CN112523464A - Indoor special clean surface protection ground structure and construction method - Google Patents

Indoor special clean surface protection ground structure and construction method Download PDF

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Publication number
CN112523464A
CN112523464A CN201910874223.3A CN201910874223A CN112523464A CN 112523464 A CN112523464 A CN 112523464A CN 201910874223 A CN201910874223 A CN 201910874223A CN 112523464 A CN112523464 A CN 112523464A
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China
Prior art keywords
layer
etpu
component
buffer layer
self
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CN201910874223.3A
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Chinese (zh)
Inventor
窦万强
周夏辉
倪广真
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Dbc New Material Technology Shanghai Co ltd
Dbc Group Co ltd
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Dbc New Material Technology Shanghai Co ltd
Dbc Group Co ltd
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Priority to CN201910874223.3A priority Critical patent/CN112523464A/en
Publication of CN112523464A publication Critical patent/CN112523464A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/0215—Flooring or floor layers composed of a number of similar elements specially adapted for being adhesively fixed to an underlayer; Fastening means therefor; Fixing by means of plastics materials hardening after application
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/0215—Flooring or floor layers composed of a number of similar elements specially adapted for being adhesively fixed to an underlayer; Fastening means therefor; Fixing by means of plastics materials hardening after application
    • E04F15/02155—Adhesive means specially adapted therefor, e.g. adhesive foils or strips
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/181—Insulating layers integrally formed with the flooring or the flooring elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/185—Underlayers in the form of studded or ribbed plates

Abstract

The indoor special clean surface protective ground structure comprises a base layer paved by cement concrete or cement boards, wherein the upper part of the base layer is sequentially provided with a bottom coating, an ETPU particle buffer layer, a self-leveling layer and a PVC surface layer from bottom to top, a hole sealing layer for sealing and filling pores of ETPU particles is arranged in the ETPU particle buffer layer, and a bonding layer is arranged between the self-leveling layer and the PVC surface layer. The invention meets the requirements of wear resistance, skid resistance, flame retardance, moisture resistance, easy cleaning and antibiosis of the indoor terrace to the ground, and simultaneously fully utilizes the impact absorption performance and the energy return capability generated after the ETPU particles and the two-component polyurethane elastomer are combined, ensures that the whole structure has better shock absorption and buffering capability, and improves the protection performance of the ground. The materials adopted by the invention are all environment-friendly materials, can completely meet the chemical property complete detection of the new national standard GB36246-2018, and really realize environment protection, no toxicity, safety and durability.

Description

Indoor special clean surface protection ground structure and construction method
Technical Field
The invention relates to the field of building ground structures and construction, in particular to a protective ground structure applied to indoor ground and a matched construction method.
Background
At present, most indoor floors required by special ground environments such as schools, nursing homes, kindergartens and the like are mostly made of prefabricated PVC coiled materials, the materials are cooled and then subjected to edge cutting and coiling processes to form finished products, the PVC coiled materials have the advantages of being flat and smooth in surface, soft in floor material, elastic to a certain degree, comfortable in foot feeling and the like after being subjected to calendering treatment, and the PVC coiled material floor has the advantages of being good in elasticity, easy to lay and install, antibacterial, durable, simple and easy to maintain and the like compared with sheets.
However, it is known from the feedback of the user in the actual application process that the prefabricated PVC coiled material in the prior art also has a number of disadvantages, which are as follows:
1. the prefabricated PVC coiled material is a factory prefabricated product which is cooled, cut to be edged and coiled, and has consistent thickness, so that the prefabricated PVC coiled material is easy to lay and install during construction, but has high requirement on the flatness of a ground foundation before construction;
2. although the prefabricated PVC coiled material is antibacterial and durable, the joints of the laid coiled material are easy to crack, and the cracks are easy to accumulate dust and breed bacteria, so that the prefabricated PVC coiled material is not favorable for special environmental quality requirements of schools, nursing homes, kindergartens and the like;
3. the biggest shortcoming of the prefabricated PVC is that although the prefabricated PVC has certain elasticity, the prefabricated PVC still belongs to hard materials for special groups such as children, students and the old, has poor buffering performance and impact absorption performance, is very unfavorable for protecting feet and ankle joints, and is easy to fall and hurt if falling occurs.
In summary, the prefabricated PVC coiled material in the prior art as an indoor ground material has been increasingly unable to meet the requirements of special ground environments such as schools, nursing homes, kindergartens and the like on the ground material, and other types of protective terrace materials are generally suitable for outdoor arrangement, mainly because they are generally water permeable structures, and if they are arranged indoors, they are not easy to clean dust, and they are easy to breed mold for a long time.
Disclosure of Invention
The invention provides an indoor special clean surface protection ground structure and a construction method, aiming at solving the problems that the prefabricated PVC coiled material in the prior art has high requirement on the flatness of a ground foundation before construction, the seam is easy to crack, the cracked part is easy to accumulate dust, breed bacteria, has poor buffering performance and poor impact absorption performance, and is very unfavorable for protecting feet and ankle joints.
The invention relates to an indoor special clean surface protection ground structure and a construction method, wherein the specific structure and the construction method are as follows:
the utility model provides an indoor special clean face protection ground structure, includes the basal layer, its characterized in that:
the base layer is specifically a base layer paved by cement concrete or cement boards, a bottom coating, an ETPU particle buffer layer, a self-leveling layer and a PVC surface layer are sequentially arranged on the upper part of the base layer from bottom to top, and the base layer, the ETPU particle buffer layer, the self-leveling layer and the PVC surface layer are connected into a whole in a bonding mode.
The indoor special clean surface protective floor structure is characterized in that the bottom coating is formed by spraying or rolling single-component polyurethane glue or two-component epoxy resin glue on a base layer and is adhered to the base layer, and the thickness of the bottom coating is 0.1-0.3 mm.
The invention relates to an indoor special clean surface protective ground structure which is characterized in that an ETPU particle buffer layer is formed by bonding an ETPU particle mixed single-component polyurethane adhesive on the upper part of a bottom coating in a flat paving mode, and the thickness of the ETPU particle buffer layer is 5-20 mm.
ETPU particles are foamed Thermoplastic polyurethanes (Expanded Thermoplastic polyurethanes). The elasticity of the ETPU particles can not be lost when the temperature is between 65 ℃ and minus 20 ℃, the ETPU particles can effectively accumulate and release energy after each stress, and the unique polymer honeycomb structure provides strong shock absorption and resilience force and has excellent shock absorption and buffering performance. The structure with hard top and soft bottom fully considers the human-machine engineering principle of the activity field, has good impact absorption performance and comfortable foot feel, can well avoid accidental tumble injury and bruise accidents when children, students and old people play, move and walk, and can ensure that the ground can play a good protection role.
The invention relates to an indoor special clean surface protection ground structure which is characterized in that ETPU particles of an ETPU particle buffer layer are physically foamed by thermoplastic polyurethane, wherein the particle size of each ETPU particle is 2-8 mm, the ETPU particle is circular or elliptical, and the bulk density of the ETPU particle is 20kg/m3～200kg/m3。
The conventional sizes of the ETPU particles are 3-4 mm and 5-6 mm, and can be automatically adjusted according to requirements or actual construction conditions.
The indoor special clean surface protection ground structure is characterized in that the ETPU particle buffer layer is filled with the hole sealing layer, and the hole sealing layer is formed by filling the holes among the ETPU particles of the ETPU particle buffer layer in a sealing manner by adopting a high-strength two-component polyurethane elastomer material.
The construction method of the ETPU particle buffer layer and the hole sealing layer comprises different construction methods of paving ETPU particles, sealing and filling pores with high-strength two-component polyurethane elastomer materials or uniformly distributing the ETPU particles on the uncured high-strength two-component polyurethane elastomer materials and pressing the ETPU particles into the uncured high-strength two-component polyurethane elastomer materials, and the following construction steps can be seen.
The indoor special clean surface protective floor structure is characterized in that the self-leveling layer is formed by coating a high-strength two-component polyurethane elastomer material on the upper part of the hole sealing layer in a scraping mode and then self-leveling, the self-leveling layer is naturally formed after being cured, and the thickness of the self-leveling layer is 1-5 mm.
The high-strength double-component polyurethane elastomer material used for the hole sealing layer and the self-leveling layer is low in viscosity and good in leveling property, the time required by self-leveling of the liquid material is fully considered, the front end of a mixed body reacts slowly after the double-component material is mixed and scraped, the material can be fully leveled, the rear end reacts quickly, the whole curing time cannot be prolonged, and construction is facilitated.
The indoor special clean surface protective floor structure is characterized in that a single-component environment-friendly adhesive is blade-coated or roll-coated on the upper portion of the self-leveling layer to form an adhesive layer adhered with the PVC surface layer, and the thickness of the adhesive layer is 0.2-0.4 mm.
The indoor special clean surface protective ground structure is characterized in that the PVC surface layer is paved on the upper portion of the self-leveling layer and is combined with the self-leveling layer through the bonding layer, the PVC surface layer is specifically a wear-resistant clean surface film surface layer, and the thickness of the wear-resistant clean surface film surface layer is 0.6-2 mm.
The wear-resistant clean surface film adopted by the PVC surface layer has good wear-resistant, performance and flame retardant performance, moisture resistance, easy cleaning and good antibacterial effect.
A construction method of an indoor special clean surface protection ground structure is based on the indoor special clean surface protection ground structure, and comprises the following specific steps:
1) and (3) processing the base layer:
the basic layer of the cement concrete or the cement board needs to be flat, the surface has no sand-forming phenomenon, and if the sand-forming loosening condition exists, the polishing and repairing treatment is needed;
2) setting a bottom coating:
cleaning a foundation layer in a region to be constructed by using a blower before construction to ensure that the ground is dry and free of impurities, uniformly coating a single-component polyurethane adhesive or a double-component epoxy resin adhesive on the foundation layer in a spraying or rolling manner to form a base coating, wherein the using amount in the step is 0.15-0.3 kg per square meter, the base coating needs to cover the whole range of all the foundation layers, and then paving a subsequent ETPU particle buffer layer after the base coating is completely cured;
3) setting an ETPU particle buffer layer:
paving the ETPU particle buffer layer after the step 2), wherein the ETPU particle mixed single-component polyurethane adhesive is adhered to the upper part of the bottom coating in a flat paving mode, and the dosage in the step is 0.7-2.8 kg of ETPU particles and 0.28-1.12 kg of single-component polyurethane adhesive per square meter;
4) setting a hole sealing layer:
after the ETPU particle buffer layer in the step 3) is completely bonded, uniformly mixing and stirring the components A and B according to the proportion of 100:87, and sealing and filling the pores among the ETPU particles of the ETPU particle buffer layer in a manner of scraping glue and grouting to form a hole sealing layer, wherein the component A is a polyol composition material, the component B is an isocyanic acid composition material, and the using amount in the step is 3-12 kg per square meter of the high-strength two-component polyurethane elastomer material;
the component A of the high-strength two-component polyurethane elastomer material is a polyol composition, the component B is an isocyanic acid composition, and the two components are mixed together and then react, and are cured and formed.
5) Setting a self-leveling layer:
uniformly mixing and stirring a high-strength two-component polyurethane elastomer material according to the proportion of the component A to the component B of 100 to 87, then coating the mixture on a hole sealing layer, and naturally forming after curing, wherein the dosage in the step is 1.2-6 kg of the high-strength two-component polyurethane elastomer material per square meter;
6) setting a PVC surface layer:
this PVC surface course adopts the mode of bonding to fix on the levelling layer that flows automatically, and it is specifically do, before the PVC surface course is laid, earlier with single component environmental protection adhesive blade coating or roll coating on the levelling layer upper portion that flows automatically after the solidification, then in 15 ~ 60 minutes expand the wear-resisting clean facial mask surface course of PVC surface course spread can, single component environmental protection adhesive consumption in this step is 0.3 ~ 0.5 kg per square meter, the PVC surface course solidification needs 12 ~ 24 hours, treat that the construction finishes after the PVC surface course bonds completely.
The construction method of the indoor special clean surface protection ground structure is characterized in that the step 3) is provided with an ETPU particle buffer layer, the step 4) is provided with a hole sealing layer, the processing steps are that firstly, a high-strength two-component polyurethane elastomer material is mixed and stirred uniformly according to the proportion of the component A to the component B of 100:87, then, blade coating is carried out, then ETPU particles are thrown on the liquid surface, the positions with more accumulated particles are blown away by a back type blower, the ETPU particles are uniformly distributed on the liquid surface by one layer, then, the ETPU particles are rolled down by a flat edge roller, the particles are sunk into the liquid high-strength two-component polyurethane elastomer material to form the ETPU particle buffer layer and the hole sealing layer, and in the step, 0.7-2.8 kilograms of ETPU particles and 3-12 kilograms of high-strength polyurethane elastomer material are used for each square meter of the two components.
The indoor special clean surface protection ground structure and the construction method thereof have the following beneficial effects that:
1. the indoor special clean surface protection ground structure and the construction method can meet the requirements of wear resistance, skid resistance, flame retardance, moisture resistance, easy cleaning, bacteria resistance and rich pattern colors of an indoor terrace on the ground, and make full use of the super-strong impact absorption performance and the energy return capability generated after ETPU particles and a two-component polyurethane elastomer are combined, so that the whole structure is ensured to have better damping and buffering capacity, and the protection performance of the ground is greatly improved.
2. The materials adopted by the indoor special clean surface protection ground structure and the construction method are environment-friendly materials, can completely meet the chemical property complete detection of the new national standard GB36246-2018, and really achieve the effects of environmental protection, no toxicity, safety and durability.
Drawings
Fig. 1 is a schematic structural view of an indoor special clean surface protective ground structure and a construction method thereof.
Fig. 2 is a schematic structural view of an indoor special clean surface protective floor structure and a construction method according to embodiment 3 of the present invention.
In the figure: 1-base layer, 2-bottom layer, 3-ETPU particle buffer layer, 3 a-hole sealing layer, 4-self-leveling layer, 5-PVC surface layer and 6-adhesive layer.
Detailed Description
The invention further describes an indoor special clean surface protective ground structure and a construction method thereof with reference to the attached drawings and the embodiment.
As shown in figure 1, the indoor special clean surface protective ground structure comprises a base layer 1 formed by paving cement concrete or cement boards, and a bottom coating 2, an ETPU particle buffer layer 3, a hole sealing layer 3a, a self-leveling layer 4, an adhesive layer 6 and a PVC surface layer 5 which are arranged on the upper part of the base layer in the structural sequence from bottom to top and are connected into a whole in an adhesive mode.
The base coat 2 is formed by spraying or rolling a single-component polyurethane adhesive or a double-component epoxy resin adhesive on the base layer 1 to be adhered with the base layer.
The ETPU particle buffer layer 3 is formed by bonding an ETPU particle mixed single-component polyurethane adhesive on the upper part of the bottom coating in a flatly paved manner, and the thickness of the ETPU particle buffer layer is 5-20 mm.
The ETPU particles of the ETPU particle buffer layer 3 are formed by physically foaming thermoplastic polyurethane, wherein the particle size of each ETPU particle is 2-8 mm, the shape of each ETPU particle is circular or oval, and the bulk density of the ETPU particles is 20kg/m3～200kg/m3。
The ETPU particle buffer layer 3 is filled with a hole sealing layer 3a, and the hole sealing layer is formed by filling the holes among the ETPU particles of the ETPU particle buffer layer with a high-strength double-component polyurethane elastomer material.
The self-leveling layer 4 is formed by coating a high-strength two-component polyurethane elastomer material on the upper part of the hole sealing layer 3a in a scraping mode and then self-leveling, is naturally formed after being cured, and is 1-5 mm thick.
And blade coating or roll coating single-component environment-friendly adhesive glue on the upper part of the self-leveling layer 4 to form an adhesive layer 6 adhered with the PVC surface layer 5, wherein the thickness of the adhesive layer 6 is 0.2-0.4 mm.
The PVC surface layer 5 is paved on the upper part of the self-leveling layer 4, and is combined with the self-leveling layer through the bonding layer 6, and the PVC surface layer is specifically a wear-resistant clean surface film surface layer with the thickness of 0.6-2 mm.
Example 1
1. Base layer treatment: the cement concrete foundation needs to be flat, the surface has no sand-forming phenomenon, and if the sand-forming is loose, the cement concrete foundation needs to be polished and repaired.
2. And (3) constructing a bottom coating: the bottom coating is formed by spraying or rolling two-component epoxy resin glue, and the dosage of each square meter in the embodiment is 0.2 kg. Before construction, a blower is used for cleaning a to-be-constructed area to ensure that the ground is dry and free of impurities, the plastic laying surface range is required to be completely sprayed in place, and a leakage area cannot be left. And spreading the buffer layer after the epoxy primer is completely cured.
3. ETPU granule buffer layer construction: the ETPU particle buffer layer is formed by mixing single-component polyurethane glue with ETPU particles foamed by thermoplastic polyurethane and then spreading the mixture, the thickness of the ETPU particle buffer layer is 5-6 mm, and in the embodiment, 0.7 kg of ETPU particles and 0.28 kg of single-component polyurethane glue are used per square meter.
4. And (3) construction of a hole sealing layer: after the ETPU particle buffer layer is completely cured, using a high-strength two-component polyurethane elastomer material according to the component A: the component B is 100:87, and then the mixture is scraped and grouted, and the pores of the buffer layer are sealed and filled up to form a hole sealing layer, wherein the dosage of each square meter in the embodiment is 3 kilograms.
5. Self-leveling layer construction: the high-strength two-component polyurethane elastomer material is prepared from the following components in parts by weight: the component B is 100:87 is evenly mixed and stirred, then the mixture is blade-coated on the hole sealing layer, and the mixture is naturally formed after being solidified, in the embodiment, 2.5 kilograms of high-strength two-component polyurethane elastomer material is used per square meter, and the thickness of the self-leveling layer is 2 mm.
6. PVC surface layer construction: bond the PVC surface course on the upper portion of flowing the flat bed automatically, need earlier with single-component environmental protection adhesive blade coating on the flat bed automatically after the solidification before laying, then expand the PVC surface course in 15 ~ 60 minutes and lay can, the adhesive mass that per square metre used in this embodiment is 0.5 kg, and PVC surface course thickness is 1mm, and PVC surface course solidification needs 12 ~ 24 hours, treats that the construction of PVC surface course complete bonding back finishes.
Example 2
1. Base layer treatment: the cement concrete foundation needs to be flat, the surface has no sand-forming phenomenon, and if the sand-forming is loose, the cement concrete foundation needs to be polished and repaired.
2. And (3) constructing a bottom coating: the coating is prepared by spraying or rolling two-component epoxy resin glue, and the dosage of the coating is about 0.2 kg per square meter in the embodiment. Before construction, a blower is used for cleaning a to-be-constructed area to ensure that the ground is dry and free of impurities, the plastic laying surface range is required to be completely sprayed in place, and a leakage area cannot be left. And spreading the buffer layer after the epoxy primer is completely cured.
3. The construction of an ETPU particle buffer layer and a hole sealing layer: different from the example 1, the method comprises the following steps of mixing the high-strength two-component polyurethane elastomer material according to the component A: the component B is 100:87, then spreading the ETPU particles on the liquid surface, blowing off the thick accumulated particles by using a back type blower, uniformly distributing a layer of the ETPU particles on the liquid surface, then rolling down the ETPU particles by using a flat-edge roller, and depositing the particles into a liquid material to form an ETPU particle buffer layer and a hole sealing layer, wherein the whole thickness of the buffer layer is 5-6 mm, and 0.7 kg of ETPU particles and 3 kg of high-strength two-component polyurethane elastomer material are used per square meter in the embodiment.
4. Self-leveling layer construction: the high-strength two-component polyurethane elastomer material is prepared from the following components in parts by weight: the component B is 100:87 is evenly mixed and stirred, then the mixture is blade-coated on the hole sealing layer, and the mixture is naturally formed after being solidified, in the embodiment, 2.5 kilograms of high-strength two-component polyurethane elastomer material is used per square meter, and the thickness of the self-leveling layer is 2 mm.
5. PVC surface layer construction: bond the PVC surface course on the upper portion of flowing the flat bed automatically, need earlier with single-component environmental protection adhesive blade coating on the flat bed automatically after the solidification before laying, then expand the PVC surface course in 15 ~ 60 minutes and lay can, the adhesive mass that per square metre used in this embodiment is 0.5 kg, and PVC surface course thickness is 1mm, and PVC surface course solidification needs 12 ~ 24 hours, treats that the construction of PVC surface course complete bonding back finishes.
Example 3
For the movable area which is partially required to have softer foot feeling, the construction of the sealing layer and the construction of the self-leveling layer in the above embodiment 1 and embodiment 2 can be saved, and the construction is carried out according to the following method:
1. base layer treatment: the cement concrete foundation needs to be flat, the surface has no sand-forming phenomenon, and if the sand-forming is loose, the cement concrete foundation needs to be polished and repaired.
2. And (3) constructing a bottom coating: the coating is formed by spraying or rolling two-component epoxy resin glue, and the dosage of each square meter in the embodiment is 0.2 kg. Before construction, a blower is used for cleaning a to-be-constructed area to ensure that the ground is dry and free of impurities, the plastic laying surface range is required to be completely sprayed in place, and a leakage area cannot be left. And spreading the buffer layer after the epoxy primer is completely cured.
3. ETPU granule buffer layer construction: the ETPU particle buffer layer is formed by paving single-component polyurethane glue mixed with ETPU particles foamed by thermoplastic polyurethane, in the embodiment, 0.7 kg of ETPU particles and 0.28 kg of single-component polyurethane glue are used per square meter, and the thickness of the ETPU particle buffer layer is 5-6 mm.
4. PVC surface layer construction: as shown in fig. 2, different from the above embodiment, in this step, after the ETPU particle buffer layer is completely cured, a PVC surface layer with a thickness of 1mm is directly laid and bonded on the ETPU particle buffer layer, specifically, before laying, a single-component environment-friendly adhesive is first used to brush the surface layer on the ETPU particle buffer layer to form an adhesive layer, and then the PVC surface layer is spread and laid within 15-60 minutes, where the amount of the adhesive used per square meter is 0.3 kg, the curing of the PVC surface layer requires 12-24 hours, and after the PVC surface layer is completely bonded, the construction is completed.
The indoor special clean surface protection ground structure and the construction method can meet the requirements of wear resistance, skid resistance, flame retardance, moisture resistance, easy cleaning, bacteria resistance and rich pattern colors of an indoor terrace on the ground, and make full use of the super-strong impact absorption performance and the energy return capability generated after ETPU particles and a two-component polyurethane elastomer are combined, so that the whole structure is ensured to have better damping and buffering capacity, and the protection performance of the ground is greatly improved.
The materials adopted by the indoor special clean surface protection ground structure and the construction method are environment-friendly materials, can completely meet the chemical property complete detection of the new national standard GB36246-2018, and really achieve the effects of environmental protection, no toxicity, safety and durability.
The indoor special clean surface protective ground structure and the construction method are suitable for places with special ground environment requirements such as various schools, old people homes, kindergartens and the like.

Claims (10)

1. The utility model provides an indoor special clean face protection ground structure, includes foundation layer (1), its characterized in that:
the base layer (1) is specifically a base layer formed by paving cement concrete or cement boards, a bottom coating (2), an ETPU particle buffer layer (3), a self-leveling layer (4) and a PVC surface layer (5) are sequentially arranged on the upper part of the base layer from bottom to top, and are connected into a whole in a bonding mode.
2. The indoor special clean surface protection floor structure as claimed in claim 1, wherein the primer layer (2) is formed by spraying or rolling a one-component polyurethane adhesive or a two-component epoxy resin adhesive on the base layer (1) to be adhered to the base layer, and the thickness of the primer layer is 0.1mm to 0.3 mm.
3. The indoor special-purpose clean surface protection floor structure as claimed in claim 1, wherein the ETPU particle buffer layer (3) is made of ETPU particle mixed single-component polyurethane glue which is adhered on the upper part of the bottom coating in a flat spreading manner, and the thickness of the ETPU particle buffer layer is 5 mm-20 mm.
4. An indoor special-purpose clean surface protection floor structure as claimed in claim 3, wherein said ETPU particles of said ETPU particle buffer layer (3) are physically foamed by thermoplastic polyurethane, wherein the particle size of single ETPU particle is 2 mm-8 mm, the shape is circular or elliptical, the packing density of ETPU particle is 20kg/m3～200kg/m3。
5. An indoor special-purpose clean-surface protective floor structure as claimed in claim 3, wherein the ETPU particle buffer layer (3) is filled with a hole sealing layer (3a), and the hole sealing layer is formed by filling up the holes between the ETPU particles of the ETPU particle buffer layer with a high-strength two-component polyurethane elastomer material.
6. The indoor special clean surface protective floor structure according to claim 1, wherein the self-leveling layer (4) is formed by self-leveling after a high-strength two-component polyurethane elastomer material is coated on the upper part of the hole sealing layer (3a) in a scraping manner, the self-leveling layer is naturally formed after being cured, and the thickness of the self-leveling layer is 1 mm-5 mm.
7. The indoor special clean surface protective floor structure as claimed in claim 1, wherein the upper part of the self-leveling layer (4) is knife-coated or roll-coated with a single-component environment-friendly adhesive to form an adhesive layer (6) adhered with the PVC surface layer (5), and the thickness of the adhesive layer is 0.2mm to 0.4 mm.
8. The indoor special clean surface protective floor structure as claimed in claim 1, wherein the PVC surface layer (5) is paved on the upper part of the self-leveling layer (4), and is combined with the self-leveling layer through the adhesive layer (6), and the PVC surface layer is a wear-resistant clean surface film surface layer, and the thickness of the PVC surface layer is 0.6 mm-2 mm.
9. A construction method of an indoor special clean surface protective floor structure based on any one of the above claims, comprising the following specific steps:
1) treating the base layer (1):
the basic layer of the cement concrete or the cement board needs to be flat, the surface has no sand-forming phenomenon, and if the sand-forming loosening condition exists, the polishing and repairing treatment is needed;
2) providing an undercoat layer (2):
cleaning a foundation layer in a region to be constructed by using a blower before construction to ensure that the ground is dry and free of impurities, uniformly coating a single-component polyurethane adhesive or a double-component epoxy resin adhesive on the foundation layer in a spraying or rolling manner to form a base coating, wherein the using amount in the step is 0.15-0.3 kg per square meter, the base coating needs to cover the whole range of all the foundation layers, and paving a subsequent ETPU particle buffer layer (3) after the base coating is completely cured;
3) setting an ETPU particle buffer layer (3):
paving the ETPU particle buffer layer after the step 2), wherein the ETPU particle mixed single-component polyurethane adhesive is adhered to the upper part of the bottom coating in a flat paving mode, and the dosage in the step is 0.7-2.8 kg of ETPU particles and 0.28-1.22 kg of single-component polyurethane adhesive per square meter;
4) setting a hole sealing layer (3 a):
after the ETPU particle buffer layer (3) in the step 3) is completely bonded, uniformly mixing and stirring the components A and B according to the proportion of 100:87, and sealing and filling the pores among the ETPU particles of the ETPU particle buffer layer in a manner of scraping glue and grouting to form a hole sealing layer, wherein the component A is a polyol composition material, the component B is an isocyanic acid composition material, and the using amount in the step is 3-12 kg per square meter of the high-strength two-component polyurethane elastomer material;
5) setting a self-leveling layer (4):
uniformly mixing and stirring a high-strength two-component polyurethane elastomer material according to the proportion of the component A to the component B of 100 to 87, then coating the mixture on a hole sealing layer (3a), and naturally forming after curing, wherein the using amount in the step is 1.2-6 kg per square meter of the high-strength two-component polyurethane elastomer material;
6) setting a PVC surface layer (5):
this PVC surface course adopts the mode of bonding to fix on leveling layer (4) that flows automatically, and it specifically does, before the PVC surface course is laid, earlier with single-component environmental protection adhesive blade coating or roll coating on the leveling layer upper portion that flows automatically after the solidification, then in 15 ~ 60 minutes expand the wear-resisting clean facial mask surface course of PVC surface course spread can, single-component environmental protection adhesive quantity in this step is 0.3 ~ 0.5 kg per square metre, the PVC surface course solidification needs 12 ~ 24 hours, it finishes to wait that the construction of PVC surface course complete bonding back.
10. The construction method of an indoor special clean surface protective floor structure as claimed in claim 9, it is characterized in that the step 3) is provided with an ETPU particle buffer layer (3) and the step 4) is provided with a hole sealing layer (3a), the processing steps are that firstly, the high-strength double-component polyurethane elastomer material is prepared according to the following components: the component B is mixed and stirred evenly according to the proportion of 100:87 and then is coated by blade, then the ETPU particles are thrown on the liquid surface, the position with more accumulated particles is blown by a back type blower, so that the ETPU particles are uniformly distributed on the liquid surface by one layer, then, the ETPU particles are rolled down by a flat-edge roller, so that the ETPU particles are deposited in the liquid high-strength two-component polyurethane elastomer material to form an ETPU particle buffer layer and a hole sealing layer, in the step, 0.7-2.8 kg of ETPU particles and 3-12 kg of high-strength two-component polyurethane elastomer material are used per square meter.
CN201910874223.3A 2019-09-17 2019-09-17 Indoor special clean surface protection ground structure and construction method Pending CN112523464A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113549389A (en) * 2021-07-30 2021-10-26 上海岩皇环保科技有限公司 Renewable elastic polyurethane millstone material and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113549389A (en) * 2021-07-30 2021-10-26 上海岩皇环保科技有限公司 Renewable elastic polyurethane millstone material and application thereof

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