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Vacuum gold-plated primer

A technology of vacuum gold plating and primer, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor paint film adhesion, matt, phantom color, etc., to achieve fast fixing speed, good heat resistance, low cost effect

Inactive Publication Date: 2015-04-29
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Coatings prepared with traditional urethane oil are prone to produce illusion, matt and other phenomena under the harsh conditions required by vacuum coating, and there are problems such as poor adhesion of the paint film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The organically modified nano-SiO 2 The preparation method is: 10g nano-SiO 2 (particle size 15-20nm, purity 99.9%) dispersed in 200mL of deionized water, fully stirred to make it evenly dispersed, to obtain nano-SiO 2 suspension. Then take 20g of surfactant CTAB and dissolve it in 100mL of deionized water, and slowly drop it into nano-SiO 2 in suspension. After the dropwise addition was completed, the obtained mixed solution was ultrasonically dispersed at 80°C for 3 hours, the mixed solution was taken out, equilibrated at room temperature for 3 hours, filtered with suction, rinsed with twice distilled water, and then rinsed with deionized water until the AgNO 3 Dilute solution detection without Br - , the product obtained by suction filtration was dried under an infrared lamp, then ground, and passed through a 200-mesh sieve to obtain the organic modified nano-SiO 2 .

[0026] The preparation method of the organically modified nano-graphene is as follows: 10 g o...

Embodiment 1

[0029] A vacuum gold-plated primer, the addition of each component is: alkyd modified urethane oil 55g, rosin modified phenolic resin 20.5g, mixed drier 1g, anti-skinning agent 1g, organically modified nano-SiO 2 0.3g, organically modified nanographene 0.2g, 200 # Solvent oil 22g.

[0030] Its preparation method comprises the following steps:

[0031]1) Preparation of alkyd-modified urethane oil: add 5g linseed oil, 1g soybean oil, 10g of catalpa oil and 5g of pentaerythritol are passed through carbon dioxide gas, heated and stirred, and esterified at 200°C. When the acid value is measured to be less than 5mg KOH / g, it is the end of the reaction. After the reaction is completed, cool and filter to obtain the filtrate; In the same reactor, add the filtrate obtained in step 1) and 64g of 200# solvent oil, heat up to reflux for dehydration, and cool to 40°C after exhausting the water, then add 15g of toluene diisocyanate dropwise, and react at 60°C for 1.5h. Then heat up to 85...

Embodiment 2

[0035] A vacuum gold-plated primer, the addition of each component is: 60g of alkyd modified urethane oil, 22g of rosin modified phenolic resin, 1g of mixed drier, 1g of anti-skinning agent, organically modified nano-SiO 2 0.3g, organically modified nano-graphene 0.25g and 200 # 15.45g of mineral spirits.

[0036] Its preparation method comprises the following steps:

[0037] 1) Preparation of alkyd-modified urethane oil: in a reactor equipped with a condenser, a water separator, a thermometer, a carbon dioxide introduction pipe, an agitator, and with a jacket, add 7g of linseed oil, 2g of soybean oil, 12g of catalpa oil and 7g of pentaerythritol were passed through carbon dioxide gas, heated and stirred, and carried out esterification reaction at 210°C. When the acid value was measured to be less than 5mg KOH / g, it was the end point of the reaction. After the reaction was completed, cooling and filtering were carried out to obtain the filtrate; In the same reaction kettle, ...

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Abstract

The invention discloses a vacuum gold-plated primer which comprises the following components in percentage by mass: 55 to 60 percent of alcohol acid modified urethane oil, 20 to 25 percent of rosin modified phenolic resin, 1 to 2 percent of a dryer, 1 to 2 percent of an anti-skinning agent, 0.3 to 0.4 percent of organic modified nano SiO2, 0.2 to 0.3 percent of organic modified nano graphene and 11 to 22 percent of No.200 solvent oil. The alcohol acid modified urethane oil is prepared from the following components in percentage by mass: 5 to 10 percent of linseed oil, 1 to 5 percent of soybean oil, 10 to 15 percent of stillingia oil, 5 to 10 percent of pentaerythritol, 15 to 20 percent of toluene diisocynate and 40 to 64 percent of No.200 solvent oil. The vacuum gold-plated primer disclosed by the invention has the advantages of low cost, good adhesive force, high hardness, excellent heat resistance, controllable curing time, bright and full surface, high convenience in construction and the like and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of material protection, in particular to a vacuum gold-plated primer. Background technique [0002] With the development of plastic decorative coating and the continuous development of plastic instead of metal products, vacuum coating technology has been widely used in plastic metallized products. Vacuum coating on the surface of plastic products can endow plastic products with comprehensive properties such as metal appearance, high added value and good wear resistance. This method has been widely used in lamp parts, automotive spotlight reflectors, automotive decorative parts, cosmetic boxes, toys and Daily commodities and other fields. The basic technological process of the vacuum coating is: substrate pretreatment → primer coating → vacuum coating → topcoat coating. Vacuum coating coating plays a vital role in vacuum coating technology, and its performance will directly affect the performance of products. Since ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D161/14C09D7/12C08G18/76C08G18/68
CPCC08G18/68C08G63/48C08K2201/011C08L2201/08C09D7/62C09D175/14C08L61/14C08K9/04C08K3/36C08K3/04
Inventor 刘治田代梦琴金毕青张旗王成余智
Owner WUHAN INSTITUTE OF TECHNOLOGY
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