CN103194135B - Preparation method for light-resistant coating - Google Patents

Preparation method for light-resistant coating Download PDF

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Publication number
CN103194135B
CN103194135B CN201310158409.1A CN201310158409A CN103194135B CN 103194135 B CN103194135 B CN 103194135B CN 201310158409 A CN201310158409 A CN 201310158409A CN 103194135 B CN103194135 B CN 103194135B
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nano
graphene
coating
emulsion
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CN103194135A (en
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左广玲
叶红勇
潘雨沛
赵增成
卢小川
黄继军
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WUHAN HUAZHONG KEDA FINE CHEMICAL CO., LTD.
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段宝荣
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Abstract

The invention discloses a preparation method for a light-resistant coating. The preparation method for a light-resistant coating comprises the following steps of: adding 1-5% by weight of acrylic acid, 25-35% by weight of hydroxyethyl acrylate, 2-8% by weight of polycarbonate diol, 0.5-0.9 by weight of potassium peroxodisulfate, and 64-74.6 by weight of graphene emulsion; dripping potassium peroxodisulfate solution for 1 hour with a constant speed; and reacting for 2-4 hours to obtain the light-resistant coating. The method is simple in preparation process; and the prepared coating is good in light resistance and strong in adhesion force.

Description

A kind of preparation method of lightfast coating material
Technical field
The present invention relates to a kind of preparation method of coating, particularly a kind of preparation method of lightfast coating material.
Background technology
Acrylic ester emulsion coatings is a most widely used class emulsion coatings, it both can be applied in building industry and do coating for internal and external wall and roof waterpoof material, can be applied in textile industry again and do textile coating agent, in leather industry, do hide finishes, also can be applied to metal, wood coating etc. simultaneously.But because the field used often contacts sunlight, owing to containing UV-light harmful to colored objects in a large number in solar ray, its wavelength about 290 ~ 460nm, these harmful UV-light, by redoxomorphism chemically, make the change of coating generation color.
Graphene is the thinnest in the world is at present the hardest nano material also, and it is almost completely transparent, only absorbs the light of 2.3%; Matting agent can make incident light produce scattering and be eliminated aurora, reduces transparency, increases whiteness.Polycarbonate diol is because of its compound with regular structure, and molecular weight distribution is little, therefore can obtain all kinds of high-performance low-viscosity coating.Polycarbonate diol is not because itself is containing ester bond, compared with the glycol of general polyester, polyethers system, show quite excellent mechanical property, resistance to hydrolysis, thermostability, weathering resistance and chemical resistance, also there is good photostabilization simultaneously, Graphene, matting agent, polycarbonate diol, nano material synergistic can be improved resistance to light of coating.
Summary of the invention
The invention provides a kind of preparation method of lightfast coating material, adopt Graphene, matting agent, polycarbonate diol, nano material synergistic to improve resistance to light of coating.The technical barrier solved is Graphene good distribution in emulsion, arranges in pairs or groups with the ratio of matting agent, polycarbonate diol, nano material simultaneously, plays synergistic effect.
Present invention employs following technical scheme:
A preparation method for lightfast coating material, is characterized in that: it is made via following steps:
(1), the preparation of graphene emulsion: sodium lauryl sulphate is soluble in water, add Graphene, matting agent, nano material, with emulsification pretreatment machine at the emulsified 60 ~ 80min of 500 ~ 1000r/min, the ultrasonic wave sound intensity 0.12 ~ 0.30 W/cm 2, emulsification 20 ~ 50min, obtains graphene emulsion;
The each component ratio of graphene emulsion: sodium lauryl sulphate weight is 5 ~ 9%, Graphene weight is 1 ~ 3%, and matting agent weight is 0.1 ~ 0.5%, and nano material weight is 0.2 ~ 0.6%, all the other are water;
(2), under 70 ~ 90 DEG C of conditions, vinylformic acid, Hydroxyethyl acrylate, polycarbonate diol are joined in above-mentioned graphene emulsion, at the uniform velocity drip potassium persulfate solution, time for adding 1h, reaction times 2 ~ 4h, obtains lightfast coating material;
Each amounts of components: vinylformic acid weight is 1 ~ 5%, Hydroxyethyl acrylate weight is 25 ~ 35%, and polycarbonate diol weight is 2 ~ 8%, and Potassium Persulphate weight is 0.5 ~ 0.9%, and graphene emulsion weight is 64 ~ 74.6%.
Matting agent is titanium dioxide, granularity <5 μm; Nano material is any one in nano aluminium oxide, nano zircite, nano silicon; The number-average molecular weight of polycarbonate diol is 1000g/mol.
Advantage of the present invention is:
The present invention utilizes Graphene, matting agent, nano material and polycarbonate diol to increase resistance to light of coating, has the simple outstanding feature of synthesis technique.In addition, coating prepared by the present invention has better photostabilization, and simultaneously the clinging power of coating and mechanical property also have certain improvement.
Embodiment
The present invention is further illustrated below in conjunction with embodiment
Embodiment one
(1), the preparation of graphene emulsion: sodium lauryl sulphate 5g, water 93.7g are joined in 250ml beaker, add Graphene 1g, titanium dioxide 0.1g, nano aluminium oxide 0.2g, with emulsification pretreatment machine at the emulsified 60min of 500r/min, ultrasonic wave sound intensity 0.12W/cm 2, emulsification 20min, obtains graphene emulsion;
(2), under 70 DEG C of conditions, vinylformic acid 1g, Hydroxyethyl acrylate 25g, polycarbonate diol 2g, above-mentioned graphene emulsion 64g are joined stirring reaction in 250ml there-necked flask, at the uniform velocity the water-soluble potassium persulfate solution 5.5g of dropping 5g is in there-necked flask, time for adding 1h, reaction times 2h, obtains lightfast coating material.
Embodiment two
(1), the preparation of graphene emulsion: sodium lauryl sulphate 9g, water 86.9g are joined in 250ml beaker, add Graphene 3g, titanium dioxide 0.5g, nano zircite 0.6g, with emulsification pretreatment machine at the emulsified 80min of 1000r/min, the ultrasonic wave sound intensity 0.30 W/cm 2, emulsification 50min, obtains graphene emulsion;
(2), under 90 DEG C of conditions, vinylformic acid 5g, Hydroxyethyl acrylate 35g, polycarbonate diol 8g, above-mentioned graphene emulsion 74.6g are joined stirring reaction in 250ml there-necked flask, at the uniform velocity the water-soluble potassium persulfate solution 5.9g of dropping 5g is in there-necked flask, time for adding 1h, reaction times 4h, obtains lightfast coating material.
Embodiment three
(1), the preparation of graphene emulsion: sodium lauryl sulphate 7g, water 90.3g are joined in 250ml beaker, add Graphene 2g, titanium dioxide 0.3g, nano silicon 0.4g, with emulsification pretreatment machine at the emulsified 70min of 750r/min, the ultrasonic wave sound intensity 0.21 W/cm 2, emulsification 35min, obtains graphene emulsion;
(2), under 80 DEG C of conditions, vinylformic acid 3g, Hydroxyethyl acrylate 30g, polycarbonate diol 5g, above-mentioned graphene emulsion 69g are joined stirring reaction in 250ml there-necked flask, at the uniform velocity the water-soluble potassium persulfate solution 5.7g of dropping 5g is in there-necked flask, time for adding 1h, reaction times 3h, obtains lightfast coating material.
Table one is the photostabilization test data of the lightfast coating material prepared by the embodiment of the present invention two.Wherein coating 1 market acrylic resin SB-300; Coating 2 is coating prepared by embodiment two.
In order to quantitative description resistance to light of coating energy, adopt spectrophotometer to detect, to obtain inverse difference △ E, describe resistance to light of coating.
The value of chromatism change of coating under the table one different UV-irradiation time
Time/h Coating 1 △ E Coating 2 △ E
60 4.2 0.6
120 4.6 0.8
240 4.1 0.9
300 5.3 0.9
360 5.2 1.1
420 5.9 1.1
480 6.4 1.1
540 8.6 1.2
600 9.2 1.2
△ E represents colour-change degree, and △ E is larger, and color change is more obvious.In general, △ E value is the slight change of 0 ~ 1.5 genus; △ E value is that 1.5 ~ 3.0 genus can feel change; △ E value be 3.0 ~ 6.0 belong to considerable change (apparatus measures error delta≤1) (see Wang Fang, party's climax, Wang Liqin, the photodegradation of several organic historical relic's protection polymer coating.Northwest University's journal, 2005,35 (5): 565).
Can find from table one, coating 2 obviously than the photostabilization of coating 1 good.

Claims (2)

1. ?a preparation method for lightfast coating material, is characterized in that: it is made via following steps:
(1), the preparation of graphene emulsion: sodium lauryl sulphate is soluble in water, add Graphene, matting agent, nano material, with emulsification pretreatment machine at the emulsified 60 ~ 80min of 500 ~ 1000r/min, the ultrasonic wave sound intensity 0.12 ~ 0.30 W/cm 2, emulsification 20 ~ 50min, obtains graphene emulsion;
The each component ratio of graphene emulsion: sodium lauryl sulphate weight is 5 ~ 9%, Graphene weight is 1 ~ 3%, matting agent weight is 0.1 ~ 0.5%, nano material weight is 0.2 ~ 0.6%, all the other are water, described matting agent is titanium dioxide, granularity <5 μm, nano material is any one in nano aluminium oxide, nano zircite, nano silicon;
(2), under 70 ~ 90 DEG C of conditions, vinylformic acid, Hydroxyethyl acrylate, polycarbonate diol are joined in above-mentioned graphene emulsion, at the uniform velocity drip potassium persulfate solution, time for adding 1h, reaction times 2 ~ 4h, obtains lightfast coating material;
Each amounts of components: vinylformic acid weight is 1 ~ 5%, Hydroxyethyl acrylate weight is 25 ~ 35%, and polycarbonate diol weight is 2 ~ 8%, and Potassium Persulphate weight is 0.5 ~ 0.9%, and graphene emulsion weight is 64 ~ 74.6%, and the total consumption of component is 100%.
2. the preparation method of lightfast coating material according to claim 1, is characterized in that: the number-average molecular weight of polycarbonate diol is 1000g/mol.
CN201310158409.1A 2013-05-02 2013-05-02 Preparation method for light-resistant coating Active CN103194135B (en)

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CN103819992B (en) * 2014-03-24 2016-07-06 常州市天安特种涂料有限公司 A kind of preparation method of lightfast coating material
CN104087149B (en) * 2014-07-21 2016-04-27 段宝荣 A kind of preparation method of light-resistant waterborne polyurethane coating
CN105153857B (en) * 2015-09-16 2018-05-04 河北晨阳工贸集团有限公司 Construction wall, furniture, metal light resistance water paint and adhesive preparation method
CN109957271A (en) * 2019-04-01 2019-07-02 段宝荣 Fast light, water soluble acrylic acid esters resin coating that film forming is fast and preparation method thereof
CN109929294A (en) * 2019-04-01 2019-06-25 段宝荣 Fast light, heat preservation water soluble acrylic acid esters resin coating and preparation method thereof
CN111117378A (en) * 2019-12-31 2020-05-08 朱大伟 Preparation method of light-resistant and waterproof coating

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US8163205B2 (en) * 2008-08-12 2012-04-24 The Boeing Company Durable transparent conductors on polymeric substrates
KR101035279B1 (en) * 2008-11-05 2011-05-18 주식회사 포스코 Resin Composition for Surface-treated Steel Sheet and Surface-treated Steel Sheet Using the Same
SG178444A1 (en) * 2009-08-21 2012-03-29 Lubrizol Advanced Mat Inc Hydrolytically stable polyurethane nanocomposites
ES2607961T3 (en) * 2010-07-12 2017-04-04 Hanwha Chemical Corporation Conductive coating composition and method for manufacturing a conductive layer using the same

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