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Amino polyether organic silicon hybrid curing agent for epoxy floor coating

A technology of amino polyether and curing agent, which is applied in the field of building materials, and can solve the problem that the hardness, wear resistance, and impact resistance of epoxy floor coatings are difficult to achieve at the same time, and cannot reflect or reflect the excellent performance of amino silicone oil and low temperature flexibility. In order to achieve the effect of good hardness, convenient implementation and improved impact resistance

Inactive Publication Date: 2013-08-07
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness, wear resistance and impact resistance of epoxy floor coatings cured by these curing agents are difficult to meet people's requirements at the same time.
Amino silicone oil contains amino groups that can react with the epoxy groups of epoxy resins, and has Si-O-Si chains with low temperature flexibility, low surface energy, heat resistance, weather resistance, hydrophobicity, excellent electrical properties and flame retardancy. Therefore, it can be used as a high-performance epoxy resin curing agent. However, the current amino silicone oil curing agent products have the disadvantage of poor compatibility with epoxy resins, resulting in that the amino groups of amino silicone oils can hardly participate in curing, thus failing to reflect or reflect the amino groups. Excellent performance of silicone oil

Method used

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  • Amino polyether organic silicon hybrid curing agent for epoxy floor coating
  • Amino polyether organic silicon hybrid curing agent for epoxy floor coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Mix 100g of diphenyldimethoxysilane, 100g of γ-aminopropyltriethoxysilane (KH-550), 200g of ethanol, 40g of deionized water, and 3g of stannous octoate evenly at 78°C Hydrolysis polycondensation reaction 6 hours, then add 40g polyethylene glycol (molecular weight is 600), 40g ethanol and 0.8g stannous octoate condensation reaction 6h at 78 ℃, decompression distillation removes the small molecular substances such as ethanol and deionized water, namely Amino polyether silicone hybrid curing agent.

[0041] (2) Bisphenol A type epoxy resin E-44 100g, polysiloxane defoamer BYK066 (produced by German BYK company) 3g, C12-C14 alcohol glycidyl ether 10g, leveling agent EFKA37771.5g, dispersant BYK-P105 (produced by German BYK company) 4g, carbon black 6g, talcum powder 100g, mix evenly with a strong mixer; then add the curing agent synthesized in step (1) 15g, triethylenetetramine 5g, mix evenly with a strong mixer , That is, epoxy floor coatings. Measure the hardness ac...

Embodiment 2

[0045] (1) Mix 65g of diphenylsilanediol, 35g of n-propyltriethoxysilane, 50g of γ-aminopropyltrimethoxysilane (A-1110), 80g of tetrahydrofuran, 10g of deionized water and 0.5g of dilauric acid After dibutyltin is mixed evenly, hydrolyze and polycondense at 50°C for 10 hours, then add 200g of monomethoxy-terminated hydroxyl polyether (molecular weight is 4000, and the mass ratio of ethylene oxide to propylene oxide structural units in the molecule is 3 / 2 ), 200g of tetrahydrofuran and 1.2g of dibutyltin dilaurate were mixed uniformly and then condensed and reacted at 50°C for 10 hours, and small molecular substances such as tetrahydrofuran and deionized water were removed by distillation under reduced pressure to obtain the amino polyether silicone hybrid curing agent.

[0046] (2) Bisphenol A type epoxy resin E-51100g, polysiloxane defoamer BYK066 (produced by German BYK company) 1.2g, cyclohexanone 10g, butyl acetate 10g, leveling agent EFKA37770.8g, Dispersant BYK163 (produ...

Embodiment 3

[0048] (1) Mix 35g of diphenylsilanediol, 65g of n-propyltrimethoxysilane, 150g of γ-aminopropyltrimethoxysilane (A-1110), 250g of dioxane, 45g of deionized water and 2g of dilaurel Dibutyltin dibutyltin was mixed evenly, and then hydrolyzed and polycondensed at 100°C for 2 hours, then added 250g of monomethoxy-terminated hydroxyl polyether (molecular weight was 2000, and the mass ratio of ethylene oxide to propylene oxide structural units in the molecule was 2 / 1), 250g of dioxane and 2.5g of dibutyltin diacetate were condensed and reacted at 100°C for 2 hours, and small molecular substances such as dioxane and deionized water were removed by vacuum distillation to obtain amino polyether Silicone hybrid curing agent.

[0049] (2) With 100g of novolac epoxy resin, polysiloxane defoamer BYK0661.6g, 20g of propylene oxide butyl ether, 1g of leveling agent EFKA3777, 0.1g of dispersant BYK-P104 (produced by BYK Company in Germany), Titanium dioxide 16g, kaolin 40g, mix homogeneou...

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Abstract

The invention belongs to the field of building materials, and discloses an amino polyether organic silicon hybrid curing agent for an epoxy floor coating and an epoxy floor coating prepared by taking the amino polyether organic silicon hybrid curing agent as a raw material. A preparation method of the curing agent comprises the following steps of: uniformly mixing 10 parts by mass of an organic silicon monomer, 20-200 parts by mass of an amino silane coupling agent, 50-300 parts by mass of an organic solvent, 5-60 parts by mass of deionized water and 0-3 parts by mass of a catalyst; performing hydrolytic polycondensation at the temperature of 50-100 DEG C for 2-10 hours; adding 40-250 parts by mass of polyether, 40-250 parts by mass of an organic solvent and 0.5-2.5 parts by mass of a catalyst and uniformly mixing; continually reacting for 2-10 hours; and removing the organic solvent and water. Compared with the conventional epoxy curing agent, the curing agent has the advantages that: a good toughening action is achieved, the impaction resistance of the epoxy floor coating is improved, and the prepared epoxy floor coating has high hardness, high abrasion resistance, high heat resistance, a simple process and high practicability.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an amino polyether organic silicon hybrid curing agent for epoxy floor coatings and epoxy floor coatings prepared from the epoxy floor coatings, and also includes a preparation method for the two. Background technique [0002] Floor coatings have gradually been recognized and accepted by the majority of users, and are being widely used in industrial and civil buildings and facilities such as industrial plants, corridors, parking lots, hospitals, basements, sports fields, and apartments. According to the classification of film-forming substances, floor coatings include several series of products such as inorganic, epoxy, polyurethane, epoxy phenolic, polyurea, acrylic, and chlorinated polyolefin. Each floor coating has its advantages and disadvantages. Among them, epoxy floor coating is a kind of high-strength, wear-resistant and beautiful floor, which has the advant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/48C09D163/02C09D163/04C09D7/12
Inventor 刘伟区马松琪罗广建王红蕾陈海生
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI