CN1656265B - 有改善的耐撕裂、耐切割和耐磨蚀性能的阻燃织物 - Google Patents

有改善的耐撕裂、耐切割和耐磨蚀性能的阻燃织物 Download PDF

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CN1656265B
CN1656265B CN038119404A CN03811940A CN1656265B CN 1656265 B CN1656265 B CN 1656265B CN 038119404 A CN038119404 A CN 038119404A CN 03811940 A CN03811940 A CN 03811940A CN 1656265 B CN1656265 B CN 1656265B
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fabric
cut
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CN1656265A (zh
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R·朱
R·H·杨
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Abstract

一种由多种纱组分制成、可用于防护服的机织织物,包含主体织物纱组分、其拉伸强度比该主体织物纱组分大至少20%的合成防撕裂纱组分、和一种包含有合成切段纤维皮和无机芯的纱的耐切割纱组分,主体织物纱组分、防撕裂纱组分和耐切割纱组分全都包含至少一种纱,且每种纱组分都因交织正交纱组分而区别于毗邻纱组分。

Description

有改善的耐撕裂、耐切割和耐磨蚀性能的阻燃织物
                      技术领域
本发明涉及可用于防护服、尤其可用于消防队员的、称为消防队员铠甲(turnout gear)的服装的织物,但这样的织物和服装也可用于那些工人可能暴露于需要火灾和火焰防护的磨蚀性和机械上粗糙的环境的工业用途。这些包括外套、衣裤相连工作服、夹克、和/或裤子的服装可以提供对火灾、火焰和热量的防护。
                      背景技术
美国消防队员常用的大多数消防队员铠甲包含三层,每层都执行一种各异的功能。外层织物通常由耐火性芳香族聚酰胺纤维例如聚(间苯二甲酰间苯二胺)(MPD-I)或聚(对苯二甲酰对苯二胺)(PPD-T)或这些纤维与耐火性纤维例如聚苯并咪唑(PBI)的混纺纱制成。与该外层织物毗邻的是一种水分阻透层,常用水分阻透层包括Crosstech
Figure 10003_0
PTFE膜在机织MPD-I/PPD-T基材上的层压体、或氯丁橡胶在纤维性机织聚酯/棉基材上的层压体。与该水分阻透层毗邻的是一种一般包含一个耐热纤维絮垫的隔热衬里。
该外层起到初始防火的作用,而隔热衬里和水分阻透层则能防护热应力。
由于外层提供了基本防御,因而理想的是这个外层是耐久的、能耐受磨蚀、在粗糙环境中不撕裂或割破。本发明提供了这样一种耐火的而且有改善的撕裂属性、切割属性、和磨蚀属性的织物。
先有技术上描述的许多利用裸钢丝和帘线的织物主要用来作为铠装织物。例如,WO 972776 9(Bourgois等人)公开了一种包含多根捻在一起的钢帘线的防护性纺织品织物。WO 200186046(Vanassche等人)公开了一种包含用来为防护性纺织品提供耐切割性能或增强作用的钢元件的织物。这些钢元件是要么一种单股钢丝、一束非加捻钢丝、要么一种加捻钢纤维帘线。GB 2324100(Soar)公开了一种从加捻多股缆制作的防护材料,该缆可以缝到一层或多层Kev1ar
Figure 10003_1
上而形成一种单元材料。裸金属丝的使用提出了加工挑战和服装美学(舒适和手感)问题,是所不希望的。
U.S.4,470,251(Bettcher)公开了一种通过将许多合成纤维纱例如尼龙和芳香族聚酰胶卷绕在多股不锈钢丝和高强度合成纤维例如芳香族聚酰胺的芯上制作的耐切割纱,和一种由该卷绕纱制作的安全服装。
U.S.5,119,512(Dunbar等人)公开了一种由耐切割纱制作的防护性织物,该纱包含两种各异的非金属纤维,其中至少一种是可挠曲的且固有地耐切割的,另一种在莫氏硬度计上有三莫(Mohs)以上的硬度水平。
                      发明内容
本发明涉及一种由多种纱组分制成、可用于防护服的机织织物,包含一种主体织物纱组分、一种其拉伸强度比该主体织物纱组分大至少20%的合成防撕裂纱组分、和一种包含有合成切段纤维皮和无机芯的纱的耐切割纱组分,主体织物纱组分、防撕裂纱组分、和耐切割纱组分全都包含至少一种纱,且每种纱组分都因交织正交纱组分而区别于毗邻纱组分。较好,该防撕裂纱组分可以包含变形或膨化的连续长丝纱。该防撕裂纱较好是从一种由耐火纤维制作的纱制成的,较好的耐火纤维是从聚(对苯二甲酰对苯二胺)制作的。该防撕裂纱组分,除含有从耐火纤维制作的纱外,也可以含有数量为可高达该防撕裂纱组分的20wt%的尼龙纤维。较好,该耐切割纱组分中皮/芯纱的切段纤维皮包含从聚(对苯二甲酰对苯二胺)制作的切段纤维,且该无机芯包含金属纤维。这种耐切割纱组分纱的切段纤维皮可以含有耐切割切段纤维,而且除该耐切割切段纤维外也可以含有数量为可高达该耐切割纱组分纱的20wt%的尼龙纤维。该主体织物纱组分包含耐火纤维的纱,且较好除耐火纤维外还含有数量为可高达该主体织物的20wt%的尼龙纤维。
本发明的一种实施方案涉及一种可用于从正交经纬纱组分制作的防护服的机织织物,包含一种主体织物纱组分、一种其拉伸强度比该主体织物纱组分大至少20%的合成防撕裂纱组分、和一种包含有合成纤维皮和无机芯的纱的耐切割纱组分,该主体织物纱组分、防撕裂纱组分、和耐切割纱组分全都在该织物中包含单股或合股的经纱和纬纱,且其中每第五~第九正交经纱和纬纱成分是一个防撕裂纱组分。较好,耐切割纱组分配置于经纱和纬纱两者中的每一个防撕裂纱组分之间。该防撕裂纱组分可以含有变形或膨化的连续长丝纱。
本发明的另一种实施方案涉及一种由正交纱组分制成、可用于防护服的机织织物,包含一组主体织物纱组分、一种其拉伸强度比该主体织物纱组分大至少20%的合成防撕裂纱组分、和一种包含有合成切段纤维皮和无机芯的纱的耐切割纱组分,该主体织物纱组分、防撕裂纱组分、和耐切割纱组分全都包含至少一种纱且每种纱组分都因交织正交纱组分而区别于毗邻纱组分,所述防撕裂纱组分正交于该耐切割纱组分。该防撕裂纱组分可以含有一种变形或膨化的连续长丝纱。
本发明也涉及从经纱组分和纬纱组分制成、可用于防护服的机织织物的制造工艺,包含从一种主体织物纱组分和一种耐切割纱组分织造一种织物,该耐切割纱组分包含一种有合成切段纤维皮和无机芯的纱,和把一种其拉伸强度比该主体织物纱组分大至少20%的合成防撕裂纱组分插入该织物的每第五至第九经纱和纬纱组分。
在另一种实施方案中,本发明涉及从正交纱组分制成、可用于防护服的机织织物的制造工艺,包含从一种主体织物纱组分织造一种织物,把一种防撕裂纱组分插入该织物的每第五~第九纱组分形成一种合成防撕裂纱组分的平行阵列,每个组分都有比该织物纱组分大至少20%的拉伸强度,并以正交于平行防撕裂纱组分阵列的方式向该织物中插入一种耐切割纱组分平行阵列,每一种耐切割纱组分都包含一种有合成切段纤维皮和无机芯的纱。
                     附图简要说明
图1是本发明织物中通过交织正交经纱组分分开的纬向上一些可能纱组分的说明。
图2是一种有切段纤维皮/无机芯构造的耐切割纱的说明。
图3是本发明织物的一种实施方案的说明。
图4是本发明织物的另一种实施方案的说明。
                     具体实施方式
本发明的织物,与先有技术织物相比,兼备改善的耐切割性能和改善的耐撕裂性能,且较好有改善的耐磨蚀性能。该织物是使用已知的织物织造机织造的,而且可以掺入各种类型的防护服和服装中。这些织物典型地有4~12盎斯/平方码的单位重量范围,而且可以是任何一种正交织纹,然而,平纹组织和2×1斜纹组织是较好的织纹。
本发明包含三种类型的纱组分—一种主体织物纱组分、一种防撕裂纱组分、和一种耐切割纱组分。如本文中所指,纱组分可以是一种纱、一种合股线、或一种纱组合、或一种合股线组合。一般来说,处于一种机织织物的一个方向上的每种纱组分都通过交织正交纱组分而区别于该相同方向上的毗邻纱组分。例如,在平纹组织中,经纱组分和纬纱组分相互交织,其中,该经纱组分从该纬纱组分上面和下面穿过,勾勒出每个纬纱组分的外形,使其区别于毗邻纬纱组分。同样,毗邻经纱组分交替变换与该纬纱交织的方向;即,第一个经纱组分将从一个纬纱组分上面穿过,第二个毗邻经纱组分将从该同一纬纱组分下面穿过。这种交替交织动作在整个织物中重复进行,产生了经典的平纹组织结构。因此,该纬纱组分也勾勒出每个经纱组分的外形,使其区别于毗邻经纱组分。在斜纹组织中,经纱组分和纬纱组分有相同的转换,尽管经纱组分和纬纱组分的实际交织较少。在2×1斜纹组织中,该织纹的偏移交错交织结构意味着一个经纱组分从不止一个纬纱组分上穿过,并在该织物中周期性地处于直接毗邻另一个经纱组分的位置。然而,该经纱组分和纬纱组分仍然是彼此勾勒外形的,尽管它们在该织物中是偏移或交错的,而且这些纱组分可以通过检查而清楚地确认。
典型地说,该织物的主要部分是从主体织物纱组分制成的,这些组分通常包含那些含有耐火纤维的纱。“耐火纤维”这一术语,如本文中所使用的,系指含有碳和氢两者的聚合物的切段纤维或长丝纤维,它们也可以含有其它元素如氧和氮,而且它们有LOI 25以上。
适用的耐火纤维包括聚(间苯二甲酰间苯二胺)(MPD-I)、聚(对苯二甲酰对苯二胺)(PPD-T)、聚苯并咪唑(PBI)、聚亚苯基苯并二噁唑(PBO)、和/或这些纤维的共混物或混合物。对于改善的耐磨蚀性能来说,该主体织物纱组分可以有除该耐火纤维外至多20wt%、较好低于10wt%尼龙纤维。该主体织物纱组分较好是含有60wt%PPD-T纤维和40wt%PBI纤维的短纤维纱。该主体织物纱组分的较好形式和尺寸是(英制)棉纱支数在16/2~21/2范围内的上述组成的股线。
该织物的防撕裂纱组分可用于给该织物提供撕裂强度,而且有比主体织物纱组分的拉伸强度大至少20%的拉伸强度。该防撕裂纱组分典型地含有至少一种也是耐火的连续复丝纱。适用的耐火纤维包括从芳族聚酰胺例如聚(对苯二甲酰对苯二胺)(PPD-T)、聚(间苯二甲酰间苯二胺)(MPD-T)及其它高强度聚合物例如聚亚苯基苯并二噁唑(PBO)制造的纤维和/或这些纤维的共混物或混合物。该防撕裂纱组分较好含有1~3种纱。如果将一种纱用于该防撕裂纱组分,则该种纱必须有比主体织物纱组分的拉伸强度大至少20%的拉伸强度;如果将三种纱用于该防撕裂纱组分,则这合并的三种纱必须有比该主体织物纱组分的拉伸强度大至少20%的拉伸强度。如果使用不止一种纱作为该防撕裂纱组分,则这些纱可以合股在一起,也可以不合股就使用。该防撕裂纱组分的总旦值在200旦~1500旦范围内,且适合用于该防撕裂纱组分的纱的旦值在200~1000旦范围内。该防撕裂纱组分也可以有与该耐火纱组合的、或除该耐火纱外的至多20%尼龙纤维,以改善耐磨蚀性能。
较好使用变形的连续长丝600旦PPD-T纱作为本发明的防撕裂纱组分。也较好的是,该防撕裂纱组分中使用的连续复丝纱是变形或膨化的,以使这些长丝多根并合和在该纱中产生一种无规缠结的环结构。业内已知的、能实现这一点的一种工艺称为喷气变形,其中,使用加压空气或某种其它流体来重排该长丝束并沿该纱的长度产生环和弓。在一种典型的工艺中,把要膨化的复丝纱以比其脱离喷嘴更大的速度进料到一个变形喷嘴中。加压空气冲击该长丝束,产生环并以无规方式使该长丝缠结。为了本发明的目的,理想的是超喂速率为14~25%,可用范围为5~30%这一量级。以这种超喂速率使用膨化工艺,会产生一种与喂进该变形喷嘴中的纱相比有每单位长度更高重量或旦值的多根合并纱。已发现,每单位长度的重量增加应当在3~25wt%范围内,且较好增加10~18wt%。已经发现,在本发明织物的制造中最有用的膨化纱较好在200~1000旦范围内、更好在300~600旦范围内。这些环和缠结产生了一种有一些类似于仿短纤维纱的表面特征的连续长丝纱。
本发明织物的耐切割纱组分含有至少一种有皮/芯构造的纱,其中该皮包含合成纤维且该芯包含无机纤维。皮中的纤维包含合成切段纤维,因为它们产生一种更舒适的纱。较好,该皮中的合成纤维包含耐切割纤维,后者可包括任何数目的、从聚(对苯二甲酰对苯二胺)(PPD-T)及其它高强度聚合物例如聚亚苯基苯并二噁唑(PBO)及其混合物或共混物制造的纤维。较好的是,该耐切割纤维也是耐火的,且较好的阻燃剂和耐切割纤维是PPD-T纤维。该皮也可以在能容忍由于其它材料而引起的耐切割性能下降的程度上包括一些其它材料的纤维。该耐切割纱组分也可以有与该耐切割纱组合的或除该耐切割纱外的至多20wt%尼龙纤维,用于改善耐磨蚀性能。
该纱的芯含有至少一种无机纤维。该芯中可用的无机纤维包括玻璃纤维或者从金属或合金制造的纤维。该金属纤维芯可以是一种单股金属纤维或若干金属纤维,如同特定情况所需要或所希望的。较好的芯纤维是一种从不锈钢制造的单股金属纤维。所谓金属纤维系指从一种延性金属例如不锈钢、铜、铝、青铜等制造的纤维或金属丝。这些金属纤维一般是连续金属丝且直径的10~150μm,且较好直径为25~75μm。
构成该皮的切段纤维可以围绕金属纤维芯缠绕或纺纱。若为缠绕,则该切段纤维一般呈以已知手段例如环锭纺纱、包缠纺纱、喷气纺纱、自由端纺纱等进行松散地紧缩或纺纱、然后以足以实质上被覆该芯的密度缠绕该金属芯的切段纤维形式。若为纺纱,则该切段纤维皮是用任何一种适用皮/芯纺纱工艺例如DREF纺纱或所谓Murata喷射纺纱或另一种包芯纺纱工艺在金属纤维芯上直接形成的。该皮中存在的阻燃性PPD-T切段纤维有5~25μm直径而且可以有2~20cm、较好4~6cm的长度。一旦该切段纤维缠绕或纺在该芯上,这些有较好金属纤维芯的皮/芯纱一般是1~50wt%金属,其总线密度为100~5000dtex。
图2是一种可以用于本发明耐切割纱组分的耐切割纱7的说明。这种纱有一种配置在无机芯纤维8周围的切段纤维皮9。这种织物的耐切割纱组分可以从一种合股线组合形成,尽管只要求这种合股线组合中的纱之一有皮/芯构造。例如,若该耐切割纱组分是有三种纱的,则这三种纱可以加捻或彼此合股而形成一种合股线。然而,只要求这三种纱之一有皮/芯构造。同样,例如,若该耐切割纱组分是有四种纱的,则这四种纱可以配对然后加捻或彼此合股而形成两种合股线。然而,只要求这四种纱之一有皮/芯构造。合股线是只以通常在5~10捻转或捻回/英寸范围内的少量捻度合在一起的纱。这种低加捻量提供一种紧缩而均衡的纱,而不用另一种纱来完全被覆或缠绕一种纱。
该耐切割纱组分中其余的纱可以有几乎任何一种构造,但希望的是它们主要包含耐火材料,从而保持该服装的耐火性。具体地说,这些其余纱可以从芳族聚酰胺切段纤维或连续芳族聚酰胺长丝制成,而且可以含有其它纤维和材料。然而,必须认识到的是,这样的其它材料的存在可能会降低该织物的阻燃性和/或耐切割性能。典型地说,这些其余纱可以有200~2000dtex范围内的线密度,且单根长丝或纤维有0.5~7dtex、较好1.5~3dtex的线密度。
该耐切割纱组分的较好构造是从2种皮/芯纱制成的合股线,其中,每种纱的皮都是切段长度为1.89cm的切段纤维PPD-T,芯是1.5密尔直径不锈钢。较好的纱有16/2~21/2的(英制)棉纱支数(664~465旦)。任选地,该皮/芯纱,除皮中的阻燃性耐切割纤维外,还可以有至多10wt%-以皮纤维重量为基准多达20wt%-尼龙,以提供改善的耐磨蚀性能。
图1说明通过交织正交经纱组分而分开的一些可能纬纱组分。从诸如短纤维纱集制作的主体织物纱组分1显示为是由交织的经纱组分6而与其它主体织物纱组分1、防撕裂纱组分3、和耐切割纱组分2这样一些组分分开的。耐切割纱组分2显示为从2种短纤维皮/无机芯耐切割纱制作的一种合股线,这些纱中显示的无机芯不是按比例尺绘制的,而是加以放大而用于说明目的。图1中也显示了各种其它类型的纱组分。例如,将一种耐切割纱组分4显示为从2种短纤维皮/芯耐切割纱制作的一种合股线和可以从2种短纤维纱制作的另一种合股线的一种组合。也显示的是一种从一种单丝和2种合股线的组合制造的主体织物纱组分5,每种合股线都是从2种短纤维纱制作的。类似的纱组分类型可以存在于经向上。
本发明的机织织物典型地以主体织物纱组分为主,其防撕裂纱组分和耐切割纱组分仅足以使该织物能在该织物的意向用途上表现出来即可。由于大多数机织织物一般都有正交的经纱组分和纬纱组分,因而较好的是在经向和纬向上都有防撕裂纱组分和耐切割纱组分。进而,希望的是使防撕裂纱组分在整个织物中的经向和纬向上都有分布,因此,由防撕裂纱组分赋予的耐久性在整个织物上是均匀的。进而,相信,最有用的织物是当该防撕裂纱组分在该织物中分布为该织物中每第五至第九正交经纬纱组分时制造的,较好的间隔为每第七经纬纱组分有一个防撕裂纱组分。如果高比例的主体织物纱组分是从短纤维纱制作的,则理想的是使分布于经纬向上的防撕裂纱膨化或变形。
也希望的是,该耐切割纱组分在该织物的正交经向和纬向上都有充分分布。为方便起见,该耐切割纱组分可以在经向和纬向上都配置于每个防撕裂纱组分之间。图3是本发明织物的一种实施方案的说明,图中显示这些经纬纱组分宽阔地分离开而且为说明目的而加以简化。防撕裂纱组分10在经向和纬向上都出现,而且在该织物中是作为每第八组分存在的。主体织物纱组分11在经纬向上都出现在各防撕裂纱组分之间,且耐切割纱组分12在经纬向上都出现在各防撕裂纱组分之间。
在本发明的另一种实施方案中,本发明的机织织物包含主体织物纱组分、合成防撕裂纱组分、和耐切割纱组分,其中,该防撕裂纱组分有比该主体织物纱组分大至少20%的拉伸强度,该耐切割纱组分包含一种有合成切段纤维皮和无机芯的纱,且该防撕裂纱组分正交于该耐切割纱组分。该防撕裂纱组分可以含有一种变形或膨化的连续长丝纱。图4是这种织物类型的说明。防撕裂纱组分10只出现在经向上,所有其它经纱都是主体织物纱组分11。耐切割纱组分12与更多的主体织物纱组分11一起出现在纬向上。
本发明织物的制造工艺包含从一种主体织物纱组分和一种包含有合成切段纤维皮和无机芯的纱的耐切割纱组分织造一种织物,和向该织物中在每第五至第九经纬组分插入一种有比该主体织物纱组分大至少20%的拉伸强度的合成防撕裂纱组分。
有正交纱组分的本发明机织织物的制造工艺的另一种实施方案包含:从一种主体织物纱组分织造一种织物,向该织物中在每第五至第九纱组分插入一种合成防撕裂组分,在该织物中产生一种合成防撕裂纱组分的平行阵列,每个组分都有比该主体织物纱组分大至少20%的拉伸强度,和向该织物中以正交于该平行防撕裂纱组分阵列的方式插入一种耐切割纱组分平行阵列,每个耐切割纱组分都包含一种有合成切段纤维皮和无机芯的纱。
本发明织物可用于且可掺入防护服、尤其可用于消防队员、称为消防队员铠甲的服装。该服装也可用于工业用途,其中,工人可能暴露于磨蚀性的和机械上严酷的、需要火灾和火焰防护的环境。该服装可以包括外套、衣裤相连工作服、夹克、裤子、袖套、围裙、及其它需防护火灾、火焰和热的服装类型。
                      试验方法
热防护性能试验(TPP)
织物在热和火焰方面的预测防护性能是使用“热防护性能试验”NFPA 2112测定的。将一个火焰以规定热通量(典型地84kW/m2)对准一段在水平位置上安装的织物。该试验使用一台铜栓式量热计测定从热原经由样品透过的热能,该织物与热源之间没有间隔。试验终点表征为达到用Stoll&Chianta(“Transactions New York AcademyScience”,1971,33 p649-670)发展的简化模式预测的二度皮肤烧伤所需要的时间。在这种试验中给一个样品指派的值称为TPP值,是达到该终点所需要的总热能,或达到所预测烧伤的直接热源暴露时间乘以入射热通量。TPP值越高,表示隔热性能越好。制备一种三层测试样品,其组成为外层织物(本发明)、水分阻透层和热衬里。水分阻透层是附着到一种2.7oz/yd2(92g/m2)Nomex
Figure 10003_2
/Kevlar
Figure 10003_3
纤维基材上的Crosstech
Figure 10003_4
膜,该热衬里由绗缝列一种3.2oz/yd2(108g/m2)Nomex
Figure 10003_5
短纤维纱布上的三层射流喷网法1.5oz/yd2(51g/m2)片材组成。
耐磨蚀性能试验
耐磨蚀性能是按照ASTM方法D3884-80,在一台可购自TeledyneTaber公司(455 Bryant St.,North Tonawanda,N.Y.14120)的Taber耐磨蚀性能试验机上以一个H-18轮、500g负荷测定的。Taber耐磨蚀性能报告为直至破裂的循环数。
耐切割性能试验
耐切割性能是按照“用于测定防护服中使用的材料的耐切割性能的标准试验方法”ASTM Standard F 1790-97测定的。在该试验进行中,将一个切割刀口在规定力下从安装在一个心轴上的样品上拉过一次。以若干种不同的力,记录从初始接触点到割穿所拉过的距离,以力作为割穿距离的函数作图。从该图确定在25mm距离上割穿所需的力,并加以归一化以确认进刀量的一致性。将归一化的力报告为耐切割力。切割刀口是刀刃长70mm的不锈钢刀片。进刀量是通过在试验开始和结束时用400g负荷在一种氯丁橡胶校准材料上校准的。每个切割试验都使用新切割刀口。该样品是一枚在与经向和纬向偏离45度的方向上切割成50×100mm的长方形织物。心轴是一种半径38mm的圆形导电棒,用双面胶带将样品安装到该心轴上。该切割刀口以与该心轴的纵轴成直角的方式从该心轴上的织物上拉过。当该切割刀口与该心轴发生电接触时记录为割穿。
撕裂强度试验
撕裂强度测定是按照ASTM D5587-96进行的。这种试验方法涵盖使用一台记录等速伸长(CRE)型拉伸试验机按梯形程序进行的纺织品织物撕裂强度测定。用这种试验方法测定的撕裂强度要求该撕裂在测试之前就开始。样品在该梯形的最小底的中心处切一个裂口以开始撕裂。把这个有标记的梯形的非平行边夹在拉伸试验机的平行夹具上。使夹具的分离不断增大,以施加一个力使得该撕裂在整个样品上传播。同时,记录所显现的力。从自记图表记录仪或微处理机数据采集系统计算能使该撕裂继续进行的力。提供梯形撕裂强度的两个计算:单峰力和五个最高峰值力的平均。本专利的实施例使用单峰力。
抓样强度试验
抓样强度测定,即织物或其它片状材料的断裂强度和伸长的测定,是按照ASTM D5034进行的。将一个100mm(4.0英寸)宽样品中心位置安装在拉伸试验机的夹具中,施加一个力直至该样品断裂。从机器标尺或与试验机接口的计算机上得到该试样的断裂力和伸长率值。
                       实施例
实施例1
本发明的高度耐切割和耐久织物制备如下。从合股16/2短纤维线制作一种主体织物纱组分。每种短纤维线都包含50wt%PPD-T(Kevlar)纤维—来自E.I.du Pont de Nemours&Co.,Inc.的1.5dpf、48mm(1.89英寸)切段纤维;40wt%PBI-1.5dpf、51mm(2英寸)切段纤维;和10wt%尼龙切段纤维-T200,来自E.I.du Pontde Nemours&Co.Inc.的1.1dpf、38mm(1.5英寸)切段纤维。这些纱线是通过使这些切段纤维经由惯常棉系统加工混纺成线制作的。
从皮/芯纱制作一种耐切割纱组分,其中,每种纱中的皮都是与以上所列相同的纤维按50wt%/40wt%/10wt%混纺比的PPD-T/PBI/尼龙切段纤维混纺纱,且芯是1.5密尔不锈钢单丝。将PPD-T、PBI、和尼龙纤维喂进短纤维环锭纺纱加工中使用的标准梳棉机,制作已梳棉条。该已梳棉条用两道拉伸(头道/末道拉伸)法加工成熟条,并在粗纱机上加工以制作一种粗纱支数。然后,将粗纱与钢丝一起喂进细纱机中,形成一种皮/芯纱结构。皮/芯线是将两根粗纱环锭纺纱并在临加捻前插入钢芯产生的。该粗纱是约5900dtex(1hank count)。在本实施例中,该钢芯是在临进入最终牵伸辊之前置于两根拉伸的粗纱之间的中心。16/1cc线是每条都使用3.5捻度系数产生的。然后,将16/1cc单线合股成16/2cc以形成一种稳定的纱和进一步织造用耐切割纱组分。防撕裂纱组分包含一种800旦MPD-I(Nomex
Figure 10003_7
纤维,可购自E.I.du Pont de Nemours&Co.Inc.)变形复丝纺。使用这些纱组分制作一种2×1斜纹织物。经纱组分是从含有钢芯PPD-T/PBI/尼龙纱的耐切割纱组分制作的。纬纱组分是PPD-T/PBI/尼龙纱,然而纬向的每第8纱组分换成一个防撕裂纱组分,即2根800旦MPD-I变形长丝纱。当测试这种织物时,显示出是一种没有耐切割纱组分或防撕裂纱组分的织物的耐切割性能的4倍和耐磨蚀性能的2倍。由于MPD-I变形长丝的缘故,纬向的撕裂强度增加了一倍。
实施例2
织物构造同实施例1,所不同的是防撕裂组分的2根MPD-I变形长丝纱换成2根600旦PPD-T长丝纱。这制造了一种耐撕裂性能甚至更高的织物。试验数据显示,其撕裂强度比一种没有防撕裂组分的产品的撕裂强度高3倍。
实施例3
制造一种有7×2防撕裂平纹构造的织物来说明本发明织物。制造一种总英制棉纱支数的16/2s、90wt%PPD-T和10wt%尼龙的皮以及1.5密尔不锈钢丝芯的合股钢增强PPD-T/尼龙纱用于耐切割纱组分(CRYC)。这些纱中的两根变成这种织物的耐切割纱组分。将防撕裂纱组分(RYC)与从2根变形600旦PPD-T连续长丝制成的纱组合。将2根PPD-T/PBI混纺切段纤维纱合股,制造一种总英制棉纱支数为16/2的主体织物纱,该PPD-T占该混纺纱的60wt%,其余是PBI。这些合股主体织物纱中的2根变成主体织物纱组分(BFYC)。
7×2防撕裂织物是通过按下列顺序织造经纱组分和纬纱组分构造的,7系指每个防撕裂纱组分之间的纱组分数,2系指防撕裂纱组分中纱的数目:RYC/CRYC/BFYC/BFYC/CRYC/BFYC/BFYC/CRYC/RYC。
所得到的织物有良好的耐切割性能、耐磨蚀性能和高撕裂强度。在265℃5分钟的热处理进一步改善了耐磨蚀性能,这是由于尼龙收缩并锁住高模量PPD-T纤维的缘故。由于较膨松的织物结构,3个实施例全都也有相同单位面积重量时较高的TPP。
表1
                                        标准Kevlar
Figure 10003_8
/PBI
                                        实施例1                                         实施例2                                       实施例3
                                        Kevlar
Figure 10003_9
/PBI混纺纱,防撕裂组分中有双股
                                        Kevlar
Figure 10003_10
/PBI/尼龙2/1斜纹,Nomex
Figure 10003_11
防撕裂组分在纬向
                                        Kevlar/PBI/尼龙2/1斜纹,Kevlar
Figure 10003_13
防撕裂组分在纬向
                                      Kevlar
Figure 10003_14
/PBIKevlar
Figure 10003_15
变形纱在防撕裂组分中,每2个经纱和纬纱中有Kevlar
Figure 10003_16
/尼龙钢丝纱
                                      试验类型
                                      单位面积重量(g/m2)                                         257.6                                         267.8                                         257.6                                       257.6
                                      厚度(mm)                                         0.66                                         0.97                                         1.04                                       1.19
                                      梯形撕裂(经×纬kg)                                         13.1×12.3                                         16.3×29.5                                         16.8×48.1                                       34.1×37.7
                                      抓样强度(经×纬kg)                                         119.4×105.3                                         117.6×92.2                                         107.6×111.2                                       102.2×132.1
                                      磨蚀(循环)                                         184                                         315                                         311                                       128
                                      耐切割性能(g)                                         469                                         1607                                         1665                                       1055
                                      TPP(cal/cm2)                                         42                                         48                                         49                                       42.4

Claims (16)

1.从各纱组分制成、用于防护服的机织织物,包含:
a)一种主体织物纱组分,
b)一种有比该主体织物纱组分大至少20%的拉伸强度的合成防撕裂纱组分,和
c)包含一种有合成切段纤维皮和无机芯的纱的一种耐切割纱组分,
该主体织物纱组分、防撕裂纱组分、和耐切割纱组分全都包含至少一种纱,且每种纱组分都通过交织正交纱组分而区别于毗邻纱组分,其中该主体织物纱组分包含耐火纤维纱。
2.权利要求1的机织织物,其中,该防撕裂纱组分包含一种变形或膨化的连续长丝纱。
3.权利要求1的机织织物,其中,该防撕裂纱组分是从一种包含聚对苯二甲酰对苯二胺纤维的纱制作的。
4.权利要求1的机织织物,其中,该防撕裂纱组分包含一种从耐火纤维制作的纱。
5.权利要求4的机织织物,其中,该防撕裂纱组分除包含一种从耐火纤维制作的纱外,还以该防撕裂纱组分的至多20wt%的数量包含尼龙纤维。
6.权利要求1的机织织物,其中,该耐切割纱组分纱的切段纤维皮包含从聚对苯二甲酰对苯二胺制作的切段纤维,且该无机芯包含金属纤维。
7.权利要求1的机织织物,其中,该耐切割纱组分纱的切段纤维皮包含耐切割切段纤维。
8.权利要求7的机织织物,其中,该耐切割纱组分纱除包含耐切割切段纤维外,还以该耐切割纱组分纱的至多20wt%的数量包含尼龙纤维。
9.权利要求1的机织织物,其中,该主体织物纱组分纱除包含耐火纤维外,还以该主体织物纱组分纱的至多20wt%的数量包含尼龙纤维。
10.从正交经纱组分和纬纱组分制成、用于防护服的机织织物,包含:
a)一种主体织物纱组分,
b)一种有比该主体织物纱组分大至少20%的拉伸强度的合成防撕裂纱组分,和
c)包含一种有合成切段纤维皮和无机芯的纱的一种耐切割纱组分,
该主体织物纱组分、防撕裂纱组分、和耐切割纱组分全都包含该织物中单股或合股的经纱和纬纱,且
其中每第5~第9正交经纬纱组分是一种防撕裂纱组分,其中该主体织物纱组分包含耐火纤维纱。
11.权利要求10的机织织物,其中,耐切割纱组分在经向和纬向上都配置于每个防撕裂纱组分之间。
12.权利要求10的机织织物,其中,该防撕裂纱组分包含一种变形或膨化的连续长丝纱。
13.从正交纱组分制成、用于防护服的机织织物,包含:
a)一种主体织物纱组分,
b)一种有比该主体织物纱组分大至少20%的拉伸强度的合成防撕裂纱组分,和
c)包含一种有合成切段纤维皮和无机芯的纱的一种耐切割纱组分,
该主体织物纱组分、防撕裂纱组分、和耐切割纱组分全都包含至少一种纱,且每种纱组分都通过交织正交纱组分而区别于毗邻纱组分,所述防撕裂纱组分正交于所述耐切割纱组分,其中该主体织物纱组分包含耐火纤维纱。
14.权利要求13的机织织物,其中,该防撕裂纱组分包含一种变形或膨化的连续长丝纱。
15.从经纱组分和纬纱组分制成、用于防护服的机织织物的制造工艺,包含:
a)从一种主体织物纱组分和一种耐切割纱组分织造一种织物,该耐切割纱组分包含一种有合成切段纤维皮和无机芯的纱,和
b)向该织物中在每第5~第9经纱组分和纬纱组分插入一种有比该主体织物纱组分大至少20%的拉伸强度的合成防撕裂纱组分,其中该主体织物纱组分包含耐火纤维纱。
16.从正交纱组分制成、用于防护服的机织织物的制造工艺,包含:
a)从一种主体织物纱组分织造一种织物,
b)向该织物中在每第5~第9纱组分插入一种合成防撕裂纱组分,产生一种防撕裂纱组分平行阵列,每个组分都有比该主体织物纱组分大至少20%的拉伸强度,和
c)以正交于该平行防撕裂纱组分阵列的方式向该织物中插入一种耐切割纱组分平行阵列,每个耐切割纱组分都包含一种有合成切段纤维皮和无机芯的纱,其中该主体织物纱组分包含耐火纤维纱。
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JP4448025B2 (ja) 2010-04-07
US20030226612A1 (en) 2003-12-11
WO2003104539A1 (en) 2003-12-18
KR100967271B1 (ko) 2010-07-01
CN1656265A (zh) 2005-08-17
DE60311650D1 (de) 2007-03-22
TWI304449B (en) 2008-12-21
US6840288B2 (en) 2005-01-11
EP1509644B1 (en) 2007-02-07
KR20050008782A (ko) 2005-01-21
TW200400286A (en) 2004-01-01
AU2003274340A1 (en) 2003-12-22
DE60311650T2 (de) 2007-11-22
JP2005529250A (ja) 2005-09-29
EP1509644A1 (en) 2005-03-02

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