CN106349911B - 一种可直接盛装高温液体的容器内防腐保温涂层及其制备方法 - Google Patents
一种可直接盛装高温液体的容器内防腐保温涂层及其制备方法 Download PDFInfo
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Abstract
本发明涉及抗水、防腐复合保温材料技术领域,具体为一种可直接盛装高温液体的容器内防腐保温涂层及其制备方法。技术方案如下:一种可直接盛装高温液体的容器内防腐保温涂层,包括改性液体橡胶、晶须纤维、发泡剂、引发剂、填料;其中,所述改性液体橡胶包括有以下占涂层质量百分比的各组分:改性聚氨酯橡胶预聚体10‑40%,促联剂10‑40%。本发明很好的解决了长期以来移动式大型容器外保温所存在的冷、热桥及无法密闭的问题,从此可以对容器进行内保温,满足了工艺介质对温度的苛刻要求。
Description
技术领域
本发明涉及一种涂层复合材料,属于抗水、防腐复合保温材料技术领域,特别是涉及一种可直接盛装高温液体的容器内防腐保温涂层及其制备方法。
背景技术
传统盛装液体的大型容器,内防腐与保温节能通常是分开实施的,因为传统保温材料的抗水性、抗压强度、耐腐蚀性都使得其无法直接与高温或腐蚀性液体接触,更无法直接长期盛装重量很大的高温液体、或腐蚀性液体,因此保温往往在容器外施工,而只能在容器内实施防腐。但是在今天的工业领域,尤其是移动性作业的大型工业罐体,或用汽车运输、或用吊车移动,罐体底部由于支撑结构复杂,而使得在罐体外部无法实施密闭保温(如图1所示),因此,当罐体内部的工作介质对高温或低温敏感时,对罐体保温的要求就非常高。那么这种工况下的罐体保温就成了一个难以解决的问题。
目前大型移动性罐体的保温采用的保温材料有岩棉、发泡材料、保温涂料等等,但都无法解决罐体支撑部位、接口部位的保温问题。而且传统的保温材料都存在强度小、耐撞击和耐磨性差,在大型罐体用吊车等大型设备移动时,外层保温结构极易破损的问题。因此,急需一种能在容器内部进行无缝、密闭保温的材料,同时要求该材料必须具备能长期直接盛装高温、甚至腐蚀性的液体,在承受巨大压力的同时,抗水性、防腐性、耐高温性和保温性能都必须非常好,结构稳定,使用寿命长。
发明内容
本发明的目的在于解决传统保温技术的不足,提供一种可直接盛装高温液体的容器内防腐保温涂层及其制备方法,该涂层采用改性的液体橡胶来解决长期使用中的抗水、耐磨、防腐、耐高温的问题,同时采用纤维增强其结构,大大延长涂层的使用寿命,最关键的是,涂层的整体结构采用了微泡与超级隔热填料双重热阻,大大降低了整个涂层的导热系数,其原理如下:热量散失以三种方式,热对流、热传导、热辐射,涂层中按比例分散的粒子粒径从5纳米到300微米,纳米级微粒由于比表面积大,在其与微泡的布局配合中,构成了对热对流与热传导的良好阻隔,而微米级真空微粒对热辐射构成了如镜面一样的反射墙,因此,按优化配比的该涂层,整体导热系数在常温下可以达0.02w/m·k以下,承压强度可达20mpa以上,对容器内壁的剥离强度大于200N/2.5CM,同时配方中采用了防腐改性的交联基料,使得整个涂层的耐用性大大增强。
本发明的一个目的是提供一种可直接盛装高温液体的容器内防腐保温涂层,技术方案如下:一种可直接盛装高温液体的容器内防腐保温涂层,包括改性液体橡胶、晶须纤维、发泡剂、引发剂、填料;其中,所述改性液体橡胶包括有以下占涂层质量百分比的各组份:改性聚氨酯橡胶预聚体10-40%,促联剂10-40%;所述晶须纤维包括有以下占涂层质量百分比的各组份:六钛酸钾晶须2-9%,超细玻璃纤维粉6-19%;所述发泡剂包括有以下占涂层质量百分比的各组份:偶氮二甲酰胺0.2-0.9%;所述引发剂包括有以下占涂层质量百分比的各组份:二月桂酸二丁基锡1-4%;所述填料包括有以下占涂层质量百分比的各组份:真空有机硅微球3-29%、膨胀纳米玻璃粉5-35%、耐高温树脂膨胀粉1-17%。
进一步的,本发明所述原料配比的优选方案为:改性聚氨酯橡胶预聚体10%,促联剂24.8%;所述晶须纤维包括有以下占涂层质量百分比的各组份:六钛酸钾晶须2%,超细玻璃纤维粉7%;所述发泡剂包括有以下占涂层质量百分比的各组份:偶氮二甲酰胺0.2%;所述引发剂包括有以下占涂层质量百分比的各组份:二月桂酸二丁基锡1%;所述填料包括有以下占涂层质量百分比的各组份:真空有机硅微球29%、膨胀纳米玻璃粉25%、耐高温树脂膨胀粉1%。
进一步的,所述改性聚氨酯橡胶预聚体为室温固化;所述促联剂为二甲基二硫代氨基甲酸锌。
进一步的,所述六钛酸钾晶须的常温导热系数不超过0.06w/m·k,所述超细玻璃纤维粉的纤维长度为0.5mm-5mm。
进一步的,所述偶氮二甲酰胺为二氮烯二羧酸酰胺。
进一步的,所述二月桂酸二丁基锡为聚氨酯延迟催化剂DY-5508延迟催化的二月桂酸二丁基锡。
进一步的,所述真空有机硅微球平均粒径为200um-300um、膨胀纳米玻璃粉平均粒径为5nm-50nm、耐高温树脂膨胀粉平均粒径为10um-120um。
本发明的另一个目的是提供所述的可直接盛装高温液体的容器内防腐保温涂层制备方法,该方法包括如下步骤:
S1、制备A组份:将改性聚氨酯橡胶预聚体与六钛酸钾晶须、偶氮二甲酰胺、真空有机硅微球混合、中速搅拌分散备用;所述中速的速度范围为100-300转/分钟;
S2、制备B组份:将促联剂与超细玻璃纤维粉、二月桂酸二丁基锡、膨胀纳米玻璃粉、耐高温树脂膨胀粉混合、中速搅拌分散备用;
S3、将A组份与B组份按照质量比1:1的比例混合即可。
进一步的,所述改性聚氨酯橡胶预聚体为室温固化,经耐高温、增强改性得到,所述促联剂为二甲基二硫代氨基甲酸锌,所述六钛酸钾晶须的常温导热系数不超过0.06w/m·k,所述超细玻璃纤维粉的纤维长度为0.5mm-5mm,所述偶氮二甲酰胺为二氮烯二羧酸酰胺,所述二月桂酸二丁基锡为聚氨酯延迟催化剂DY-5508延迟催化的二月桂酸二丁基锡,所述真空有机硅微球平均粒径为200um-300um、膨胀纳米玻璃粉平均粒径为5nm-50nm、耐高温树脂膨胀粉平均粒径为10um-120um。
本发明的有益效果如下:(1)本发明很好的解决了长期以来移动式大型容器外保温所存在的冷、热桥及无法密闭的问题,从此可以对容器进行内保温,满足了工艺介质对温度的苛刻要求。(2)本发明很好的解决了传统保温涂层导热系数与各种强度参数不能同时兼顾的问题,在实现高强度的情况下,获得极佳的保温效果。(3)本发明很好的解决了传统保温涂层耐高温、耐水性、防腐性无法达到可以直接盛装高温腐蚀液体的问题,本发明实现的保温涂层可以长期盛装最高150℃的各种液态物质,而且耐酸、耐碱、耐油。(4)本发明提供的保温涂层环保、无毒,生产过程中没有污染和排放,且涂层工艺简单、安全可靠、性价比高。(5)本发明的涂层所选用的均为耐高温、耐腐蚀、高强度、低导热系数的交联及填充体系,利用常温微发泡原理将超强耐水、耐酸碱、耐腐蚀的橡胶体系配以最新隔热填充材料使之构建成结构稳定、导热系数极低的一体化隔热结构。
附图说明
图1是本发明实施例涂层针对的大型可移动罐体侧面结构示意图;
图2是本发明的涂层剖面结构示意图。
其中:1、吊环,2、平台,3、人孔,4、罐体,5、派液孔,6、尾孔,7、支撑架,8、微孔,9、膨胀树脂微粒,10、涂层主体,11、硅微粒,12、纤维组份,13、膨胀纳米玻璃粉。
具体实施方式
下面结合具体实施例对本发明的技术方案作进一步的说明,但本发明不以任何形式受限于实施例内容。实施例中所述试验方法如无特殊说明,均为常规方法;如无特殊说明,所述试剂和生物材料,均可从商业途径获得。作为优选,超细玻璃纤维粉购自大连薪连科技有限公司;膨胀纳米玻璃粉购自江苏华星重工机械有限公司;耐高温树脂膨胀粉购自上海拓佳印刷材料有限公司;二甲基二硫代氨基甲酸锌购自上海加成化工有限公司;二月桂酸二丁基锡购自上海德音化学有限公司。
实施例按照下表1中的原料配比关系进行:
表1
实施例1
S1、制备A组份:将改性聚氨酯橡胶预聚体与六钛酸钾晶须、偶氮二甲酰胺、真空有机硅微球混合、中速搅拌分散备用;所述的中速为100-300转/分钟;
S2、制备B组份:将促联剂与超细玻璃纤维粉、二月桂酸二丁基锡、膨胀纳米玻璃粉、耐高温树脂膨胀粉混合、中速搅拌分散备用;
S3、将A组份与B组份按照质量比1:1的比例混合后,按一定厚度涂刷于容器内表面,室温固化24小时后,即成可直接盛装高温液体的容器内防腐保温涂层,涂层的厚度可根据实际需要进行调整。
实施例2
本实施例与实施例1制备方法相同,区别在于,物料配比以及物料的颗粒大小。
实施例3
本实施例与实施例1制备方法相同,区别在于,物料配比以及物料的颗粒大小。
实施例4
本实施例与实施例1制备方法相同,区别在于,物料配比以及物料的颗粒大小。
实施例5
对实施例4制得的产品进行性能参数检测,结果如下:
表2保温性能参数
项目 | 单位 | 标准要求 | 检测结果 | 单项结论 |
粘结强度 | Kpa | ≥25 | 1200 | 合格 |
导热系数(70℃) | w/m·k | ≤0.06 | 0.018 | 合格 |
干容重 | Kg/m3 | ≤180 | 138 | 合格 |
表3超强耐磨抗水气凝胶纳米绝热涂料性能
实施例6
对实施例4制得的产品进行防冻试验,本次防冻实验的对象为储液罐,储液罐采用可直接盛装高温液体的纳米隔热涂层,内保温。
表4实验对象参数
外界温度为-30℃,实验对象内介质为60℃热水、7℃滑溜水。冷冻时间分别为24小时。每6个小时测量一次实验对象内液体的温度。
试验结果如下:
表5试验结果
由试验结果可知,使用本发明的材料做储液罐内的保温涂层,相对不做任何保温措施,储液罐的降温速率明显降低,随着涂层的增厚,降温速率也更低,结冰厚度也明显降低。如图2所示:涂层主体10中分散有微孔8,耐高温树脂微粒9,硅微粒11,纤维组份12和膨胀纳米玻璃粉13,涂层中按比例分散的粒子粒径从5纳米到300微米,纳米级微粒由于比表面积大,在其与微泡的布局配合中,构成了对热对流与热传导的良好阻隔,而微米级真空微粒对热辐射构成了如镜面一样的反射墙,因此,按优化配比的该涂层,整体导热系数在常温下可以达0.02w/m·k以下,承压强度可达20mpa以上。
综上所述,本发明产品特点:(1)是一种超级绝热材料,主要用于工业设备、管道、设施、构造物的保温隔热,尤其适用于特殊用途领域,比如石油开采、户外移动设施的超薄保温、防冻等既要求高性能隔热又要求超强抗水防护的设备、工具等。(2)本发明材料的导热系数0.018w/m·k,属于超级隔热系列,1mm厚度的本产品隔热效果超过10mm的传统保温材料。(3)本产品尤其适用于设备内部保温,保温后直接可以盛装高温、低温液体,这是国内唯一的可以直接承重高低温(化工)液体的保温材料。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (7)
1.一种可直接盛装高温液体的容器内防腐保温涂层,其特征在于,包括改性液体橡胶、晶须纤维、发泡剂、引发剂、填料;
其中,所述改性液体橡胶包括以下占涂层质量百分比的各组份:改性聚氨酯橡胶预聚体10-40%,促联剂10-40%;
所述晶须纤维包括以下占涂层质量百分比的各组份:六钛酸钾晶须2-9%,超细玻璃纤维粉6-19%;
所述发泡剂包括以下占涂层质量百分比的各组份:偶氮二甲酰胺0.2-0.9%;
所述引发剂包括以下占涂层质量百分比的各组份:二月桂酸二丁基锡1-4%;
所述填料包括以下占涂层质量百分比的各组份:真空有机硅微球3-29%、膨胀纳米玻璃粉5-35%、耐高温树脂膨胀粉1-17%。
2.如权利要求1所述的可直接盛装高温液体的容器内防腐保温涂层,其特征在于,
所述改性液体橡胶包括以下占涂层质量百分比的各组份:改性聚氨酯橡胶预聚体10%,促联剂24.8%;
所述晶须纤维包括以下占涂层质量百分比的各组份:六钛酸钾晶须2%,超细玻璃纤维粉7%;
所述发泡剂包括以下占涂层质量百分比的各组份:偶氮二甲酰胺0.2%;
所述引发剂包括以下占涂层质量百分比的各组份:二月桂酸二丁基锡1%;
所述填料包括以下占涂层质量百分比的各组份:真空有机硅微球29%、膨胀纳米玻璃粉25%、耐高温树脂膨胀粉1%。
3.如权利要求1所述的可直接盛装高温液体的容器内防腐保温涂层,其特征在于,所述改性聚氨酯橡胶预聚体为室温固化,经耐高温、增强改性得到;所述促联剂为二甲基二硫代氨基甲酸锌。
4.如权利要求1所述的可直接盛装高温液体的容器内防腐保温涂层,其特征在于,所述六钛酸钾晶须的常温导热系数不超过0.06w/m·k,所述超细玻璃纤维粉的纤维长度为0.5mm-5mm。
5.如权利要求1所述的可直接盛装高温液体的容器内防腐保温涂层,其特征在于,所述真空有机硅微球平均粒径为200μm-300μm、膨胀纳米玻璃粉平均粒径为5nm-50nm、耐高温树脂膨胀粉平均粒径为10μm-120μm。
6.一种制备如权利要求1所述的可直接盛装高温液体的容器内防腐保温涂层的方法,其特征在于,包括如下步骤:
S1、制备A组份:将改性聚氨酯橡胶预聚体与六钛酸钾晶须、偶氮二甲酰胺、真空有机硅微球混合、搅拌分散备用;
S2、制备B组份:将促联剂与超细玻璃纤维粉、二月桂酸二丁基锡、膨胀纳米玻璃粉、耐高温树脂膨胀粉混合、搅拌分散备用;
S3、将A组份与B组份按照质量比1:1的比例混合即可。
7.如权利要求6所述的制备可直接盛装高温液体的容器内防腐保温涂层的方法,其特征在于,所述改性聚氨酯橡胶预聚体为室温固化,经耐高温、增强改性得到,所述促联剂为二甲基二硫代氨基甲酸锌,所述六钛酸钾晶须的常温导热系数不超过0.06w/m·k,所述超细玻璃纤维粉的纤维长度为0.5mm-5mm,所述真空有机硅微球平均粒径为200μm-300μm、膨胀纳米玻璃粉平均粒径为5nm-50nm、耐高温树脂膨胀粉平均粒径为10μm-120μm。
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