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G(f)/HA-CS復(fù)合材料的制備及性能研究
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陜西省自然科學(xué)基金；教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃(NCET-06-0893)；深圳市特種功能材料重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金(0701)


Preparation and Properties of G(f)/HA-CS Composites
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    摘要:

    以羥基磷灰石-殼聚糖(HA-CS)為基體，玻璃纖維G(f)為增強(qiáng)相，采用原位雜化法制備短玻璃纖維增強(qiáng)HA-CS基生物復(fù)合材料。研究交聯(lián)劑、羥基磷灰石含量和玻璃纖維含量對(duì)復(fù)合材料性能的影響。采用紅外吸收光譜、掃描電子顯微鏡和萬(wàn)能材料試驗(yàn)機(jī)對(duì)材料的結(jié)構(gòu)和性能進(jìn)行表征。結(jié)果表明：原位雜化法能制備性能較好的復(fù)合材料；用戊二醛交聯(lián)改性復(fù)合材料可以明顯增加其韌性和彎曲強(qiáng)度，使復(fù)合材料抗彎曲強(qiáng)度提高16%；當(dāng)CS/HA=10/1(質(zhì)量比)和玻璃纖維含量為1.5%時(shí)復(fù)合材料抗折強(qiáng)度達(dá)到極大值84.47 MPa；隨玻璃纖維含量的增加，復(fù)合材料的斷裂面由平整向多層斷裂變化，材料的韌性有所提高

    Abstract:

    Glass fiber reinforced chitosan-hydroxyapatite (HA-CS) composites (G(f)/HA-CS) were prepared by a in-situ precipitation process. The infulences of the cross linker, HA mass fraction and fiber mass fraction on the structure and flexural strength of the composites were investigated. The structures and properties of the as-prepared composites were characterized by IR, SEM and universal test machine. The results show that the composites with good performances can be obtained by employing the in-situ hybrid process; the toughness of the composites modified by glutaric dialdehyde cross-linking can be remarkably increased, and their flexural strength can be improved by 16% to an optimum value of 84.47 MPa when the monomer ratio (CS/HA) reaches 10/1 and the fiber mass fraction reaches 1.5%. With the increase of glass fiber mass fraction, the microstructure of fractured surfaces changes from smooth to crapy. It can be infered that the toughness of the composites is improved

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沈基顯,黃劍鋒,曹麗云,曾燮榕,熊信柏. G(f)/HA-CS復(fù)合材料的制備及性能研究[J].稀有金屬材料與工程,2009,38(9):1642~1645.[Shen Jixian, Huang Jianfeng, Cao Liyun, Zeng Xierong, Xiong Xinbo. Preparation and Properties of G(f)/HA-CS Composites[J]. Rare Metal Materials and Engineering,2009,38(9):1642~1645.]
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  • 收稿日期:2008-10-06
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