CN102863592A - Preparation method for transparent thixotropic unsaturated polyester resin - Google Patents
Preparation method for transparent thixotropic unsaturated polyester resin Download PDFInfo
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- CN102863592A CN102863592A CN2012103958140A CN201210395814A CN102863592A CN 102863592 A CN102863592 A CN 102863592A CN 2012103958140 A CN2012103958140 A CN 2012103958140A CN 201210395814 A CN201210395814 A CN 201210395814A CN 102863592 A CN102863592 A CN 102863592A
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Abstract
The invention relates to a preparation method for a transparent thixotropic unsaturated polyester resin and belongs to the technical field of organic high molecule compound preparation. The preparation method includes the following steps that (1) dihydric alcohol, saturated dicarboxylic acid or acid anhydride and unsaturated dicarboxylic acid or acid anhydride are added in a container, and a polycondensation dehydration reaction is performed to obtain a resin A; (2) acrylic ester or a methacrylic ester crosslinking monomer is added in the resin A; (3) after uniformly mixing, fumed silica is added, and a high-speed dispersion is performed; and styrene can be added in the resin A in the step (2). The transparent thixotropic unsaturated polyester resin has the advantages that the thixotropy and sag resistance are good, the appearance transparency of the resin and cured substances with any thickness is high, substrates can be fully protected, and patterns of the substrates can be clearly presented.
Description
Technical field
The present invention relates to a kind of preparation method of unsaturated polyester, belong to the organic high molecular compound preparing technical field.
Background technology
Unsaturated polyester resin is to be dissolved in the cross-linking monomer (being generally vinylbenzene) and the thick liquid that forms by the chain macromolecule compound that diprotic acid or acid anhydrides and dibasic alcohol polycondensation form, and contains the unsaturated double-bond of non-aromatic in its molecular structure.Unsaturated polyester resin can cause crosslinking reaction with suitable initiator, at room temperature solidifies, and makes the thermosetting resin with three-dimensional crosslinking structure.Unsaturated polyester resin has good mechanical property, electrical property and resistance to chemical corrosion, and moulding process is easy, is being widely used aspect industry, agricultural, traffic, building and the national defense industry.
In recent years, the turnout sustainable growth of China's unsaturated polyester resin, development are rapidly.Wherein, during the protective layers such as making ferry glass reinforced plastic boat, artificial marble, piano woodenware, need to use thixotropy good, the simple unsaturated polyester resin of application property.This unsaturated polyester resin contains a certain amount of aerosil, to improve the thixotropy of resin, possesses good sag prevention and sprayability in construction process, can be so that goods have good protective layer and good mechanical property.Owing to added aerosil, such exterior of commodity be little muddiness to turbid liquid, directly affect the transparency behind the resin solidification, so that the ground lines of goods can not present clearly.
Common thixotroping unsaturated polyester resin has certain transparency after the curing in the market, but its thickness is generally less than 0.8mm.And when these thixotroping unsaturated polyester resins solidified rear thickness greater than 0.8mm, its transparency obviously reduced.When needs are effectively protected special substance, need certain thickness protective layer, do not affect again its sight, existing thixotroping unsaturated polyester resin can not reach this requirement.
Summary of the invention
It is good that the technical problem to be solved in the present invention provides a kind of thixotropy, and sag prevention is good, the preparation method of the thixotroping unsaturated polyester resin that the transparency is high.
In order to solve the problems of the technologies described above, the invention provides a kind of preparation method of transparent thixotroping unsaturated polyester resin, comprise the steps:
(1) in container, adds dibasic alcohol, monounsaturated dicarboxylic acid or acid anhydrides and unsaturated dibasic acid or acid anhydrides, through the polycondensation dehydration reaction, obtain Resin A;
(2) in Resin A, add acrylate or methacrylic ester cross-linking monomer; The chemical general formula of acrylate cross linked monomer is CH
2=CH-COOR, the chemical general formula of methacrylic ester cross-linking monomer are CH
2=C(CH
3)-COOR;
(3) mix after, add aerosil, carry out high speed dispersion.
For so that the transparent effect of prepared resin is better, a kind of preferred technical scheme is: the add-on of aforesaid propylene acid esters or methacrylic ester cross-linking monomer is 25～50% of Resin A total mass.
In order to solve the problems of the technologies described above, the present invention also provides a kind of preparation method of transparent thixotroping unsaturated polyester resin, comprises the steps:
(1) in container, adds dibasic alcohol, monounsaturated dicarboxylic acid or acid anhydrides and unsaturated dibasic acid or acid anhydrides, through the polycondensation dehydration reaction, obtain Resin A;
(2) in Resin A, add vinylbenzene, and acrylate or methacrylic ester cross-linking monomer;
(3) mix after, add aerosil, carry out high speed dispersion.
For so that the transparent effect of prepared resin is better, a kind of preferred technical scheme is: the add-on sum of above-mentioned cinnamic add-on and acrylate or methacrylic ester cross-linking monomer is 25～50% of Resin A total mass, and the add-on of described acrylate or methacrylic ester cross-linking monomer is more than or equal to 5% of Resin A total mass.
For so that the transparent effect of prepared resin is better, a kind of preferred technical scheme is: described acrylate or methacrylic ester cross-linking monomer are one or more in Hydroxyethyl acrylate, Propylene glycol monoacrylate, butyl acrylate, diacrylate propylene diester, three vinylformic acid Ji Wusi esters, diacrylate-Isosorbide-5-Nitrae-Ding diester, hydroxyethyl methylacrylate, methyl methacrylate, the Ethylene-glycol-dimethacrylate.
For so that prepared resin thixotropy is better, a kind of preferred technical scheme is: the add-on of above-mentioned aerosil is 0.5～2.0% of Resin A total mass.
For so that prepared resin quality is better, solidification effect is better, and a kind of preferred technical scheme is: be warming up to 190～220 ℃ in the above-mentioned steps (1) and carry out the polycondensation dehydration reaction, react to acid number and be less than or equal to 30mgKOH/g; Be cooled to 130～180 ℃ in the described step (2), adding quality is the Resorcinol of 100 ~ 300ppm of Resin A total mass; The high speed dispersion time in the described step (3) is 0.5～1.0h.
Above-mentioned dibasic alcohol is one or more in ethylene glycol, propylene glycol, glycol ether, dipropylene glycol, the neopentyl glycol, is fit to guarantee the used raw material of synthetic resins.
Above-mentioned monounsaturated dicarboxylic acid or acid anhydrides are one or more in Tetra hydro Phthalic anhydride, m-phthalic acid, terephthalic acid, the tetrahydrophthalic anhydride, are fit to guarantee the used raw material of synthetic resins.
Above-mentioned unsaturated dibasic acid or acid anhydrides are one or both in MALEIC ANHYDRIDE, the FUMARIC ACID TECH GRADE, are fit to guarantee the used raw material of synthetic resins.
The present invention has positive effect: transparent thixotroping unsaturated polyester resin preparation method of the present invention adopts acrylate or methacrylic ester cross-linking monomer; replace or Partial Replacement vinylbenzene cross-linking monomer; the thixotroping unsaturated polyester resin that makes directly is transparent liquid; be used for making ferry glass reinforced plastic boat; artificial marble; during the protective layer of piano woodenware; even protective layer is very thick; still can clearly present the lines of goods ground; product surface is smooth smooth and fullness ratio is high; also have simultaneously good mechanical property, and weather-proof; water-fast; corrosion-resistant; the performances such as wear resistance.Because this resin thixotropy is good, sag prevention is good, and easy construction is easy to prepare, has wide market outlook.
Description of drawings
Fig. 1 is the covering pattern effect figure of the transparent thixotroping unsaturated polyester resin casting matrix of the embodiment of the invention 1.
Fig. 2 is the covering pattern effect figure of the transparent thixotroping unsaturated polyester resin casting matrix of the embodiment of the invention 2.
Fig. 3 is the covering pattern effect figure of the transparent thixotroping unsaturated polyester resin casting matrix of the embodiment of the invention 3.
Fig. 4 is the covering pattern effect figure of the transparent thixotroping unsaturated polyester resin casting matrix of the embodiment of the invention 4.
Fig. 5 is the covering pattern effect figure of comparative example's 1 of the present invention thixotroping unsaturated polyester resin casting matrix.
Fig. 6 is the design sketch of the background color pattern when hiding without casting matrix.
Embodiment
(embodiment 1 transparent thixotroping unsaturated polyester resin)
The preparation method's of the transparent thixotroping unsaturated polyester resin of present embodiment concrete steps are as follows:
(1) in the four-hole container that nitrogen protection, agitator, thermometer and condensation fractionation plant are housed, adds 1.0mol ethylene glycol, 2.2mol propylene glycol, 1.5mol Tetra hydro Phthalic anhydride, 1.5mol MALEIC ANHYDRIDE; be warming up to 190 ℃ and carry out the polycondensation dehydration reaction; react to acid number less than 30mgKOH/g, generate Resin A.
(2) Resin A is cooled to 130 ℃, adding quality is the Resorcinol of the 100ppm of Resin A total mass, and 25% the hydroxyethyl methylacrylate that adds quality and be the Resin A total mass dilutes.
(3) mix after, add quality and be 1.0% aerosil (model that Wacker Chemie AG company produces is the aerosil of N20) of Resin A total mass, namely obtain transparent thixotroping unsaturated polyester resin behind the high speed dispersion 0.5h.
(embodiment 2 transparent thixotroping unsaturated polyester resins)
The preparation method's of the transparent thixotroping unsaturated polyester resin of present embodiment concrete steps are as follows:
(1) in the four-hole container that nitrogen protection, agitator, thermometer and condensation fractionation plant are housed, adds 1.6mol glycol ether, 1.6mol dipropylene glycol, 1.0mol Tetra hydro Phthalic anhydride, 2.0mol FUMARIC ACID TECH GRADE; be warming up to 205 ℃ and carry out the polycondensation dehydration reaction; react to acid number less than 30mgKOH/g, generate Resin A.
(2) Resin A is cooled to 180 ℃, adding quality is the Resorcinol of the 300ppm of Resin A total mass, and 50% the methyl methacrylate that adds quality and be the Resin A total mass dilutes.
(3) mix after, add quality and be 2.0% aerosil (model that Wacker Chemie AG company produces is the aerosil of T40) of Resin A total mass, namely obtain transparent thixotroping unsaturated polyester resin behind the high speed dispersion 1h.
(embodiment 3 transparent thixotroping unsaturated polyester resins)
The preparation method's of the transparent thixotroping unsaturated polyester resin of present embodiment concrete steps are as follows:
(1) in the four-hole container that nitrogen protection, agitator, thermometer and condensation fractionation plant are housed, adds 1.6mol glycol ether, 1.6mol neopentyl glycol, 1.6mol tetrahydrophthalic anhydride, 1.4mol FUMARIC ACID TECH GRADE; be warming up to 205 ℃ and carry out the polycondensation dehydration reaction; react to acid number less than 30mgKOH/g, generate Resin A.
(2) Resin A is cooled to 180 ℃, adding quality is the Resorcinol of the 200ppm of Resin A total mass, adds quality and is 20% vinylbenzene of Resin A total mass and 5% Propylene glycol monoacrylate and dilute.
(3) mix after, namely obtain transparent thixotroping unsaturated polyester resin after adding quality and be 0.5% aerosil (model that Wacker Chemie AG company produces is the aerosil of N20) high speed dispersion 0.8h of Resin A total mass.
(embodiment 4 transparent thixotroping unsaturated polyester resins)
The preparation method's of the transparent thixotroping unsaturated polyester resin of present embodiment concrete steps are as follows:
(1) add in the four-hole container that nitrogen protection, agitator, thermometer and condensation fractionation plant are housed 3.2mol propylene glycol, 1.0mol m-phthalic acid, be warming up to 220 ℃; react to acid number below 2; add the 2.0mol FUMARIC ACID TECH GRADE; be warming up to 210 ℃ and carry out the polycondensation dehydration reaction; react to acid number less than 20mgKOH/g, generate Resin A.
(2) Resin A is cooled to 150 ℃, adding quality is the Resorcinol of the 200ppm of Resin A total mass, and 25% the vinylbenzene, 15% hydroxyethyl methylacrylate and 10% the Propylene glycol monoacrylate that add quality and be the Resin A total mass dilute.
(3) mix after, add quality and be 1.0% aerosil (model that Wacker Chemie AG company produces is the aerosil of T40) of Resin A total mass, namely obtain transparent thixotroping unsaturated polyester resin behind the high speed dispersion 1.0h.
(comparative example's 1 thixotroping unsaturated polyester resin)
The preparation method's of the thixotroping unsaturated polyester resin of present embodiment concrete steps are as follows:
(1) in the four-hole container that nitrogen protection, agitator, thermometer and condensation fractionation plant are housed, adds 1.0mol ethylene glycol, 2.2mol propylene glycol, 1.5mol Tetra hydro Phthalic anhydride, 1.5mol MALEIC ANHYDRIDE; be warming up to 190 ℃ and carry out the polycondensation dehydration reaction; react to acid number less than 30mgKOH/g, generate Resin A.
(2) Resin A is cooled to 150 ℃, adding quality is the Resorcinol of the 200ppm of Resin A total mass, and 35% the vinylbenzene that adds quality and be the Resin A total mass dilutes.
(3) mix after, add quality and be 1.0% aerosil (model that Wacker Chemie AG company produces is the aerosil of N20) of Resin A total mass, namely obtain the thixotroping unsaturated polyester resin behind the high speed dispersion 1.0h.
Respectively the liquid resin chemical property of embodiment 1～4 and comparative example's 1 resulting unsaturated polyester resin is tested by GB/T 7193 " unsaturated polyester resin test method " and JIS K6901 " liquid unsaturated polyester resin testing method "; The casting resin physical and mechanical property is tested by GB/T 2567 " casting resin method for testing performance "; The heat-drawn wire of casting resin is tested by GB/T1634 " plastics bending load heat-drawn wire test method "; The Ba Keer hardness of casting resin is tested by GB/T3854 " fibre reinforced plastics Pasteur (Ba Keer) hardness test method "; Casting matrix adopts the colourless promotor RP-126 of Changzhou Huari New Material Co., Ltd. and the Butanox M-50 of Tianjin Akzo Nobel's superoxide company limited production to make.
The liquid resin chemical property of unsaturated polyester resin sees Table 1.
The chemical property contrast table of table 1 liquid resin
The physical and mechanical property of unsaturated polyester resin casting matrix sees Table 2.
The physical and mechanical property contrast table of table 2 casting resin
See Fig. 1 to Fig. 5, use respectively the casting matrix (thickness is 8mm) of embodiment 1～4 and comparative example's 1 resulting unsaturated polyester resin at the covering effect figure of background color pattern.The design sketch of the background color pattern when contrast hides without casting matrix and hide after design sketch, can find out that the transparency of casting matrix of embodiment 1～4 is very high, comparative example 1 casting matrix is opaque.
Claims (10)
1. the preparation method of a transparent thixotroping unsaturated polyester resin comprises the steps:
(1) in container, adds dibasic alcohol, monounsaturated dicarboxylic acid or acid anhydrides and unsaturated dibasic acid or acid anhydrides, through the polycondensation dehydration reaction, obtain Resin A;
(2) in Resin A, add acrylate or methacrylic ester cross-linking monomer;
(3) mix after, add aerosil, carry out high speed dispersion.
2. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 1, it is characterized in that: the add-on of described acrylate or methacrylic ester cross-linking monomer is 25～50% of Resin A total mass.
3. the preparation method of a transparent thixotroping unsaturated polyester resin comprises the steps:
(1) in container, adds dibasic alcohol, monounsaturated dicarboxylic acid or acid anhydrides and unsaturated dibasic acid or acid anhydrides, through the polycondensation dehydration reaction, obtain Resin A;
(2) in Resin A, add vinylbenzene, and acrylate or methacrylic ester cross-linking monomer;
(3) mix after, add aerosil, carry out high speed dispersion.
4. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 3, it is characterized in that: the add-on sum of described cinnamic add-on and acrylate or methacrylic ester cross-linking monomer is 25～50% of Resin A total mass, and the add-on of described acrylate or methacrylic ester cross-linking monomer is more than or equal to 5% of Resin A total mass.
5. according to the preparation method of the described transparent thixotroping unsaturated polyester resin of one of claim 1 to 4, it is characterized in that: described acrylate or methacrylic ester cross-linking monomer are one or more in Hydroxyethyl acrylate, Propylene glycol monoacrylate, butyl acrylate, diacrylate propylene diester, three vinylformic acid Ji Wusi esters, diacrylate-Isosorbide-5-Nitrae-Ding diester, hydroxyethyl methylacrylate, methyl methacrylate, the Ethylene-glycol-dimethacrylate.
6. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 5, it is characterized in that: the add-on of described aerosil is 0.5～2.0% of Resin A total mass.
7. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 6, it is characterized in that: in the described step (1), be warming up to 190～220 ℃ and carry out the polycondensation dehydration reaction, react to acid number and be less than or equal to 30mgKOH/g; Be cooled to 130～180 ℃ in the described step (2), adding quality is the Resorcinol of 100 ~ 300ppm of Resin A total mass; The high speed dispersion time in the described step (3) is 0.5～1.0h.
8. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 7, it is characterized in that: described dibasic alcohol is one or more in ethylene glycol, propylene glycol, glycol ether, dipropylene glycol, the neopentyl glycol.
9. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 7, it is characterized in that: described monounsaturated dicarboxylic acid or acid anhydrides are one or more in Tetra hydro Phthalic anhydride, m-phthalic acid, terephthalic acid, the tetrahydrophthalic anhydride.
10. according to the preparation method of transparent thixotroping unsaturated polyester resin claimed in claim 7, it is characterized in that: described unsaturated dibasic acid or acid anhydrides are one or both in MALEIC ANHYDRIDE, the FUMARIC ACID TECH GRADE.
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Cited By (6)
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| CN105968334A (en) * | 2016-05-17 | 2016-09-28 | 江苏博砚电子科技有限公司 | Polyfunctional light-cured resin for color photoresistance and preparation method thereof |
| CN107254241A (en) * | 2017-07-07 | 2017-10-17 | 江苏龙海建工集团有限公司 | A kind of preparation method of interior wall coating |
| CN108488544A (en) * | 2018-04-08 | 2018-09-04 | 吴亚琴 | A kind of preparation method of resistance to thorn vacuum heat-insulating plate |
| CN108503756A (en) * | 2017-02-28 | 2018-09-07 | 常州华科聚合物股份有限公司 | Vinyl monomer modified polyester resin, shrinking agent and preparation method |
| CN109776777A (en) * | 2018-12-25 | 2019-05-21 | 武汉深蓝海工新型材料科技有限责任公司 | A kind of unsaturated polyester (UP) synthetic method for tubular molding compound |
| CN110591010A (en) * | 2019-08-28 | 2019-12-20 | 广东晨宝复合材料有限公司 | Water-resistant styrene-free artificial stone resin and preparation method thereof |
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| US20040010061A1 (en) * | 2002-05-20 | 2004-01-15 | Hewitt John C. | Styrene-free unsaturated polyester resin compositions |
| CN101613442A (en) * | 2009-07-21 | 2009-12-30 | 常州市华润复合材料有限公司 | A kind of suitable large glass steel construction layer is with hanging down volatilization unsaturated polyester resin and method for making thereof |
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Cited By (9)
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| CN105968334A (en) * | 2016-05-17 | 2016-09-28 | 江苏博砚电子科技有限公司 | Polyfunctional light-cured resin for color photoresistance and preparation method thereof |
| CN105968334B (en) * | 2016-05-17 | 2018-05-22 | 江苏博砚电子科技有限公司 | It is a kind of for polyfunctionality light-cured resin of chromatic photoresist and preparation method thereof |
| CN108503756A (en) * | 2017-02-28 | 2018-09-07 | 常州华科聚合物股份有限公司 | Vinyl monomer modified polyester resin, shrinking agent and preparation method |
| CN108503756B (en) * | 2017-02-28 | 2020-12-18 | 常州华科聚合物股份有限公司 | Vinyl monomer modified polyester resin, low shrinkage agent and preparation method |
| CN107254241A (en) * | 2017-07-07 | 2017-10-17 | 江苏龙海建工集团有限公司 | A kind of preparation method of interior wall coating |
| CN108488544A (en) * | 2018-04-08 | 2018-09-04 | 吴亚琴 | A kind of preparation method of resistance to thorn vacuum heat-insulating plate |
| CN109776777A (en) * | 2018-12-25 | 2019-05-21 | 武汉深蓝海工新型材料科技有限责任公司 | A kind of unsaturated polyester (UP) synthetic method for tubular molding compound |
| CN110591010A (en) * | 2019-08-28 | 2019-12-20 | 广东晨宝复合材料有限公司 | Water-resistant styrene-free artificial stone resin and preparation method thereof |
| CN110591010B (en) * | 2019-08-28 | 2022-03-15 | 广东晨宝复合材料有限公司 | Water-resistant styrene-free artificial stone resin and preparation method thereof |
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