CN114683583A - 一种缠绕型碳纤维管及其加工工艺 - Google Patents
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Abstract
本发明公开了一种缠绕型碳纤维管及其加工工艺,缠绕型碳纤维管包括由碳纤维复合材料经湿法缠绕在管道骨架上的预浸带,预浸带包括碳纤维织物和预浸浆料,所述预浸浆料的组分包括:环氧树脂100重量份、固化剂30‑40重量份、氨基封端聚硅氧烷10‑20重量份、氧化石墨烯0.5‑1重量份和羧基化碳纳米管0.5‑1重量份,本申请所述缠绕型碳纤维管利用氨基封端聚硅氧烷将氧化石墨烯和羧基化碳纳米管均匀的分散在环氧树脂基体中,保证预浸浆料的分散稳定性,提高固化后的碳纤维管材的力学性能。
Description
技术领域
本发明涉及高分子化合物技术领域,特别涉及一种缠绕型碳纤维管及其加工工艺。
背景技术
环氧树脂具有优良的机械性能,卓越的粘接性能与良好的成型加工性能,因而在国民经济的许多领域得到了广泛的应用。然而,由于环氧树脂交联密度高,脆性大,抗开裂、抗冲击性能差,限制了它的应用。
通常石墨烯作为纳米填料复配到环氧树脂基体中,适当添加可有效改善环氧树脂的热性能、电性能和力学性能。但是现有的实际生产过程中的复合过程还存在着诸多问题,现有技术通常通过共混法复合石墨烯与环氧树脂,石墨烯以直接共混的方式在环氧树脂基体中分散性不好,且石墨烯易发生团聚。而溶液共混法石墨烯也难以充分均匀地分散,由于石墨烯强烈的吸附作用,溶剂难以去除干净。两种方式都会在环氧树脂固化后引入缺陷,影响石墨烯的增强效果,进而导致石墨烯环氧树脂复合材料的性能还不够理想,不能达到各领域的应用要求,限制了复合材料的推广和发展。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此,本发明提出一种可性能优异的缠绕型碳纤维管,采用的技术方案为:
一种缠绕型碳纤维管,包括由碳纤维复合材料经湿法缠绕在管道骨架上的预浸带,其特征在于,预浸带包括碳纤维织物和预浸浆料,所述预浸浆料的组分包括:
具体的,所述环氧树脂为双酚A型环氧树脂。
具体的,所述氨基封端聚硅氧烷为氨丙基封端聚二甲基硅氧烷。
本发明还提出缠绕型碳纤维管的加工工艺,包括以下步骤:
步骤1、获取100重量份的环氧树脂、30-40重量份的固化剂、10-20重量份的氨基封端聚硅氧烷、0.5-1重量份的羧基化碳纳米管和0.5-1重量份的氧化石墨烯;
步骤2、将环氧树脂、固化剂和氨基封端聚硅氧烷混合后,再加入羧基化碳纳米管和氧化石墨烯并混合均匀后,搅拌并超声反应2-5h后,进行真空脱泡,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,将碳纤维丝束浸入预浸浆料中,浸胶完成后通过一个刮胶辊去除多余的树脂胶液;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,形成预浸布,将预浸布取下,烘干后得到缠绕型碳纤维管。
作为优选,所述步骤3中浸胶时间为8-15s,丝束张力为160-200克。
本发明的有益效果:
具有氨基封端的聚硅氧烷与环氧树脂之间具有良好的相容性,以使具有聚硅氧烷的氨基与环氧树脂的环氧基进行反应,使得氨基封端的聚硅氧烷在环氧树脂中具有优异的分散稳定性,且聚硅氧烷具有卓越的柔软性,能有效改善环氧树脂的性能;
同时羧基化碳纳米管能与聚硅氧烷的氨基反应生成酰胺基团,并利用聚硅氧烷的氨基与氧化石墨烯的氢键产生键和,从而将氧化石墨烯和羧基化碳纳米管接枝在环氧树脂上,且在聚硅氧烷与环氧树脂之间具有良好的相容性的前提下,最大程度的发挥石墨烯对碳纤维管材的增强作用,实现氧化石墨烯和羧基化碳纳米管在环氧树脂中充分均匀的分散,避免石墨烯团聚,保证预浸浆料的分散稳定性,能提高固化后的碳纤维管材的模量和韧性;
且石墨烯和碳纳米管与环氧树脂进行复配之后,能有效增强碳纤维管材的力学性能和耐热性能。
具体实施方式
根据上述内容,本部分将详细描述本发明的具体实施例如下。
本申请实施例中环氧树脂为E-44双酚A型环氧树脂;固化剂为MeTHPA;氧化石墨烯购自苏州碳丰石墨烯科技有限公司的单层氧化石墨烯;羧基化碳纳米管采购自上海麦克林生化科技有限公司的CAS编号为308068-56-6的羧基化多壁碳纳米管。
本申请实施例中氨基封端聚硅氧烷采用以下方法自制获得,氨基封端聚硅氧烷的制作工艺具体包括:以八甲基环四硅氧烷、四甲基氢氧化铵、1,3二(氨基丙基)四甲基二硅氧烷和二甲亚砜在氮气保护下在90℃反应3h后,升温至140℃并反应1h后,减压蒸馏后获得氨基封端聚硅氧烷。
本申请实施例中,预浸带按照重量百分比包括60%-70%的碳纤维织物和30%-40%的预浸浆料。
基于上述内容,提出本申请的具体实施例如下。
实施例1
步骤1、取50g的双酚A型环氧树脂、15g的固化剂MeTHPA、5g的氨丙基封端聚二甲基硅氧烷、0.25g的羧基化碳纳米管和0.25g的氧化石墨烯;
步骤2、将50g双酚A型环氧树脂、15g的固化剂MeTHPA和5g的氨丙基封端聚二甲基硅氧烷混合后,加入0.25g的羧基化碳纳米管和0.25g的氧化石墨烯,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度4根/cm,共2层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
实施例2
步骤1、获取50g的双酚A型环氧树脂、18g的固化剂MeTHPA、8g的氨丙基封端聚二甲基硅氧烷、0.4g的羧基化碳纳米管和0.4g的氧化石墨烯;
步骤2、将50g的双酚A型环氧树脂、18g的固化剂MeTHPA和8g的氨丙基封端聚二甲基硅氧烷,加入0.4g的羧基化碳纳米管和0.4g的氧化石墨烯,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度3根/cm,共2层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
实施例3
步骤1、获取50g的双酚A型环氧树脂、20g的固化剂MeTHPA、10g的氨丙基封端聚二甲基硅氧烷、0.5g的羧基化碳纳米管和0.5g的氧化石墨烯;
步骤2、将50g的双酚A型环氧树脂、20g的固化剂MeTHPA和10g的氨丙基封端聚二甲基硅氧烷混合后,加入0.5g的羧基化碳纳米管和0.5g的氧化石墨烯,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度3根/cm,共2层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
对比例1
步骤1、获取50g的双酚A型环氧树脂、18g的固化剂MeTHPA和8g的氨丙基封端聚二甲基硅氧烷;
步骤2、将50g的双酚A型环氧树脂、18g的固化剂MeTHPA和8g的氨丙基封端聚二甲基硅氧烷,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度3根/cm,共2层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
对比例2
步骤1、获取50g的双酚A型环氧树脂、18g的固化剂MeTHPA、8g的氨丙基封端聚二甲基硅氧烷和0.4g的羧基化碳纳米管;
步骤2、将50g的双酚A型环氧树脂、18g的固化剂MeTHPA和8g的氨丙基封端聚二甲基硅氧烷,加入0.4g的羧基化碳纳米管,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度3根/cm,共2层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
对比例3
步骤1、获取50g的双酚A型环氧树脂、18g的固化剂MeTHPA、0.4g的羧基化碳纳米管和0.4g的氧化石墨烯;
步骤2、将50g的双酚A型环氧树脂和18g的固化剂MeTHPA,加入0.4g的羧基化碳纳米管和0.4g的氧化石墨烯,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度3根/cm,共2层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
对比例4
步骤1、获取50g的双酚A型环氧树脂、18g的固化剂MeTHPA、0.4g的碳纳米管和0.4g石墨烯;
步骤2、将50g的双酚A型环氧树脂和18g的固化剂MeTHPA,加入0.4g的羧基化碳纳米管和0.4g的氧化石墨烯,机械搅拌并超声反应4-6h后,放入温度为50℃的真空烘箱脱泡1h,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,控制工作功率在150W;将碳纤维丝束浸入预浸浆料中,控制浸胶时间为10s,丝束张力为180克,浸胶完成后通过一个刮胶辊去除多余的预浸浆料;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,使用威海拓展T300(3k)碳纤维浸胶后通过排丝机采用缠绕的方式排丝,经纱密度5根/cm、纬纱密度3根/cm,共3层,每层厚度0.15mm,共计反复缠绕2层,形成预浸布,将预浸布取下,在60℃真空条件下烘干10h,接着在120℃下烘干5h后得到外径20mm壁厚1mm的缠绕型碳纤维管。
将实施例1-3和对比例1-4中得到的缠绕型碳纤维管采用金刚石刀具切割至测试标准所需要的尺寸,按照《GB/T1447-2005》标准测试缠绕型碳纤维管的拉伸强度,按照《JC/T773-2010》标准测试缠绕型碳纤维管的层间剪切强度,测试结果如表1所示。
表1
根据上述试验结果可知,实施例1-3中的缠绕型碳纤维管的力学性能均优于对比例1-4中的缠绕型碳纤维管的力学性能。
当然,本发明并不局限于上述实施方式,熟悉本领域的技术人员在不违背本发明精神的前提下还可作出等同变形或替换,这些等同的变形和替换均包含在本申请权利要求所限定的范围内。
Claims (5)
2.根据权利要求1所述的缠绕型碳纤维管,其特征在于,所述环氧树脂为双酚A型环氧树脂。
3.根据权利要求1所述的缠绕型碳纤维管,其特征在于,所述氨基封端聚硅氧烷为氨丙基封端聚二甲基硅氧烷。
4.一种缠绕型碳纤维管的加工工艺,其特征在于,包括以下步骤:
步骤1、获取100重量份的环氧树脂、30-40重量份的固化剂、10-20重量份的氨基封端聚硅氧烷、0.5-1重量份的羧基化碳纳米管和0.5-1重量份的氧化石墨烯;
步骤2、将环氧树脂、固化剂和氨基封端聚硅氧烷混合后,再加入羧基化碳纳米管和氧化石墨烯并混合均匀后,搅拌并超声反应2-5h后,进行真空脱泡,得到预浸浆料;
步骤3、将预浸浆料倒入浸胶槽中,并在浸胶槽中放置超声波发生器,将碳纤维丝束浸入预浸浆料中,浸胶完成后通过一个刮胶辊去除多余的树脂胶液;
步骤4:浸胶后的碳纤维丝束通过排丝机采用缠绕的方式排丝后在模具上反复缠绕,形成预浸布,将预浸布取下,烘干后得到缠绕型碳纤维管。
5.根据权利要求4所述的缠绕型碳纤维管的加工工艺,其特征在于,所述步骤3中浸胶时间为8-15s,丝束张力为160-200克。
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