CN103360902A - Ultra-low temperature resistant epoxy asphalt coating and preparation method thereof - Google Patents
Ultra-low temperature resistant epoxy asphalt coating and preparation method thereof Download PDFInfo
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- CN103360902A CN103360902A CN201310307244XA CN201310307244A CN103360902A CN 103360902 A CN103360902 A CN 103360902A CN 201310307244X A CN201310307244X A CN 201310307244XA CN 201310307244 A CN201310307244 A CN 201310307244A CN 103360902 A CN103360902 A CN 103360902A
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Abstract
The invention provides an ultra-low temperature resistant epoxy asphalt coating comprising a component A and a component B according to a weight ratio of 2-3:1. The component A is epoxy resin; the component B is prepared from asphalt, anhydride, polyether polyol, a curing agent and sulfuric acid in parts by weight. The invention also provides a preparation method for the ultra-low temperature resistant epoxy asphalt coating. The epoxy asphalt coating has not only cohesive force but also certain toughness, and excellent low temperature resistance of the epoxy asphalt coating is greatly improved. Therefore, the quality of coating products is improved, the raw materials are fully utilized, the waste of the raw materials is reduced, the cost is saved, so the epoxy asphalt coating can adapt to the frequent temperature shrinkage in northern severe cold seasons.
Description
Technical field
The present invention relates to the painting technical field, be specifically related to coal tar-epoxy coating of a kind of anti-very low temperature and preparation method thereof.
Background technology
Coal tar-epoxy coating is a class protective system that occurs the sixties in 20th century, it combines sticking power, physical strength and the solvent resistance of acid-and base-resisting, water tolerance and the Resins, epoxy of pitch, anticorrosive coating kind for good is widely used in the industries such as water conservancy, petrochemical complex, shipbuilding and transportation.Having excellent water-resistance of epoxy coal tar coating is immersed in the water 10 days, its water-intake rate only 0.1% ~ 0.2%; The erosion of the waterproof and more anti-chemical of paint film; Coating still has good wettability to the steel surface that does not fully eliminate rust; Cheap; Solids content is high, can obtain thick film.
Coal tar-epoxy coating is through the three-dimensional interpenetrating polymer network thermosetting material of a kind of cross-linking density of curing reaction formation " overall situation is low, local high ", makes it have excellent resistance to elevated temperatures.But under low temperature condition, coal tar-epoxy coating is along with the reduction of temperature, and its intensity and stiffness obviously increase, but its deformability significantly descends, namely fragility increase, toughness drop, low temperature effect tensile strength and the deformability of this coating.Since frequently freeze-thaw cycle effect and strong uviolizing so that the epoxy bitumen material accelerated deterioration, become fragile, cohesive force sharply descends, the stress relaxation performance weakens greatly, causes at last the tired at low temperatures crack that produces of coating.In a single day crackle appears in coating, its self-healing that can not heat up, thus can under the Conditionings such as various load, water, mist, accelerate the failure, and form large-area destruction, thus limited existing coal tar-epoxy coating in the use in northern severe cold place.So the coal tar-epoxy coating that uses at low temp area not only should possess outside the cohesive force, more should possess certain toughness, to adapt to frequently temperature shrinkage.
In addition, because the solubleness of Resins, epoxy and pitch is relevant larger, so the consistency between them is poor, easily produces layering, cohesion and segregation phenomenon, thereby affected the retentivity of paint coatings.
Summary of the invention
Purpose of the present invention will provide a kind of coal tar-epoxy coating of anti-very low temperature exactly, improves the resistance to low temperature of coating and adapts to frequently low-temperature shrink.
Another object of the present invention provides a kind of preparation method of the coal tar-epoxy coating of anti-very low temperature.
In order to achieve the above object, the invention provides a kind of coal tar-epoxy coating of anti-very low temperature, it is characterized in that: formed for 2-3:1 by weight by component A and component B; Wherein component A is Resins, epoxy; Described component B is prepared from by weight by following component:
Further, described Resins, epoxy is the bisphenol A-type solid epoxy, and epoxy equivalent (weight) is 450-500.
Further, described acid anhydrides is that mass percent is maleic anhydride solution, phthalic acid anhydride solution or the inclined to one side phthalic acid anhydride solution of 3-5%.
Further, described polyether glycol is polyoxypropyleneglycol, and described solidifying agent is polymeric amide.
Another object of the present invention provides a kind of method for preparing the coal tar-epoxy coating of above-mentioned anti-very low temperature, may further comprise the steps:
(1) by proportioning pitch and acid anhydrides being put into reactor stirs;
(2) (1) is warming up to 120-135 ℃ and adds again polyether glycol and sulfuric acid, reacted 120-150 minute;
(3) add again solidifying agent and mix 30-60 minute, get component B;
(4) with component B and component A Resins, epoxy by weight for 1:2-3 mixes, stir, filter and to get the coal tar-epoxy coating of anti-very low temperature.
Because the low temperature flexibility of polyether glycol is excellent, it not only has preferably consistency with Resins, epoxy, also react with the free state acid anhydrides in the cis-butenedioic anhydride reaction process generation cis-butenedioic anhydride pitch of pitch and acid anhydrides, not only consumed free acid anhydrides, the peculiar smell of also having avoided coating to bring because of the acid anhydrides distillation in construction process has been avoided the injury healthy to the workmen; Simultaneously because the reaction generation low temperature modification of polyether glycol and acid anhydrides, greatly improved low temperature resistant superior that bituminous epoxy is coated with.So improved the quality of coating products, and utilized fully starting material, reduce raw-material waste, save cost.
Cis-butenedioic anhydride pitch is by being cross-linked to form network-like structure, and the low temperature modification agent that polyether glycol and acid anhydrides form exists with linear chain, forms toughness reinforcing body between the two, when making coating be subject to impact energy, and the effect that can play stress dispersion and meet with stresses.So coal tar-epoxy coating of the present invention not only has stronger mechanical property, also has very strong elasticity, to adapt to frequently temperature shrinkage and do not ftracture.
Coal tar-epoxy coating of the present invention can use in northern severe cold local season, and it not only should possess outside the cohesive force, more should possess certain toughness, to adapt to frequently temperature shrinkage.
The present invention combines Resins, epoxy with coal tar pitch, both brought into play film forming properties and the Corrosion Protection of Resins, epoxy excellence, has solved preferably again the difficult problems such as the trickling of bituminous material high temperature, brittle fracture under low temperature.The coating that adopts Resins, epoxy and coal tar pitch cheap, easy construction to be mixed with combines the advantage of the two, has improved the Corrosion Protection of coating.
Epoxy coal tar coating of the present invention is applied-40 ℃ of conditions, and the test specimen coating curing was placed on one 60 ℃ after 100 days, and the tensile strength of its test specimen and deformability significantly do not change, and illustrate that coating of the present invention has resistance to low temperature.
The coating protection time of the present invention is long, its use after 5 years corrosion protection coating non-foaming, wrinkle resistant, do not chap, do not peel off.Can extensively be adapted to the Pipeline Coating for Corrosion Preventions such as buried combustion gas, tap water, sewage, seawater, oil, petroleum storage tanks, gas chamber inside and outside wall are anticorrosion; The mechanical anti-corrosions such as drilling unit, anticorrosion and metallurgical, mechanical, building materials peculiar to vessel, printing and dyeing, papermaking, weaving, coal mining; And the aspects such as antirust paint film such as steel plate, steel pipe, angle steel all can reach not thoroughly wet corrosion protection coating.
Embodiment
The present invention is further elaborated below in conjunction with embodiment.
Embodiment one:
(1) by proportioning 50 parts of 100 parts of pitches and 3% maleic anhydride solution being put into reactor stirs;
(2) (1) is warming up to 120 ℃ and adds again 2 parts of polyoxypropyleneglycols and 10 parts in sulfuric acid, reacted 120 minutes;
(3) add again 50 parts of polymeric amide and mix 30 minutes, get component B;
(4) with component B and component A bisphenol A-type solid epoxy by weight for 1:2 mixes, stir, filter and to get the coal tar-epoxy coating of anti-very low temperature.
Embodiment two:
(1) by proportioning 50 parts of 100 parts of pitches and 5% phthalic acid anhydride solutions being put into reactor stirs;
(2) (1) is warming up to 135 ℃ and adds again 3.5 parts of polyoxypropyleneglycols and 20 parts in sulfuric acid, reacted 150 minutes;
(3) add again 50 parts of polymeric amide and mix 30 minutes, get component B;
(4) with component B and component A bisphenol A-type solid epoxy by weight for 1:3 mixes, stir, filter and to get the coal tar-epoxy coating of anti-very low temperature.
Embodiment three:
(1) by proportioning 40 parts of 100 parts of pitches and 5% inclined to one side phthalic acid anhydride solutions being put into reactor stirs;
(2) (1) is warming up to 120 ℃ and adds again 2 parts of polyoxypropyleneglycols and 20 parts in sulfuric acid, reacted 150 minutes;
(3) add again 80 parts of polymeric amide and mix 60 minutes, get component B;
(4) be 1:2 by weight with component B and component A bisphenol A-type solid epoxy.5 mix, and stir, filter and to get the coal tar-epoxy coating of anti-very low temperature.
Embodiment four
(1) by proportioning with 100 parts of pitches and 4% maleic anhydride solution, phthalic acid anhydride solution or partially 45 parts of phthalic acid anhydride solutions put into reactor and stir;
(2) (1) is warming up to 130 ℃ and adds again 3 parts of polyoxypropyleneglycols and 15 parts in sulfuric acid, reacted 140 minutes;
(3) add again 5 parts of polyamide 6s and mix 40 minutes, get component B;
(4) with component B and component A bisphenol A-type solid epoxy by weight for 1:2 mixes, stir, filter and to get the coal tar-epoxy coating of anti-very low temperature.
Above described only be that preferred implementation of the present invention is described; be not that scope of the present invention is limited; design under the spiritual prerequisite not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical solution of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. the coal tar-epoxy coating of an anti-very low temperature is characterized in that: be comprised of for 2-3:1 by weight component A and component B; Wherein component A is Resins, epoxy; Described component B is prepared from by weight by following component:
2. the coal tar-epoxy coating of anti-very low temperature according to claim 1, it is characterized in that: described Resins, epoxy is the bisphenol A-type solid epoxy, epoxy equivalent (weight) is 450-500.
3. the coal tar-epoxy coating of anti-very low temperature according to claim 1 is characterized in that: described acid anhydrides is that mass percent is the maleic anhydride solution, phthalic acid anhydride solution of 3-5% or phthalic acid anhydride solution partially.
4. the coal tar-epoxy coating of anti-very low temperature according to claim 1, it is characterized in that: described polyether glycol is polyoxypropyleneglycol, described solidifying agent is polymeric amide.
5. method for preparing such as the coal tar-epoxy coating of each described anti-very low temperature of claim 1-4 is characterized in that: may further comprise the steps:
(1) by proportioning pitch and acid anhydrides being put into reactor stirs;
(2) (1) is warming up to 120-135 ℃ and adds again polyether glycol and sulfuric acid, reacted 120-150 minute;
(3) add again solidifying agent and mix 30-60 minute, get component B;
(4) with component B and component A Resins, epoxy by weight for 1:2-3 mixes, stir, filter and to get the coal tar-epoxy coating of anti-very low temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310307244XA CN103360902A (en) | 2013-07-22 | 2013-07-22 | Ultra-low temperature resistant epoxy asphalt coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310307244XA CN103360902A (en) | 2013-07-22 | 2013-07-22 | Ultra-low temperature resistant epoxy asphalt coating and preparation method thereof |
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| CN103360902A true CN103360902A (en) | 2013-10-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079189A (en) * | 2019-04-26 | 2019-08-02 | 邵阳把兄弟新材料科技有限公司 | A kind of epoxy coating and preparation method thereof |
| CN110229617A (en) * | 2019-07-16 | 2019-09-13 | 正邦(广州)新材料有限公司 | A kind of creepage type bituminous epoxy and preparation method thereof |
| CN113637381A (en) * | 2021-09-17 | 2021-11-12 | 淮阴师范学院 | Thermosetting epoxy polyether-ether-ketone composite coating and preparation method and application thereof |
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| KR20040005310A (en) * | 2002-07-09 | 2004-01-16 | 삼화페인트공업주식회사 | Manufacturing method of low temperature hardener and epoxy coating containing the hardener |
| CN101747826A (en) * | 2009-11-27 | 2010-06-23 | 广州擎天实业有限公司 | Low temperature curing epoxy low-gloss powder coating and preparation method thereof |
| CN102863807A (en) * | 2012-10-17 | 2013-01-09 | 北京碧海舟腐蚀防护工业股份有限公司 | Epoxy asphalt and preparation method thereof, as well as concrete containing same |
| CN103102478A (en) * | 2013-01-21 | 2013-05-15 | 卡德莱化工(珠海)有限公司 | Cashew nut shell oil alkyd resin and preparation method thereof |
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2013
- 2013-07-22 CN CN201310307244XA patent/CN103360902A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20040005310A (en) * | 2002-07-09 | 2004-01-16 | 삼화페인트공업주식회사 | Manufacturing method of low temperature hardener and epoxy coating containing the hardener |
| CN101747826A (en) * | 2009-11-27 | 2010-06-23 | 广州擎天实业有限公司 | Low temperature curing epoxy low-gloss powder coating and preparation method thereof |
| CN102863807A (en) * | 2012-10-17 | 2013-01-09 | 北京碧海舟腐蚀防护工业股份有限公司 | Epoxy asphalt and preparation method thereof, as well as concrete containing same |
| CN103102478A (en) * | 2013-01-21 | 2013-05-15 | 卡德莱化工(珠海)有限公司 | Cashew nut shell oil alkyd resin and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079189A (en) * | 2019-04-26 | 2019-08-02 | 邵阳把兄弟新材料科技有限公司 | A kind of epoxy coating and preparation method thereof |
| CN110229617A (en) * | 2019-07-16 | 2019-09-13 | 正邦(广州)新材料有限公司 | A kind of creepage type bituminous epoxy and preparation method thereof |
| CN110229617B (en) * | 2019-07-16 | 2021-07-30 | 正邦(广州)新材料有限公司 | Creep type epoxy asphalt and preparation method thereof |
| CN113637381A (en) * | 2021-09-17 | 2021-11-12 | 淮阴师范学院 | Thermosetting epoxy polyether-ether-ketone composite coating and preparation method and application thereof |
| CN113637381B (en) * | 2021-09-17 | 2023-01-03 | 淮阴师范学院 | Thermosetting epoxy polyether-ether-ketone composite coating and preparation method and application thereof |
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Application publication date: 20131023 |