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Castor oil modified emulsion for improving silver powder directionality of water-based silver powder coating and preparation method

A technology of castor oil and orientation, which is applied in the field of castor oil modified emulsion and its preparation, and can solve the problems of prone to blooming and inhibiting the shrinkage of the coating film, etc.

Active Publication Date: 2021-04-30
HAOLISEN COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the deficiencies in the prior art, to provide a kind of castor oil modified emulsion that improves the orientation of the silver powder of water-based silver powder coating, it is used for water-based silver powder coating, in the film curing process, the triglyceride of castor oil The structure significantly inhibits the shrinkage of the coating film, plays a good role in the orientation of the silver powder, and improves the problem of easy blooming and whitening of the water-based silver powder coating due to poor orientation. At the same time, because the emulsion itself brings the silver powder orientation effect, no need Reuse of expensive silver powder alignment aids plays a good role in cost control

Method used

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  • Castor oil modified emulsion for improving silver powder directionality of water-based silver powder coating and preparation method
  • Castor oil modified emulsion for improving silver powder directionality of water-based silver powder coating and preparation method
  • Castor oil modified emulsion for improving silver powder directionality of water-based silver powder coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A. Castor oil modified emulsifier formula:

[0027]

[0028]

[0029] After vacuum dehydration of castor oil, add castor oil, methylene chloride, mercaptosuccinic acid, and photoinitiator UV1173 into a four-necked flask according to the stated dosage, raise the temperature to 50°C, and irradiate with ultraviolet light for 1.5h. Excess mercaptosuccinic acid is removed by washing with water, dichloromethane is removed in vacuum, and the pH is adjusted to 7-8 with a neutralizing agent to obtain a castor oil modified emulsifier.

[0030] B. Castor oil modified emulsion formula:

[0031] Pre-emulsion recipe:

[0032]

[0033] Put the vinyl monomer, deionized water, castor oil modified emulsifier and initiator in the reaction kettle according to the formula amount, and disperse for 20 minutes at a speed of 600r / min to prepare a pre-emulsion.

[0034] Weigh 88 parts of deionized water, 0.3 parts of ammonium persulfate, 0.3 parts of sodium bicarbonate in the reaction...

Embodiment 2

[0036] A. Castor oil modified emulsifier formula:

[0037]

[0038] After vacuum dehydration of castor oil, add castor oil, methylene chloride, mercaptosuccinic acid, and photoinitiator UV1173 into a four-necked flask according to the stated dosage, raise the temperature to 50°C, and irradiate with ultraviolet light for 1.5h. Excess mercaptosuccinic acid is removed by washing with water, dichloromethane is removed in vacuum, and the pH is adjusted to 7-8 with a neutralizing agent to obtain a castor oil modified emulsifier.

[0039] B. Castor oil modified emulsion formula:

[0040] Pre-emulsion recipe:

[0041]

[0042]

[0043] Put the vinyl monomer, deionized water, castor oil modified emulsifier and initiator in the reaction kettle according to the formula amount, and disperse for 20 minutes at a speed of 600r / min to prepare a pre-emulsion.

[0044] Weigh 88 parts of deionized water, 0.3 parts of ammonium persulfate, 0.3 parts of sodium bicarbonate in the reaction...

Embodiment 3

[0045] Embodiment 3 (blank experiment)

[0046] B. Blank lotion formula:

[0047] Pre-emulsion recipe:

[0048]

[0049]

[0050] Put the vinyl monomer, deionized water, emulsifier OP-10 and initiator in the reaction kettle according to the formula amount, and disperse for 20 minutes at a speed of 600r / min to prepare a pre-emulsion.

[0051] Weigh 88 parts of deionized water, 0.3 parts of ammonium persulfate, 0.3 parts of sodium bicarbonate in the reaction kettle, stir at 200r / min, raise the temperature to 80°C, start the pre-emulsion, drop it for 4 hours, keep it warm for 1 hour, and cool down To below 50°C, add 6 parts of industrial ammonia water, adjust the pH to 7-8; filter and discharge to obtain a blank emulsion.

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Abstract

The invention relates to the field of water-based paint, in particular to castor oil modified emulsion for improving the silver powder directionality of water-based silver powder paint and a preparation method. The castor oil modified emulsion is prepared from the following components in parts by weight: 7 to 20 parts of castor oil modified emulsifier, 27 to 63 parts of vinyl monomer, 131 to 158 parts of deionized water, 0.3 to 0.9 part of initiator, 0.2 to 0.4 part of pH buffering agent and 0.5 to 13 parts of neutralizer. According to the castor oil modified emulsion for improving the silver powder directionality of the water-based silver powder coating and the preparation method provided by the invention, an environment-friendly resource castor oil is used as an initial raw material, renewable resources are effectively utilized, an effective way for solving energy crisis is provided, and the silver powder directionality effect of the water-based silver powder coating is effectively improved; besides, use of expensive silver powder arrangement auxiliaries is avoided, and the production cost is saved.

Description

technical field [0001] The invention relates to the field of water-based paints, in particular to a castor oil modified emulsion for improving the orientation of silver powder in water-based silver powder paints and a preparation method thereof. Background technique [0002] Orientation of water-based silver powder is a major problem faced by the global industry. Silver powder flash paint has a special decorative effect, and its application is becoming more and more extensive. It plays a pivotal role in the color of automotive paint. It is used in machine tools, TV casings, VCD casings, and mobile phone casings. etc., even wall decorations are available. Due to its flaky structure, silver powder has alignment problems in the paint. If the arrangement of silver powder is not well controlled, the color will not meet the requirements, and it will be difficult to construct, prone to blooming, and will eventually affect the decorative effect. Therefore, how to control the arrang...

Claims

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Application Information

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IPC IPC(8): C08F289/00C08F220/20C08F220/14C08F212/08C08F220/18C08F220/06C09D7/65C09D5/10
CPCC08F289/00C09D7/65C09D5/103C08F220/20C08F220/14C08F212/08C08F220/1804C08F220/06
Inventor 郑子童周贤刘薇薇赵颖柳昀杜怀凯陈诚
Owner HAOLISEN COATING SHANGHAI