CN111574184A - A kind of environmental protection composite material for decorative panel wall and preparation method thereof - Google Patents

Abstract

The invention discloses an environment-friendly composite material for decorative panel walls, which comprises the following components in parts by mass: 28-33 parts of magnesium oxide, 28-33 parts of magnesium chloride solution with a concentration of 23-25%, 15-20 parts of first-grade Fly ash, 6-10 parts of filler, 4-6 parts of obsidian, 4-6 parts of modified kaolin, 2-4 parts of microsilica, 2-4 parts of active aluminum oxide, 1-2 parts of hydrophobic Water agent, 1-2 parts of water repellant, 1-3 parts of wollastonite, 1-2 parts of waterproofing agent, 0.5-1 part of reinforcing fiber filaments, 1.5-3 parts of modifier. The invention also discloses a preparation method of the environmental protection composite material for the decorative panel wall. The environmental protection composite material of the invention has good fire resistance, low moisture content, no toxic chemical substances, good freeze-thaw resistance, artificial aging resistance and bending strength, strong compressive performance, not easy to deform and crack, high strength and good toughness. The mechanical properties are stable; the ratio of raw materials is scientific and reasonable, environmental protection and energy saving, the production process is simple, and it has strong market competitiveness.

Description

A kind of environmental protection composite material for decorative panel wall and preparation method thereof

technical field

The invention belongs to the technical field of material preparation, and particularly relates to an environment-friendly composite material for decorative panel walls and a preparation method thereof.

Background technique

In recent years, more and more types of new wall materials have appeared in the society, of which there are more applications, such as gypsum or cement lightweight partition boards, color steel plates, aerated concrete blocks, steel mesh foam boards, small Concrete hollow block, gypsum board, gypsum block, ceramic particle block, sintered porous brick, shale brick, solid concrete brick, PC slab, horizontal hole concrete wallboard, activated carbon wall, new partition wall, etc.

However, the existing walls generally have the problems of insufficient deformation resistance and easy cracking. They are prone to damage and fall off when encountering impacts, and cracks and loosening may occur after long-term use, which is prone to potential safety hazards. Therefore, the development and design of an environmentally friendly composite material for building wall panels with high strength, sufficient toughness and non-deformation has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide an environmentally friendly composite material for decorative panel walls and a preparation method thereof, so as to solve the technical problems raised in the above-mentioned background art.

In order to achieve the above object, the technical scheme proposed by the present invention is:

An environmentally friendly composite material for decorative panel walls, comprising the following components in parts by mass: 28-33 parts of magnesium oxide, 28-33 parts of magnesium chloride solution with a concentration of 23-25%, 15-20 parts of first-grade fly ash, 6-10 parts of filler, 4-6 parts of obsidian, 4-6 parts of modified kaolin, 2-4 parts of microsilica, 2-4 parts of active aluminum oxide, 1-2 parts of water repellent, 1 ~2 parts of water repellent, 1 to 3 parts of wollastonite, 1 to 2 parts of water repellent, 0.5 to 1 part of reinforcing fiber filaments, and 1.5 to 3 parts of modifier.

Further, the magnesium chloride solution is a solution prepared by dissolving 99.9% anhydrous magnesium chloride or magnesium chloride hexahydrate with a content of more than 97% in water.

Further, the filler is 60-100 mesh quartz sand or borosilicate glass sand.

Further, the water repellent is phosphoric acid or phosphate.

Further, the water repellent is one of vinyl acetate-ethylene copolymer, acrylic acid and gelatin.

Further, the reinforcing fiber filaments are glass fiber chopped strands or high tenacity PP polypropylene fiber filaments with a length of 6-12 mm.

Further, the modifier includes the following components in parts by mass: 40-50 parts of distilled water, 10-20 parts of ferrous sulfate, 4-6 parts of oxalic acid, 1-3 parts of trisodium phosphate, and sodium hexametaphosphate 0.5-1 part, methyl cellulose 2-4 parts, acrylic acid 10-20 parts, water glass 10-15 parts, triethanolamine 0.3-0.6 part, sodium nitrite 0.4-0.6 part, sodium chloride 0.8-1.5 part.

Preferably, the modifier includes the following components in parts by mass: 45 parts of distilled water, 15 parts of ferrous sulfate, 5 parts of oxalic acid, 2 parts of trisodium phosphate, 1 part of sodium hexametaphosphate, 3 parts of methyl cellulose parts, 15 parts of acrylic acid, 12 parts of water glass, 0.5 part of triethanolamine, 0.5 part of sodium nitrite, and 1 part of sodium chloride.

The invention also discloses a preparation method of the environmental protection composite material for decorative panel walls, comprising the following steps:

S1. Prepare a magnesium chloride solution: put an appropriate amount of solid magnesium chloride into water for mixing and stirring, so that the solid magnesium chloride is completely dissolved in the water, and a magnesium chloride solution with a concentration of 23-25% is prepared and allowed to stand, and the standing time is more than 24h.

S2, mix 15-20 parts of first-grade fly ash, 6-10 parts of filler, 4-6 parts of obsidian, 4-6 parts of modified kaolin, 2-4 parts of microsilica, and 2-4 parts of active trio Alumina and 1-3 parts of wollastonite are put into a dry powder mixer for stirring, and the stirring time is more than 30 minutes to prepare a dry powder of the mixture.

S3. Weigh 28-33 parts of magnesium chloride solution and 1.5-3 parts of modifier and mix them together.

S4. Weigh 28-33 parts of magnesium oxide and pour it into the solution prepared in step S1, and stir for 3-5 min.

S5. Pour the mixed dry powder stirred in step S2 into the solution prepared in step S4 and stir for 3-5 minutes.

S6. Add 1-2 parts of water repellent, 1-2 parts of water-repellent agent, 1-2 parts of water-repellent agent and 0.5-1 part of reinforcing fiber to the solution prepared in step S5 in turn, and stir for 4-6 minutes to prepare get slurry.

S7, forming the slurry prepared in step S6 through a silica gel mold to obtain an environmentally friendly composite material for decorative panel walls.

Further, in the step S7, the preparation of the environmental protection composite material for the decorative panel wall includes the following steps:

Q1. Coat the stirred slurry on the surface of the silicone mold, and the thickness is controlled at 2-4mm.

Q2. Spread the cut glass fiber on the slurry, drizzle the slurry and spread it evenly on the tiled glass fiber.

Q3. Spread the fiber mesh cloth, drizzle the slurry and spread it evenly on the laid fiber mesh cloth.

Q4. Lay the cut glass fiber on the slurry again, drizzle the slurry and spread it evenly on the tiled glass fiber.

Q5. Lay the fiber mesh cloth again, drizzle the slurry and spread it evenly on the laid fiber mesh cloth.

Q6. After the slurry is solidified and formed, the mold is removed to obtain an environmentally friendly composite material for decorative panel walls.

Compared with the prior art, the present invention has the following beneficial effects: 1. good fire performance, the combustion performance reaches the GB8624-2012 standard non-combustible A (A1) level; 2. the moisture content is less than 12%, which conforms to the GB/T24137-2009 standard ; 3. Formaldehyde emission < 0.1mg/L, in line with GB18584-2001 standard; 4. In line with GB/T24137-2009 freeze-thaw resistance standard, retention rate of flexural strength > 90%, surface quality without cracks, bubbling; 5. In line with GB/T24137-2009 anti-artificial aging standard, flexural strength retention rate> 85%, color fastness to light> 3; , the minimum value>24Mpa; 7. In line with GB18584-2001 soluble metal standard, soluble lead <0.5mg/kg, soluble cadmium ≤1mg/kg, soluble chromium <0.5mg/kg, soluble mercury <0.5mg/kg; 7. Shao Hardness > 90, conforming to GB/T24137-2009 standard; 8. Water absorption thickness expansion rate < 0.1%, conforming to GB/T24137-2009 standard. The raw material ratio of the invention is scientific and reasonable, environmental protection and energy saving, simple production process, and strong market competitiveness.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

An environmentally friendly composite material for decorative panel walls, comprising the components as shown in Table 1 in parts by mass:

Table 1: Recipe table of each component

Example 1

An environmentally friendly composite material for decorative panel walls, comprising the following components in parts by mass: 28 parts of magnesium oxide, 28 parts of magnesium chloride solution, 15 parts of first-grade fly ash, 6 parts of quartz sand, 4 parts of obsidian, and 4 parts of obsidian. Modified kaolin, 2 parts of microsilica, 2 parts of active aluminum oxide, 1 part of water repellent, 1 part of phosphoric acid, 1 part of wollastonite, 1 part of acrylic acid, 0.5 parts of glass fiber chopped strands, 1.5 parts of modified agent. The modifier includes the following components in parts by mass: 40 parts of distilled water, 10 parts of ferrous sulfate, 4 parts of oxalic acid, 1 part of trisodium phosphate, 0.5 part of sodium hexametaphosphate, 2 parts of methyl cellulose, 10 parts of acrylic acid, 10 parts of water glass, 0.3 parts of triethanolamine, 0.4 parts of sodium nitrite, and 0.8 parts of sodium chloride.

The preparation method of the composite material of the present embodiment comprises the following steps:

Preliminary preparation

1. Prepare the magnesium chloride solution, calculate the weight of the anhydrous magnesium chloride and water required to prepare the magnesium chloride solution of the corresponding solubility according to the requirements of the formula, put the two into the container for mixing and stirring, so that the solid magnesium chloride is completely dissolved in the water. At least 24 hours.

2. According to the formula ratio, weigh 15 parts of first-grade fly ash, 6 parts of quartz sand, 4 parts of obsidian, 4 parts of modified kaolin, 2 parts of microsilica, 2 parts of active aluminum oxide, 1 part of silicon limestone, and then put it into a dry powder mixer for mixing, and the mixing time should not be less than half an hour.

Prepare the slurry

1. Weigh the magnesium chloride solution and modifier according to the proportion and mix them together.

2. Weigh the magnesium oxide according to the proportion, pour it into the magnesium chloride solution in step 1 and stir for 3 minutes.

3. Weigh out the dry powder stirred in advance according to the proportion, and pour the dry powder into the magnesium chloride solution and stir for 3 minutes.

4. Add water repellent, phosphoric acid, acrylic acid, and glass fiber chopped strands in sequence and stir for 4 minutes.

Product production

1. First, apply the stirred slurry to the surface of the silicone mold, and the thickness is controlled at 2-4MM.

2. Spread the cut 150-gram glass fiber on the slurry, drizzle the slurry, and spread it evenly on the tiled glass fiber.

3. Spread 3X3 fiber mesh cloth, drizzle the slurry, and evenly spread it on the flat glass fiber mesh cloth.

4. Lay the cut 150-gram glass fiber on the slurry again, drizzle the slurry, and spread it evenly on the tiled glass fiber.

5. Then spread 3X3 fiber mesh cloth, drizzle the slurry, and evenly spread it on the tiled glass fiber mesh cloth.

6. Remove the mold after 4 hours, and the white embryo product is completed.

Embodiment 2

An environmentally friendly composite material for decorative panel walls, comprising the following components in parts by mass: 31 parts of magnesium oxide, 31 parts of magnesium chloride solution, 18 parts of first-grade fly ash, 8 parts of quartz sand, 5 parts of obsidian, and 5 parts of obsidian. Modified kaolin, 3 parts of microsilica, 3 parts of active aluminum oxide, 2 parts of water repellent, 2 parts of phosphoric acid, 2 parts of wollastonite, 1 part of vinyl acetate-ethylene copolymer, 1 part of glass fiber chopped strands , 2 parts modifier. The modifier includes the following components in parts by mass: 45 parts of distilled water, 15 parts of ferrous sulfate, 5 parts of oxalic acid, 2 parts of trisodium phosphate, 1 part of sodium hexametaphosphate, 3 parts of methyl cellulose, 15 parts of acrylic acid, 12 parts of water glass, 0.5 part of triethanolamine, 0.5 part of sodium nitrite, and 1 part of sodium chloride.

The preparation method of the composite material of the present embodiment comprises the following steps:

Preliminary preparation

1. Prepare the magnesium chloride solution, calculate the weight of magnesium chloride hexahydrate and water required to prepare the magnesium chloride solution of the corresponding solubility according to the requirements of the formula, put the two into the container for mixing and stirring, so that the solid magnesium chloride is completely dissolved in the water, and let stand At least 24 hours.

2. According to the formula ratio, weigh 18 parts of first-grade fly ash, 8 parts of quartz sand, 5 parts of obsidian, 5 parts of modified kaolin, 3 parts of microsilica, 3 parts of active aluminum oxide, 2 parts of silicon limestone, and then put it into a dry powder mixer for mixing, and the mixing time should not be less than half an hour.

Prepare the slurry

1. Weigh the magnesium chloride solution and modifier according to the proportion and mix them together.

2. Weigh the magnesium oxide according to the proportion, pour it into the magnesium chloride solution in step 1 and stir for 4 minutes.

3. Weigh out the dry powder that was stirred in advance according to the proportion, and pour the dry powder into the magnesium chloride solution and stir for 4 minutes.

4. Add water repellent, phosphoric acid, vinyl acetate and glass fiber chopped strands in sequence and stir for 5 minutes.

Product production

1. First, apply the stirred slurry to the surface of the silicone mold, and the thickness is controlled at 2-4MM.

2. Spread the cut 150-gram glass fiber on the slurry, drizzle the slurry, and spread it evenly on the tiled glass fiber.

3. Spread 3X3 fiber mesh cloth, drizzle the slurry, and evenly spread it on the flat glass fiber mesh cloth.

4. Lay the cut 150-gram glass fiber on the slurry again, drizzle the slurry, and spread it evenly on the tiled glass fiber.

5. Then spread 3X3 fiber mesh cloth, drizzle the slurry, and evenly spread it on the tiled glass fiber mesh cloth.

6. Remove the mold after 4 hours, and the white embryo product is completed.

Embodiment 3

An environmentally friendly composite material for decorative panel walls, comprising the following components by mass: 33 parts of magnesium oxide, 33 parts of magnesium chloride solution, 20 parts of first-grade fly ash, 10 parts of high borosilicate glass sand, and 6 parts of obsidian , 6 parts of modified kaolin, 4 parts of microsilica, 4 parts of active aluminum oxide, 2 parts of water repellent, 2 parts of phosphate, 3 parts of wollastonite, 2 parts of gelatin, 1 part of high tenacity PP polypropylene fiber silk, 3 parts modifier. The modifier includes the following components in parts by mass: 50 parts of distilled water, 20 parts of ferrous sulfate, 6 parts of oxalic acid, 3 parts of trisodium phosphate, 1 part of sodium hexametaphosphate, 4 parts of methylcellulose, 20 parts of acrylic acid, 15 parts of water glass, 0.6 parts of triethanolamine, 0.6 parts of sodium nitrite, and 1.5 parts of sodium chloride.

The preparation method of the composite material of the present embodiment comprises the following steps:

Preliminary preparation

1. Prepare the magnesium chloride solution, calculate the weight of magnesium chloride anhydrous or magnesium chloride hexahydrate and water required to prepare the magnesium chloride solution of the corresponding solubility according to the requirements of the formula, and put the two into the container for mixing and stirring, so that the solid magnesium chloride is completely dissolved in the water. In water, let stand for at least 24 hours.

2. According to the formula ratio, weigh 20 parts of first-grade fly ash, 10 parts of high borosilicate glass sand, 6 parts of obsidian, 6 parts of modified kaolin, 4 parts of microsilica, 4 parts of active aluminum oxide, 3 parts of wollastonite, and then put it into a dry powder mixer for mixing, and the mixing time should not be less than half an hour.

Prepare the slurry

1. Weigh the magnesium chloride solution and modifier according to the proportion and mix them together.

2. Weigh the magnesium oxide according to the proportion, pour it into the magnesium chloride solution in step 1 and stir for 5 minutes.

3. Weigh out the dry powder stirred in advance according to the proportion, and pour the dry powder into the magnesium chloride solution and stir for 5 minutes.

4. Add water repellent, phosphate, gelatin, and high tenacity PP polypropylene fibers in sequence according to the ratio and stir for 6 minutes.

Product production

1. First, apply the stirred slurry to the surface of the silicone mold, and the thickness is controlled at 2-4MM.

2. Spread the cut 150-gram glass fiber on the slurry, drizzle the slurry, and spread it evenly on the tiled glass fiber.

3. Spread 3X3 fiber mesh cloth, drizzle the slurry, and evenly spread it on the flat glass fiber mesh cloth.

4. Lay the cut 150-gram glass fiber on the slurry again, drizzle the slurry, and spread it evenly on the tiled glass fiber.

5. Then spread 3X3 fiber mesh cloth, drizzle the slurry, and evenly spread it on the tiled glass fiber mesh cloth.

6. Remove the mold after 4 hours, and the white embryo product is completed.

The products prepared by Embodiment 1, Embodiment 2 and Embodiment 3 are respectively detected, and the detection results are as shown in Table 2:

Table 2: Test Results

Although the present invention has been particularly shown and described in connection with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Various changes are within the protection scope of the present invention.

Claims (10)

1. an environmental protection composite material for decorative wallboard, is characterized in that, comprises the following components in parts by mass: 28～33 parts of magnesium oxide, 28～33 parts of magnesium chloride solutions whose concentration is 23～25%, 15～20 parts of magnesium chloride First-grade fly ash, 6-10 parts of filler, 4-6 parts of obsidian, 4-6 parts of modified kaolin, 2-4 parts of microsilica, 2-4 parts of active aluminum oxide, 1-2 parts parts of water repellent, 1 to 2 parts of water repellent, 1 to 3 parts of wollastonite, 1 to 2 parts of water repellent, 0.5 to 1 part of reinforcing fiber filaments, and 1.5 to 3 parts of modifier. 2. a kind of environmental protection composite material for decorative wallboard as claimed in claim 1, is characterized in that: described magnesium chloride solution is to adopt 99.9% anhydrous magnesium chloride or content more than 97% magnesium chloride hexahydrate to be dissolved in water to prepare formed solution. 3 . The environmentally friendly composite material for decorative wall panels according to claim 1 , wherein the filler is 60-100 mesh quartz sand or borosilicate glass sand. 4 . 4. The environmental protection composite material for decorative wall panels according to claim 1, wherein the water repellent is phosphoric acid or phosphate. 5. A kind of environmental protection composite material for decorative wallboard as claimed in claim 1, is characterized in that: described waterproofing agent is a kind of in vinyl acetate-ethylene copolymer, acrylic acid, gelatin. 6 . The environmentally friendly composite material for decorative wall panels according to claim 1 , wherein the reinforcing fiber filaments are glass fiber chopped strands or high tenacity PP polypropylene fiber filaments with a length of 6-12 mm. 7 . 7 . The environmentally friendly composite material for decorative wall panels according to claim 1 , wherein the modifier comprises the following components in parts by mass: 40-50 parts of distilled water, 10-20 parts of ferrous sulfate parts, 4-6 parts of oxalic acid, 1-3 parts of trisodium phosphate, 0.5-1 part of sodium hexametaphosphate, 2-4 parts of methyl cellulose, 10-20 parts of acrylic acid, 10-15 parts of water glass, 0.3 parts of triethanolamine ~ 0.6 parts, 0.4 to 0.6 parts of sodium nitrite, and 0.8 to 1.5 parts of sodium chloride. 8. a kind of environmental protection composite material for decorative wallboard as claimed in claim 7, is characterized in that, described modifier comprises the following components in parts by mass: 45 parts of distilled water, 15 parts of ferrous sulfate, 5 parts of oxalic acid parts, 2 parts of trisodium phosphate, 1 part of sodium hexametaphosphate, 3 parts of methyl cellulose, 15 parts of acrylic acid, 12 parts of water glass, 0.5 part of triethanolamine, 0.5 part of sodium nitrite, and 1 part of sodium chloride. 9. A preparation method of an environmentally friendly composite material for decorative wall panels, characterized in that, comprising the steps: S1, deploy magnesium chloride solution: put an appropriate amount of solid magnesium chloride into water for mixing and stirring, so that the solid magnesium chloride is completely dissolved in the water to obtain a magnesium chloride solution with a concentration of 23 to 25% and leave it to stand, and the standing time is more than 24h; S2, mix 15-20 parts of first-grade fly ash, 6-10 parts of filler, 4-6 parts of obsidian, 4-6 parts of modified kaolin, 2-4 parts of microsilica, and 2-4 parts of active trio Alumina and 1-3 parts of wollastonite are put into a dry powder mixer for stirring, and the stirring time is more than 30min to prepare a dry powder mixture; S3, weigh 28～33 parts of magnesium chloride solution and 1.5～3 parts of modifier and mix together; S4, weigh 28～33 parts of magnesium oxide and pour it into the solution obtained in step S1, and stir for 3～5min; S5, pour the mixed dry powder stirred in step S2 into the solution prepared in step S4 and stir for 3-5 min; S6. Add 1-2 parts of water repellent, 1-2 parts of water-repellent agent, 1-2 parts of water-repellent agent and 0.5-1 part of reinforcing fiber to the solution prepared in step S5 in turn, and stir for 4-6 minutes to prepare get pulp; S7, forming the slurry prepared in step S6 through a silica gel mold to obtain an environmentally friendly composite material for decorative panel walls. 10. The preparation method of an environmentally friendly composite material for decorative wall panels as claimed in claim 9, wherein in the step S7, the preparation of the environmental protection composite material for decorative wall panels comprises the following steps: Q1. Coat the stirred slurry on the surface of the silicone mold, and the thickness is controlled at 2-4mm; Q2. Spread the cut glass fiber on the slurry, drizzle the slurry and spread it evenly on the tiled glass fiber; Q3. Spread the fiber mesh cloth, drizzle the slurry and spread it evenly on the laid fiber mesh cloth; Q4. Lay the cut glass fiber on the slurry again, drizzle the slurry and spread it evenly on the tiled glass fiber; Q5. Lay the fiber mesh cloth again, drizzle the slurry and spread it evenly on the laid fiber mesh cloth; Q6. After the slurry is solidified and formed, the mold is removed to obtain an environmentally friendly composite material for decorative wall panels.