CN107189668A - 环保型矿用低温喷涂材料及其制备方法 - Google Patents

环保型矿用低温喷涂材料及其制备方法 Download PDF

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CN107189668A
CN107189668A CN201710525563.6A CN201710525563A CN107189668A CN 107189668 A CN107189668 A CN 107189668A CN 201710525563 A CN201710525563 A CN 201710525563A CN 107189668 A CN107189668 A CN 107189668A
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刘玄
李明友
唐国涛
郝德开
张佳佳
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Abstract

本发明涉及一种环保型矿用低温喷涂材料及其制备方法,属于化工技术领域。所述喷涂材料由质量比为1:1的A组分和B组分制成,以重量份数计,A组分由以下原料制成:聚醚多元醇25~40份,液化淀粉15~30份,碳酸氢铵5~10份,水0~24份,阻燃剂A 10~20份,泡沫稳定剂1~2份,非离子型抗静电剂0.5~1份,催化剂2~5.5份;B组分由以下原料制成:异氰酸酯70~90份,阻燃剂B 10~30份。本发明利用碳酸氢铵分解产生气体作为发泡剂,分解吸收大量的热量,从而大大降低了体系的内部反应温度,采用液化淀粉能够增加材料的力学性能,同时使得材料能够被生物降解,本发明适用于煤壁防瓦斯渗漏、瓦斯富集以及煤壁表面防护、减少粉尘等处理。

Description

环保型矿用低温喷涂材料及其制备方法
技术领域
本发明涉及一种环保型矿用低温喷涂材料及其制备方法,属于化工技术领域。
背景技术
在煤矿开采过程中会形成大量的巷道、破碎煤壁和空穴等,煤层中残余的瓦斯会通过煤壁的孔隙进入巷道,同时瓦斯也会在空穴、凹陷的地方富集,严重威胁着煤矿的安全生产。裸露的煤岩也会增加巷道内的粉尘污染,影响着煤矿工人的身体健康。为了解决这些问题,需要对裸露的煤壁、空洞进行封闭,主要得实施方式为喷涂,喷涂所用的无机喷涂材料虽然成本低,但是粘结力差、容易开裂,同时施工时容易产生粉尘;有机喷涂材料的粘结力强、密闭性好、发泡倍率大,但是存在阻燃性差,内部反应温度高、发泡剂污染大气等问题。因此,亟需开发一种性能优异、内部反应温度低、绿色环保的煤矿用喷涂材料。
发明内容
本发明的目的是提供一种环保型矿用低温喷涂材料,具有发泡倍率大、与煤壁粘结效果好、抗静电性能优良的特点,本发明同时提供其制备方法。
本发明所述的环保型矿用低温喷涂材料,由质量比为1:1的A组分和B组分制成,其中:
以重量份数计,A组分由以下原料制成:
所述聚醚多元醇是官能度为3,分子量为2000~5000的环氧丙烷环氧乙烷共聚聚醚多元醇,环氧乙烷的含量大于8wt%;
所述阻燃剂A为三(2-氯乙基)磷酸酯、三(2-氯丙基)磷酸酯、甲基膦酸二甲酯、磷酸三乙酯、磷酸三(丁氧基乙基)酯中的任意一种或多种;
所述液化淀粉的制备方法如下:以重量份数计,向反应釜内加入45份分子量为600的聚乙二醇、20份丙三醇、30份淀粉、5份浓度为30wt%的硫酸,在160℃下反应2h,然后加入NaOH中和至pH=7.0,经脱水、吸附、过滤后制得液化淀粉。
所述碳酸氢铵为工业级,粒度为80目。
所述泡沫稳定剂为有机硅类表面活性剂。
所述非离子型抗静电剂为脂肪酸的环氧加合物、乙氧基化脂肪酰胺、乙醇胺-缩水甘油醚中的一种或两种。
所述催化剂为双(二甲氨基乙基)醚、五甲基二亚乙基三胺、二甲基环己胺、三(二甲氨基丙基)六氢三嗪、三乙烯二胺中的任意两种或多种。
以重量份数计,B组分由以下原料制成:
异氰酸酯 70~90份
阻燃剂B 10~30份;
所述阻燃剂B为三(2-氯乙基)磷酸酯、三(2-氯丙基)磷酸酯、甲基膦酸二甲酯、磷酸三乙酯、磷酸三(丁氧基乙基)酯中的任意一种或多种。
所述异氰酸酯为多亚甲基多苯基多异氰酸酯、二苯基甲烷二异氰酸酯、碳化二亚胺改性异氰酸酯、异氰酸酯预聚体中的任意一种或多种。
本发明所述的环保型矿用低温喷涂材料的制备方法,是将A组分中配比量的原料混合均匀,封装备用;将B组分中配比量的原料混合均匀,封装备用;然后将A组分和B组分按照质量比为1:1的比例加入到喷涂机中进行喷涂。
本发明中:
在矿用喷涂材料中加入碳酸氢铵,利用碳酸氢铵分解产生气体作为发泡剂,同时分解会吸收大量的热量,从而大大降低了体系的内部反应温度,保证了在煤矿下施工的安全性,且碳酸氢铵分解产生的氨气能够起到一定的催化作用,从而也能够降低催化剂的用量;
采用液化淀粉替代部分聚醚多元醇,能够增加材料的力学性能,同时液化淀粉属于绿色可再生资源,来源广、成本低,使得材料能够被生物降解,降低喷涂材料对环境产生的影响
本发明的有益效果如下:
(1)本发明的矿用低温喷涂材料能够提高瓦斯的抽采效果,阻止了瓦斯进入巷道,防止瓦斯富集,还能减少粉尘加固煤岩体,具有发泡倍率大、与煤壁粘结效果好、抗静电性好的优良特性;
(2)本发明采用碳酸氢铵和水作为发泡剂,属于环保型发泡剂,对臭氧层无破坏。
具体实施方式
以下结合实施例对本发明做进一步描述。
以下实施例中所用到的液化淀粉的制备方法如下:以重量份数计,在反应釜中加入45份分子量为600的聚乙二醇、20份丙三醇、30份淀粉、5份浓度为30wt%的硫酸,在160℃下反应2h,后加NaOH中和,经脱水、吸附、过滤后制得液化淀粉。
实施例1
A组分:称取聚醚多元醇(官能度为3,分子量为3000)25份、液化淀粉30份、碳酸氢铵10份、水21份、三(2-氯丙基)磷酸酯10份、泡沫稳定剂(B8544,赢创)1份、脂肪酸的环氧加合物1份、双(二甲氨基乙基)醚1份、五甲基二亚乙基三胺0.5份、三(二甲氨基丙基)六氢三嗪0.5份混合均匀,封装备用;
B组分:称取多亚甲基多苯基多异氰酸酯70份、三(2-氯乙基)磷酸酯30份搅拌均匀,封装备用;
混合固化:将A组分和B组分按照质量比为1:1的比例加入到喷涂机中进行喷涂,性能检测结果见表1。
表1实施例1得到的产品性能检测结果
整体密度kg/m3 26
抗压强度(10%)Kpa 113
尺寸稳定性(-45℃,24h)% 0.26
氧指数(%) 27.1
内部反应温度(℃) 85.6
实施例2
A组分:称取聚醚多元醇(官能度为3,分子量为2000)30份、液化淀粉26份、碳酸氢铵8份、水10份、三(2-氯丙基)磷酸酯10份、磷酸三乙酯10份、泡沫稳定剂(L6869,美国迈图)2份、乙醇胺-缩水甘油醚0.5份和催化剂二甲基环己胺2份、三(二甲氨基丙基)六氢三嗪1.5份混合均匀,封装备用;
B组分:称取多亚甲基多苯基多异氰酸酯60份、碳化二亚胺改性异氰酸酯30份、甲基膦酸二甲酯10份搅拌均匀,封装备用;
混合固化:将A组分和B组分按照质量比为1:1的比例加入到喷涂机中进行喷涂,性能检测结果见表2。
表2实施例2得到的产品性能检测结果
实施例3
A组分:称取聚醚多元醇(官能度为3,分子量为5000)32份、液化淀粉18份、碳酸氢铵5份、水24份、三(2-氯丙基)磷酸酯12.5份、泡沫稳定剂(L6868,美国迈图)2份、脂肪酸的环氧加合物1份和催化剂二甲基环己胺3份、三(二甲氨基丙基)六氢三嗪1.5份、三乙烯二胺1份混合均匀,封装备用;
B组分:称取多亚甲基多苯基多异氰酸酯50份、二苯基甲烷二异氰酸酯10份、异氰酸酯预聚体20份、三(2-氯乙基)磷酸酯15份、磷酸三(丁氧基乙基)酯5份搅拌均匀,封装备用;
混合固化:将A组分和B组分按照质量比为1:1的比例加入到喷涂机中进行喷涂,性能检测结果见表3。
表3实施例3得到的产品性能检测结果
整体密度kg/m3 28
抗压强度(10%)Kpa 123
尺寸稳定性(-45℃,24h)% 0.31
氧指数(%) 25.1
内部反应温度(℃) 88.2
实施例4
A组分:称取聚醚多元醇(官能度为3,分子量为3000)40份、液化淀粉15份、碳酸氢铵7份、水17.5份、三(2-氯丙基)磷酸酯10份、甲基膦酸二甲酯5份、泡沫稳定剂(B8804,美国迈图)1份、乙氧基化脂肪酰胺0.5份和催化剂(双(二甲氨基乙基)醚1份、五甲基二亚乙基三胺0.5、三(二甲氨基丙基)六氢三嗪1.5份、三乙烯二胺1份混合均匀,封装备用;
B组分:称取(多亚甲基多苯基多异氰酸酯60份、异氰酸酯预聚体15份、三(2-氯丙基)磷酸酯25份搅拌均匀,封装备用;
混合固化:将A组分和B组分按照质量比为1:1的比例加入到喷涂机中进行喷涂,性能检测结果见表4。
表4实施例4得到的产品性能检测结果
整体密度kg/m3 27
抗压强度(10%)Kpa 128
尺寸稳定性(-45℃,24h)% 0.33
氧指数(%) 26.8
内部反应温度(℃) 88.6

Claims (8)

1.一种环保型矿用低温喷涂材料,其特征在于:由质量比为1:1的A组分和B组分制成,其中:
以重量份数计,A组分由以下原料制成:
所述聚醚多元醇是官能度为3,分子量为2000~5000的环氧丙烷环氧乙烷共聚聚醚多元醇,环氧乙烷的含量大于8wt%;
所述阻燃剂A为三(2-氯乙基)磷酸酯、三(2-氯丙基)磷酸酯、甲基膦酸二甲酯、磷酸三乙酯、磷酸三(丁氧基乙基)酯中的任意一种或多种;
以重量份数计,B组分由以下原料制成:
异氰酸酯 70~90份
阻燃剂B 10~30份;
所述阻燃剂B为三(2-氯乙基)磷酸酯、三(2-氯丙基)磷酸酯、甲基膦酸二甲酯、磷酸三乙酯、磷酸三(丁氧基乙基)酯中的任意一种或多种。
2.根据权利要求1所述的环保型矿用低温喷涂材料,其特征在于:A组分中液化淀粉的制备方法如下:以重量份数计,向反应釜内加入45份分子量为600的聚乙二醇、20份丙三醇、30份淀粉、5份浓度为30wt%的硫酸,在160℃下反应2h,然后加入NaOH中和至pH=7.0,经脱水、吸附、过滤后制得液化淀粉。
3.根据权利要求1所述的环保型矿用低温喷涂材料,其特征在于:A组分中的碳酸氢铵为工业级,粒度为80目。
4.根据权利要求1所述的环保型矿用低温喷涂材料,其特征在于:A组分中的泡沫稳定剂为有机硅类表面活性剂。
5.根据权利要求1所述的环保型矿用低温喷涂材料,其特征在于:A组分中的非离子型抗静电剂为脂肪酸的环氧加合物、乙氧基化脂肪酰胺、乙醇胺-缩水甘油醚中的任意一种或两种。
6.根据权利要求1所述的环保型矿用低温喷涂材料,其特征在于:A组分中的催化剂为双(二甲氨基乙基)醚、五甲基二亚乙基三胺、二甲基环己胺、三(二甲氨基丙基)六氢三嗪、三乙烯二胺中的任意两种或多种。
7.根据权利要求1所述的环保型矿用低温喷涂材料,其特征在于:B组分中的异氰酸酯为多亚甲基多苯基多异氰酸酯、二苯基甲烷二异氰酸酯、碳化二亚胺改性异氰酸酯、异氰酸酯预聚体中的任意一种或多种。
8.一种权利要求1-7任一所述的环保型矿用低温喷涂材料的制备方法,其特征在于:将A组分中配比量的原料混合均匀,封装备用;将B组分中配比量的原料混合均匀,封装备用;然后将A组分和B组分按照质量比为1:1的比例加入到喷涂机中进行喷涂。
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