阅读说明：本技术 一种环保型高耐久性环氧改性腻子 (Environment-friendly high-durability epoxy modified putty ) 是由 刘宇 叶林宏 于 2019-11-04 设计创作，主要内容包括：本发明提供了一种环保型高耐久性环氧改性腻子,属于建筑材料技术领域。本发明腻子由甲、乙两种组分组成,甲组分包含环氧树脂、羰基化合物、缩水甘油醚类化合物、界面剂和功能性填料,乙组分包含胺类固化剂、固化促进剂和潮湿环境功能固化剂。本发明腻子将羰基化合物和缩水甘油醚类化合物复配作为稀释剂,能够协同提高腻子层的刚度、柔韧性、粘接强度、耐久性和稀释性能,降低腻子层收缩率和成本,有利于环保和安全；通过加入潮湿环境功能固化剂来保证在潮湿环境下依然可以顺利固化,施工适用性更强。(The invention provides an environment-friendly high-durability epoxy modified putty, and belongs to the technical field of building materials. The putty consists of a component A and a component B, wherein the component A comprises epoxy resin, a carbonyl compound, a glycidyl ether compound, an interface agent and a functional filler, and the component B comprises an amine curing agent, a curing accelerator and a humid environment functional curing agent. According to the putty, the carbonyl compound and the glycidyl ether compound are compounded to be used as the diluent, so that the rigidity, flexibility, bonding strength, durability and diluting performance of the putty layer can be synergistically improved, the shrinkage rate and cost of the putty layer are reduced, and the putty is beneficial to environmental protection and safety; the curing agent with the function of moist environment is added to ensure that the curing agent can be cured smoothly in moist environment, so that the construction applicability is stronger.)

1. The environment-friendly high-durability epoxy modified putty is characterized by comprising a component A and a component B, wherein the weight ratio of the component A to the component B is 100: 2-25; the component A comprises the following components in parts by weight:

the component B comprises the following components in parts by weight:

10-50 parts of amine curing agent,

0-30 parts of a humid environment functional curing agent,

1-15 parts of a curing accelerator;

wherein the reactive diluent comprises an infiltration solidification type reactive diluent and a toughening reactive diluent; the infiltration solidification type reactive diluent is a carbonyl compound, and the toughening reactive diluent is a glycidyl ether compound.

2. The putty as set forth in claim 1, wherein: the infiltration solidification type reactive diluent comprises a ketone compound and an aldehyde compound.

3. The putty as set forth in claim 2, wherein: the molar ratio of the aldehyde compound to the ketone compound is that the ketone compound: the aldehyde compound is 0.7-1.3: 1.

4. The putty as set forth in claim 2, wherein: the ketone compound comprises at least one of acetone, acetophenone, butanone, methyl isobutyl ketone, isophorone, diacetone alcohol, cyclohexanone, cycloheptanone, 2-pentanone, 3-pentanone, 2-hexanone, 2-heptanone, 3-heptanone, 4-heptanone, 2-octanone, 3-octanone and 2-nonanone; the aldehyde compound comprises at least one of furan formaldehyde, benzaldehyde, phenylacetaldehyde, n-hexanal, n-heptanal, n-octanal, cinnamaldehyde and citral.

5. The putty as set forth in claim 1, wherein: the glycidyl ether compound comprises at least one of allyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether and benzyl glycidyl ether.

6. The putty as set forth in claim 1, wherein: in the component B, 5-30 parts by weight of the humid environment functional curing agent is added; the humid environment functional curing agent comprises at least one of Mannich addition modified amine, isocyanate, ketimine and polythiol.

7. The putty as set forth in claim 1, wherein: the epoxy resin comprises at least one of bisphenol A type epoxy resin and bisphenol F type epoxy resin.

8. The putty as set forth in claim 1, wherein: the interface agent comprises at least one of silane coupling agent and titanate coupling agent.

9. The putty as set forth in claim 1, wherein: the amine curing agent comprises at least one of aliphatic amine, alicyclic amine, aromatic amine, modified polyamine and polyamide, and the curing accelerator comprises at least one of triethanolamine, tetramethylguanidine, benzyldimethylamine, piperidine, N' -dimethylpiperazine, 2- (dimethylaminomethyl) phenol, 2,4, 6-tris (dimethylamino) phenol (namely DMP-30), triphenylphosphine, 2-methylimidazole, 2-phenylimidazole and bicyclic amidine.

10. The putty as set forth in claim 1, wherein: the functional filler comprises at least one of thixotropic agent, thickening agent, preservative, pigment and extender filler.

Technical Field

The invention belongs to the technical field of building materials, and relates to environment-friendly high-durability epoxy modified putty.

Background

Due to the advantages of unique mechanical property, waterproof and anticorrosive properties and the like, the epoxy resin can be used for preparing the putty material with excellent performance. The epoxy putty materials commonly used at present comprise water-based epoxy putty and solvent-based epoxy putty.

The water-based epoxy putty is prepared from water-based epoxy resin, a curing agent and a filler, such as CN105623347A, CN102337050A and CN 101412862A. The water-based epoxy putty is generally composed of three components, the preparation method is complex, water, partial filler and auxiliary agent are uniformly mixed, and the water-based epoxy putty is finally prepared by adding the water-based epoxy resin emulsion and the curing agent. The application of the water-based epoxy putty is limited to a certain extent due to the defects of uneven particle size of epoxy resin emulsion, poor storage stability, complex field preparation, easy influence of environmental temperature on material curing, poor water resistance and corrosion resistance of the cured material and the like.

The solvent-based epoxy putty is generally a two-component product, wherein the component A is composed of epoxy resin, a diluent, a filler and an auxiliary agent, and the component B is composed of a curing agent, such as CN 102876191A. The solvent type epoxy putty material is generally prepared from an inactive diluent, so that the problem of environmental pollution caused by solvent volatilization exists, and the problems of large material shrinkage, pores or defects in the structure and the like easily caused by the solvent in the volatilization process are solved, so that the problem of poor mechanical property of the cured material is caused. In addition, the solvent type epoxy putty is mostly applied to building interior and exterior walls or floor materials at present, and from the aspect of application, epoxy putty materials with excellent performance for repairing pits or defects of building structures are lacked. The solvent type epoxy putty used for the inner and outer walls of the building at present is flexible putty prepared by blending epoxy resin and polyurethane, has the characteristic of good flexibility, is beneficial to preventing cracking in the using process, is easily influenced by the environmental humidity in the using process, is extremely easily influenced and reduced in curing performance in a humid or water environment, and is also low in rigidity and bonding performance.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the environment-friendly high-durability epoxy modified putty, so that the rigidity, flexibility, bonding strength, durability and dilution performance of the material are improved, the shrinkage rate and cost of the material are reduced, the environment protection and safety are facilitated, and the curing performance of the epoxy putty in a humid environment can be ensured.

In order to achieve the purpose, the invention adopts the technical scheme that: an environment-friendly high-durability epoxy modified putty consists of a component A and a component B, wherein the weight ratio of the component A to the component B is 100: 2-25; the component A comprises the following components in parts by weight:

the component B comprises the following components in parts by weight:

10-50 parts of amine curing agent,

0-30 parts of a humid environment functional curing agent,

1-15 parts of a curing accelerator;

wherein the reactive diluent comprises an infiltration solidification type reactive diluent and a toughening reactive diluent; the infiltration solidification type reactive diluent is a carbonyl compound, and the toughening reactive diluent is a glycidyl ether compound. The carbonyl compound can improve the rigidity of the putty layer, improve the bonding property between the putty layer and a base surface, improve the dilutability of the putty material and reduce the cost; the glycidyl ether compound can improve the content of epoxy groups on the basis of reducing viscosity, and improve the flexibility and the abrasion resistance of the putty layer, so that the durability of the putty layer is improved, and the environmental protection property of the putty material is also improved; the carbonyl compound and the glycidyl ether compound are compounded to be used as a diluent, so that the rigidity, flexibility, bonding strength, durability and diluting performance of the putty layer can be synergistically improved, the shrinkage rate and cost of the putty layer are reduced, and the environment-friendly and safe putty layer is facilitated. The humidity of the air in a humid environment is high, such as a hydraulic environment or a tunnel environment, and the curing of micromolecular amines is seriously influenced, so that the curing of epoxy putty is delayed or the reaction efficiency is reduced, the final strength of the putty layer is possibly reduced, and the putty can be still smoothly cured by adopting a humid environment functional curing agent under the condition of extremely high humidity, so that the strength of the putty layer is ensured.

In a preferred embodiment of the putty of the present invention, the infiltration consolidation reactive diluent comprises a ketone compound and an aldehyde compound. The ketone compound and the aldehyde compound are micromolecular diluents, and can react to form a solidification body under the action of a curing agent, so that the conversion from an inactive diluent to an active diluent is realized, the mechanical property and the rigidity of a product can be synergistically improved, the diluting capacity of a system is enhanced, the product cost is reduced, in addition, the migration of the micromolecular active diluents in the construction process can play a role in infiltration solidification enhancement, and the micromolecular active diluents can be tightly combined with an interface agent and a concrete base surface to improve the bonding strength of the putty material on the concrete base surface, and further improve the durability of the putty material.

In a further preferred embodiment of the putty of the present invention, the molar ratio of the ketone compound to the aldehyde compound is a ratio of the ketone compound: the aldehyde compound is 0.7-1.3: 1. The putty material obtained under the condition has better mechanical property, rigidity, bonding strength and other properties.

As a preferred embodiment of the putty according to the invention, the ketone compound comprises at least one of acetone, acetophenone, butanone, methyl isobutyl ketone, isophorone, diacetone alcohol, cyclohexanone, cycloheptanone, 2-pentanone, 3-pentanone, 2-hexanone, 2-heptanone, 3-heptanone, 4-heptanone, 2-octanone, 3-octanone and 2-nonanone.

As a more preferable embodiment of the putty of the invention, the ketone compound is at least one of cyclohexanone, cycloheptanone, 2-heptanone, 4-heptanone, 2-octanone, 2-nonanone and diacetone alcohol. The ketone compounds with low toxicity and high flash point, such as cyclohexanone, cycloheptanone, 2-heptanone, 4-heptanone, 2-octanone, 2-nonanone, diacetone alcohol and the like, can avoid potential safety hazards in the construction process and are more environment-friendly.

As a preferred embodiment of the putty of the present invention, the aldehyde compound includes at least one of furfural, benzaldehyde, phenylacetaldehyde, n-hexanal, n-heptanal, n-octanal, cinnamaldehyde, and citral.

In a more preferred embodiment of the putty of the present invention, the aldehyde compound is at least one of benzaldehyde, phenylacetaldehyde, n-octylaldehyde, citral, and cinnamaldehyde. The aldehyde compounds with low toxicity and high flash points, such as benzaldehyde, phenylacetaldehyde, n-octyl aldehyde, citral, cinnamaldehyde and the like, can avoid potential safety hazards in the construction process and are more environment-friendly.

As a preferable embodiment of the putty of the present invention, the glycidyl ether compound includes at least one of allyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether and benzyl glycidyl ether.

As a preferable embodiment of the putty, in the component B, the moisture environment function curing agent accounts for 5-30 parts by weight.

As a preferred embodiment of the putty according to the invention, the humid environment functional curing agent comprises at least one of Mannich addition modified amine, isocyanate, ketimine and polythiol.

In a preferred embodiment of the putty according to the invention, the epoxy resin is at least one of bisphenol a epoxy resin and bisphenol F epoxy resin.

As a more preferable embodiment of the putty of the present invention, the epoxy resin is at least one of E44 and E51.

As a preferred embodiment of the putty of the invention, the interface agent comprises at least one of a silane coupling agent and a titanate coupling agent.

In a preferred embodiment of the putty according to the invention, the amine curing agent comprises at least one of aliphatic amine, alicyclic amine, aromatic amine, modified polyamine and polyamide. Wherein the modified polyamine comprises chemically modified aliphatic amine, chemically modified alicyclic amine, chemically modified aromatic amine and other chemically modified amines. As a more preferred embodiment of the putty of the present invention, the amine-based curing agent includes at least one of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, diethylaminopropylamine, 590, 593, 650, 651, 810, and 910. Wherein 590, 593, 810 and 910 are modified polyamine curing agents; 650 and 651 are polyamide-based curing agents.

As a preferred embodiment of the putty according to the invention, the curing accelerator comprises at least one of triethanolamine, tetramethylguanidine, benzyldimethylamine, piperidine, N' -dimethylpiperazine, 2- (dimethylaminomethyl) phenol, 2,4, 6-tris (dimethylamino) phenol (i.e., DMP-30), triphenylphosphine, 2-methylimidazole, 2-phenylimidazole, and bicyclic amidine.

As a preferred embodiment of the putty according to the present invention, the functional filler includes at least one of thixotropic agents, thickeners, preservatives, pigments, extender fillers. The filler can be at least one of quartz powder, talcum powder, mica iron oxide, titanium dioxide, mica powder, gypsum powder, etc.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) according to the putty, the carbonyl compound and the glycidyl ether compound are compounded to be used as the diluent, so that the rigidity, flexibility, bonding strength, durability and diluting performance of the putty layer can be synergistically improved, the shrinkage rate and cost of the putty layer are reduced, and the putty is beneficial to environmental protection and safety.

(2) The putty provided by the invention can be successfully cured in a humid environment by adding the humid environment functional curing agent, and the construction applicability is stronger.

(3) The putty has excellent waterproof and anticorrosive performance, excellent flexibility, excellent adhesion performance to concrete base materials, excellent plastering performance and excellent polishing performance, can be formed at one time, and can be polished manually to enable the surface of the concrete base surface to be flat no matter on a plane, a vertical surface or even a top surface.

(4) The putty can be used for repairing concrete surface pits, and can be used as a waterproof and anticorrosive layer of a concrete structure and a waterproof, anticorrosive and anti-cracking putty layer of an inner wall and an outer wall.

Detailed Description

To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.