CN110563928A - Transparent paste crack beautifying agent curing agent and preparation method thereof - Google Patents
Transparent paste crack beautifying agent curing agent and preparation method thereof Download PDFInfo
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- CN110563928A CN110563928A CN201910961065.5A CN201910961065A CN110563928A CN 110563928 A CN110563928 A CN 110563928A CN 201910961065 A CN201910961065 A CN 201910961065A CN 110563928 A CN110563928 A CN 110563928A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/504—Amines containing an atom other than nitrogen belonging to the amine group, carbon and hydrogen
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention relates to a transparent paste crack beautifying agent curing agent and a preparation method thereof.A material B curing agent component adopts a dactylamine curing agent 1.3 cyclohexyldimethylamine for modification reaction, so that the number of active bonds contained in the curing agent is reduced, the reaction activity of the curing agent is reduced, the curing speed is controlled, and the fog surface on the surface of a cured product is eliminated. Epoxy resin is used as a chain extender of the curing agent, the compatibility between the curing agent and the resin is improved, and D400 polyether amine, D2000 polyether amine and T5000 polyether amine are mixed with the epoxy resin under certain operating conditions for modification, so that the raw material of the crack sealing agent which is moderate in viscosity, good in weather resistance, good in water resistance, high in curing speed, high in glossiness and moderate in rigidity and flexibility is obtained.
Description
Technical Field
The invention relates to the field of epoxy resin, in particular to a preparation method of a 2:1 transparent paste epoxy crack sealer curing agent.
background
The epoxy resin is a base resin with wide application, and is matched with curing agents with different properties to generate cured materials with different properties. The epoxy crack sealer is an indispensable ceramic tile decoration product in the current decoration, can endow ceramic tiles with rich colors, smoothness like porcelain, no mildew, difficult discoloration and no dirt hiding, has practical and aesthetic functions, and also brings a more beautiful decoration effect to the ceramic tiles, so that the integral decoration is more exquisite and beautiful, grand and elegant or graceful and elegant. The common matrix of the seam beautifying agent is epoxy resin, the epoxy resin is mixed with a curing agent, and then pearl powder is added to obtain solid seam beautifying agents with various colors and styles, one complete seam beautifying agent is divided into two components of A (epoxy resin) and B (curing agent), and AB materials are pushed out by a glue gun during construction and filled into gaps through a mixing tube to complete seam filling and curing. The crack sealer has the advantages that the performance of the crack sealer is determined by the component of the B-material curing agent, the heat resistance, chemical resistance, weather resistance, mechanical strength, adhesive force and other properties of products cured by different curing agents are completely different, and the yellowing resistance, curing speed, sagging prevention, moisture resistance, surface effect and adhesive force of the crack sealer are important factors of the performance of the crack sealer.
The basic situation of the seam beautifying agent on the market today is as follows:
The formula of the resin curing agent 1 is 1:1, and a large amount of auxiliary materials such as benzyl alcohol, nonyl phenol, dodecyl phenol, acetone, toluene, xylene and the like are added into the component B to serve as a filling body, so that the material cost is reduced.
The existing double-component epoxy crack sealer has the following defects:
The crack beautifying agent containing benzyl alcohol, nonyl phenol, dodecyl phenol, acetone, toluene and xylene is not the optimal choice in environmental protection.
② the crack beautifying agent containing benzyl alcohol, nonyl phenol and dodecyl phenol leads the condensate to be easier to yellow.
③ the solid content of the seam beautifying agent containing benzyl alcohol, nonyl phenol, dodecyl phenol, acetone, toluene and dimethylbenzene is diluted, the volatility is higher, the shrinkage rate is higher, and the falling-off problem is easy to generate after a long time!
Fourthly, the existing crack sealer curing agent part basically contains 30 to 50 percent of benzyl alcohol, nonyl phenol and dodecyl phenol which are used as fillers, so that the bonding performance of the crack sealer is greatly reduced, and the crack sealer is one of important reasons that the crack sealer is easy to fall off after being cured.
The part of the curing agent contains a large amount of benzyl alcohol, nonyl phenol and dodecyl phenol, so that the cured product has insufficient mechanical strength, poor wear resistance and low viscosity and is one of the reasons for easy falling off.
The formula is a 2-to-1 crack sealer formula, has the problem of higher brittleness, does not meet the requirements of crack sealing construction and ceramic tile expansion with heat and contraction with cold, and therefore toughness treatment needs to be carried out on curing, so that the hardness of a cured product can be both good.
Disclosure of Invention
The invention provides a transparent paste crack beautifying agent curing agent with a new formula, a new proportion and excellent performance and a preparation method thereof, and solves the problems existing in the use process in the prior art.
A transparent paste crack beautifying agent curing agent is characterized in that: the epoxy resin-modified epoxy resin composite material comprises a component A and a component B, wherein the component A adopts epoxy resin which is taken as a chain extender of a curing agent, and the component B adopts a dactylamine curing agent 1.3 cyclohexyldimethylamine for modification reaction.
Preferably, the epoxy resin is subjected to mixing modification by adding the following materials: d400 polyetheramine, D2000 polyetheramine, T5000 polyetheramine. ,.
Preferably, the component A and the component B are 2:1
A preparation method of a transparent paste crack beautifying agent curing agent is characterized by comprising the following steps:
Adding 10-40 parts of 1.3 cyclohexanediamine curing agent into a reaction kettle, slowly stirring the reaction kettle, simultaneously adding 5-20 parts of T5000 polyetheramine, 5-20 parts of D2000 polyetheramine and 5-20 parts of D400 polyetheramine, dispersing and stirring the reaction kettle, slowly adding 5-20 parts of 4080E hydrogenated epoxy resin, continuously stirring, then adding 5-30 parts of electronic grade 128 epoxy resin, simultaneously slowly adding 5-20 parts of carbon 12-14 alkyl glycidyl ether, stirring and dispersing for 1-3 hours at the speed of 400-700 revolutions after the dripping is finished, standing for 8-12 hours, adding 1-3 thousandths of ultraviolet absorbent, 1-3 thousandths of light stabilizer, adding 3-5% of fumed silica sio2, dispersing for 8-15 minutes at the speed of 1000-1300 revolutions, and raising the temperature to 45-55 ℃, adding 6-8 per mill of flow stopping agent, re-dispersing for 10 minutes, and vacuumizing for 15 minutes to obtain a transparent crack beautifying agent paste curing agent.
The scheme solves the defect that the epoxy seam beautifying agent is easy to yellow. Solves the problem that the epoxy crack sealer has poor adhesive force and is easy to fall off.
The problem that the 1:1 seam beautifying agent contains a large amount of volatile fillers, so that the seam beautifying agent is easy to fall off due to large shrinkage is solved.
Preferably, T5000 polyetheramine: d2000 polyetheramine: the addition ratio of the D400 polyether amine is as follows: 1:1:2.
Preferably, the 4080E hydrogenated epoxy resin is added in an amount of 10 parts, the electronic grade 128 epoxy resin is added in an amount of 10 parts, and the C12-14 alkyl glycidyl ether is added in an amount of 10 parts.
preferably, the addition amount of the ultraviolet absorber is 2 per mill, the addition amount of the light stabilizer is 2 per mill, and the addition amount of the fumed silica sio2 is 5 percent.
In the invention, the component B of the curing agent adopts the ring amine curing agent 1.3 cyclohexyldimethylamine for modification reaction, thereby reducing the number of active bonds, reducing the reactivity of the curing agent, controlling the curing speed and eliminating the fog surface on the surface of the cured product. Epoxy resin is used as a chain extender of the curing agent, the compatibility between the curing agent and the resin is improved, and D400 polyether amine, D2000 polyether amine and T5000 polyether amine are mixed with the epoxy resin under certain operating conditions for modification, so that the raw material of the crack sealing agent which is moderate in viscosity, good in weather resistance, good in water resistance, high in curing speed, high in glossiness and moderate in rigidity and flexibility is obtained.
In conclusion, the beneficial effects of the invention are as follows:
the formula does not contain benzyl alcohol, nonyl phenol, dodecyl phenol, acetone, toluene and xylene, belongs to a solvent-free formula, and meets the requirement of environmental protection.
② the yellowing resistance of the product without micromolecule benzyl alcohol, nonyl phenol and dodecyl phenol is greatly improved.
The formula belongs to a solvent-free process, does not contain volatile substances, has high solid content, reduces the shrinkage rate after curing, prevents the crack beautifying agent from shrinking in the crack, and prolongs the service life of the crack beautifying agent.
And fourthly, the bonding force is enhanced, the method is very important for the seam beautifying industry of the ceramic tile, and the problem that the seam beautifying is easy to fall off is solved.
the hard board has toughness, thereby meeting the wear-resistant requirement and also meeting the expansion and contraction requirements of expansion with heat and contraction with cold.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention discloses a preparation method of a transparent paste crack beautifying agent curing agent, which comprises the following specific steps:
Adding 10-40 parts of 1.3 cyclohexanediamine curing agent into a reaction kettle, slowly stirring the reaction kettle, simultaneously adding 5-20 parts of T5000 polyetheramine, 5-20 parts of D2000 polyetheramine and 5-20 parts of D400 polyetheramine, dispersing and stirring the reaction kettle, slowly adding 5-20 parts of 4080E hydrogenated epoxy resin, continuously stirring, then adding 5-30 parts of electronic grade 128 epoxy resin, simultaneously slowly adding 5-20 parts of carbon 12-14 alkyl glycidyl ether, stirring and dispersing for 1-3 hours at the speed of 400-700 revolutions after the dripping is finished, standing for 8-12 hours, adding 1-3 thousandths of ultraviolet absorbent, 1-3 thousandths of light stabilizer, adding 3-5% of fumed silica sio2, dispersing for 8-15 minutes at the speed of 1000-1300 revolutions, and raising the temperature to 45-55 ℃, adding 6-8 per mill of flow stopping agent, re-dispersing for 10 minutes, and vacuumizing for 15 minutes to obtain a transparent crack beautifying agent paste curing agent.
Example 2
the curing agent comprises the following components: adding 30 parts of 1.3 cyclohexane dimethylamine curing agent into a reaction kettle, slowly stirring the reaction kettle at the speed of 200 revolutions, simultaneously adding 10 parts of T5000 polyetheramine, 10 parts of D2000 polyetheramine and 20 parts of D400 polyetheramine, slowly dispersing and stirring the reaction kettle at the speed of 300 revolutions, then slowly adding 10 parts of 4080E hydrogenated epoxy resin, continuously stirring, then adding 10 parts of electronic grade 128 epoxy resin, simultaneously slowly adding 10 parts of C12-14 alkyl glycidyl ether, stirring and dispersing at the speed of 600 revolutions for 2 hours after the dripping is finished, standing for 10 hours, adding 2 thousandths of ultraviolet absorbent and 2 thousandths of light stabilizer, adding 5% of fumed silica sio2, dispersing at the speed of 1200 revolutions for 10 minutes, raising the temperature to 50 ℃, adding 8 thousandths of flow stopping agent, dispersing for 10 minutes, and vacuumizing for 15 minutes to obtain the 2 to 1 transparent sealant paste curing agent.
In the formula of the curing agent, 1.3-cyclohexanedimethylamine is a main curing agent, has the effect of accelerating low-temperature curing, and has good yellowing resistance, high hardness and high wear resistance. The T5000 polyetheramine, the D2000 polyetheramine, the D400 polyether curing agent play a role in regulating toughness, meanwhile, the adhesive force with a base material is enhanced, and the effect of reducing the curing reaction speed is also achieved, so that the construction operation at room temperature is more suitable, the 4080E hydrogenated epoxy resin is weather-resistant flexible resin, the defect of over rigidity of base resin is well overcome by using the resin for chain extension and addition, the weather resistance of the curing agent is improved by hydrogenation treatment, and the 2:1 transparent crack sealer paste curing agent is obtained by matching with an ultraviolet absorbent and a light stabilizer. ③ where 2:1 is based on weight as reference standard, and south Asia 128 resin as reference, 200 parts of resin, 100 parts of curing agent, and mixing through a 2:1 mixing tube to obtain the cured product.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A transparent paste crack beautifying agent curing agent is characterized in that: the epoxy resin-modified epoxy resin composite material comprises a component A and a component B, wherein the component A adopts epoxy resin which is taken as a chain extender of a curing agent, and the component B adopts a dactylamine curing agent 1.3 cyclohexyldimethylamine for modification reaction.
2. The transparent paste body crack sealer curing agent and the preparation method thereof according to claim 1, wherein the curing agent is characterized in that: the epoxy resin is mixed and modified, and the additives are as follows: d400 polyetheramine, D2000 polyetheramine, T5000 polyetheramine.
3. The transparent paste body crack sealer curing agent and the preparation method thereof according to claim 1, wherein the curing agent is characterized in that: the component A and the component B are 2: 1.
4. A preparation method of a transparent paste crack beautifying agent curing agent is characterized by comprising the following steps:
adding 10-40 parts of 1.3 cyclohexanediamine curing agent into a reaction kettle, slowly stirring the reaction kettle, simultaneously adding 5-20 parts of T5000 polyetheramine, 5-20 parts of D2000 polyetheramine and 5-20 parts of D400 polyetheramine, dispersing and stirring the reaction kettle, slowly adding 5-20 parts of 4080E hydrogenated epoxy resin, continuously stirring, then adding 5-30 parts of electronic grade 128 epoxy resin, simultaneously slowly adding 5-20 parts of carbon 12-14 alkyl glycidyl ether, stirring and dispersing for 1-3 hours at the speed of 400-700 revolutions after the dripping is finished, standing for 8-12 hours, adding 1-3 thousandths of ultraviolet absorbent, 1-3 thousandths of light stabilizer, adding 3-5% of fumed silica sio2, dispersing for 8-15 minutes at the speed of 1000-1300 revolutions, and raising the temperature to 45-55 ℃, adding 6-8 per mill of flow stopping agent, re-dispersing for 10 minutes, and vacuumizing for 15 minutes to obtain a transparent crack beautifying agent paste curing agent.
5. The method for preparing the transparent paste body crack sealer curing agent according to claim 4, wherein the method comprises the following steps: t5000 polyetheramine: d2000 polyetheramine: the addition ratio of the D400 polyether amine is as follows: 1:1:2.
6. The method for preparing the transparent paste body crack sealer curing agent according to claim 4 or 5, characterized in that: 4080E hydrogenated epoxy resin 10 parts, electronic grade 128 epoxy resin 10 parts, and C12-14 alkyl glycidyl ether 10 parts.
7. The method for preparing the transparent paste body crack sealer curing agent according to claim 6, wherein the method comprises the following steps: the addition of the ultraviolet absorbent is 2 per mill, the addition of the light stabilizer is 2 per mill, and the addition of the fumed silica sio2 is 5 percent.
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Cited By (3)
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| CN111534262A (en) * | 2020-06-01 | 2020-08-14 | 西卡(上海)管理有限公司 | Yellowing-resistant porcelain beautifying adhesive |
| CN111961191A (en) * | 2020-08-29 | 2020-11-20 | 江苏三木化工股份有限公司 | Epoxy curing agent for seaming and preparation method thereof |
| CN116285818A (en) * | 2023-04-13 | 2023-06-23 | 湖北三棵树新材料科技有限公司 | Joint beautifying curing agent capable of being constructed in winter and preparation method thereof |
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| CN111534262A (en) * | 2020-06-01 | 2020-08-14 | 西卡(上海)管理有限公司 | Yellowing-resistant porcelain beautifying adhesive |
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| CN116285818A (en) * | 2023-04-13 | 2023-06-23 | 湖北三棵树新材料科技有限公司 | Joint beautifying curing agent capable of being constructed in winter and preparation method thereof |
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Application publication date: 20191213 |