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Water-based woodware sealing oil emulsion and preparation method thereof

A kind of oil emulsion and water-based technology, applied in the direction of coating, etc., can solve the problems of high cost of modified acrylate emulsion, limit the application of water-based wood coatings, and difficult to promote water-based wood coatings, etc., achieve excellent wetting and penetration, reduce load, VOC reduction effect

Inactive Publication Date: 2017-12-12
东莞市同丰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of silicone monomers or fluorine-containing vinyl monomers, it is difficult to promote them in waterborne wood coatings
[0005] The disadvantage of the wood sealant emulsion in the prior art is that the cost of preparing the modified acrylate emulsion with excellent performance is high, thus limiting its application in water-based wood coatings
[0006] For the problems in related technologies, no effective solutions have been proposed yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Accurately weigh the following raw materials by weight: 15 parts of E-12 epoxy resin, 5 parts of methacrylic acid, 5 parts of acrylic acid, 25 parts of butyl acrylate, 5 parts of hydroxypropyl methacrylate, 5 parts of dihydrazine oxalate , 35 parts of styrene, 0.5 parts of diethylmethylamine, 1.0 parts of sodium dodecylbenzenesulfonate, 0.5 parts of polyvinyl alcohol and 0.5 parts of alkylphenol polyoxyethylene ether.

[0031] The above raw materials were added into deionized water, and emulsified in a four-neck flask for 20 minutes to prepare a pre-emulsion, which was set aside.

[0032] In a 500mL four-neck flask equipped with a stirrer, a thermometer, a reflux condenser and a constant pressure dropping funnel, add 10 parts of the above-mentioned pre-emulsion.

[0033] While stirring, add 0.5 parts of sodium dodecylbenzenesulfonate and 0.5 parts of alkylphenol polyoxyethylene ether, and raise the temperature to 80°C.

[0034] Add 10 parts of solution A and react for ...

Embodiment 2

[0039] Accurately weigh the following raw materials in parts by weight: 20 parts of E-20 epoxy resin, 5 parts of methacrylic acid, 30 parts of butyl acrylate, 10 parts of hydroxypropyl methacrylate, 5 parts of dihydrazine oxalate, 25 parts of benzene Ethylene, 0.5 part of triethylamine, 1.0 part of sodium dodecylbenzene sulfonate, 0.5 part of polyvinyl alcohol and 0.5 part of fatty alcohol polyoxyethylene ether.

[0040] The above raw materials were added into deionized water, and emulsified in a four-neck flask for 18 minutes to prepare a pre-emulsion, which was set aside.

[0041] In a 500mL four-neck flask equipped with a stirrer, a thermometer, a reflux condenser and a constant pressure dropping funnel, add 10 parts of the above-mentioned pre-emulsion.

[0042] While stirring, add 0.5 parts of sodium dodecylbenzenesulfonate and 0.5 parts of fatty alcohol polyoxyethylene ether, and raise the temperature to 80°C.

[0043] Add 10 parts of solution A and react for 18 minutes....

Embodiment 3

[0048] Accurately weigh the following raw materials by weight: 10 parts of E-44 epoxy resin, 5 parts of methacrylic acid, 5 parts of acrylic acid, 30 parts of butyl acrylate, 15 parts of hydroxyethyl methacrylate, 5 parts of nitrogen methylol propylene Amine, 30 parts of styrene, 0.5 part of ammonia water, 1.0 part of sodium dodecylbenzenesulfonate and 0.5 part of alkylphenol ethoxylates.

[0049] Add the above-mentioned raw materials into deionized water, and emulsify in a four-neck flask for 22 minutes to prepare a pre-emulsion for later use.

[0050] In a 500 mL four-neck flask equipped with a stirrer, a thermometer, a reflux condenser and a constant pressure dropping funnel, add 30 parts of the above-mentioned pre-emulsion.

[0051] While stirring, add 0.5 parts of sodium dodecylbenzenesulfonate and 0.5 parts of alkylphenol polyoxyethylene ether to raise the temperature to 80°C.

[0052] Add 10 parts of solution A and react for 22 minutes. The solution A contains sodium b...

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Abstract

The invention discloses a water-based woodware sealing oil emulsion. The water-based woodware sealing oil emulsion is prepared from the following materials: epoxy resin, acrylic monomers, emulsifiers, potassium persulfate, sodium hydrogen carbonate, pH regulators and deionized water. On the other hand, the invention provides a preparation method of the water-based woodware sealing oil emulsion. The method comprises the following steps: S1, adding 10-20 parts by weight of epoxy resin, 80-90 parts of acrylic monomers, 0.5 part by weight of pH regulators and 1.5-2 parts by weight of emulsifiers into deionized water, and emulsifying for 18-22 minutes to obtain a pre-emulsion; S2, taking part of the pre-emulsion, adding emulsifiers, increasing the temperature to 80 DEG C, then adding a solution A and reacting for 18-22 minutes; S3, dropwise adding the rest pre-emulsion and a solution B after the emulsion is light blue and the color is not deepened, controlling the dropwise adding time to be 2.5-3 hours, increasing the polymerization temperature to 85-88 DEG C; S4, continuously dropwise adding a potassium persulfate solution and keeping the temperature for 1-1.5 hours; and S5, reducing the temperature to 28-32 DEG C, adding the pH regulators for regulating the pH of the emulsion to be 8-9, and filtering the emulsion through a filtering screen.

Description

technical field [0001] The invention relates to the technical field of wood oil sealing emulsion, in particular to a water-based wood oil sealing emulsion and a preparation method thereof. Background technique [0002] Water-based coatings are the development trend of coatings, and water-based wood coatings not only require improving the physical properties of water-based wood coatings, narrowing the gap with oil-based wood coatings, but also reducing the cost of producing water-based wood coatings. The two can further promote the popularity of water-based wood coatings. [0003] Acrylate emulsion has been widely used in water-based wood coatings because of its incomparable advantages in cost compared with other types of emulsions, and its simple preparation process, mature technology, and fast drying speed of the coating film. However, as we all know, water-based acrylic wood coatings have a large gap with other types of water-based coatings in many physical properties, su...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F212/08C08F220/06C08F220/18C08F220/28C08F2/26C08F2/30C09D151/08
CPCC08F2/26C08F2/30C08F283/10C09D151/08C08F220/1804
Inventor 黄育朋
Owner 东莞市同丰高分子材料有限公司
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