CN106810151A - 一种乳化石蜡包覆改性再生eps粒子‑硅酸盐水泥复合发泡保温板及其制备方法 - Google Patents

一种乳化石蜡包覆改性再生eps粒子‑硅酸盐水泥复合发泡保温板及其制备方法 Download PDF

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CN106810151A
CN106810151A CN201611175341.8A CN201611175341A CN106810151A CN 106810151 A CN106810151 A CN 106810151A CN 201611175341 A CN201611175341 A CN 201611175341A CN 106810151 A CN106810151 A CN 106810151A
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吴传兴
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Maanshan Jiechuang Plastic Science & Technology Co Ltd
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Abstract

本发明公开了一种乳化石蜡包覆改性再生EPS粒子‑硅酸盐水泥复合发泡保温板，该发泡保温板将成本低廉的废旧聚苯乙烯泡沫塑料进行改性处理，得到具有良好力学性能和高热稳定性再生EPS粒子，并利用纳米碳溶胶、EVA乳液改性的乳化石蜡对其进行表面包覆处理，有效的提高了再生EPS粒子与水泥浆料的界面结合强度，附着力更强，进一步促进了水泥浆料的水合作用，提高胶料内部结构均匀程度，降低内部应力，其与硅酸盐水泥、粉煤灰、陶瓷纤维绒、膨胀蛭石粉、碳酸锆铵等原料协同作用，经过发泡后制得了高抗裂、抗水、保温、抗冲击、阻燃耐火的复合板材，产品经济实用，耐用环保，生产过程简单高效，应用前景良好。

Description

一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保 温板及其制备方法
技术领域
本发明涉及水泥发泡保温板技术领域，尤其涉及一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板及其制备方法。
背景技术
在建筑外面建立外墙保温系统是建筑行业节能减排的一个重要举措，同时建立外墙保温系统可以避免产生热桥；还能根据季节变化调节室内温度，避免室内外温差对墙体造成损害，影响使用安全及寿命。现在市面上的外墙保温材料基本为：酚醛、岩棉板、玻璃棉板、聚苯板、挤塑板、超薄真空绝热板等等。其中，岩棉、玻化微珠的成本较高，而酚醛、聚苯板、挤塑板等防火性能严重不足，安全隐患多，因此对比看来水泥发泡保温板具有更为优良的综合性能，更适用于作为建筑外墙保温材料。
水泥发泡保温板是以水泥、粉煤灰、矿渣、硅灰等原料经化学发泡剂发泡而成，原料的选取及工艺将直接影响到产品的性能，目前市场上的水泥发泡材料质量参差不齐，在粘结强度、耐水性、耐老化性等方面存在不足。《复合EPS颗粒发泡水泥发泡保温板的研究》一文将硅酸盐水泥与改性EPS颗粒混合发泡，制成了一种无机/有机复合保温材料，具有良好的保温、耐水、阻燃效果，然而EPS颗粒刚性较高，易脆易裂，热膨胀系数较大，容易变形开裂，直接影响复合板材的使用性能，因此需要对其进一步改性，以提高其使用性能。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板及其制备方法。
本发明是通过以下技术方案实现的：
一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板，该发泡保温板由以下重量份的原料制成：硅酸盐水泥40-50、粉煤灰15-20、陶瓷纤维绒5-10、200-500目膨胀蛭石粉12-15、碳酸锆铵1-2、聚酰胺蜡2-3、固含量为20-30%的纳米碳溶胶2-3、EVA乳液1-2、石蜡1-2、再生EPS粒子30-40、十二烷基磺酸钠0.1-0.2、浓度为20-25%的双氧水5-6、水适量。
所述的再生EPS粒子由以下重量份的原料制成：废旧聚苯乙烯泡沫塑料粒子20-30、硅烷偶联剂0.5-1、TPE热塑性弹性体5-8、400-600目磷酸锆钠陶瓷粉体8-10、氮气4-5；制备方法为：将废旧聚苯乙烯泡沫塑料粒子、硅烷偶联剂、TPE热塑性弹性体、磷酸锆钠陶瓷粉体送入喂料系统中混合均匀，随后投入双螺杆挤出机中熔融混合，并注入氮气进行发泡处理，最后熔体经双螺杆挤出机挤出造粒筛分，粒度控制在≤1mm，即得。
所述的一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板的制备方法为：
（1）取10-15重量份的水，加入十二烷基磺酸钠，搅拌至其完全溶解后加入纳米碳溶胶、EVA乳液，超声分散20-30min后所得混合溶液备用；
（2）将石蜡加热至熔融状态，缓慢加入步骤（1）制备的溶液，边加边搅拌，添加完毕后高速搅拌混合2-3h，得乳化石蜡液，随后将配制的乳化石蜡液均匀喷涂到再生EPS粒子表面，喷涂完毕后用40-50℃热风干燥处理20-30min，得乳化石蜡包覆改性的再生EPS粒子备用；
（2）将硅酸盐水泥、粉煤灰、陶瓷纤维绒、膨胀蛭石粉、碳酸锆铵、聚酰胺蜡依次投入高速混料机中，加入适量的水，高速搅拌混合5-6min后投入步骤（1）制备的乳化石蜡包覆改性的再生EPS粒子，继续搅拌混合4-5min，最后再加入双氧水，快速搅拌混合4-5s后将混合浆料浇注入模成型，经发泡静停、养护、脱模后即得所述发泡保温板。
本发明将成本低廉的废旧聚苯乙烯泡沫塑料进行改性处理，得到具有良好力学性能和高热稳定性再生EPS粒子，并利用纳米碳溶胶、EVA乳液改性的乳化石蜡对其进行表面包覆处理，有效的提高了再生EPS粒子与水泥浆料的界面结合强度，附着力更强，进一步促进了水泥浆料的水合作用，提高胶料内部结构均匀程度，降低内部应力，其与硅酸盐水泥、粉煤灰、陶瓷纤维绒、膨胀蛭石粉、碳酸锆铵等原料协同作用，经过发泡后制得了高抗裂、抗水、保温、抗冲击、阻燃耐火的复合板材，产品经济实用，耐用环保，生产过程简单高效，应用前景良好。
具体实施方式
一种乳化石蜡包覆改性再生EPS粒子硅酸盐水泥复合发泡保温板，该发泡保温板由以下重量份的原料制成：硅酸盐水泥40、粉煤灰15、陶瓷纤维绒5、200目膨胀蛭石粉12、碳酸锆铵1、聚酰胺蜡2、固含量为20%的纳米碳溶胶2、EVA乳液1、石蜡1、再生EPS粒子30、十二烷基磺酸钠0.1、浓度为20%的双氧水5、水适量。
其中再生EPS粒子由以下重量份的原料制成：废旧聚苯乙烯泡沫塑料粒子20、硅烷偶联剂0.5、TPE热塑性弹性体5、400目磷酸锆钠陶瓷粉体8、氮气4；制备方法为：将废旧聚苯乙烯泡沫塑料粒子、硅烷偶联剂、TPE热塑性弹性体、磷酸锆钠陶瓷粉体送入喂料系统中混合均匀，随后投入双螺杆挤出机中熔融混合，并注入氮气进行发泡处理，最后熔体经双螺杆挤出机挤出造粒筛分，粒度控制在≤1mm，即得。
该复合发泡保温板的制备方法为：
（1）取10重量份的水，加入十二烷基磺酸钠，搅拌至其完全溶解后加入纳米碳溶胶、EVA乳液，超声分散20min后所得混合溶液备用；
（2）将石蜡加热至熔融状态，缓慢加入步骤（1）制备的溶液，边加边搅拌，添加完毕后高速搅拌混合2h，得乳化石蜡液，随后将配制的乳化石蜡液均匀喷涂到再生EPS粒子表面，喷涂完毕后用40℃热风干燥处理20min，得乳化石蜡包覆改性的再生EPS粒子备用；
（2）将硅酸盐水泥、粉煤灰、陶瓷纤维绒、膨胀蛭石粉、碳酸锆铵、聚酰胺蜡依次投入高速混料机中，加入适量的水，高速搅拌混合5min后投入步骤（1）制备的乳化石蜡包覆改性的再生EPS粒子，继续搅拌混合4min，最后再加入双氧水，快速搅拌混合4s后将混合浆料浇注入模成型，经发泡静停、养护、脱模后即得所述发泡保温板。
制得的保温板根据相关标准进行性能测试，测试结果为：
密度：218.5kg/m3；导热系数：0.028W/(m2.k)；抗压强度：1.42MPa；吸水率：2.84%；阻燃等级：A。

Claims (3)

1.一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板，其特征在于，该发泡保温板由以下重量份的原料制成：硅酸盐水泥40-50、粉煤灰15-20、陶瓷纤维绒5-10、200-500目膨胀蛭石粉12-15、碳酸锆铵1-2、聚酰胺蜡2-3、固含量为20-30%的纳米碳溶胶2-3、EVA乳液1-2、石蜡1-2、再生EPS粒子30-40、十二烷基磺酸钠0.1-0.2、浓度为20-25%的双氧水5-6、水适量。
2.如权利要求1所述的一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板，其特征在于，所述的再生EPS粒子由以下重量份的原料制成：废旧聚苯乙烯泡沫塑料粒子20-30、硅烷偶联剂0.5-1、TPE热塑性弹性体5-8、400-600目磷酸锆钠陶瓷粉体8-10、氮气4-5；制备方法为：将废旧聚苯乙烯泡沫塑料粒子、硅烷偶联剂、TPE热塑性弹性体、磷酸锆钠陶瓷粉体送入喂料系统中混合均匀，随后投入双螺杆挤出机中熔融混合，并注入氮气进行发泡处理，最后熔体经双螺杆挤出机挤出造粒筛分，粒度控制在≤1mm，即得。
3.如权利要求1所述的一种乳化石蜡包覆改性再生EPS粒子-硅酸盐水泥复合发泡保温板的制备方法，其特征在于，所述的制备方法为：
（1）取10-15重量份的水，加入十二烷基磺酸钠，搅拌至其完全溶解后加入纳米碳溶胶、EVA乳液，超声分散20-30min后所得混合溶液备用；
（2）将石蜡加热至熔融状态，缓慢加入步骤（1）制备的溶液，边加边搅拌，添加完毕后高速搅拌混合2-3h，得乳化石蜡液，随后将配制的乳化石蜡液均匀喷涂到再生EPS粒子表面，喷涂完毕后用40-50℃热风干燥处理20-30min，得乳化石蜡包覆改性的再生EPS粒子备用；
（2）将硅酸盐水泥、粉煤灰、陶瓷纤维绒、膨胀蛭石粉、碳酸锆铵、聚酰胺蜡依次投入高速混料机中，加入适量的水，高速搅拌混合5-6min后投入步骤（1）制备的乳化石蜡包覆改性的再生EPS粒子，继续搅拌混合4-5min，最后再加入双氧水，快速搅拌混合4-5s后将混合浆料浇注入模成型，经发泡静停、养护、脱模后即得所述发泡保温板。
CN201611175341.8A 2016-12-19 2016-12-19 一种乳化石蜡包覆改性再生eps粒子‑硅酸盐水泥复合发泡保温板及其制备方法 Withdrawn CN106810151A (zh)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN111807743A (zh) * 2020-07-28 2020-10-23 深圳港创建材股份有限公司 一种降低再生细骨料吸水率的改性方法
CN114075060A (zh) * 2020-08-22 2022-02-22 陈军 一种模压无机胶苯颗粒保温板及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111807743A (zh) * 2020-07-28 2020-10-23 深圳港创建材股份有限公司 一种降低再生细骨料吸水率的改性方法
CN114075060A (zh) * 2020-08-22 2022-02-22 陈军 一种模压无机胶苯颗粒保温板及其制备方法

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