CN105196674A - 一种柔性防弹层合板的制备方法 - Google Patents
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Abstract
本发明公开了一种柔性防弹层合板的制备方法,以两种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺制备复合纱线,设计高性能纤维纱与复合纱线的交织规格及织造工艺试制二维织物为预制件,将2层以上预制件重叠以热压工艺使得织物层合,制得柔性防弹层合板。本发明的制备方法工艺简单,成本较低,所制得的柔性防弹层合板柔软质轻,且在高速冲击下不易分层,能有效吸收子弹的冲击能量。
Description
技术领域
本发明涉及一种层合板的制备方法,尤其涉及一种柔性防弹层合板的制备方法。
背景技术
目前有关防弹复合材料的研究大多采用二维层合板。二维层合工艺相对简易,但其复合材料在受到高速冲击时容易产生分层,降低防弹效果。层合工艺可采用粘合、缝合等,粘合以热塑性薄膜使得层层连接,但部分粘合性弱的复合材料在高速冲击下,依旧容易分层;缝合能够降低材料中的分层损伤,但不能提高材料冲击面的压缩强度,材料的吸收能量却无显著提高,故缝合也不能从本质上改变材料的损伤特征。而在织造高性能纤维二维织物中设计交织熔点较低的纱线,经热压后制备的层合板,可以有效降低材料分层损失,但经课题组研究发现,直接交织的低熔点纱线经热压融化后,融化部位脆性较大、强度较低,作为冲击点防弹效果较弱。因而选择合适的纱线组合及其复合工艺,设计织造参数,探索热压工艺,制备柔性防弹层合板,可以抑制材料分层,提高层合板的防弹效果。
发明内容
本发明目的在于提供一种柔性防弹层合板的制备方法,利用纱线组合及其复合工艺、织造工艺及热压工艺,得到一种柔性防弹层合板,该制备方法简化了层合板制备工艺,降低制备成本,同时加强材料层间结合,有效降低材料分层损失,提高防弹性能。
本发明为了解决其技术问题所采用的技术方案是:
一种柔性防弹层合板的制备方法,以两种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺制备复合纱线,设计高性能纤维纱与复合纱线的交织规格及织造工艺试制二维织物为预制件,将2层以上预制件重叠以热压工艺使得织物层合,制得柔性防弹层合板。
所述两种不同熔点的高性能纤维纱采用一种线密度为80tex~160tex高性能纤维纱为主要原料;另一种线密度为30tex~60tex且熔点较低的高性能纤维纱为辅助原料。
所述的主要原料优选采用线密度为122tex且熔点大于300℃的芳纶、线密度为111tex且熔点大于300℃的芳纶、线密度为122tex且熔点680℃的玻璃纤维纱中的一种或两种;所述的辅助原料优选采用线密度为67tex且熔点为154℃的高强聚乙烯纤维纱、以线密度为33.3tex且熔点为180℃的丙纶、以线密度为67tex且熔点为154℃的高强聚乙烯纤维纱中的一种。
所述纱线复合工艺是:以线密度较大熔点高的高性能纤维纱作为芯纱,以线密度较小熔点低的高性能纤维纱作为外包纱,采用包缠或网络工艺制备复合纱线,其中作为芯纱的高性能纤维纱体积含量应控制在60%~80%。
所述交织规格为:在高性能纤维纱织物织造过程中,以高性能纤维纱作为经纬纱,经向或纬向或经纬向间隔性嵌入复合纱线,所述经向或纬向或经纬向间隔在2cm~20cm范围内,所述嵌入复合纱线的宽度控制在2mm~10mm。
所述织造工艺为:首先设计织物组织为平纹、斜纹、缎纹或纱罗组织,绘制上机图,输入微软***织物设计CAD软件,(购于天津隆达机电科技发展有限公司);然后根据纱线细度设计上机经纬密,控制织物紧度大于等于100%;设计织物幅宽为10cm~35cm;再根据上机经纬密、织物幅宽计算整经根数,交织规格为经向嵌入复合纱线的织物仅在整经过程中间隔加入复合纱线;纬向嵌入复合纱线的织物仅在织造过程中加入复合纱线打纬;经纬向嵌入复合纱线的织物是在整经过程中间隔加入复合纱线及在织造过程中加入复合纱线打纬;其中所述的经向嵌入复合纱线具体为整经时每段间隔加入复合纱线根数;然后选择综框、综筘进行穿综、穿筘;所述的纬向嵌入复合纱线具体为在织造中对于纬向或经纬向嵌入复合纱线的织物需要间隔性更换纬纱为复合纱线。
所述经向或纬向或经纬向间隔优选在5cm~10cm;所述嵌入复合纱线的宽度优选控制在4mm~5mm。
所述2层以上预制件重叠是根据警用防弹衣技术标准或军用防弹衣技术标准选择层合板厚度,计算预制件重叠层数,依次铺于热压模具中。
所述的重叠层数优选为10-20层。
所述热压工艺根据低熔点高性能纤维纱的熔点特性选择热压温度,热压温度为150℃~200℃,热压时间为20min~60min,热压压力为2MPa~10MPa。
所述织物层合是指经热压后各层织物中低熔点高性能纤维纱融化,融化后的纤维在厚度方向上将各层织物连接,经向嵌入复合纱线织物经热压后得到经向柔性层合板,纬向嵌入复合纱线织物经热压后得到纬向柔性层合板,经纬向嵌入复合纱线织物经热压后得到经纬向柔性层合板。
本发明的有益效果是:本发明的一种柔性防弹层合板的制备方法,以两种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺,利用熔点差异及热压工艺可以有效加强织物层间结合;设计高性能纤维纱与复合纱线的交织规格,改变经向、纬向或经纬向嵌入复合纱线的间距,可以改变层合板的连接结构,改变材料防弹性能;根据织造工艺试制二维织物为预制件,选择合理的经纬密,控制织物紧度,可以提高织物强度,消弱外界的冲击力量;将多个预制件重叠以热压工艺使得织物层合,可自由调整柔性防弹层合板的厚度;热压工艺控制热压温度、时间、压力,控制低熔点高性能纤维纱融化程度,从而控制层合板各层织物间的连接程度,制得具有厚度的柔性防弹层合板。该制备方法工艺简单,成本较低,所制得的柔性防弹层合板柔软质轻,且在高速冲击下不易分层,能有效吸收子弹的冲击能量。
具体实施方式
实施例1
本实施例的一种柔性防弹层合板的制备方法,以线密度为122tex且熔点大于300℃的芳纶(K129,购于杜邦公司)为主要原料,以线密度为67tex且熔点为154℃的高强聚乙烯纤维纱(购于宁波大成新材料股份有限公司)为辅助原料;选择芳纶作为芯纱,高强聚乙烯纤维纱作为外包纱,通过包缠工艺制备芳纶/高强聚乙烯纤维复合纱线;设计织物组织为平纹,绘制上机图,输入微软***织物设计CAD软件,(购于天津隆达机电科技发展有限公司)中,上机经纬密设置为10根/cm,幅宽25cm;本实施例芳纶与芳纶/高强聚乙烯纤维复合纱线的交织规格为经向嵌入芳纶/高强聚乙烯纤维复合纱线的织物仅在整经过程中间隔加入芳纶/高强聚乙烯纤维复合纱线;即经纱为芳纶且在整经时每段间隔加入芳纶/高强聚乙烯纤维复合纱线根数,纬纱均为芳纶;在经向以每5cm的间距嵌入宽度为0.4cm的芳纶/高强聚乙烯纤维复合纱线,即整经过程中每隔50根芳纶加入4根芳纶/高强聚乙烯纤维复合纱线,选择4片综框、10号筘进行穿综、穿筘,在剑杆织机上以芳纶为纬纱进行引纬、打纬,制得二维织物为预制件;将20个预制件重叠在模具中,并将模具置于XLB25-L平板硫化机中进行热压使得织物层合,其中热压工艺设置热压温度为160℃,热压时间为20min,热压压力为7MPa,控制高强聚乙烯纤维纱融化程度,将各层织物有效连接,且保持织物具备的柔软性,制得一种具有厚度的柔性防弹层合板。
本实施例的一种柔性防弹层合板的制备方法,以两种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺,利用熔点差异及热压工艺可以有效加强织物层间结合;设计高性能纤维纱与复合纱线的交织规格,改变经向、纬向或经纬向嵌入复合纱线的间距,可以改变层合板的连接结构,改变材料防弹性能;根据织造工艺试制二维织物为预制件,选择合理的经纬密,控制织物紧度,可以提高织物强度,消弱外界的冲击力量;将多个预制件重叠以热压工艺使得织物层合,可自由调整柔性防弹层合板的厚度;热压工艺控制热压温度、时间、压力,控制低熔点高性能纤维纱融化程度,从而控制层合板各层织物间的连接程度,制得具有厚度的柔性防弹层合板。该制备方法工艺简单,成本较低,所制得的柔性防弹层合板柔软质轻,且在高速冲击下不易分层,能有效吸收子弹的冲击能量。
实施例2
本实施例的一种柔性防弹层合板及其制备方法,以线密度为111tex且熔点大于300℃的芳纶(K129,购于杜邦公司)为主要原料,以线密度为33.3tex且熔点为180℃的丙纶(购于绍兴超特合纤有限公司)为辅助原料;选择芳纶作为芯纱,丙纶作为外包纱,通过网络工艺制备芳纶/丙纶复合纱线;设计织物组织为纱罗组织,绘制上机图,输入微软***织物设计CAD软件,(购于天津隆达机电科技发展有限公司)中,上机经纬密设置为10根/cm,幅宽30cm;本实施例芳纶与芳纶/丙纶复合纱线的交织规格为纬向嵌入芳纶/丙纶复合纱线的织物仅在织造过程中加入芳纶/丙纶复合纱线打纬;即经纱为芳纶,纬纱为芳纶,且在织造中对于纬向嵌入芳纶/丙纶复合纱线的织物需要间隔性更换纬纱为芳纶/丙纶复合纱线;在纬向以每10cm的间距嵌入宽度为0.5cm的芳纶/丙纶复合纱线,即整经经纱均为芳纶,选择6片综框、10号筘进行穿综、穿筘,在剑杆织机上进行引纬、打纬,纬纱为每隔100根芳纶加入5根芳纶/丙纶复合纱线,制得二维织物为预制件;将25个预制件重叠在模具中,并将模具置于XLB25-L平板硫化机中进行热压使得织物层合,其中热压工艺设置热压温度为200℃,热压时间为30min,热压压力为10MPa,控制丙纶融化程度,将各层织物有效连接,且保持织物具备的柔软性,制得一种具有厚度的柔性防弹层合板。
本实施例的一种柔性防弹层合板的制备方法,以以两种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺,利用熔点差异及热压工艺可以有效加强织物层间结合;设计高性能纤维纱与复合纱线的交织规格,改变经向、纬向或经纬向嵌入复合纱线的间距,可以改变层合板的连接结构,改变材料防弹性能;根据织造工艺试制二维织物为预制件,选择合理的经纬密,控制织物紧度,可以提高织物强度,消弱外界的冲击力量;将多个预制件重叠以热压工艺使得织物层合,可自由调整柔性防弹层合板的厚度;热压工艺控制热压温度、时间、压力,控制低熔点高性能纤维纱融化程度,从而控制层合板各层织物间的连接程度,制得具有厚度的柔性防弹层合板。该制备方法工艺简单,成本较低,所制得的柔性防弹层合板柔软质轻,且在高速冲击下不易分层,能有效吸收子弹的冲击能量。
实施例3
本实施例的一种柔性防弹层合板及其制备方法,以线密度为122tex且熔点大于300℃的芳纶(K129,购于杜邦公司)、线密度为122tex且熔点680℃的玻璃纤维纱(购于杭州泰克斯复合材料有限公司)为主要原料,以线密度为67tex且熔点为154℃的高强聚乙烯纤维纱(购于宁波大成新材料股份有限公司)为辅助原料;分别选择芳纶、玻璃纤维纱作为芯纱,高强聚乙烯纤维纱作为外包纱,通过包缠工艺制备芳纶/高强聚乙烯纤维复合纱线、玻璃纤维/高强聚乙烯纤维复合纱;设计织物组织为平纹,绘制上机图,输入微软***织物设计CAD软件,(购于天津隆达机电科技发展有限公司)中,上机经纬密设置为10根/cm,幅宽20cm;织造两种相同规格、不同原料的二维织物,本实施例芳纶与芳纶/高强聚乙烯纤维复合纱线的交织规格为经纬向嵌入芳纶/高强聚乙烯纤维复合纱线的织物是在整经过程中间隔加入芳纶/高强聚乙烯纤维复合纱线及在织造过程中加入芳纶/高强聚乙烯纤维复合纱线打纬;即经纱为芳纶且在整经时每段间隔加入芳纶/高强聚乙烯纤维复合纱线根数;纬纱为芳纶,且在织造中对于纬向嵌入芳纶/高强聚乙烯纤维复合纱线的织物需要间隔性更换纬纱为芳纶/高强聚乙烯纤维复合纱线;在经纬向以每8cm的间距嵌入宽度为0.4cm的芳纶/高强聚乙烯纤维复合纱线,即整经过程中每隔80根芳纶加入4根芳纶/高强聚乙烯纤维复合纱线,选择4片综框、10号筘进行穿综、穿筘,在剑杆织机上进行引纬、打纬,纬纱每隔80根芳纶加入4根芳纶/高强聚乙烯纤维复合纱线,制得一种二维织物为预制件A;本实施例玻璃纤维纱与玻璃纤维/高强聚乙烯纤维复合纱线的交织规格为经纬向嵌入玻璃纤维/高强聚乙烯纤维复合纱线的织物是在整经过程中间隔加入玻璃纤维/高强聚乙烯纤维复合纱线及在织造过程中加入玻璃纤维/高强聚乙烯纤维复合纱线打纬;即经纱为玻璃纤维且在整经时每段间隔加入玻璃纤维/高强聚乙烯纤维复合纱线根数;纬纱为玻璃纤维,且在织造中对于纬向嵌入玻璃纤维/高强聚乙烯纤维复合纱线的织物需要间隔性更换纬纱为玻璃纤维/高强聚乙烯纤维复合纱线;在经纬向以每8cm的间距嵌入宽度为0.4cm的玻璃纤维/高强聚乙烯纤维复合纱线,即整经过程中每隔80根玻璃纤维纱加入4根玻璃纤维/高强聚乙烯纤维复合纱线,选择4片综框、10号筘进行穿综、穿筘,在剑杆织机上进行引纬、打纬,纬纱每隔80根玻璃纤维纱加入4根玻璃纤维/高强聚乙烯纤维复合纱线,制得一种二维织物为预制件B;将10个预制件A与10个预制件B层层间隔重叠在模具中,并将模具置于XLB25-L平板硫化机中进行热压使得织物层合,其中热压工艺设置热压温度为165℃,热压时间为60min,热压压力为2.5MPa,控制高强聚乙烯融化程度,将各层织物有效连接,且保持织物具备的柔软性,制得一种具有厚度的柔性防弹层合板。
本实施例的一种柔性防弹层合板的制备方法,以三种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺,利用熔点差异及热压工艺可以有效加强织物层间结合;设计高性能纤维纱与复合纱线的交织规格,改变经向、纬向或经纬向嵌入复合纱线的间距,可以改变层合板的连接结构,改变材料防弹性能;根据织造工艺试制二维织物为预制件,选择合理的经纬密,控制织物紧度,可以提高织物强度,消弱外界的冲击力量;将两种不同原料的多个预制件间隔重叠以热压工艺使得织物层合,可自由调整柔性防弹层合板的厚度,且织物的多样性可弥补单一原料的性能不足,增强层合板的抗冲击性能;热压工艺控制热压温度、时间、压力,控制低熔点高性能纤维纱融化程度,从而控制层合板各层织物间的连接程度,制得具有厚度的柔性防弹层合板。该制备方法工艺简单,成本较低,所制得的柔性防弹层合板柔软质轻,且在高速冲击下不易分层,能有效吸收子弹的冲击能量。
Claims (10)
1.一种柔性防弹层合板的制备方法,其特征在于:以两种不同熔点的高性能纤维纱为原料,选择合理的纱线复合工艺制备复合纱线,设计高性能纤维纱与复合纱线的交织规格及织造工艺试制二维织物为预制件,将2层以上预制件重叠以热压工艺使得织物层合,制得柔性防弹层合板。
2.如权利要求1所述的一种柔性防弹层合板的制备方法,其特征在于:所述两种不同熔点的高性能纤维纱采用一种线密度为80tex~160tex高性能纤维纱为主要原料;另一种线密度为30tex~60tex且熔点较低的高性能纤维纱为辅助原料。
3.如权利要求2所述的一种柔性防弹层合板的制备方法,其特征在于:所述的主要原料采用线密度为122tex且熔点大于300℃的芳纶、线密度为111tex且熔点大于300℃的芳纶、线密度为122tex且熔点680℃的玻璃纤维纱中的一种或两种;所述的辅助原料采用线密度为67tex且熔点为154℃的高强聚乙烯纤维纱、以线密度为33.3tex且熔点为180℃的丙纶、以线密度为67tex且熔点为154℃的高强聚乙烯纤维纱中的一种。
4.如权利要求1所述的一种柔性防弹层合板的制备方法,其特征在于,所述纱线复合工艺是:以线密度较大熔点高的高性能纤维纱作为芯纱,以线密度较小熔点低的高性能纤维纱作为外包纱,采用包缠或网络工艺制备复合纱线,其中作为芯纱的高性能纤维纱体积含量应控制在60%~80%。
5.如权利要求1所述的一种柔性防弹层合板的制备方法,其特征在于,所述交织规格为:在高性能纤维纱织物织造过程中,以高性能纤维纱作为经纬纱,经向或纬向或经纬向间隔性嵌入复合纱线,所述经向或纬向或经纬向间隔在2cm~20cm范围内,所述嵌入复合纱线的宽度控制在2mm~10mm;
所述织造工艺为:设计织物组织为平纹、斜纹、缎纹或纱罗组织,绘制上机图,输入微软***织物设计CAD软件中;根据纱线细度设计上机经纬密,控制织物紧度大于等于100%;设计织物幅宽为10cm~35cm;根据上机经纬密、织物幅宽计算整经根数,交织规格为经向嵌入复合纱线的织物仅在整经过程中间隔加入复合纱线;纬向嵌入复合纱线的织物仅在织造过程中加入复合纱线打纬;经纬向嵌入复合纱线的织物是在整经过程中间隔加入复合纱线及在织造过程中加入复合纱线打纬;其中所述的经向嵌入复合纱线具体为整经时每段间隔加入复合纱线根数;然后选择综框、综筘进行穿综、穿筘;所述的纬向嵌入复合纱线具体为在织造中对于纬向或经纬向嵌入复合纱线的织物需要间隔性更换纬纱为复合纱线。
6.如权利要求1所述的一种柔性防弹层合板的制备方法,其特征在于,所述经向或纬向或经纬向间隔在5cm~10cm;所述嵌入复合纱线的宽度控制在4mm~5mm。
7.如权利要求1所述的一种柔性防弹层合板的制备方法,其特征在于:所述2层以上预制件重叠是根据警用防弹衣技术标准或军用防弹衣技术标准选择层合板厚度,计算预制件重叠层数,依次铺于热压模具中。
8.如权利要求7所述的一种柔性防弹层合板的制备方法,其特征在于:所述的重叠层数为10-20层。
9.如权利要求1所述的一种柔性防弹层合板的制备方法,其特征在于:所述热压工艺根据低熔点高性能纤维纱的熔点特性选择热压温度,热压温度为150℃~200℃,热压时间为20min~60min,热压压力为2MPa~10MPa。
10.如权利要1所述的一种柔性防弹层合板的制备方法,其特征在于:所述织物层合是指经热压后各层织物中低熔点高性能纤维纱融化,融化后的纤维在厚度方向上将各层织物连接,经向嵌入复合纱线织物经热压后得到经向柔性层合板,纬向嵌入复合纱线织物经热压后得到纬向柔性层合板,经纬向嵌入复合纱线织物经热压后得到经纬向柔性层合板。
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CN113192758A (zh) * | 2021-04-21 | 2021-07-30 | 上海工程技术大学 | 光电转换织物及其制备方法和应用 |
CN114228023A (zh) * | 2021-12-15 | 2022-03-25 | 北京化工大学 | 双组份单聚合物复合材料制品热压成型方法及装置 |
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