CN107987773A - 一种汽车用复合聚氨酯玻璃胶及其制备方法 - Google Patents

一种汽车用复合聚氨酯玻璃胶及其制备方法 Download PDF

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CN107987773A
CN107987773A CN201711376405.5A CN201711376405A CN107987773A CN 107987773 A CN107987773 A CN 107987773A CN 201711376405 A CN201711376405 A CN 201711376405A CN 107987773 A CN107987773 A CN 107987773A
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徐咸大
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SHANGHAI DELIAN CHEMICAL Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

本发明公开了一种汽车用复合聚氨酯玻璃胶及其制备方法,该汽车用复合聚氨酯玻璃胶包括:端烷氧基硅烷基聚氨酯预聚体20‑50份,聚氨酯预聚体40‑45份,水玻璃5‑10份,丙烯酸树脂8‑15份,聚醚多元醇10‑15份,纳米TiO2粉末2‑8份,抗氧化剂0.5‑2份,乳化剂1‑3份,增塑剂1‑2份,固化促进剂0.5‑2份,抗紫外线剂0‑3份,滑石粉1‑5份,锂基膨润土0.5‑3份,触变剂0.1‑5份,消泡剂0.3‑0.8份。本发明的聚氨酯玻璃胶具有良好的环境适应性,能够适应汽车长期使用过程中的恶劣环境影响而保持稳定的性能,延长使用寿命。

Description

一种汽车用复合聚氨酯玻璃胶及其制备方法
技术领域
本发明属于密封材料领域,具体涉及一种汽车用复合聚氨酯玻璃胶及其制备方法。
背景技术
玻璃胶是用来填充空隙(孔洞、接头、接缝等)并对填充基层界面有粘接作用的材料,其主要包括:有机硅(包括改性有机硅)类、聚氨酯类、聚硫橡胶类、丙烯酸酯类、SBR橡胶类、丁基橡胶类、沥青、油性嵌缝胶类等。
聚氨酯玻璃胶的强度高、抗撕裂、柔软耐磨、耐穿刺、耐油和耐介质腐蚀,应用广泛,缺点是固化时异氨酸酯端基与空气中水分反应释放出二氧化碳,使玻璃胶本体产生气泡甚至裂纹,固化速度较慢且表面容易发粘,不能长期耐湿热和耐老化,采用天然原料合成的聚氨酯(半合成聚氨酯)则不耐霉菌侵蚀。聚氨酯玻璃胶发展速度最快,需求逐渐增大,是因为它具有优良的性能。现有的聚氨酯玻璃胶尤其在汽车玻璃安装时存在的缺陷:单组分聚氨酯玻璃胶用于汽车玻璃装配粘接时,其本体强度低于8Mpa(GB/T528)或延伸率低于450%(GB/T528)。在低温如0℃-10℃时,固化速率低于3.0mm/24小时(10℃±2℃,30%±5%湿度)。上述缺陷影响了单组分聚氨酯玻璃胶的应用效果或功效。
发明内容
本发明的目的,就是为了解决上述问题而提供了一种汽车用复合聚氨酯玻璃胶,在保持传统聚氨酯玻璃胶的性能,具有良好的环境适应性。
本发明的目的是这样实现的:
本发明的一种汽车用复合聚氨酯玻璃胶包括以下组分及重量份数:
在上述的一种汽车用复合聚氨酯玻璃胶中固化促进剂为二甲基苯胺。
在上述的一种汽车用复合聚氨酯玻璃胶中抗紫外线剂为2-羟基-4-正辛氧基二苯甲酮或2-(2-羟基-5-甲基苯基)苯并三氮唑。
在上述的一种汽车用复合聚氨酯玻璃胶中增塑剂选自脂肪族二元酸酯类或苯二甲酸酯类。
在上述的一种汽车用复合聚氨酯玻璃胶中抗氧剂为季戊四醇酯和亚磷酸酯。
本发明还提供一种汽车用复合聚氨酯玻璃胶的制备方法包括以下步骤:
(1)按以下组分及重量分数准备原料:
(2)将端烷氧基硅烷基聚氨酯预聚体、聚氨酯预聚体、抗紫外线剂和抗氧化剂在真空调节下搅拌均匀后匀速升温至40~45℃,保持温度继续搅拌20~30分钟;
(3)向步骤(2)的混合物中加入丙烯酸树脂、水玻璃、增塑剂、聚醚多元醇和乳化剂后升温至80~90℃,维持稳定搅拌60分钟至120分钟,搅拌过程中加入纳米TiO2粉末、滑石粉、滑石粉、锂基膨润土、触变剂和消泡剂。
(4)步骤(3)的产物在搅拌状态下降温至40~45℃,加入固化促进剂并继续搅拌20~30分钟即可。
本发明的聚氨酯玻璃胶具有良好的环境适应性,能够适应汽车长期使用过程中的恶劣环境影响而保持稳定的性能,延长使用寿命。
具体实施方式
下面将结合实施例,对本发明作进一步说明。
实施例1~4的组分及重量份数如表1所示:
表1实施例1~4的组分(重量份)
按以下步骤制备实施例1-5的玻璃胶:
(1)将端烷氧基硅烷基聚氨酯预聚体、聚氨酯预聚体、抗紫外线剂和抗氧化剂在真空调节下搅拌均匀后匀速升温至40℃,保持温度继续搅拌25分钟;
(2)向步骤(1)的混合物中加入丙烯酸树脂、水玻璃、增塑剂、聚醚多元醇和乳化剂后升温至90℃,维持稳定搅拌90分钟,搅拌过程中加入纳米T iO2粉末、滑石粉、滑石粉、锂基膨润土、触变剂和消泡剂。
(3)步骤(2)的产物在搅拌状态下降温至40℃,加入固化促进剂并继续搅拌30分钟即可。
根据GB/T-528的测试标准,性能结果如下表2所示:
表2实施例1-5的性能测试结果
以上实施例仅供说明本发明之用,而非对本发明的限制,有关技术领域的技术人员,在不脱离本发明的精神和范围的情况下,还可以作出各种变换或变型,因此所有等同的技术方案也应该属于本发明的范畴,应由各权利要求所限定。

Claims (6)

1.一种汽车用复合聚氨酯玻璃胶,其特征在于,包括以下组分及重量份数:
2.如权利要求1所述的一种汽车用复合聚氨酯玻璃胶,其特征在于,所述固化促进剂为二甲基苯胺。
3.如权利要求1所述的一种汽车用复合聚氨酯玻璃胶,其特征在于,所述抗紫外线剂为2-羟基-4-正辛氧基二苯甲酮或2-(2-羟基-5-甲基苯基)苯并三氮唑。
4.如权利要求1所述的一种汽车用复合聚氨酯玻璃胶,其特征在于,所述增塑剂选自脂肪族二元酸酯类或苯二甲酸酯类。
5.如权利要求1所述的一种汽车用复合聚氨酯玻璃胶,其特征在于,所述的抗氧剂为季戊四醇酯和亚磷酸酯。
6.如权利要求1所述的一种汽车用复合聚氨酯玻璃胶的制备方法,其特征在于,包括以下步骤:
(1)按以下组分及重量分数准备原料:
(2)将端烷氧基硅烷基聚氨酯预聚体、聚氨酯预聚体、抗紫外线剂和抗氧化剂在真空调节下搅拌均匀后匀速升温至40~45℃,保持温度继续搅拌20~30分钟;
(3)向步骤(2)的混合物中加入丙烯酸树脂、水玻璃、增塑剂、聚醚多元醇和乳化剂后升温至80~90℃,维持稳定搅拌60分钟至120分钟,搅拌过程中加入纳米TiO2粉末、滑石粉、滑石粉、锂基膨润土、触变剂和消泡剂。
(4)步骤(3)的产物在搅拌状态下降温至40~45℃,加入固化促进剂并继续搅拌20~30分钟即可。
CN201711376405.5A 2017-12-19 2017-12-19 一种汽车用复合聚氨酯玻璃胶及其制备方法 Pending CN107987773A (zh)

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