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Mirror back protecting coating with superior adhesive force and anti-corrosion property, preparation and use thereof

A technology for protecting coatings and adhesion, applied in the direction of anti-corrosion coatings, natural resin coatings, coatings, etc., can solve the problems of difficult to achieve anti-corrosion performance, high cost, short service life, etc., achieve excellent adhesion, easy operation, The hard effect of the paint film

Inactive Publication Date: 2011-08-03
常州市弘可利办公用品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some disadvantages in these two methods: First, this technology can only be used to produce ordinary white mirrors. If you want to produce gold mirrors, tea mirrors, gray mirrors, etc. with decorative effects, you need to use glass of the corresponding color. High; secondly, both silver and aluminum are relatively susceptible to oxygen and water corrosion, and the service life is not long. For example, silver-plated mirrors generally require CASS test (copper accelerated acid salt spray test, used to detect the corrosion resistance of mirrors, see international standards ISO9227) up to 120 hours, while the aluminized mirror requires less
In addition, in order to prolong the service life of the arc ion coating mirror, the protective coating on the back of the mirror needs to have super anti-corrosion ability. Usually, the CASS test needs to reach more than 480 hours, which is 4 times that of the ordinary silver mirror protective coating. It is difficult for ordinary coatings to achieve This corrosion resistance

Method used

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  • Mirror back protecting coating with superior adhesive force and anti-corrosion property, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the dissolution of lac resin:

[0019] First take by weighing 50kg of flaky shellac resin and 50kg of ethanol, pour into a container and stir continuously until they are all dissolved, filter and store in a corresponding container for subsequent use, and the solids are divided into 50%.

Embodiment 2

[0020] Embodiment 2: the synthesis of fluorine-containing acrylic resin:

[0021] After mixing 60 kg of trifluoroethyl methacrylate, 20 kg of methyl methacrylate, 10 kg of hydroxyethyl methacrylate and 10 kg of acrylic acid, dissolve 4 kg of benzoyl peroxide in the mixed monomer. Here benzoyl peroxide acts as the initiator of the polymerization reaction. The selection and dosage of the initiator belong to common knowledge in this field, and many diazo compounds and peroxides can be used as the initiator. Initiators that can be used in this synthetic reaction include but are not limited to azobisisobutyronitrile, benzoyl peroxide, cumene hydroperoxide and the like.

[0022] In a 250L reactor, put 60 kg of xylene, pass in carbon dioxide or nitrogen to discharge the air, heat to reflux, keep in the reflux state, add the prepared monomer and initiator solution dropwise, and finish the drop within 4 hours . Then continue to reflux for 4 hours, and the polymerization reaction is ...

Embodiment 3

[0023] Embodiment 3: preparation and construction of mirror back protective coating

[0024] preparation:

[0025] Take by weighing 60 kilograms of shellac resin of 50% solid content in embodiment 1, 15 kilograms of 60% fluorine-containing acrylic acid in embodiment 2, 5 kilograms of coloring pigment iron red, 3 kilograms of extender pigment barium sulfate, 2 kilograms of talcum powder , 15 kg of solvent xylene, mixed evenly, and then sand-milled to a fineness below 25 μm, and the mirror back protection coating was obtained after discharge.

[0026] The total weight of the prepared coating is 100 kg, the solid content is 50±1%, the viscosity: 120-160s (coating -4 cups, 25°C)

[0027] Application construction:

[0028] Dilute the mirror back protection paint obtained above with a mixed solution of ethanol and xylene (1 / 1 weight ratio) to a viscosity of 30-60s (coated with -4 cups, 25°C), stir evenly, and spray it on the coated mirror. Baking at 150°C for 3 minutes can solidi...

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Abstract

The invention relates to paint. Protective paint of Back of mirror with excellent adhesive attraction and corrosion prevention performance is single component paint and comprises main film forming matters which are sclerolac and acrylics containing fluorine. The paint has excellent adhesive attraction both on a plurality of metal and nonmetal cladding, fast film forming speed, and excellent corrosion prevention. The CASS test reaches more than 480 hours. The paint has simple technique, simple operation, and uses single component construction. The pain film has excellent adhesive attraction ona plurality of film coating base materials, has good water resisting property, strong corrosion resistance and good flexibility, and is hard. The paint is particularly applicable to being used as theprotective paint of the back of mirror of voltaic arc ion plating mirrors.

Description

1. Technical field: [0001] The present invention relates to coatings, especially for mirror back protection coatings with excellent adhesion and anti-corrosion properties. 2. Background technology: [0002] Traditional mirror-making technology generally silver-plated or aluminum-plated on the glass surface as a reflective layer. There are some disadvantages in these two methods: First, this technology can only be used to produce ordinary white mirrors. If you want to produce gold mirrors, tea mirrors, gray mirrors, etc. with decorative effects, you need to use glass of the corresponding color. High; Secondly, both silver and aluminum are relatively susceptible to oxygen and water corrosion, and the service life is not long. For example, silver-plated mirrors generally require CASS test (copper accelerated acid salt spray test, used to detect the corrosion resistance of mirrors, see international standards ISO9227) reaches 120 hours, while the requirements for aluminum-coate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D193/00C09D5/08
Inventor 包柏青周加祥杨二霞何建生庄玉珍许继光
Owner 常州市弘可利办公用品有限公司