CN115157809B

CN115157809B - Pre-laid waterproof coiled material and preparation method thereof

Info

Publication number: CN115157809B
Application number: CN202210645792.2A
Authority: CN
Inventors: 陈志伟; 杨小育; 龚兴宇; 黄祖行
Original assignee: Keshun Waterproof Technology Co Ltd
Current assignee: Keshun Waterproof Technology Co Ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2023-04-07
Anticipated expiration: 2042-06-09
Also published as: CN115157809A

Abstract

The application discloses a pre-paved waterproof roll and a preparation method thereof. The pre-paved waterproof roll comprises an anti-sticking layer, a self-adhesive layer and a main waterproof material layer which are sequentially stacked, wherein the anti-sticking layer comprises plastic mesh cloth; the self-adhesive layer comprises 100 parts of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, 100-200 parts of plasticizer, 100-300 parts of tackifying resin compound, 5-10 parts of antioxidant and 5-10 parts of light stabilizer. The pre-paved waterproof coiled material can fundamentally solve the problem that the anti-sticking layer falls sand, has excellent anti-sticking performance and ensures the construction efficiency; meanwhile, the water-resistant and water-proof adhesive has good adhesion with concrete and external force stripping resistance, and can prevent water channeling. In addition, the pre-paved waterproof coiled material also has excellent ultraviolet aging resistance, and can effectively prevent the phenomenon of falling off and glue opening of the coiled material caused by outdoor solarization.

Description

Pre-laid waterproof coiled material and preparation method thereof

Technical Field

The application belongs to the technical field of waterproof coiled materials, and particularly relates to a pre-paved waterproof coiled material and a preparation method thereof.

Background

The waterproof coiled material is a flexible building material product which can be curled into a roll shape and can prevent rainwater and underground water from leaking, is mainly used for building walls, roofs, tunnels, highways, refuse landfills and the like, is a first barrier for waterproofing of the whole project, and plays a vital role in the whole project.

The existing waterproof coiled material can be divided into a self-adhesive waterproof coiled material, a wet-laid waterproof coiled material and a pre-laid waterproof coiled material according to different construction processes. Traditional pre-paved waterproof roll structure can be divided into three layers: main part material, from viscose layer and antiseized layer, wherein, antiseized layer has the effect of keeping apart from viscose layer to prevent to pave waterproofing membrane in advance and glue the foot phenomenon and improve the efficiency of construction in the work progress. At present, the common material of antiseized protective layer has mo lai sand and reaction sand, but mo lai sand antiseized layer and the antiseized layer of reaction sand fall the sand phenomenon easily to appear in the work progress, and in long-time laying process, can make naked self-adhesive layer receive external ultraviolet irradiation, lead to the hot melt adhesive ageing, reduce the adhesion effect from adhesive layer and concrete. In addition, the pre-paved coiled material using mullite sand and reaction sand as the anti-sticking layer has poor anti-stripping performance, and when the concrete cracks, the pre-paved waterproof coiled material is easy to strip and leak water.

Disclosure of Invention

In view of this, the application provides a pre-paved waterproofing membrane, aims at solving the antiseized layer and falls sand, pre-paved waterproofing membrane's peel resistance is relatively poor and self-adhesive layer easily receives the not good problem of the bonding effect of ultraviolet influence and concrete.

On one hand, the embodiment of the application provides a pre-paved waterproof roll, which comprises an anti-sticking layer, a self-adhesive layer and a main waterproof material layer which are sequentially stacked, wherein the anti-sticking layer comprises plastic mesh cloth;

the self-adhesive layer comprises 100 parts of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, 100-200 parts of plasticizer, 100-300 parts of tackifying resin compound, 5-10 parts of antioxidant and 5-10 parts of light stabilizer.

According to an embodiment of one aspect of the present application, the plastic mesh cloth has a thickness of 0.25mm to 10mm.

According to an embodiment of one aspect of the present application, the plastic mesh cloth comprises a mesh selected from one or more of a circle, an ellipse, a triangle, a quadrangle, a pentagon and an irregular shape.

According to an embodiment of one aspect of the present application, the plastic mesh cloth has a mesh area of 0.01cm ² -25cm ² 。

According to an embodiment of one aspect of the present application, the above tackifying resin is selected from one or more of petroleum resins, rosin resins and terpene resins and derivatives thereof.

According to an embodiment of one aspect of the application, the antioxidant is selected from one or more of pentaerythritol tetrakis [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], phosphites, n-octadecyl beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 2,4-bis (dodecylthiomethyl) -6-methylphenol.

According to an embodiment of one aspect of the application, the above light stabilizer is selected from one or more of 2'- (2' -hydroxy-3 '-tert-butyl-5' -methylphenyl) -5-chlorobenzotriazole, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxy-phenol, 2- (4,6-diphenyl-1,3,5-triazine-2-yl) -5-n-hexyloxy-phenol, bis-2,2,6,6-tetramethylpiperidinol sebacate, and a polymer of succinic acid with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol.

According to an aspect of the present invention, the thickness of the self-adhesive layer is 0.25mm to 0.35mm.

On the other hand, the embodiment of the application provides a preparation method of a pre-paved waterproof roll, which comprises the following steps: modifying the styrene-isoprene-styrene synthetic rubber by using nano silicon dioxide to obtain nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber;

stirring the nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, the plasticizer, the tackifying resin compound, the antioxidant and the light stabilizer at the temperature of 150-170 ℃ in vacuum until the nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, the plasticizer, the tackifying resin compound, the antioxidant and the light stabilizer are uniformly mixed to obtain self-adhesive;

and coating the self-adhesive glue on the main waterproof material layer, then placing the plastic mesh cloth on the self-adhesive glue layer, and pressing to obtain the pre-paved waterproof roll.

According to another embodiment of the present application, the above modifying treatment of the styrene-isoprene-styrene synthetic rubber with nano-silica to obtain nano-silica modified styrene-isoprene-styrene synthetic rubber comprises:

carrying out surface modification treatment on the nano silicon dioxide to obtain vinyl modified nano silicon dioxide;

mixing vinyl-modified nano-silica, an initiator and styrene-isoprene-styrene synthetic rubber for reaction for 4-6h to obtain the nano-silica-modified styrene-isoprene-styrene synthetic rubber.

According to another embodiment of the present application, the vinyl-modified nano silica, the initiator and the styrene-isoprene-styrene synthetic rubber have a mass ratio of 1:0.2-0.4:5-20.

Compared with the prior art, the application has at least the following beneficial effects:

(1) The pre-paved waterproof coiled material provided by the application can solve the problem of sand falling, has excellent foot sticking resistance and guarantees the construction efficiency; meanwhile, the water-resistant and water-proof adhesive has good adhesion with concrete and external force stripping resistance, and can prevent water channeling.

When the plastic mesh cloth is used as an anti-sticking layer, concrete is directly poured on the self-adhesive layer through the mesh, so that the bonding effect of the pre-paved waterproof coiled material can be effectively enhanced, the external force peeling resistance of the waterproof coiled material is improved, and the water channeling phenomenon is prevented; in addition, the plastic mesh cloth is used as an anti-sticking layer to control the extension of the cracks of the matrix concrete to the self-adhesive layer, so that the crack resistance of the concrete is improved, and the water channeling phenomenon is further prevented.

(2) The application provides a pre-paved waterproofing membrane has excellent anti ultraviolet ageing resistance, can effectively prevent the coiled material that outdoor solarization caused and drop out gluey phenomenon.

(3) The preparation method of the pre-laid waterproof roll is simple and easy to implement, low in equipment requirement, capable of being well compatible with the existing process and extremely high in large-scale application potential.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a pre-laid waterproof roll.

FIG. 2 is an elevation view of a pre-roll waterproof material in one embodiment.

FIG. 3 is a top view of a pre-roll waterproof material in one embodiment.

Description of reference numerals:

10: pre-paving a waterproof coiled material; 11: a main body waterproof material layer; 12: a self-adhesive layer; 13: and (4) an anti-sticking layer.

Detailed Description

In order to make the application purpose, technical solution and beneficial technical effects of the present application clearer, the present application is further described in detail with reference to the following embodiments. It should be understood that the embodiments described in this specification are only for the purpose of explaining the present application and are not intended to limit the present application.

For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits.

In the description of the present application, it is to be noted that "more" and "below" are intended to include the present numbers, and "more" of "one or more" means two or more, unless otherwise specified.

The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.

In practical application, when the pre-laid waterproof roll is subjected to sand falling and long-term action of outdoor environments such as ultraviolet rays, the problems that the roll sticks to feet, construction efficiency is reduced, hot melt adhesive is aged, water leaks from subsequent rolls and the like are easily caused.

Based on this, the inventors have conducted a great deal of research and have aimed at providing a pre-laid waterproof roll material which has excellent sand-shedding resistance, external-force peeling resistance and aging resistance, can be well bonded to concrete, improves the crack resistance of concrete, and prevents the occurrence of water channeling.

Pre-laid waterproof roll

Fig. 1 shows a schematic structural view of a pre-laid waterproofing membrane according to an embodiment of the present application. As shown in fig. 1, the pre-laid waterproof roll 10 provided by the embodiment of the first aspect of the present application includes a release layer 13, a self-adhesive layer 12 and a main waterproof material layer 11, which are sequentially stacked, wherein the release layer 13 includes a plastic mesh cloth; the self-adhesive layer 12 comprises 100 parts of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, 100-200 parts of plasticizer, 100-300 parts of tackifying resin compound, 5-10 parts of antioxidant and 5-10 parts of light stabilizer.

According to this application embodiment's pre-paved waterproofing membrane 10 possesses excellent sand drop prevention, anti external force and peels off and the ageing resistance, and is respond well with the concrete bonding simultaneously, can prevent to scurry the emergence of water phenomenon to ensure the efficiency of construction.

According to the embodiment of this application, when antiseized layer is plastics net check cloth, at first, can solve the tradition and spread the antiseized layer of waterproofing membrane in advance and fall the problem of sand, can prevent simultaneously to glue the emergence of foot phenomenon under the high temperature condition, guarantee the efficiency of building site summer construction. Secondly, concrete can be directly poured on the self-adhesive layer through the grids, so that the bonding effect of the pre-paved waterproof roll is enhanced, and the external force peeling resistance of the waterproof roll is improved; in addition, the anti-sticking layer can control the extension of the crack of the base concrete to the self-sticking layer, thereby improving the crack resistance of the concrete and further preventing the water channeling phenomenon.

In some embodiments, the self-adhesive glue layer comprises: 100 parts of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, 100-200 parts of plasticizer, 100-300 parts of tackifying resin compound, 5-10 parts of antioxidant and 5-10 parts of light stabilizer.

According to the embodiment of the application, in order to prevent the self-adhesive layer of the pre-paved waterproof roll from being irradiated by external ultraviolet light to cause the aging of the hot melt adhesive, the self-adhesive layer of the pre-paved waterproof roll in the embodiment of the application uses the nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber. The synthetic rubber is prepared by grafting nano silicon dioxide on a carbon-carbon double bond in styrene-isoprene-styrene synthetic rubber, and the main functions of the synthetic rubber comprise the following two aspects: (1) Carbon-carbon double bonds in the styrene-isoprene-styrene synthetic rubber are easy to participate in aging crosslinking and aging cracking reaction under the irradiation of ultraviolet light, so that the ultraviolet aging resistance of the hot melt adhesive can be effectively enhanced by reducing the number of the carbon-carbon double bonds. (2) The ultraviolet reflectivity of the grafted nano silicon dioxide group within 490nm of wavelength is up to 70%, the ultraviolet can be effectively reflected, the contact between other groups easy to age in the self-adhesive glue layer and ultraviolet is reduced, the ultraviolet aging resistance of the self-adhesive glue layer is further improved, the bonding effect of the pre-paved waterproof roll and concrete is enhanced, and the water channeling phenomenon is prevented.

In some embodiments, the body water repellent material is high density polyethylene.

According to the embodiment of the application, the high-density polyethylene has good heat resistance, cold resistance and chemical stability, and also has higher rigidity, toughness and mechanical strength, and better environmental stress cracking resistance. The pre-laid waterproof material using high-density polyethylene as a main waterproof material has the above properties and is excellent in waterproofness.

In some embodiments, the plastic scrim comprises: 50-100 parts of polymer resin; 20-60 parts of a toughening agent; 10-40 parts of a plasticizer; 1-5 parts of an antioxidant; 1-5 parts of a coupling agent.

In some embodiments, the polymer resin is selected from one or more of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polystyrene resin, polymethyl methacrylate resin, polyester resin, polyoxymethylene resin, polyamide resin, polyphenylene oxide resin, and polyolefin resin.

In some embodiments, the toughening agent is selected from one or more of styrene-butadiene rubber, butyl rubber, polyisobutylene rubber, styrene-butadiene-styrene synthetic rubber, styrene-isoprene-styrene synthetic rubber, styrene-ethylene-butylene-styrene synthetic rubber, styrene-ethylene-propylene-styrene synthetic rubber, polyolefin resin, and thermoplastic vulcanizate.

In some embodiments, the plastic scrim has a thickness of 0.25mm to 10mm. For example, the thickness of the plastic mesh may be 0.25mm, 1mm, 3mm, 6mm, 8mm or 10mm. The thickness of the plastic mesh cloth can be any combination range of the above values.

According to the embodiment of the application, the plastic grid cloth in the thickness range can prevent the foot sticking phenomenon, ensure the construction efficiency, effectively improve the anti-stripping performance of the pre-paved waterproof roll, prevent the water channeling phenomenon, simultaneously control the crack of the base concrete and further extend to the self-adhesive layer, improve the crack resistance of the concrete, and the thickness of the plastic grid cloth is more than or equal to that of the self-adhesive layer. If the thickness of the plastic grid cloth is less than 0.25mm, the self-adhesive layer of the pre-paved waterproof coiled material cannot be sufficiently isolated from a constructor, so that the foot adhesion phenomenon is caused, and the construction efficiency is reduced. If the thickness of the plastic mesh cloth is higher than 10mm, the pre-paved coiled material cannot be normally coiled and stored.

In some embodiments, the plastic scrim comprises a mesh selected from one or more of a circle, an ellipse, a triangle, a quadrilateral, a pentagon, and an irregular shape. For example, the grid shape of the plastic grid cloth can be circular, triangular, quadrangular or both elliptical and quadrangular. The grid shape of the plastic grid cloth can also be any one of the shapes or a combination of the shapes.

In some embodiments, the plastic scrim has a mesh area of 0.01cm ² -25cm ² . For example, the plastic mesh cloth may have a mesh area of 0.01cm ² 、1cm ² 、7cm ² 、16cm ² Or 25cm ² . The grid area of the plastic grid cloth can be in any combination range of the above values.

According to the examples of the present application, 0.01cm ² -25cm ² The area of the grid within the range can ensure that the concrete can directly penetrate through the grid to be directly poured on the self-adhesive layer, so that the bonding effect of the pre-paved waterproof coiled material and the concrete is effectively improved, and the foot sticking phenomenon can be prevented. If the area of the plastic mesh cloth is less than 0.01cm ² And when the concrete particle size is larger, the concrete cannot directly penetrate through the grids to be in direct contact with the self-adhesive, so that the bonding effect is reduced, and even the water channeling phenomenon occurs. If the area of the plastic grid is more than 25cm ² In time, a foot sticking phenomenon occurs, resulting in a great reduction in construction efficiency.

In some embodiments, the tackifying resin is selected from one or more of petroleum resins, rosin resins, and terpene resins and derivatives thereof.

In some embodiments, the tackifying resin is selected from one or more of a C5 hydrogenated petroleum resin, a C5 non-hydrogenated petroleum resin, a C9 hot polymeric resin, a C9 cold polymeric resin, a rosin resin, and a phenolic terpene resin.

According to the embodiment of the application, the tackifying resin has good compatibility with other components in the self-adhesive glue, has moderate relative molecular mass and free monomer content, and can greatly improve the initial adhesion and the peel strength of the self-adhesive glue.

In some embodiments, the antioxidant is selected from one or more of pentaerythritol tetrakis [ β - (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], phosphites, n-octadecyl β - (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, and 2,4-bis (dodecylthiomethyl) -6-methylphenol. For example, the antioxidant can be pentaerythritol tetrakis [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], phosphite, or a mixture of phosphite and n-octadecyl beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate. The antioxidant may also be a combination of any one or more of the above.

According to the embodiment of the application, the antioxidant can prevent oxygen from permeating into the self-adhesive layer to react with other polymers to cause crosslinking or degradation, and further prolong the service life of the self-adhesive.

In some embodiments, the light stabilizer is selected from one or more of 2'- (2' -hydroxy-3 '-tert-butyl-5' -methylphenyl) -5-chlorobenzotriazole, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxy-phenol, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-n-hexane oxyphenol, bis-2,2,6,6-tetramethylpiperidinol sebacate, and a polymer of succinic acid with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol. For example, the light stabilizer may be 2'- (2' -hydroxy-3 '-tert-butyl-5' -methylphenyl) -5-chlorobenzotriazole, bis-2,2,6,6-tetramethylpiperidinol sebacate, a polymer of succinic acid with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol, or a mixture of 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxy-phenol and 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-n-hexylalkoxyphenol. The light stabilizer may also be a combination of any one or more of the above.

According to the embodiments of the present application, the light stabilizer can shield or absorb the energy of ultraviolet rays, so that the possibility of photochemical reaction is eliminated or slowed down and the photo-aging process is prevented or delayed when the high molecular weight polymer is irradiated by light.

In some embodiments, the thickness of the self-adhesive layer is 0.25mm to 0.35mm. For example, the thickness of the self-adhesive layer may be 0.25mm, 0.28mm, 0.32mm, or 0.35mm. The thickness of the self-adhesive layer may be any combination of the above values.

According to the embodiment of this application, adhesion and ultraviolet aging resistance can be compromise to the self-adhesive in above-mentioned thickness range, and then improves waterproofing membrane's water-proof effects and anti external force peeling performance, prevents to appear scurrying the water phenomenon.

Preparation method of pre-laid waterproof roll

The application also provides a preparation method of the pre-paved waterproof roll, which comprises the following steps: modifying the styrene-isoprene-styrene synthetic rubber by using nano silicon dioxide to obtain nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber;

In some embodiments, the pre-roll is laminated to form a pre-roll in front and top views as shown in fig. 2 and 3. It can be known from fig. 2 and 3 that antiseized layer 13 uses the plastics net check cloth, can make self-adhesion layer 12 expose, and then when concreting, can make concrete direct and self-adhesion fully contact, improves the bonding effect of pre-paved coiled material and concrete, and then improves waterproofing membrane's anti external force stripping performance, prevents to appear scurrying the water phenomenon.

In some embodiments, the plastic mesh fabric preparation method comprises: starting the double screw extruder, heating to 160-180 deg.c, adding polymer resin and various assistants to melt the components inside the extruder, extruding with screw to form a network, and cooling to form the network.

In some embodiments, modifying the nanosilica on the styrene-isoprene-styrene synthetic rubber to obtain nanosilica-modified styrene-isoprene-styrene synthetic rubber comprises:

The surface modification treatment is carried out on the nano silicon dioxide, and specifically, the vinyl silane coupling agent is adopted to carry out surface modification on the nano silicon dioxide. The vinyl silane coupling agent can be selected from one or more of KH570, vinyl trimethoxy silane, vinyl triethoxy silane, vinyl tributyl copper oximido silane, tri (isopropenoxy) vinyl silane and vinyl tri (beta-methoxyethoxy) silane.

According to the embodiment of the application, tetraethoxysilane, ammonia water and a methanol solution are uniformly mixed, reacted for 10 hours at the temperature of 20-30 ℃, and ground to prepare the nano silicon dioxide spheres. Mixing the nano-silica spheres with a methanol solution, adding a silane coupling agent KH570 and ammonia water, reacting for 10 hours at the temperature of 20-30 ℃, taking out a sample, drying and grinding into powder to prepare the vinyl-modified nano-silica spheres. Adding vinyl-modified nano-silica spheres into a xylene solution, sequentially adding an initiator and styrene-isoprene-styrene synthetic rubber, reacting at 70-90 ℃, washing and drying after 5-hour reaction to obtain the styrene-isoprene-styrene synthetic rubber grafted by the nano-silica spheres.

In some embodiments, the initiator is azobisisobutyronitrile.

In some embodiments, the mass ratio of the vinyl-modified nano silica to the initiator to the styrene-isoprene-styrene synthetic rubber during mixing reaction is 1:0.2-0.4:5-20.

In some embodiments, the mass ratio of the vinyl-modified nanosilica, the initiator, and the styrene-isoprene-styrene synthetic rubber when mixed is 1:0.3:10.

the preparation method of the pre-laid waterproof roll according to the embodiment of the application is simple and easy to implement, has low requirements on equipment, can be well compatible with the existing process, and has great large-scale application potential.

The pre-paved waterproof coiled material provided by the application can solve the problem of sand falling of an anti-sticking layer, has excellent foot sticking resistance and guarantees the construction efficiency; meanwhile, the adhesive has good adhesion and external force stripping resistance with concrete, and can prevent the water channeling phenomenon; in addition, the coating also has excellent ultraviolet aging resistance, and can effectively prevent the phenomenon of coil falling and glue opening caused by outdoor solarization. Therefore, the pre-paved waterproof coiled material can be used as a waterproof first barrier of the whole project and can be applied to various places such as building walls, roofs, tunnels, highways, refuse landfills and the like.

Examples

The present disclosure is more particularly described in the following examples that are intended as illustrative only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the equipment used in the examples is commercially available.

The preparation method of the self-adhesive in the following examples 1-5 and comparative examples 1-2 is as follows: after the temperature of the reaction kettle is raised to 160 ℃, 100 parts of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, 150 parts of plasticizer, 200 parts of tackifying resin compound, 5 parts of antioxidant and 5 parts of light stabilizer are sequentially added, and the mixture is stirred in vacuum until the mixture is uniformly mixed, so that the self-adhesive is obtained.

The preparation method of the self-adhesive in the comparative example 3 is as follows: and heating the reaction kettle to 160 ℃, sequentially adding 100 parts of styrene-isoprene-styrene synthetic rubber, 150 parts of plasticizer, 200 parts of tackifying resin compound, 5 parts of antioxidant and 5 parts of light stabilizer, and stirring in vacuum until the mixture is uniformly mixed to obtain the self-adhesive.

The preparation method of the plastic mesh cloth in the following examples 1 to 5 and comparative example 3 is as follows: starting a double-screw extruder, heating to 170 ℃, adding 100 parts of PE polymer resin, 40 parts of toughening agent, 30 parts of plasticizer, 4 parts of antioxidant and 4 parts of coupling agent, heating and melting all the components in the extruder, extruding the components by a screw into a special rotary machine head with inner and outer die orifices provided with a plurality of small holes to form a network, and cooling and shaping the network.

Example 1

A self-adhesive with the thickness of 0.25mm is blade-coated on a main body waterproof material layer by using a hot melt adhesive blade coating machine, wherein the mass ratio of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive is 1. Then the thickness is 0.5mm, the area of the grid is 0.2cm ² And (3) placing the plastic mesh cloth above the self-adhesive layer, and pressing to obtain the pre-paved waterproof roll.

Example 2

A pre-paved waterproof coiled material uses a hot melt adhesive blade coating machine to blade a self-adhesive with the coating thickness of 0.25mm on a main waterproof material layer, wherein the mass ratio of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive is 1. Then the thickness is 0.5mm, the grid area is 0.5cm ² And (3) arranging the plastic mesh cloth above the self-adhesive layer, and pressing to obtain the pre-paved waterproof roll.

Example 3

A pre-paved waterproof coiled material uses a hot melt adhesive blade coating machine to blade a self-adhesive with the coating thickness of 0.3mm on a main waterproof material layer, wherein the mass ratio of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive is 1. Then the thickness is 0.5mm, the area of the grid is 0.5cm ² And (3) placing the plastic mesh cloth above the self-adhesive layer, and pressing to obtain the pre-paved waterproof roll.

Example 4

A self-adhesive glue with the thickness of 0.3mm is scraped on a main body waterproof material layer by using a hot melt adhesive scraping machine, wherein the mass ratio of nano-silica modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive glue is 1. Then the thickness is 0.5mm, the grid area is 0.5cm ² And (3) placing the plastic mesh cloth above the self-adhesive layer, and pressing to obtain the pre-paved waterproof roll.

Example 5

A pre-paved waterproof coiled material is characterized in that a hot melt adhesive blade coating machine is used for blade coating a self-adhesive with the thickness of 0.3mm on a main waterproof material layer, wherein the mass ratio of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive is 1:5. Then the thickness is 0.5mm, the area of the grid is 0.5cm ² And (3) placing the plastic mesh cloth above the self-adhesive layer, and pressing to obtain the pre-paved waterproof roll.

Comparative example

Comparative example 1

A self-adhesive with the thickness of 0.25mm is blade-coated on a main body waterproof material layer by using a hot melt adhesive blade coating machine, wherein the mass ratio of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive is 1. Then, the mullite sand with 30 meshes to 60 meshes is placed above the self-adhesive layer, the thickness is 0.5mm, and the pre-paved waterproof roll is obtained by pressing.

Comparative example 2

A self-adhesive with the thickness of 0.25mm is blade-coated on a main body waterproof material layer by using a hot melt adhesive blade coating machine, wherein the mass ratio of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber to styrene-isoprene-styrene in the self-adhesive is 1. And then placing the 30-60 mesh reaction sand above the self-adhesive glue layer with the thickness of 0.5mm, and pressing to obtain the pre-paved waterproof roll.

Comparative example 3

A self-adhesive coating with the thickness of 0.3mm is blade-coated on a main body waterproof material layer by using a hot melt adhesive blade coating machine, wherein the self-adhesive comprises styrene-isoprene-styrene synthetic rubber which is not grafted with nano silicon dioxide. Then the thickness is 0.5mm, the grid area is 0.5cm ² And (3) placing the plastic mesh cloth above the self-adhesive layer, and pressing to obtain the pre-paved waterproof roll.

Comparative example 1 is different from example 1 in that comparative example 1 replaces the plastic mesh cloth of example 1 with 30-60 mesh mullite sand; the difference between the comparative example 2 and the example 1 is that the comparative example 2 replaces the plastic mesh cloth in the example 1 with the reaction sand of 30-60 meshes; comparative example 3 is different from example 4 in that the self-adhesive layer of comparative example 3 replaces the nano-silica modified styrene-isoprene-styrene synthetic rubber of example 4 with styrene-isoprene-styrene synthetic rubber.

Test section

The pre-laid waterproofing membranes of examples 1 to 5 and comparative examples 1 to 3 were subjected to the relevant performance tests with reference to the standard GB/T23457-2017, and the test results of examples 1 to 5 and comparative examples 1 to 3 are shown in table 1 below.

As can be seen from the following test results, the peel strength between the pre-laid waterproofing membrane and the post-cast concrete of examples 1 to 5 was high after no treatment, 28 days after soaking in water, and after ultraviolet aging treatment, and the peel strength of the pre-laid waterproofing membrane was increased with the increase of the area of the plastic mesh, and no footing was generated even at a high temperature of 60 ℃. In addition, when the proportion of the grafted nano silica contained in the self-adhesive is too low, the ultraviolet resistance enhancing effect is low (example 3) compared with example 4; when the proportion of the grafted nano-silica is too high, the peel strength of the pre-paved waterproofing membrane is obviously reduced (example 5). From the results of comparative examples 1 and 2, it is understood that the anti-sticking layer is a pre-laid waterproof roll made of mullite sand and reaction sand, and has low anti-peeling ability and a foot sticking phenomenon. As shown in comparative example 3, when the self-adhesive layer comprises styrene-isoprene-styrene synthetic rubber, the UV aging resistant glass strength of the self-adhesive layer is only 1.2N/mm, which is much lower than that of the pre-laid waterproof roll material in example 4, and thus the self-adhesive layer comprising nano-silica modified styrene-isoprene-styrene synthetic rubber has good UV aging resistance.

TABLE 1 test results of examples 1 to 5 and comparative examples 1 to 3

Note: the peel strength in the table is the peel strength of the coil and post-cast concrete.

In conclusion, when the anti-sticking layer of the pre-paved waterproof roll is the plastic mesh cloth and the self-sticking layer is the nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber system hot melt adhesive, the problem of sand falling can be solved, and the adhesive has excellent foot sticking resistance and ensures the construction efficiency; meanwhile, the adhesive has good adhesion with concrete and external force stripping resistance, and can prevent the water channeling phenomenon. In addition, the pre-paved waterproof coiled material has excellent ultraviolet aging resistance, and can effectively prevent the phenomenon of shedding of the coiled material caused by outdoor solarization.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A pre-laid waterproof roll comprises an anti-sticking layer, a self-adhesive layer and a main waterproof material layer which are sequentially stacked, and is characterized in that the anti-sticking layer comprises plastic mesh cloth;

the self-adhesive layer comprises 100 parts of nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber, 100-200 parts of plasticizer, 100-300 parts of tackifying resin compound, 5-10 parts of antioxidant and 5-10 parts of light stabilizer;

wherein the nano-silica modified styrene-isoprene-styrene synthetic rubber is obtained by the following method:

2. A pre-laid waterproofing membrane according to claim 1, wherein the thickness of the plastic mesh cloth is 0.25mm to 10mm.

3. A roll of pre-laid waterproofing according to claim 1, wherein said plastic mesh cloth comprises meshes selected from one or more of circular, oval, triangular, quadrilateral, pentagonal and irregular shapes.

4. A pre-laid waterproofing membrane according to claim 1, wherein the plastic mesh cloth has a mesh area of 0.01cm ² -25cm ² 。

5. A pre-applied waterproofing membrane according to claim 1, wherein the tackifying resin compound is selected from one or more of petroleum resins, rosin resins and terpene resins and derivatives thereof.

6. The roll of pre-applied waterproofing according to claim 1 wherein the antioxidant is selected from one or more of pentaerythritol tetrakis [ β - (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], phosphite, n-octadecyl β - (3,5-di-tert-butyl-4-hydroxyphenyl) propionate and 2,4-bis (dodecylthiomethyl) -6-methylphenol; and/or the presence of a gas in the gas,

the light stabilizer is selected from one or more of 2'- (2' -hydroxy-3 '-tert-butyl-5' -methylphenyl) -5-chlorobenzotriazole, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxy-phenol, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-n-hexyloxyphenol, bis-2,2,6,6-tetramethylpiperidinol sebacate and a polymer of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol.

7. The pre-paved waterproof roll material as claimed in claim 1, wherein the vinyl-modified nano silica, the initiator and the styrene-isoprene-styrene synthetic rubber are mixed at a mass ratio of 1:0.2-0.4:5-20.

8. A pre-spread waterproofing membrane according to claim 1, wherein said self-adhesive layer has a thickness of 0.25mm to 0.35mm.

9. A method for preparing a pre-laid waterproofing membrane according to any of claims 1 to 8, comprising:

modifying the styrene-isoprene-styrene synthetic rubber by using nano silicon dioxide to obtain nano silicon dioxide modified styrene-isoprene-styrene synthetic rubber;