CN112080936A - 一种5g基站防护用复合材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种5G基站防护用复合材料及其制备方法,采用高强度网格玻璃纤维织物为基材,表面涂覆聚四氟乙烯树脂,玻璃纤维网格织物孔隙率为25‑50%,采用浸涂或刮涂的方式将1‑8层涂覆聚四氟乙烯树脂涂覆于玻璃纤维织物表面,并在外层的PTFE树脂内适当加入光催化剂。本发明为了保证玻璃纤维不会出现断点,先采用甘油对玻璃纤维进行表面处理,然后用酶处理液进行浸渍处理,烘干后再进行冷冻,并对冷冻后的玻璃纤维再次进行浸渍处理,最后用冲洗液和水分别进行冲洗,烘干。本发明中采用甘油+两次酶溶液+冷冻的方式对玻璃纤维进行处理,与涂覆的聚四氟乙烯树脂的结合效果非常好,即使在低温或者潮湿的条件下长期使用,也不会形成断点。
Description
技术领域
本发明涉及复合材料技术领域,尤其涉及一种5G基站防护用复合材料及其制备方法。
背景技术
5G网络是第五代移动通信网络,具有速率极高(eMBB)、容量极大(mMTC)和时延极低(URLLC)三个特征。改性塑料是5G技术实现必需的基础原材料之一,在智能手机、平板电脑(Ipad)、个人数码助理(PDA)、笔记本电脑、电子书阅读器、可穿戴设备、掌上游戏机和智能金融终端机(拉卡拉、POS机)、智能信息终端机、智能视频影音终端机、智能家居、智能家电、智能传媒、智能汽车、智能交通、智能物流运输、智能城市等领域广泛应用。通讯方式的巨大改变使得材料人必须深入研究和设计改性塑料的介电性能。5G基站基于多天线Massive MIMO(大规模输入输出)、新型编码LDPC/Polar等5G先进新技术,不能在4G基站的基础上进行升级,必须重新搭建。
玻璃纤维织物作为理想的增强材料,以其优异的耐腐蚀性,耐高温性,低廉的价格,超高的强度,应用于生活中的各个方面,在高性能纤维领域占有十分重要的地位。
玻璃纤维拉丝过程中常用的浸润剂,主要分为增强型浸润剂和纺织型浸润剂,对于建筑膜材中的玻璃纤维织物,主要使用的是纺织型浸润剂。国内外现有的纺织型浸润剂为石蜡型、淀粉型,而随着玻璃纤维池窑拉丝工艺的发展,目前均以淀粉型浸润剂为主。虽然淀粉型浸润剂附着于玻璃纤维织物表面时,便于织造,但是不利于玻璃纤维织物与树脂的结合,使复合材料粘结强度差,影响材料寿命,故需要先去除浸润剂。
近年来,关于去除纤维表面浸润剂方法,国内外论文和发明专利主要为中高温热清洗,是将玻璃纤维织物放置于300-500℃高温环境下,煅烧处理1-5min。或者,采用中高温度长时间煅烧,将玻璃纤维织物放置于300-400℃条件下,煅烧处理12-30h。然而,增加煅烧温度或者增加煅烧时间,不仅增加了能耗,导致制品成本增加,而且使玻璃纤维的力学性能大幅度下降,纤维颜色泛黄,导致制品外观和手感变差。中国发明专利CN108252105A公开了一种玻璃纤维织物的表面处理方法,该方法采用酶溶液对玻璃纤维进行表面处理,可以得强度保持率高的玻璃纤维织物。但是该方法在低温或者长期潮湿的使用条件下与涂覆的聚四氟乙烯树脂的结合效果不佳,容易形成断点。故为了提升玻璃纤维织物与涂覆的聚四氟乙烯树脂的结合效果,保证在潮湿和雷雨天气不漏点,延长材料的使用寿命,本发明提供了一种5G基站防护用复合材料的制备方法。
发明内容
基于背景技术存在的技术问题,本发明提出了一种5G基站防护用复合材料的制备方法。
本发明的技术方案如下:
一种5G基站防护用复合材料,采用高强度网格玻璃纤维织物为基材,表面涂覆聚四氟乙烯树脂(PTFE),玻璃纤维网格织物孔隙率为25-50%,采用浸涂或刮涂的方式将1-8层涂覆聚四氟乙烯树脂涂覆于玻璃纤维织物表面,并在外层的PTFE树脂内加入光催化剂。
一种5G基站防护用复合材料的制备方法,包括以下步骤:
A、将网格孔隙率为25-50%的玻璃纤维织物在高浓度甘油水溶液中浸渍处理2-3h;
B、取出后在50-70℃酶溶液中进行浸渍80-150s,120-130℃烘干5-8min;取出后迅速放入零下35-零下30℃的低温环境中冷冻10-15min;
C、取出后再次采用50-70℃酶溶液中进行浸渍30-50s,采用冲洗液和水分别进行冲洗,烘干后,即可得到预处理的玻璃纤维织物;
D、将玻璃纤维织物在20-60wt%的聚四氟乙烯浸渍液中浸渍12-30s;然后将玻璃纤维织物在100-150℃下烘干30-90s,然后在200-300℃下固化60-120s;
E、将固化后的玻璃纤维织物在350-400℃下高温烧结30-90s,即可。
优选的,所述的步骤A中,所述的高浓度甘油水溶液中,甘油的重量百分比为55-65%。
优选的,所述的步骤B中,所述的酶溶液含有过氧化氢酶、α-淀粉酶、β-淀粉酶中的一种或多种,所述酶溶液的浓度为0.5-1.0wt%。
优选的,所述的步骤B中,所述的酶溶液中还含有0.1-0.2wt%的科宁润湿剂875。
优选的,所述的步骤C中,所述的酶溶液中含有2.8-3.5wt%过氧化氢酶和0.5-1.2wt%的科宁润湿剂875。
优选的,所述的冲洗液由双氧水和氨水混合组成;双氧水和氨水的质量比为(8-15):1。
优选的,所述的步骤D中,所述的步骤D中固化后的玻璃纤维织物继续重复进行步骤D,重复次数为1-7次。
优选的,所述的步骤D中,所述的聚四氟乙烯浸渍液的制备方法,包括以下步骤:
步骤一、将分散剂和氯化钠在水中混匀,加入增韧材料,混匀后得到改性增韧剂分散液;
步骤二、将改性增韧剂分散液过滤后得改性增韧剂,将改性增韧剂和光催化剂分散于聚四氟乙烯浸渍液中,即得改性聚四氟乙烯浸渍液。
进一步优选的,所述增韧材料为氧化石墨烯、石墨烯、二氧化硅、碳纳米管中一种或多种。
本发明的有益之处在于:本发明的5G基站防护用复合材料,采用高强度网格玻璃纤维织物为基材,表面涂覆聚四氟乙烯树脂(PTFE),玻璃纤维网格织物孔隙率为25-50%,采用浸涂或刮涂的方式将1-8层涂覆聚四氟乙烯树脂涂覆于玻璃纤维织物表面,并在外层的PTFE树脂内适当加入光催化剂。为了保证玻璃纤维在低温或者长期潮湿的使用条件下不会出现断点,先采用甘油对玻璃纤维进行表面处理,然后用酶处理液进行浸渍处理,烘干后再进行冷冻,并对冷冻后的玻璃纤维再次进行浸渍处理,最后用冲洗液和水分别进行冲洗,烘干,即可。本发明中采用甘油+两次酶溶液+冷冻的方式对玻璃纤维进行处理,不但不会对玻璃纤维的强度造成影响,而且处理后的玻璃纤维与涂覆的聚四氟乙烯树脂的结合效果非常好,即使在低温或者潮湿的条件下长期使用,也不会形成断点。
具体实施方式
下面通过具体实施例,对本发明的技术方案作进一步的具体说明。应当理解,本发明的实施并不局限于下面的实施例,对本发明所做的任何形式上的变通和/或改变都将落入本发明保护范围。
在本发明中,若非特指,所有的份、百分比均为重量单位,所采用的设备和原料等均可从市场购得或是本领域常用的。下述实施例中的方法,如无特别说明,均为本领域的常规方法。
下述实施例中所用的试剂,如无特殊说明,可以从常规生化试剂商店购买得到。
实施例1:
一种5G基站防护用复合材料的制备方法,包括以下步骤:
A、将玻璃纤维织物在高浓度甘油水溶液中浸渍处理2.5h;
B、取出后在55℃酶溶液中进行浸渍125s,120℃烘干6min;取出后迅速放入零下32℃的低温环境中冷冻13min;
C、取出后再次采用65℃酶溶液中进行浸渍40s,采用冲洗液和水分别进行冲洗,烘干后,即可得到预处理的玻璃纤维织物;
D、将玻璃纤维织物在35wt%的聚四氟乙烯浸渍液中浸渍25s;然后将玻璃纤维织物在130℃下烘干50s,然后在280℃下固化75s;
E、将固化后的玻璃纤维织物在380℃下高温烧结60s,即可。
所述的步骤A中,所述的高浓度甘油水溶液中,甘油的重量百分比为62%。
所述的步骤B中,所述的酶溶液中含有0.75wt%过氧化氢酶和0.15wt%的科宁润湿剂875。
所述的步骤C中,所述的酶溶液中含有3.2wt%过氧化氢酶和0.85wt%的科宁润湿剂875。
所述的冲洗液由双氧水和氨水混合组成;双氧水和氨水的质量比为12:1。
所述的步骤D中,所述的步骤D中固化后的玻璃纤维织物继续重复进行步骤D,重复次数为5次。
所述的步骤D中,所述的聚四氟乙烯浸渍液的制备方法,包括以下步骤:
步骤一、将十二烷基苯磺酸钠和氯化钠在水中混匀,加入石墨烯,混匀后得到改性增韧剂分散液;
步骤二、将改性增韧剂分散液过滤后得改性增韧剂,将改性增韧剂和纳米二氧化钛分散于聚四氟乙烯浸渍液中,即得改性聚四氟乙烯浸渍液。
所述的步骤一中,所述的十二烷基苯磺酸钠和氯化钠与水的质量比分别为1:35和1:12;所述的石墨烯与十二烷基苯磺酸钠的质量比为1:18。
所述的步骤二中,所述的纳米二氧化钛的加入量为0.8%。
实施例2:
一种5G基站防护用复合材料的制备方法,包括以下步骤:
A、将玻璃纤维织物在高浓度甘油水溶液中浸渍处理3h;
B、取出后在52℃酶溶液中进行浸渍148s,122℃烘干5min;取出后迅速放入零下34.5℃的低温环境中冷冻11min;
C、取出后再次采用70℃酶溶液中进行浸渍32s,采用冲洗液和水分别进行冲洗,烘干后,即可得到预处理的玻璃纤维织物;
D、将玻璃纤维织物在60wt%的聚四氟乙烯浸渍液中浸渍12s;然后将玻璃纤维织物在150℃下烘干30s,然后在300℃下固化60s;
E、将固化后的玻璃纤维织物在400℃下高温烧结30s,即可。
所述的步骤A中,所述的高浓度甘油水溶液中,甘油的重量百分比为65%。
所述的步骤B中,所述的酶溶液含有0.45wt%的α-淀粉酶、0.25wt%的β-淀粉酶和0.2wt%的科宁润湿剂875。
所述的步骤C中,所述的酶溶液中含有3.0wt%过氧化氢酶和1.2wt%的科宁润湿剂875。
所述的冲洗液由双氧水和氨水混合组成;双氧水和氨水的质量比为8:1。
所述的步骤D中,所述的步骤D中固化后的玻璃纤维织物继续重复进行步骤D,重复次数为7次。
所述的步骤D中,所述的聚四氟乙烯浸渍液的制备方法,包括以下步骤:
步骤一、将十二烷基苯磺酸钠和氯化钠在水中混匀,加入氧化石墨烯,混匀后得到改性增韧剂分散液;
步骤二、将改性增韧剂分散液过滤后得改性增韧剂,将改性增韧剂和纳米二氧化钛分散于聚四氟乙烯浸渍液中,即得改性聚四氟乙烯浸渍液。
所述的步骤一中,所述的十二烷基苯磺酸钠和氯化钠与水的质量比分别为1:30和1:15;所述的氧化石墨烯与十二烷基苯磺酸钠的质量比为1:10。
所述的步骤二中,所述的纳米二氧化钛的加入量为1.2%。
实施例3:
一种5G基站防护用复合材料的制备方法,包括以下步骤:
A、将玻璃纤维织物在高浓度甘油水溶液中浸渍处理2h;
B、取出后在70℃酶溶液中进行浸渍85s,130℃烘干8min;取出后迅速放入零下32℃的低温环境中冷冻15min;
C、取出后再次采用55℃酶溶液中进行浸渍45s,采用冲洗液和水分别进行冲洗,烘干后,即可得到预处理的玻璃纤维织物;
D、将玻璃纤维织物在20wt%的聚四氟乙烯浸渍液中浸渍30s;然后将玻璃纤维织物在100℃下烘干90s,然后在200℃下固化120s;
E、将固化后的玻璃纤维织物在350℃下高温烧结90s,即可。
所述的步骤A中,所述的高浓度甘油水溶液中,甘油的重量百分比为55%。
所述的步骤B中,所述的酶溶液含有0.3wt%过氧化氢酶、0.2wt%β-淀粉和0.1wt%的科宁润湿剂875。
所述的步骤C中,所述的酶溶液中含有3.3wt%过氧化氢酶和0.7wt%的科宁润湿剂875。
所述的冲洗液由双氧水和氨水混合组成;双氧水和氨水的质量比为15:1。
所述的步骤D中,所述的步骤D中固化后的玻璃纤维织物继续重复进行步骤D,重复次数为1次。
步骤一、将十二烷基苯磺酸钠和氯化钠在水中混匀,加入碳纳米管,混匀后得到改性增韧剂分散液;
步骤二、将改性增韧剂分散液过滤后得改性增韧剂,将改性增韧剂和纳米二氧化钛分散于聚四氟乙烯浸渍液中,即得改性聚四氟乙烯浸渍液。
所述的步骤一中,所述的十二烷基苯磺酸钠和氯化钠与水的质量比分别为1:40和1:10;所述的石墨烯与十二烷基苯磺酸钠的质量比为1:20。
所述的步骤二中,所述的纳米二氧化钛的加入量为0.5%。
对比例1
将实施例1中的步骤A去除,其余配比和处理方法不变。
对比例2
将实施例1中的冷冻处理步骤去除,其余配比和处理方法不变。
对比例3
将实施例1中的科宁润湿剂875替换为JFC型脂肪醇聚氧乙烯醚,其余配比和处理方法不变。
应用测试
检测本发明实施例1-3和对比例1-3的复合材料并与CN 108265517A中的应用例1(对照例)进行对比。
采用耐折试验机,对5G基站防护用复合材料进行耐折性能测试,其结果如表1-3所示。
表1 室温下的5G基站防护用复合材料耐折性能
实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 | 对比例3 | 对照例 | |
耐折性 (次断裂) | 22772 | 22790 | 22247 | 22531 | 22635 | 22017 | 22388 |
表2 -40℃冷冻处理24h后的5G基站防护用复合材料耐折性能
实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 | 对比例3 | 对照例 | |
耐折性 (次断裂) | 22657 | 22871 | 22129 | 12048 | 1271 | 8039 | 957 |
表3 25℃,95%R.H处理720h后的5G基站防护用复合材料耐折性能
实施例1 | 实施例2 | 实施例3 | 对比例1 | 对比例2 | 对比例3 | 对照例 | |
耐折性 (次断裂) | 21781 | 21977 | 20553 | 3819 | 14716 | 17037 | 2694 |
由以上测试数据可知,本发明的复合材料在室温下、低温下和潮湿环境中具有非常好的耐折性能,不容易形成断点。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种5G基站防护用复合材料,其特征在于,采用高强度网格玻璃纤维织物为基材,表面涂覆聚四氟乙烯树脂,玻璃纤维网格织物孔隙率为25-50%,采用浸涂或刮涂的方式将1-8层涂覆聚四氟乙烯树脂涂覆于玻璃纤维织物表面,并在外层的PTFE树脂内加入光催化剂。
2.一种5G基站防护用复合材料的制备方法,其特征在于,该方法包括以下步骤:
A、将网格孔隙率为25-50%的玻璃纤维织物在高浓度甘油水溶液中浸渍处理2-3h;
B、取出后在50-70℃酶溶液中进行浸渍80-150s,120-130℃烘干5-8min;取出后迅速放入零下35-零下30℃的低温环境中冷冻10-15min;
C、取出后再次采用50-70℃酶溶液中进行浸渍30-50s,采用冲洗液和水分别进行冲洗,烘干后,即可得到预处理的玻璃纤维织物;
D、将玻璃纤维织物在20-60wt%的聚四氟乙烯浸渍液中浸渍12-30s;然后将玻璃纤维织物在100-150℃下烘干30-90s,然后在200-300℃下固化60-120s;
E、将固化后的玻璃纤维织物在350-400℃下高温烧结30-90s,得到复合材料产品。
3.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的步骤A中,所述的高浓度甘油水溶液中,甘油的重量百分比为55-65%。
4.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的步骤B中,所述的酶溶液含有过氧化氢酶、α-淀粉酶、β-淀粉酶中的一种或多种,所述酶溶液的浓度为0.5-1.0wt%。
5.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的步骤B中,所述的酶溶液中还含有0.1-0.2wt%的科宁润湿剂875。
6.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的步骤C中,所述的酶溶液中含有2.8-3.5wt%过氧化氢酶和0.5-1.2wt%的科宁润湿剂875。
7.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的冲洗液由双氧水和氨水混合组成;双氧水和氨水的质量比为(8-15):1。
8.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的步骤D中,所述的步骤D中固化后的玻璃纤维织物继续重复进行步骤D,重复次数为1-7次。
9.如权利要求2所述的5G基站防护用复合材料的制备方法,其特征在于,所述的步骤D中,所述的聚四氟乙烯浸渍液的制备方法包括以下步骤:
步骤一、将分散剂和氯化钠在水中混匀,加入增韧材料,混匀后得到改性增韧剂分散液;
步骤二、将改性增韧剂分散液过滤后得改性增韧剂,将改性增韧剂和光催化剂分散于聚四氟乙烯浸渍液中,即得改性聚四氟乙烯浸渍液。
10.如权利要求9所述的5G基站防护用复合材料的制备方法,其特征在于,所述增韧材料为氧化石墨烯、石墨烯、二氧化硅、碳纳米管中一种或多种。
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