CN103011751B - High-strength composite plate or profile for construction and production method thereof - Google Patents

Abstract

The invention discloses a high-strength composite plate or profile for construction and a production method thereof. The high-strength composite plate or profile is mainly prepared by crushing 40-50 parts of magnesium chloride and mixing it with 30-50 parts of water, and then mixing 5-17 parts of dilute sulfuric acid with a weight percentage concentration of 5-12% with 80-100 parts of light magnesium oxide, 0.7-1.0 parts of zinc stearate, 20-50 parts of talcum powder, 0.75-1.5 parts of cellulose, and 1.5-2.5 parts of resin to obtain a slurry mixture, and then compounding it with glass fiber braid to form a layered composite material of at least two layers of glass fiber braid and the slurry mixture therebetween. Compared with the prior art, the invention can be made into various building plates, profiles or prefabricated components, which are light in weight, high in strength, easy to carry and install, and particularly strong in compression and deformation resistance, and have the characteristics of corrosion resistance and moisture resistance. It is suitable for supporting parts in various building facilities, such as culverts, shafts, etc., especially for use in occasions with narrow working surfaces.

Description

High-strength composite plate or profile for construction and production method thereof

technical field

The invention relates to a building composite plate or profile and its production method, in particular to a high-strength building composite plate or profile and its production method.

Background technique

The current building boards or profiles, especially man-made building boards or profiles, have low strength and weak compression and deformation resistance. However, high-strength building plates or profiles such as concrete are heavy, and it is not convenient to carry and install, so it is not suitable for narrow and small working surfaces.

Contents of the invention

The object of the present invention is to provide a kind of building composite plate or profile and its production method, especially a kind of high-strength composite plate or profile for building and its production method.

The high-strength composite board or profile for construction of the present invention is mainly produced through the following process: take 40-50 parts of magnesium chloride by weight, pulverize and mix with 30-50 parts of water, and 5-50 parts of dilute sulfuric acid with a concentration of 5-12% by weight 17 parts, mixed with 80-100 parts of light magnesium oxide, 0.7-1.0 parts of zinc stearate, 20-50 parts of talcum powder, 0.75-1.5 parts of cellulose, and 1.5-2.5 parts of resin to obtain a slurry mixture.

Of course, the above-mentioned dilute sulfuric acid can also be diluted with concentrated sulfuric acid and water to form a dilute sulfuric acid with a concentration of 5 to 12% by weight.

The light magnesium oxide and zinc stearate are pulverized to less than 180 μm, and the resin is one of urea-formaldehyde resin or unsaturated polyester resin.

Take the glass fiber braid and lay it in the mold, evenly brush the above slurry mixture on the glass fiber braid, and then spread the glass fiber braid layer on the slurry mixture, and repeat this process to form at least two layers of glass fiber braid A layered composite with a paste-like mixture in between.

The above-mentioned glass fiber braid can be one or a combination of glass fiber cloth or glass fiber yarn. When glass fiber yarn is used, the glass fiber yarn is preferably laid in a criss-cross pattern. The criss-cross laying may be the criss-cross pattern of adjacent glass fiber filament layers, or the criss-cross pattern of glass fiber filaments in the same layer.

It is best to add one or more of the following by weight to the above slurry mixture: 0.3-0.6 parts of resin, 0.45-0.5 parts of methyl ethyl ketone peroxide (white water), 0.2-0.3 parts of oxalic acid, 1.5-2 parts of waterproof powder share.

The above-mentioned talc powder is preferably replaced by granite stone powder with a diameter of less than 180 μm, preferably less than 75 μm.

Compared with the prior art, the present invention can be made into various building boards, profiles or prefabricated components, which are light in weight, high in strength, convenient in handling and installation, especially strong in compression and deformation resistance, and have anti-corrosion and moisture-proof properties. It is suitable for supporting parts in various building facilities, such as culverts, shafts, etc., especially in places with narrow working surfaces.

Detailed ways

Embodiment 1: Take by weight: 50 parts of magnesium chloride, pulverized and mixed with 30 to 50 parts of water, 10 parts of dilute sulfuric acid with a concentration of 10% by weight, 100 parts of light magnesium oxide and 1.0 part of zinc stearate, pulverized to Below 180 μm, 30 parts of talcum powder, 0.75-1.5 parts of cellulose, 2 parts of urea-formaldehyde resin, 0.3 part of resin, 0.5 part of methyl ethyl ketone peroxide, 0.2 part of oxalic acid, 1.5 parts of waterproof powder, mix the above materials evenly to get a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3-5mm, and then spread the glass fiber braid layer on the slurry mixture, repeat this process for 3 Second, a layered composite member consisting of 4 layers of fiberglass braids with a paste-like mixture in between.

Embodiment 2: Take by weight: 40 parts of magnesium chloride, pulverize and mix with 40 parts of water, get fuming concentrated sulfuric acid and dilute into the dilute sulfuric acid that concentration is 12% by weight, then get 8 parts of prepared dilute sulfuric acid, lightly 100 parts of high-quality magnesium oxide and 0.7 parts of zinc stearate, all crushed to less than 150 μm, 20 parts of talcum powder, 0.75 parts of cellulose, 1.5 parts of urea-formaldehyde resin, 0.6 parts of resin, 0.5 parts of methyl ethyl ketone peroxide, 0.25 parts of oxalic acid, 2 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture.

Lay a layer of glass fiber cloth in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3-5mm, and then spread the glass fiber cloth on the slurry mixture, and repeat the operation for 5 Second, a layered composite member consisting of 6 layers of fiberglass braids with a paste-like mixture in between.

Embodiment 3: Take by weight: 45 parts of magnesium chloride, pulverized and mixed with 40 parts of water, 10 parts of dilute sulfuric acid with a concentration of 7% by weight, 90 parts of light magnesium oxide and 0.8 part of zinc stearate, all pulverized to 75 μm Next, 40 parts of talcum powder, 1 part of cellulose, 1.8 parts of urea-formaldehyde resin, 0.4 part of resin, 0.46 parts of methyl ethyl ketone peroxide, 0.25 parts of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials uniformly to obtain a slurry mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 4-6mm, and then spread the glass fiber braid layer on the slurry mixture, and so on. 2 times to form a layered composite member consisting of 3 layers of glass fiber braids and a paste-like mixture between them.

Embodiment 4: Take by weight: 48 parts of magnesium chloride, pulverized and mixed with 45 parts of water, 10 parts of dilute sulfuric acid with a concentration of 10% by weight, 80 parts of light magnesium oxide and 0.9 part of zinc stearate, all pulverized to 180 μm Next, 45 parts of talcum powder, 1.5 parts of cellulose, 1.5 parts of urea-formaldehyde resin, 0.25 parts of oxalic acid, and 2 parts of waterproof powder are mixed uniformly to obtain a slurry mixture.

Take glass fiber filaments and lay them in the mold with a thickness of 1-2mm. Apply the above-mentioned slurry mixture evenly on the glass fiber braid, control the thickness of the brushing at 3-4mm, and then spread glass fibers on the slurry mixture. The braid layer is repeated five times, and then pressurized and solidified with a mold to form a layered composite member consisting of 6 layers of glass fiber braids and the slurry-like mixture between them.

Embodiment 5: Take by weight: 42 parts of magnesium chloride, pulverized and mixed with 50 parts of water, 15 parts of dilute sulfuric acid with a concentration of 8% by weight, 80 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 180 μm Next, mix with 40 parts of talcum powder, 1 part of cellulose, 2.5 parts of unsaturated polyester resin, 0.5 part of methyl ethyl ketone peroxide, 0.2 part of oxalic acid, and 1.5 parts of waterproof powder to obtain a slurry mixture.

Take the glass fiber cloth and lay it in the shaft pipe mold, paint the above slurry mixture evenly on the glass fiber braid, and then spread the glass fiber braid layer on the slurry mixture, control the thickness of the brushing at 5mm, and repeat the operation 5 times to form the prefabricated shaft well pipe.

Embodiment 6: Take by weight: 44 parts of magnesium chloride, pulverized and mixed with 35 parts of water, 17 parts of dilute sulfuric acid with a concentration of 6% by weight, 90 parts of light magnesium oxide and 0.8 part of zinc stearate, all pulverized to 75 μm Next, with 30 parts of talcum powder, 1.2 parts of cellulose, 2.2 parts of urea-formaldehyde resin, 0.5 part of resin, 50.5 parts of methyl ethyl ketone peroxide, 0.25 parts of oxalic acid, 1.8 parts of waterproof powder, mix the above raw materials uniformly to obtain a slurry mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 10mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 4 times. , constitutes a layered composite member of a glass fiber braid and a slurry mixture.

Embodiment 7: Take by weight: 46 parts of magnesium chloride, pulverized and mixed with 40 parts of water, 15 parts of dilute sulfuric acid with a concentration of 5% by weight, 95 parts of light magnesium oxide and 0.95 part of zinc stearate, all pulverized to 38 μm Below, 30 parts of granite stone powder, 1.5 parts of cellulose, 1.5 parts of unsaturated polyester resin, 0.6 part of resin, 0.5 part of methyl ethyl ketone peroxide, 0.3 part of oxalic acid, 1.5 parts of waterproof powder, and the above raw materials Mix evenly to obtain a slurry mixture.

Lay the glass fiber filaments in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 10mm, and then spread the glass fiber braid layer on the slurry mixture, and the adjacent glass fiber The silk lines are criss-crossed, and this operation is repeated 4 times to form a layered composite material member of a glass fiber braid and a slurry mixture.

Embodiment 8: Take by weight: 48 parts of magnesium chloride, pulverized and mixed with 30 parts of water, 8 parts of dilute sulfuric acid with a concentration of 9% by weight, 100 parts of light magnesium oxide and 0.7 part of zinc stearate, all pulverized to 44 μm Below, 40 parts of granite stone powder with particle size below 44 μm, 1.5 parts of cellulose, 2 parts of urea-formaldehyde resin, 0.45 parts of resin, 0.48 parts of methyl ethyl ketone peroxide, 0.22 parts of oxalic acid, 1.7 parts of waterproof powder, mix the above raw materials evenly to get a slurry mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 4-5mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation. 5 times to form a layered composite member of a fiberglass braid layer with a paste-like mixture therebetween.

Embodiment 9: Take by weight: 50 parts of magnesium chloride, pulverized and mixed with 30 parts of water, 12 parts of dilute sulfuric acid with a concentration of 7% by weight, 100 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 44 μm Below, 50 parts of granite stone powder below 44 μm, 1.4 parts of cellulose, 1.5 parts of unsaturated polyester resin, 0.45 parts of resin, 0.45 parts of methyl ethyl ketone peroxide, 0.25 parts of oxalic acid, 2 parts of waterproof powder, mix the above raw materials evenly to obtain Paste mixture.

Take the glass fiber cloth and lay it on the flat plate, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 5mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 4 times. , a layered composite board that constitutes a glass fiber braid and paste mixture.

Example 10: Take by weight: 45 parts of magnesium chloride, pulverized and mixed with 40 parts of water, 10 parts of dilute sulfuric acid with a concentration of 11% by weight, 100 parts of light magnesium oxide and 0.7 part of zinc stearate, all pulverized to 38 μm Below, 30 parts of granite stone powder below 44 μm, 0.8 parts of cellulose, 2.5 parts of unsaturated polyester resin, 0.55 parts of resin, 0.47 parts of methyl ethyl ketone peroxide, 0.28 parts of oxalic acid, 1.8 parts of waterproof powder, mix the above raw materials evenly to obtain Paste mixture.

Take the glass fiber cloth and lay it on the flat plate, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3-5mm, and then spread the glass fiber braid layer on the slurry mixture, and so on repeatedly. 5 times, press and solidify before complete solidification to form a layered composite material board of a glass fiber braid and slurry mixture.

Example 11: Take by weight: 50 parts of magnesium chloride, pulverized and mixed with 50 parts of water, 15 parts of dilute sulfuric acid with a concentration of 10% by weight, 100 parts of light magnesium oxide and 0.8 part of zinc stearate, all pulverized to 74 μm Below, 40 parts of granite stone powder below 74 μm, 1 part of cellulose, 2 parts of unsaturated polyester resin, 0.5 part of resin, 50.5 parts of methyl ethyl ketone peroxide, 0.3 part of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials evenly to obtain Paste mixture.

Take the glass fiber cloth and lay it on the flat plate, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3-4mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation for 8 Second, pressurize to 1MPa to solidify before completely solidifying to form a layered composite material board of a glass fiber braid and slurry mixture.

Embodiment 12: Take by weight: 45 parts of magnesium chloride, crushed to below 1mm and mixed with 30 parts of water, 8 parts of dilute sulfuric acid with a concentration of 10% by weight, 100 parts of light magnesium oxide and 0.9 part of zinc stearate, all Grinding to below 44 μm, 50 parts of talc powder, 1.5 parts of cellulose, 2 parts of urea-formaldehyde resin, 0.45 parts of resin, 0.45 parts of methyl ethyl ketone peroxide, 0.25 parts of oxalic acid, 1.6 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Lay glass fiber filaments on a flat plate with a thickness of 1mm, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, and control the thickness of the brushing at 3mm, and then spread a glass fiber braid layer on the slurry mixture, Adjacent glass fiber threads are criss-crossed, and this operation is repeated 4 times. Before the last layer of glass fiber braid is laid and the slurry mixture is completely solidified, it is pressurized to 5MPa to form a glass fiber braid and slurry mixture. layered composite panels.

Embodiment 13: Take by weight: 50 parts of magnesium chloride, pulverized and mixed with 30 parts of water, 5 to 17 parts of dilute sulfuric acid with a concentration of 5 to 12% by weight, 80 parts of light magnesium oxide and 1.0 part of zinc stearate, All crushed to below 38 μm, 35 parts of granite stone powder below 38 μm, 1 part of cellulose, 2.5 parts of urea-formaldehyde resin, 0.6 part of resin, 0.48 parts of methyl ethyl ketone peroxide, 0.28 parts of oxalic acid, 1.8 parts of waterproof powder, mix the above raw materials evenly A slurry mixture was obtained.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 10mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 4 times. , constitutes a layered composite member of a glass fiber braid and a slurry mixture.

Example 14: Take by weight: 45 parts of magnesium chloride, pulverized and mixed with 50 parts of water, 10 parts of dilute sulfuric acid with a concentration of 5% by weight, 100 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 180 μm Next, 40 parts of talcum powder, 1 part of cellulose, 2 parts of urea-formaldehyde resin, 0.5 part of resin, 50.5 parts of methyl ethyl ketone peroxide, 0.2 parts of oxalic acid, 2 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 5 times. , constitute a layered composite member of a glass fiber braid and a slurry mixture.

Example 15: Take by weight: 45 parts of magnesium chloride, pulverized and mixed with 45 parts of water, 15 parts of dilute sulfuric acid with a concentration of 10% by weight, 100 parts of light magnesium oxide and 0.8 part of zinc stearate, all pulverized to 38 μm Below, with 50 parts of talcum powder, 1.5 parts of cellulose, 1.5 parts of unsaturated polyester resin, 0.3 parts of resin, 0.5 parts of methyl ethyl ketone peroxide, 0.2 parts of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials evenly to get a slurry mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 4mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 4 times. , constitutes a layered composite member of a glass fiber braid and a slurry mixture.

Example 16: Take by weight: 40 parts of magnesium chloride, pulverized and mixed with 50 parts of water, 10 parts of dilute sulfuric acid with a concentration of 12% by weight, 95 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 25 μm Below, 40 parts of granite stone powder below 25 μm, 1.5 parts of cellulose, 1.5 parts of unsaturated polyester resin, 0.6 parts of resin, 0.45 parts of methyl ethyl ketone peroxide, 0.3 parts of oxalic acid, 2 parts of waterproof powder, mix the above raw materials evenly to obtain Paste mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 6 times. , constitutes a layered composite member of a glass fiber braid and a slurry mixture.

Example 17: Take by weight: 40 parts of magnesium chloride, pulverized and mixed with 45 parts of water, 15 parts of dilute sulfuric acid with a concentration of 5% by weight, 80 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 18 μm Below, 30 parts of granite stone powder below 18 μm, 0.75 parts of cellulose, 1.5 parts of unsaturated polyester resin, 0.3 parts of resin, 0.5 parts of methyl ethyl ketone peroxide, 0.2 parts of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials evenly to obtain Paste mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 5mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation twice. , constitutes a layered composite member of a glass fiber braid and a slurry mixture.

Example 18: Take by weight: 48 parts of magnesium chloride, pulverized and mixed with 35 parts of water, 10 parts of dilute sulfuric acid with a concentration of 12% by weight, 85 parts of light magnesium oxide and 0.8 part of zinc stearate, all pulverized to 25 μm Below, 40 parts of granite stone powder below 25 μm, 1.2 parts of cellulose, 2.2 parts of urea-formaldehyde resin, 0.5 part of resin, 0.45 parts of methyl ethyl ketone peroxide, 0.27 parts of oxalic acid, 1.75 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid. Press to 5MPa to solidify to form a layered composite member of a glass fiber braid and slurry mixture.

Example 19: Take by weight: 45 parts of magnesium chloride, pulverized and mixed with 30 parts of water, 15 parts of dilute sulfuric acid with a concentration of 6% by weight, 100 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 149 μm Below, 35 parts of granite stone powder below 149 μm, 1 part of cellulose, 1.8 parts of urea-formaldehyde resin, 0.6 part of resin, 0.5 part of methyl ethyl ketone peroxide, 0.2 part of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 20mm, and then spread the glass fiber braid layer on the slurry mixture, and add it before it is completely solidified. Press to 3MPa to solidify to form a layered composite member of a glass fiber braid and slurry mixture.

Example 20: Take by weight: 50 parts of magnesium chloride, pulverized and mixed with 50 parts of water, 17 parts of dilute sulfuric acid with a concentration of 5% by weight, 80 parts of light magnesium oxide and 0.7 part of zinc stearate, all pulverized to 180 μm Below, 45 parts of granite stone powder below 180 μm, 1.5 parts of cellulose, 2.5 parts of unsaturated polyester resin, 0.6 parts of resin, 0.45 parts of methyl ethyl ketone peroxide, 0.2 parts of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials evenly to obtain slurry shape mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid. Press to 3MPa to solidify to form a layered composite member of a glass fiber braid and slurry mixture.

Example 21: Take by weight: 44 parts of magnesium chloride, pulverized and mixed with 45 parts of water, 15 parts of dilute sulfuric acid with a concentration of 8% by weight, 100 parts of light magnesium oxide and 0.7 part of zinc stearate, all pulverized to 180 μm Below, 40 parts of talcum powder, 1.25 parts of cellulose, 2.25 parts of unsaturated polyester resin, 0.35 parts of resin, 0.49 parts of methyl ethyl ketone peroxide, 0.28 parts of oxalic acid, 1.8 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 10mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation once , pressurized to 3MPa solidified before complete solidification, constituting a layered composite member of glass fiber braid and slurry mixture.

Example 22: Take by weight: 46 parts of magnesium chloride, pulverized and mixed with 40 parts of water, 15 parts of dilute sulfuric acid with a concentration of 12% by weight, 100 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 150 μm Below, 50 parts of talcum powder, 1.1 parts of cellulose, 2.1 parts of unsaturated polyester resin, 0.4 parts of resin, 0.47 parts of methyl ethyl ketone peroxide, 0.26 parts of oxalic acid, 1.7 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 7mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation once , pressurized to 5MPa solidified before complete solidification to form a layered composite member of a glass fiber braid and slurry mixture.

Example 23: Take by weight: 45 parts of magnesium chloride, pulverized and mixed with 35 parts of water, 15 parts of dilute sulfuric acid with a concentration of 9% by weight, 100 parts of light magnesium oxide and 0.8 part of zinc stearate, all pulverized to 108 μm Below, 40 parts of talcum powder, 1.5 parts of cellulose, 2.4 parts of unsaturated polyester resin, 0.45 parts of resin, 0.45 parts of methyl ethyl ketone peroxide, 0.25 parts of oxalic acid, 1.7 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 5mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 4 times. , pressurized to 10MPa before complete solidification to form a layered composite member of a glass fiber braid and slurry mixture.

Example 24: Take by weight: 40 parts of magnesium chloride, pulverized and mixed with 50 parts of water, 17 parts of dilute sulfuric acid with a concentration of 5% by weight, 100 parts of light magnesium oxide and 1.0 part of zinc stearate, all pulverized to 100 μm Below, 50 parts of talcum powder, 1.0 part of cellulose, 2.0 parts of unsaturated polyester resin, 0.5 part of resin, 0.5 part of methyl ethyl ketone peroxide, 0.25 part of oxalic acid, 1.6 parts of waterproof powder, mix the above raw materials evenly to obtain a slurry mixture .

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 5mm, and then spread the glass fiber braid layer on the slurry mixture, and repeat the operation 3 times. , pressurized to 8MPa before complete solidification to form a layered composite member of glass fiber braid and slurry mixture.

Example 25: Take by weight: 40 parts of magnesium chloride, crushed to below 1 mm and mixed with 50 parts of water, 15 parts of dilute sulfuric acid with a concentration of 10% by weight, 100 parts of light magnesium oxide and 0.85 part of zinc stearate, all Grinding to below 44 μm, 40 parts of talcum powder, 1.8 parts of cellulose, 2 parts of urea-formaldehyde resin, 0.5 part of resin, 0.5 part of methyl ethyl ketone peroxide, 0.28 part of oxalic acid, 1.75 parts of waterproof powder, mix the above raw materials evenly to obtain slurry shape mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3mm, and then lay a glass fiber layer on the slurry mixture, and then coat the glass fiber layer. Apply the slurry mixture layer evenly, repeat this operation 5 times and the adjacent glass fiber filaments are criss-crossed, cover the last layer of slurry mixture with a layer of glass fiber cloth, and pressurize until the slurry mixture is completely solidified. 5MPa solid, constitutes a layered composite member of a glass fiber braid and paste mixture.

Example 26: Take by weight: 42 parts of magnesium chloride, crushed to below 1mm and mixed with 50 parts of water, 17 parts of dilute sulfuric acid with a concentration of 8% by weight, 100 parts of light magnesium oxide and 0.75 parts of zinc stearate, all Grinding to below 38 μm, 40 parts of talcum powder, 1.8 parts of cellulose, 2 parts of urea-formaldehyde resin, 0.6 part of resin, 0.5 part of methyl ethyl ketone peroxide, 0.25 part of oxalic acid, 1.5 parts of waterproof powder, mix the above raw materials evenly to obtain slurry shape mixture.

Take the glass fiber cloth and lay it in the mold, and evenly brush the above-mentioned slurry mixture on the glass fiber braid, the thickness of the brushing is controlled at 3mm, and then lay a glass fiber layer on the slurry mixture, and then coat the glass fiber layer. Apply the paste mixture layer evenly, repeat the operation 3 times and the adjacent glass fiber filaments are criss-crossed, cover the last layer of paste mixture with a layer of glass fiber cloth, and pressurize until the paste mixture is completely solidified. 5MPa solid, constitutes a layered composite member of a glass fiber braid and paste mixture.

Claims (1)

1. A high-strength composite plate or profile for construction, characterized in that it is mainly produced through the following processes: Take 40-50 parts of magnesium chloride by weight, pulverize and mix with 30-50 parts of water, 5-17 parts of dilute sulfuric acid with a concentration of 5-12% by weight, 80-100 parts of light magnesium oxide, 0.7 parts of zinc stearate ～1.0 parts, 20～50 parts of granite stone powder, 0.75～1.5 parts of cellulose, 1.5～2.5 parts of resin are mixed uniformly to obtain a slurry mixture; The light magnesium oxide and zinc stearate are pulverized to below 180 μm, and the resin is one of urea-formaldehyde resin or unsaturated polyester resin; Take the glass fiber braid and lay it in the mold, evenly brush the above slurry mixture on the glass fiber braid, and then spread the glass fiber braid layer on the slurry mixture, and repeat this process to form at least two layers of glass fiber braid a layered composite material with a paste-like mixture therebetween; The glass fiber braid is glass fiber cloth or glass fiber filament; One or more of the following is added by weight to the slurry mixture: 0.3-0.6 parts resin, 0.45-0.5 parts methyl ethyl ketone peroxide, 0.2-0.3 parts oxalic acid, 1.5-2 parts waterproof powder; The granite stone powder is less than 75 μm; The glass fiber filaments are laid in a criss-cross pattern.