CN113773762B

CN113773762B - Self-adhesive waterproof roll and preparation method thereof

Info

Publication number: CN113773762B
Application number: CN202110937241.9A
Authority: CN
Inventors: 于亮亮; 龚兴宇; 杨小育; 李雄
Original assignee: Keshun Waterproof Technology Co Ltd
Current assignee: Keshun Waterproof Technology Co Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-05-27
Anticipated expiration: 2041-08-16
Also published as: CN113773762A

Abstract

The application discloses self-adhesion waterproof roll and a preparation method thereof, and the method comprises the following steps: providing an asphalt-based coating material; the step for selecting the isolating membrane comprises the steps of measuring the thermal shrinkage rate of the isolating membrane to select the PE isolating membrane with the thermal shrinkage rate of less than or equal to 3.0%, and testing that the heat resistance of the PE isolating membrane meets a first condition, wherein the first condition is as follows: covering the asphalt at the temperature of 165-185 ℃ on a PE isolating membrane, wherein the PE isolating membrane has no wrinkle phenomenon or has the heat shrinkage rate of less than or equal to 2%; a step for producing a self-adhesive waterproof roll, which comprises covering both surfaces opposing in the thickness direction of the asphalt-based coating material with a PE separator and a top film to obtain a self-adhesive waterproof roll. The method can obtain the self-adhesive waterproof roll with excellent wrinkle resistance.

Description

Self-adhesive waterproof roll and preparation method thereof

Technical Field

The application belongs to the technical field of waterproof building materials, and particularly relates to a self-adhesive waterproof roll and a preparation method thereof.

Background

The self-adhesive asphalt waterproof coiled material has the characteristics of strong adhesive force, cold construction, convenient construction and the like, and becomes the first choice for the construction of the waterproof coiled material in recent years.

However, the existing self-adhesive waterproof roll is difficult to avoid undergoing photo-thermal aging behavior during transportation or storage, and when the roll is subjected to later-stage unsealing construction, the surface always has stripes of some folds, and the roll surface is uneven when observed from the side surface, so that the effective bonding area of the roll and a base surface is insufficient, and the hidden trouble of water channeling in building construction is increased.

At present, the surface wrinkle phenomenon is mainly reduced by the improvement of the production process. However, the method is difficult to implement, has low universality, does not improve the wrinkle phenomenon visually, can increase the production cost, has certain requirements on production equipment, and solves the problem that the wrinkle phenomenon of the self-adhesive waterproof roll after aging is common in the industry at present.

Disclosure of Invention

The application provides in a first aspect a method for preparing a self-adhesive waterproofing membrane, comprising:

providing an asphalt-based coating material;

the step for selecting the isolating membrane comprises the steps of measuring the thermal shrinkage rate of the isolating membrane to select the PE isolating membrane with the thermal shrinkage rate of less than or equal to 3.0%, and testing that the heat resistance of the PE isolating membrane meets a first condition, wherein the first condition is as follows: covering the PE isolating membrane with the asphalt at the temperature of 165-185 ℃, wherein the PE isolating membrane has no wrinkle phenomenon or the shrinkage rate is less than or equal to 2%;

a step for producing a self-adhesive waterproof roll, which comprises covering both surfaces opposing in the thickness direction of the asphalt-based coating material with a PE separator and a top film to obtain a self-adhesive waterproof roll.

According to the method of the first aspect of the application, the self-adhesive waterproof roll with excellent anti-wrinkle performance is prepared by selecting the PE isolating membrane with the thermal shrinkage rate within a proper range and meeting the first condition. The coil obtained by the method is less likely to have wrinkles even after photo-thermal aging. According to the method provided by the first aspect of the application, the yield of the coiled material with the thermal shrinkage rate less than or equal to 2% is more than 99.5%.

In an alternative embodiment of the first aspect of the present application, the step for selecting the isolation film further includes: selecting a PE isolation film with a release force of 80-100 mN/25 mm.

In an alternative embodiment of the first aspect of the present application, the step for selecting the isolation film further includes: selecting a PE isolating film with the thickness of 0.025-0.045 mm.

In an alternative embodiment of the first aspect of the present application, the step for selecting the isolation film further includes: selecting a PE isolation film with a residual adhesion of 10-30%.

In an alternative embodiment of the first aspect of the present application, the mask film is a film of polymeric material or a modified polymeric material.

In an alternative embodiment of the first aspect of the present application, providing an asphalt-based coating includes:

uniformly mixing the raw materials under stirring at a temperature sufficient to melt the raw materials of the asphalt-based capstock to obtain the asphalt-based capstock;

the raw materials of the asphalt-based coating material preferably comprise the following components in parts by weight:

100 parts of matrix asphalt, 20-40 parts of oil, 11-30 parts of a high-molecular modifier, 3-9 parts of a coupling agent, 2-10 parts of an anti-aging agent, 20-45 parts of rubber powder and 30-65 parts of a filler.

The application second aspect provides a self-adhesion waterproofing membrane, including barrier film, pitch base scribble capstock and facial mask, wherein, the barrier film is the PE barrier film that the thermal shrinkage is less than or equal to 3.0%. The heat resistance of the PE isolating film meets the following first condition:

covering the asphalt at the temperature of 165-185 ℃ on the PE isolating membrane, wherein the PE isolating membrane has no wrinkle phenomenon or has the thermal shrinkage rate of less than or equal to 2%.

The self-adhesive waterproofing membrane provided by the second aspect of the present application comprises a specific PE release film, thereby having excellent wrinkle resistance. The self-adhesive waterproof roll provided by the second aspect of the application is not easy to wrinkle even after photo-thermal aging, and can maintain excellent low-temperature flexibility and peeling strength.

In an optional embodiment of the second aspect of the present application, the release force of the PE release film is 80-100 mN/25 mm.

In an alternative embodiment of the second aspect of the present application, the PE barrier film has a thickness of 0.025 to 0.045 mm.

In an alternative embodiment of the second aspect of the present application, the PE release film has a residual adhesion of 10 to 30%.

In an alternative embodiment of the second aspect of the present application, the mask film is a polymer material film or a modified polymer material film.

In an alternative embodiment of the second aspect of the present application, the asphalt-based paint topping comprises the following raw material components in parts by weight:

In an optional embodiment of the second aspect of the present application, the thickness of the self-adhesive waterproof roll is 1.5-2.5 mm.

In an alternative embodiment of the second aspect of the present application, the thermal shrinkage of the self-adhesive waterproofing roll is less than or equal to 2%.

The self-adhesive waterproof roll material provided by the second aspect of the application has excellent anti-wrinkle performance, and wrinkles are not easy to generate even after photo-thermal aging.

Detailed Description

In order to make the purpose, technical solution and advantageous technical effects of the present invention clearer, the present invention 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 a few 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 herein, when a composition is described as containing, comprising, or including specific components, or when a process is described as containing, comprising, or including specific process steps, it is contemplated that the composition herein also consists essentially of, or consists of, the recited components, and that the process herein also consists essentially of, or consists of, the recited process steps.

The use of the terms "comprising," "including," "containing," and "having" are generally to be construed as open-ended and non-limiting unless otherwise expressly specified.

In the description herein, it is to be noted that "more" and "below" are inclusive of the present number and the meaning of "more" of "one or more" is 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.

Present self-adhesion waterproofing membrane is inevitable to experience the ageing action of light and heat in the transportation or during depositing, when the construction is torn open to the back stage, the surface always has the stripe of some folds, and the coiled material surface edgewise observation is unevenness, and this will lead to coiled material and basic plane effective bonding area not enough, increases the hidden danger that the water was scurried in the construction.

At present, the surface wrinkle phenomenon is mainly reduced by the improvement of the production process. However, the method is difficult to implement, low in universality, free of visual improvement on the wrinkle phenomenon, capable of increasing the production cost, capable of meeting certain requirements on production equipment, and capable of solving the wrinkle phenomenon of the aged self-adhesive waterproof roll material.

The inventor finds that the PET film applied to the self-adhesive waterproof roll material has good wrinkle resistance, but the PET film is easy to be pulverized after aging, so that the film is difficult to tear during construction. Compared to PET, PE is more stable in properties. However, it is generally considered in the prior art that the effect of the PE film in improving the wrinkle resistance of the self-adhesive waterproof roll is far less than that of the PET film.

Without intending to be bound by any theory or explanation, the inventors have found through a series of experimental studies that a PE separator satisfying specific requirements can achieve the same or even better anti-wrinkle effect as PET. Such PE barrier films can be characterized by specific parameter indices. In view of this, the present application is proposed.

step S10, providing an asphalt-based coating material.

The method of the present application further includes a step S20 for selecting the barrier film, including measuring the thermal shrinkage rate of the barrier film to select the PE barrier film having a thermal shrinkage rate of not more than 3.0%, and checking that the heat resistance of the PE barrier film meets a first condition, the first condition being: covering the asphalt at the temperature of 165-185 ℃ on the PE isolating membrane, wherein the PE isolating membrane has no wrinkle phenomenon or has the thermal shrinkage rate of less than or equal to 2%.

In step S20, the thermal shrinkage of the isolation film is measured to select the PE isolation film with the thermal shrinkage less than or equal to 3.0% according to the test standard specified in GB/T34848-2017.

In the first condition, the PE isolation film is covered with the asphalt at the temperature of 165-185 ℃, and the PE isolation film has no wrinkle, and the method specifically comprises the following steps: covering the asphalt at the temperature of 165-185 ℃ on the PE isolating membrane, and directly observing the PE isolating membrane without obvious wrinkles.

In the first condition, asphalt at 165-185 ℃ is covered on the PE insulator, and the thermal shrinkage rate is less than or equal to 2 percent, specifically: covering the PE isolation with the asphalt at the temperature of 165-185 ℃, standing at room temperature for 24 hours, and naturally cooling to obtain a sample;

the heat shrinkage of the sample was measured according to test method B (caliper method) specified in GB/T328.12-2007, and the heat shrinkage of the sample was 2% or less.

Different catalytic processes, different production processes and different second monomers make the molecular weight distribution, the regularity, the branching degree, the crystallinity and the like of the PE material have great difference. For example, PE materials may be classified into High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE) and Linear Low Density Polyethylene (LLDPE) according to polymerization methods, molecular weights and chain structures, and may be further classified into chlorinated polyethylene, chlorosulfonated polyethylene, cross-linked polyethylene, blend-modified polyethylene, etc. according to various modification methods. Different kinds of PE materials may have large differences in physical properties. In addition, in the preparation process of the PE isolating film, different film-making processes may cause different orientation degrees, crystallinity degrees and the like of polymer molecular chains in the PE isolating film, and even if the isolating film is prepared by adopting the same type of PE materials, the obtained products may be different greatly. The above-mentioned factors cause a large difference in the thermal shrinkage of the PE separator.

Without intending to be bound by any theory or explanation, the inventors surprisingly found that the thermal shrinkage of the PE release film is within a suitable range, and the properties of the film itself can be maintained when the film is coated, thereby improving the wrinkle resistance of the self-adhesive waterproofing roll. The inventor also found that the PE release film meeting the first condition can provide the self-adhesive waterproof roll with excellent anti-wrinkling performance.

In some embodiments, the PE separator may be first determined to meet a first condition and then tested for heat shrinkage if it meets the first condition. Therefore, the first condition can be used as the preliminary screening condition, and the selection efficiency is greatly improved. In a specific example, the first determining whether the PE isolation film meets the first condition may be: covering the asphalt at the temperature of 165-185 ℃ on the PE isolating film, and observing whether the PE isolating film generates obvious wrinkles. Like this, can judge whether PE barrier film accords with first condition through direct observation to carry out preliminary screening to PE barrier film, carry out the test of heat shrinkage rate again under the condition that PE barrier film accords with first condition, saved unnecessary cost of labor and time cost.

The method of the present application further includes a step S30 for preparing a self-adhesive waterproof roll, which includes covering the PE separator and the top film on the two opposite surfaces in the thickness direction of the asphalt-based coating material to obtain a self-adhesive waterproof roll.

In step S30, the mask film may be a conventional mask film such as a polymer material film, a modified polymer material film, an aluminum-plated film, etc., and is not particularly limited herein.

According to the method of the first aspect of the application, the self-adhesive waterproof roll with excellent anti-wrinkle performance is prepared by selecting the PE isolating membrane with the thermal shrinkage rate within a proper range and meeting the first condition. The coil obtained by the method is not easy to generate wrinkles even after photo-thermal aging, and can keep excellent low-temperature flexibility and peeling strength. According to the method provided by the first aspect of the application, the yield of the coiled material with the thermal shrinkage rate less than or equal to 2% is more than 99.5%.

In some embodiments, the step for selecting the isolation film may further include: selecting a PE isolation film with a release force of 80-100 mN/25 mm.

The release force is determined by the test standard specified in GB/T25256-.

The inventors have found that too little release force of the release film results in insufficient adhesion of the release film to the capstock. This can result in the coating not being effectively isolated from the environment during transportation and storage, accelerating the aging behavior of the coating itself, and thus affecting the adhesion of the web to the substrate. The release force of the isolating film is too large, so that the film tearing difficulty during construction can be caused, and the construction difficulty is increased. According to the method, the PE isolating membrane with the release force within a proper range is selected, and the bonding performance and the construction cost of the self-adhesive waterproof roll are considered.

In some embodiments, the step for selecting the isolation film may further include: selecting a PE isolating film with the thickness of 0.025-0.045 mm.

The inventors have found that the thickness of the PE release film is also an important factor affecting the self-adhesive waterproofing web. On the one hand, the thickness of the PE barrier film can affect its own uv aging resistance and the uv aging resistance of the capstock layer. On the other hand, the thickness of the PE barrier film also has some influence on its own release force. The PE isolating film with the thickness within a proper range is selected, so that the prepared self-adhesive waterproof roll has excellent adhesive property and ultraviolet aging resistance.

The PE isolation film generally includes a silicon-coated layer, and the silicone oil of the silicon-coated layer is selected from silicone oils commonly used in the art, such as methyl silicone oil, ethyl silicone oil, hydrogen-containing silicone oil, etc., which are not limited in this application. The silicon-coated layer may be obtained by photo-curing or thermal reaction.

During transportation and storage, if the bonding force between the silicone oil and the PE isolating membrane is not strong, the silicone oil can be transferred to the surface of the coating material. The oil film formed by the silicone oil on the surface of the coating material can influence the adhesive force and the peeling strength of the coiled material and the building base surface. According to the PE isolating film of the silicon coating layer obtained through photocuring or thermal reaction, silicone oil coated on the contact surface of the isolating film and the coating material is not easy to transfer to the coating material, so that the negative effects on the adhesive property and the peeling strength of the coiled material are greatly reduced.

In some embodiments, the step for selecting the isolation film may further include: selecting a PE isolation film with a residual adhesive force of 10-30%.

The residual adhesion is determined by the test standard specified in GB/T25256-2010.

The residual adhesion may reflect the ease with which the silicone oil of the silicon-coated layer is transferred from the release film. The residual adhesive force is too high, which causes the problem of difficult film tearing during construction. If the residual adhesion is too low, it means that silicone oil is easily transferred to the surface of the precoat, resulting in a decrease in the adhesion of the self-adhesive waterproofing membrane to the building base. The inventor selects the PE isolating membrane with the residual adhesive force within the proper range, so that the construction difficulty can be reduced, and the adhesive property of the self-adhesive waterproof roll can be ensured.

It is easily understood that, in some embodiments, the step for selecting the isolation film includes measuring the thermal shrinkage rate of the isolation film to select the PE isolation film with the thermal shrinkage rate of 3.0% or less, and checking that the heat resistance of the PE isolation film meets the first condition, and the step for selecting the isolation film may further include selecting at least one of the PE isolation film with a release force of 80 to 100mN/25mm, the PE isolation film with a thickness of 0.025 to 0.045mm, and the PE isolation film with a residual adhesion of 10 to 30%.

In some embodiments, the mask film may be a film of a polymer material or a film of a modified polymer material, for example, a PE cross film, a PET composite film, a PET aluminum alloy film, or the like.

The high polymer material film or the modified high polymer material film has stable chemical property, acid and alkali resistance and good hydrophobicity, and can effectively protect the coating material layer.

In some embodiments, the mask is preferably a PE cross-over film. Different from a common single-layer film or multi-layer film structure, the PE crossed film has heat stability, dimensional stability, two-way tear resistance, high strength and high elongation which are not possessed by a common film, and can further improve the thermal aging resistance and the peeling strength of the coiled material when being applied to the self-adhesive waterproof coiled material.

In some embodiments, providing an asphalt-based paint can include:

the raw materials are mixed uniformly with stirring at a temperature sufficient to melt the raw materials of the asphalt-based capstock to obtain the asphalt-based capstock.

The asphalt-based coating material may be an asphalt-based coating material commonly used in the prior art, and is not limited herein.

The raw material of the asphalt-based coating material may preferably include the following components in parts by weight:

In some embodiments, the base asphalt may preferably be a # 70 asphalt; the oil portion can be preferably a mixture of aromatic oil and 61# base oil, and is further preferably a mixture of aromatic oil and 61# base oil in a mass ratio of 1: 1; the coupling agent may preferably be tributyl titanate; the anti-aging agent may preferably be an antioxidant 1010; the polymer modifier can be preferably a mixture of Styrene Butadiene Rubber (SBR), C5 hydrogenated resin, styrene-butadiene-styrene block copolymer (SBS) and styrene-isoprene-styrene triblock copolymer (SIS), and more preferably a mixture of SBR, C5 hydrogenated resin, SBS, SIS, 3:2:2:3 in mass ratio; the rubber powder can be preferably vulcanized tire rubber powder with 50-70 meshes, and more preferably vulcanized tire rubber powder with 60 meshes and 70% of rubber content; the filler can be talc powder with 600-800 meshes preferably.

The asphalt-based coating material taking the components as raw materials has proper binding force with the PE isolating membrane and the facial mask selected by the application, and the self anti-aging performance is excellent. This application is through providing above-mentioned pitch base coating material, can obtain the self-adhered waterproofing membrane who has excellent anti fold performance and ageing resistance.

The application second aspect provides a self-adhesion waterproofing membrane, including barrier film, pitch base scribble capstock and facial mask, wherein, the barrier film is the PE barrier film that the thermal shrinkage is being less than or equal to 3.0%. The heat resistance of the PE isolating film meets the following first condition:

The thermal shrinkage of the separator was determined by the test standard specified in GB/T34848-2017.

In the first condition, the PE isolation film is covered with the asphalt at the temperature of 165-185 ℃, and the PE isolation film has no wrinkle, and the first condition is as follows: covering the asphalt at the temperature of 165-185 ℃ on the PE isolation film, and directly observing the PE isolation film without generating obvious wrinkles.

In the first condition, asphalt at 165-185 ℃ is covered on the PE insulator, and the thermal shrinkage rate is less than or equal to 2 percent, specifically: covering the asphalt at the temperature of 165-185 ℃ on a PE isolator, standing at room temperature for 24 hours, and naturally cooling to obtain a sample;

In some embodiments, the release force of the PE isolation film can be 80-100 mN/25 mm.

The release force is determined by the test standard specified in GB/T25256-.

In some embodiments, the PE barrier film may have a thickness of 0.025 to 0.045 mm.

In some embodiments, the residual adhesion of the PE release film may be 10-30%.

In some embodiments, the mask film may be a polymer material film or a modified polymer material film, and may be, for example, a PE cross film, a PET composite film, a PET aluminum alloy film, or the like. In particular, the mask may preferably be a PE cross-membrane.

In some embodiments, the asphalt-based capstock can comprise the following raw material components in parts by weight:

In some embodiments, the thickness of the self-adhesive waterproof roll can be 1.5-2.5 mm.

The thickness of the self-adhesive waterproof roll is in a proper range, so that the adhesive property and the wrinkle resistance of the roll can be further improved.

In some embodiments, the self-adhesive waterproofing membrane may have a thermal shrinkage of 2% or less.

The heat shrinkage of the self-adhesive waterproof roll is determined by test method B (caliper method) in the test standard specified in GB/T328.12-2007.

It will be readily appreciated that the self-adhesive waterproofing roll provided in any of the embodiments of the second aspect of the present application may be obtained by the method provided in the first aspect of the present application.

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.

Examples 1 to 15

Adding 100 parts of No. 70 asphalt and 20 parts of oil in parts by weight into a reaction kettle, wherein the oil part is a mixture of aromatic oil and No. 61 base oil in a mass ratio of 1:1, and heating the reaction kettle to 140 ℃; adjusting the rotation speed to 30r/min, and then adding 25 parts of a polymer modifier and 5 parts of an antioxidant 1010, wherein the polymer modifier is obtained by mixing SBR, C5 hydrogenated resin, SBS and SIS in a mass ratio of 3:2:2: 3; keeping the rotating speed unchanged, continuously heating to 165 ℃, and then adding 40 parts of vulcanized tire rubber powder of 50-70 meshes; stopping heating, continuously stirring and adding 50 parts of 600-800 meshes of talcum powder; reducing the rotating speed, and then slowly adding 5 parts of tributyl titanate; discharging, forming and laminating, and finally controlling the thickness of the coiled material to be about 2.0 mm.

The coating materials used in examples 1-15 were the same, the mask films used were all PE crossed films, the barrier films used were different PE barrier films, and the parameters of the PE barrier films are shown in table 1.

Comparative examples 1 to 7

The preparation methods of the coating materials and the coiled materials used in comparative examples 1 to 7 are the same as those of examples 1 to 15, the used surface films are all PE crossed films, and the types and parameters of the used isolation films are shown in Table 1.

Test section

(1) Peel Strength test

The technical standard is as follows: GB/T328.20-2007

The instrument equipment comprises: microcomputer control electronic universal tester (ETM 530B 1000N)

Peel strength test of coil to coil

10 rectangular test pieces were cut out from each test piece, and the test pieces were (50. + -.1) mm wide and perpendicular to the joint and (150. + -.1) mm long, and the completely overlapped portions thereof were subjected to the test.

The lower surface of one test piece is bonded with the upper surface of the other test piece, the bonding surface is 50mm multiplied by 75mm, the lower surface of one test piece is repeatedly rolled for 3 times by a press roll with the mass of 2kg and the width of 50-60 mm, and the lower surface of the other test piece is placed for 24 hours after bonding.

The test piece is firmly placed into the clamp of the tensile testing machine, so that the longitudinal axis of the test piece is superposed with the axes of the tensile testing machine and the clamp. The whole distance between the clamps is (100 +/-15) mm, and the clamps do not bear preload. The test temperature is 21-25 ℃, and the stretching speed is 90-110 mm/min. The resulting tensile force should be recorded continuously until the test piece separates, expressed as N, and the maximum force is recorded as the peel strength, expressed in N/mm.

Peeling strength test of coiled material and aluminum plate

5 rectangular test pieces were cut from each test piece, and had a width (50. + -.1) mm and a length (250. + -.1) mm perpendicular to the joint. And adhering the test piece to the surface of a smooth aluminum plate cleaned by a solvent, repeatedly rolling the test piece for 3 times by using a press roll with the mass of 2kg and the width of 50-60 mm, and standing for 24 hours after adhesion, wherein the adhering surface is 50mm multiplied by 75 mm.

One end of the plate was clamped into a fixture and the coil at the same end was bent 180 degrees and clamped into another fixture for testing. The test temperature is (23 +/-2) DEG C, the peel strength is calculated by using the maximum force, the unit N/mm is obtained, the arithmetic mean value of 5 test pieces is taken as an experimental result, and the test is respectively carried out on the two surfaces of the double-sided self-adhesive product.

(2) Low temperature flexibility test

The instrument equipment comprises: low temperature flexibility tester (XY-DWR-3 type)

The test was carried out using the method specified in GB/T328.14-2007.

(3) Heat shrinkage test

The instrument equipment comprises: air-blast drying cabinet (VYJG-9420)

The test was carried out using test method B (Caliper method) specified in GB/T328.12-2007.

The test results of examples 1 to 15 and comparative examples 1 to 7 are shown in Table 2.

Table 1: parameters of the separators of examples 1 to 15 and comparative examples 1 to 7

Table 2: test results of examples 1 to 15 and comparative examples 1 to 7

In the above test process, it can be seen through direct observation that the self-adhesive waterproof rolls of examples 1 to 15 and comparative examples 1 to 7 all generate wrinkle increase after aging, but the wrinkle increase of the self-adhesive waterproof rolls of examples 1 to 15 and comparative examples 6 to 7 is significantly smaller than that of comparative examples 1 to 5.

Among them, the self-adhesive waterproof rolls of comparative examples 6 and 7, since the used separator was a PET separator, the separator was pulverized due to photo-thermal aging, and the difficulty of tearing the film after aging was significantly increased.

In addition, the self-adhesive waterproofing membrane of examples 7 and 10 has a phenomenon of difficult membrane tearing during the test process because the PE isolating membrane used has a large residual adhesion force or release force. The self-adhesive waterproofing sheets of examples 8 and 11 had lower peel strength from the sheet and the aluminum sheet before and after aging than the other examples because the PE release film used had a smaller residual adhesive force or release force. The self-adhesive waterproofing sheet of example 15 having the PE separator with a larger thickness and showing no significant change in properties before and after aging, whereas the self-adhesive waterproofing sheets of examples 13 to 14 having the PE separator with a smaller thickness had a greater peel strength before aging but showed a more significant change in properties after aging than in example 15. This shows that the residual adhesive force, release force and thickness of the PE release film in the self-adhesive waterproof roll are within the ranges specified in the present application, which can make the self-adhesive waterproof roll have more excellent workability and aging resistance.

As can be seen from the comparative analysis of examples 1 to 15 and comparative examples 1 to 5, according to the method of the present application, the selected barrier film has a suitable thermal shrinkage rate and meets the first condition, and a self-adhesive waterproof roll which is less likely to wrinkle after photo-thermal aging and can maintain excellent low-temperature flexibility and peel strength can be obtained.

The application provides a coiled material includes specific PE barrier film, can reach the same anti fold effect with the self-adhered waterproofing membrane who uses the PET membrane preparation, and difficult pulverization after ageing, the construction degree of difficulty is less than the self-adhered waterproofing membrane who uses the PET membrane preparation greatly.

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 method for preparing a self-adhesive waterproofing roll comprising:

providing an asphalt-based coating material;

the step for selecting the isolating membrane comprises the steps of measuring the thermal shrinkage rate of the isolating membrane to select the PE isolating membrane with the thermal shrinkage rate of less than or equal to 3.0%, and testing that the heat resistance of the PE isolating membrane meets a first condition, wherein the first condition is as follows: covering the PE isolating membrane with the asphalt at the temperature of 165-185 ℃, wherein the PE isolating membrane has no wrinkle phenomenon or has the heat shrinkage rate of less than or equal to 2%;

a step for producing a self-adhesive waterproof roll, which comprises covering the two opposite surfaces in the thickness direction of the asphalt-based coating material with the PE release film and a face film to obtain the self-adhesive waterproof roll,

wherein, the measuring the thermal shrinkage rate of the isolating membrane to select the PE isolating membrane with the thermal shrinkage rate less than or equal to 3.0 percent comprises the following steps: measuring the thermal shrinkage rate of the isolating film according to the test standard specified in GB/T34848-2017 to select the PE isolating film with the thermal shrinkage rate less than or equal to 3.0%;

in the first condition, asphalt at 165-185 ℃ is covered on the PE isolating film, the thermal shrinkage rate of the PE isolating film is less than or equal to 2%, and the method specifically comprises the following steps: covering the PE isolating membrane with the asphalt at the temperature of 165-185 ℃, and standing at room temperature for 24 hours to obtain a sample; and testing the thermal shrinkage rate of the sample according to the test method B specified in GB/T328.12-2007 to obtain the thermal shrinkage rate of the sample being less than or equal to 2%.

2. The method of claim 1, wherein the step for extracting the isolation film further comprises: selecting the PE isolating film with the release force of 80-100 mN/25 mm; and/or

Selecting the PE isolating film with the thickness of 0.025-0.045 mm; and/or

Selecting the PE isolating film with 10-30% of residual adhesion.

3. The method of claim 1 or 2, wherein the mask is a film of polymeric material or a modified polymeric material.

4. The method of claim 1 or 2, wherein the providing an asphalt-based coating material comprises:

mixing said raw materials under agitation to homogeneity at a temperature sufficient to melt said raw materials of said asphalt-based coating to obtain said asphalt-based coating;

5. The self-adhesive waterproof coiled material comprises an isolating membrane, an asphalt-based coating material and a facial mask, wherein the isolating membrane is a PE isolating membrane, the thermal shrinkage rate of the PE isolating membrane is less than or equal to 3.0%, the heat resistance of the PE isolating membrane meets a first condition, and the first condition is as follows: covering the PE isolating membrane with the asphalt at the temperature of 165-185 ℃, wherein the PE isolating membrane has no wrinkle phenomenon or the thermal shrinkage rate is less than or equal to 2%,

wherein the thermal shrinkage rate of the PE isolating film is determined by a test standard specified in GB/T34848-2017;

6. The self-adhesive waterproof roll according to claim 5, wherein the release force of the PE release film is 80-100 mN/25 mm; and/or

The thickness of the PE isolating film is 0.025-0.045 mm; and/or

The residual adhesion of the PE isolating film is 10-30%.

7. The self-adhesive waterproof roll according to claim 5, wherein the surface film is a high polymer material film or a modified high polymer material film.

8. The self-adhesive waterproof roll according to claim 5, wherein the asphalt-based coating covering material comprises the following raw material components in parts by weight:

9. The self-adhesive waterproof roll according to claim 5, wherein the thickness of the self-adhesive waterproof roll is 1.5-2.5 mm.

10. The self-adhesive waterproof roll material according to any one of claims 5 to 9, wherein the thermal shrinkage rate of the self-adhesive waterproof roll material is less than or equal to 2%, and the thermal shrinkage rate of the self-adhesive waterproof roll material is determined by a test method B in a test standard specified in GB/T328.12-2007.