CN104233812B - 一种具有杀菌消毒促进愈合作用的医用棉布的制备方法 - Google Patents

一种具有杀菌消毒促进愈合作用的医用棉布的制备方法 Download PDF

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CN104233812B
CN104233812B CN201410477463.7A CN201410477463A CN104233812B CN 104233812 B CN104233812 B CN 104233812B CN 201410477463 A CN201410477463 A CN 201410477463A CN 104233812 B CN104233812 B CN 104233812B
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Abstract

本发明公开一种具有杀菌消毒促进愈合作用的医用棉布的制备方法,包括以下步骤:a、制备PU预聚体:将N210、N303投入到四口烧杯中,升温至100℃,抽真空1~2h,然后降温至45℃,加入MDI搅拌,缓慢升温75℃并保温1.5h,再降温至室温出料,则得到PU预聚体;b、将纳米级银、氧化锌、电气石、萤石粉末按等质量比混合,以无水乙醇为介质,添加偶联剂,搅拌后烘干,则得到功能性纳米粒子;c、将功能性纳米粒子融入1~4份丁二醇扩链剂中,20℃下与PU预聚体搅拌均匀,然后放入棉布浸泡3~5分钟,取出后晾干,固化后在棉布的纤维表面形成一层透明的涂层,具有杀菌止痒、促进愈合作用。

Description

一种具有杀菌消毒促进愈合作用的医用棉布的制备方法
技术领域
本发明涉及高分子医用产品技术领域,具体为一种具有杀菌消毒促进愈合作用的医用棉布的制备方法。
背景技术
目前,在医疗卫生等方面广泛使用的无菌纱布自身并不具有杀菌消毒促进愈合的功能,长时间在受创处与皮肤接触,其温度、湿度均非常有利于细菌的滋生,进而二次感染伤口,不能起到有效的保护作用;专利号:CN1506026A公布了一种抗菌抗过敏医用纱布,具体是把石英、电石气、晶体铌酸锂等粉末粒子加入到纤维原料中,织成功能纤维。虽然具有一定的抗菌消毒作用,但该工艺的缺点也很突出,如加工工艺难度大、能耗高、杀菌强度不明显等,不利于大范围的推广使用;专利号:CN2766851Y公布了一种多层杀菌棉布的制造方法,将具有杀菌药物的水溶液浸泡棉布材料,去除烘干,多层叠加而成,由于采用的是无机碱、盐等,制备过程中存在大量污水,不利于环境保护,且在使用过程中必须与外界水、湿气等接触进行化学反应才能实现其预定功能,不仅影响患处周围的健康人体组织,在化学反应结束后药效也同时失去,无法持续释放药效。
发明内容
针对上述技术问题,本发明公开一种具有杀菌消毒促进愈合作用的医用棉布的制备方法,包括以下步骤:a、制备低粘度、高粘结强度、无溶剂型的PU预聚体:将N210、N303投入到四口烧杯中,升温至100℃,抽真空1~2h,然后降温至45℃,加入MDI搅拌,缓慢升温75℃并保温1.5h,再降温至室温出料,则得到低粘度、高粘结强度、无溶剂型的PU预聚体;b、将纳米级银、氧化锌、电气石、萤石粉末按等质量比混合,粒径大小介于200~500纳米,以无水乙醇为介质,添加5~10%的偶联剂,在70℃条件下搅拌3~4h,80℃烘干,则得到功能性纳米粒子;c、将功能性纳米粒子融入1~4份丁二醇扩链剂中,20℃下与PU预聚体搅拌均匀,然后放入棉布浸泡3~5分钟,取出后晾干,固化后在棉布的纤维表面形成一层透明的涂层,具有杀菌止痒、促进愈合作用。
本发明的有益效果是通过将具有杀菌消毒促进伤口愈合作用的药物以纳米技术形成微胶囊,混合于高性能树脂中,固定在无菌纱布表面,制成具有杀菌消毒促进愈合作用的医用棉布;且所述制备方法全程零污染,成本低廉、制备工艺简单,可操作性强,适宜大范围推广。
具体实施方式
下面对本发明做进一步的详细说明,以令本领域技术人员参照说明书文字能够据以实施。
本发明公开一种具有杀菌消毒促进愈合作用的医用棉布的制备方法,包括以下步骤:a、制备低粘度、高粘结强度、无溶剂型的PU预聚体:将N210、N303投入到四口烧杯中,升温至100℃,抽真空1~2h,然后降温至45℃,加入MDI搅拌,缓慢升温75℃并保温1.5h,再降温至室温出料,则得到低粘度、高粘结强度、无溶剂型的PU预聚体;b、将纳米级银、氧化锌、电气石、萤石粉末按等质量比混合,粒径大小介于200~500纳米,以无水乙醇为介质,添加5~10%的偶联剂,在70℃条件下搅拌3~4h,80℃烘干,则得到功能性纳米粒子;c、将功能性纳米粒子融入1~4份丁二醇扩链剂中,20℃下与PU预聚体搅拌均匀,然后放入棉布浸泡3~5分钟,取出后晾干,功能粒子表面因为接枝功能性基团,而与PU预聚体长分子链原位聚合,固化后在棉布的纤维表面形成一层透明的涂层,具有杀菌止痒、促进愈合作用,所述涂层的厚度为微米级,从而制成具有长效杀菌止血、促进愈合的功能性医用棉布。
下面具体讲述本发明所述的具有杀菌消毒促进愈合作用的医用棉布的制备方法。
实施例1:
将N210、N303、N304共35份投入到四口烧杯中,升温至100℃,抽真空1~2h,降温至45℃,加入MDI及HDI共65份并搅拌,缓慢升温75℃保温1.5h,降温至室温出料,得到低粘度、高粘结强度、无溶剂型的PU预聚体;将纳米级银、氧化锌、电气石、萤石粉末按等质量比混合,其粒径范围在200~500纳米,以无水乙醇为介质,添加5~10%的偶联剂KH590,在70℃搅拌3~4h,80℃烘干成为功能性纳米粒子,待用;将功能性纳米粒子质量5~10份混入7~10份的1~4丁二醇等扩链剂中,20℃下与预聚体搅拌均匀,接着将棉布放入其中浸泡3~5分钟,取出后晾干,功能粒子表面存在接枝功能性基团,而与PU预聚体长分子链原位聚合,固化后在棉布纤维表面形成一层透明具有杀菌止痒、促进愈合,厚度为微米级的涂层,从而制成具有长效杀菌止血、促进愈合的功能性医用棉布。
实施例2:
将N210、N330共30份投入到四口烧杯中,升温至100℃,抽真空1~2h,降温至45℃,加入TDI和HDI共60份并搅拌,缓慢升温75℃保温1.5h,降温至室温出料,得目标产物低粘度、高粘结强度PU预聚体。将纳米级铜、氧化锌、电气石粉末按质量比2:1:1混合,其粒径范围在200~500纳米,以无水乙醇为介质,添加5~10%的KH550偶联剂,在70℃搅拌2~3h,80℃烘干成为功能性纳米粒子,待用。将功能性纳米粒子质量8~12份混入5~7份的甘油扩链剂中,20℃下与预聚体搅拌均匀,接着将棉布放入其中浸泡3~5分钟,取出后晾干,功能粒子表面存在接枝功能性基团,而与PU预聚体长分子链原位聚合,固化后在棉布纤维表面形成一层透明具有杀菌止痒、促进愈合,厚度为微米级的涂层,从而制成具有长效杀菌止血、促进愈合的功能性医用棉布。
实施例3:
将N210、蓖麻油多元醇共28份投入到四口烧杯中,升温至110℃,抽真空1~2h,降温至40℃以下,加入MDI和TDI三聚体共64份并搅拌,缓慢升温85℃保温2.5h,降温至室温出料,得目标产物低粘度、高粘结强度PU预聚体。将纳米级铜、锌、萤石、铌酸锂粉末按质量比2:2:1:2混合,其粒径范围在200~500纳米,以无水乙醇为介质,添加5~10%的KH570偶联剂,在70℃搅拌2~3h,80℃烘干成为功能性纳米粒子,待用。将功能性纳米粒子质量8~15份混入5~7份的三乙醇胺扩链剂中,20℃下与预聚体搅拌均匀,接着将棉布放入其中浸泡3~5分钟,取出后晾干,功能粒子表面存在接枝功能性基团,而与PU预聚体长分子链原位聚合,固化后在棉布纤维表面形成一层透明具有杀菌止痒、促进愈合,厚度为微米级的涂层,从而制成具有长效杀菌止血、促进愈合的功能性医用棉布。
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用,它完全可以被适用于各种适合本发明的领域,对于熟悉本领域的人员而言,可容易地实现另外的修改,因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节和这里示出与描述的实施例。

Claims (1)

1.一种具有杀菌消毒促进愈合作用的医用棉布的制备方法,其特征在于,包括以下步骤:
a、制备PU预聚体:将N210、N303投入到四口烧杯中,升温至100℃,抽真空1~2h,然后降温至45℃,加入MDI搅拌,缓慢升温75℃并保温1.5h,再降温至室温出料,则得到低粘度、高粘结强度、无溶剂型的PU预聚体;
b、将纳米级银、氧化锌、电气石、萤石粉末按等质量比混合,粒径大小介于200~500纳米,以无水乙醇为介质,添加5~10%的偶联剂,在70℃条件下搅拌3~4h,80℃烘干,则得到功能性纳米粒子;
c、将功能性纳米粒子融入1~4份丁二醇扩链剂中,20℃下与PU预聚体搅拌均匀,然后放入棉布浸泡3~5分钟,取出后晾干,固化后在棉布的纤维表面形成一层透明的涂层,具有杀菌止痒、促进愈合作用。
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