CN109354664B - Heat-preservation and heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material - Google Patents
Heat-preservation and heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material, which is prepared by adopting a chemical plating method to prepare copper-plated glass fiber, taking the copper-plated glass fiber as a reinforcing material and a root-blocking agent, taking bi-component polyurethane containing isocyanate and polyalcohol as a matrix, and forming the root-puncture-resistant waterproof composite material by adopting vacuum infusion and injection molding processes. The foamed polyurethane root-penetration-resistant waterproof composite material prepared by the method disclosed by the invention is good in root penetration resistance and waterproof effect, has a heat-insulating function, and can effectively solve the problems that the existing planted roof waterproof root-blocking layer and heat-insulating layer are complex in multilayer preparation process, poor in interlayer interface performance and the like; the surface copper plating mode is adopted, so that the consumption of noble metal copper is greatly reduced, and the production cost is saved; the integration with the planting roof base layer can be realized by adopting the modes of vacuum infusion and injection molding, and meanwhile, the polyurethane can be cured and molded at normal temperature and naturally foamed, and the method has the advantages of energy conservation, environmental protection and greenness.
Description
Technical Field
The invention belongs to the field of waterproof material preparation, and particularly relates to a heat-preservation and heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material.
Background
The development of green planting roofs is one of effective ways for relieving the urban heat island effect and protecting the urban ecological environment, the green planting roof engineering is composed of planting, waterproofing, drainage, heat preservation and insulation and other comprehensive technologies, the roofing waterproofing technology is particularly important, and once leakage occurs, great economic loss can be caused. The root puncture-resistant waterproof material is a high-efficiency waterproof material which inhibits the root system from further growing to the waterproof layer and avoids destroying the waterproof layer, the plant root system in the planted roof system has extremely strong penetrability, and if the root puncture-resistant waterproof material is selected improperly, the root puncture-resistant waterproof material can be penetrated by plant roots to cause leakage of buildings.
The asphalt root-resistant waterproof coiled material is one of the waterproof materials with larger use amount at present, and the problems existing at present are as follows: firstly, the asphalt root-resistant waterproof roll is limited by certain length and width, so that overlapping is inevitable during use, and plant roots easily penetrate through gaps at the overlapping part, so that the gaps at the overlapping part become weak links of a waterproof system; secondly, the asphalt root-resistant waterproof coiled material is often welded by a hot-melting method in construction, so that the defects of complex process and high energy consumption of the hot-melting method exist, the coiled material is carbonized due to excessive hot-melting welding, the strength and the cohesiveness are reduced, when a chemical root-resisting agent is used, the chemical root-resisting agent added in the coiled material is easily decomposed at high temperature, the integral root-resisting performance is poor or invalid, and if the time is too short, the joint is formed into a virtual weld; thirdly, the copper base of the asphalt root-resistant waterproof roll is mainly copper foil, the mechanical property and the ductility of the asphalt root-resistant waterproof roll are poor, a tire body is easy to bulge and break when meeting a corner during construction, and the internal corner part is difficult to treat; in addition, copper belongs to noble metals and is high in price, and the copper foil is used as a base, so that the using amount of copper metal is increased, and the cost is increased. In addition, the existing planted roof adopts a waterproof root-resistant layer and a heat-insulating layer to be combined for use so as to achieve the purpose of various functions, and has the defects of complex process, poor interface performance between layers and the like.
CN108276925A discloses a novel nano-alloy root-resistant composite coiled material and a preparation method thereof, wherein the coiled material sequentially comprises a composite nano-alloy heat-insulating layer, an asphalt-based waterproof layer and a covering layer from top to bottom; the composite nano alloy heat insulation layer is a matrix, and the composite nano alloy heat insulation layer is a polyolefin nano alloy heat insulation layer; the asphalt-based waterproof layer consists of rubber polymer and asphalt base material; the preparation method comprises the steps of preparation of a heat insulation layer, preparation and dip coating of an asphalt-based waterproof layer, sticking of a film and the like.
Disclosure of Invention
The invention aims to provide a heat-preservation and heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material which can be cured and molded at normal temperature and has the functions of heat preservation and insulation, root puncture resistance and water resistance.
The invention aims to realize that the heat-preservation heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material is prepared by the following specific steps:
1) placing glass fiber cloth or glass fiber bundles in deoiling liquid for deoiling for 30min at 40 ℃, placing the treated glass fiber cloth or glass fiber bundles in 10wt% of dilute sulfuric acid, and neutralizing surface alkali liquor;
the deoiling liquid is as follows: 60g/L of sodium hydroxide, 30g/L of sodium carbonate and 15g/L of sodium phosphate;
2) placing the glass fiber cloth or glass fiber bundle subjected to oil removal and neutralization in the step 1) into a sensitizing solution, sensitizing for 10min at 25 ℃, and repeatedly rinsing with clear water;
the sensitizing solution is as follows: mixed solution of stannous chloride 10g/L and hydrochloric acid 40 ml/L; the percentage concentration of the hydrochloric acid is 38%;
3) placing the glass fiber cloth or glass fiber bundle sensitized in the step 2) into an activating solution, activating for 10min at 25 ℃, and then enabling Pd in the solution2+The ions are converted into metal Pd particles which are then placed in sodium hypophosphite with the concentration of 10g/L for activationChanging for 10min to reduce the Pd on the surface2+；
The activating solution is as follows: mixed solution of 0.5g/L palladium chloride and 20ml/L hydrochloric acid; the percentage concentration of the hydrochloric acid is 38%;
4) adjusting the pH value of the copper plating solution to 9-11 by using ammonia water, placing the glass fiber cloth or glass fiber bundle activated in the step 3) into the copper plating solution for copper plating, and drying to obtain copper-plated glass fiber cloth or glass fiber bundle;
the copper plating solution comprises: 30-50g/L of copper sulfate, 20-40g/L of sodium hypophosphite, 50-70g/L of sodium citrate, 40-60g/L of ammonium chloride and 2-6mg/L of thiourea;
the copper plating temperature is 75-90 ℃, and the copper plating time is 10-30 min;
5) uniformly stirring 100 parts by mass of polyether polyol and 87.3 parts by mass of toluene diisocyanate to obtain a polyurethane resin matrix;
6) the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material is formed by the following steps:
A. laying the copper-plated glass fiber cloth, the demolding cloth, the flow guide net, the flow guide pipe, the rubber inlet pipe and the vacuum bag obtained in the step 4) on a roof in sequence, sealing the vacuum bag by using a sealant, and vacuumizing until the pressure in the vacuum bag is-0.1 MPa; connecting the polyurethane resin matrix prepared in the step 5) with a rubber inlet pipe in a vacuum bag, introducing the polyurethane resin into the vacuum bag in a vacuum manner, infiltrating the copper-plated glass fiber cloth in the vacuum bag, after the infiltration process is finished, performing cross-linking reaction on two components in the polyurethane resin and naturally foaming, and removing the flow guide net, the flow guide pipe and the vacuum bag by using demolding cloth; the heat-preservation heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material integrated with the roof is obtained;
B. spraying the polyurethane resin prepared in the step 5) to the surface of a roof by using a spray gun of a spray forming machine, cutting the copper-plated glass fiber bundle obtained in the step 4) into short copper-plated glass fiber bundles by using a fiber chopping device, and spraying the short copper-plated glass fiber bundles by using another spray gun; and mixing the sprayed short copper-plated glass fiber bundles with polyurethane resin, compacting by using a roller to enable the polyurethane resin to fully infiltrate the short copper-plated glass fibers, and performing cross-linking reaction and natural foaming on two components in the polyurethane to obtain the heat-insulating foamed polyurethane root-penetration-resistant waterproof composite material integrated with the roof.
The invention has the following beneficial effects:
1. the foamed polyurethane matrix in the foamed polyurethane root-penetration-resistant waterproof composite material is of a hard foam structure and has an extremely low heat conduction coefficient, so that the foamed polyurethane root-penetration-resistant waterproof composite material has an excellent heat preservation and insulation function and a good root-penetration-resistant waterproof function effect, and can effectively solve the problems of complex preparation process, poor interlayer interface performance and the like of the existing planted roof waterproof root-blocking layer and heat preservation and insulation layer multilayer.
2. Compared with the copper foil used as a base, the copper-plated glass fiber used as a reinforcing material and a root-resisting agent has the advantages that the usage amount of noble metal copper is greatly reduced by a surface copper plating mode, and the production cost is saved;
3. by adopting vacuum infusion and spray forming processes, the waterproof layer and the planted roof base layer can be integrated, weak points such as lap joints when root-resistant asphalt coiled materials are used for laying are avoided, polyurethane can be cured and formed at normal temperature and can be foamed naturally, and the method has the advantages of energy conservation, environmental protection and greenness.
Detailed Description
The invention puts the glass fiber into degreasing liquid to degrease, neutralize; sensitizing in sensitizing solution, and repeatedly rinsing with clear water; activating in activating solution, adjusting pH value of copper plating solution with ammonia water, and placing in copper plating solution for copper plating. Preparing polyurethane resin; the copper-plated glass fiber is used as a reinforcing material and a root-resistant agent, and the polyurethane resin is used as a matrix to form the heat-insulating, heat-insulating and foamed polyurethane root-puncture-resistant waterproof composite material through vacuum infusion and injection molding processes.
The present invention is described in detail below with reference to specific examples.
Example 1
1) Arranging the glass fiber in deoiling liquid for deoiling for 30min at 40 ℃, and arranging the treated glass fiber in 10wt% of dilute sulfuric acid to neutralize surface alkali liquor;
the formula of the deoiling liquid is as follows: 60g/L of sodium hydroxide, 30g/L of sodium carbonate and 15g/L of sodium phosphate;
2) sensitizing the glass fiber subjected to oil removal and neutralization in the step 1) in a sensitizing solution for 10min at 25 ℃, and repeatedly rinsing with clear water;
the sensitizing solution is as follows: mixed solution of stannous chloride 10g/L and hydrochloric acid 40 ml/L; the percentage concentration of hydrochloric acid was 38%.
3) Arranging the glass fiber sensitized in the step 2) in an activating solution, activating for 10min at 25 ℃, and enabling Pd in the solution2+The ions are converted into metal Pd particles, and then the metal Pd particles are placed in sodium hypophosphite containing 10g/L for 10min to reduce the Pd on the surface2+；
The activating solution is as follows: mixed solution of 0.5g/L palladium chloride and 20ml/L hydrochloric acid; the percentage concentration of hydrochloric acid was 38%.
4) Adjusting the pH value of the plating solution to 9 by using ammonia water, arranging the glass fiber activated in the step 3) in a copper plating solution, plating copper for 10min at 75 ℃, and drying to obtain copper-plated glass fiber cloth;
the copper plating solution comprises: 30g/L of copper sulfate, 20g/L of sodium hypophosphite, 50g/L of sodium citrate, 40g/L of ammonium chloride and 2mg/L of thiourea;
5) uniformly mechanically stirring 100 parts by mass of polyether polyol of Bayer polyurethane Co., Ltd and 87.3 parts by mass of toluene diisocyanate to obtain a polyurethane resin matrix;
6) forming the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material:
laying the copper-plated glass fiber cloth, the demolding cloth, the flow guide net, the flow guide pipe, the rubber inlet pipe and the vacuum bag obtained in the step 4) on a roof in sequence, sealing the vacuum bag by using a sealant, and vacuumizing until the pressure in the vacuum bag is-0.1 MPa; connecting the polyurethane resin matrix prepared in the step 5) with a rubber inlet pipe in a vacuum bag, introducing the polyurethane resin into the vacuum bag in a vacuum manner, infiltrating the copper-plated glass fiber cloth in the vacuum bag, after the infiltration process is finished, performing cross-linking reaction on two components in the polyurethane resin and naturally foaming, and removing the flow guide net, the flow guide pipe and the vacuum bag by using demolding cloth; the heat-preservation heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material integrated with the roof is obtained.
Example 2, the same as example 1, except that,
1) the glass fiber bundle is placed in deoiling liquid to be deoiled for 30min at the temperature of 40 ℃, and the treated glass fiber bundle is placed in 10wt% of dilute sulfuric acid to neutralize surface alkali liquor;
4) adjusting the pH value of the plating solution to 10 by using ammonia water, placing the glass fiber bundle activated in the step 3) into a copper plating solution, plating copper for 20min at 80 ℃, and drying to obtain a copper-plated glass fiber bundle;
the copper plating solution comprises: 40g/L of copper sulfate, 30g/L of sodium hypophosphite, 60g/L of sodium citrate, 50g/L of ammonium chloride and 5mg/L of thiourea;
6) forming the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material:
firstly, preparing a glass fiber felt by a glass fiber bundle through a wet papermaking method, wherein the glass fiber felt prepared by the glass fiber bundle through the wet papermaking method comprises the following specific steps:
cutting the copper-plated glass fiber bundle obtained in the step 4) into a short copper-plated glass fiber bundle of 6 cm;
secondly, short copper-plated glass fiber bundles cut in the first step are placed in aqueous dispersion containing adhesive polyvinyl alcohol to be dispersed in a fiber dissociator at the dispersion speed of 3000rpm for 1 min;
the addition amount of the polyvinyl alcohol is 6% of the mass of the short copper-plated glass fiber bundle;
the solid-liquid ratio of the aqueous dispersion of polyvinyl alcohol is 1: 10;
pouring the short copper-plated glass fiber bundle suspension obtained in the step two onto a copper mesh of a paper machine for papermaking, draining water from the dispersion through the copper mesh, and performing suction filtration for 1min to obtain a copper-plated glass fiber felt;
and fourthly, taking out the copper-plated glass fiber mat obtained in the third step, placing the copper-plated glass fiber mat in a vacuum drying device carried by a former, and drying the copper-plated glass fiber mat for 15min at the temperature of 100 ℃ to obtain the copper-plated glass fiber mat, wherein the vacuum degree is-0.1 MPa.
The obtained copper-plated glass fiber mat, the release cloth, the flow guide net, the flow guide pipe, the rubber inlet pipe and the vacuum bag are laid on the roof in sequence, then the vacuum bag is sealed by using a sealant, and the follow-up process is the same as the example 1.
Example 3, the same as example 1, except that,
1) the glass fiber bundle is placed in deoiling liquid to be deoiled for 30min at the temperature of 40 ℃, and the treated glass fiber bundle is placed in 10wt% of dilute sulfuric acid to neutralize surface alkali liquor;
4) adjusting the pH value of the plating solution to 11 by using ammonia water, placing the glass fiber bundle activated in the step 3) into a copper plating solution, plating copper for 30min at 90 ℃, and drying to obtain a copper-plated glass fiber bundle;
the copper plating solution comprises: 50g/L of copper sulfate, 40g/L of sodium hypophosphite, 70g/L of sodium citrate, 60g/L of ammonium chloride and 6mg/L of thiourea;
6) forming the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material:
spraying the polyurethane resin prepared in the step 5) to the surface of a roof by using a spray gun of a spray forming machine, cutting the copper-plated glass fiber bundle obtained in the step 4) into short copper-plated glass fiber bundles by using a fiber chopping device, and spraying the short copper-plated glass fiber bundles by using another spray gun; and mixing the sprayed short copper-plated glass fiber bundles with polyurethane resin, compacting by using a roller to enable the polyurethane resin to fully infiltrate the short copper-plated glass fiber bundles, and performing cross-linking reaction and natural foaming on two components in the polyurethane to obtain the heat-insulating foamed polyurethane root-penetration-resistant waterproof composite material integrated with the roof.
Example 4, the same as example 1, except that,
1) the glass fiber bundle is placed in deoiling liquid to be deoiled for 30min at the temperature of 40 ℃, and the treated glass fiber bundle is placed in 10wt% of dilute sulfuric acid to neutralize surface alkali liquor;
4) adjusting the pH value of the plating solution to 10 by using ammonia water, placing the glass fiber bundle activated in the step 3) into a copper plating solution, plating copper for 25min at 85 ℃, and drying to obtain a copper-plated glass fiber bundle;
the copper plating solution comprises: 35g/L of copper sulfate, 25g/L of sodium hypophosphite, 65g/L of sodium citrate, 58g/L of ammonium chloride and 3mg/L of thiourea;
6) forming the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material:
spraying the polyurethane resin prepared in the step 5) to the surface of a roof by using a spray gun of a spray forming machine, cutting the copper-plated glass fiber bundle obtained in the step 4) into short copper-plated glass fiber bundles by using a fiber chopping device, and spraying the short copper-plated glass fiber bundles by using another spray gun; and mixing the sprayed short copper-plated glass fiber bundles with polyurethane resin, compacting by using a roller to enable the polyurethane resin to fully infiltrate the short copper-plated glass fibers, and performing cross-linking reaction and natural foaming on two components in the polyurethane to obtain the heat-insulating foamed polyurethane root-penetration-resistant waterproof composite material integrated with the roof.
Example 5, the same as example 1, except that,
1) placing the glass fiber bundle in deoiling liquid to deoil for 30min at 40 ℃, and placing the treated glass fiber in 10wt% of dilute sulfuric acid to neutralize surface alkali liquor;
4) adjusting the pH value of the plating solution to 10 by using ammonia water, placing the glass fiber bundle activated in the step 3) into a copper plating solution, plating copper for 25min at 85 ℃, and drying to obtain a copper-plated glass fiber bundle;
the copper plating solution comprises: 45g/L of copper sulfate, 35g/L of sodium hypophosphite, 55g/L of sodium citrate, 55g/L of ammonium chloride and 5mg/L of thiourea;
6) forming the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material:
spraying the polyurethane resin prepared in the step 5) to the surface of a roof by using a spray gun of a spray forming machine, cutting the copper-plated glass fiber bundle obtained in the step 4) into short copper-plated glass fiber bundles by using a fiber chopping device, and spraying the short copper-plated glass fiber bundles by using another spray gun; and mixing the sprayed short copper-plated glass fiber bundles with polyurethane resin, compacting by using a roller to enable the polyurethane resin to fully infiltrate the short copper-plated glass fiber bundles, and performing cross-linking reaction and natural foaming on two components in the polyurethane to obtain the heat-insulating foamed polyurethane root-penetration-resistant waterproof composite material integrated with the roof.
Example 6, the same as example 1, except that,
1) the glass fiber bundle is placed in deoiling liquid to be deoiled for 30min at the temperature of 40 ℃, and the treated glass fiber bundle is placed in 10wt% of dilute sulfuric acid to neutralize surface alkali liquor;
4) adjusting the pH value of the plating solution to 11 by using ammonia water, placing the glass fiber bundle activated in the step 3) into a copper plating solution, plating copper for 25min at 85 ℃, and drying to obtain a copper-plated glass fiber bundle;
the copper plating solution comprises: 42g/L of copper sulfate, 28g/L of sodium hypophosphite, 62g/L of sodium citrate, 48g/L of ammonium chloride and 4mg/L of thiourea;
6) forming the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material:
spraying the polyurethane resin prepared in the step 5) to the surface of a roof by using a spray gun of a spray forming machine, cutting the copper-plated glass fiber bundle obtained in the step 4) into short copper-plated glass fiber bundles by using a fiber chopping device, and spraying the short copper-plated glass fiber bundles by using another spray gun; and mixing the sprayed short copper-plated glass fiber bundles with polyurethane resin, compacting by using a roller to enable the polyurethane resin to fully infiltrate the short copper-plated glass fiber bundles, and performing cross-linking reaction and natural foaming on two components in the polyurethane to obtain the heat-insulating foamed polyurethane root-penetration-resistant waterproof composite material integrated with the roof.
The applicant performs performance tests on the heat-preservation heat-insulation foamed polyurethane root-penetration-resistant waterproof composite material obtained in each embodiment according to national standards GB/T10297-2015, GB/T328.10-2007 and industrial standards JC/T1075-2008, and the test results of the embodiments 1-6 are shown in the following table.
As can be seen from the table, the invention has low heat conductivity, good heat preservation and insulation, water impermeability and good root penetration resistance.
Claims (3)
1. The utility model provides a heat preservation thermal-insulated foaming polyurethane is able to bear or endure root puncture waterproof combined material which characterized in that: the preparation method comprises the following specific steps:
1) placing glass fiber cloth or glass fiber bundles in deoiling liquid for deoiling for 30min at 40 ℃, placing the treated glass fiber cloth or glass fiber bundles in 10wt% of dilute sulfuric acid, and neutralizing surface alkali liquor;
the deoiling liquid is as follows: 60g/L of sodium hydroxide, 30g/L of sodium carbonate and 15g/L of sodium phosphate;
2) placing the glass fiber cloth or glass fiber bundle subjected to oil removal and neutralization in the step 1) into a sensitizing solution, sensitizing for 10min at 25 ℃, and repeatedly rinsing with clear water;
the sensitizing solution is as follows: mixed solution of stannous chloride 10g/L and hydrochloric acid 40 ml/L; the percentage concentration of the hydrochloric acid is 38%;
3) placing the glass fiber cloth or glass fiber bundle sensitized in the step 2) into an activating solution, activating for 10min at 25 ℃, and then enabling Pd in the solution2+The ions are converted into metal Pd particles, and then the metal Pd particles are placed in sodium hypophosphite containing 10g/L for activation for 10min to reduce the Pd on the surface2+；
The activating solution is as follows: mixed solution of 0.5g/L palladium chloride and 20ml/L hydrochloric acid; the percentage concentration of the hydrochloric acid is 38%;
4) adjusting the pH value of the copper plating solution to 9-11 by using ammonia water, placing the glass fiber cloth or glass fiber bundle activated in the step 3) into the copper plating solution for copper plating, and drying to obtain copper-plated glass fiber cloth or glass fiber bundle;
the copper plating solution comprises: 30-50g/L of copper sulfate, 20-40g/L of sodium hypophosphite, 50-70g/L of sodium citrate, 40-60g/L of ammonium chloride and 2-6mg/L of thiourea;
the copper plating temperature is 75-90 ℃, and the copper plating time is 10-30 min;
5) uniformly stirring 100 parts by mass of polyether polyol and 87.3 parts by mass of toluene diisocyanate to obtain a polyurethane resin matrix;
6) the heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material is formed by the following steps:
A. laying the copper-plated glass fiber cloth, the demolding cloth, the flow guide net, the flow guide pipe, the rubber inlet pipe and the vacuum bag obtained in the step 4) on a roof in sequence, sealing the vacuum bag by using a sealant, and vacuumizing until the pressure in the vacuum bag is-0.1 MPa; connecting the polyurethane resin matrix prepared in the step 5) with a rubber inlet pipe in a vacuum bag, introducing the polyurethane resin into the vacuum bag in a vacuum manner, infiltrating the copper-plated glass fiber cloth in the vacuum bag, after the infiltration process is finished, performing cross-linking reaction on two components in the polyurethane resin and naturally foaming, and removing the flow guide net, the flow guide pipe and the vacuum bag by using demolding cloth; the heat-preservation heat-insulation foamed polyurethane root-puncture-resistant waterproof composite material integrated with the roof is obtained;
B. spraying the polyurethane resin prepared in the step 5) to the surface of a roof by using a spray gun of a spray forming machine, cutting the copper-plated glass fiber bundle obtained in the step 4) into short copper-plated glass fiber bundles by using a fiber chopping device, and spraying the short copper-plated glass fiber bundles by using another spray gun; and mixing the sprayed short copper-plated glass fiber bundles with polyurethane resin, compacting by using a roller to enable the polyurethane resin to fully infiltrate the short copper-plated glass fiber bundles, and performing cross-linking reaction and natural foaming on two components in the polyurethane to obtain the heat-insulating foamed polyurethane root-penetration-resistant waterproof composite material integrated with the roof.
2. The heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material as claimed in claim 1, wherein: and 4) preparing the copper-plated glass fiber felt from the copper-plated glass fiber bundle obtained in the step 4) by a wet papermaking method.
3. The heat-insulating foamed polyurethane root-puncture-resistant waterproof composite material as claimed in claim 2, wherein: the method for preparing the copper-plated glass fiber felt by the copper-plated glass fiber bundle wet papermaking method comprises the following specific steps:
cutting the copper-plated glass fiber bundle obtained in the step 4) into a short copper-plated glass fiber bundle of 6 cm;
secondly, placing the short copper-plated glass fiber bundle in a water dispersion liquid containing a binder polyvinyl alcohol, and defibering and dispersing in a fiber dissociator at the dispersion speed of 3000rpm for 1 min;
the addition amount of the polyvinyl alcohol is 6% of the mass of the copper-plated glass fiber bundle;
the solid-liquid ratio of the aqueous dispersion of polyvinyl alcohol =1: 10;
pouring the short copper-plated glass fiber bundle suspension obtained in the step two onto a copper mesh of a paper machine for papermaking, draining water from the dispersion through the copper mesh, and performing suction filtration for 1min to obtain a copper-plated glass fiber felt;
and fourthly, taking out the copper-plated glass fiber mat obtained in the third step, placing the copper-plated glass fiber mat in a vacuum drying device carried by a former, and drying the copper-plated glass fiber mat for 15min at the temperature of 100 ℃ to obtain the copper-plated glass fiber mat with the vacuum degree of-0.1 Mpa.
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|---|---|---|---|---|
| CN117285885B (en) * | 2023-11-20 | 2024-02-13 | 锦绣防水科技有限公司 | Waterproof and heat-insulating coiled material for roof and preparation method thereof |
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| CN109354664A (en) | 2019-02-19 |
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