阅读说明：本技术 一种厨房大理石用蜂窝板及其制备方法 (Kitchen marble honeycomb plate and preparation method thereof ) 是由 李丹丹 黄丹 周显美 于 2020-07-06 设计创作，主要内容包括：本发明属于建筑技术领域,具体涉及一种厨房大理石用蜂窝板及其制备方法和应用。本发明厨房大理石用蜂窝板包括上面板、胶膜、塑料基材板和下面板,下面板与塑料基材板一侧通过胶膜连接,塑料基材板另一侧与上面板通过胶膜连接,塑料基材板为蜂窝体结构,胶膜包括以下重量份数组分制备而成：聚四氢呋喃醚多元醇12～20份、2,4-甲苯二异氰酸酯12～18份、环氧树脂20～50份、聚甲基丙烯酸正丁酯20～30份、油醇磺基琥珀酸酯二钠1～5份、玻璃纤维5～10份、偶联剂1～5份、固化剂10～15份、乙酸乙酯25～90份。本发明蜂窝板能够具有较好的耐水性和较低的衰减性,与大理石复合后能够适用于在厨房中应用。(The invention belongs to the technical field of buildings, and particularly relates to a kitchen marble honeycomb plate and a preparation method and application thereof. The invention relates to a honeycomb plate for kitchen marble, which comprises an upper panel, a glue film, a plastic substrate plate and a lower panel, wherein the lower panel is connected with one side of the plastic substrate plate through the glue film, the other side of the plastic substrate plate is connected with the upper panel through the glue film, the plastic substrate plate is of a honeycomb structure, and the glue film comprises the following components in parts by weight: 12-20 parts of polytetrahydrofuran ether polyol, 12-18 parts of 2, 4-toluene diisocyanate, 20-50 parts of epoxy resin, 20-30 parts of poly n-butyl methacrylate, 1-5 parts of oleyl sulfosuccinate disodium, 5-10 parts of glass fiber, 1-5 parts of coupling agent, 10-15 parts of curing agent and 25-90 parts of ethyl acetate. The honeycomb plate disclosed by the invention has better water resistance and lower attenuation, and can be suitable for being applied to a kitchen after being compounded with marble.)

1. The utility model provides a kitchen is honeycomb panel for marble, includes top panel, glued membrane, plastics substrate board and panel down, the glued membrane is passed through with plastics substrate board one side to the panel down and is connected, plastics substrate board opposite side passes through glued membrane with the top panel and is connected, plastics substrate board is the honeycomb structure, its characterized in that, the glued membrane includes that following parts by weight component preparation forms: 12-20 parts of polytetrahydrofuran ether polyol, 12-18 parts of 2, 4-toluene diisocyanate, 20-50 parts of epoxy resin, 20-30 parts of poly n-butyl methacrylate, 1-5 parts of oleyl sulfosuccinate disodium, 5-10 parts of glass fiber, 1-5 parts of coupling agent, 10-15 parts of curing agent and 25-90 parts of ethyl acetate.

2. The kitchen marble honeycomb panel according to claim 1, wherein the adhesive film comprises the following components in parts by weight: 15-18 parts of polytetrahydrofuran ether polyol, 12-15 parts of 2, 4-toluene diisocyanate, 35-45 parts of epoxy resin, 20-25 parts of poly n-butyl methacrylate, 3-5 parts of oleyl sulfosuccinate disodium, 5-8 parts of glass fiber, 2-3 parts of coupling agent, 11-13 parts of curing agent and 25-35 parts of ethyl acetate.

3. The kitchen marble honeycomb panel according to claim 1 or 2, wherein the preparation method of the adhesive film comprises the following steps:

a. mixing oleyl sulfosuccinate disodium and ethyl acetate at 60-70 ℃ to obtain a mixture;

b. mixing epoxy resin and polytetrahydrofuran ether polyol, heating to 95-100 ℃, continuously heating to 110-120 ℃, dehydrating for 2h under high vacuum, then cooling to 50-55 ℃, adding the mixture obtained in the step a and 2, 4-toluene diisocyanate, reacting for 2h at 80-85 ℃, and defoaming in vacuum to obtain a prepolymer;

c. mixing poly n-butyl methacrylate and a coupling agent, heating to 70-80 ℃ and reacting for 2h to obtain a reactant;

d. and c, adding the reactant, the curing agent and the glass fiber in the step c into the prepolymer in the step a, and quickly mixing and stirring for 0.3-0.5 h to obtain the polyurethane elastomer.

4. A method for preparing the honeycomb panel for kitchen marble according to claim 1 or 2, comprising the steps of:

s1) preparing an upper panel and a lower panel;

s2) preparing a plastic substrate plate;

s3) preparing an adhesive film;

s4) stacking the lower panel, the adhesive film, the plastic substrate plate, the adhesive film and the upper panel from bottom to top, transferring the stacked panels to a composite press through a conveying belt for hot pressing, and cooling to room temperature to obtain the plastic composite plate.

5. The method for preparing honeycomb panel for kitchen marble as claimed in claim 4, wherein the conditions of the compounding press in step S3 are: in the first stage, the temperature is 75-90 ℃, and the pressure is 1.5-2 MPa; in the second stage, the temperature is 120-130 ℃, and the pressure is 0.3-1 MPa; and in the third stage, the temperature is 60-70 ℃, and the pressure is 2-3 MPa.

6. The method for preparing a honeycomb panel for kitchen marble as set forth in claim 2, wherein the method for preparing the upper or lower panel in the step S1 comprises the steps of:

step A, soaking the aluminum alloy in an aqueous solution containing 50-60 g/L trisodium phosphate at the temperature of 40-50 ℃ for 3min, washing with water for 3-5 times, and pretreating the aluminum alloy;

step B, placing the aluminum alloy pretreated in the step A in an aqueous solution containing 30g/L of sodium phosphate, 0.5g/L of allyl alcohol polyoxyethylene ether and 10g/L of potassium permanganate at 40 ℃ for treating for 8min, and then washing for 5min to obtain passivated aluminum alloy;

and step C, placing the passivated aluminum alloy in the step B into an aqueous solution containing 10g/L of aluminum sulfate and 10g/L of sodium hydroxide for treatment for 15min to obtain an upper panel or a lower panel.

7. The method for preparing a honeycomb panel for kitchen marble as set forth in claim 2, wherein the method for preparing the plastic substrate panel comprises the steps of:

uniformly mixing 20-40 parts of polyethylene, 25-30 parts of aluminum hypophosphite, 3-8 parts of glass fiber, 10-20 parts of maleic anhydride grafted polyethylene and 0.5-3 parts of silane coupling agent, heating at 170-220 ℃ for 3-5 min, and extruding into a molding press for molding to obtain the plastic substrate plate.

Technical Field

The invention belongs to the technical field of buildings, and particularly relates to a kitchen marble honeycomb plate and a preparation method and application thereof.

Background

Because marble has complicated and changeable texture and gorgeous color, the marble is often applied to interior decoration, but the marble has low outturn percentage, high density, large transportation capacity, low tensile strength and easy fracture, so that the market price of the marble plate is higher. Aiming at the phenomenon, people solve the problem by a compounding method, and compound marble with structural materials such as ceramic tiles, glass, honeycomb plates and the like, so that the performance characteristics of the marble are improved, and the natural color and material of the marble are not lost. The honeycomb panel compounded with marble is rapidly favored by people in terms of economy, convenient construction method, excellent processability and the like. The honeycomb panel is generally formed by a sandwich structure formed by a polyethylene panel and an aluminum alloy panel on the upper and lower surfaces, and the connection between the polyethylene panel and the aluminum alloy panel is connected through an adhesive, and because the polyurethane has stronger urethane bond polarity, the polyurethane adhesive has good adhesion to various substrates such as metal, plastic, glass and the like, the polyurethane adhesive is often used for bonding the sandwich structure.

The adhesive for rubber developed and produced at home at present has little difference with the similar products at abroad in the aspects of bonding strength, high temperature resistance, water resistance and the like. In order to improve the comprehensive performance of polyurethane adhesives and widen the application range thereof, many researchers have conducted a series of modification studies, such as mechanical blending modification, chemical blending modification, and grafting modification. For example, chinese patent CN104845573A discloses a high temperature resistant two-component ester-soluble polyurethane adhesive and a preparation method thereof, wherein a main agent is prepared by mixing a main agent processed by dimethyl terephthalate, ethylene glycol, diethylene glycol, phthalic anhydride, adipic acid, diphenylmethane diisocyanate, ethyl acetate, and a silane coupling agent, and a curing agent processed by epoxy resin, a silane coupling agent, triethylenetriamine, and ethyl acetate, and the obtained adhesive has high initial adhesion, excellent composite strength, and high temperature resistance to a composite material, but the water resistance of the adhesive cannot be known.

Disclosure of Invention

The invention aims to provide a kitchen marble honeycomb plate and a preparation method thereof, wherein the honeycomb plate has better water resistance and lower attenuation by preparing an adhesive film, and is suitable for being applied to a kitchen after being compounded with marble.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a kitchen is honeycomb panel for marble, includes top panel, glued membrane, plastics substrate board and panel down, the glued membrane is passed through with plastics substrate board one side to panel and glued membrane connection down, plastics substrate board opposite side passes through glued membrane with the top panel and is connected, plastics substrate board is the honeycomb structure, the glued membrane includes that following parts by weight component preparation forms: 12-20 parts of polytetrahydrofuran ether polyol, 12-18 parts of 2, 4-toluene diisocyanate, 20-50 parts of epoxy resin, 20-30 parts of poly n-butyl methacrylate, 1-5 parts of oleyl sulfosuccinate disodium, 5-10 parts of glass fiber, 1-5 parts of coupling agent, 10-15 parts of curing agent and 25-90 parts of ethyl acetate.

In the invention, polyurethane is obtained by the reaction of polytetrahydrofuran ether polyol and 2, 4-toluene diisocyanate, when the polyurethane is crosslinked with epoxy resin, the plane tensile strength and the roller peeling strength are improved, the water resistance of the cellular board can be improved by adding poly n-butyl methacrylate into the system, and the cellular board has lower attenuation, but the plane tensile strength and the roller peeling strength are reduced, and the cellular board can simultaneously have better plane tensile strength, roller peeling strength, water resistance and lower attenuation by adding oleyl sulfosuccinate disodium into the system, presumably because the oleyl sulfosuccinate disodium plays a role between the polyurethane obtained by the reaction of polytetrahydrofuran ether polyol and 2, 4-toluene diisocyanate and the oleyl sulfosuccinate disodium, so that the crosslinking degree between the polyurethane and the oleyl sulfosuccinate disodium is increased, thereby making entry of water molecules difficult.

Further, the adhesive film comprises the following components in parts by weight: 15-18 parts of polytetrahydrofuran ether polyol, 12-15 parts of 2, 4-toluene diisocyanate, 35-45 parts of epoxy resin, 20-25 parts of poly n-butyl methacrylate, 3-5 parts of oleyl sulfosuccinate disodium, 5-8 parts of glass fiber, 2-3 parts of coupling agent, 11-13 parts of curing agent and 25-35 parts of ethyl acetate.

Further, the coupling agent is azobisisobutyronitrile.

Further, the curing agent is diaminodiphenylmethane.

Further, the preparation method of the adhesive film comprises the following steps:

a. mixing oleyl sulfosuccinate disodium and ethyl acetate at 60-70 ℃ to obtain a mixture;

b. mixing epoxy resin and polytetrahydrofuran ether polyol, heating to 95-100 ℃, continuously heating to 110-120 ℃, dehydrating for 2h under high vacuum, then cooling to 50-55 ℃, adding the mixture obtained in the step a and 2, 4-toluene diisocyanate, reacting for 2h at 80-85 ℃, and defoaming in vacuum to obtain a prepolymer;

c. mixing poly n-butyl methacrylate and a coupling agent, heating to 70-80 ℃ and reacting for 2h to obtain a reactant;

d. and c, adding the reactant, the curing agent and the glass fiber in the step c into the prepolymer in the step a, and quickly mixing and stirring for 0.3-0.5 h to obtain the polyurethane elastomer.

The invention also provides a preparation method of the honeycomb plate for kitchen marble, which comprises the following steps:

s1) preparing an upper panel and a lower panel;

s2) preparing a plastic substrate plate;

s3) preparing an adhesive film;

s4) stacking the lower panel, the adhesive film, the plastic substrate plate, the adhesive film and the upper panel from bottom to top, transferring the stacked panels to a composite press through a conveying belt for hot pressing, and cooling to room temperature to obtain the plastic composite plate.

Further, it has been found that the surface of the honeycomb panel is uneven due to the fact that the honeycomb panel is wrapped during use, the plastic substrate sheet in the honeycomb panel is provided with granular infusions during extrusion, the granular infusions are generally caused by flame retardants and glass fibers, then due to high bonding temperature, air around the bulges can not be completely extruded and is clamped between the sheet layers, and the extremely thin air layer blocks the full bonding of the bonding layer. Therefore, in the preparation method, the hot pressing temperature is adjusted, the adhesive film is fully attached to the upper panel, the lower panel and the plastic substrate plate through the first stage, the reaction speed of the adhesive film with the upper panel, the lower panel and the plastic substrate plate is slowed down due to low temperature, the reaction speed is accelerated through the second stage, and the reacted state of the adhesive film, the upper panel, the lower panel and the plastic substrate plate can be strengthened through the third stage.

Further, the conditions of the compound press in the step S3 are as follows: in the first stage, the temperature is 75-90 ℃, and the pressure is 1.5-2 MPa; in the second stage, the temperature is 120-130 ℃, and the pressure is 0.3-1 MPa; and in the third stage, the temperature is 60-70 ℃, and the pressure is 2-3 MPa.

Further, the method for preparing the upper panel or the lower panel in step S1 includes the steps of:

step A, soaking the aluminum alloy in an aqueous solution containing 50-60 g/L trisodium phosphate at the temperature of 40-50 ℃ for 3min, washing with water for 3-5 times, and pretreating the aluminum alloy;

step B, placing the aluminum alloy pretreated in the step A in an aqueous solution containing 30g/L of sodium phosphate, 0.5g/L of allyl alcohol polyoxyethylene ether and 10g/L of potassium permanganate at 40 ℃ for treating for 8min, and then washing for 5min to obtain passivated aluminum alloy;

and step C, placing the passivated aluminum alloy in the step B into an aqueous solution containing 10g/L of aluminum sulfate and 10g/L of sodium hydroxide for treatment for 15min to obtain an upper panel or a lower panel.

Further, the preparation method of the plastic substrate plate comprises the following steps:

uniformly mixing 20-40 parts of polyethylene, 25-30 parts of aluminum hypophosphite, 3-8 parts of glass fiber, 10-20 parts of maleic anhydride grafted polyethylene and 0.5-3 parts of silane coupling agent, heating at 170-220 ℃ for 3-5 min, and extruding into a molding press for molding to obtain the plastic substrate plate.

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

the glue film prepared by the invention can be applied to a honeycomb plate, so that the honeycomb plate has better water resistance and lower attenuation, the occurrence probability of edge warping is low, and the glue film can be applied to a kitchen after being compounded with marble.

Drawings

Fig. 1 is a schematic structural view of a honeycomb panel for kitchen marble of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples. It should not be understood that the scope of the above-described subject matter of the present invention is limited to the following examples.