CN115534450A - High-weather-resistance multifunctional composite film for building enclosure and preparation method thereof - Google Patents

High-weather-resistance multifunctional composite film for building enclosure and preparation method thereof Download PDF

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Publication number
CN115534450A
CN115534450A CN202211197181.2A CN202211197181A CN115534450A CN 115534450 A CN115534450 A CN 115534450A CN 202211197181 A CN202211197181 A CN 202211197181A CN 115534450 A CN115534450 A CN 115534450A
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layer
woven fabric
weather
composite film
sms
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蒋凌宏
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Jiangsu Vable Construction Material Technology Co ltd
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Jiangsu Vable Construction Material 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
    • 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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • E04B1/66—Sealings
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a composite film, in particular to a high-weather-resistant multifunctional composite film for building enclosure and a preparation method thereof. It comprises a base layer and an outer surface layer. The outer surface layer is a weather-resistant plastic layer. The base layer is a composite non-woven fabric, the composite non-woven fabric contains SMS non-woven fabric, the upper surface of the SMS non-woven fabric is covered with an upper surface layer, the upper surface layer is a non-woven fabric layer, and the compactness and the smoothness of the upper surface layer are superior to those of a lower S layer, an M layer and an upper S layer of the SMS non-woven fabric. The outer surface layer covers the upper surface of the upper surface layer. After the composite membrane is compounded and bonded with the waterproof colloid, the composite membrane and the waterproof colloid are not easy to separate, and the prepared waterproof membrane has longer service life.

Description

High-weather-resistance multifunctional composite film for building enclosure and preparation method thereof
Technical Field
The invention relates to a composite film, in particular to a high-weather-resistant multifunctional composite film for building enclosure, which is high in composite bonding strength with a waterproof colloid and a preparation method thereof.
Background
The structure used for shading sun, sheltering from rain, shielding wind, insulating heat, sound, absorbing sound, cutting off light and the like in the building structure is called as a building envelope structure. Materials used for building envelopes are called building envelopes. The material prepared by compounding and bonding the high-weather-resistant multifunctional composite film for the building envelope and the waterproof colloid is one of building envelope materials.
At present, the traditional high-weather-resistant multifunctional composite film for building envelope is various plastic films such as PE, PET, aluminum-plastic composite film and the like. However, the plastic film and the waterproof colloid are in plane contact, the contact area is small, the composite bonding strength is not high, the waterproof colloid is sensitive to temperature, the colloid becomes hard along with the reduction of the temperature, the adhesive force between the adhesive films can be gradually attenuated until the adhesive films are completely separated, and the service life of the waterproof cloth prepared by adopting the traditional composite film is short.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high weather-resistant multifunctional composite film for building enclosure and a preparation method thereof.
To solve the above problems, the following technical solutions are provided
The high weather-resistant multifunctional composite film for building envelope comprises a base layer and an outer surface layer; the outer surface layer is a weather-proof plastic layer. The base layer is a composite non-woven fabric, the composite non-woven fabric contains SMS non-woven fabric, the upper surface of the SMS non-woven fabric is covered with an upper surface layer, the upper surface layer is a non-woven fabric layer, and the compactness and the smoothness of the upper surface layer are superior to those of a lower S layer, an M layer and an upper S layer of the SMS non-woven fabric. The outer surface layer covers the upper surface of the upper surface layer.
The upper surface layer is prepared by melt-blowing superfine short fibers on the upper surface of the SMS non-woven fabric and then carrying out surface compacting and calendaring treatment, so that the compactness and smoothness of the upper surface layer are superior to those of the lower S layer, the M layer and the upper S layer of the SMS non-woven fabric.
The lower S layer, the M layer and the upper S layer of the SMS non-woven fabric are all polyester non-woven fabrics.
The lower S layer of the SMS non-woven fabric is made of filament spun-bonded polyester fibers, the M layer of the SMS non-woven fabric is made of superfine polyester fibers which are melt-blown on the upper surface of the lower S layer, and the upper S layer of the SMS non-woven fabric is made of filament spun-bonded polyester fibers on the upper surface of the M layer.
The gram weight of the composite non-woven fabric is 60-120g, and the thickness of the composite non-woven fabric is 100-200 mu m.
The outer surface layer comprises a weather-resistant adhesive layer and a PVDF plastic film from bottom to top.
The outer surface layer is prepared by coating PVDF paint on the upper surface of the base layer.
The preparation method of the building envelope high weather-resistant multifunctional composite film is characterized by comprising the following steps:
first, preparing a composite nonwoven fabric
First, the lower S layer of the SMS nonwoven fabric was obtained by filament spun-bonding polyester fibers.
Then, the ultra-fine polyester fiber was melt-blown on the upper surface of the lower S layer of the SMS nonwoven fabric to obtain an M layer of the SMS nonwoven fabric.
And finally, spinning and bonding polyester fibers on the upper surface of the M layers of the SMS non-woven fabric to obtain the SMS non-woven fabric, wherein the three-layer structure of the SMS non-woven fabric is integrally formed.
Then, the upper surface of the SMS non-woven fabric is melt-blown with superfine short fibers, and then the surface is compacted and press finished to obtain the whole non-adhesive composite non-woven fabric; wherein the melting point of the superfine short fiber is below 170 ℃.
Second, preparing the high weather-resistant multifunctional composite film for building enclosure
Firstly, coating the weather-resistant adhesive on one side of a PVDF plastic film to obtain a weather-resistant adhesive layer, wherein the thickness of the PVDF plastic film is 15-40 mu m, and the weather-resistant adhesive is ensured to cover one side of the whole PVDF plastic film during coating.
And then, adhering the upper surface of the composite non-woven fabric to the side, far away from the PVDF plastic film, of the weather-resistant adhesive layer to obtain the building envelope high weather-resistant multifunctional composite film blank.
And then sequentially rolling, drying and curing the blank of the high-weather-resistant multifunctional composite film for the building envelope to obtain the high-weather-resistant multifunctional composite film for the building envelope.
The preparation method of the building envelope high weather-resistant multifunctional composite film is characterized by comprising the following steps:
first, preparing a composite nonwoven fabric
First, the lower S layer of the SMS nonwoven fabric was obtained by filament spun-bonding polyester fibers.
Then, the ultra-fine polyester fiber was melt-blown on the upper surface of the lower S layer of the SMS nonwoven fabric to obtain an M layer of the SMS nonwoven fabric.
And finally, spinning and bonding polyester fibers on the upper surfaces of the M layers of the SMS non-woven fabric to obtain the SMS non-woven fabric, wherein the three-layer structure of the SMS non-woven fabric is integrally formed.
Then, after the superfine short fibers are melt-blown on the upper surface of the SMS non-woven fabric, carrying out surface compacting and press polishing treatment to obtain the integral non-adhesive composite non-woven fabric; wherein the melting point of the superfine short fiber is below 170 ℃.
Second, preparing the high weather-resistant multifunctional composite film for building enclosure
Firstly, knife-coating a high-viscosity PVDF coating on the upper surface of a composite non-woven fabric to obtain a building envelope high-weather-resistant multifunctional composite film blank; wherein, when coating, the high-viscosity PVDF coating is ensured to cover the upper surface of the whole composite non-woven fabric, the dry glue thickness of the coating is 15-40 μm, and the infiltration of the coating is not more than 50% of the thickness of the non-woven fabric;
and then, drying, rolling and curing the building envelope high-weather-resistance multifunctional composite film blank in sequence to obtain the building envelope high-weather-resistance multifunctional composite film.
By adopting the scheme, the method has the following advantages:
the base layer of the building envelope high-weather-resistance multifunctional composite film is a composite non-woven fabric, the composite non-woven fabric comprises an SMS non-woven fabric, the upper surface of the SMS non-woven fabric is covered by an upper surface layer, the upper surface layer is a non-woven fabric layer, the compactness and the smoothness of the upper surface layer are superior to those of a lower S layer, an M layer and an upper S layer of the SMS non-woven fabric, and the outer surface layer covers the upper surface of the upper surface layer. The upper surface layer with high compactness and smoothness is arranged on the upper surface of the SMS non-woven fabric, so that the bonding force between the composite non-woven fabric and the outer surface layer is ensured, and the SMS non-woven fabric and the upper surface layer cannot fall off. Meanwhile, the multifunctional composite film adopts the composition of the SMS non-woven fabric and the anti-hydrocolloid, when the composite film is compounded, the anti-hydrocolloid and the three-dimensional space fiber net of the SMS non-woven fabric form an interpenetrating network structure, and three-dimensional solid contact is formed between the anti-hydrocolloid and the SMS non-woven fabric, so that the contact area between the anti-hydrocolloid and the SMS non-woven fabric is greatly increased, and the composite bonding strength between the anti-hydrocolloid and the SMS non-woven fabric is improved. Furthermore, the problem of glue film separation caused by low-temperature glue losing of the glue body is solved, and the service life of the waterproof cloth is greatly prolonged.
Drawings
FIG. 1 is a schematic view of a layered structure of a multifunctional composite membrane with high weather resistance for building envelope according to the present invention (embodiment I)
FIG. 2 is a schematic view of a layered structure of the multifunctional high weather-resistant composite film for building envelope according to the present invention in the second embodiment.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
Example one
As shown in fig. 1, the multifunctional composite film with high weather resistance for building envelope of this embodiment includes a base layer and an outer surface layer 3. The outer surface layer 3 is a weather-proof plastic layer. The base layer is a composite non-woven fabric, the gram weight of the composite non-woven fabric is 60-120g, and the thickness of the composite non-woven fabric is 100-200 mu m. The composite nonwoven fabric comprises an SMS nonwoven fabric 1. The lower S layer, the M layer and the upper S layer of the SMS non-woven fabric 1 are all polyester non-woven fabrics. The lower S layer of the SMS non-woven fabric 1 is made of filament spun-bonded polyester fibers, the M layer of the SMS non-woven fabric 1 is made of superfine polyester fibers which are melt-blown on the upper surface of the lower S layer, and the upper S layer of the SMS non-woven fabric 1 is made of filament spun-bonded polyester fibers on the upper surface of the M layer. The upper surface of the SMS non-woven fabric 1 is covered with an upper surface layer 2, and the upper surface layer 2 is a non-woven fabric layer. The upper surface layer 2 is prepared by melt-blowing superfine short fibers on the upper surface of the SMS non-woven fabric 1 and then carrying out surface compacting and calendaring treatment, so that the compactness and smoothness of the upper surface layer 2 are better than those of the lower S layer, the M layer and the upper S layer of the SMS non-woven fabric 1. The outer skin 3 covers the upper surface of the upper skin 2. The outer surface layer 3 comprises a weather-resistant adhesive layer 301 and a PVDF plastic film 302 from bottom to top. The outer surface layer 3 is prepared by coating PVDF paint on the upper surface of the base layer.
The lower S layer and the upper S layer of the SMS non-woven fabric 1 provide mechanical property and structural stability, and ensure that the longitudinal tension of the building envelope high-weather-resistant multifunctional composite film is not less than 300N/5cm and the transverse tension of the building envelope high-weather-resistant multifunctional composite film is not less than 150N/5cm.
The middle M layer of the SMS non-woven fabric 1 is a superfine fiber layer, and the structure of the upper S layer is more compact, so that the fluid permeation speed can be delayed, and the infiltration degree of colloid during compounding can be controlled.
The upper surface layer 2 is more compact and smooth relative to each layer below the upper surface layer, is convenient to carry out composite treatment with the outer surface layer 3 on the upper surface layer, can control the infiltration degree of the weather-resistant adhesive, ensures that the fiber layer of the lower surface still keeps a three-dimensional reticular space structure after the preparation of the composite membrane is finished, and avoids the integral gluing and hardening of the cloth cover.
The preparation method of the high-weather-resistant multifunctional composite film for building envelope comprises the following steps:
first, preparing a composite nonwoven fabric
First, the lower S layer of the SMS nonwoven fabric 1 was obtained by filament spun-bonding of polyester fibers.
Then, the M layers of the SMS nonwoven fabric 1 were obtained by melt-blowing ultrafine polyester fibers on the upper surface of the lower S layer of the SMS nonwoven fabric 1.
And then, spinning and bonding polyester fibers on the upper surfaces of the M layers of the SMS non-woven fabric 1 to obtain the SMS non-woven fabric 1, wherein the three-layer structure of the SMS non-woven fabric 1 is integrally formed.
And then, the upper surface of the SMS non-woven fabric 1 is melt-blown with superfine short fibers, and then the surface is compacted and press finished to obtain the integral non-adhesive composite non-woven fabric. Wherein the gram weight of the composite non-woven fabric is 60-120g, and the thickness is 100-200 μm. In this embodiment, the superfine short fibers are modified polyester, so as to ensure that the melting point of the superfine short fibers is below 170 ℃, so that the surface of the upper surface layer 2 is more convenient for densification and calendaring, and is more firmly bonded with the structural layer below the surface.
Second, preparing the high weather-resistant multifunctional composite film for building enclosure
Firstly, a weather-resistant adhesive is coated on one side of the PVDF plastic film 302 to obtain a weather-resistant adhesive layer 301, wherein the thickness of the PVDF plastic film 302 is 15-40 μm, and the weather-resistant adhesive is ensured to cover the whole one side of the PVDF plastic film 302 during coating.
And then, adhering the upper surface of the composite non-woven fabric to the side, far away from the PVDF plastic film 302, of the weather-resistant adhesive layer 301 to obtain the building envelope high weather-resistant multifunctional composite film blank. Because the upper surface layer 2 is more compact and smooth relative to the lower layers, the composite structure is convenient to be compounded with the PVDF plastic film 302 through the weather-resistant adhesive, the infiltration degree of the composite colloid on the upper surface can be controlled, the fiber layer on the lower surface still keeps a three-dimensional reticular space structure after the composite film is prepared, and the integral gluing and hardening of the cloth surface are avoided.
And then, sequentially rolling, drying and curing the building envelope high-weather-resistance multifunctional composite film blank to obtain the building envelope high-weather-resistance multifunctional composite film. Wherein, the drying tunnel used for drying is a plurality of temperature zones, the temperature is gradually increased, and the drying temperature is 40-115 ℃. The curing temperature is constant at 50-70 ℃ for 72h. The specific process flow of the rolling, drying and curing process is the prior art and is not described herein.
Carry out two
As shown in fig. 2, the multifunctional composite film with high weather resistance for building envelope of this embodiment includes a base layer and an outer surface layer 3. The outer surface layer 3 is a weather-resistant plastic layer. The base layer is a composite non-woven fabric, the gram weight of the composite non-woven fabric is 60-120g, and the thickness of the composite non-woven fabric is 100-200 mu m. The composite nonwoven fabric contains an SMS nonwoven fabric 1. The lower S layer, the M layer and the upper S layer of the SMS non-woven fabric 1 are all polyester non-woven fabrics. The lower S layer of the SMS non-woven fabric 1 is made of filament spun-bonded polyester fibers, the M layer of the SMS non-woven fabric 1 is made of superfine polyester fibers which are melt-blown on the upper surface of the lower S layer, and the upper S layer of the SMS non-woven fabric 1 is made of filament spun-bonded polyester fibers on the upper surface of the M layer. The upper surface of the SMS non-woven fabric 1 is covered with an upper surface layer 2, and the upper surface layer 2 is a non-woven fabric layer. The upper surface layer 2 is prepared by melt-blowing superfine short fibers on the upper surface of the SMS non-woven fabric 1 and then carrying out surface compacting and calendaring treatment, so that the compactness and smoothness of the upper surface layer 2 are better than those of the lower S layer, the M layer and the upper S layer of the SMS non-woven fabric 1. The outer surface layer 3 covers the upper surface of the upper surface layer 2. The outer surface layer 3 is prepared by coating PVDF paint on the upper surface of the base layer.
The preparation method of the building envelope high-weather-resistance multifunctional composite film comprises the following steps:
first, preparing a composite nonwoven fabric
First, the lower S layer of the SMS nonwoven fabric 1 was obtained by filament spun-bonding of polyester fiber.
Then, the M layers of the SMS nonwoven fabric 1 were obtained by melt-blowing ultrafine polyester fibers on the upper surface of the lower S layer of the SMS nonwoven fabric 1.
And then, spinning and bonding polyester fibers on the upper surfaces of the M layers of the SMS non-woven fabric 1 to obtain the SMS non-woven fabric 1, wherein the three-layer structure of the SMS non-woven fabric 1 is integrally formed.
And then, the upper surface of the SMS non-woven fabric 1 is melt-blown with superfine short fibers, and then the surface is compacted and press finished to obtain the integral non-adhesive composite non-woven fabric. Wherein the gram weight of the composite non-woven fabric is 60-120g, and the thickness is 100-200 μm. In this embodiment, the superfine staple fibers are ES bicomponent superfine fibers, so as to ensure that the melting point of the superfine staple fibers is below 170 ℃, so that the surface of the upper surface layer 2 is more convenient for densification and calendaring, and the bonding with the structural layer below the surface layer is more firm.
Second, preparing the high weather-resistant multifunctional composite film for building enclosure
Firstly, knife-coating a high-viscosity PVDF coating on the upper surface of a composite non-woven fabric to obtain a building envelope high-weather-resistant multifunctional composite membrane blank; wherein, when coating, the high-viscosity PVDF coating is ensured to cover the upper surface of the whole composite non-woven fabric, the dry glue thickness of the coating is 15-40 μm, and the infiltration of the coating is not more than 50% of the thickness of the non-woven fabric;
and then, drying, rolling and curing the building envelope high-weather-resistance multifunctional composite film blank in sequence to obtain the building envelope high-weather-resistance multifunctional composite film. Wherein, the drying tunnel used for drying is a plurality of temperature zones, the temperature is gradually increased, and the drying temperature is 40-135 ℃. The curing temperature is constant at 50-70 ℃ for 72h. The specific process flow of the rolling, drying and curing process is the prior art and is not described herein.
The waterproof film is prepared by adopting the high-weather-resistant multifunctional composite film for building enclosure
The process for preparing the high weather-resistant multifunctional composite film modified asphalt (or butyl rubber, other hot melt adhesives and pressure-sensitive adhesives) waterproof film comprises the steps of melting adhesive, tape casting (or blade coating and spray coating), laminating a release film, rolling and cooling.
The process for preparing the high weather-resistant multifunctional composite film liquid waterproof film comprises the following steps: treating a base layer, brushing an interface agent, coating a first coating, coating a second coating in a direction perpendicular to the first direction, thinly coating a third coating, simultaneously pasting the high weather-resistant multifunctional composite film for building enclosure, and maintaining.
The preparation process is the same as the process for preparing the two waterproof films by adopting a common plastic film in the prior art, belongs to the prior art and is not described herein again.
The outer surface layer 3PVDF fluorocarbon film/fluorocarbon coating of the building envelope high-weather-resistance multifunctional composite film has multiple functions of water impermeability, weather aging resistance, corrosion resistance, dirt resistance, self-cleaning, reflection heat insulation (white) and the like, the exposed service life is as long as 25 years and more, and the damage of aging factors such as ultraviolet light and the like to waterproof materials thereunder can be prevented, so that the service life of the waterproof layer is greatly prolonged. Moreover, the multi-layer three-dimensional reticular space of the composite membrane base cloth enables the composite membrane base cloth to form a stable interpenetrating network structure when being compounded with the hot melt adhesive and the waterproof coating, thereby solving the common problems of separation of an adhesive membrane and water and loss of prevention of the exposed waterproof layer structure caused by temperature change.

Claims (9)

1. A high weather-resistant multifunctional composite film for building enclosure comprises a base layer and an outer surface layer; the outer surface layer is a weather-resistant plastic layer; the SMS non-woven fabric composite base layer is characterized in that the base layer is a composite non-woven fabric, the composite non-woven fabric comprises an SMS non-woven fabric, an upper surface layer covers the upper surface of the SMS non-woven fabric, the upper surface layer is a non-woven fabric layer, and the compactness and the smoothness of the upper surface layer are superior to those of a lower S layer, an M layer and an upper S layer of the SMS non-woven fabric; the outer surface layer covers the upper surface of the upper surface layer.
2. The multifunctional composite film for building envelope with high weather resistance according to claim 1, wherein the upper surface layer is prepared by melt-blowing superfine short fibers on the upper surface of the SMS non-woven fabric and then performing surface densification and calendaring treatment, so as to ensure that the compactness and smoothness of the upper surface layer are superior to those of the lower S layer, the M layer and the upper S layer of the SMS non-woven fabric.
3. The multifunctional composite film for building envelope with high weather resistance of claim 2, wherein the lower S layer, the M layer and the upper S layer of the SMS non-woven fabric are all polyester non-woven fabrics.
4. The multifunctional composite film for building envelope with high weather resistance according to claim 3, wherein the lower S layer of the SMS non-woven fabric is made of filament spun-bonded polyester fiber, the M layer of the SMS non-woven fabric is made of superfine polyester fiber melt-blown on the upper surface of the lower S layer, and the upper S layer of the SMS non-woven fabric is made of filament spun-bonded polyester fiber on the upper surface of the M layer.
5. The multifunctional composite film with high weather resistance for building envelopes as claimed in claim 4, wherein the gram weight of the composite non-woven fabric is 60 to 120g, and the thickness is 100 to 200 μm.
6. The multifunctional composite film for building envelope with high weather resistance of claim 5, wherein the outer surface layer comprises a weather-resistant adhesive layer and a PVDF plastic film from bottom to top.
7. The multifunctional composite film with high weather resistance for building envelope of claim 5, wherein the outer surface layer is prepared by coating PVDF paint on the upper surface of the base layer.
8. The method for preparing the multifunctional composite film with high weather resistance for building envelopes of claim 6 is characterized by comprising the following steps:
first, preparing a composite nonwoven fabric
Firstly, obtaining a lower S layer of the SMS non-woven fabric by filament spun-bonded polyester fiber;
then, carrying out melt-blowing on the upper surface of the lower S layer of the SMS non-woven fabric to obtain an M layer of the SMS non-woven fabric;
then, spinning and bonding polyester fibers on the upper surface of the M layers of the SMS non-woven fabric to obtain the SMS non-woven fabric, wherein the three-layer structure of the SMS non-woven fabric is integrally formed;
then, the upper surface of the SMS non-woven fabric is melt-blown with superfine short fibers, and then the surface is compacted and press finished to obtain the whole non-adhesive composite non-woven fabric; wherein the melting point of the superfine short fiber is below 170 ℃;
second, preparing the multifunctional composite film with high weather resistance for building enclosure
Firstly, coating a weather-resistant adhesive on one side of a PVDF plastic film to obtain a weather-resistant adhesive layer, wherein the thickness of the PVDF plastic film is 15-40 mu m, and during coating, ensuring that the weather-resistant adhesive covers one side of the whole PVDF plastic film;
then, the upper surface of the composite non-woven fabric is attached to the side, far away from the weather-resistant adhesive layer of the PVDF plastic film, of the weather-resistant multifunctional composite film blank for the building enclosure;
and then, sequentially rolling, drying and curing the building envelope high-weather-resistance multifunctional composite film blank to obtain the building envelope high-weather-resistance multifunctional composite film.
9. The method for preparing the multifunctional composite film with high weather resistance for building envelopes as claimed in claim 7 is characterized by comprising the following steps:
first, preparing a composite nonwoven fabric
Firstly, obtaining a lower S layer of the SMS non-woven fabric by filament spun-bonded polyester fiber;
then, carrying out melt-blowing on the upper surface of the lower S layer of the SMS non-woven fabric to obtain an M layer of the SMS non-woven fabric;
then, spinning and bonding polyester fibers on the upper surface of the M layers of the SMS non-woven fabric to obtain the SMS non-woven fabric, wherein the three-layer structure of the SMS non-woven fabric is integrally formed;
then, after the superfine short fibers are melt-blown on the upper surface of the SMS non-woven fabric, carrying out surface compacting and press polishing treatment to obtain the integral non-adhesive composite non-woven fabric; wherein the melting point of the superfine short fiber is below 170 ℃;
second, preparing the high weather-resistant multifunctional composite film for building enclosure
Firstly, knife-coating a high-viscosity PVDF coating on the upper surface of a composite non-woven fabric to obtain a building envelope high-weather-resistant multifunctional composite film blank; wherein, when coating, the high-viscosity PVDF coating is ensured to cover the upper surface of the whole composite non-woven fabric, the dry glue thickness of the coating is 15-40 μm, and the infiltration of the coating is not more than 50% of the thickness of the non-woven fabric;
and then, drying, rolling and curing the blank of the high-weather-resistant multifunctional composite film for the building envelope in sequence to obtain the high-weather-resistant multifunctional composite film for the building envelope.
CN202211197181.2A 2022-09-29 2022-09-29 High-weather-resistance multifunctional composite film for building enclosure and preparation method thereof Pending CN115534450A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11268596A (en) * 1998-01-26 1999-10-05 Nissan Motor Co Ltd Automobile ceiling material
CN102115954A (en) * 2010-12-27 2011-07-06 杨丽娜 High-barrier non-woven fabric composite material, and manufacturing method and special equipment thereof
CN106117981A (en) * 2016-06-23 2016-11-16 江苏科德宝建筑节能科技有限公司 A kind of waterproof and breathable Antibiotic Membrane
CN108505629A (en) * 2018-02-27 2018-09-07 江苏屋堡建材科技有限公司 A kind of building enclosure multifunctional composite film
CN108998989A (en) * 2018-08-31 2018-12-14 福建冠泓工业有限公司 A kind of bacteriostatic non-woven cloth of high obstructing performance and preparation method thereof
JP2019116018A (en) * 2017-12-27 2019-07-18 七王工業株式会社 Laminated sheet
CN210257499U (en) * 2019-07-05 2020-04-07 上海顺灏新材料科技股份有限公司 PET composite non-woven fabric
CN112064199A (en) * 2020-09-07 2020-12-11 杭州恒邦实业有限公司 Preparation process of hot-rolled non-woven fabric

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11268596A (en) * 1998-01-26 1999-10-05 Nissan Motor Co Ltd Automobile ceiling material
CN102115954A (en) * 2010-12-27 2011-07-06 杨丽娜 High-barrier non-woven fabric composite material, and manufacturing method and special equipment thereof
CN106117981A (en) * 2016-06-23 2016-11-16 江苏科德宝建筑节能科技有限公司 A kind of waterproof and breathable Antibiotic Membrane
JP2019116018A (en) * 2017-12-27 2019-07-18 七王工業株式会社 Laminated sheet
CN108505629A (en) * 2018-02-27 2018-09-07 江苏屋堡建材科技有限公司 A kind of building enclosure multifunctional composite film
CN108998989A (en) * 2018-08-31 2018-12-14 福建冠泓工业有限公司 A kind of bacteriostatic non-woven cloth of high obstructing performance and preparation method thereof
CN210257499U (en) * 2019-07-05 2020-04-07 上海顺灏新材料科技股份有限公司 PET composite non-woven fabric
CN112064199A (en) * 2020-09-07 2020-12-11 杭州恒邦实业有限公司 Preparation process of hot-rolled non-woven fabric

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