CN108068176B - 一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法 - Google Patents

一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法 Download PDF

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CN108068176B
CN108068176B CN201711427534.2A CN201711427534A CN108068176B CN 108068176 B CN108068176 B CN 108068176B CN 201711427534 A CN201711427534 A CN 201711427534A CN 108068176 B CN108068176 B CN 108068176B
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苗则波
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Wuhu Yangtze River Lifting Equipment Manufacture Co ltd
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Abstract

本发明公开了一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，先将分子筛进行高温活化后，再将海藻多糖用双氧水进行氧化后，加入玻璃纤维、活化后的分子筛、次磷酸铝进行混合反应后，以聚碳酸酯二醇、异二苯基甲烷二异氰酸酯为主要合成原料，氧化后的海藻多糖为天然交联剂，合成出氧化后海藻多糖改性聚碳酸酯型水性聚氨酯预聚体，之后进行乳化分散形成胶黏剂，再将牛皮纸经过改性后浸渍胶黏剂进行层压，本发明制备的胶合板具有可耐高温，耐磨，不含有毒害有机溶剂，无毒性，具有环保效果好，生产成本低等优点。

Description

一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法
技术领域
本发明涉及胶合板材料领域，确切地说是一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法。
背景技术
现有的建筑或者家具板材基本都是由木头制作，目前使用比较多的是合成木板，当前市场上所使用的合成木板在使用范围上比较宽广，各研究机构、高等院校在建造实验室也纷纷使用胶合板作为实验室台面材料，而合成木板由于材质的问题，属于易燃物质，另外合成木板会受潮或者遇水发生严重的变形，这样就大大的影响了板材的使用寿命。用木材合成板材其硬度通常是一定的，柔韧度不够，质地比较脆，影响使用寿命。
章云冉在《葡萄糖-丙烯酸酯改性聚碳酸酯型水性聚氨酯乳液的制备与性能研究》一文中通过聚碳酸酯二醇、异佛尔酮二异氰酸酯为主要合成原料，二羟甲基丙酸为亲水扩链剂，1，4-丁二醇为小分子扩链剂，合成出聚碳酸酯型水性聚氨酯乳液，用葡萄糖对聚碳酸酯型聚氨酯进行改性，并对它们进行了表征，得出综合性能较好，但目前市场上的胶合板使用较好的树脂胶合板使用时也存在许多问题如韧性不够容易损坏，耐腐蚀性能较差、耐酸碱性能较差等。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提高胶合板的耐高温性能与耐磨性，提供一种一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，制备的胶合板可耐高温具有阻燃效果。
本发明是通过以下技术方案实现的：
一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，包括以下步骤：
（1）将1.5-2重量份分子筛放在起放入马弗炉中在300-360℃温度下加热5-7小时，随炉冷却至140-160℃后出炉空冷，冷却后干燥后密封，待用；
（2）将3-5重量份海藻多糖加入60-80重量份水中于60-80℃充分搅拌1-2小时，然后将pH调至9-9.5，加入1-1.5重量份双氧水搅拌0.5-1心思，冷却后，加入5-15重量份玻璃纤维充分混合，再加入步骤（1）所得活化的分子筛继续搅拌，然后加入0.1-0.15重量份次磷酸铝高速混合均匀，待用；
（3）将25-30重量份聚碳酸酯二元醇与20-25二苯基甲烷二异氰酸酯,0.02-1重量份催化剂混合，在氮气保护中80-85℃反应15-20分钟后，加入适量丙酮稀释后反应3-4小时，加入5-10重量份环氧树脂继续反应1-2小时后降温至60-70℃，加入5-7重量份1,4丁二醇和步骤（2）的所得物反应1-12小时，加入适量三乙胺进行反应20-30分钟，中和至pH值为6-7，室温下反应20-30分钟，加入冰去离子水搅拌乳化分散后，加入1-2重量份氧化镁、1-2重量份硬脂酸锌搅拌均匀，加热回流1-2小时，待用；
（4）先将2-5重量份乙酸酐加入适量乙醇后，将7-9张牛皮纸浸泡到溶液中，使用超声波震荡，于40-50℃恒温水浴放置4-5小时，随后拿出，干燥后，使用步骤（3）所得物浸渍改性牛皮纸，烘干，堆叠，而后放入压机模板中,加热固化成型后,冷却既得所述耐高温聚碳酸酯型水性聚氨酯基胶合板。
步骤（1）所述的分子筛为5A分子筛。
步骤（2）所述的将pH调至9-9.5是用氢氧化钠或氨水进行调节。
步骤（3）所述环氧树脂为双酚A型环氧树脂。
步骤（4）所述加热固化成型是在预热130℃的压机模板中,加热至180℃进行热压1小时固化成型。
本发明的优点是：
本发明先将分子筛进行高温活化后，再将海藻多糖用双氧水进行氧化后，加入玻璃纤维、活化后的分子筛、次磷酸铝进行混合反应后，以聚碳酸酯二醇、异二苯基甲烷二异氰酸酯为主要合成原料，氧化后的海藻多糖为天然交联剂，合成出氧化后海藻多糖改性聚碳酸酯型水性聚氨酯预聚体，之后进行乳化分散形成胶黏剂，再将牛皮纸经过改性后浸渍胶黏剂进行层压，本发明活化后的5A分子筛进行活化后具有稳定作用，与次磷酸铝形成协同作用，氧化后的海藻多糖改善了机械强度、韧性和成膜性能，且在形成预聚体时加入了双酚A型环氧树脂，部分聚合到预聚体的长链上，预聚体引入酚羟基与之后改性牛皮纸时引入的酸酐发生了酯化反应，可达到增容作用，本发明制备的胶合板具有可耐高温，耐磨，不含有毒害有机溶剂，无毒性，具有环保效果好，生产成本低等优点。
具体实施方式
一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，包括以下步骤：
（1）将1.8重量份分子筛放在起放入马弗炉中在320℃温度下加热6小时，随炉冷却至150℃后出炉空冷，冷却后干燥后密封，待用；
（2）将4重量份海藻多糖加入70重量份水中于70℃充分搅拌1.5小时，然后将pH调至9-9.5，加入1-1.5重量份双氧水搅拌0.5-1小时，冷却后，加入10重量份玻璃纤维充分混合，再加入步骤（1）所得活化的分子筛继续搅拌，然后加入0.12重量份次磷酸铝高速混合均匀，待用；
（3）将28重量份聚碳酸酯二元醇与22二苯基甲烷二异氰酸酯,0.08重量份催化剂混合，在氮气保护中83℃反应18分钟后，加入适量丙酮稀释后反应3.5小时，加入8重量份环氧树脂继续反应1.5小时后降温至65℃，加入6重量份1,4丁二醇和步骤（2）的所得物反应8小时，加入适量三乙胺进行反应25分钟，中和至pH值为6-7，室温下反应25分钟，加入冰去离子水搅拌乳化分散后，加入1.5重量份氧化镁、1.5重量份硬脂酸锌搅拌均匀，加热回流1.5小时，待用；
（4）先将3重量份乙酸酐加入适量乙醇后，将8张牛皮纸浸泡到溶液中，使用超声波震荡，于45℃恒温水浴放置4.5小时，随后拿出，干燥后，使用步骤（3）所得物浸渍改性牛皮纸，烘干，堆叠，而后放入压机模板中,加热固化成型后,冷却既得所述耐高温聚碳酸酯型水性聚氨酯基胶合板。
步骤（1）所述的分子筛为5A分子筛。
步骤（2）所述的将pH调至9-9.5是用氢氧化钠或氨水进行调节。
步骤（3）所述环氧树脂为双酚A型环氧树脂。
步骤（4）所述加热固化成型是在预热130℃的压机模板中,加热至180℃进行热压1小时固化成型。

Claims (5)

1.一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，其特征在于，包括以下步骤： （1）将1.5-2重量份分子筛放入马弗炉中在300-360℃温度下加热5-7小时，随炉冷却至140-160℃后出炉空冷，冷却后干燥，后密封，待用；
（2）将3-5重量份海藻多糖加入60-80重量份水中于60-80℃充分搅拌1-2小时，然后将pH调至9-9.5，加入1-1.5重量份双氧水搅拌0.5-1小时，冷却后，加入5-15重量份玻璃纤维充分混合，再加入步骤（1）所得活化的分子筛继续搅拌，然后加入0.1-0.15重量份次磷酸铝高速混合均匀，待用；
（3）将25-30重量份聚碳酸酯二元醇与20-25重量份二苯基甲烷二异氰酸酯，0.02-1重量份催化剂混合，在氮气保护中80-85℃反应15-20分钟后，加入适量丙酮稀释后反应3-4小时，加入5-10重量份环氧树脂继续反应1-2小时后降温至60-70℃，加入5-7重量份1,4丁二醇和步骤（2）的所得物反应1-12小时，加入适量三乙胺进行反应20-30分钟，中和至pH值为6-7，室温下反应20-30分钟，加入冰去离子水搅拌乳化分散后，加入1-2重量份氧化镁、1-2重量份硬脂酸锌搅拌均匀，加热回流1-2小时，待用；
（4）先将2-5重量份乙酸酐加入适量乙醇后，将7-9张牛皮纸浸泡到乙酸酐溶液中，使用超声波震荡，于40-50℃恒温水浴放置4-5小时，随后拿出，干燥后，使用步骤（3）所得物浸渍改性牛皮纸，烘干，堆叠，而后放入压机模板中,加热固化成型后,冷却既得所述耐高温聚碳酸酯型水性聚氨酯基胶合板。
2.根据权利要求1一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，其特征在于，步骤（1）所述的分子筛为5A分子筛。
3.根据权利要求1一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，其特征在于，步骤（2）所述的将pH调至9-9.5是用氢氧化钠或氨水进行调节。
4.根据权利要求1一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，其特征在于，步骤（3）所述环氧树脂为双酚A型环氧树脂。
5.根据权利要求1一种耐高温聚碳酸酯型水性聚氨酯基胶合板的制备方法，其特征在于，步骤（4）所述加热固化成型是在预热130℃的压机模板中,加热至180℃进行热压1小时固化成型。
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