CN101705744A - Epoxy terrace material and preparation method thereof - Google Patents

Abstract

The invention discloses an epoxy floor material, comprising a polyurethane synthetic leather layer, a glass fiber cloth layer bonded to the polyurethane synthetic leather layer, and a floor coating layer formed by coating floor paint on the surface of the glass fiber cloth layer composition. The floor material of the present invention not only inherits the superior physical and chemical properties of epoxy resin, such as wear resistance, washing resistance, oil resistance, aging resistance, strong chemical resistance, and strong adhesion. By using glass fiber as the material skeleton, the impact resistance and tensile strength of the material are further enhanced. It is a high-strength composite material, which is more durable than traditional coating materials, has a longer service life than traditional coating floors, and is easier to install. construction.

Description

A kind of epoxy floor material and preparation method thereof

technical field

The invention relates to an industrial floor, in particular to an epoxy floor material and a preparation method thereof.

Background technique

The traditional epoxy resin industrial floor is a high-performance floor coating material for different purposes and loads. After the concrete floor protection period, it uses special machinery to remove the surface cement and form the necessary roughness, and relies on mechanical or manual coating. Oxygen resin industrial floor coatings are evenly spread on the surface and wait until it is completely cured, thus forming a seamless, dust-free, strong, highly wear-resistant, acid-alkali corrosion-resistant protective layer on the surface.

Epoxy resin industrial flooring has excellent properties such as wear resistance, heavy pressure resistance, dust resistance, waterproof, corrosion resistance, and anti-static performance. It is widely used in industrial plants, office buildings, underground parking garages, logistics warehouses, business centers, schools, and supermarkets. and other places.

However, the traditional epoxy resin industrial floor generally adopts the on-site coating process, which is cured at room temperature, and the curing construction period is long. The curing performance is unstable due to changes in environmental conditions such as temperature and humidity. High cross-linking density, large internal stress, brittleness, poor fatigue resistance, heat resistance, impact resistance and other deficiencies, resulting in easy peeling, short service life, difficult to meet the requirements of special engineering technology, making its application subject to certain limits.

In addition, most epoxy-curing systems used in traditional epoxy floor materials contain organic solvents such as toluene and acetone. These solvents will inevitably volatilize during the curing process of epoxy resin, causing serious indoor pollution.

Contents of the invention

The invention provides an epoxy floor material, which is directly laid on the ground surface, easy to install and construct, and solves the problems of long curing time and volatilization of harmful substances in the curing process of the traditional epoxy floor coating after on-site construction .

An epoxy floor material is composed of a polyurethane synthetic leather layer, a glass fiber cloth layer bonded to the polyurethane synthetic leather layer, and a floor paint layer formed by coating floor paint on the surface of the glass fiber cloth layer.

The polyurethane synthetic leather layer and the glass fiber cloth layer can be bonded by common adhesives, preferably by the floor paint that forms the above-mentioned floor paint layer.

The thickness of the polyurethane synthetic leather is preferably 0.5-1.0 mm, and the elastic modulus is preferably 200-300 kg/cm ² . If the modulus is lower than this range, the prepared floor material is prone to deformation, which is not conducive to laying on the ground evenly. If the modulus is higher than this range, the entire material will be harder, which is not conducive to material winding.

The thickness of the glass fiber cloth is 0.2-0.6 mm. If the thickness is less than this range, the strength of the material will be too low. If the thickness is greater than this range, the amount of glue absorbed will increase, and the material will be too hard to be conducive to laying.

The floor paint can be a conventional floor paint, preferably composed of component A and component B in a weight ratio of 10:5 to 10:3,

Wherein, the weight percent of A component consists of:

Epoxy resin 40～50%

Toughener 1～5%

Mineral filler 20～30%

Thinner 10～15%

Defoamer 0.1～0.5%

Leveling agent 0.1～0.5%

Anti-scratch agent 1～5%

Color paste 1～5%

Wherein, the weight percent of B component consists of:

Curing agent 80～90%

Curing accelerator 10-20%.

The epoxy resin is preferably at least one of resin E44 and resin E51. This type of epoxy resin has good bonding performance and low price, and the weight percentage is preferably 40-45%.

Described toughening agent is preferably at least one in the nitrile rubber with carboxyl end group, nitrile rubber and polyurethane modified epoxy resin, and this kind of flexible agent has good compatibility with epoxy resin, and the toughening effect is obvious , the weight percentage is preferably 3-5%.

The mineral filler is preferably at least one of talcum powder, quartz powder, and trifle powder, which can increase the compactness of the material, and the weight percentage is preferably 25-30%.

The diluent is preferably at least one of butyl glycidyl ether and monofunctional aromatic glycidyl ether. This type of diluent can reduce the viscosity of the resin system, and at the same time can participate in the curing reaction, is not easy to volatilize, and avoids environmental pollution, and the weight percentage is preferably 12-15%.

The leveling agent is preferably at least one of polyacrylate copolymer and polyether modified silicone oil. This type of leveling agent can increase the leveling property of the coating and facilitate the film formation of the coating. The weight percentage is preferably 0.3-0.5 %.

The defoamer is at least one of polyorganosiloxane and silicone, which can suppress foam, defoam and prevent shrinkage, and the weight percentage is preferably 0.3-0.5%.

The anti-scratch agent is at least one of polydimethylsiloxane and polyether-modified polydisiloxane, which increases the anti-scratch performance of the coating surface, and the weight percentage is preferably 2-5%.

The weight percentage of the color paste is preferably 2-5%.

The curing agent is preferably at least one of polyamide curing agent and modified alicyclic amine curing agent. This type of curing agent has fast curing speed, excellent curing performance and outstanding toughness. The weight percentage is preferably 85-90%.

The curing accelerator is preferably at least one of benzyldimethylamine and 2,4,6-tris(dimethylaminomethyl)phenol, which can rapidly accelerate the curing speed of the resin system, and the weight percentage is preferably 10 ~15%.

The present invention also provides a preparation method of the above-mentioned epoxy floor material, which includes the following steps: bonding and compounding polyurethane synthetic leather and glass fiber cloth, then coating the floor coating on the surface of the glass fiber cloth, and finally heating it at 90-120°C Bake for 15 to 20 minutes to prepare epoxy flooring materials.

Compared with the traditional epoxy floor, the epoxy floor material of the present invention has the following advantages:

1. The epoxy floor material of the present invention not only inherits the superior physical and chemical properties of epoxy resin, such as wear resistance, scrub resistance, oil resistance, aging resistance, strong chemical resistance, and strong adhesion. By using glass fiber as the material skeleton, the impact resistance and tensile strength of the material are further enhanced. It is a high-strength composite material, which is more durable than traditional coating materials and has a longer service life than traditional coating floors.

2, what the production technology of epoxy floor material of the present invention adopted is assembly line mechanized production, produces under conditions such as constant temperature, humidity, the performance stability of product and superiority are stronger, not affected by environmental conditions (such as temperature, humidity) etc.), it overcomes the defects that traditional coating epoxy floor products are sensitive to objective environmental conditions such as temperature and humidity during the curing process.

3. The epoxy floor material of the present invention adopts on-site mechanical shearing and mechanical seamless installation, and the adhesive uses epoxy resin fast curing adhesive. The entire curing process only takes about 2 hours, and the bonding force is extremely strong. The entire installation process is only 20% of the time required by the original painting process, the installation efficiency is high, and it is not affected by objective factors such as climate, temperature, humidity, etc. The traditional painting process is completed in 4 to 5 processes. Each process requires a curing time of about 24 hours, and the completion of the entire process requires at least 6 working days (excluding delays due to objective conditions such as temperature and humidity). The traditional coating floor has relatively high requirements for the moisture content of the construction and installation ground. It is harsh and needs to be less than 8%. For new industrial plants, the new concrete on the ground is completely dry, and it usually takes about 45 to 60 days for the moisture content to be lower than 8%. The epoxy floor material of the present invention can greatly improve the moisture content.

4. The epoxy floor material of the present invention uses an active agent as a diluent for the resin, and does not contain highly volatile toxic gases. There is no volatile toxic gas emission in the production process or in the installation and use process, which fully meets the increasingly stringent environmental protection requirements of users and the concept of social environmental protection. Traditional coating materials require the resin to be diluted at room temperature, so almost all of them use benzene-based highly volatile diluents (such as toluene, xylene, etc.). Although these gaseous substances are no longer contained in the material after the material is completely cured, there will be different degrees of benzene toxic gas discharged during production, installation, construction and early use, causing a certain degree of harm to the environment and human body.

Description of drawings

Fig. 1 is the structural representation of epoxy floor of the present invention;

Fig. 2 is a flow chart of the epoxy floor production process of the present invention.

Detailed ways

Example 1

First, two components of floor coatings were prepared respectively, wherein the weight percentage of component A consisted of: 45% epoxy resin E-44 (produced by Zhejiang Jiahua Group Co., Ltd.), 30% talcum powder, 15% Butyl glycidyl ether (diluent), 3% nitrile rubber with carboxyl end group (toughener), 0.3% polyacrylate copolymer (leveling agent), 0.3% polyorganosiloxane ( defoamer), 2.4% polydimethylsiloxane (anti-scratch agent) and 4% color paste. Component B consists of: 85% polyamide 300 type (amine value 305mgKOH/100g, viscosity 6-20pa.s/25°C) (curing agent) and 15% 2,4,6-tri(dimethyl Aminomethyl)phenol (curing accelerator). Mix component A and component B at a weight ratio of 10:3 to prepare a floor coating.

Use a coating machine to evenly coat the floor coating on polyurethane synthetic leather (thickness 0.5mm, elastic modulus 200kg/cm ² ), then compound it with glass fiber cloth (thickness 0.6mm), and then spread it evenly on the glass fiber cloth Apply the above-mentioned floor paint, and then send it into an oven at 90°C, and control its residence time to 20 minutes. Finally, the material is trimmed and rolled to obtain the epoxy floor material as shown in Figure 1.

Example 2

First, two components of floor coatings were prepared respectively, wherein the weight percentage of component A consisted of: 40% epoxy resin E-51 (produced by Zhejiang Jiahua Group Co., Ltd.), 30% talcum powder, 15% Butyl glycidyl ether (diluent), 5% liquid nitrile rubber (toughener), 0.5% polyether modified silicone oil (leveling agent), 0.2% silicone (defoamer), 4.3% Polydimethylsiloxane (anti-scratch agent) and 5% color paste. Component B consists of 85% 300 type (amine value 305mgKOH/100g, viscosity 6-20pa.s/25°C) (curing agent) and 15% benzyldimethylamine (curing accelerator). Mix component A and component B at a weight ratio of 10:5 to prepare a floor coating

Use a coating machine to evenly coat the floor coating on polyurethane synthetic leather (thickness 0.8mm, elastic modulus 250kg/cm ² ), then compound it with glass fiber cloth (thickness 0.2mm), and then spread it evenly on the glass fiber cloth Apply the above-mentioned floor paint, then send it into an oven at 120°C, and control its residence time to 15 minutes. Finally, the material is trimmed and rolled to obtain the epoxy floor material as shown in Figure 1.

Example 3

First, two components of floor coatings are prepared respectively, wherein the weight percentage of component A consists of: 50% epoxy resin E-51 (produced by Zhejiang Jiahua Group Co., Ltd.), 20% talcum powder, 15% Monofunctional aromatic glycidyl ether (diluent), 5% liquid nitrile rubber (toughener), 0.8% polyether modified silicone oil (leveling agent), 0.2% silicone (defoamer) , 4.0% polyether modified polydisiloxane (anti-scratch agent) and 5% color paste. B component weight percentage is composed of: 90% modified alicyclic amine curing agent (amine value 400-600mgKOH/100g, viscosity 300-600mpa.s/25 ℃) and 10% benzyl dimethylamine (curing accelerator ). Mix component A and component B at a weight ratio of 10:5 to prepare a floor coating.

Use the coating machine to evenly coat the floor coating on polyurethane synthetic leather (thickness 1mm, elastic modulus 300kg/cm ² ), then compound it with glass fiber cloth (thickness 0.4mm), and then evenly coat it on the glass fiber cloth Cover the above-mentioned floor paint, then send it into an oven at 120°C, control its residence time to 20 minutes, and finally cut and roll the material to obtain the epoxy floor material as shown in Figure 1.

The oxygen floor material obtained above is composed of a polyurethane synthetic leather layer 1, a glass fiber cloth layer 2 bonded to the polyurethane synthetic layer 1 through a floor paint, and a floor paint layer 3 coated on the glass fiber cloth layer 2. Of course, the polyurethane synthetic layer 1 and the glass fiber cloth layer 2 can be bonded by conventional adhesives.

comparative example

According to the three construction methods of primer, middle coat and top coat, the primer is Guangzhou Hongdi Chemical CK-101 sealing primer, and the CK-101A component and the CK-101B component are mixed in a weight ratio of 1:1. Stir evenly, and use a scraper to scrape and coat at a rate of 0.15kg/m ² . After 24 hours, batch scrape the intermediate coating, the intermediate coating is Guangzhou Hongdi Chemical CK-202 intermediate coating, mix the CK-202A component and CK-202B component in a weight ratio of 5:1 and stir evenly, use a scraper to The amount of 0.90kg/m ² scrape coating. Sand with 400-grit sandpaper after 24 hours at room temperature. The topcoat is Guangzhou Hongdi Chemical CK-3061 topcoat. Mix CK-3061A component and CK-3061B component at a weight ratio of 2:1 and stir evenly, and roll coat with a roller at a dosage of 0.11kg/ ^m2 Once again, place it at room temperature for 48 hours to make an epoxy floor.

The floors in the above-mentioned comparative examples, embodiment 1, embodiment 2 and embodiment 3 are subjected to wear resistance, scrub resistance, tensile strength, pencil strength, adhesion, impact resistance, bending strength and organic solvent volatilization The specific test results are shown in the following table:

Test items Testing method comparative example Example 1 Example 2 Example 3 Abrasion resistance (750g, 300 rpm) GB/T1768-1979 0.010 0.003 0.004 0.002 Scrub resistance GB/T9266-1988 10000 times 15000 times 15000 times 18000 times Tensile Strength GB/T1040-1992 13.4MPa 24.7MPa 21.3MPa 20.7MPa

Test items Testing method comparative example Example 1 Example 2 Example 3 Pencil hardness GB/T6739-1996 ＞2H ＞3H ＞3H ＞3H Adhesion GB/T9286-1988 Level 0 Level 0 Level 0 Level 0 Impact resistance (1kg, 50cm) GB/T1732-1993 There are cracks No abnormality No abnormality No abnormality Bending strength B/T9341-2000 4MPa 28MPa 25MPa 28MPa Volatile organic solvent ISO11890-2-2007 210g/kg 10g/kg 7g/kg 9g/kg

Claims (10)

1. an epoxy floor material, is characterized in that: by polyurethane synthetic leather layer (3), the glass fiber cloth layer (2) that is bonded mutually with polyurethane synthetic leather layer (3) and floor coating is coated on It consists of a floor paint layer (1) formed on the surface of a glass fiber cloth layer (2). 2. The epoxy floor material according to claim 1, characterized in that: the polyurethane synthetic leather layer (3) and the glass fiber cloth layer (2) are bonded to each other through the floor paint. 3. The epoxy floor material according to claim 1, characterized in that: the polyurethane synthetic leather layer (3) has a thickness of 0.5-1.0 mm and an elastic modulus of 200-300 kg/cm ² . 4. The epoxy floor material according to claim 1, characterized in that: the thickness of the glass fiber cloth layer (2) is 0.2-0.6mm. 5. The epoxy floor material according to claim 1, characterized in that, said floor coating is composed of component A and component B with a weight ratio of 10:5-10:3. Wherein, the weight percent of A component consists of: Epoxy resin 40～50% Toughener 1～5% Mineral filler 20～30% Thinner 10～15% Defoamer 0.1～0.5% Leveling agent 0.1～0.5% Anti-scratch agent 1～5% Color paste 1～5% Wherein, the weight percent of B component consists of: Curing agent 80～90% Curing accelerator 10-20%. 6. The epoxy floor material according to claim 5, wherein the epoxy resin is at least one of resin E44 and resin E51. 7. epoxy floor material according to claim 5, is characterized in that: described toughening agent is at least one in the nitrile rubber of band carboxyl end group, nitrile rubber and polyurethane modified epoxy resin . 8. The epoxy floor material according to claim 5, characterized in that: said mineral filler is at least one of talcum powder, quartz powder, and sanfly powder. 9. The epoxy floor material according to claim 5, characterized in that: the curing agent is at least one of a polyamide curing agent and a modified cycloaliphatic amine curing agent. 10. a kind of preparation method of epoxy floor material as claimed in claim 1, comprises the following steps: polyurethane synthetic leather and glass fiber cloth are bonded and compounded, then at glass fiber cloth surface coating floor paint, finally in 90 Bake at ~120°C for 15-20 minutes to prepare the epoxy floor material.

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