张振等把矿物油、植物油加入二氧化硅、烷基硅油的混合物中制备出一种矿物油

Zhang, etc. The mineral oil, vegetable silica was added to prepare a mixture of a mineral oil defoamer silicone oil in the alkyl group. To increase compatibility with mineral oil, alkyl silicone oil is required to control the carbon chain length. Studies have shown that, m (vegetable oils and their derivatives) :m (mineral oil) = (7:4) ~ (6:1), defoamers defoaming properties and good stability, Furthermore, cissing, craters, cissing and other defects can be improved. Li Weige like stearate or modified stearate, emulsifiers silica in mineral oil was added, heating and stirring the system was raised to substantially transparent, heat about 1.5 h; after cooling to prepare a dispersion of milled mineral oil defoamers. To ensure the mineral oil defoaming agent having defoaming effect and good dispersion; selecting the proper stearate and stearate modified varieties experiment, this new aqueous mineral oil is excellent in antifoaming property and safety, environmentally friendly, simple manufacturing process. Defoaming performance in a variety of water-based paint have had a very good performance, but also large-scale production. Currently, the mineral oil defoaming agent larger market share, the highest price, but mainly used in high PVC primer, flat and semigloss systems, and anti-foaming and foam breaking effect is less than polyethers and silicone-based antifoam agents. Alkyl silicone oil or the like is added silica was modified to improve their defoaming performance, enhance stability; improved effects on film gloss of such research is defoamer.

Zhang Zhen and so on to mineral oil, vegetable oil added to silica, alkyl silicon oil mixture to prepare a mineral oil defoaming agent. In order to increase the mutual solubility with mineral oil, the length of the carbon chain of alkyl silicone oil needs to be controlled. The results show that m (vegetable oil and its derivatives) : m (mineral oil) s (7:4) to (6:1), the defoaming performance and stability of the defoaming agent is good, in addition, the defects such as film depression, shrinkhole, shrink edge can be improved. Levig, etc. will stearate or modified stearate ester, emulsifier white carbon black into the mineral oil, heating and stirring heating to the system basically transparent, insulation about 1.5 h; In order to ensure that the mineral oil defoaming agent has good dispersion and defoaming effect, it is necessary to select the right steauic ester and modified stearate varieties through experiments, this new water-based mineral oil defoamer has excellent performance, and is safe, environmentally friendly and simple in manufacturing process. The defoaming performance in a variety of water-based coatings have a good performance, but also large-scale production. At present, mineral oil defoaming agent market share is large, the highest cost-effective, but mainly in high PVC primer, flat light and semi-light system, and the effect of defoaming and breaking less than polyether and silicone defoaming agent. The addition of alkyl silicon eilias or silica to modify, improve its defoaming performance and enhance stability, and improve the effect on the gloss of the coating film is the research direction of such defoaming agents.

Zhang Zhen et al. Added mineral oil and vegetable oil into the mixture of silica and alkyl silicone oil to prepare a mineral oil defoamer. In order to increase the mutual solubility with mineral oil, it is necessary to control the carbon chain length of alkyl silicone oil. The results show that m (vegetable oil and its derivatives): m (mineral oil) = (7:4) ～ (6:1), the antifoaming performance and stability of the antifoaming agent are good, in addition, the defects of the film, such as depression, shrinkage cavity and shrinkage edge, can be improved. Levig et al. Added stearate or modified stearate and emulsifier silica to mineral oil, heated and stirred until the system was basically transparent, and kept for about 1.5 h; after cooling, grinding and dispersing, a mineral oil defoamer was prepared. In order to ensure that mineral oil defoamer has good dispersion and defoaming effect, it is necessary to select appropriate stearate and modified stearate varieties through experiments. This new type of water-based mineral oil defoamer has excellent performance, safety, environmental friendliness and simple manufacturing process. Defoaming performance in a variety of water-based coatings have good performance, but also large-scale production. At present, mineral oil defoamers have a large market share and the highest cost performance, but they are mainly used in high PVC primer, flat and semi gloss systems, and their defoaming and breaking effects are not as good as those of polyether and organosilicon defoamers. The research direction of this kind of defoamer is to improve its defoaming performance and stability by adding alkyl silicone oil or silica.<br>