CN106894159B - 一种耐超高温高压高透气性透气毡及其制备方法 - Google Patents

一种耐超高温高压高透气性透气毡及其制备方法 Download PDF

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CN106894159B
CN106894159B CN201710179903.4A CN201710179903A CN106894159B CN 106894159 B CN106894159 B CN 106894159B CN 201710179903 A CN201710179903 A CN 201710179903A CN 106894159 B CN106894159 B CN 106894159B
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胡仲杰
岑婵芳
傅武兴
胡潇
邓鹏鹏
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Shanghai Lek Tech Ltd By Share Ltd
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    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
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    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
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    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
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    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
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Abstract

本发明公开了一种耐超高温高压高透气性透气毡,由50~80%改性尼龙66短纤、20~50%聚酯短纤混合针刺制备。本发明还公开一种耐超高温高压高透气性透气毡的制备方法。本发明的透气毡使用性能好,面密度均匀,无浮毛,不掉毛,常温透气性能优良,热压罐固化时的导气能力突出,可保证预浸料层压件的高温高压密实成型,最高使用温度可达230℃,承受压力可达1.0Mpa。本发明的制备方法工艺简单,成本较低,原料大多可在市场购买,常规针刺设备即可生产,设备投入小。

Description

一种耐超高温高压高透气性透气毡及其制备方法
技术领域
本发明涉及热压罐成型复合材料技术领域,特别涉及一种耐超高温高压高透气性透气毡及其制备方法。
背景技术
真空袋热压罐成型是一种广泛运用于复合材料零部件的成型方法,通过封装将铺叠完成的毛坯形成一密封系统,进而通过抽真空以排出预浸料中含有的低分子挥发物和夹杂在预浸料中的气体,从而得到内部质量合格的致密复材件。
透气毡作为实现固化时小分子气体排出的通道,其在高温高压条件下的导气能力将严重影响复合材料制件性能的提升。随着国内航空航天事业的发展,先进复合材料的应用获得了良好的发展机遇,对高性能辅助材料的需求也日益旺盛。目前,透气毡的高温高压透气性性能不佳,经常会发生掉毛的现象,从而影响到复合材料质量。
发明内容
本发明的目的之一在于:针对现有技术的不足而提供一种耐超高温高压高透气性透气毡,该透气毡使用性能好,面密度均匀,无浮毛,不掉毛,常温透气性能优良,热压罐固化时的导气能力突出。
本发明的目的之二在于:提供一种制备上述的耐超高温高压高透气性透气毡的方法。
本发明所解决的技术问题可以采用以下技术方案来实现:
一种耐超高温高压高透气性透气毡,其特征在于,由50~80%改性尼龙66短纤、20~50%聚酯短纤混合针刺制备。
在本发明的一个优选实施例中,耐超高温高压高透气性透气毡由80%改性尼龙66短纤、20%聚酯短纤混合针刺制备。
在本发明的一个优选实施例中,所述改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比90~99:0.5~5:0.5~5,经双螺杆共混挤出造粒后纺丝制备。
在本发明的一个优选实施例中,改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比97:2:1。
在本发明的一个优选实施例中,所述聚酯短纤为熔体直纺制备。
在本发明的一个优选实施例中,所述改性尼龙66短纤、聚酯短纤的规格为(3~40)dtex×(30~100)mm。
一种如上述任一技术方案所述的耐超高温高压高透气性透气毡的制备方法,其特征在于,包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,开包机按照设定的重量百分比配比混合后加入到预开松机初步松解;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡。
在本发明的一个优选实施例中,所述开包机的角钉帘速度为5~15hz。
在本发明的一个优选实施例中,所述开松机的打手速度为50~100r/min。
在本发明的一个优选实施例中,所述梳理机的锡林速度为40~50hz,锡林与道夫的线速比1~2,罗拉速度为20~30hz。
在本发明的一个优选实施例中,所述厚网的宽度为1.4~1.8m,铺网层数为3~6层。
由于采用了如上的技术方案,本发明的透气毡使用性能好,面密度均匀,无浮毛,不掉毛,常温透气性能优良,热压罐固化时的导气能力突出,可保证预浸料层压件的高温高压密实成型,最高使用温度可达230℃,承受压力可达1.0Mpa。本发明的制备方法工艺简单,成本较低,原料大多可在市场购买,常规针刺设备即可生产,设备投入小。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面进一步阐述本发明。
一种耐超高温高压高透气性透气毡,由50~80%改性尼龙66短纤、20~50%聚酯短纤混合针刺制备。改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比90~99:0.5~5:0.5~5,经双螺杆共混挤出造粒后纺丝制备。
实施例1
一种耐超高温高压高透气性透气毡,由70%改性尼龙66短纤、30%聚酯短纤混合针刺制备。改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比99:0.5:0.5,经双螺杆共混挤出造粒后纺丝制备。具体该实施例的制备方法包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,聚酯短纤为熔体直纺制备,改性尼龙66短纤、聚酯短纤的规格为3dtex×30mm。开包机按照设定的重量百分比配比7:3混合后加入到预开松机初步松解,开包机的角钉帘速度为5hz;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合,开松机的打手速度为50r/min;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳,梳理机的锡林速度为40hz,锡林与道夫的线速比1,罗拉速度为20hz;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调,厚网的宽度为1.4m,铺网层数为3层;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡。
实施例2
一种耐超高温高压高透气性透气毡,由80%改性尼龙66短纤、20%聚酯短纤混合针刺制备。改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比97:2:1,经双螺杆共混挤出造粒后纺丝制备。具体该实施例的制备方法包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,聚酯短纤为熔体直纺制备,改性尼龙66短纤、聚酯短纤的规格为12dtex×45mm。开包机按照设定的重量百分比配比8:2混合后加入到预开松机初步松解,开包机的角钉帘速度为7hz;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合,开松机的打手速度为60r/min;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳,梳理机的锡林速度为42hz,锡林与道夫的线速比1.5,罗拉速度为22hz;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调,厚网的宽度为1.5m,铺网层数为4层;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡。
实施例3
一种耐超高温高压高透气性透气毡,由50%改性尼龙66短纤、50%聚酯短纤混合针刺制备。改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比97:0.5:2.5,经双螺杆共混挤出造粒后纺丝制备。具体该实施例的制备方法包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,聚酯短纤为熔体直纺制备,改性尼龙66短纤、聚酯短纤的规格为20dtex×65mm。开包机按照设定的重量百分比配比5:5混合后加入到预开松机初步松解,开包机的角钉帘速度为10hz;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合,开松机的打手速度为75r/min;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳,梳理机的锡林速度为45hz,锡林与道夫的线速比1.5,罗拉速度为25hz;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调,厚网的宽度为1.6m,铺网层数为5层;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡。
实施例4
一种耐超高温高压高透气性透气毡,由60%改性尼龙66短纤、40%聚酯短纤混合针刺制备。改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比90:5:5,经双螺杆共混挤出造粒后纺丝制备。具体该实施例的制备方法包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,聚酯短纤为熔体直纺制备,改性尼龙66短纤、聚酯短纤的规格为30dtex×85mm。开包机按照设定的重量百分比配比6:4混合后加入到预开松机初步松解,开包机的角钉帘速度为12hz;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合,开松机的打手速度为85r/min;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳,梳理机的锡林速度为47hz,锡林与道夫的线速比2,罗拉速度为27hz;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调,厚网的宽度为1.7m,铺网层数为6层;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡。
实施例5
一种耐超高温高压高透气性透气毡,由90%改性尼龙66短纤、10%聚酯短纤混合针刺制备。改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比95:0.6:4.4,经双螺杆共混挤出造粒后纺丝制备。具体该实施例的制备方法包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,聚酯短纤为熔体直纺制备,改性尼龙66短纤、聚酯短纤的规格为40dtex×100mm。开包机按照设定的重量百分比配比9:1混合后加入到预开松机初步松解,开包机的角钉帘速度为15hz;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合,开松机的打手速度为100r/min;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳,梳理机的锡林速度为50hz,锡林与道夫的线速比2,罗拉速度为30hz;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调,厚网的宽度为1.8m,铺网层数为6层;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡。
上述各实施例与现有技术的透气毡对比,如下表1:
Figure BDA0001253363410000081
由上表可知,本发明的透气毡使用性能好,面密度均匀,无浮毛,不掉毛,常温透气性能优良,热压罐固化时的导气能力突出,可保证预浸料层压件的高温高压密实成型,最高使用温度可达230℃,承受压力可达1.0Mpa。本发明的制备方法工艺简单,成本较低,原料大多可在市场购买,常规针刺设备即可生产,设备投入小。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (1)

1.一种耐超高温高压高透气性透气毡,其特征在于,由50%改性尼龙66短纤、50%聚酯短纤混合针刺制备;
所述改性尼龙66短纤为尼龙66切片与热稳定剂、抗氧剂按一定配比97:0.5:2.5,经双螺杆共混挤出造粒后纺丝制备;
所述聚酯短纤为熔体直纺制备;
所述改性尼龙66短纤、聚酯短纤的规格为20dtex×65mm;
一种耐超高温高压高透气性透气毡的制备方法,包括下列步骤:
(1)将改性尼龙66短纤、聚酯短纤拆包后分别手工加入到两台开包机料仓中,开包机按照设定的重量百分比配比5:5混合后加入到预开松机初步松解;
(2)经由步骤(1)处理后得到的松解纤维由气流直接送入精开松机进一步松解及均匀混合;
(3)经由步骤(2)处理后得到的混合纤维经由风机送入棉箱储存;
(4)经由步骤(3)处理后得到的混合纤维经由输送帘送入梳理机中,经过梳理机中锡林、罗拉等辊筒的相互作用将混合纤维分梳;
(5)经由步骤(4)处理后得到的纤网经四帘式铺网机折叠成厚网,成网宽度、铺网层数可调;
(6)经由步骤(5)处理后得到的厚网依次送入预针刺机、主针刺机、环式针刺机以及管式针刺机中织成布,将织成的布切边并卷绕后,制得透气毡;
所述开包机的角钉帘速度为10hz;
所述开松机的打手速度为75r/min;
所述梳理机的锡林速度为45hz,锡林与道夫的线速比1.5,罗拉速度为25hz;
所述厚网的宽度为1.6m,铺网层数为5层。
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