摘要
为改善膨润土润滑脂有机改性剂热分解温度不高、遇水易乳化、生产原料要求高、价格昂贵的缺陷,使用廉价的十八胺封端的脲醛、酚醛树脂为原料,分3个反应阶段对钠基膨润土进行改性,使改性后的有机膨润土具有一定亲油能力,且热分解温度较高。使用改性后的有机膨润土作稠化剂,选用不同的基础油,采用湿法合成工艺制备润滑脂。通过润滑脂性能测试发现,十八胺封端脲醛树脂改性后的有机膨润土稠化PAO8基础油制备的润滑脂具有较好的高、低温性能,机械安定性和抗水性能;十八胺封端酚醛树脂改性后的有机膨润土稠化150BS油制备的润滑脂的高温性能、抗水能力和极压性能突出,但由于选用的150BS基础油凝点较高,该润滑脂在更低温度下的使用性能不突出。
In order to overcome the shortcomings of the organic modifiers for bentonite, such as lower thermolysis temperature, easy emulsification when water exists, high quality needed of the raw material to make this kind of grease expensive, the low-priced oil-soluble urea-formaldehyde resin and phenol formaldehyde resin both with end group of octadecylamine were used as the organic modifier to prepare two bentonites with the characters of oil-soluble and higher thermolysis temperature through three reaction periods. Then two kinds of new greases were produced with these two modified bentonites as thickener, respectively, and with various base oils and the water as solvent. The characteristics of these greases were tested and it was found that the grease produced with the urea-formaldehyde resin modified organic bentonite and PAO8 base oil has broader temperature range of application and outstanding thermal oxide stability, engine invariability and anti-water ability. The grease produced with the phenol formaldehyde resin modified organic bentonite and 150BS base oil has smaller evaporation loss and outstanding anti-water ability, so it can be used at high temperature, moist, high shearing speed and heavy load industry environment, but it ean＇t be used at further low temperature because of higher solidifying point of 150BS.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2009年第B09期26-31,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
十八胺
脲醛树脂
酚醛树脂
膨润土
润滑脂
octadecylamine
urea formaldehyde resin
phenol formaldehyde resin
bentonite
grease
