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Waterproof self-cleaning GRC (glass fiber reinforced concrete) product and preparation method thereof

A self-cleaning, water-permeable technology, applied to ceramic products, household utensils, and other household utensils, can solve the problems of reducing the service life of protective coatings, damaging the appearance of GRC, and not easily receiving light, so as to improve photocatalytic efficiency and increase Durability and aesthetics, the effect of preventing decomposition

Inactive Publication Date: 2016-06-15
NANJING BEILIDA NEW MATERIAL SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional GRC is coated with a layer of photocatalyst or photocatalyst-organic resin composite coating on the surface to protect GRC. The photocatalyst with single-layer construction is easy to enter the interior of the porous cement material, which is not easy to receive light, and the photocatalytic efficiency is relatively low. Low; the organic coating in the photocatalytic-organic resin composite coating is broken by ultraviolet rays, resulting in poor durability, and due to its hydrophobic properties, rainwater with pollutants will form traces (rain marks) on the surface , seriously damaged the appearance of GRC; the composite coating of photocatalytic coating and organic coating has photocatalytic degradation effect on the organic coating due to photocatalysis, which directly reduces the service life of the protective coating

Method used

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  • Waterproof self-cleaning GRC (glass fiber reinforced concrete) product and preparation method thereof
  • Waterproof self-cleaning GRC (glass fiber reinforced concrete) product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Preparation of waterproof decorative surface layer mixed with GRC

[0057] 20kg of cement, 3kg of siloxane, 60kg of sand, 2kg of PVA fiber, 5kg of powdered pigment, 0.5kg of redispersible latex powder, 0.2kg of water reducing agent naphthalenesulfonate formaldehyde condensate, 0.2kg of antifreeze calcium chloride, Mix 0.1kg of early-strength agent sulfate, 1kg of metakaolin and 8kg of water, mix well, and make a surface layer mortar, use the spray method to prepare a GRC-doped waterproof decorative surface layer, and naturally cure for 10 minutes;

[0058] (2) GRC structural layer composite

[0059]Cement 50kg, water 10kg, quartz sand 25kg, metakaolin 4kg, glass fiber 3kg, PVA fiber 2kg, redispersible latex powder 4kg, water reducing agent naphthalenesulfonate formaldehyde condensate 1kg, antifreeze agent calcium chloride 0.5kg and Mix 0.5kg of early strength agent sulfate, stir evenly to make GRC structural layer slurry, spray it into the prepared GRC internal wat...

Embodiment 2

[0065] (1) Preparation of waterproof decorative surface layer mixed with GRC

[0066] Cement 45kg, epoxy resin 1kg, fine stone 25kg, PU fiber 0.5kg, liquid pigment 0.5kg, polypropylene emulsion 3kg, water reducer sulfonated melamine formaldehyde condensate 1kg, early strength agent nitrite 0.5kg, thickener Mix 0.5kg of hydroxypropyl methylcellulose, 6kg of fly ash and 17kg of water, stir evenly to make a surface layer mortar, use the brushing method to prepare a GRC-doped waterproof decorative surface layer, and naturally cure for 20 minutes;

[0067] (2) GRC structural layer composite

[0068] Cement 23kg, water 18kg, quartz sand 48kg, fly ash 5kg, PP fiber 2kg, PU fiber 1kg, polypropylene emulsion 2kg, water reducer sulfonated melamine formaldehyde condensate 0.5kg, early strength agent nitrite 0.2kg, Thickener hydroxypropyl methylcellulose 0.3kg mixed, stirred evenly to make GRC structural layer slurry, vibrating poured into the prepared GRC waterproof decorative surface l...

Embodiment 3

[0074] (1) Preparation of waterproof decorative surface layer mixed with GRC

[0075] Mix 28kg of cement, 2kg of acrylic polymer, 40kg of glass crumbs, 1kg of PP fiber, 2kg of powdered pigment, 2kg of styrene-acrylic emulsion, 0.5kg of water-reducing agent polycarboxylic acid, 0.3kg of early strength agent triethanolamine, thickener hydroxyl Mix 0.2kg of ethyl cellulose, 4kg of mineral powder and 20kg of water, stir evenly to make a surface layer mortar, use the laying vibration method to prepare a GRC-doped waterproof decorative surface layer, and naturally cure for 40 minutes;

[0076] (2) GRC structural layer composite

[0077] 38kg of cement, 15.5kg of water, 35kg of quartz sand, 10kg of mineral powder, 0.5kg of steel fiber, 0.5kg of styrene-acrylic emulsion, 0.2kg of water reducing agent polycarboxylic acid, 0.2kg of early strength agent triethanolamine, thickener hydroxyethyl Mix 0.1kg of cellulose, stir evenly to make a slurry for the GRC structural layer, spray it int...

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Abstract

The invention relates to a building external wall decorative product, in particular to a waterproof self-cleaning GRC (glass fiber reinforced concrete) product.The waterproof self-cleaning GRC product comprises a self-cleaning coating (1), a GRC internally-doped waterproof decoration finish layer (2) and a GRC structural layer (3).The waterproof self-cleaning GRC product has the advantages that a hydrophobic protective agent is added into a GRC finish material and is distributed in voids produced after cement hydration reaction, so that moisture entering is prevented effectively; since the finish layer is applied with the contamination-resistant self-cleaning coating based on a waterborne inorganic binder, GRC has the waterproof, contamination-resistant and self-cleaning functions, the organic coating is prevented from being decomposed by a photocatalyst, and service life of the GRC is prolonged; the waterproof self-cleaning GRC product is simple in technology and high in economic and environmental benefits, thereby achieving high added-value resource utilization.

Description

technical field [0001] The invention relates to a building exterior wall decoration product, which has water seepage resistance and self-cleaning functions. Background technique [0002] GRC-glass fiber reinforced cement, with porosity, cement hydration product Ca(OH) 2 As moisture migrates to the surface, the surface interacts with CO 2 The reaction produces white CaCO 3 , commonly known as pan-alkali; at the same time, with the volatilization of moisture on the surface of GRC, cracks and micro-cracks are prone to occur; moisture entering the interior of GRC will corrode GRC, destroy its structure, and affect its life; therefore, GRC needs to prevent the infiltration of moisture To destroy its performance, the traditional GRC sprays a layer of organic coating on the surface to play a waterproof role, but the organic material is exposed to wind and sun, and its durability is poor. [0003] As a building decoration material, GRC is favored by architectural designers for it...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B28/00C04B41/50C04B111/27
CPCC04B28/00C04B41/505C04B2111/2069C04B2111/27C04B14/06C04B14/106C04B14/42C04B16/0641C04B2103/0068C04B24/226C04B22/124C04B22/142C04B38/00C04B24/42C04B2103/54C04B41/5041C04B41/5024C04B41/5015C04B41/4539
Inventor 熊吉如王猛方寅生
Owner NANJING BEILIDA NEW MATERIAL SYST ENG
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