CN106626546A - 一种蜂窝芯材孔格规整性的控制方法 - Google Patents
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Abstract
本发明属于蜂窝芯材质量控制技术，涉及一种蜂窝芯材孔格规整性的控制方法。在蜂窝叠层板上制椭圆孔，当蜂窝叠层板展开成蜂窝芯材并浸胶后，将笔直的钢管或圆钢贯穿到整个孔内，固化蜂窝芯材，取出钢管或圆钢；蜂窝芯材受钢管或圆钢的纠正与限制，得到规整性孔格的蜂窝芯材。本技术整合了相关成熟技术，实现了低成本控制蜂窝芯材孔格的规整性，满足了部分特殊要求蜂窝芯材的制造。本发明巧妙的在蜂窝叠层板上制造孔，无论后续拉伸、定型、浸胶、净化、烘干工序蜂窝块外形如何变化，在蜂窝块固化时，将刚性工具插入所制孔中，利用刚性工具的刚度强迫蜂窝芯材孔格回到一条直线上。具有操作简便、蜂窝芯材孔格规整性好等特点。
Description
技术领域
本发明属于蜂窝芯材质量控制技术，涉及一种蜂窝芯材孔格规整性的控制方法。
背景技术
目前，芳纶纸蜂窝、玻璃布蜂窝及植物纤维蜂窝一般采用拉伸法制造，其工序包括：涂胶、压制、拉伸、定型、浸胶、净化、烘干、固化，定型后的蜂窝在浸胶、净化、烘干、固化时处于自由状态，其长度或宽度会因定型工艺参数设置、孔格尺寸大小、纸张厚薄不一样等因素出现无规律的变化，最终导致蜂窝芯材孔格不规整，影响蜂窝芯材质量和某些特殊要求蜂窝芯材的使用。
发明内容
本发明的目的是针对上述现有控制方法不足或不能满足部分特殊应用需求，提出一种蜂窝芯材孔格规整性的控制方法。
本发明的技术解决方案是：
(1)选择芳纶纸蜂窝叠层板、玻璃布蜂窝叠层板或者植物纤维纸蜂窝叠层板
(2)在步骤(1)所选叠层板上制备椭圆孔，椭圆孔短轴平行于蜂窝孔格的方向，椭圆孔长轴在叠层板端头的端点距叠层板端头不小于30mm；
(3)采用蜂窝芯材拉伸设备将步骤(2)的蜂窝叠层板展开成蜂窝芯材，使步骤(2)中的椭圆孔变成直径等于短轴尺寸的圆孔；
(4)将步骤(3)所述的蜂窝芯材在烘箱内进行高温处理，处理温度不低于180℃，时间不小于2.5h；
(5)将步骤(4)所述的蜂窝芯材浸渍树脂；
(6)将直径比椭圆孔短轴尺寸小0.5mm-2mm的钢管或圆钢插入到步骤(3)所述圆孔内；
(7)将步骤(6)所述的带有钢管或圆钢的蜂窝块放入烘箱进行固化，固化后取出钢管或圆钢，得到孔格规整的蜂窝芯材。
所述叠层板上制椭圆孔短轴的尺寸为30mm-60mm，长轴尺寸为短轴尺寸的1.3333倍，并且为贯穿性孔。展开时，展开方向的尺寸为层数×孔格边长×0.866。
所述叠层板一端制椭圆孔的数量为1-5个，具体数量根据叠层的宽度确定。
蜂窝叠层板的宽度为50mm-900mm，蜂窝叠层板孔格边长为1.83mm-11.0mm。
本发明具有的优点和有益效果是：
本发明在制备蜂窝叠层板后，拉伸前，进行制孔，可采用数控铣的办法，简便、快速，所制孔对蜂窝芯材制造的后续拉伸、定型、浸胶、净化、烘干、固化工序不产生任何影响。叠层板状态制孔确保了所制孔与蜂窝芯材孔格间位置的唯一性；在蜂窝固化前，将刚度大的笔直的钢管或圆刚插入到所制孔内，钢管或圆钢与所制孔之间形成紧密的配合，利用钢管或圆钢的刚度强迫蜂窝芯材孔格在一条直线上，固化后取出钢管或圆钢，得到孔格规整的蜂窝块。
本发明巧妙的在蜂窝叠层板上制造孔，无论后续拉伸、定型、浸胶、净化、烘干工序蜂窝块外形如何变化，在蜂窝块固化时，将刚性工具插入所制孔中，利用刚性工具的刚度强迫蜂窝芯材孔格回到一条直线上。具有操作简便、蜂窝芯材孔格规整性好等特点。而且，本发明不会因定型工艺参数设置、孔格尺寸大小、纸张厚薄不一样等因素而影响蜂窝芯材孔格的规整性。
附图说明
图1是蜂窝叠层板示意图(1叠层板)；
图2是制椭圆孔后的蜂窝叠层板示意图(1叠层板，2椭圆孔)；
图3插入圆钢的待固化的蜂窝块的示意图(3圆孔，4圆钢，5蜂窝块)。
图4是固化后蜂窝块示意图(3圆孔，5蜂窝块)。
具体实施方式
下面通过实施例对本发明的设计和制备技术做进一步详细说明。
如上面所述的蜂窝芯材孔格规整性的控制方法，设计技术步骤如下：
(1)选择芳纶纸蜂窝叠层板1、玻璃布蜂窝叠层板1或者植物纤维纸蜂窝叠层板1，蜂窝叠层板1孔格边长在1.83mm-11.0mm，蜂窝叠层板1的宽度在50mm-900mm。
(2)在铣床、钻床、雕刻机等具有孔加工能力的设备上，在蜂窝叠层板1两端制备短轴尺寸为30mm-60mm的一个或多个椭圆孔2，椭圆孔2长轴靠近蜂窝叠层板1端头的端点距蜂窝叠层板1的端头为30mm-50mm，椭圆孔2的长轴尺寸为短轴尺寸的1.3333倍，椭圆孔2的短轴与蜂窝芯材孔格的方向平行。
(3)在能拉伸蜂窝叠层板1的设备上将制椭圆孔2的蜂窝叠层板1拉伸成蜂窝块5，拉伸方向的尺寸与孔格边长的关系为：拉伸方向尺寸＝层数×孔格边长×0.866，或直到椭圆孔2变成圆孔3为止。
(4)将拉伸后的蜂窝块5放入烘箱中进稳定化处理，处温度180℃-220℃，保温时间为1h-2h。
(5)将高温处理后的蜂窝块5浸渍树脂，浸渍树脂包括酚醛树脂、环氧树脂、聚酰亚胺树脂、双马树脂，这些树脂的固化温度范围120℃-300℃。
(6)将浸渍树脂后的蜂窝块5进行净化，净化风速0.5m/s-5m/s，净化时间10min-90min。
(7)将净化后的蜂窝块5进行烘干处理，处理温度60℃-160℃，处理时间为30min-90min。
(8)重复步骤(5)到步骤(7)，直到蜂窝块5的密度达到要求值。
(9)将外径比步骤(2)所制椭圆孔的短轴小0.5mm-2mm的笔直的圆钢4或钢管4插入到所制孔3内，圆钢4或钢管4的长度比蜂窝块5的长度长50mm以上。
(10)将步骤(9)的组件在烘箱内固化，固化温度范围120℃-300℃，时间90min-120min。
(11)将步骤(9)的圆钢或钢管取出，得到孔格规则的蜂窝块5。
实施例1
一种蜂窝芯材孔格规整性的控制方法，其特征在于，设计和制造的步骤如下：
(1)选择孔格边长为2.75mm、纸厚为0.05mm的芳纶纸蜂窝叠层板，叠层板长度1650mm，宽度300mm，叠层的层数为924层。
(2)在数控铣床上，采用指铣刀、转速15000r/min，在叠层板端头中间位置制椭圆通孔。椭圆孔的短轴尺寸为33mm，长轴尺寸为44mm，长轴的端点距叠层板端头30mm，椭圆孔的短轴与蜂窝芯材孔格的方向平行，椭圆孔的长轴垂直蜂窝芯材孔格，椭圆孔的中心轴垂直蜂窝叠层板。
(3)在蜂窝拉伸机上将蜂窝板拉伸到2400mm长。
(4)将步骤(3)的蜂窝块放入烘箱内，设定温度为180℃±5℃，保温时间为2h。
(5)将步骤(4)或步骤(7)的蜂窝块浸渍符合《GJB 1331烧蚀材料用酚醛树脂规范》的酚醛树脂，树脂比重设为0.980g/cm3。
(6)将浸渍树脂后的蜂窝块进行净化，净化风速设定为0.5m/s，净化时间90min。
(7)将净化后的蜂窝块放入烘箱内，烘箱设定温度为90℃±5℃，保温时间为60min。
(8)重复步骤(5)、步骤(6)和步骤(7)各三次，蜂窝块密度为达到50.5kg/m3。
(9)将外径为32mm的壁厚为3mm的笔直的钢管插入到步骤2所制孔内。
(10)将步骤(9)的穿有钢管的组件放入烘箱内，设定温度为180℃±5℃，保温时间为90min。
(11)将步骤(10)的钢管取出。
实施例2
一种蜂窝芯材孔格规整性的控制方法，其特征在于，设计和制造的步骤如下：
(1)选择孔格边长为5mm、玻璃布厚度为0.1mm的玻璃布蜂窝叠层板，叠层板长度1330mm，宽度600mm，叠层的层数为346层。
(2)在数控铣床上，采用指铣刀、转速8000r/min，在叠层板两端头各制3个椭圆通孔，通孔中心之间间距150mm，通孔中心距叠层板两边150mm，椭圆孔长轴的端点距叠层板端头30mm。椭圆孔短轴的尺寸为35mm，长轴的尺寸为46.7mm，椭圆孔的短轴与蜂窝芯材孔格的方向平行，椭圆孔的长轴垂直蜂窝芯材孔格，椭圆孔的中心轴垂直蜂窝叠层板。
(3)在蜂窝拉伸机上将玻璃布蜂窝板拉伸到1500mm长。
(4)将步骤3的蜂窝块放入烘箱内，设定温度为120℃±5℃，保温时间为1h。
(5)将步骤(4)的或步骤(8)的玻璃布蜂窝块浸渍聚酰亚胺树脂，树脂比重设为0.960g/cm3。
(6)将浸渍树脂后的蜂窝块进行净化，净化风速设定为1.0m/s，净化时间60min。
(7)将净化后的蜂窝块放入烘箱内，执行工艺：升温至120℃±5℃，保温时间为60min，升温至200℃，保温90min，降温至≤60℃。
(8)重复步骤(5)、步骤(6)和步骤(7)各2次，蜂窝块密度为达到56.0kg/m3。
(9)将外径为34mm的壁厚为3mm的6根笔直的钢管插入到步骤2所制孔内。
(10)将步骤(9)的穿有笔直钢管的组件放入烘箱内，设定温度为260℃±5℃，保温时间为90min。
(11)将步骤(10)钢管取出。
Claims (4)
1.一种蜂窝芯材孔格规整性的控制方法，其特征在于：
(1)选择芳纶纸蜂窝叠层板、玻璃布蜂窝叠层板或者植物纤维纸蜂窝叠层板
(2)在步骤(1)所选叠层板上制备椭圆孔，椭圆孔短轴平行于蜂窝孔格的方向，椭圆孔长轴在叠层板端头的端点距叠层板端头不小于30mm；
(3)采用蜂窝芯材拉伸设备将步骤(2)的蜂窝叠层板展开成蜂窝芯材，使步骤(2)中的椭圆孔变成直径等于短轴尺寸的圆孔；
(4)将步骤(3)所述的蜂窝芯材在烘箱内进行高温处理，处理温度不低于180℃，时间不小于2.5h；
(5)将步骤(4)所述的蜂窝芯材浸渍树脂；
(6)将直径比椭圆孔短轴尺寸小0.5mm-2mm的钢管或圆钢插入到步骤(3)所述圆孔内；
(7)将步骤(6)所述的带有钢管或圆钢的蜂窝块放入烘箱进行固化，固化后取出钢管或圆钢，得到孔格规整的蜂窝芯材。
2.根据权利要求1所述的一种蜂窝芯材孔格规整性的控制方法，其特征在于，所述叠层板上制椭圆孔短轴的尺寸为30mm-60mm，长轴尺寸为短轴尺寸的1.3333倍，并且为贯穿性孔。展开时，展开方向的尺寸为层数×孔格边长×0.866。
3.根据权利要求1所述的一种蜂窝芯材孔格规整性的控制方法，其特征在于，所述叠层板一端制椭圆孔的数量为1-5个，具体数量根据叠层的宽度确定。
4.根据权利要求1所述的一种蜂窝芯材孔格规整性的控制方法，其特征在于，蜂窝叠层板的宽度为50mm-900mm，蜂窝叠层板孔格边长为1.83mm-11.0mm。
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| CN107639922A (zh) * | 2017-10-25 | 2018-01-30 | 中国航空工业集团公司基础技术研究院 | 一种制备内隔板蜂窝芯材的装置及方法 |
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| JPH02213547A (ja) * | 1989-02-14 | 1990-08-24 | Natl House Ind Co Ltd | 建築用板 |
| CN203077702U (zh) * | 2013-01-28 | 2013-07-24 | 苏州芳磊蜂窝复合材料有限公司 | 一种打孔纸蜂窝芯 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02213547A (ja) * | 1989-02-14 | 1990-08-24 | Natl House Ind Co Ltd | 建築用板 |
| CN203077702U (zh) * | 2013-01-28 | 2013-07-24 | 苏州芳磊蜂窝复合材料有限公司 | 一种打孔纸蜂窝芯 |
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