CN114536918A - Self-adhesion vapour barrier film - Google Patents

Self-adhesion vapour barrier film Download PDF

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CN114536918A
CN114536918A CN202210098509.9A CN202210098509A CN114536918A CN 114536918 A CN114536918 A CN 114536918A CN 202210098509 A CN202210098509 A CN 202210098509A CN 114536918 A CN114536918 A CN 114536918A
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layer
steam
self
adhesive
parts
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Inventor
王迎春
李建军
丁红梅
张东东
王琮
吴志强
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Beijing Oriental Yuhong Waterproof Technology Co Ltd
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Beijing Oriental Yuhong Waterproof Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B11/00—Layered products comprising a layer of bituminous or tarry substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B11/00—Layered products comprising a layer of bituminous or tarry substances
    • B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B11/046—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B11/00—Layered products comprising a layer of bituminous or tarry substances
    • B32B11/10—Layered products comprising a layer of bituminous or tarry substances next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

The invention discloses a self-adhesion steam-insulating film, which comprises a first steam-insulating layer and a second steam-insulating layer, wherein the first steam-insulating layer is a multilayer composite film and is used for preventing the self-adhesion steam-insulating film from being torn and broken; the second steam-isolating layer is a glue layer which is coated on the first steam-isolating layer and used for wrapping and sealing a penetrating object, and an anti-sticking layer is arranged on the other side of the second steam-isolating layer; the multilayer composite film comprises one or more resin layers, and also comprises one or two of a metal layer and a gridding cloth layer; the steam-insulating film has good steam-insulating performance, stability and mechanical property, is convenient and fast to construct, provides a better steam-insulating layer material for the profiled steel sheet roof, and can improve the effect and prolong the service life of a roof maintenance system.

Description

Self-adhesion vapour barrier film
Technical Field
The invention relates to the technical field of vapor-barrier membranes, in particular to a self-adhesion vapor-barrier membrane.
Background
The steam barrier is a structural layer for preventing water vapor in the chamber from permeating into the heat insulation layer. JGJ/T316-2013 Single-layer waterproof coiled material roofing engineering technical regulation stipulates that when the vapor permeation resistance actually existing on the inner side of a roof structure condensation interface in severe cold and cold regions is smaller than a required value, or indoor moisture in other regions possibly penetrates through a roof structure layer to enter an insulating layer, a vapor barrier layer is arranged.
The profiled steel sheet has the characteristics of light weight, high strength, convenient construction and installation and high speed, and is widely applied to industrial and civil buildings. The commonly used steam-insulating materials for the profiled steel sheet are polyethylene film, composite metal aluminum foil, coating film and the like. When the polyethylene film is used as a steam barrier, the polyethylene film is loosely paved on the profiled steel sheet, the loose paving construction method enables water vapor to penetrate through the whole roof and move, and when the polyethylene film is damaged, the water vapor is condensed on the whole roof. In addition, although the PE steam-insulating film considers the overlapping, the detail joint adhesion is not easy to process, and the quality difference of field operators is hardly ensured, so that the continuity of the steam-insulating layer can not be ensured. Therefore, the indoor hot steam permeates into the heat-insulating layer through the gaps of the PE steam-insulating layer, so that the heat-insulating property of the heat-insulating cotton is reduced, and a roof maintenance system is influenced. When the composite metal aluminum foil is used as a steam barrier, the negative influence on a roof maintenance system is the same as that of a polyethylene film. When the profiled steel sheet adopts a coating film as a steam-insulating layer, the coating quality has great influence on the steam-insulating effect, and particularly, the coating at the seam of the steel sheet is difficult to be uniformly coated, so that effective sealing cannot be formed.
Chinese patent CN 112440541 a (zhubao) discloses a preparation method and application of a vapor barrier film, wherein the vapor barrier film comprises a resin layer, a metal layer, a chemical treatment layer and a vapor barrier layer which are sequentially arranged, and the material of the vapor barrier layer comprises butyl rubber modified asphalt; the butyl rubber modified asphalt is selected as the steam barrier layer of the steam barrier membrane, so that the steam barrier membrane has excellent air tightness and water tightness brought by the butyl rubber on one hand, and also has excellent aging resistance and tensile strength brought by the matching of the butyl rubber and the asphalt on the other hand.
Chinese patent CN 109914714A discloses a modified asphalt self-adhesive waterproof vapor barrier film based on molecular discrete polymerization, which comprises a reel and an asphalt layer, wherein the bottom end of the asphalt layer is bonded with an aluminum foil layer through asphalt, the bottom end of the aluminum foil layer is bonded with a polymer layer, and the polymer layer is formed by bonding the polymer layer on the bottom end of the aluminum foil layer according to the ratio of 3: 5-4: the aluminum foil layer can improve the fire resistance and the water resistance of the aluminum foil layer, the polymer layer realizes the structure of the type and the arrangement of atoms in a chain, the type of substituent groups and end groups, the arrangement sequence of monomer units and the type and the length of branched chains, so that the flexibility of the aluminum foil layer is improved, the toughness and the pulling effect of the whole vapor barrier film are improved through the sinking and floating weaving of the weaving layer, the service life of the vapor barrier film is prolonged, the contact effect of the vapor barrier film and a mounting position in mounting is improved through the sponge layer, and the application range of the aluminum foil layer is improved.
Disclosure of Invention
The invention aims to provide a self-adhesive steam-isolating membrane aiming at the defects of the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a self-adhesion steam-insulating film comprises a first steam-insulating layer and a second steam-insulating layer, wherein the first steam-insulating layer is a multilayer composite film and is used for preventing the self-adhesion steam-insulating film from being torn and broken; the second steam-proof layer is a glue layer, the glue layer is coated on the first steam-proof layer and used for wrapping and sealing a penetrating object and preventing water vapor from penetrating through the penetrating object.
Further, the multilayer composite film comprises one or more resin layers, wherein the resin layers are thermoplastic resins, including but not limited to one of polyolefin, polyester, polyamide, EVOH and PVDC.
Further, the multilayer composite film also comprises one or two of a metal layer and a grid cloth layer;
the metal layer is one of aluminum foil or copper foil; including but not limited to aluminum foil or copper foil, other metal materials can be selected to form the metal layer.
The gridding cloth layer is one of polyester gridding cloth or glass fiber gridding cloth.
Furthermore, the gram weight of the mesh fabric is 30-200 g/m2Mesh size 2mm to 8 mm.
Furthermore, the multilayer composite film is 2-11 layers and is prepared by gluing composite or co-extrusion composite.
Preferably, the number of the layers of the multilayer composite film is two or three;
the two-layer composite film is sequentially a first resin layer and a second resin layer, and polypropylene is preferably selected as the first resin layer and the second resin layer.
The three layers of composite films are a first resin layer, a metal layer and a grid cloth layer in sequence; the first resin layer is preferably ethylene terephthalate, and the thickness of the first resin layer is 0.001 mm-0.004 mm; the mesh cloth is preferably polyester mesh cloth, and the gram weight of the mesh cloth is 60-120 g/m2And the mesh size of the mesh cloth is 3mm by 3 mm.
Furthermore, the thickness of the self-adhesive steam-isolating film is 0.3-2.0 mm. The thickness of the self-adhesive steam-isolating film is preferably 0.5mm and 0.6 mm.
Further, the thickness of the first steam-isolating layer is 0.1 mm-0.3 mm; the thickness of the metal layer is 0.007 mm-0.15 mm.
Further, the second vapour barrier opposite side is provided with antiseized layer, antiseized layer is from type membrane or from type paper for prevent self mutual adhesion.
Further, the glue layer is one of self-adhesive modified asphalt, butyl rubber and pressure-sensitive adhesive.
Further, the self-adhesive modified asphalt comprises the following components: asphalt, a wetting tackifier, a first crosslinking agent and a second crosslinking agent; the first cross-linking agent is an inorganic layered compound modified by an aminosilane coupling agent, and the second cross-linking agent is SEBS-g-MAH.
Further, the self-adhesive modified asphalt comprises the following components in parts by weight: 50-65 parts of asphalt, 2-10 parts of SIS, 5-15 parts of SBS, 2-6 parts of tackifying resin, 1-10 parts of compatilizer, 4-15 parts of softener, 1-6 parts of wetting tackifier, 4-10 parts of first cross-linking agent, 2-8 parts of second cross-linking agent and 5-20 parts of filler.
Further, the asphalt is one or two of No. 90 asphalt and No. 70 asphalt.
The SIS is one or two of star-shaped SIS and linear SIS; preferably, the SIS is linear SIS, and the St content is less than or equal to 15 percent.
The SBS is one or two of star SBS and linear SBS; preferably, the SBS is formed by compounding star SBS and linear SBS, and the compounding ratio is that the star SBS is calculated according to parts by weight: linear SBS is 1: 1.5-3.4; preferably, the SBS comprises: the best linear SBS is 1: 2.3; st of the star SBS is 30% optimal.
The tackifying resin is one or more of petroleum resin, rosin resin, terpene resin and coumarone resin; preferably, the tackifying resin is a C5 petroleum resin.
The compatilizer is aromatic oil, the aromatic content in the aromatic oil is more than or equal to 85 percent, and the flash point is not lower than 220 ℃; the aromatic hydrocarbon can increase the compatibility of SBS, SIS and asphalt, improve the dissolving effect of SBS and SIS, and fully stretch the macromolecular chains of SBS and SIS.
The softener is one or two of three-line oil and two-line oil; preferably, the softener is minus two-line oil.
The wetting tackifier is polyisobutylene succinic acid pentaerythritol ester; preferably, the molecular weight of the polyisobutylene succinic acid pentaerythritol ester is 1300-2600.
The filler is one or more of light calcium carbonate, heavy calcium carbonate, talcum powder and kaolin with 400-mesh and 600-mesh meshes, so that the air tightness of the product is ensured.
Further, the first cross-linking agent is an amino silane coupling agent modified inorganic layered compound, and the amino silane coupling agent modified inorganic layered compound is one or more of talcum powder, mica powder, graphite, montmorillonite and hydrotalcite; preferably, the hydrotalcite modified with an aminosilane coupling agent is most preferred.
Further, the second crosslinking agent is SEBS-g-MAH (maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymer), and the grafting rate of maleic anhydride is 1.2% -1.6%.
Further, the preparation method of the self-adhesive modified asphalt comprises the following steps:
(1) adding a second crosslinking agent SEBS-g-MAH into 2/3 softening agent for pre-swelling for 8h, and improving the dissolving effect of SEBS-g-MAH to obtain a pre-swelling solution;
(2) heating asphalt to 160 ℃, adding a compatilizer and 1/3 softener, heating to 180 ℃, and uniformly stirring to obtain a mixed solution;
(3) controlling the temperature of the mixed solution to be 180-190 ℃, sequentially adding SBS and SIS, uniformly stirring, adding the pre-swelling solution after the SBS and the SIS are completely swelled and dissolved, and uniformly stirring;
(4) and controlling the temperature of the mixed solution to be 150-160 ℃, continuously adding the first cross-linking agent, uniformly stirring, then adding the wetting tackifier and the tackifying resin, uniformly stirring, finally adding the filler, and uniformly stirring to obtain the adhesive modified asphalt.
Further, the preparation method of the self-adhesive steam-isolating membrane comprises the following steps:
(1) preparing self-adhesive modified asphalt according to the scheme;
(2) and controlling the temperature of the self-adhesive modified asphalt to be 150-160 ℃, coating the self-adhesive modified asphalt on the first steam barrier, and then covering an anti-sticking layer to obtain the self-adhesive steam barrier.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the self-adhesive steam-isolating membrane is designed with a multilayer structure, so that the self-adhesive steam-isolating membrane has excellent mechanical properties, high nail-stem tearing strength, strong peeling strength, tensile strength and deformation resistance, can resist upper construction load, ensures the continuity of a steam-isolating layer, can support an upper heat-insulating material, and avoids the heat-insulating material from being fractured and deformed at a wave trough position after being trodden.
The first steam barrier layer of the self-adhesive steam barrier film is formed by compounding multiple materials, has good tear resistance and breakage resistance, and can reduce the damage rate of the self-adhesive steam barrier film; the second steam-proof layer adopts the glue film, has stronger autohension, has very strong wrapping power to the screw that pierces through, forms the parcel sealed, blocks the entering of vapor, improves the vapour-proof effect.
The design of the glue layer and the anti-sticking layer of the self-adhesive steam-insulating film ensures the steam-insulating effectiveness and the construction convenience of the joint and the lap joint part. The invention provides a better steam-insulating layer material for the profiled steel sheet roof, and can improve the effect and the service life of a roof maintenance system.
The amino group in the amino silane modified inorganic lamellar compound in the self-adhesive modified asphalt formula can generate chemical adsorption with carboxyl on a condensed ring aromatic sheet in the asphaltene, a stable dispersion system can be formed in the asphalt, nano-scale dispersion and lamellar arrangement can be achieved in the modified asphalt, the compactness among molecules of the modified asphalt is increased, and the self-adhesive modified asphalt has good steam-insulating property.
According to the invention, the polyisobutylene succinic acid pentaerythritol ester with small molecular weight is added into the self-adhesive modified asphalt formula, so that the bonding and wetting capacity of the modified asphalt to a base material is improved, the system viscosity can be reduced, the fluidity of the modified asphalt is increased, and the production of the ultrathin steam-isolating membrane with the thickness of less than 0.6mm is facilitated.
The invention provides a preparation method of self-adhesive modified asphalt, wherein an inorganic layered compound modified by an aminosilane coupling agent is used as a first crosslinking agent, an amino functional group on the crosslinking agent is used as a reactive active site, so that the inorganic layered compound can react with carboxylic acid in the asphalt on the one hand and react with anhydride in a macromolecular polymer SEBS-g-MAH on the other hand, a stable three-dimensional network structure can be formed through chemical bonding, and the high-temperature stability of the modified asphalt is improved.
In the preparation process of the self-adhesive modified asphalt, the PS hard segment on the SEBS-g-MAH macromolecular chain and the PS hard segment on the SBS macromolecular chain are dissolved, and the PS chain segment crystallization regions on the two macromolecular chains are mutually aggregated to form a physical crosslinking region, so that the dispersion of SBS in the asphalt is improved, and the stability of the modified asphalt is further improved.
Drawings
FIG. 1 is a schematic view of the structure of a vapor barrier membrane according to the present invention;
FIG. 2 is a schematic structural view of embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of embodiment 2 of the present invention;
FIG. 4 is a schematic structural view of embodiment 3 of the present invention;
FIG. 5 is a schematic structural view of embodiment 4 of the present invention;
fig. 6 is a schematic structural diagram of embodiment 5 of the present invention.
In the figure: 1. a first vapor barrier; 11. a polypropylene film; 12. a metallic aluminum layer; 13. polyethylene terephthalate; 14. glass fiber mesh cloth; 2. a second vapor barrier; 3. and (4) an anti-sticking layer.
Detailed Description
The following examples further describe embodiments of the present invention in detail. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
1. Preparation of self-adhesive modified asphalt
Preparing 5 groups of self-adhesive modified asphalt by adopting a self-adhesive modified asphalt preparation method according to the components given in the table 1 for preparing a steam-isolating membrane for later use;
TABLE 1 examples of preparation of self-adhesive modified asphalts
Figure BDA0003491526490000051
Figure BDA0003491526490000061
2. Preparation of vapor barrier film
Example 1: a self-adhesive vapour-isolating film, the first vapour-isolating layer includes extinction polypropylene film with thickness of 0.02mm, metal aluminium layer with thickness of 0.007mm, polyethylene glycol terephthalate with thickness of 0.012mm, glass fibre net graticule with grammes per square metre of 80g/m2(ii) a The second steam-isolating layer is the self-adhesive modified asphalt prepared in preparation example 1; the anti-sticking layer is a PE release film. And (3) preparing the layers of the first steam barrier layer by an adhesive composite process, thermally coating the second steam barrier layer on the first steam barrier layer, and then coating the anti-adhesion layer to obtain the self-adhesion modified steam barrier film.
Example 2: a self-adhesive vapour-isolating film, the first vapour-isolating layer includes extinction polypropylene film with thickness of 0.02mm, metal aluminium layer with thickness of 0.007mm, polyethylene glycol terephthalate with thickness of 0.012mm, glass fibre net graticule with grammes per square metre of 80g/m2(ii) a The second steam-barrier layer is the self-adhesive modified asphalt prepared in preparation example 2; the anti-sticking layer is a PE release film. And (3) preparing the layers of the first steam barrier layer by an adhesive composite process, thermally coating the second steam barrier layer on the first steam barrier layer, and then coating the anti-adhesion layer to obtain the self-adhesion modified steam barrier film.
Example 3: a self-adhesive vapour-isolating film, the first vapour-isolating layer includes extinction polypropylene film with thickness of 0.02mm, metal aluminium layer with thickness of 0.007mm, polyethylene glycol terephthalate with thickness of 0.012mm, glass fibre net graticule with grammes per square metre of 80g/m2(ii) a The second steam-barrier layer is the self-adhesive modified asphalt prepared in preparation example 3; the anti-sticking layer is a PE release film. And (3) preparing the layers of the first steam barrier layer by an adhesive composite process, thermally coating the second steam barrier layer on the first steam barrier layer, and then coating the anti-adhesion layer to obtain the self-adhesion modified steam barrier film.
Example 4: a self-adhesive vapour-isolating membrane, the first vapour-isolating layer includes four laminated polypropylene films with thickness of 0.25mm, glass fiber mesh cloth and gram weight of 100g/m2(ii) a The second steam-barrier layer is the self-adhesive modified asphalt prepared in preparation example 4; the anti-sticking layer is a PE release film. And (3) preparing the layers of the first steam barrier layer by an adhesive composite process, thermally coating the second steam barrier layer on the first steam barrier layer, and then coating the anti-adhesion layer to obtain the self-adhesion modified steam barrier film.
Example 5: a self-adhesive steam-isolating film, a first separatorThe steam layer comprises four laminated polypropylene films with the thickness of 0.25mm, glass fiber mesh cloth and the gram weight of 100g/m2(ii) a The second steam-barrier layer is the self-adhesive modified asphalt prepared in preparation example 5; the anti-sticking layer is a PE release film. And (3) preparing the layers of the first steam barrier layer by an adhesive composite process, thermally coating the second steam barrier layer on the first steam barrier layer, and then coating the anti-adhesion layer to obtain the self-adhesion modified steam barrier film.
Comparative example 1: a vapor barrier film comprises a polyethylene film having a thickness of 0.3 mm.
And (3) performance testing:
(1) the water vapor permeability is measured according to GB/T17146-2015 test method for water vapor permeability of building materials and products thereof.
(2) The peel strength and the nail-stem tear strength were determined according to GB 23441-2009 self-adhesive Polymer modified asphalt waterproofing roll.
(3) The tensile strength is measured according to GB 23441-2009 self-adhesive polymer modified asphalt waterproof coiled material.
(4) Softening point according to GB/T4507-
Table 2 examples of self-adhesive modified vapour barrier membranes
Figure BDA0003491526490000071
As can be seen from the comparison of the test data of the examples 1-5 and the comparative example 1, the vapor barrier film prepared by the invention has small vapor transmission capacity and good vapor barrier property; the steam-proof film provided by the invention is provided with the self-adhesive modified asphalt layer, is firmly bonded with the base layer, has high peel strength, is not easy to fall off, and has high temperature resistance; meanwhile, the tested nail rod has high tearing strength and tensile strength, and the steam-isolating film has strong tensile strength and deformation resistance, can resist upper construction load and ensures the continuity of a steam-isolating layer; meanwhile, the upper heat insulation material can be supported, and the heat insulation material is prevented from being broken and deformed at the wave trough position after being trampled.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A self-adhesion steam-insulating film is characterized by comprising a first steam-insulating layer and a second steam-insulating layer, wherein the first steam-insulating layer is a multilayer composite film and is used for preventing the self-adhesion steam-insulating film from being torn and broken; the second steam-proof layer is a glue layer, and the glue layer is coated on the first steam-proof layer and used for wrapping and sealing a penetrating object.
2. The self-adhesive vapor barrier film of claim 1, wherein the multi-layer laminate film comprises one or more resin layers, wherein the resin layers are thermoplastic resins including but not limited to one of polyolefin, polyester, polyamide, EVOH, PVDC.
3. The self-adhesive vapor barrier film of claim 2, wherein the multi-layer composite film further comprises one or both of a metal layer and a scrim layer;
the metal layer is one of aluminum foil or copper foil;
the gridding cloth layer is one of polyester gridding cloth or glass fiber gridding cloth.
4. The self-adhesive vapor-barrier film according to claim 3, wherein the grammes weight of the mesh cloth is 30-200 g/m2Mesh size 2mm to 8 mm.
5. The self-adhesive steam barrier film according to claim 1, wherein an anti-sticking layer is arranged on the other side of the second steam barrier layer, and the anti-sticking layer is a release film or release paper.
6. The self-adhesive vapor barrier film according to claim 1, wherein the adhesive layer is one of self-adhesive modified asphalt, butyl rubber and pressure-sensitive adhesive.
7. The self-adhesive vapor-barrier film according to claim 6, wherein the self-adhesive modified asphalt comprises the following components: asphalt, a wetting tackifier, a first crosslinking agent and a second crosslinking agent; the first cross-linking agent is an inorganic layered compound modified by an aminosilane coupling agent, and the second cross-linking agent is SEBS-g-MAH.
8. The self-adhesive steam barrier film according to claim 7, wherein the self-adhesive modified asphalt comprises the following components in parts by weight: 50-65 parts of asphalt, 2-10 parts of SIS, 5-15 parts of SBS, 2-6 parts of tackifying resin, 1-10 parts of compatilizer, 4-15 parts of softener, 1-6 parts of wetting tackifier, 4-10 parts of first cross-linking agent, 2-8 parts of second cross-linking agent and 5-20 parts of filler.
9. The self-adhesive vapor-barrier film according to claim 8, wherein the asphalt is one or both of No. 90 asphalt and No. 70 asphalt;
the SIS is one or two of star-shaped SIS and linear SIS;
the SBS is one or two of star SBS and linear SBS;
the tackifying resin is one or more of petroleum resin, rosin resin, terpene resin and coumarone resin;
the compatilizer is aromatic oil;
the softener is one or two of three-line oil and two-line oil;
the wetting tackifier is polyisobutylene succinic acid pentaerythritol ester;
the filler is one or more of light calcium carbonate, heavy calcium carbonate, talcum powder and kaolin;
the inorganic layered compound modified by the aminosilane coupling agent is one or more of talcum powder, mica powder, graphite, montmorillonite and hydrotalcite.
10. The self-adhesive steam barrier film according to claim 7, wherein the preparation method of the self-adhesive modified asphalt comprises the following steps:
(1) adding a second cross-linking agent SEBS-g-MAH into 2/3 softening agent for pre-swelling for 8h to obtain pre-swelling liquid;
(2) heating asphalt to 160 ℃, adding a compatilizer and 1/3 softener, heating to 180 ℃, and uniformly stirring to obtain a mixed solution;
(3) controlling the temperature of the mixed solution to be 180-190 ℃, sequentially adding SBS and SIS, uniformly stirring, adding the pre-swelling solution after the SBS and the SIS are completely swelled and dissolved, and uniformly stirring;
(4) and controlling the temperature of the mixed solution to be 150-160 ℃, continuously adding the first cross-linking agent, uniformly stirring, then adding the wetting tackifier and the tackifying resin, uniformly stirring, finally adding the filler, and uniformly stirring to obtain the adhesive modified asphalt.
CN202210098509.9A 2022-01-27 2022-01-27 Self-adhesion vapour barrier film Pending CN114536918A (en)

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