Raw material formula for automotive glass surface protective film and method of producing the same

Abstract

The invention relates to a raw material formulation of a surface protective film for automobile glass and a preparation method thereof. The raw material formulation of the surface protective film for the automobile glass comprises the following components: polyfluortetraethylene, ethyl acrylate, a catalyst, an emulsifying agent and water, wherein the polyfluortetraethylene has an iodic active end group, the polymerization degree of the polyfluortetraethylene is 4 to 6, and the molecular weight of the polyfluortetraethylene is 200 to 600 thousand. The preparation method for the surface protective film for the automobile glass comprises the following steps: (1) weighing the raw materials according to a proportion; (2) making the polyfluortetraethylene and the water react for 2 to 4 hours at a temperature of between 120 and 140 DEG C in the presence of a catalyst; (3) and then adding the ethyl acrylate into the mixture to react for 1 to 2 hours at a temperature of between 110 and 118 DEG C; and (4) adding the emulsifying agent into the mixture to homogenize and emulsify the mixture to obtain the final product. The prepared surface protective film for the automobile glass has strong binding force with glass, can reduce surface tension and surface friction factor of the glass, and improve oil resistance and water resistance of the glass; and a coating is not easy to damage.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a raw material formula of a protective film on the surface of automobile glass and a preparation method thereof. Background technique [0002] At present, the number of automobiles in China exceeds 30 million, and at the same time, it maintains an annual growth rate of 18%. The development of automobiles is gradually developing in the direction of privatization, gentrification and functionalization. However, in the cleaning of automobile glass, there are still problems with poor cleaning effect and environmental Large pollution, large energy loss, and high VOC content. [0003] Some high-end beauty stores in China have also launched automotive glass coating products. The basic component is silicone series. The low surface tension of silicone oil is used to treat the glass. However, silicone and glass have no bonding force and are easy to volatilize and lose, and have poor durabilit...

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Problems solved by technology

[0002] At present, the number of automobiles in China exceeds 30 million, and at the same time maintains an annual growth rate of 18%. The development of automobiles is gradually developing in the direction of privatization, high-grade, and functionalization. However, in the cleaning of automobile glass, there are still poor cleaning effects and environmental problems. Large pollution, large energy consumption, high VOC content, etc.

[0003] Some high-end beauty stores in China have also launched automotive glass coating products. The basic components are organosilicon, which uses the low surface tension of silicone oil to treat the glass. However, organosilicon has no bonding force with glass and is prone to volatilization and loss, and its durability is poor. , repeated construction must be carried out continuously, which brings troubles to users. At the same time, the surface boundary energy after silicone modification is about 30, and it does not have oil resistance but only water resistance.

In addition, the imported fluorine glass coatings sold in the market basically stop at dispersing polytetrafluoroethylene with an organic solvent system, and then carry out coating construction. This product has improved the shortcoming of poor durability of silicone in static tests, but due to polytetrafluoroethylene Tetrafluoroethylene C-F bond has extremely high bond energy, and its adhesion to various substrates is relatively poor. At the same time, the coating formed by the large molecular distance has a high porosity. When encountering external forces, it is easy to damage the coating and lose the modification effect. , poor oil resistance

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