Composition for waterproof coiled material, waterproof coiled material and preparation method of waterproof coiled material

Abstract

The invention relates to the technical field of waterproof coiled materials, and discloses a composition for a waterproof coiled material, the waterproof coiled material and a preparation method of the waterproof coiled material. The composition contains a main agent and an auxiliary agent, wherein the main agent contains asphalt, a hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic resin, a styrene-butadiene-styrene block copolymer, mica powder and aromatic oil; on the basis of the total weight of the composition, the content of the asphalt is 40wt%-60wt%, the content of the hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer is 10wt%-20wt%, the content of the polyacrylic resin is 10wt%-18wt%, the content of the styrene-butadiene-styrene block copolymer is 5wt%-8wt%, the content of the mica powder is 8wt%-15wt%, the content of the curing agent is 5wt%-8wt%, and the content of the curing agent is 5wt%-8wt%. The content of the aromatic hydrocarbon oil is 5wt%-12wt%. The waterproof coiled material prepared from the composition has excellent oil locking property, stability, adhesion and heat resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coiled materials, and in particular to a composition for waterproof coiled materials, a waterproof coiled material and a preparation method thereof. Background Art

[0002] Traditional waterproofing membranes are mostly ordinary modified asphalt waterproofing membranes. This type of membrane usually adds simple modifiers, such as rubber or resin modifiers, to the asphalt to improve some of the properties of the asphalt.

[0003] However, ordinary modified asphalt waterproofing membranes have many limitations in performance. When faced with complex usage environments, it is difficult to simultaneously meet multiple requirements such as good oil lock, stability, adhesion and heat resistance.

[0004] For example, in environments where there may be contact with oil, such as garages and factories, ordinary modified asphalt waterproofing membranes are prone to oil penetration; in environments with large changes in temperature and humidity, their performance fluctuates significantly, their stability is poor, and their service life is short; the bonding effect with the base material is poor, and they are prone to problems such as hollowing and falling off; in high temperature environments (such as when the roof is exposed to high temperatures in the summer), the asphalt in ordinary modified asphalt waterproofing membranes is easy to flow and age, affecting their structural integrity and waterproof performance.

[0005] Therefore, there is an urgent need to provide a waterproof membrane with excellent oil lock, stability, adhesion and heat resistance to meet the use requirements of modern building waterproofing projects in complex environments. Summary of the Invention

[0006] The object of the present invention is to provide a waterproof roll material having excellent oil-locking property, stability, adhesion and heat resistance.

[0007] In order to achieve the above-mentioned object, the first aspect of the present invention provides a composition for waterproofing membrane, which comprises a main agent and an auxiliary agent, wherein the main agent comprises asphalt, hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic resin, styrene-butadiene-styrene block copolymer, mica powder and aromatic oil;

[0008] Based on the total weight of the composition, the content of the asphalt is 40wt%-60wt%, the content of the hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer is 10wt%-20wt%, the content of the polyacrylic resin is 10wt%-18wt%, the content of the styrene-butadiene-styrene block copolymer is 5wt%-8wt%, the content of the mica powder is 8wt%-15wt%, and the content of the aromatic oil is 5wt%-12wt%;

[0009] The softening point of the polyacrylic acid resin is ≥140°C, and the acid value of the polyacrylic acid resin is ≥215;

[0010] The content of styrene in the styrene-butadiene-styrene block copolymer is less than or equal to 30 wt %.

[0011] The second aspect of the present invention provides a method for preparing a waterproof roll, which is carried out using the components of the composition described in the first aspect, comprising:

[0012] The components in the main agent and the components in the auxiliary agent are mixed and contacted to obtain the waterproof membrane.

[0013] The third aspect of the present invention provides a waterproof roll prepared by the method described in the second aspect.

[0014] The waterproof roll material composition provided by the present invention comprises a specific styrene-butadiene-styrene block copolymer (styrene content ≤30wt%), a polyacrylic resin (softening point ≥140°C, acid value ≥215), a hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, asphalt, mica powder and aromatic oil, which can form a stable network structure through reasonable proportioning and interaction.

[0015] The waterproof roll material obtained by using the waterproof roll material composition provided by the present invention has excellent oil lock, weather resistance, stability, adhesion and heat resistance, and meets the use requirements of modern building waterproofing projects in complex environments. DETAILED DESCRIPTION

[0016] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0017] As mentioned above, the first aspect of the present invention provides a composition for waterproofing membrane, which contains a main agent and an auxiliary agent, wherein the main agent includes asphalt, hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic resin, styrene-butadiene-styrene block copolymer, mica powder and aromatic oil;

[0018] Based on the total weight of the composition, the content of the asphalt is 40wt%-60wt%, the content of the hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer is 10wt%-20wt%, the content of the polyacrylic resin is 10wt%-18wt%, the content of the styrene-butadiene-styrene block copolymer is 5wt%-8wt%, the content of the mica powder is 8wt%-15wt%, and the content of the aromatic oil is 5wt%-12wt%;

[0019] The softening point of the polyacrylic acid resin is ≥140°C, and the acid value of the polyacrylic acid resin is ≥215;

[0020] The content of styrene in the styrene-butadiene-styrene block copolymer is less than or equal to 30 wt %.

[0021] Preferably, the hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer has a melt index of 24-28 g / 10 min at 230° C. and a load of 2.16 kg. The inventors of the present invention have found that in this preferred embodiment, the obtained waterproof membrane has better oil-locking properties and stability.

[0022] Preferably, the content ratio of the polyacrylic resin to the styrene-butadiene-styrene block copolymer is 2-3: 1. The inventors of the present invention have found that in this preferred embodiment, the obtained waterproof membrane has better high and low temperature performance (heat resistance and low temperature flexibility).

[0023] Preferably, the asphalt is selected from at least one of 70#, 90#, and 200#.

[0024] Preferably, the mica powder has an average particle diameter of 40-100 μm.

[0025] Preferably, the pour point of the aromatic oil is -15°C to -5°C.

[0026] Preferably, the auxiliary agent includes a curing agent, a coupling agent and an antioxidant;

[0027] Based on the total weight of the composition, the content of the curing agent is 3wt%-7wt%, the content of the coupling agent is 1wt%-3wt%, and the content of the antioxidant is 0.5wt%-2wt%.

[0028] Preferably, the curing agent is a polyisocyanate curing agent, and the content of isocyanate groups in the curing agent is ≥18 wt %.

[0029] Preferably, the coupling agent is a silane coupling agent.

[0030] Preferably, the coupling agent is selected from at least one of KH550, KH560, and KH570.

[0031] Preferably, the antioxidant is a thioester antioxidant and a hindered phenol antioxidant in a mass ratio of 1: (0.8-1.2). The inventors of the present invention have found that under this preferred condition, the obtained waterproof membrane has excellent aging resistance.

[0032] Preferably, the thioester antioxidant is selected from at least one of the antioxidant DLTDP and the antioxidant DSTP.

[0033] Preferably, the hindered phenol antioxidant is selected from at least one of antioxidant 264, antioxidant 1010, and antioxidant 300.

[0034] As mentioned above, the second aspect of the present invention provides a method for preparing a waterproof roll, which is carried out using the components of the composition described in the first aspect, comprising:

[0035] The components in the main agent and the components in the auxiliary agent are mixed and contacted to obtain the waterproof membrane.

[0036] In order to obtain a waterproof coiled material with better performance, according to a preferred embodiment, the step of mixing the components in the main agent and the components in the auxiliary agent comprises:

[0037] (1) subjecting asphalt, aromatic oil, hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic acid resin, and curing agent to a first heat treatment to obtain an intermediate I;

[0038] (2) subjecting the intermediate I and the styrene-butadiene-styrene block copolymer to a second heat treatment to obtain an intermediate II;

[0039] (3) stirring and mixing the intermediate II, mica powder, coupling agent, and antioxidant to obtain intermediate III;

[0040] (4) curing and molding the intermediate III to obtain the waterproof roll.

[0041] Preferably, in step (1), the conditions of the first heat treatment include: temperature of 120-140° C., time of 100-140 min, and rotation speed of 400-600 rpm.

[0042] Preferably, in step (2), the conditions of the second heating treatment include: temperature of 175-180° C., time of 100-140 min, and rotation speed of 400-600 rpm.

[0043] Preferably, in step (3), the stirring and mixing conditions include: temperature of 170-175° C., time of 100-140 min, and rotation speed of 400-600 rpm.

[0044] According to another preferred embodiment, in step (4), the curing and molding step includes: uniformly coating the intermediate III on the pretreated base through a coating device, then curing and molding it through a pair of rollers, and then cooling and curling it in sequence to obtain the waterproof roll.

[0045] Preferably, the pretreated tire base is obtained by impregnating a polyester tire with 10# asphalt and then squeezing it with a roller.

[0046] Preferably, the polyester tire has a gram weight of 290-330 g / m2.

[0047] Preferably, the temperature of the immersion treatment is 175-185°C.

[0048] The present invention has no special requirements for the time of the immersion treatment. Those skilled in the art can select it according to conventional technical means in the field, and the present invention will not go into details here.

[0049] It should be noted that the present invention has no special requirements for the selection of the coating equipment. Those skilled in the art can make the selection according to conventional technical means in the field, and the present invention will not elaborate on it here.

[0050] It should be noted that the present invention has no special requirements for the cooling and curling operations, and those skilled in the art can make their own selections based on conventional techniques in the art, which will not be elaborated herein.

[0051] As mentioned above, the third aspect of the present invention provides a waterproof roll prepared by the method described in the second aspect.

[0052] The present invention will be described in detail below by way of examples. In the following examples, unless otherwise specified, all instruments and raw materials used are commercially available.

[0053] Asphalt: Model is 70#.

[0054] Polyacrylic resin:

[0055] Polyacrylic acid resin I: having an acid value of 250 mgKOH / g and a softening point of 150° C., purchased from Yingde Xinlian Chemical Co., Ltd., with a brand number of 605.

[0056] Polyacrylic acid resin DI: The acid value is 155 mgKOH / g, and the softening point of the polyacrylic acid resin is 115. It was purchased from Yingde Xinlian Chemical Co., Ltd. with a brand number of 925.

[0057] Styrene-butadiene-styrene block copolymer:

[0058] Styrene-butadiene-styrene block copolymer I: the styrene content is 23 wt %, purchased from Dongguan Suwei New Materials Co., Ltd., brand D1116K.

[0059] Styrene-butadiene-styrene block copolymer DI: the styrene content is 40 wt %, purchased from Dongguan Suwei New Materials Co., Ltd., with the brand name Kraton D1155J.

[0060] Hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer:

[0061] Hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer: SEEPS-OH, with a melt index of 26 g / 10 min at 230° C. and a load of 2.16 kg, was purchased from Kuraray International Trading (Shanghai) Co., Ltd.

[0062] Styrene-ethylene-ethylene-propylene-styrene copolymer: SEEPS, with a melt index of 1 g / 10 min at 230° C. and a load of 2.16 kg, was purchased from Kuraray International Trading (Shanghai) Co., Ltd. with the brand name 4030S.

[0063] Mica powder: The average particle diameter is 44 μm, purchased from Tianbao Haotong Stone Processing Factory Co., Ltd. in Hongqiao District, Tianjin, with the brand name TB-M325.

[0064] Aromatic oil: pour point is -5°C, purchased from Hengshui Diyi Petrochemical Co., Ltd., brand G17.

[0065] Curing agent: polyisocyanate curing agent, the isocyanate group content is 21wt%, purchased from Shanghai Bolino New Material Technology Co., Ltd., brand CL-9189.

[0066] Coupling agent: KH560, purchased from Jinan Changyingda Chemical Co., Ltd.

[0067] Antioxidant: a thioester antioxidant (antioxidant DLTDP) and a hindered phenol antioxidant (antioxidant 1010) in a mass ratio of 1:1.

[0068] Pretreated tire base: a 310g / m2 long-fiber polyester tire was placed in a pre-impregnation tank containing 10# asphalt at 180°C, and then squeezed dry on a roller to obtain the same; wherein, the long-fiber polyester tire was purchased from Hubei Youbu Nonwoven Fabric Co., Ltd.

[0069] In the following examples, unless otherwise specified, each part by weight = 100 g.

[0070] Example 1

[0071] This example is used to illustrate the preparation of waterproof membrane according to the following steps with reference to the formula in Table 1:

[0072] (1) subjecting asphalt, aromatic oil, hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic acid resin, and curing agent to a first heat treatment to obtain an intermediate I;

[0073] (2) subjecting the intermediate I and the styrene-butadiene-styrene block copolymer to a second heat treatment to obtain an intermediate II;

[0074] (3) stirring and mixing the intermediate II, mica powder, coupling agent, and antioxidant to obtain intermediate III;

[0075] (4) The intermediate III is evenly coated on the pretreated base through a coating device, and then solidified and formed by a pair of rollers, and then cooled and curled in sequence to obtain the waterproof membrane;

[0076] First heating treatment: temperature 120°C, time 120 min, rotation speed 500 rpm;

[0077] The second heating treatment was performed at a temperature of 175° C., a time of 120 min, and a rotation speed of 500 rpm.

[0078] Stirring and mixing: temperature is 175°C, time is 120 min, and speed is 500 rpm.

[0079] Example 2

[0080] This embodiment is carried out in a similar manner to that of embodiment 1, except that the formula is as shown in Table 1, and the unlisted parts are the same as those of embodiment 1, to prepare a waterproof membrane.

[0081] Example 3

[0082] This example was carried out using a method similar to that of Example 1, except that the mass ratio of the polyacrylic acid resin to the styrene-butadiene-styrene block copolymer was adjusted to 1.5:1 while the total weight of the polyacrylic acid resin and the styrene-butadiene-styrene block copolymer remained unchanged. The unlisted parts were the same as those of Example 1 to prepare a waterproof membrane.

[0083] Comparative Example 1

[0084] This comparative example was carried out using a method similar to that of Example 1, except that equal parts by weight of styrene-ethylene-ethylene-propylene-styrene copolymer were used to replace the hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer in Example 1, and the unlisted parts were the same as in Example 1 to prepare a waterproof membrane.

[0085] Comparative Example 2

[0086] This comparative example was carried out using a method similar to that of Example 1, except that equal weight portions of polyacrylic resin DI were used to replace the polyacrylic resin I in Example 1, and the unlisted parts were the same as those in Example 1 to prepare a waterproof membrane.

[0087] Comparative Example 3

[0088] This comparative example was carried out using a method similar to that of Example 1, except that an equal weight portion of styrene-butadiene-styrene block copolymer DI was used to replace the styrene-butadiene-styrene block copolymer I in Example 1. The unlisted parts were the same as those in Example 1 to prepare a waterproof membrane.

[0089] Table 1

[0090]

[0091]

[0092] Test Case

[0093] The performance of the waterproof membrane prepared in the above example was measured with reference to the method in Table 2. The results are shown in Table 3.

[0094] Table 2

[0095] Reference Standards Oil lock property (testing the number of oil permeation filter papers at 120℃) GB18242-2008 Weather resistance (bonding strength between heat-aged membrane and cement mortar) GB / T35467-2017 Stability (low temperature flexibility attenuation value before and after aging) GB / T35467-2017 Adhesion (bonding strength between coil and aluminum plate) GB23441-2009 Heat resistance GB18242-2008

[0096] Table 3

[0097]

[0098] The above results show that the waterproof roll prepared by using the waterproof roll composition provided by the present invention has excellent oil lock, weather resistance, stability, adhesion and heat resistance, and meets the use requirements of modern building waterproofing projects in complex environments.

[0099] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A composition for waterproof roll, characterized in that: The composition contains a main agent and auxiliary agents, wherein the main agent includes asphalt, hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic resin, styrene-butadiene-styrene block copolymer, mica powder and aromatic oil; Based on the total weight of the composition, the content of the asphalt is 40wt%-60wt%, the content of the hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer is 10wt%-20wt%, the content of the polyacrylic resin is 10wt%-18wt%, the content of the styrene-butadiene-styrene block copolymer is 5wt%-8wt%, the content of the mica powder is 8wt%-15wt%, and the content of the aromatic oil is 5wt%-12wt%; The softening point of the polyacrylic acid resin is ≥140°C, and the acid value of the polyacrylic acid resin is ≥215; The content of styrene in the styrene-butadiene-styrene block copolymer is less than or equal to 30 wt %.

2. The composition according to claim 1, characterized in that The hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer has a melt index of 24-28 g / 10 min at 230° C. and a load of 2.16 kg.

3. The composition according to claim 1 or 2, characterized in that The content ratio of the polyacrylic resin to the styrene-butadiene-styrene block copolymer is 2-3:

1.

4. The composition according to claim 1 or 2, characterized in that The auxiliary agents include curing agents, coupling agents and antioxidants; Based on the total weight of the composition, the content of the curing agent is 3wt%-7wt%, the content of the coupling agent is 1wt%-3wt%, and the content of the antioxidant is 0.5wt%-2wt%.

5. The composition according to claim 4, characterized in that The curing agent is a polyisocyanate curing agent, and the content of isocyanate groups in the curing agent is ≥18wt%; And / or, the coupling agent is a silane coupling agent.

6. The composition according to claim 4, characterized in that The antioxidants are a thioester antioxidant and a hindered phenol antioxidant in a mass ratio of 1: (0.8-1.2).

7. A method for preparing a waterproof roll, characterized in that: The method is carried out using the components of the composition according to any one of claims 1 to 6, comprising: The components in the main agent and the components in the auxiliary agent are mixed and contacted to obtain the waterproof membrane.

8. The method according to claim 7, characterized in that The steps of mixing and contacting the components in the main agent and the components in the auxiliary agent include: (1) subjecting asphalt, aromatic oil, hydroxystyrene-ethylene-ethylene-propylene-styrene copolymer, polyacrylic acid resin, and curing agent to a first heat treatment to obtain an intermediate I; (2) subjecting the intermediate I and the styrene-butadiene-styrene block copolymer to a second heat treatment to obtain an intermediate II; (3) stirring and mixing the intermediate II, mica powder, coupling agent, and antioxidant to obtain intermediate III; (4) curing and molding the intermediate III to obtain the waterproof roll.

9. The method according to claim 8, characterized in that In step (1), the conditions of the first heat treatment include: temperature of 120-140°C, time of 100-140 min, and rotation speed of 400-600 rpm; And / or, in step (2), the conditions of the second heat treatment include: temperature of 175-180° C., time of 100-140 min, and rotation speed of 400-600 rpm.

10. A waterproof roll prepared by the method according to any one of claims 7 to 9.

Images