CN114605936A - Waterproof roll, preparation method thereof and preparation method of roughened surface layer - Google Patents
Waterproof roll, preparation method thereof and preparation method of roughened surface layer Download PDFInfo
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- CN114605936A CN114605936A CN202210096461.8A CN202210096461A CN114605936A CN 114605936 A CN114605936 A CN 114605936A CN 202210096461 A CN202210096461 A CN 202210096461A CN 114605936 A CN114605936 A CN 114605936A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/405—Adhesives in the form of films or foils characterised by release liners characterised by the substrate of the release liner
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
- C09J2483/005—Presence of polysiloxane in the release coating
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Abstract
The invention belongs to the technical field of waterproof materials, and relates to a waterproof roll, a preparation method of the waterproof roll and a preparation method of a roughened surface layer. The waterproof roll material comprises: the surface layer, the modified asphalt layer and the polyolefin release film of the waterproof roll are sequentially arranged; the modified asphalt layer is positioned between the surface layer of the waterproof roll and the polyolefin release film; the polyolefin release film comprises: a polyolefin polymer matte finish and an organic polymer hardened barrier coating; an organic polymer hardened release coating is coated on at least one surface of the roughened surface layer; the matte finish comprises a polyolefin polymer and a micropowder material embedded therein, at least a portion of the micropowder material protruding from the base film of the matte finish, the micropowder material being free of a change in state below 240 ℃. The rough surface of the polyolefin release film does not contain any foaming substance and coarse particle substance, does not contain a sharp raised structure, does not damage the structure and the performance of the substrate film, and solves the problem of the uniformity of release coating, so that the release film is easier to separate from a coiled material.
Description
Technical Field
The invention belongs to the technical field of waterproof materials, and particularly relates to a waterproof roll, a preparation method of the waterproof roll and a preparation method of a roughened surface layer.
Background
The release film is an important anti-sticking and isolating functional material of the self-adhesive modified asphalt waterproof coiled material. CN204020090U discloses a release film with an embossed structure, which selects a series of semi-destructive protruding points in the film, and buffers the residual local stress during the curling and storage of the asphalt coiled material, so as to improve the wrinkle state of the surface layer of the coiled material. However, the embossing is of a sharp and soft protruding structure, and is very easy to inlay in the asphalt self-adhesive layer under the action of pressure, so that an anchoring structure is formed between the release film and the self-adhesive layer, and the embossing is difficult to tear in the construction process. CN102666094A discloses a release film formed on a base film and containing more than one protrusions containing cured products of a photo-curable resin composition, the protrusions of this structure are also easily embedded inside an asphalt self-adhesive layer, thereby causing difficulty in tearing off the film during construction, and simultaneously, due to the lack of a barrier layer, it is not possible to reduce the migration of small molecules in asphalt and glue, which greatly shortens the service life of the waterproof roll.
Through investigation, at present, there is another technique of adding hollow microspheres having an expansion effect at a certain temperature to a base film and roughening a surface structure by using at least one volatile organic compound in the hollow microspheres. However, this process is difficult to control during the process, and the "destructive" roughening is very likely to destroy the structure of the release film itself.
In summary, the current release film roughening treatment methods include the following three methods:
1) the method adopts a compression roller with a certain grain structure to press under certain temperature and pressure to realize roughening treatment of the surface of the base film.
2) The surface of the base film is roughened by forming uneven spots on the surface of the base film using a composition containing a photocurable resin.
3) Hollow microspheres with expansion function at a certain temperature are added, and roughening treatment of the surface structure is realized by utilizing at least one volatile organic compound in the hollow microspheres.
Through the analysis, the three roughening treatment modes of the release film cannot effectively solve the problem that the release film is effectively separated from the coiled material, and the structure of the substrate film can be damaged.
In order to solve the above problems, the present invention achieves roughening of the surface of a substrate by adding a high-melting organic-inorganic solid particulate material to a polymer carrier, utilizing the thermodynamic difference between the polymer carrier and the organic-inorganic solid particulate material. The rough surface of the invention does not contain sharp raised structures in the embossing release film, but is in a flat plate grain shape, and does not damage any structure and performance of the substrate film; meanwhile, the structure also better solves the problem of uniformity of release coating, and the release force is uniform and stable. The polyolefin release film disclosed by the invention is uniform and stable in release force and low in residual connection, and the fluctuation of the release force is less than 10% after long-term storage, so that the release film is easier to separate from a coiled material, asphalt residue is not easy to occur after stripping, and the construction efficiency is improved. Furthermore, the waterproof coiled material with the polyolefin release film has excellent self-adhesion retention rate, and the self-adhesion of the asphalt coiled material is kept above 85% after long-term storage. Furthermore, the waterproof roll with the polyolefin release film has excellent wrinkle resistance, and the using effect of the waterproof roll material in construction application can be effectively improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a waterproof coiled material which is provided with a polyolefin release film, wherein the rough surface of the polyolefin release film does not contain any foaming substance, coarse particle substance or sharp raised structure, and does not damage the structure and the performance of a substrate film; meanwhile, the structure also solves the problem of the uniformity of release coating, so that the release force of the polyolefin release film is uniform and stable and the residual connection is low, the fluctuation of the release force is less than 10 percent after long-term storage, the release film is easier to separate from the coiled material and asphalt residue is not easy to exist after stripping, and the construction efficiency is improved; further, the waterproof roll also has excellent self-adhesion retention.
In order to achieve the above object, the present invention provides a waterproof roll, a surface layer, a modified asphalt layer and a polyolefin release film of the waterproof roll; the modified asphalt layer is positioned between the surface layer of the waterproof roll and the polyolefin release film; the polyolefin release film comprises: a polyolefin polymer matte finish and an organic polymer hardened barrier coating; the organic polymer hardening isolation coating is coated on at least one surface of the roughened surface layer; the matte finish comprises a polyolefin polymer and a micropowder material embedded therein, at least a portion of the micropowder material protruding from the base film of the matte finish, the micropowder material being free of a change in state below 240 ℃.
The invention provides a preparation method of a waterproof coiled material, which is characterized by comprising the following steps: laminating other layers except the organic polymer hardening isolation coating in a mould to prepare a film in one step, coating slurry of the organic polymer hardening isolation coating on at least one surface of the film, then thermally curing to form the polyolefin release film, attaching one surface of the modified asphalt layer to the polyolefin release film, and compounding the surface layer of the waterproof coiled material on the other surface to form the waterproof coiled material;
the die is preferably any one of a circular die and a flat die;
the preparation mode of the film is preferably selected from any one of a casting mode, a co-extrusion film blowing mode and a co-extrusion film blowing-extrusion mode;
the coating mode is preferably any one of extrusion coating and transfer coating;
the thermal curing is preferably ultraviolet light high-pressure mercury lamp thermal curing; the power of the high-pressure mercury lamp is preferably 10-50 kilowatts, and the heat curing temperature is preferably 100-140 ℃;
the film is preferably subjected to surface roughening and/or corona treatment before coating; the surface roughening is preferably formed by embossing treatment through a roller with lines on the surface; the temperature of the embossing treatment is preferably not more than 130 ℃ and the pressure is not more than 10 kgf; the depth of the roller grain is preferably 0.5 to 10% of the thickness of the base film of the roughened surface layer (R).
In a third aspect, the present invention provides a process for preparing a matte finish, comprising: blending the micro powder particles and the polyolefin polymer, melting and extruding, and carrying out casting cooling to form the roughened surface layer;
the temperature of the melt extrusion is preferably 150-250 ℃;
the addition amount of the fine powder particles is preferably 3 to 20% and the addition amount of the polyolefin polymer is preferably 80 to 97%, based on the total weight of the fine powder particles and the polyolefin polymer.
The invention has the following beneficial effects:
1) the rough surface adopts special pattern design, the coverage of the release agent can be ensured under the condition of lower coating gram weight of the release agent, and the raw material cost is saved.
2) The waterproof coiled material can effectively improve the wrinkles in the storage and use processes of the waterproof coiled material, and the waterproof performance is improved.
3) The release force is stable and the residual connection is low, the fluctuation of the release force is less than 10 percent after long-term storage, so that the release film is easier to separate from the coiled material and is not easy to have asphalt residue after being stripped, and the construction efficiency is improved.
4) The rough surface does not contain any foaming substance and coarse particle substance, is prepared by mould pressing, and is simple, convenient and practical.
5) Compared with the existing embossing release film, the rough surface of the invention does not contain sharp raised structures in the embossing release film, but is in a flat plate grain shape, and does not damage any structure and performance of the substrate film; meanwhile, the structure also better solves the problem of uniformity of release coating, and the release force is uniform and stable.
6) Compared with the existing PE and PP release films, the release film has a multilayer structure with a rough structure functional layer on the surface, fully plays the functional role of each structure by the function superposition of a plurality of functional layers, effectively improves the wrinkles of the waterproof roll in the storage and use processes, and improves the waterproof performance.
7) Compared with the existing release film, the release film can also reduce the migration of small molecules in asphalt and glue water, reduce the oxygen communication between air and the self-adhesive layer, improve the durability of the self-adhesive layer and prolong the service life of the waterproof coiled material.
8) Compared with the existing release film, the release film has small change range of the peeling force when being attached to the coiled material and stable film tearing performance. The adhesive tape is stored for 50 days under natural conditions, when the white adhesive tape is used as an anti-yellowing test method, the color difference of the adhesive tape is less than 5, and the conventional release film has serious color difference.
9) Compared with the existing coiled material, the waterproof coiled material with the release film has excellent viscosity retention, and the self-adhesiveness retention rate is more than 85% in the long-term storage of the waterproof coiled material.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 is a schematic cross-sectional view of a roll for waterproofing according to example 1 of the present invention.
Fig. 2 is a schematic cross-sectional view of a waterproofing membrane in example 2 of the present invention.
Fig. 3 is a schematic cross-sectional view of a waterproofing membrane in example 3 of the present invention.
Fig. 4 is a schematic view of the embossed pattern on the surface of the polyolefin release film of the waterproof roll in the embodiment of the invention.
J-surface layer of waterproof roll, T-modified asphalt layer, R-surface layer of polyolefin polymer, Si-organic polymer hardening and isolating coating, P-barrier layer, a-polyolefin polymer layer, d-modified adhesive layer
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.
The present invention provides a waterproof roll material, comprising: the waterproof roll comprises a surface layer J, a modified asphalt layer T and a polyolefin release film of a waterproof roll; the modified asphalt layer T is positioned between the surface layer J of the waterproof roll and the polyolefin release film; the polyolefin release film comprises: a polyolefin polymer matte finish R and an organic polymer hardened release coating Si; the organic polymer hardening isolation coating Si is coated on at least one surface of the roughening surface layer R; the matte surface layer R comprises a polyolefin polymer and a micropowder material embedded therein, at least part of the micropowder material protrudes from the base film of the matte surface layer R, and the micropowder material has no physical change below 240 ℃.
The solid state-free change means that the physical state changes such as melting, expansion and the like do not occur.
In the release film, the roughened surface layer is formed by organic and/or inorganic micro powder with a certain size, the micro powder material is preferably organic and/or inorganic filler with a non-hollow structure, most preferably silica micro powder and acrylic resin microspheres, and the micro powder or the microspheres are distributed in the roughened layer R and still keep a complete structural shape and interlayer positions in the high-temperature high-speed processing process, so that the roughened surface layer has a stable roughened structure after the whole release film is formed. Because the device is integrally formed and does not have a chemical expansion process in the process, the quality control is convenient and the equipment investment is low.
The roughened surface layer does not contain any foaming substance and coarse particle substance, is prepared by mould pressing, and is simple, convenient and practical.
Preferably, the polyolefin release film further comprises: a barrier layer P and at least one modified adhesive layer.
The modified adhesive layer is positioned between the barrier layer P and the roughened surface layer R.
The organic polymer hardened release coating Si is coated on the outer surface of at least one of the matte finish layers R.
Preferably, the polyolefin release film further comprises at least one polyolefin polymer layer.
The polyolefin polymer layer is in contact with the matte finish R and/or the modified adhesive layer.
Compared with the existing PE and PP release films, the release film has a multilayer structure with a rough structure functional layer on the surface, fully plays the functional role of each structure by the function superposition of a plurality of functional layers, effectively improves the wrinkles of the waterproof roll in the storage and use processes, and improves the waterproof performance.
Compared with the existing release film, the release film can also reduce the migration of small molecules in asphalt and glue water, reduce the oxygen communication between air and a self-adhesive layer, improve the durability of the self-adhesive layer and prolong the service life of the waterproof roll.
According to the invention, the surface layer J of the waterproof roll is selected from any one of a composite film, a hot melt film and gravel.
The raw material of the modified asphalt layer T is a mixture of polymer modified asphalt, tackifying resin and softening oil.
The polyolefin polymer in the polyolefin polymer roughening surface layer R is at least one selected from the group consisting of homo-polypropylene, co-polypropylene, high density polyethylene, linear low density polyethylene, metallocene polyethylene and thermoplastic polyolefin elastomer.
The micro powder material is organic or inorganic filler with a solid structure, and is preferably selected from at least one of polyacrylic resin microspheres and silica micro powder.
The particle size of the micro powder material is 0.1-280 microns, and preferably 0.5-180 microns.
The size of the base film of the micro-powder material protruding the roughening surface layer R is not more than 4 microns.
The mass fraction of the fine powder particles is preferably 3 to 20% and the mass fraction of the polyolefin polymer is preferably 80 to 97% based on the total mass of the matte surface layer R.
The thickness of the matte surface layer R is 1 to 10 micrometers, preferably 3 to 7 micrometers.
Specifically, at least one surface of the roughened surface layer R is provided with grains.
The organic polymer hardening isolation coating Si is coated on the surface with the grain of the roughened surface layer R.
The texture is preferably embossing roller texture, and the shape of the texture is preferably any one of curve shape, reticulate line shape, dendritic shape, rectangle shape, diamond shape and polygon shape.
The depth of the grain is preferably 0.5 to 10% of the thickness of the base film of the matte layer R.
The roughened surface layer adopts special pattern design, the coverage of the release agent can be ensured under the condition of lower coating gram weight of the release agent, and raw materials are saved.
The non-continuous grain pattern is used for improving the wrinkle problem generated during the storage of the coiled material, is easier to peel and does not remain after peeling.
Compared with the existing embossing release film, the roughening surface layer does not contain sharp raised structures in the embossing release film, but is in a flat plate grain shape, and does not damage any structure and performance of the substrate film; meanwhile, the structure also better solves the problem of uniformity of release coating, and the release force is uniform and stable.
According to the invention, the slurry of the organic polymer hardening isolation coating Si is any one of epoxy modified organic siloxane compound, organic acrylate modified organic siloxane compound, vinyl organic siloxane compound and fluorine-silicon polymer.
The thickness of the organic polymer hardening isolation coating Si is 0.2-1.5 micrometers.
According to the invention, the raw material of the barrier layer P is any one of polyamide and ethylene-vinyl alcohol copolymer, and the thickness of the barrier layer P is 1-10 microns, preferably 2-5 microns.
The ethylene content in the ethylene-vinyl alcohol copolymer is preferably 21 mol% to 38 mol%.
The raw material of the modified bonding layer is at least one of maleic anhydride modified polyethylene and maleic anhydride modified polypropylene.
The modified tie layer has a thickness of 1 to 7 microns, preferably 3 to 5 microns.
Specifically, the polyolefin polymer in the polyolefin polymer layer is the same as or different from the polyolefin polymer in the roughened surface layer R, and is selected from at least one of homo-polypropylene, co-polypropylene, high density polyethylene, linear low density polyethylene, metallocene polyethylene and thermoplastic polyolefin elastomer;
the thickness of the polyolefin polymer layer is 1 to 10 microns, preferably 3 to 7 microns.
The invention also provides a preparation method of the waterproof roll, which comprises the following steps: laminating other layers except the organic polymer hardening isolation coating Si in a mould to prepare a film in one step, coating slurry of the organic polymer hardening isolation coating Si on at least one surface of the film, then thermally curing to form the polyolefin release film, attaching one surface of the modified asphalt layer T to the polyolefin release film, and compounding the surface layer J of the waterproof roll on the other surface to form the waterproof roll;
the die is preferably any one of a circular die and a flat die;
the preparation mode of the film is preferably selected from any one of a casting mode, a co-extrusion film blowing mode and a co-extrusion film blowing-extrusion mode;
the coating mode is preferably any one of extrusion coating and transfer coating;
the thermal curing is preferably ultraviolet light high-pressure mercury lamp thermal curing; the power of the high-pressure mercury lamp is preferably 10-50 kilowatts, and the heat curing temperature is preferably 100-140 ℃;
the film is preferably subjected to surface roughening and/or corona treatment before coating; the surface roughening is preferably formed by embossing treatment through a roller with lines on the surface; the temperature of the embossing treatment is preferably not more than 130 ℃ and the pressure is not more than 10 kgf; the depth of the roller grain is preferably 0.5 to 10% of the thickness of the base film of the roughened surface layer R.
The invention also provides a method for preparing a roughened surface layer, which comprises the following steps: and blending the micro powder particles and the polyolefin polymer, melting and extruding, and performing casting cooling to form the roughened surface layer.
The temperature of the melt extrusion is preferably 150-250 ℃.
The addition amount of the fine powder particles is preferably 3 to 20% and the addition amount of the polyolefin polymer is preferably 80 to 97%, based on the total weight of the fine powder particles and the polyolefin polymer.
The polyolefin release film has at least one of the following characteristics: the retention rate of the bonding stripping force of the asphalt self-adhesive layer/the aluminum plate after thermal aging is more than or equal to 75 percent, preferably more than or equal to 80 percent; the fluctuation of the release force is less than 20 percent, preferably less than 10 percent; the peeling force range of the release film/asphalt coiled material is 5-30 g/25 mm; the 50-day yellowing resistance color difference is less than 15, preferably less than 10.
The retention rate test of the bonding peeling force of the asphalt self-adhesive layer/aluminum plate after thermal aging is carried out according to GB/T23341, and the method comprises the following steps: the self-adhesive asphalt with the release film is placed in a 70 ℃ oven for heat treatment for 7 days and then tested.
The fluctuation test of the release force is carried out according to GB/T25256, and the method comprises the following steps: the standard release force of the release film was tested after 50 days storage period of the self-adhesive asphalt with release film.
The release force range test is carried out according to GB/T25256, and the method comprises the following steps: the self-adhesive asphalt with the release film was stored for a long period of time and tested for the range of variation in peel force during the process.
The non-yellowing 50-day test is carried out according to an internal test method of an enterprise, and the method comprises the following steps: and (3) attaching the white film adhesive tape to the non-silicon surface of the release film, and testing the surface color difference of the adhesive tape before and after long-time storage.
The present invention is explained in more detail by examples, comparative examples and test examples.
Comparative example 1
The waterproof roll comprises a surface layer of the waterproof roll, a modified asphalt layer and a polyolefin release film, wherein the polyolefin release film consists of an embossed raised structure layer and a hardened isolation coating, and the total thickness is 20 micrometers; the thickness of the embossed convex structure layer R is 19.5 micrometers, the embossed convex structure layer R is composed of 100% homopolymerized polypropylene, the thickness of the hardening isolation coating Si is 0.5 micrometer, and the hard polysiloxane silicone oil layer is formed after UV light curing. Blowing the homopolymerized polypropylene into a film with the thickness of 19.5 microns by a screw extruder at 220-250 ℃, and passing through an extrusion roller with sharp protrusions on the surface on line to form an embossing protrusion structure layer; and then transferring the film to a coating roller to uniformly coat the rough surface, and curing and forming the film by UV light curing equipment to form the polyolefin release film. And coating the silicon-coated layer of the polyolefin release film with modified asphalt in a tape casting or dip coating mode, and compounding a hot melt film surface layer to obtain the waterproof roll.
Example 1
This example is for explaining the method for producing a waterproof roll of the present invention.
The waterproof roll comprises a surface layer J of the waterproof roll, a modified asphalt layer T and a polyolefin release film, wherein the polyolefin release film consists of a polyolefin polymer roughened surface layer R and an organic polymer hardening isolation coating Si, and the total thickness is 20 mu m; the R thickness of the polyolefin polymer roughened surface layer is 19.5 micrometers, the R thickness is composed of 100% of homopolymerized polypropylene and 15% of silicon dioxide micropowder by mass, and the Si thickness of the organic polymer hardened isolation coating is 0.5 micrometer and is a hard polysiloxane silicone oil layer formed after UV light curing. Blending silicon dioxide micro powder and homopolymerized polypropylene, blowing a film by a screw extruder at 220-250 ℃ to form a film with the thickness of 19.5 microns, and performing extrusion roller with the surface formed by points and curves to form a polyolefin polymer roughened surface layer R; and then transferring the film to a coating roller to uniformly coat the organic polymer hardening isolation coating Si slurry on the rough surface, and forming the polyolefin release film after curing and molding by UV light curing equipment. And coating the silicon-coated layer of the polyolefin release film with modified asphalt in a tape casting or blade coating mode, and then compounding a hot melt film surface layer to obtain the waterproof roll.
Example 2
This example is for explaining the method of producing the waterproof roll of the invention.
The waterproof roll comprises a surface layer J of the waterproof roll, a modified asphalt layer T and a polyolefin release film, wherein the thickness of the polyolefin release film is 30 micrometers, and the polyolefin release film consists of a polyolefin polymer roughened surface layer R, a polyolefin polymer layer a, a modified binder layer d, a barrier layer P and an organic polymer hardening isolation coating Si. Wherein, the thickness of the polyolefin polymer roughened surface layer R is 3.9 microns, and the roughened surface layer R consists of 55 percent of High Density Polyethylene (HDPE), 40 percent of Linear Low Density Polyethylene (LLDPE), 5 percent of homopolymerized polypropylene (MPP) and 10 percent of silicon dioxide micropowder by mass; the polyolefin polymer layer a has a thickness of 5 μm and consists of 55% Linear Low Density Polyethylene (LLDPE) and 45% High Density Polyethylene (HDPE); the thickness of the modified adhesive layer d is 4 micrometers, and the modified adhesive layer d is composed of 100% maleic anhydride modified polyethylene; the barrier layer P was 4 microns thick and comprised of 100% nylon 6. Blending the silicon dioxide micro powder with High Density Polyethylene (HDPE), Linear Low Density Polyethylene (LLDPE) and homopolymerized polypropylene (MPP), and blowing the mixture by a screw extruder at 220-250 ℃ to form a polyolefin polymer roughened surface layer R with the thickness of 3.9 microns; superposing the polyolefin polymer roughened surface layer R and other layers in sequence and then co-extruding and blowing a film; and then coating slurry of an organic polymer hardening isolation coating Si after an extrusion roller with a prefabricated point and curve on the surface, and finally forming a polyolefin release film after thermosetting molding, wherein the thickness of the organic polymer hardening isolation coating Si is 0.2 microns, and coating a modified asphalt and then compounding a composite film surface layer on the silicon coating layer of the polyolefin release film by adopting a tape casting or blade coating mode to obtain the waterproof roll.
Example 3
This example is for explaining the method of producing the waterproof roll of the invention.
The waterproof roll comprises a surface layer J of the waterproof roll, a modified asphalt layer T and a polyolefin release film, wherein the thickness of the polyolefin release film is 20 micrometers, and the polyolefin release film consists of a polyolefin polymer roughened surface layer R, a modified binder layer d, a barrier layer P and an organic polymer hardening isolation coating Si. Wherein, the thickness of the polyolefin polymer roughened surface layer R is 3.8 microns, and the roughened surface layer R consists of 40 percent of homopolymerized polypropylene, 60 percent of copolymerized polypropylene and 15 percent of polyacrylic resin microspheres in percentage by mass; the thickness of the modified adhesive layer is 4 microns, and the modified adhesive layer is composed of 100% maleic anhydride modified polypropylene; the barrier layer P was 4 microns thick and was 100% EVOH. Blending polyacrylic resin microspheres with homo-polypropylene and co-polypropylene, and blowing a film by a screw extruder at 220-250 ℃ to form a polyolefin polymer roughened surface layer R with the thickness of 3.8 microns; superposing the polyolefin polymer roughened surface layer R and other layers in sequence and carrying out coextrusion casting; and then coating slurry of an organic polymer hardening isolation coating Si after passing through an extrusion roller with a prefabricated point and curve formed surface, wherein the thickness of the organic polymer hardening isolation coating Si is 0.4 micron, finally forming a polyolefin release film after UV curing molding, coating a silicon coating layer of the polyolefin release film with modified asphalt by adopting a tape casting or blade coating mode, and then compounding a composite film surface layer to obtain the waterproof roll.
Test example 1
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of the self-adhesive asphalt coiled material for carrying out a silicone oil coating gram weight test, and the test method comprises the following steps: the test was carried out using an Oxford Lab-X3500 silicon coating tester, and the test results are shown in Table 1.
Test example 2
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of the self-adhesive asphalt coiled material for carrying out a release force test, and the test method comprises the following steps: the test was carried out using a Texas 7475 tape having a width of 25mm, and the test results are shown in Table 1.
Test example 3
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of self-adhesive asphalt coiled materials for carrying out release film/asphalt stripping force test, and the test method comprises the following steps: a release film with the thickness of 25mm is attached to the surface of the asphalt self-adhesive layer, the asphalt self-adhesive layer is uniformly reciprocated for 3 times by a compression roller, the asphalt self-adhesive layer is parked for 24 hours, after debugging is completed, testing is carried out at the speed of 300mm/min, and the testing results are shown in table 1.
Test example 4
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of self-adhesive asphalt coiled materials to carry out asphalt self-adhesive layer/aluminum plate peeling force test according to GB/T23441, and the method comprises the following steps: the asphalt self-adhesive layer with the width of 50mm is stuck on an aluminum plate, and is rolled back and forth for 3 times by a compression roller, the rolling roller is parked for 24 hours, and then the test is carried out at the speed of 100mm/min, and the test results are shown in table 1.
Test example 5
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of the self-adhesive asphalt coiled material, and the retention rate of the bonding peeling force of the asphalt self-adhesive layer/aluminum plate after thermal aging is tested according to GB/T23341, and the method comprises the following steps: the self-adhesive asphalt with the release film was placed in an oven at 70 ℃ for heat treatment for 7 days and then tested, and the test results are shown in table 1.
Test example 6
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of self-adhesive asphalt coiled materials to carry out the fluctuation test of release force, and the test is carried out according to GB/T25256, and the method comprises the following steps: the release film was tested for its standard release force after 50 days storage period for self-adhesive asphalt with release film, the test results are shown in table 1.
Test example 7
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of the self-adhesive asphalt coiled material to carry out a release force range test, and the test is carried out according to GB/T25256, and the method comprises the following steps: the self-adhesive asphalt with the release film was stored for a long period of time and tested for the range of variation in peel force during the test, the results of which are shown in table 1.
Test example 8
The polyolefin release film prepared in the comparative example and the examples 1 to 3 is applied to the performance of the self-adhesive asphalt coiled material for a 50-day non-yellowing test, and the test is carried out according to an internal test method of an enterprise, wherein the method comprises the following steps: the white film adhesive tape was attached to the non-silicon surface of the release film, and the color difference of the surface of the adhesive tape before and after long-term storage was measured, with the test results shown in table 1.
TABLE 1
As can be seen from the comparative data in table 1, the properties of example 3 are the most excellent. Coating grammes per square on silicone oilFlour, example 3 is 0.4g/m2The coated grammage of the release agents of the embodiment 1, the embodiment 2 and the comparative example 1 is also very low, which shows that the covering performance of the release agent can be ensured under the condition of lower coated grammage of the release agent by adopting special pattern design on the rough surface. Examples 1-3 were all lower in release film/asphalt peel force, indicating that the matte finish R embedded with the micropowder material had excellent peel force. In terms of the appearance of the asphalt coiled material, the examples 1 to 3 have no wrinkles, and the functional superposition of a plurality of functional layers in the release film improves the wrinkle resistance of the release film. Examples 1-3 performed well in terms of retention of the peel strength of the asphalt self-adhesive layer/aluminum panel bond after heat aging, indicating that the embedded micro-powder material roughened surface layer R was not readily heat-bondable to the asphalt self-adhesive layer. In the test of the fluctuation of the release force, the fluctuation of the release force of the examples 1 to 3 is small along with the change of time, which shows that the release film coated with silicon after adopting the rough structure has stable performance. In terms of the range of the release force, the change range of the examples 1 to 3 is very small in the long-term storage process of the asphalt coiled material, which shows that the release film coated with silicon by adopting a rough structure and a UV curing mode has stable performance and excellent release force with the asphalt coiled material. In a test of 50 days of yellowing resistance, the color difference change of the examples 1-3 is obviously better than that of a comparative example, which shows that the structural design of the roughening layer improves the yellowing resistance to a certain extent, and the yellowing resistance is effectively improved by the structure of a plurality of functional layers.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A waterproofing membrane characterized in that said waterproofing membrane comprises: a surface layer (J) of the waterproof roll, a modified asphalt layer (T) and a polyolefin release film;
the modified asphalt layer (T) is positioned between the surface layer (J) of the waterproof roll and the polyolefin release film;
the polyolefin release film comprises: a polyolefin polymer matte finish (R) and an organic polymer hardened release coating (Si);
said organic polymer hardening barrier coating (Si) is applied to at least one side of said roughened surface layer (R);
the matte surface (R) comprises a polyolefin polymer and a micropowder material embedded therein, at least part of the micropowder material protruding from the base film of the matte surface (R), the micropowder material being free of a change in state below 240 ℃.
2. A sheet for waterproofing according to claim 1, wherein said polyolefin release film further comprises: a barrier layer (P) and at least one modified adhesive layer;
the modified adhesive layer is positioned between the barrier layer (P) and the roughened surface layer (R);
the organic polymer hardening barrier coating (Si) is coated on the outer surface of at least one of the matte finish layers (R).
3. A roll according to claim 1 wherein said polyolefin release film further comprises at least one polyolefin polymer layer; the polyolefin polymer layer is in contact with the matte finish (R).
4. A roll as claimed in claim 2, wherein said polyolefin release film further comprises at least one polyolefin polymer layer; the polyolefin polymer layer is in contact with the matte finish (R) and/or the modified adhesive layer.
5. A roll as claimed in claim 1, wherein the face layer (J) of the roll is selected from any one of a composite film, a hot-melt film, and gravel;
the raw material of the modified asphalt layer (T) is a mixture of polymer modified asphalt, tackifying resin and softening oil;
the polyolefin polymer in the polyolefin polymer roughened surface layer (R) is selected from at least one of homo-polypropylene, co-polypropylene, high density polyethylene, linear low density polyethylene, metallocene polyethylene and thermoplastic polyolefin elastomer;
the micro powder material is organic or inorganic filler with a solid structure, and is preferably selected from at least one of polyacrylic resin microspheres and silica micro powder;
the particle size of the micro powder material is 0.1-280 microns, preferably 0.5-180 microns;
the size of the base film of the micro-powder material protruding the roughened surface layer (R) is not more than 4 microns;
the mass fraction of the fine powder particles is preferably 3 to 20% and the mass fraction of the polyolefin polymer is preferably 80 to 97%, based on the total mass of the roughened surface layer (R);
the thickness of the roughened surface layer (R) is 1-22 microns, preferably 3-20 microns.
6. A waterproofing roll according to any one of claims 1 to 4, wherein said roughened surface layer (R) has a texture on at least one side;
the organic polymer hardening isolation coating (Si) is coated on the textured surface of the roughened surface layer (R);
the texture is preferably embossing roller texture, and the shape of the texture is preferably any one of curve, reticulate pattern, tree-like shape, rectangle, rhombus and polygon;
the depth of the grain is preferably 0.5 to 10% of the thickness of the base film of the roughened surface layer (R);
the slurry of the organic polymer hardening isolation coating (Si) is any one of an epoxy modified organic siloxane compound, an organic acrylate modified organic siloxane compound, a vinyl organic siloxane compound and a fluorine-silicon polymer;
the thickness of the organic polymer hardening isolation coating (Si) is 0.2-1.5 microns.
7. The waterproofing membrane according to any one of claims 2 or 4, wherein the barrier layer (P) is made of any one of polyamide and ethylene-vinyl alcohol copolymer, and has a thickness of 1 to 10 μm, preferably 2 to 5 μm;
the ethylene content in the ethylene-vinyl alcohol copolymer is preferably 21 mol% to 38 mol%;
the raw material of the modified bonding layer is at least one of maleic anhydride modified polyethylene and maleic anhydride modified polypropylene;
the modified tie layer has a thickness of 1 to 7 microns, preferably 3 to 5 microns.
8. A waterproofing roll according to any of claims 3 to 4, wherein the polyolefin polymer in said polyolefin polymer layer is the same as or different from the polyolefin polymer in said matte layer (R), and is selected from at least one of homopolypropylene, copolypropylene, high density polyethylene, linear low density polyethylene, metallocene polyethylene, thermoplastic polyolefin elastomer;
the thickness of the polyolefin polymer layer is 1 to 10 microns, preferably 3 to 7 microns.
9. The process for producing a waterproof roll as claimed in any one of claims 1 to 8, characterized in that the process comprises: and (2) laminating other layers except the organic polymer hardening isolation coating (Si) in a mould by one step to prepare a film, coating the slurry of the organic polymer hardening isolation coating (Si) on at least one surface of the film, then thermally curing to form the polyolefin release film, attaching one surface of the modified asphalt layer (T) and the polyolefin release film, and compounding the surface layer (J) of the waterproof roll on the other surface to form the waterproof roll.
The die is preferably any one of a circular die and a flat die;
the preparation mode of the film is preferably selected from any one of a casting mode, a co-extrusion film blowing mode and a co-extrusion film blowing-extrusion mode;
the coating mode is preferably any one of extrusion coating and transfer coating;
the thermal curing is preferably ultraviolet light high-pressure mercury lamp thermal curing; the power of the high-pressure mercury lamp is preferably 10-50 kilowatts, and the heat curing temperature is preferably 100-140 ℃;
the film is preferably subjected to surface roughening and/or corona treatment before coating; the surface roughening is preferably formed by embossing treatment through a roller with lines on the surface; the temperature of the embossing treatment is preferably not more than 130 ℃ and the pressure is not more than 10 kgf; the depth of the roller grain is preferably 0.5-10% of the thickness of the base film of the roughened surface layer (R);
the matte finish (R) is preferably prepared by: blending the micro powder particles and the polyolefin polymer, melting and extruding, and performing casting cooling to form the roughened surface layer (R);
the temperature of the melt extrusion is preferably 150-250 ℃;
the addition amount of the fine powder particles is preferably 3 to 20% and the addition amount of the polyolefin polymer is preferably 80 to 97%, based on the total weight of the fine powder particles and the polyolefin polymer.
10. The polyolefin release film of any one of claims 1-8, characterized in that it has at least one of the following characteristics:
the retention rate of the bonding stripping force of the asphalt self-adhesive layer/the aluminum plate after thermal aging is more than or equal to 75 percent, preferably more than or equal to 80 percent;
the fluctuation of the release force is less than 20 percent, preferably less than 10 percent;
the peeling force range of the release film/asphalt coiled material is 5-30 g/25 mm;
the 50-day yellowing resistance color difference is less than 15, preferably less than 10.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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