CN115304330B - Energy-saving heat-insulating material and building structure convenient to assemble - Google Patents

Energy-saving heat-insulating material and building structure convenient to assemble Download PDF

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Publication number
CN115304330B
CN115304330B CN202210985618.2A CN202210985618A CN115304330B CN 115304330 B CN115304330 B CN 115304330B CN 202210985618 A CN202210985618 A CN 202210985618A CN 115304330 B CN115304330 B CN 115304330B
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water
expanded polystyrene
heat
repellent
heat insulation
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CN115304330A (en
Inventor
任阳
任维登
任复河
任国强
任启滨
任超
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Laiwu Fangyuan Construction Group Co ltd
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Laiwu Fangyuan Construction Group Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/06—Macromolecular compounds fibrous
    • C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B16/0683—Polyesters, e.g. polylactides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/0048—Fibrous materials
    • C04B20/0056—Hollow or porous fibres
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641—Polyacrylates; Polymethacrylates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
    • E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/65—Water proofers or repellants
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/90—Passive houses; Double facade technology

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)

Abstract

The application relates to an energy-saving heat-insulating material and a building structure convenient to assemble, wherein the energy-saving heat-insulating material comprises the following raw materials in parts by weight: 14-30 parts of lightweight aggregate; 75-95 parts of gel material; 40-45 parts of reinforcing fiber; 5 to 5.4 portions of water-repellent filler; 5-12 parts of adhesive filler; the water-repellent filler comprises a resin gel and a water-repellent modifier, wherein the resin gel and the water-repellent modifier (46-48): (4-6); the water repellent modifier comprises polydopamine and 1-propanethiol. The utility model provides a building structure convenient to assemble includes inflation polyphenyl board and heat preservation material, the polylith inflation polyphenyl board is pasted on the building outer wall, heat preservation material coats on the lateral wall that heat preservation material deviates from the building outer wall, polylith inflation polyphenyl board grafting cooperation. The heat insulation material has the effect of reducing the heat insulation effect reduction rate of the heat insulation material.

Description

Energy-saving heat-insulating material and building structure convenient to assemble
Technical Field
The application relates to the field of building heat preservation materials, in particular to an energy-saving heat preservation material and a building structure convenient to assemble.
Background
The building energy-saving heat-insulating material is an important component of building materials, and the property of the building energy-saving heat-insulating material belongs to functional materials in the building materials, so that the building energy-saving heat-insulating material is adopted for buildings and structures, the heat-insulating performance of the buildings is improved, and the energy sources are saved.
In the related art, the energy-saving heat-insulating building structure comprises the expanded polystyrene board and the anti-cracking mortar coated on the outer surface of the expanded polystyrene board, wherein the expanded polystyrene board is adhered to the outer wall of the building to play a role in heat insulation and energy saving, the anti-cracking mortar blocks the external environment and the expanded polystyrene board, the probability of corrosion of ultraviolet rays, wind, rain and the like on the expanded polystyrene board is reduced, and the durability of the energy-saving heat-insulating building material is improved.
In rainy seasons in summer, rainwater, accumulated water discharged above a building and the like are easy to infiltrate into a building structure, and the heat preservation effect of the expanded polystyrene board of the building structure is poor after the expanded polystyrene board absorbs water, so that the heat preservation effect of the heat preservation material is reduced.
Disclosure of Invention
In order to reduce the probability of thermal insulation effect reduction of thermal insulation materials, the application provides an energy-saving thermal insulation material and a building structure convenient to assemble.
In a first aspect, the present application provides an energy-saving thermal insulation material, which adopts the following technical scheme:
the energy-saving heat-insulating material comprises the following raw materials in parts by weight: 14-30 parts of lightweight aggregate; 75-95 parts of gel material; 40-45 parts of reinforcing fiber; 5 to 5.4 portions of water-repellent filler; 5-12 parts of adhesive filler; the water-repellent filler comprises a resin gel and a water-repellent modifier, wherein the resin gel and the water-repellent modifier (46-48): (4-6); the water repellent modifier comprises polydopamine and 1-propanethiol.
By adopting the technical scheme, the resin gel is uniformly dispersed in the heat-insulating material, and the resin gel adheres to the lightweight aggregate, so that the adhesive strength of the heat-insulating material is improved; the polydopamine in the water repellent modifier reacts with the sulfhydryl in the 1-propanethiol to form a covalent bond, the sulfhydryl is grafted on the polydopamine surface, and then the polydopamine with the sulfhydryl reacts with the resin gel, so that the water repellency of the resin gel is improved, the resin gel after water repellency modification forms a solidified reticular hydrophobic film in the heat insulation material, the hydrophobicity of the heat insulation material is improved, rainwater, ponding and the like are not easy to permeate into the heat insulation material, and the expanded polystyrene board in the heat insulation material is not easy to absorb water, so that the probability of reducing the heat insulation effect of the heat insulation material is reduced.
Optionally, the resin gel comprises phenolic epoxy acrylate, trimethylolpropane triacrylate and a photoinitiator, wherein the weight ratio of the phenolic epoxy acrylate to the trimethylolpropane triacrylate to the photoinitiator is (13-15): 32:1.
by adopting the technical scheme, under the action of ultraviolet rays, the photoinitiator absorbs light energy to form free radicals, and the phenolic epoxy acrylate forms a crosslinked reticular structure under the action of the trimethylolpropane triacrylate, the photoinitiator and the free radicals, so that the bonding strength and the self-tightness of the heat insulation material are improved, and rainwater, water accumulation and the like are not easy to permeate into the heat insulation material; when the rainwater contacts with phenolic epoxy acrylate in the thermal insulation material, epoxy groups of the phenolic epoxy acrylate react with mercapto groups on the surface of polydopamine under the action of the acidic materials, and epoxy groups are opened to form a macromolecular crosslinked network structure, so that the viscosity of the water-repellent filler is improved, the bonding strength of the water-repellent filler and the lightweight aggregate, the reinforcing fiber and the gel material is improved, the water-repellent filler is not easy to be corroded by water to peel off each other, the lightweight aggregate and the like are wrapped by the water-repellent filler, the hydrophobicity of the lightweight aggregate, the reinforcing fiber and the gel material is improved, the rainwater is not easy to permeate into the thermal insulation material, and the probability of reducing the thermal insulation effect of the thermal insulation material is reduced.
Optionally, the preparation steps of the water repellent modifier are as follows: mixing Tris-base buffer solution with ethanol, adding dopamine hydrochloride, regulating pH to 8.5 with hydrochloric acid, stirring at 35 ℃ for 3 hours, and standing to obtain polydopamine; adding 1-propanethiol, and stirring for 9 hours at 35 ℃ to obtain the water-repellent modifier.
By adopting the technical scheme, the preparation process of the polydopamine is simple, the obtained water-repellent modifier has stable performance, and the bonding efficiency of the water-repellent modifier and the resin gel is high.
Optionally, the adhesive comprises redispersible emulsion powder and ethylene-vinyl acetate copolymer emulsion, wherein the weight ratio of the redispersible emulsion powder to the ethylene-vinyl acetate copolymer emulsion is (4-18): 3.
by adopting the technical scheme, the redispersible emulsion powder and the ethylene-vinyl acetate copolymer emulsion are matched for use, so that the bonding strength of the heat insulation material and the expanded polystyrene board is improved; the dispersion emulsion improves the hydrophobicity of the adhesive, and rainwater is not easy to permeate into the heat insulation material; the ethylene-vinyl acetate copolymer emulsion improves the weather resistance of the heat-insulating material, so that the heat-insulating material is not easy to age under the actions of illumination, wind and rain and the like, and the protection aging of the heat-insulating material on the expanded polystyrene board is improved, thereby reducing the probability of reducing the heat-insulating effect of the heat-insulating material.
Optionally, the adhesive comprises redispersible emulsion powder, ethylene-vinyl acetate copolymer emulsion and styrene, wherein the weight ratio of the redispersible emulsion powder to the ethylene-vinyl acetate copolymer emulsion to the styrene is (4-18): 3:3.
by adopting the technical scheme, the styrene is contacted with the expanded polystyrene board, so that the surface of the expanded polystyrene board forms a sticky substance, the bonding strength of the heat insulation material and the expanded polystyrene board is improved, rainwater is not easy to infiltrate through gaps between the heat insulation material and the expanded polystyrene board, the probability of water absorption of the expanded polystyrene board is reduced, and the probability of reduction of the heat insulation effect of the heat insulation material is further reduced.
Optionally, the reinforcing fiber is a four-hole polyester fiber.
By adopting the technical scheme, the four-hole polyester fiber is adhered with the lightweight aggregate, the gel material and the like to prevent the thermal insulation material from expanding and contracting in volume, so that the probability of forming cracks on the thermal insulation material is reduced, rainwater and the like are not easy to permeate into the thermal insulation material through the cracks, the probability of absorbing water of the expanded polystyrene board is reduced, and the probability of reducing the thermal insulation effect of the thermal insulation material is further reduced; the four-hole polyester fiber has large porosity and is convenient for storing air, thereby improving the heat preservation efficiency of the heat preservation material.
Optionally, the lightweight aggregate comprises expanded perlite and glass beads, wherein the weight ratio of the expanded perlite to the glass beads is (4-5): 2.
by adopting the technical scheme, the expanded perlite and the glass beads are matched for use, so that the weight of the heat insulation material is reduced, and the use safety of the heat insulation material is improved; the honeycomb structure of the expanded perlite improves the air content of the heat insulation material, thereby enhancing the heat insulation effect of the heat insulation material; the glass beads reduce the low thermal coefficient of the heat insulation material, so that the heat insulation effect of the heat insulation material is enhanced; the hydrophobicity of the glass beads reduces the probability of rainwater penetrating into the heat insulation material.
In a second aspect, the present application provides a building structure convenient for assembly, which adopts the following technical scheme:
the building structure convenient to assemble comprises an expanded polystyrene board and heat insulation materials, wherein the expanded polystyrene board is arranged in parallel with an outer wall of a building, a plurality of expanded polystyrene boards are adhered to the outer wall of the building, and the heat insulation materials are coated on the side wall of the heat insulation materials, which is away from the outer wall of the building; and two adjacent expanded polystyrene boards are in plug-in fit.
By adopting the technical scheme, the adjacent expanded polystyrene boards are spliced and matched, the splicing is simple, the multiple expanded polystyrene boards are adhered to the outer wall of the building after being connected with each other, the multiple expanded polystyrene boards are not easy to separate in a staggered manner, and the installation stability of the building structure is improved; the heat insulation material blocks the external environment and the expanded polystyrene board, reduces the probability of corrosion of ultraviolet rays, wind, rain and the like to the expanded polystyrene board, and improves the durability of the building energy-saving heat insulation material; the heat-insulating material has good rainwater permeation resistance effect and good water repellency effect, and the bonding strength of the heat-insulating material and the expanded polystyrene board is high, so that the probability of erosion of the expanded polystyrene board by rainwater is further reduced, and the probability of reduction of the heat-insulating effect of the heat-insulating material is further reduced.
Optionally, the expanded polystyrene board includes plate body and concatenation subassembly, the accepting groove has been seted up on the vertical lateral wall of plate body and building outer wall vertically, concatenation subassembly is including being used for with the accepting groove grafting complex grafting post of adjacent plate body, grafting post sets up on the vertical lateral wall of plate body and building outer wall vertically another, grafting post is rotatable in accepting the groove.
By adopting the technical scheme, one expanded polystyrene board is adhered to the building outer wall, the other expanded polystyrene board is taken, the spliced pole connected with the spliced pole is inserted into the receiving groove of the adhered and fixed expanded polystyrene board, the side wall of the expanded polystyrene board, which is close to the building outer wall, is coated with glue, the unfixed expanded polystyrene board is rotated until the side wall of the expanded polystyrene board, which faces the building outer wall, is abutted to the building outer wall, and the spliced pole and the spliced groove play a role in positioning, so that the splicing of the building structure is facilitated.
Optionally, the lateral wall that the plate body was fixed with the spliced pole has seted up the spliced groove, splice assembly still includes and is used for with spliced groove joint complex joint ball, joint ball and the lateral wall fixed connection of plate body.
By adopting the technical scheme, when the unfixed expanded polystyrene board rotates to be abutted with the building outer wall, the inserting groove is clamped with the clamping ball, so that the fixing stability of two adjacent expanded polystyrene boards is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the polydopamine in the water repellent modifier reacts with the sulfhydryl in the 1-propanethiol to form a covalent bond, the sulfhydryl is grafted on the surface of polydopamine, and then the polydopamine with the sulfhydryl reacts with the resin gel, so that the water repellency of the resin gel is improved, the resin gel after water repellency modification forms a solidified reticular hydrophobic film in the heat insulation material, the hydrophobicity of the heat insulation material is improved, rainwater, ponding and the like are not easy to permeate into the heat insulation material, and the expanded polystyrene board in the heat insulation material is not easy to absorb water, so that the probability of reducing the heat insulation effect of the heat insulation material is reduced;
2. under the action of ultraviolet rays, the photoinitiator absorbs light energy to form free radicals, and the phenolic epoxy acrylate forms a crosslinked network structure under the action of trimethylolpropane triacrylate, the photoinitiator and the free radicals, so that the bonding strength and self-tightness of the heat insulation material are improved, rainwater, ponding and the like are not easy to infiltrate into the heat insulation material, and the probability of reducing the heat insulation effect of the heat insulation material is reduced;
3. when the rainwater and the phenolic epoxy acrylate in the thermal insulation material are contacted, epoxy groups of the phenolic epoxy acrylate react with mercapto groups on the surface of polydopamine under the action of the acidic materials, and the epoxy groups are opened to form a macromolecular crosslinked network structure, so that the viscosity of the water-repellent filler is improved, the bonding strength of the water-repellent filler, the lightweight aggregate, the reinforcing fiber and the gel material is improved, the hydrophobicity of the lightweight aggregate, the reinforcing fiber and the gel material is improved, the rainwater is not easy to permeate into the thermal insulation material, and the probability of reducing the thermal insulation effect of the thermal insulation material is reduced;
4. styrene contacts with the expanded polystyrene board to enable the surface of the expanded polystyrene board to have viscous substances, so that the bonding strength of the heat insulation material and the expanded polystyrene board is improved, rainwater is not easy to infiltrate through gaps between the heat insulation material and the expanded polystyrene board, the probability of water absorption of the expanded polystyrene board is reduced, and the probability of reduction of the heat insulation effect of the heat insulation material is further reduced;
5. the four-hole polyester fiber is adhered with lightweight aggregate, gel material and the like to prevent the thermal insulation material from volume expansion and contraction, so that the probability of forming cracks on the thermal insulation material is reduced, rainwater and the like are not easy to infiltrate into the thermal insulation material through the cracks, the probability of absorbing water of the expanded polystyrene board is reduced, and the probability of reducing the thermal insulation effect of the thermal insulation material is further reduced; the four-hole polyester fiber has high porosity and is convenient for storing air, thereby improving the heat preservation efficiency of the heat preservation material;
6. the multiple expanded polystyrene boards are connected through the splicing component, the splicing is simple, and after the multiple expanded polystyrene boards are adhered to the outer wall of the building, the multiple expanded polystyrene boards are not easy to separate in a staggered manner due to the arrangement of the splicing component, so that the probability of forming gaps by separating the multiple expanded polystyrene boards is reduced, and the installation stability of the building structure is improved.
Drawings
FIG. 1 is a schematic installation view of a building structure in an embodiment of the present application;
FIG. 2 is an overall schematic of an expanded polystyrene board in an embodiment of the present application;
FIG. 3 is a partial cross-sectional view of an expanded polystyrene board in an embodiment of the present application;
fig. 4 is a schematic diagram of the assembly process of the expanded polystyrene board in the embodiment of the application.
Reference numerals illustrate:
1. building outer walls; 2. an expanded polystyrene board; 21. a plate body; 22. a splice assembly; 221. a receiving groove; 222. a plug-in column; 223. a clamping ball; 225. a plug-in groove; 226. an elastic rubber; 3. a thermal insulation material.
Detailed Description
The present application is described in further detail below in conjunction with examples, comparative examples and figures 1-4.
The following examples, in which the specific conditions are not specified, are conducted under conventional conditions or conditions recommended by the manufacturer, and the raw materials used in the following examples are commercially available from ordinary sources except for the specific descriptions.
The density of the expanded perlite is 2.2g/cm 3 The granularity is 50 meshes, the expansion multiple is 10, and the heat conductivity coefficient is 0.028-0.050; glass bead density 2.2g/cm 3 Particle size is 325 mesh; the cement is silicate cement; the granularity of the fly ash is 400 meshes; the fineness of the four-hole polyester fiber is 1.33dtex, and the length is 38mm; the fineness of the glass fiber is 1.33dtex, and the length is 38mm; the photoinitiator is 2,4, 6-trimethyl benzoyl diphenyl phosphine oxide; tris-base buffer was supplied by Ovis laboratory equipment, inc.
Preparation of Water repellent filler
Preparation example 1
S1, uniformly mixing 125L of Tris-base buffer solution and 3L of ethanol to obtain a base solution;
s2, adding 1kg of dopamine hydrochloride into the base solution, regulating the pH to 8.5 by using hydrochloric acid, stirring for 3 hours at 35 ℃, and standing to obtain polydopamine;
s3, adding 250mL of 1-propanethiol into the polydopamine prepared in the step S2, and stirring for 9 hours at 35 ℃ to obtain a water repellent modifier;
s4, placing 1.3kg of phenolic epoxy acrylate and 3.2kg of trimethylolpropane triacrylate into a stirrer to stir at the speed of 1000r/min for 30min, then adding 0.1kg of 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide, and stirring for 10min to obtain resin gel;
s5, taking 0.4kg of the water-repellent modifier prepared by the step S3 and the resin gel prepared by the step S4, putting into a stirrer, stirring for 30min at the temperature of 35 ℃ at 300r/min, taking out the mixed material, and carrying out ultrasonic treatment for 10min to obtain the water-repellent filler.
Preparation example 2
S1, uniformly mixing 125L of Tris-base buffer solution and 3L of ethanol to obtain a base solution;
s2, adding 1kg of dopamine hydrochloride into the base solution, regulating the pH to 8.5 by using hydrochloric acid, stirring for 3 hours at 35 ℃, and standing to obtain polydopamine;
s3, adding 250mL of 1-propanethiol into the polydopamine prepared in the step S2, and stirring for 9 hours at 35 ℃ to obtain a water repellent modifier;
s4, placing 1.4kg of phenolic epoxy acrylate and 3.2kg of trimethylolpropane triacrylate into a stirrer to stir at the speed of 1000r/min for 30min, then adding 0.1kg of 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide, and stirring for 10min to obtain resin gel;
s5, taking 0.5kg of the water-repellent modifier prepared by the step S3 and the resin gel prepared by the step S4, putting into a stirrer, stirring for 30min at the temperature of 35 ℃ at 300r/min, taking out the mixed material, and carrying out ultrasonic treatment for 10min to obtain the water-repellent filler.
Preparation example 3
S1, uniformly mixing 125L of Tris-base buffer solution and 3L of ethanol to obtain a base solution;
s2, adding 1kg of dopamine hydrochloride into the base solution, regulating the pH to 8.5 by using hydrochloric acid, stirring for 3 hours at 35 ℃, and standing to obtain polydopamine;
s3, adding 250mL of 1-propanethiol into the polydopamine prepared in the step S2, and stirring for 9 hours at 35 ℃ to obtain a water repellent modifier;
s4, placing 1.5kg of phenolic epoxy acrylate and 3.2kg of trimethylolpropane triacrylate into a stirrer to stir at the speed of 1000r/min for 30min, then adding 0.1kg of 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide, and stirring for 10min to obtain resin gel;
s5, taking 0.6kg of the water-repellent modifier prepared by the step S3 and the resin gel prepared by the step S4, putting into a stirrer, stirring for 30min at the temperature of 35 ℃ at 300r/min, taking out the mixed material, and carrying out ultrasonic treatment for 10min to obtain the water-repellent filler.
Preparation example 4
The difference between this preparation and preparation 2 is: 1.3kg of novolac epoxy acrylate and 0.5kg of S2 prepared water repellent modifier were added.
Preparation example 5
The difference between this preparation and preparation 2 is: 1.3kg of novolac epoxy acrylate and 0.6kg of S2 prepared water repellent modifier were added.
Preparation example 6
The difference between this preparation and preparation 2 is: 1.4kg of novolac epoxy acrylate and 0.4kg of S2 prepared water repellent modifier were added.
Preparation example 7
The difference between this preparation and preparation 2 is: 1.4kg of novolac epoxy acrylate and 0.6kg of S2 prepared water repellent modifier were added.
Preparation example 8
The difference between this preparation and preparation 2 is: 1.5kg of novolac epoxy acrylate and 0.4kg of S2 prepared water repellent modifier were added.
Preparation example 9
The difference between this preparation and preparation 2 is: 1.5kg of novolac epoxy acrylate and 0.5kg of S2 prepared water repellent modifier were added.
Preparation example 10
The difference between this preparation and preparation 2 is: no water repellent modifier was added.
PREPARATION EXAMPLE 11
The difference between this preparation and preparation 2 is: no resin gel was added.
TABLE 1 raw materials Table of Water repellent filler (kg)
Preparation example of adhesive filler
Preparation example 12
4kg of dispersible emulsion powder, 1kg of ethylene-vinyl acetate copolymer emulsion and 1kg of styrene are uniformly mixed to be used as adhesive filler.
Preparation example 13
5kg of dispersible emulsion powder, 2kg of ethylene-vinyl acetate copolymer emulsion and 2kg of styrene are uniformly mixed to be used as adhesive filler.
PREPARATION EXAMPLE 14
6kg of dispersible emulsion powder, 3kg of ethylene-vinyl acetate copolymer emulsion and 3kg of styrene are uniformly mixed to be used as adhesive filler.
Preparation example 15
7kg of ethylene-vinyl acetate copolymer emulsion and 2kg of styrene are uniformly stirred to be used as an adhesive filler.
PREPARATION EXAMPLE 16
7kg of dispersible emulsion powder is stirred and 2kg of styrene is uniformly used as an adhesive filler.
Preparation example 17
4kg of dispersible emulsion powder and 3kg of ethylene-vinyl acetate copolymer emulsion are uniformly mixed to be used as adhesive filler.
PREPARATION EXAMPLE 18
6kg of dispersible emulsion powder and 1kg of ethylene-vinyl acetate copolymer emulsion are uniformly mixed to be used as adhesive filler.
Preparation example 19
5kg of dispersible emulsion powder, 2kg of ethylene-vinyl acetate copolymer emulsion and 1kg of styrene are uniformly mixed to be used as adhesive filler.
Preparation example 20
5kg of dispersible emulsion powder, 2kg of ethylene-vinyl acetate copolymer emulsion and 3kg of styrene are uniformly mixed to be used as adhesive filler.
TABLE 2 raw materials for adhesive filler (kg)
Redispersible emulsion powder Ethylene-vinyl acetate copolymer emulsion Styrene
Preparation example 12 4 1 1
Preparation example 13 5 2 2
PREPARATION EXAMPLE 14 6 3 3
Preparation example 15 / 7 2
PREPARATION EXAMPLE 16 7 / 2
Preparation example 17 4 3 /
PREPARATION EXAMPLE 18 6 1 /
Preparation example 19 5 2 1
Preparation example 20 5 2 3
Examples
Example 1
S1, uniformly stirring 10kg of expanded perlite, 4kg of glass beads, 40kg of cement, 35kg of fly ash and 20kg of water to obtain a primary mixed material;
s2, placing the water-repellent filler prepared in the preparation example 1 into a primary mixed material, and uniformly stirring to obtain a premix;
s3, putting 40kg of four-hole polyester fibers into the premix, and uniformly stirring to obtain reinforced slurry;
s4, placing the adhesive filler prepared in the preparation example 12 into the reinforcing slurry, and uniformly stirring to obtain the heat-insulating material.
Example 2
S1, uniformly stirring 15kg of expanded perlite, 7kg of glass beads, 35kg of cement, 30kg of fly ash and 20kg of water to obtain a primary mixed material;
s2, placing the water-repellent filler prepared in the preparation example 2 into a primary mixed material, and uniformly stirring to obtain a premix;
s3, putting 42.5kg of four-hole polyester fibers into the premix, and uniformly stirring to obtain reinforced slurry;
s4, placing the adhesive filler prepared in the preparation example 13 into the reinforcing slurry, and uniformly stirring to obtain the heat-insulating material.
Example 3
S1, uniformly stirring 20kg of expanded perlite, 10kg of glass beads, 30kg of cement, 30kg of fly ash and 20kg of water to obtain a primary mixed material;
s2, placing the water-repellent filler prepared in the preparation example 3 into a primary mixed material, and uniformly stirring to obtain a premix;
s3, putting 45kg of four-hole polyester fibers into the premix, and uniformly stirring to obtain reinforced slurry;
s4, placing the adhesive filler prepared in the preparation example 14 into the reinforcing slurry, and uniformly stirring to obtain the heat-insulating material.
Example 4
This embodiment differs from embodiment 2 in that: 40kg of four-hole polyester fiber is added.
Example 5
This embodiment differs from embodiment 2 in that: 45kg of four-hole polyester fiber is added.
Example 6
This embodiment differs from embodiment 2 in that: the water repellent filler prepared in preparation example 1 was added.
Examples 7 to 13
The difference from example 2 is that: the water repellent filler prepared in preparation examples 3 to 9 was added in this order.
Examples 14 to 20
The difference from example 2 is that: the adhesive fillers prepared in preparation examples 14 to 20 were added sequentially.
Example 21
The embodiment discloses a building structure convenient to assemble. Referring to fig. 1, the heat insulation material comprises a plurality of expanded polystyrene boards 2 and a heat insulation material 3 which is in adhesive fit with the expanded polystyrene boards 2, wherein the plurality of expanded polystyrene boards 2 are mutually spliced and adhered on the building outer wall 1, and the heat insulation material 3 is positioned on one side of the expanded polystyrene boards 2 away from the building outer wall 1 and is in adhesive fit with the expanded polystyrene boards 2.
And (3) sticking one expanded polystyrene board 2 on the building outer wall 1, splicing the adjacent expanded polystyrene boards 2 with the expanded polystyrene board 2, sticking the spliced expanded polystyrene board 2 on the building outer wall 1, and repeating the steps until all the expanded polystyrene boards 2 are stuck. The heat insulation material 3 is coated on one side of the expanded polystyrene board 2, which is far away from the building outer wall 1, and the heat insulation material 3 blocks the external environment and the expanded polystyrene board 2, so that the probability of corrosion of ultraviolet rays, wind, rain and the like on the expanded polystyrene board 2 is reduced, and the probability of reduction of the heat insulation effect of the heat insulation material 3 is reduced.
Referring to fig. 1 and 2, the expanded polystyrene board 2 includes a board body 21 and a splicing assembly 22, the board body 21 is a rectangular board vertically arranged in a length direction, a vertical side wall of the board body 21 vertical to the building outer wall 1 is provided with a receiving groove 221, the receiving groove 221 is a semi-cylindrical groove, and the receiving groove 221 is axially arranged in parallel with the length direction of the board body 21.
Referring to fig. 2 and 3, the splice assembly 22 includes a plug post 222, a snap ball 223, and a resilient rubber 226.
Referring to fig. 1 and 2, the plug-in post 222 is located on the other vertical side wall perpendicular to the building outer wall 1, and the plug-in post 222 is partially embedded in the board body 21 and fixedly connected with the board body 21, and the volume of the plug-in post 222 embedded in the board body 21 is less than half of the volume of the plug-in post 222. The plug-in posts 222 are in plug-in fit with the receiving grooves 221 of the adjacent expanded polystyrene boards 2, and the plug-in posts 222 can rotate in the circumferential direction of themselves in the receiving grooves 221.
After one expanded polystyrene board 2 is fixed on the building outer wall 1, the other expanded polystyrene board 2 is taken and the plug-in posts 222 of the other expanded polystyrene board 2 are inserted into the receiving grooves 221 of the fixed expanded polystyrene board 2, the side wall of the unfixed expanded polystyrene board 2 facing the building outer wall 1 is coated with glue, and the unfixed expanded polystyrene board 2 is rotated towards the building outer wall 1 until the unfixed expanded polystyrene board 2 is adhered on the building outer wall 1.
Referring to fig. 1, 2 and 3, a plurality of spherical insertion grooves 225 are formed in the side wall of the fixed insertion column 222, the insertion grooves 225 are located at one side of the insertion column 222 facing the building exterior wall 1, and the plurality of insertion grooves 225 are sequentially arranged along the length direction of the plate body 21. The slot opening of the insertion slot 225 faces away from the plate body 21 and the slot chord length is smaller than the diameter of the insertion slot 225. The elastic rubber 226 is fixedly connected to the wall of the insertion groove 225. The side wall provided with the receiving groove 221 is provided with a plurality of clamping balls 223 which are used for being in plug-in fit with the plug-in groove 225, the clamping balls 223 are fixedly connected with the side wall of the plate body 21 through connecting blocks, the diameter of each clamping ball 223 is larger than that of a spherical space surrounded by the elastic rubber 226, and the diameter of each clamping ball is smaller than the chord length of the notch of the plug-in groove 225.
Referring to fig. 3 and 4, when the expanded polystyrene board 2 rotates, the clamping ball 223 is abutted against the elastic rubber 226 on the adjacent expanded polystyrene board 2, and the elastic rubber 226 is extruded until the clamping ball 223 enters the inserting groove 225, at this time, the elastic rubber 226 is restored, and the clamping ball 223 is blocked from being separated from the inserting groove 225. When the click ball 223 enters the insertion groove 225, the adjacent expanded polystyrene boards 2 abut against the side walls close to each other.
In other embodiments, the top wall of the plate 21 is fixed with a plugging post 222 and provided with a plugging slot 225, and the bottom wall of the plate 21 is fixed with a clamping ball and provided with a receiving slot 221, so as to facilitate the splicing of the upper and lower expanded polystyrene boards 2.
The implementation principle of the embodiment is as follows:
one expanded polystyrene board 2 is adhered to the building outer wall 1, the other expanded polystyrene board 2 is taken, the plug-in posts 222 connected with the other expanded polystyrene board 2 are inserted into the receiving grooves 221 of the expanded polystyrene boards 2 which are adhered and fixed, the unfixed expanded polystyrene boards 2 are rotated, the clamping balls on the fixed expanded polystyrene boards 2 are inserted into the plug-in grooves 225 of the fixed expanded polystyrene boards 2 until the expanded polystyrene boards 2 are abutted against the building outer wall 1 towards the side wall of the building outer wall 1, and at the moment, the side walls of the adjacent two expanded polystyrene boards 2 are abutted against each other.
Comparative example
Comparative example 1
The difference from example 2 is that: four-hole polyester fiber is not added.
Comparative example 2
The difference from example 2 is that: no four-hole polyester fiber is added, and 42.5kg of glass fiber is added.
Comparative example 3
The difference from example 2 is that: no water repellent filler was added.
Comparative examples 4 to 5
The difference from example 2 is that: the water repellent filler prepared in preparation examples 10 to 11 was used in this order.
Comparative example 6
The difference from example 2 is that: no adhesive filler was added.
Table 3 raw materials Table (kg) of examples and comparative examples
Performance test
Test method
1. The thermal conductivity of the building structure was measured by the method of GB/T10294 method for measuring steady-state thermal resistance and related characteristics of heat insulating materials, and the test results are shown in Table 4.
2. The tensile bonding strength (MPa) between the thermal insulation material and the expanded polystyrene board is measured by adopting the method of ' A.8.2 plastering material and thermal insulation material tensile bonding strength ' in the method of JGJ144-2004 external thermal insulation engineering technical specification appendix A external thermal insulation system and its component material performance test method ', and the test results are shown in Table 4 in detail.
3. The method of ' A.6 system water absorption test method ' in JGJ144-2004 external wall external heat insulation engineering technical regulation annex A external wall external heat insulation system and its constituent material performance test method ' is adopted to test the water absorption of the building structure, and for the convenience of test, the two sides of the expanded polystyrene board are coated with heat insulation materials; then adopting an A.2 system weather resistance test method: 1EPS sheet thin plastering system and netless cast-in-place system test "to treat a building structure, then measuring the water absorption of the treated building structure, calculating the water absorption change rate (%) using the following formula:
the test results are shown in Table 4.
Table 4 table of test results for each of examples and comparative examples
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It can be seen from the combination of examples 1, 2 and 3 and the combination of table 4 that the tensile bonding strength of the building structure is improved and the thermal conductivity and the water absorption rate of the building structure are reduced by adjusting the addition amounts and types of the expanded perlite, the glass beads, the cement, the fly ash, the water, the four-hole polyester fiber, the water-repellent filler and the adhesive filler.
It can be seen from the combination of example 2 and comparative example 1 and the combination of table 4 that the addition of the four-hole polyester fiber reduces the thermal conductivity of the building structure, and the change rate of the water absorption of the building structure is reduced after the weather resistance test. Four-hole polyester fiber adhesion lightweight aggregate, gel material and the like are used for preventing the thermal insulation material from volume expansion and contraction, so that the probability of forming cracks on the thermal insulation material is reduced, moisture is not easy to infiltrate into the thermal insulation material through the cracks, the probability of absorbing water of an expanded polystyrene board is reduced, and the water absorption change rate of a building structure is reduced. The four-hole polyester fiber has large porosity and is convenient for storing air, thereby reducing the heat conductivity coefficient of the building structure.
It can be seen by combining example 2 and comparative example 2 and table 4 that the addition of the four-hole polyester fiber reduced the thermal conductivity and the water absorption rate of the building structure compared to the glass fiber.
As can be seen from the combination of example 2, example 4 and example 5 and the combination of table 4, as the amount of the four-hole polyester fiber added increases, the thermal conductivity of the building structure decreases and then increases, and the tensile bonding strength of the thermal insulation material and the expanded polystyrene board increases and then decreases. The reason for the increase of the heat conductivity coefficient of the building results is that the content of gel materials in the heat insulation material is reduced along with the increase of the addition amount of the four-hole polyester fibers, the pores in the heat insulation material are increased, the convection of hot air is facilitated, and the heat conductivity coefficient of the building structure is increased.
It can be seen from the combination of example 2 and comparative example 3 and the combination of table 4 that the addition of the water-repellent filler reduces the water absorption change rate of the building structure and improves the tensile bond strength of the heat insulating material and the expanded polystyrene board. The water-repellent filler comprises resin gel and a water-repellent modifier, wherein the resin gel comprises phenolic epoxy acrylate, trimethylolpropane triacrylate and 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide, and the water-repellent modifier comprises polydopamine and 1-propanethiol. The poly-dopamine reacts with sulfhydryl in 1-propanethiol to form a covalent bond, the sulfhydryl is grafted on the surface of the poly-dopamine to form a super-hydrophobic surface, and then the poly-dopamine grafted with the sulfhydryl is fixed on the resin gel. Under the action of ultraviolet rays, the 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide forms free radicals after absorbing light energy, the phenolic epoxy acrylate forms a crosslinked reticular structure under the action of trimethylolpropane triacrylate and 2,4, 6-trimethylbenzoyl diphenyl phosphine oxide and the free radicals, and meanwhile, under the action of polydopamine grafted with sulfhydryl, the density of the crosslinked reticular structure is increased and the crosslinked reticular structure has hydrophobicity, so that the bonding strength, self-tightness and hydrophobicity of the heat insulation material are improved, moisture is not easy to permeate into the heat insulation material, the water absorption rate of the building structure is reduced, the heat insulation material and the expanded polystyrene board in the building structure, and the lightweight aggregate and the gel material in the heat insulation material are not easy to peel under the action of water erosion, so that the bonding strength of the heat insulation material and the expanded polystyrene board is improved, and the tensile bonding strength of the building structure is improved.
By adjusting the type of the water-repellent filler, the tensile bond strength of the building structure is improved, and the thermal conductivity and the water absorption rate of the building structure are reduced by combining example 2 and examples 6 to 13 and combining table 4.
It can be seen from the combination of example 2 and comparative example 4 and the combination of table 4 that the addition of the water-repellent modifier to the water-repellent filler reduces the water absorption rate change rate of the building structure and improves the tensile bond strength of the heat insulating material and the expanded polystyrene board. The water repellent modifier improves the hydrophobicity of the three-dimensional network structure formed by the resin gel, and moisture is not easy to pass through the heat insulation material to contact with the expanded polystyrene board, so that the water absorption change rate of the building structure is reduced. Part of the resin gel coats the light aggregate, and the water absorption capacity of the light aggregate is reduced. The erosion of moisture on the interface between the heat insulating material and the expanded polystyrene board is reduced, so that the tensile bonding strength of the building structure is improved.
As can be seen from the combination of examples 2, 10 and 11 and the table 4, the tensile bond strength of the building structure increases and decreases with increasing weight ratio of the resin gel to the water repellent modifier. The water repellent modifier improves the hydrophobicity of the resin gel, so that the hydrophobicity of the heat insulation material is improved, moisture is not easy to permeate between the heat insulation material and the expanded polystyrene board, and the tensile bonding strength of the building structure is improved. However, with the water repellent additive, the surface mercapto groups of the polydopamine in the water repellent additive consume the epoxy groups of the phenolic epoxy acrylate, so that the crosslinking degree of the phenolic epoxy acrylate in the trimethylolpropane triacrylate is reduced, and the tensile bonding strength of the building structure is reduced.
It can be seen from the combination of example 2 and comparative example 5 and the combination of table 4 that the addition of the resin gel in the water-repellent filler reduced the water absorption change rate of the building structure, and improved the tensile bond strength of the heat insulating material to the expanded polystyrene board. The resin gel improves the bonding strength between the lightweight aggregate and the four-hole polyester fiber in the heat insulation material, and improves the hydrophobicity of the heat insulation material, thereby reducing the water absorption change rate of the building structure. The corrosion probability of water to the building structure is reduced, so that the tensile bonding strength of the heat insulation material and the expanded polystyrene board is improved.
It can be seen from the combination of examples 2, 8 and 13 and the combination of Table 4 that the addition amount of the novolac epoxy acrylate was increased while the addition amount of the other substances was unchanged, and the tensile bond strength of the insulating material to the expanded polystyrene board was increased and then decreased. With the increase of the addition amount of the phenolic epoxy acrylate, part of the phenolic epoxy acrylate and the trimethylolpropane triacrylate are crosslinked into a three-dimensional network structure, and part of the phenolic epoxy acrylate and the polydopamine in the water repellent modifier react to generate a high molecular three-dimensional structure, so that the viscosity of the network structure is improved, and the tensile bonding strength of the heat insulation material and the expanded polystyrene board is improved. However, the addition of phenolic aldehyde buxine acrylic ester consumes mercapto and epoxy groups, the stability of the water-repellent filler is reduced, and the tensile bonding strength between the heat-insulating material and the expanded polystyrene board is reduced.
It can be seen from the combination of example 2 and comparative example 6 and the combination of table 4 that the addition of the adhesive filler improves the tensile bond strength between the insulation and the expanded polystyrene board. The adhesive filler comprises dispersible emulsion powder, ethylene-vinyl acetate copolymer emulsion and styrene, wherein the redispersible emulsion powder and the ethylene-vinyl acetate copolymer emulsion are adhesive substances, and the styrene is contacted with the expanded polystyrene board to form the adhesive substances on the surface of the expanded polystyrene board, so that the adhesive strength of the heat insulation material and the expanded polystyrene board is improved.
It can be seen from the combination of examples 2, 15 and 16 and the combination of Table 4 that the combination of the redispersible emulsion powder and the ethylene-vinyl acetate copolymer emulsion improves the tensile bond strength of the thermal insulation material and the expanded polystyrene board.
It can be seen from the combination of examples 2, 17 and 18 and the combination of Table 4 that the increase in styrene increases the tensile bond strength of the insulation material to the expanded polystyrene board.
It can be seen from the collection of examples 2, 19 and 20 and the collection of Table 4 that the tensile bond strength of the heat insulating material to the expanded polystyrene board increases and decreases as the amount of styrene added increases. The polystyrene increases the dissolution rate of the expanded polystyrene board, the expanded polystyrene board is eroded towards the side wall of the heat insulation material, and the stretching resistance of the expanded polystyrene board is reduced, so that the stretching bonding strength of the heat insulation material and the expanded polystyrene board is reduced.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (9)

1. The energy-saving heat-insulating material is characterized by comprising the following raw materials in parts by weight: 14-30 parts of lightweight aggregate; 75-95 parts of gel material; 40-45 parts of reinforcing fiber; 5 to 5.4 portions of water-repellent filler; 5-12 parts of adhesive filler; the water-repellent filler comprises resin gel and a water-repellent modifier, wherein the weight ratio of the resin gel to the water-repellent modifier is (46-48): (4-6); the water repellent modifier comprises polydopamine and 1-propanethiol;
the preparation method of the water repellent modifier comprises the following steps: mixing Tris-base buffer solution with ethanol, adding dopamine hydrochloride, regulating pH to 8.5 with hydrochloric acid, stirring at 35 ℃ for 3 hours, and standing to obtain polydopamine; adding 1-propanethiol, and stirring for 9 hours at 35 ℃ to obtain the water-repellent modifier.
2. The energy-saving and heat-insulating material according to claim 1, wherein the resin gel comprises phenolic epoxy acrylate, trimethylolpropane triacrylate and a photoinitiator, and the weight ratio of the phenolic epoxy acrylate, the trimethylolpropane triacrylate and the photoinitiator is (13-15): 32:1.
3. the energy-saving and heat-insulating material according to claim 2, wherein the adhesive filler comprises redispersible emulsion powder and ethylene-vinyl acetate copolymer emulsion, and the weight ratio of the redispersible emulsion powder to the ethylene-vinyl acetate copolymer emulsion is (4-18): 3.
4. the energy-saving and heat-insulating material according to claim 2, wherein the adhesive filler comprises redispersible emulsion powder, ethylene-vinyl acetate copolymer emulsion and styrene, and the weight ratio of the redispersible emulsion powder to the ethylene-vinyl acetate copolymer emulsion to the styrene is (4-18): 3:3.
5. the energy-saving and heat-insulating material according to claim 1, wherein the reinforcing fiber is a four-hole polyester fiber.
6. The energy-saving and heat-insulating material according to claim 1, wherein the lightweight aggregate comprises expanded perlite and glass beads, and the weight ratio of the expanded perlite to the glass beads is (4-5): 2.
7. the building structure convenient to assemble is characterized by comprising an expanded polystyrene board (2) and the heat insulation material (3) according to any one of claims 1-6, wherein the expanded polystyrene board (2) is arranged in parallel with the building outer wall (1), a plurality of the expanded polystyrene boards (2) are adhered to the building outer wall (1), and the heat insulation material (3) is coated on the side wall, deviating from the building outer wall (1), of the heat insulation material (3); two adjacent expanded polystyrene boards (2) are in plug-in fit.
8. The building structure convenient to assemble according to claim 7, wherein the expanded polystyrene board (2) comprises a board body (21) and a splicing assembly (22), a receiving groove (221) is formed in a vertical side wall perpendicular to the building outer wall (1) of the board body (21), the splicing assembly (22) comprises a splicing column (222) which is used for being spliced and matched with the receiving groove (221) of the adjacent board body (21), the splicing column (222) is arranged on the other vertical side wall perpendicular to the building outer wall (1) of the board body (21), and the splicing column (222) is rotatable in the receiving groove (221).
9. The building structure convenient to assemble according to claim 8, wherein the side wall of the board body (21) fixed with the plug-in column (222) is provided with a plug-in groove (225), the splicing assembly (22) further comprises a clamping ball (223) which is used for being matched with the plug-in groove (225) in a clamping manner, and the clamping ball (223) is fixedly connected with the side wall of the board body (21).
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