Composition for modified asphalt sizing material, modified asphalt sizing material and preparation method, waterproofing roll material and preparation method

Abstract

The present invention relates to the field of asphalt materials, and discloses a modified asphalt rubber composition, a modified asphalt rubber and a preparation method, a waterproof roll material and a preparation method. The modified asphalt rubber composition contains: asphalt, a pour point depressant, a softening oil, a modifier, rubber powder and a filler. The waterproof material prepared from the modified asphalt rubber of the present invention has excellent weather resistance and ultra-low temperature resistance; and the method for preparing the waterproof roll material from the modified asphalt rubber of the present invention has the advantage of low cost.

Description

Technical Field

[0001] The present invention relates to the field of asphalt materials, and in particular to a composition for modified asphalt sizing, a modified asphalt sizing and a preparation method thereof, and a waterproofing roll and a preparation method thereof. Background Art

[0002] Self-adhesive waterproofing membrane is an important waterproofing material. It is easy to construct, simple and efficient, has strong self-healing properties, and has good waterproofing effects. It is widely welcomed by market clients. After being laid and applied, ordinary self-adhesive waterproofing membranes are affected by the combined effects of light, heat, oxygen and other factors. The material properties will decay over time, and the weather resistance will also be gradually weakened. The modified asphalt layer of the waterproofing membrane is prone to brittle cracking under low temperature conditions, especially in extremely cold environments (-35℃ and below), which will cause water to leak from the waterproof layer and cause leakage accidents.

[0003] At present, there are relatively few studies on ultra-low temperature self-adhesive waterproofing membranes at home and abroad, and the main way to achieve ultra-low temperature performance is to increase the amount of oil in the modified asphalt rubber formula of the product, and to add more modifiers. In terms of improving the weather resistance of self-adhesive waterproofing membranes, it is mainly through adding expensive anti-aging additives or by appropriately increasing the amount of modifiers to give waterproof materials excellent physical properties.

[0004] At present, self-adhesive waterproof membranes that have both weather resistance and ultra-low temperature performance are often produced without regard to cost, which makes the cost of such products relatively high and the selling price remains high. In addition, the market demand is small, which has become the main reason restricting waterproofing companies from vigorously developing such membranes.

[0005] CN113897174A discloses a self-adhesive waterproofing coiled material with improved low-temperature construction performance, a preparation method thereof and an application thereof, wherein the self-adhesive waterproofing coiled material with improved low-temperature construction performance comprises: petroleum asphalt, softening oil, base oil, pour point depressant, SBS modifier, SBR modifier, tackifying resin, rubber powder and filler. The self-adhesive waterproofing coiled material prepared by the self-adhesive waterproofing coiled material with improved low-temperature construction performance has low sensitivity to low temperatures, which helps to improve the construction efficiency of the self-adhesive waterproofing coiled material. Although this method improves low-temperature flexibility to a certain extent, it is costly and has limited effect, and weather resistance cannot be guaranteed.

[0006] Therefore, it is necessary to develop cost-effective weather-resistant ultra-low temperature self-adhesive waterproof membrane in production. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of high cost, poor weather resistance and poor low temperature performance of ultra-low temperature self-adhesive waterproof membrane in the prior art.

[0008] In order to achieve the above object, the first aspect of the present invention provides a modified asphalt rubber composition, wherein the modified asphalt rubber composition contains the following components:

[0009] Asphalt, diesel pour point depressant, softening oil, modifier, rubber powder and filler; the softening oil includes engine oil; the diesel pour point depressant is pour point depressant AK1223; the modifier is selected from at least two of SIS, SBS, SBR and thermoplastic rubber SAMYH-1901H;

[0010] Relative to 40 parts by weight of asphalt, the content of the diesel pour point depressant is 1-2 parts by weight, the content of the softening oil is 4.5-18 parts by weight, the content of the modifier is 8-16 parts by weight, the content of the rubber powder is 8-30 parts by weight, and the content of the filler is 20-30 parts by weight.

[0011] The second aspect of the present invention provides a use of the rubber composition described in the first aspect in a modified asphalt rubber.

[0012] The third aspect of the present invention provides a method for preparing a modified asphalt rubber, which is carried out using the components in the modified asphalt rubber composition described in the first aspect, comprising:

[0013] (1) subjecting asphalt, softened oil and diesel pour point depressant to a first reaction to obtain material I;

[0014] (2) subjecting the material I to a second reaction with a modifier to obtain a material II;

[0015] (3) subjecting the material II to a third reaction with the rubber powder to obtain material III;

[0016] (4) Carrying out a fourth reaction between the material III and the filler to obtain the modified asphalt rubber.

[0017] The fourth aspect of the present invention provides a modified asphalt rubber prepared by the method described in the third aspect.

[0018] A fifth aspect of the present invention provides a waterproof roll material, which comprises a reinforcement layer I, a modified asphalt self-adhesive layer, and a reinforcement layer II which are stacked in sequence;

[0019] The material forming the reinforcing layer I and the material forming the reinforcing layer II are the same or different, and are independently selected from at least one of an aluminized PETG non-release film and an aluminized PET release film;

[0020] The modified asphalt self-adhesive layer is formed by the modified asphalt rubber material described in the fourth aspect.

[0021] The sixth aspect of the present invention provides a method for preparing the waterproof roll material according to the fifth aspect, the method comprising:

[0022] The reinforcement layer I and the reinforcement layer II are arranged on both side surfaces of the modified asphalt self-adhesive layer for molding to obtain the waterproof roll material;

[0023] The modified asphalt self-adhesive layer is formed by the modified asphalt rubber material described in the fourth aspect.

[0024] The present invention has at least the following advantages:

[0025] (1) The waterproof roll material prepared from the modified asphalt rubber of the present invention has excellent weather resistance and ultra-low temperature resistance.

[0026] (2) The method for preparing waterproof roll material using the modified asphalt rubber of the present invention has the advantage of low cost. DETAILED DESCRIPTION

[0027] The endpoints and any values ​​of the ranges disclosed in this article 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 endpoint values ​​of each range, the endpoint values ​​of each range and the 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 as specifically disclosed in this article.

[0028] In the present invention, unless otherwise specified, directional words such as "two sides" refer to the two sides of the object whose surface areas are larger than the surface areas of other sides of the object.

[0029] The AK1223 indicates the model of the pour point depressant.

[0030] The SAMYH-1901H represents a model of thermoplastic rubber.

[0031] The SBS represents a styrene-butadiene-styrene block copolymer.

[0032] The SBR represents styrene butadiene rubber.

[0033] The SIS represents styrene-isoprene-styrene block copolymer.

[0034] As mentioned above, the first aspect of the present invention provides a modified asphalt rubber composition, wherein the modified asphalt rubber composition contains the following components:

[0035] Asphalt, diesel pour point depressant, softening oil, modifier, rubber powder and filler; the softening oil includes engine oil; the diesel pour point depressant is pour point depressant AK1223; the modifier is selected from at least two of SIS, SBS, SBR and thermoplastic rubber SAMYH-1901H;

[0036] Relative to 40 parts by weight of asphalt, the content of the diesel pour point depressant is 1-2 parts by weight, the content of the softening oil is 4.5-18 parts by weight, the content of the modifier is 8-16 parts by weight, the content of the rubber powder is 8-30 parts by weight, and the content of the filler is 20-30 parts by weight.

[0037] Preferably, the modifier is the thermoplastic rubber SAMYH-1901H, the SBS, the SBR and the SIS in a weight ratio of 1:1.2-2.0:1.5-2.5:0.4-1. The inventors of the present invention have found that, in this preferred case, the waterproof roll prepared from the modified asphalt rubber composition of the present invention has better ultra-low temperature resistance and weather resistance.

[0038] Preferably, the asphalt is a first asphalt and a second asphalt; the first asphalt is selected from at least one of 70# asphalt and 90# asphalt; and the second asphalt is F400 asphalt.

[0039] Further preferably, the weight content ratio of the first asphalt to the second asphalt is 1:0.4-0.7. The inventors of the present invention have found that, in this preferred case, the waterproof roll prepared from the modified asphalt rubber composition of the present invention has better ultra-low temperature resistance and weather resistance.

[0040] Preferably, the engine oil is waste engine oil, and the freezing point of the waste engine oil is ≤-32°C.

[0041] Preferably, the filler is selected from at least one of talc and heavy calcium powder.

[0042] Preferably, the softening oil further comprises Iranian oil and / or rubber oil.

[0043] Preferably, the particle size of the filler is 220-320 μm.

[0044] Preferably, the particle size of the rubber powder is 70-160 μm.

[0045] As mentioned above, the second aspect of the present invention provides a use of the rubber composition described in the first aspect in a modified asphalt rubber.

[0046] As mentioned above, the third aspect of the present invention provides a method for preparing a modified asphalt rubber, which is carried out using the components in the modified asphalt rubber composition described in the first aspect, comprising:

[0047] (1) subjecting asphalt, softened oil and diesel pour point depressant to a first reaction to obtain material I;

[0048] (2) subjecting the material I to a second reaction with a modifier to obtain a material II;

[0049] (3) subjecting the material II to a third reaction with the rubber powder to obtain material III;

[0050] (4) Carrying out a fourth reaction between the material III and the filler to obtain the modified asphalt rubber.

[0051] The types and amounts of the substances involved in the third aspect of the present invention are the same as the types and contents of the substances involved in the composition of the first aspect of the present invention. For example, relative to 40 parts by weight of asphalt, the content of the diesel pour point depressant is 1-2 parts by weight, the content of the softening oil is 4.5-18 parts by weight, the content of the modifier is 8-16 parts by weight, the content of the rubber powder is 8-30 parts by weight, and the content of the filler is 20-30 parts by weight.

[0052] In order to avoid redundancy, the present invention will not be repeated in the rest of the third aspect, and those skilled in the art should not understand it as a limitation of the present invention.

[0053] Preferably, the conditions of the first reaction include: temperature of 90-110° C. and time of 5-10 min.

[0054] Preferably, the conditions of the second reaction include: temperature of 155-175° C. and time of 15-25 min.

[0055] Preferably, the conditions of the third reaction include: temperature of 175-180° C. and time of 2.5-3.5 h.

[0056] Preferably, the fourth reaction conditions include: temperature of 175-180° C., and time of 0.5-1 h.

[0057] The method of the present invention may further include stirring the first reaction, the second reaction, the third reaction and the fourth reaction, and the stirring speeds of the first reaction, the second reaction, the third reaction and the fourth reaction are 200-250rpm, 300-350rpm, 400-450rpm and 350-400rpm respectively.

[0058] As mentioned above, the fourth aspect of the present invention provides a modified asphalt rubber prepared by the method described in the third aspect.

[0059] As mentioned above, the fifth aspect of the present invention provides a waterproof roll material, which comprises a reinforcement layer I, a modified asphalt self-adhesive layer, and a reinforcement layer II which are stacked in sequence;

[0060] The material forming the reinforcing layer I and the material forming the reinforcing layer II are the same or different, and are independently selected from at least one of an aluminized PETG non-release film and an aluminized PET release film;

[0061] The modified asphalt self-adhesive layer is formed by the modified asphalt rubber material described in the fourth aspect.

[0062] As mentioned above, the sixth aspect of the present invention provides a method for preparing the waterproof roll material according to the fifth aspect, the method comprising:

[0063] The reinforcement layer I and the reinforcement layer II are arranged on both side surfaces of the modified asphalt self-adhesive layer for molding to obtain the waterproof roll material;

[0064] The modified asphalt self-adhesive layer is formed by the modified asphalt rubber material described in the fourth aspect.

[0065] The specific operation methods and conditions of the molding treatment described in the sixth aspect of the present invention are not particularly limited and can be carried out by methods known in the art. The present invention will not go into details here and those skilled in the art should not understand this as a limitation of the present invention.

[0066] Exemplarily, the forming process includes: using a metal roller to extrude the reinforcement layer I and the reinforcement layer II respectively disposed on both sides of the modified asphalt self-adhesive layer, and obtaining the modified asphalt waterproofing membrane after cooling.

[0067] In the following examples, unless otherwise specified, the raw materials involved are all commercially available products.

[0068] In the following examples, unless otherwise specified, each "part" or each "part by weight" means 1 g.

[0069] Pour point depressant AK1223: Model AK1223, purchased from Shandong Aokai Chemical Co., Ltd.

[0070] Pour point depressant SL6060-1: Model SL6060-1, purchased from Shijiazhuang Shuanglong Petrochemical Co., Ltd.

[0071] Thermoplastic rubber SAMYH-1901H: Model SAMYH-1901H, purchased from Sinopec Baling Petrochemical Co., Ltd.

[0072] SBS: Model LG411S, purchased from Tianjin LGin Botian Chemical Co., Ltd. SBR: Model GSBR, purchased from Shandong Gaoshi Science and Technology Industry and Trade Co., Ltd. SIS: Model SIS YH-1105, purchased from Sinopec Baling Petrochemical Co., Ltd.

[0073] 80# asphalt: purchased from Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd.

[0074] 70# asphalt: purchased from Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd.

[0075] F400 asphalt: purchased from Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd.

[0076] Waste engine oil: freezing point -33°C.

[0077] The particle size of the filler used below was 250 μm.

[0078] The particle size of the rubber powder used below is 80 μm.

[0079] Example 1

[0080] This embodiment is used to illustrate the preparation method of the modified asphalt rubber, specifically, comprising:

[0081] (1) subjecting asphalt, softened oil and diesel pour point depressant to a first reaction to obtain material I;

[0082] (2) subjecting the material I to a second reaction with a modifier to obtain a material II;

[0083] (3) subjecting the material II to a third reaction with the rubber powder to obtain material III;

[0084] (4) Carrying out a fourth reaction between the material III and the filler to obtain the modified asphalt rubber.

[0085] The first reaction, the second reaction, the third reaction and the fourth reaction are carried out under stirring, and the stirring speeds are 200 rpm, 300 rpm, 400 rpm and 350 rpm respectively;

[0086] The modified asphalt rubber compound was obtained and named as J-1. The details are shown in Table 1.

[0087] Example 2

[0088] This embodiment adopts the method and process conditions similar to those of embodiment 1 to prepare the modified asphalt rubber, except that the amount of each raw material and the process conditions are different, as shown in Table 1;

[0089] The modified asphalt rubber was obtained and named as J-2.

[0090] Example 3

[0091] This embodiment adopts the method and process conditions similar to those of embodiment 1 to prepare the modified asphalt rubber, except that the amount of each raw material and the process conditions are different, as shown in Table 1;

[0092] The modified asphalt rubber was obtained and named as J-3.

[0093] Example 4

[0094] This embodiment adopts the method and process conditions similar to those of embodiment 1 to prepare the modified asphalt rubber, except that the type of the first asphalt is different, as shown in Table 1;

[0095] The modified asphalt rubber compound was obtained and named as J-4.

[0096] Example 5

[0097] This embodiment adopts the method and process conditions similar to those of embodiment 1 to prepare the modified asphalt rubber, except that the composition of the modifier is different, as shown in Table 1;

[0098] The modified asphalt rubber was obtained and named as J-5.

[0099] Example 6

[0100] This embodiment adopts the method and process conditions similar to those of embodiment 1 to prepare the modified asphalt rubber, except that the amount ratio of the first asphalt and the second asphalt is different, as shown in Table 1;

[0101] The modified asphalt rubber was obtained and named as J-6.

[0102] Example 7

[0103] This embodiment adopts the method and process conditions similar to those of embodiment 1 to prepare the modified asphalt rubber, except that the second asphalt is not added and the softened oil is replaced by an equal weight portion of waste engine oil, as shown in Table 1;

[0104] The modified asphalt rubber was obtained and named as J-7.

[0105] Comparative Example 1

[0106] This comparative example adopts a method and process conditions similar to those of Example 1 to prepare a modified asphalt rubber, except that the pour point depressant AK1223 is replaced by pour point depressant SL6060-1, as shown in Table 2;

[0107] The modified asphalt rubber was obtained and named as DJ-1.

[0108] Comparative Example 2

[0109] This comparative example uses a method and process conditions similar to those of Example 1 to prepare a modified asphalt rubber, except that no pour point depressant is added and the asphalt content is kept at 100 parts, as shown in Table 2;

[0110] The modified asphalt rubber was obtained and named as DJ-2.

[0111] Comparative Example 3

[0112] This comparative example adopts the method and process conditions similar to those of Example 1 to prepare the modified asphalt rubber, except that the type of modifier is different, as shown in Table 2;

[0113] The modified asphalt rubber compound was obtained and named as DJ-3.

[0114] Comparative Example 4

[0115] This comparative example adopts the method and process conditions similar to those of Example 1 to prepare the modified asphalt rubber, except that the amount of each raw material is different, as shown in Table 2;

[0116] The modified asphalt rubber was obtained and named as DJ-4.

[0117] Table 1

[0118]

[0119] Table 2

[0120]

[0121] Test Case

[0122] The ultra-low temperature resistance and peel strength of the waterproof membrane prepared in the example were tested according to GB3441-2009 Class N Type II. The results are shown in Tables 3 and 4.

[0123] Table 3

[0124]

[0125] Table 4

[0126]

[0127] The waterproof membranes prepared in Example 1 and Comparative Example 2 were placed outdoors for 7 days in summer to be subjected to comprehensive damage such as light, exposure to the sun, wind and rain. Then, their ultra-low temperature resistance and peel strength were tested according to GB3441-2009N Class II to evaluate their weather resistance. The results are shown in Table 5.

[0128] Table 5

[0129]

[0130] It can be seen from the above results that the waterproof membrane prepared by using the modified asphalt rubber of the present invention has significantly better ultra-low temperature resistance and weather resistance, and the peel strength index of the waterproof membrane is very stable.

[0131] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A modified asphalt rubber composition, characterized in that: The modified asphalt rubber composition contains the following components: Asphalt, diesel pour point depressant, softening oil, modifier, rubber powder and filler; the softening oil includes engine oil; the diesel pour point depressant is pour point depressant AK1223; the modifier is thermoplastic rubber SAMYH-1901H and SBS, and optionally, the modifier further contains SIS and / or SBR; Relative to 40 parts by weight of asphalt, the content of the diesel pour point depressant is 1-2 parts by weight, the content of the softening oil is 4.5-18 parts by weight, the content of the modifier is 8-16 parts by weight, the content of the rubber powder is 8-30 parts by weight, and the content of the filler is 20-30 parts by weight.

2. The sizing composition according to claim 1, characterized in that: The modifier is the thermoplastic rubber SAMYH-1901H, the SBS, the SBR and the SIS in a weight content ratio of 1:1.2-2.0:1.5-2.5:0.4-1.

3. The sizing composition according to claim 1 or 2, characterized in that: The asphalt is a first asphalt and a second asphalt; the first asphalt is selected from at least one of 70# asphalt and 90# asphalt; the second asphalt is F400 asphalt; And / or, the weight content ratio of the first asphalt to the second asphalt is 1:0.4-0.

7.

4. The sizing composition according to claim 1 or 2, characterized in that: The engine oil is waste engine oil, and the freezing point of the waste engine oil is ≤-32°C; And / or, the filler is selected from at least one of talc and heavy calcium powder; And / or, the sizing composition further comprises Iranian oil and / or rubber oil.

5. Use of the sizing composition according to any one of claims 1 to 4 in modified asphalt sizing.

6. A method for preparing a modified asphalt rubber, characterized in that: The method is carried out using the components in the modified asphalt rubber composition according to any one of claims 1 to 4, and comprises: (1) subjecting asphalt, softened oil, and diesel pour point depressant to a first reaction to obtain material I; (2) subjecting the material I to a second reaction with a modifier to obtain a material II; (3) subjecting the material II to a third reaction with the rubber powder to obtain material III; (4) subjecting the material III to a fourth reaction with a filler to obtain the modified asphalt rubber.

7. The method according to claim 6, characterized in that The conditions of the first reaction include: temperature of 90-110°C and time of 5-10 min; And / or, the conditions of the second reaction include: temperature of 155-175°C, time of 15-25min; And / or, the conditions of the third reaction include: temperature of 175-180° C., time of 2.5-3.5 h; And / or, the conditions of the fourth reaction include: temperature of 175-180° C. and time of 0.5-1 h.

8. The modified asphalt rubber prepared by the method according to claim 6 or 7.

9. A waterproof roll material, characterized in that: The waterproof roll material comprises a reinforcement layer I, a modified asphalt self-adhesive layer, and a reinforcement layer II which are stacked in sequence; The material forming the reinforcing layer I and the material forming the reinforcing layer II are the same or different, and are independently selected from at least one of an aluminized PETG non-release film and an aluminized PET release film; The modified asphalt self-adhesive layer is formed by the modified asphalt rubber material according to claim 8.

10. A method for preparing the waterproof coiled material according to claim 9, characterized in that: The method includes: The reinforcement layer I and the reinforcement layer II are arranged on both side surfaces of the modified asphalt self-adhesive layer and subjected to molding treatment to obtain the waterproof roll material.

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