CN107475887A - 一种三维编织复合材料防弹头盔及其制备方法 - Google Patents

一种三维编织复合材料防弹头盔及其制备方法 Download PDF

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CN107475887A
CN107475887A CN201710586183.3A CN201710586183A CN107475887A CN 107475887 A CN107475887 A CN 107475887A CN 201710586183 A CN201710586183 A CN 201710586183A CN 107475887 A CN107475887 A CN 107475887A
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朱波
曹伟伟
王宝刚
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Shandong University
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Abstract

本发明公开了一种三维编织复合材料防弹头盔及其制备方法,其解决了现有技术中防弹头盔存在的整体的刚度和强度较差,层间结合较为薄弱以及原料限制较多的问题。技术方案为:防弹头盔包括三维立体编织结构、沿其厚度方向的二次缝合强化结构和浸渍的树脂层;其中,三维立体编织结构的头盔主体为三维四向或三维五向编织结构,所用纤维为玻璃纤维、碳纤维、芳纶纤维或UHMWPE纤维中的一种或多种;用于防护耳部、后脑和前额的两个侧耳区域、后脑区域和前额区域采用三维六向或三维七向编织结构,该编织结构由主体纤维和强化纤维编织而成,主体纤维与强化纤维的质量比为3:1‑7:1,所述主体纤维为芳纶纤维或碳纤维,所述强化纤维为碳化硅纤维或氧化铝纤维。

Description

一种三维编织复合材料防弹头盔及其制备方法
技术领域
本发明防弹头盔制备领域,具体涉及一种三维编织复合材料防弹头盔及其制备方法。
背景技术
头盔是军用或者民用行业普遍应用的防护装备,在军用或警用行业的防弹或者防暴头盔,可极大的保护来自子弹或者破片的袭击,保护警员或士兵的生命安全;在民用行业,如建筑、运输等工程领域,安全头盔对于保证施工或者运输工人的人身安全也起着至关重要的作用;在其它领域,如体育休闲行业,竞技用的摩托车头盔、橄榄球员佩戴的头盔,对于保证竞技运动中运动员免受撞击伤害,也发挥着十分必要的作用。
随着对于作战、施工、竞技体育等的水平和一系列指标要求的不断提高,对于防弹头盔的安全保护性能以及重量轻量化的要求也在不断提升,为了保证不降低安全水平的情况下,极大的保证头盔的整体性和使用寿命,最大限度的降低头盔的自身重量,各种非金属纤维与树脂复合而成的复合材料结构成为新型头盔的主要组成材质。
目前的复合材料材质中所采用的纤维排布结构主要是二维或单向纤维结构,所采用的树脂主要是热固性树脂或者其它一系列的改性树脂,其主要的成型方式一般是树脂与纤维初步浸渍形成预浸布材料,然后通过常规复合材料的模压或者层压成型方式,通过高压和加温的方式采用大型压力设备进行制备,这种成型工艺所生产的头盔基本都是叠层结构,这种头盔存在层间强度薄弱的问题,尤其在复杂使用环境下(如高温、极寒、风沙、盐雾等),这种因为层间高压压制粘接的结构很容易出现脱层或者开裂的现象,这对于各种应用领域下头盔的综合性能的长久保持有着极大的生产技术瓶颈。
同时,由于对防弹头盔的整体性、使用寿命以及自身重量有着较高的要求,所以,目前,防弹头盔的主要材料是超高分子量聚乙烯纤维和芳族聚酰胺纤维两种,其他的纤维材料难以满足防弹头盔的要求。
综上所述,现有技术中防弹头盔存在的整体的刚度和强度较差,层间结合较为薄弱以及原料限制较多的问题,尚缺乏有效的解决方案。
发明内容
针对上述现有技术中存在的技术问题,本发明的目的是提供一种三维编织复合材料防弹头盔及其制备方法。该防弹头盔采用了三维立体编织技术与树脂真空导入工艺相结合,实现了三维编织复合材料头盔的真空快速固化成型,这种三维立体编织成型技术有效提高了传统二维复合材料叠层结构头盔的整体的刚度和强度,消除了层间结合薄弱的问题,即使使用聚乙烯纤维和芳族聚酰胺纤维以外的纤维进行制备,同样会取得良好的效果,可以满足防弹头盔的性能要求。
为了解决以上技术问题,本发明的技术方案为:
一种三维编织复合材料防弹头盔,包括三维立体编织结构、沿其厚度方向的二次缝合强化结构和浸渍的树脂层;其中,三维立体编织结构的头盔主体为三维四向或三维五向编织结构,所用纤维为玻璃纤维、碳纤维、芳纶纤维或UHMWPE纤维中的一种或多种的组合;头盔的用于防护耳部、后脑和前额的两个侧耳区域、后脑区域和前额区域采用三维六向或三维七向编织结构,该编织结构由主体纤维和强化纤维编织而成,主体纤维与强化纤维的质量比为3:1-7:1,所述主体纤维为芳纶纤维或碳纤维,所述强化纤维为碳化硅纤维或氧化铝纤维;
二次缝合强化结构的缝合纱线为高强度玻璃纤维、碳纤维、芳纶纤维或UHMWPE纤维中的一种或多种的组合。
该防弹头盔采用多种纤维进行三维混杂立体一体化编织,提高了传统二维复合材料叠层结构头盔的整体刚度和强度,消除了层间结合薄弱的问题。采用多种纤维混杂编织,对头盔的特定部位进行不同纤维预制体结构的一体化编织,三维预制体成型后,沿三维预制体的厚度方向进行二次缝合强化,最大限度地提高了头盔的整体综合强度、刚度和韧性,使制备得到的头盔具有较轻的质量,同时还可以满足军事防弹要求。同时,采用这样的结构和纤维的配合,扩大了头盔制备的原料种类,解决了传统防弹头盔的原料受限的问题。
试验证明,在头盔的特定部位,只有特定纤维的组合、采用特定的编织方式才能起到良好的防弹效果,如果采用其他的纤维组合,难以取得预期的防弹效果。如,在头盔的耳部、后脑和前额区域,只有采用芳纶纤维或碳纤维作为主体纤维,采用碳化硅纤维或氧化铝纤维作为强化纤维,且主体纤维与强化纤维的质量比为3:1-7:1时,即可使制备的头盔的质量低于1kg,仍可以满足防弹头盔的军事防弹需求。
进一步的,头盔主体采用玻璃纤维、碳纤维、芳纶纤维和UHMWPE纤维中的两种纤维进行编织。
更进一步的,头盔主体采用玻璃纤维和碳纤维混合三维四向编织,玻璃纤维和碳纤维的质量比为0.8-1.2:1;
或,头盔主体采用芳纶纤维和UHMWPE纤维混合三维五向编织,芳纶纤维和UHMWPE纤维的质量比为2.5-3.5:1;
或,头盔主体采用碳纤维和芳纶纤维混合三维四向编织,碳纤维和芳纶纤维的质量比为3.5-4.5:1。
采用以上特定的混合纤维特定的编织方法获得的头盔主体具有良好的整体强度,在达到预期的强度的基础上,可以最大限度降低头盔主体的质量,更适用于防弹头盔的推广应用。
进一步的,二次缝合强化结构的缝合纤维的质量为头盔的三维立体编织结构质量的10-40%。二次缝合强化结构所用纱线的质量较大,可以对头盔的三维立体编织结构进行较大程度的加固,进而最大程度地提高了头盔的整体强度,并且提高了头盔的使用寿命。
进一步的,防弹头盔的耳部区域、后脑区域和前额区域的防护面积的总和为1200-1400cm2
进一步的,所述耳部区域、后脑区域和前额区域的防护面积之比为1:1:1。
每个区域的防护面积满足一定的需求时,才能达到应有的防弹需求。
进一步的,防弹头盔上浸渍的树脂层的重量占防弹头盔总重的35-45%。防弹头盔的质量达到一定要求时,可以充分浸渍防弹头盔的三维立体编织结构,进而起到良好的粘结固定作用,有利于提高防弹头盔的整体强度和使用寿命。
进一步的,所述树脂为环氧树脂、不饱和聚酯树脂或酚醛树脂。
上述三维编织复合材料防弹头盔的制备方法,包括如下步骤:
1)在椭球形阳模上进行三维立体编织,得到三维立体编织结构预制体;
2)将编织成型的预制体继续进行厚度方向的二次缝合,得到二次缝合强化结构;
3)采用VARI真空导入工艺使树脂胶液充分浸渍步骤2)中得到的二次缝合后的预制体,浸渍过程中的真空度为0.06-0.1MPa;
4)浸渍树脂的头盔预制体置于75-90℃固化1-3小时成型。
采用三维立体编织、真空浸渍、快速固化成型,解决了传统二维复合材料叠层结构头盔层间结合薄弱的问题,有效提高了复合材料头盔的刚度和强度。同时,三维立体编织得到的预制体进行真空浸渍胶液,无需对浸渍后的头盔进行热压即可达到预期的刚度和强度。省略了制备步骤,提高头盔的制作效率。
进一步的,步骤1)中,所述椭球形阳模的材质为木质、硅胶材质或不锈钢材质。采用椭球形阳模,在编织过程中不会产生阻碍作用,可以保证三维编织的顺利进行。
进一步的,步骤4)中,加热的方式为微波加热、红外加热、电热静态加热或鼓风加热中的一种或多种的组合。
本发明的有益效果为:
1)根据头盔所用领域进行特定的力学性能设计,对特定头盔部位的纤维结构可进行灵活设计,通过纱线类型、纱线组合方案、纱线排布方向等组合,有针对性的优化头盔特定部位的防护性能;
2)对编织得到的三维多向立体编织头盔预制体沿着厚度方向进行二次铺缝结构强化,提高头盔整体在厚度方向的强度、刚度或耐冲击性,三维立体编织与二次缝合技术结合,一次性完成预制体制备,具有较高的结构完整性;
3)采用真空导入与快速热固化相结合的工艺,完成三维编织复合材料头盔的制备,制品成型效率较高。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。
图1是三维立体编织成型复合材料头盔的俯视图结构示意图;
图2是三维立体编织成型复合材料头盔的主视图结构示意图。
其中,1、前额区域,2、后脑区域,3、左侧耳区域,4、右侧耳区域。
具体实施方式
应该指出,以下详细说明都是例示性的,旨在对本申请提供进一步的说明。除非另有指明,本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是,这里所使用的术语仅是为了描述具体实施方式,而非意图限制根据本申请的示例性实施方式。如在这里所使用的,除非上下文另外明确指出,否则单数形式也意图包括复数形式,此外,还应当理解的是,当在本说明书中使用术语“包含”和/或“包括”时,其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
实施例1
本发明提供的三维编织复合材料头盔结构如图1所示,一种头盔的特定强化部位采用编号1-4标注,复合材料头盔包括头盔本体、前额区域1、后脑区域1、左侧耳区域3和右侧耳区域4。
基于图1的整体结构,采用不锈钢材质、防护面积为1400cm2的椭圆形阳模上进行三维立体编织,头盔主体采用三维四向编织结构,所用纤维为高强度玻璃纤维、T300碳纤维的组合,其中玻璃纤维和T300碳纤维的比例为1:1。玻璃纤维的特点是高强度、高模量,它的单纤维抗拉强度为2800MPa,比无碱玻纤抗拉强度高25%左右,弹性模量86000MPa,比E-玻璃纤维的强度高。
前额区域1、后脑区域1、左侧耳区域3和右侧耳区域4采用三维六向编织结构处理,所用的纤维为芳纶纤维与碳化硅纤维的组合,其中前者为主体纤维、后者为强化纤维,纤维比例为3:1。
将编织成型的预制体继续进行厚度方向的二次缝合处理,选用高强玻璃纤维进行二次缝合,缝合纤维比例为三维立体编织头盔预制体纤维重量的20%。
三维编织后的头盔预制体采用环氧树脂胶液为基体原材料,采用VARI真空导入工艺使胶液充分浸渍以上头盔预制体,整个浸渍复合过程的真空度保持在0.08MPa。浸渍树脂后的头盔预制体于80℃固化3小时后成型,含胶量保持在40%。
制得的头盔的质量为0.9kg。
实施例2
本发明提供的三维编织复合材料头盔结构如图1所示,一种头盔的特定强化部位采用编号1-4标注。
基于图1的整体结构,采用硅胶材质、防护面积在1300cm2的椭圆形阳模上进行三维立体编织,头盔主体采用三维五向编织结构,所用纤维为芳纶纤维、UHMWPE纤维的组合,其中芳纶纤维和UHMWPE纤维的比例为3:1。
前额区域1、后脑区域1、左侧耳区域3和右侧耳区域4采用三维七向编织结构处理,所用的纤维为芳纶纤维与氧化铝纤维的组合,其中前者为主体纤维、后者为强化纤维,纤维比例为4:1。
将编织成型的预制体继续进行厚度方向的二次缝合处理,选用T700碳纤维进行二次缝合,缝合纤维比例为三维立体编织头盔预制体纤维重量的10%。
三维编织后的头盔预制体采用不饱和聚酯树脂胶液为基体原材料,采用VARI真空导入工艺使胶液充分浸渍以上头盔预制体,整个浸渍复合过程的真空度保持在0.06MPa。浸渍树脂后的头盔预制体于90℃固化1小时后成型,含胶量保持在30%。
制得的头盔的质量为0.95kg。
实施例3
本发明提供的三维编织复合材料头盔结构如图1所示,一种头盔的特定强化部位采用编号1-4标注。
基于图1的整体结构,采用木质防护面积在1292cm2的椭圆形阳模上进行三维立体编织,头盔主体采用三维四向编织结构,所用纤维为T800碳纤维、芳纶纤维组合,其中T800碳纤维和芳纶纤维的比例为4:1。
前额区域1、后脑区域1、左侧耳区域3和右侧耳区域4采用三维七向的编织结构处理,所用的纤维为T300碳纤维与氧化铝纤维的组合,其中前者为主体纤维、后者为强化纤维,纤维比例为7:1。
将编织成型的预制体继续进行厚度方向的二次缝合处理,选用UHMWPE纤维进行二次缝合,缝合纤维比例为三维立体编织头盔预制体纤维重量的10%。
三维编织后的头盔预制体采用酚醛树脂胶液为基体原材料,采用VARI真空导入工艺使胶液充分浸渍以上头盔预制体,整个浸渍复合过程的真空度保持在0.1MPa。浸渍树脂后的头盔预制体于80℃固化2小时后成型,含胶量保持在30%。
制得的头盔的质量为0.9kg。
对实施例1-3制得的头盔进行了实弹测试和1.1g模拟破片V50测试及侧向刚性进行了测试。
经检测,实施例1的头盔按GA293-2001标准,已通过中国兵器工业防弹器材质量监督检测中心的检测,可以阻止中国制54式7.62mm手枪发射的51式7.62mm手枪弹的穿透,最大弹痕高度小于10mm。实施例2的头盔按NIJ0106.01标准已通过美国怀特实验室检测,可以阻止NIJIIIA.44Magnum弹的穿透。实施例3的头盔按照MIL-STD-662F标准,已通过中国兵器工业防弹器材质量监督检测中心的检测,可防1.1g模拟破片,V50值为690m/s,达到了美国NIJ标准和国家军用标准。
侧向刚性测试结果,实施例制备的头盔的最大变形量为29mm,残余变形量为10mm。
以上所述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (10)

1.一种三维编织复合材料防弹头盔,其特征在于:包括三维立体编织结构、沿其厚度方向的二次缝合强化结构和浸渍的树脂层;其中,三维立体编织结构的头盔主体为三维四向或三维五向编织结构,所用纤维为玻璃纤维、碳纤维、芳纶纤维或UHMWPE纤维中的一种或多种的组合;头盔的用于防护耳部、后脑和前额的两个侧耳区域、后脑区域和前额区域采用三维六向或三维七向编织结构,该编织结构由主体纤维和强化纤维编织而成,主体纤维与强化纤维的质量比为3:1-7:1,所述主体纤维为芳纶纤维或碳纤维,所述强化纤维为碳化硅纤维或氧化铝纤维;
二次缝合强化结构的缝合纱线为高强度玻璃纤维、碳纤维、芳纶纤维或UHMWPE纤维中的一种或多种的组合。
2.根据权利要求1所述的三维编织复合材料防弹头盔,其特征在于:头盔主体采用玻璃纤维、碳纤维、芳纶纤维和UHMWPE纤维中的两种纤维进行编织。
3.根据权利要求2所述的三维编织复合材料防弹头盔,其特征在于:头盔主体采用玻璃纤维和碳纤维混合三维四向编织,玻璃纤维和碳纤维的质量比为0.8-1.2:1;
或,头盔主体采用芳纶纤维和UHMWPE纤维混合三维五向编织,芳纶纤维和UHMWPE纤维的质量比为2.5-3.5:1;
或,头盔主体采用碳纤维和芳纶纤维混合三维四向编织,碳纤维和芳纶纤维的质量比为3.5-4.5:1。
4.根据权利要求2所述的三维编织复合材料防弹头盔,其特征在于:二次缝合强化结构的缝合纤维的质量为头盔的三维立体编织结构质量的10-40%。
5.根据权利要求2所述的三维编织复合材料防弹头盔,其特征在于:防弹头盔的耳部区域、后脑区域和前额区域的防护面积的总和为1200-1400cm2
6.根据权利要求5所述的三维编织复合材料防弹头盔,其特征在于:所述耳部区域、后脑区域和前额区域的防护面积之比为1:1:1。
7.根据权利要求2所述的三维编织复合材料防弹头盔,其特征在于:防弹头盔上浸渍的树脂层的重量占防弹头盔总重的35-45%。
8.根据权利要求7所述的三维编织复合材料防弹头盔,其特征在于:所述树脂为环氧树脂、不饱和聚酯树脂或酚醛树脂。
9.权利要求1-8任一所述三维编织复合材料防弹头盔的制备方法,其特征在于:包括如下步骤:
1)在椭球形阳模上进行三维立体编织,得到三维立体编织结构预制体;
2)将编织成型的预制体继续进行厚度方向的二次缝合,得到二次缝合强化结构;
3)采用VARI真空导入工艺使树脂胶液充分浸渍步骤2)中得到的二次缝合后的预制体,浸渍过程中的真空度为0.06-0.1MPa;
4)浸渍树脂的头盔预制体置于75-90℃固化1-3小时成型。
10.根据权利要求9所述的制备方法,其特征在于:步骤4)中,加热的方式为微波加热、红外加热、电热静态加热或鼓风加热中的一种或多种的组合。
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