酸钙原位改性苎麻纤维的工艺优化
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摘要
采用离子溶液原位沉积法将超细碳酸钙沉积于苎麻纤维表面,探究了反应温度、离子溶液浓度、反应时间、分散剂EDTA-2Na用量对制备超细碳酸钙改性苎麻纤维的工艺影响,并对改性纤维表面结构和性质进行表征。结果表明,碱性前处理对纤维造成了损伤,提高了改性纤维表面碳酸钙的附着量,经过改性处理后的苎麻纤维表面粗糙度增加;正交试验后的优化工艺为:温度为40℃,离子溶液浓度为0.5mol/L,分散剂EDTA-2Na用量为4g/L。
In order to improve interfacial property between ramie fiber and resin matrix,ultrafine calcium carbonate was deposited in-situ on ramie fiber surface to realize the modification of the surface.Reaction temperature and time,ionic solution concentration,and dosage of dispersant EDTA-2 Na were taken into account in the investigation of the preparation process of superfine calcium carbonate modified ramie fiber.The surface structure and properties of the modified fiber were then characterized accordingly.The results show that the pretreatment of alkali has damaged the fiber but also increased the adhesion of calcium carbonate on the surface of modified fiber.The surface roughness of ramie fiber was increased after modified treatment.Orthogonal test determined the optimization conditions for the modification,which are:reaction time of 30 min,reaction temperature of 40℃,ionic solution concentration of 0.5 mol/l,dispersant EDTA-2Na dosage of 4g/L.
In order to improve interfacial property between ramie fiber and resin matrix,ultrafine calcium carbonate was deposited in-situ on ramie fiber surface to realize the modification of the surface.Reaction temperature and time,ionic solution concentration,and dosage of dispersant EDTA-2 Na were taken into account in the investigation of the preparation process of superfine calcium carbonate modified ramie fiber.The surface structure and properties of the modified fiber were then characterized accordingly.The results show that the pretreatment of alkali has damaged the fiber but also increased the adhesion of calcium carbonate on the surface of modified fiber.The surface roughness of ramie fiber was increased after modified treatment.Orthogonal test determined the optimization conditions for the modification,which are:reaction time of 30 min,reaction temperature of 40℃,ionic solution concentration of 0.5 mol/l,dispersant EDTA-2Na dosage of 4g/L.
引文
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[2]Sun F,Lu X,Yu Y.Preparation of Ultrafine Calcium Carbonate-filled Powdered Styrene-butadiene Rubber[J].China Synthetic Rubber Industry,2001,36(5):175~177.
[3]Wang C,Xian Y,Cheng H,et al.Tensile Properties of Bamboo Fiber-reinforced Polypropylene Composites Modified by Impregnation with Calcium Carbonate Nanoparticles[J].Bioresources,2015,10(4):249~253.
[4]石义刚,万朝雨,周扬,等.细小纤维对PCC预絮聚技术影响研究[J].湖北工业大学学报,2013,28(4):3~5,23.
[5]袁佳炜.高灰分纸张的纤维充填新工艺研究[D].南京:南京林业大学,2008.
[6]温洋兵,李超.细胞腔加填碳酸钙技术[J].国际造纸,2009,28(2):1~6.
[7]李文燕,张双保,任文涵,等.不同改性方法对竹塑复合材料拉伸性能的影响[J].南京林业大学学报(自然科学版),2014(3):35~40.
[8]高洁,王戈,程海涛,等.制备温度对碳酸钙改性竹纤维性能的影响[C].第四届全国生物质材料科学与技术学术研讨会,长沙,2011(9).第四届全国生物质材料科学与技术学术研讨会论文集,中国林学会生物质材料科学分会,2012:46~50.
[9]高洁.纳米碳酸钙原位改性竹纤维及其复合材料性能研究[D].北京:中国林业科学研究院,2012.
[10]冯春,陈港.制备温度对碳酸钙-细小纤维复合填料性能的影响[J].造纸科学与技术,2010,29(1):33~37.
[11]造纸原料、纸浆、纸和纸板灰分的测定[S].GB/T 742-2008.
[12]化学纤维.短纤维拉伸性能试验方法[S].GB/T 14337-2008.
[13]纤维增强塑料拉伸性能试验方法[S].GB/T 1447-2005.
[14]刘瑞江,张业旺,闻崇炜,等.正交试验设计和分析方法研究[J].实验技术与管理,2010,27(9):52-55.
[15]Kontoyannis CG,Vagenas NV.Calcium CarbonatePhase Analysis using XRD and FT-Raman Spectroscopy[J].Analyst,2000,125(2):251~255.
[16]冯春,陈港.制备温度对碳酸钙-细小纤维复合填料性能的影响[J].造纸科学与技术,2010,29(1):33~37.