Super fast curing silver mirror back priming paint coating

Abstract

The invention relates to a primer base for the back of ultra fast curing glasses, the components of which by weight percentages are respectively: 28 percent to 35 percent of propyl modified resin mixed solution, 7 percent to 12 percent of crosslinking resin, 3 percent to 8 percent of epoxy resin, 24 percent to 28 percent of pigment, 2 percent to 4 percent of promoter and 14 percent to 18 percent of solvents. The materials are mixed evenly, stirred and ground until the fineness is qualified, thus obtaining the finished product of the primer base for the back of the glasses. The primer base for the back of the glasses prepared by the invention takes the propyl modified resin as a basic film forming substance and adopts amino resin as the crosslinking resin and the epoxy resin, the coloring pigment, the antirust pigment, a filler, the promoter and the various mixed solvents are added, so that the primer base after film forming has level and smooth surface, good adhesion, proper degree of hardness and brittleness, improved water and chemical resistance, good moisture and heat resistance and salt-mist resistance and especially obviously improved xylene wiping resistance and CASS resistance. During the process of application, curtain coating is stable, does not branch off and is totally dried during 6 minutes to 10 minutes of curing process at the temperature of 130 DEG C to 140 DEG C.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to an ultra-fast curing primer coating for the mirror back of a silver mirror. Background technique [0002] There are many ways to produce mirrors, and two are the most widely used: the first is to use vacuum aluminum plating, depositing a layer of aluminum on the glass surface as a reflective layer; the second is to chemically coat a glass surface with aluminum A layer of metallic silver is used as the reflective layer, and then a copper layer is plated on the silver film by chemical methods to increase the reflection effect and protective effect of the silver film. Since the metal layer of the mirror is easily eroded by the atmosphere, and the use environment is mostly in places with high temperature, large temperature difference and strong corrosion, the metal layer is easily corroded and tarnished or even peeled off, resulting in loss of optical performance. In order to prevent the met...

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Problems solved by technology

CN1371409A discloses "the quick-drying type high solid content coating based on modified alkyd resin", is a kind of acrylic acid modified alkyd resin normal temperature curing high solid composition, though has good performance, but due to coating structure Not dense enough, chemicals are easy to penetrate, which affects the durability of the mirror back reflection layer

CN1621430A discloses "modified dry oil alkyd resin and its curtain coating for mirror back metal coating protective coating", which needs to be dried at 180°C and 5 minutes, while the imported silver mirror production line used in large quantities in my country is dried The temperature is 130-150°C for 3 minutes, so the coating still does not meet the requirements