CN110981516B - 复合材料防弹板及其制备方法 - Google Patents

复合材料防弹板及其制备方法 Download PDF

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CN110981516B
CN110981516B CN201911285051.2A CN201911285051A CN110981516B CN 110981516 B CN110981516 B CN 110981516B CN 201911285051 A CN201911285051 A CN 201911285051A CN 110981516 B CN110981516 B CN 110981516B
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吴永龙
朱堂龙
余佳佳
王宇湖
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Abstract

一种复合材料防弹板及其制备方法,属于复合材料技术领域。该复合材料防弹板制备方法,包括以下步骤:浸渍~造粒~铺层~模压~HPS~PIP。本发明结合了PIP工艺和HPS工艺,使用铝溶胶为浸渍液,使用高性能纤维无纬布为增强材料,制备的复合材料板具有更高的密度,更高的韧性和更好的防弹性能,且降低了对设备的要求,提高了制备效率。

Description

复合材料防弹板及其制备方法
技术领域
本发明涉及的是一种复合材料领域的技术,具体是一种复合材料防弹板及其制备方法。
背景技术
随着常规武器的迅速发展,对防弹材料要求也越来越高。陶瓷材料板作为防弹插板最重要的部分,其性能决定了防弹插板的防护等级。
陶瓷材料板一般采用碳化硅粉体或者氧化铝粉体热压烧结制备,这种纯陶瓷插板受到子弹冲击时,易产生应力集中,导致灾难性损坏。也有人提出采用三维编织纤维作为增强材料,制备陶瓷基复合材料板。虽然一定程度上起到增韧效果,但三维编织物经纬纱交错处在子弹冲击下容易断裂。
为了解决现有技术存在的上述问题,本发明由此而来。
发明内容
本发明针对现有技术存在的上述不足,提出了一种复合材料防弹板及其制备方法,采用高性能纤维无纬布作为增强材料,与陶瓷粉体进行交替铺层,无纬布铺层采用[0°/90°]T铺层方式,使得二维平面上同性,避免子弹冲击导致复合材料防弹板断裂。
本发明涉及一种复合材料防弹板制备方法,包括以下步骤:
浸渍:在真空条件下将高性能纤维无纬布加压浸渍于浸渍液铝溶胶中;
造粒:选用陶瓷基体粉体,向陶瓷基体粉体中加入粘合剂铝溶胶后造粒,得到陶瓷粒;
铺层:将浸渍步骤得到的高性能纤维无纬布按[0°/90°]T方式铺层于模具中,相邻两层高性能纤维无纬布之间均匀铺上一层陶瓷粒,得到已铺层材料;
模压:加热升温至模压温度,保温一定时间后模压已铺层材料,模压后缓慢降温再脱模,得到生坯;
HPS(Hot pressing sintering,热压烧结):升温预热生坯并保温一段时间,之后加压并升温至烧结温度,热压烧结,保温一定时间后缓慢降温,得到复合材料防弹板;
PIP(Polymer Infiltration and Pyrolysis,先驱体浸渍裂解):将复合材料防弹板置于浸渍液铝溶胶中真空加压浸渍,之后常压烧结,常压烧结过程中脱水,保温一定时间后缓慢降温,在复合材料防弹板中裂解得到氧化铝;重复操作2~3次。
优选地,高性能纤维无纬布包括但不限于碳纤维无纬布、玻璃纤维无纬布、氧化铝纤维无纬布、碳化硅纤维无纬布,还包括其他陶瓷纤维无纬布;进一步优选地,高性能纤维无纬布采用氧化铝纤维无纬布。
本发明涉及一种复合材料防弹板,采用上述方法制备得到;包括按[0°/90°]T方式铺层的高性能纤维无纬布,烧结在相邻两层高性能纤维无纬布之间的陶瓷基体,以及裂解在复合材料防弹板中的氧化铝。
技术效果
与现有技术相比,本发明具有如下技术效果:
1)结合了PIP工艺和HPS工艺,制备的复合材料防弹板具有高密度、高韧性和高防弹性能的优点;
2)采用高性能纤维无纬布作为增强材料,替代陶瓷基复合材料中使用的三维编织件,无纬布铺层采用[0°/90°]T铺层方式,二维平面上同性,并且高性能纤维无纬布与陶瓷基体交替设置,提升了抗子弹冲击性能,避免子弹冲击导致复合材料防弹板断裂;
3)铝溶胶一方面作为浸渍液,裂解得到氧化铝,能避免采用其他粘合剂导致杂质增加,另一方面作为陶瓷基体粉体粘结剂,能够降低烧结工艺要求,提升制备效率,降低对设备的要求。
附图说明
图1为本发明实施例的工艺流程图;
图2为本发明实施例制得的氧化铝基陶瓷复合材料防弹板结构示意图;
图中:氧化铝纤维无纬布层1、氧化铝陶瓷层2。
具体实施方式
下面结合附图及具体实施方式对本发明进行详细描述。
如图1所示,本发明实施例涉及一种氧化铝基陶瓷复合材料防弹板制备方法,包括以下步骤:
浸渍:在真空条件下将氧化铝纤维无纬布加压浸渍于固含量10%~50%的浸渍液铝溶胶中,浸渍液铝溶胶pH为3~10,加压压力为2~5MPa;
造粒:选用平均粒径1~5μm的ɑ-Al2O3粉体,按铝溶胶与ɑ-Al2O3粉体重量比5:95~1:1的比例向ɑ-Al2O3粉体中加入固含量10%~50%的粘合剂铝溶胶后造粒,得到陶瓷粒;
铺层:将浸渍步骤得到的氧化铝纤维无纬布按[0°/90°]T方式铺层于模具中,模具优选钢模模具,相邻两层氧化铝纤维无纬布之间均匀铺上一层陶瓷粒,得到已铺层材料,之后进行脱水处理;已铺层材料优选具有三层氧化铝纤维无纬布和两层陶瓷粒;
模压:将钢模置于油压机中,加热升温至120~150℃,保温0.5~4h后模压,模压压力为5~25MPa,模压后缓慢降温再脱模,得到生坯;
HPS:将生坯置于热压炉中,升温预热,之后加压并升温至烧结温度,在1000~1300℃的烧结温度、5~25MPa加压压力下热压烧结,保温1~4h后缓慢降温,得到氧化铝基陶瓷复合材料防弹板;
PIP:将防弹板半成品置于浸渍液铝溶胶中真空加压浸渍,加压浸渍压力为5~25MPa;之后置于高温炉升温至1000~1300℃,在1000~1300℃的烧结温度下常压烧结,保温1~2h后缓慢降温,在氧化铝基陶瓷复合材料防弹板中裂解得到氧化铝;重复操作2~3次,提高氧化铝基陶瓷复合材料防弹板整体密度。
优选地,HPS步骤和PIP步骤中,升温速率通过试验确定。
最终得到如图2所示氧化铝基陶瓷复合材料防弹板并对其进行性能测试,其中,氧化铝纤维无纬布层1共三层,单层厚度均为1mm,氧化铝陶瓷层2共两层,单层厚度为3.1mm,总厚度为9.2mm;氧化铝基陶瓷复合材料防弹板正面尺寸为250mm×300mm,四角倒角,倒角边长20mm。
实施例1
浸渍:在真空条件下将氧化铝纤维无纬布加压浸渍于固含量20%的铝溶胶中,加压压力为4MPa;
造粒:选用平均粒径5μm的ɑ-Al2O3粉体,向ɑ-Al2O3粉体中加入固含量30%的铝溶胶后造粒,得到陶瓷粒,铝溶胶在陶瓷粒中的重量比例为10%,即铝溶胶与ɑ-Al2O3粉体重量比为1:9;
铺层:将浸渍步骤得到的氧化铝纤维无纬布按[0°/90°]T方式铺层于钢模模具中,相邻两层氧化铝纤维无纬布之间均匀铺上一层陶瓷粒,得到五层结构已铺层材料,对已铺层材料进行脱水处理;
模压:将钢模置于油压机中,加热升温至120℃,保温4h后模压,模压压力为20MPa,模压后缓慢降温再脱模,得到生坯;
HPS:将生坯置于热压炉中,升温至350℃保温2h,提升压力至25MPa后,继续升温至1100℃热压烧结,保温2h后缓慢降温,得到氧化铝基陶瓷复合材料防弹板;
PIP:将氧化铝基陶瓷复合材料防弹板置于浸渍液铝溶胶中真空加压浸渍,之后置于高温炉升温至1100℃,在1100℃的烧结温度下常压烧结,保温2h后缓慢降温,在防弹板半成品表面裂解得到氧化铝涂层;重复操作3次。
得到的陶瓷复合材料板密度为3.03g/cm3,其抗压强度达到1500MPa,抗弯强度为432MPa,冲击强度1kJ/m2,断裂韧性为14.3MPa·m1/2
实施例2
浸渍:在真空条件下将氧化铝纤维无纬布加压浸渍于固含量30%的铝溶胶中,加压压力为2MPa;
造粒:选用平均粒径3μm的ɑ-Al2O3粉体,向ɑ-Al2O3粉体中加入固含量30%的铝溶胶后造粒,得到陶瓷粒,铝溶胶在陶瓷粒中的重量比例为15%,即铝溶胶与ɑ-Al2O3粉体重量比为3:17;
铺层:将浸渍步骤得到的氧化铝纤维无纬布按[0°/90°]T方式铺层于钢模模具中,相邻两层氧化铝纤维无纬布之间均匀铺上一层陶瓷粒,得到五层结构已铺层材料,对已铺层材料进行脱水处理;
模压:将钢模置于油压机中,加热升温至150℃,保温1h后模压,模压压力为25MPa,模压后缓慢降温再脱模,得到生坯;
HPS:将生坯置于热压炉中,升温至400℃保温2h,提升压力至15MPa后,继续升温至1200℃热压烧结,保温2h后缓慢降温,得到氧化铝基陶瓷复合材料防弹板;
PIP:将氧化铝基陶瓷复合材料防弹板置于浸渍液铝溶胶中真空加压浸渍,之后置于高温炉升温至1200℃,在1200℃的烧结温度下常压烧结,保温2h后缓慢降温,在防弹板半成品表面裂解得到氧化铝涂层;重复操作2次。
得到的陶瓷复合材料板密度为2.97g/cm3,其抗压强度达到1357MPa,冲击强度1kJ/m2,抗弯强度为364MPa,断裂韧性为11.2MPa·m1/2
实施例3
浸渍:在真空条件下将氧化铝纤维无纬布加压浸渍于固含量30%的铝溶胶中,加压压力为5MPa;
造粒:选用平均粒径1μm的ɑ-Al2O3粉体,向ɑ-Al2O3粉体中加入固含量30%的铝溶胶后造粒,得到陶瓷粒,铝溶胶在陶瓷粒中的重量比例为20%,即铝溶胶与ɑ-Al2O3粉体重量比为1:4;
铺层:将浸渍步骤得到的氧化铝纤维无纬布按[0°/90°]T方式铺层于钢模模具中,相邻两层氧化铝纤维无纬布之间均匀铺上一层陶瓷粒,得到五层结构已铺层材料,对已铺层材料进行脱水处理;
模压:将钢模置于油压机中,加热升温至150℃,保温1h后模压,模压压力为25MPa,模压后缓慢降温再脱模,得到生坯;
HPS:将生坯置于热压炉中,升温至400℃保温2h,提升压力至10MPa后,继续升温至1200℃热压烧结,保温2h后缓慢降温,得到氧化铝基陶瓷复合材料防弹板;
PIP:将氧化铝基陶瓷复合材料防弹板置于浸渍液铝溶胶中真空加压浸渍,之后置于高温炉升温至1200℃,在1200℃的烧结温度下常压烧结,保温2h后缓慢降温,在防弹板半成品表面裂解得到氧化铝涂层;重复操作2次。
得到的陶瓷复合材料板密度为2.91g/cm3,其抗压强度达到1123MPa,抗弯强度为286MPa,冲击强度1kJ/m2,断裂韧性为9.06MPa·m1/2
需要强调的是:以上仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。

Claims (10)

1.一种复合材料防弹板制备方法,其特征在于,包括以下步骤:
浸渍:在真空条件下将高性能纤维无纬布加压浸渍于浸渍液铝溶胶中,所述高性能纤维无纬布采用氧化铝纤维无纬布;
造粒:选用陶瓷基体粉体,所述陶瓷基粉体采用ɑ-Al2O3粉体,向陶瓷基体粉体中加入粘合剂铝溶胶后造粒,得到陶瓷粒;
铺层:将浸渍步骤得到的高性能纤维无纬布按[0°/90°]T方式铺层于模具中,相邻两层高性能纤维无纬布之间均匀铺上一层陶瓷粒,得到已铺层材料;
模压:加热升温至模压温度,保温一定时间后模压已铺层材料,模压后缓慢降温再脱模,得到生坯;
HPS:升温预热生坯并保温一段时间,之后加压并升温至烧结温度,热压烧结,保温一定时间后缓慢降温,得到复合材料防弹板;
PIP:将复合材料防弹板置于浸渍液铝溶胶中真空加压浸渍,之后常压烧结,保温一定时间后缓慢降温,在复合材料防弹板中裂解得到氧化铝;重复操作2~3次。
2.根据权利要求1所述复合材料防弹板制备方法,其特征是,陶瓷基粉体采用平均粒径1~5μm的ɑ-Al2O3粉体。
3.根据权利要求1所述复合材料防弹板制备方法,其特征是,所述浸渍步骤中,加压浸渍压力为2~5MPa。
4.根据权利要求3所述复合材料防弹板制备方法,其特征是,所述铝溶胶固含量10%~50%。
5.根据权利要求2所述复合材料防弹板制备方法,其特征是,所述造粒步骤中,铝溶胶与ɑ-Al2O3粉体重量比5:95~1:1,铝溶胶固含量10%~50%。
6.根据权利要求1所述复合材料防弹板制备方法,其特征是,所述铺层步骤中,对已铺层材料进行脱水处理。
7.根据权利要求1所述复合材料防弹板制备方法,其特征是,所述模压温度为120~150℃、压力为5~25MPa。
8.根据权利要求1所述复合材料防弹板制备方法,其特征是,所述HPS步骤中,预热温度为300~500℃,加压压力为5~25MPa,烧结温度为1000~1300℃,保温1~4h。
9.根据权利要求1所述复合材料防弹板制备方法,其特征是,所述PIP步骤中,加压浸渍压力为5~25MPa,烧结温度为1000~1300℃,保温1~2h。
10.一种复合材料防弹板,其特征在于,采用权利要求1~9任一项所述方法制备得到;包括按[0°/90°]T方式铺层的高性能纤维无纬布,烧结在相邻两层高性能纤维无纬布之间的陶瓷基体,以及裂解在复合材料防弹板中的氧化铝。
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