Tpo functional master batch, tpo functional master batch and method for producing the same, composition for waterproofing sheet, waterproofing sheet and method for producing the same

Abstract

The present application relates to the technical field of TPO waterproof roll material, and discloses a TPO functional master batch composition, a TPO functional master batch and a preparation method thereof, a waterproof roll material composition, a waterproof roll material and a preparation method thereof.The TPO functional master batch composition contains a TPO elastomer, a first component, a second component, a metal salt, a crosslinking agent, stearic acid and calcium stearate; relative to 100 parts by weight of the TPO elastomer, the content of the first component is 10-20 parts by weight, the content of the second component is 1-5 parts by weight, the content of the metal salt is 2-8 parts by weight, the content of the crosslinking agent is 0.1-1.5 parts by weight, and the total content of the calcium stearate and the stearic acid is 0.5-3 parts by weight; the TPO functional master batch obtained by using the TPO functional master batch composition has a good application prospect in the preparation of TPO waterproof roll material.

Description

Technical Field

[0001] This invention relates to the field of TPO waterproof membrane technology, specifically to compositions for TPO functional masterbatches, TPO functional masterbatches and their preparation methods, compositions for waterproof membranes, and waterproof membranes and their preparation methods. Background Technology

[0002] Thermoplastic polyolefins (TPO) are copolymers formed with ethylene and propylene as the main materials. Because their molecular chains are saturated, the content of tertiary carbon atoms is relatively small, and they do not contain polar atoms, they have a certain degree of chemical stability.

[0003] In addition, TPO material has the advantages of low density and good low-temperature toughness, and it also possesses the good processing properties of plastics and the excellent toughness of rubber, making it suitable for processing with conventional equipment. TPO material is a promising new material, especially suitable for use in the field of waterproof membranes.

[0004] When TPO waterproof membranes are used on exposed single-layer roofs, they are usually subjected to long-term high temperature or alternating high and low temperature conditions. If the product's thermal stability is insufficient, it is prone to thermal aging in a short period of time; or the poor dimensional stability of the waterproof membrane (excessive dimensional change rate) may lead to weld failure, resulting in the failure of the waterproof project.

[0005] Therefore, thermal stability and dimensional stability are key technical indicators in the development and application of TPO waterproof membranes.

[0006] Currently, chemical cross-linking, the addition of inorganic fillers, or the addition of organic rigid fillers are commonly used to improve the stability of TPO waterproof membranes.

[0007] Chemical crosslinking to form a molecular chain network within the TPO matrix can effectively improve the overall stability of the material, but this technical route has low controllability and is prone to problems in practice.

[0008] While adding inorganic fillers can improve the thermal and dimensional stability of TPO waterproof membranes to some extent, in actual production, the fillers tend to agglomerate, resulting in poor improvement and a significant decrease in the elongation at break of the TPO waterproof membrane.

[0009] The overall stability of TPO waterproof membranes obtained by adding organic rigid fillers to the formulation still needs to be improved.

[0010] Therefore, developing a TPO waterproof membrane with good thermal and dimensional stability is of great significance. Summary of the Invention

[0011] The present application aims to overcome the poor thermal stability and dimensional stability of the TPO waterproofing membrane in the prior art.

[0012] To achieve the above-mentioned object, the first aspect of the present application provides a TPO functional masterbatch composition, which comprises a TPO elastomer, a first component, a second component, a metal salt, a crosslinking agent, calcium stearate and stearic acid;

[0013] The content of the first component is 10-20 parts by weight, the content of the second component is 1-5 parts by weight, the content of the metal salt is 2-8 parts by weight, the content of the crosslinking agent is 0.1-1.5 parts by weight, and the total content of the calcium stearate and the stearic acid is 0.5-3 parts by weight, relative to 100 parts by weight of the TPO elastomer;

[0014] The first component is polyethylene and / or polypropylene, the melt index of the polyethylene at 190℃ under a load of 2.16kg is 0.1-2.5g / 10min, and the melt index of the polypropylene at 230℃ under a load of 2.16kg is 1.5-3.5g / 10min;

[0015] The second component is selected from polar monomers containing any one of hydroxyl, carboxyl and amino groups;

[0016] The metal salt is selected from at least one of zinc acetate, zinc triflate and iron chloride;

[0017] The content mass ratio of the calcium stearate to the stearic acid is 1:0.16-6.

[0018] The second aspect of the present application provides a method for preparing a TPO functional masterbatch, which comprises: granulating a mixture to obtain the TPO functional masterbatch;

[0019] The mixture is a material obtained by mixing the components in the composition of the first aspect.

[0020] The third aspect of the present application provides a TPO functional masterbatch prepared by the method of the second aspect.

[0021] The fourth aspect of the present application provides a TPO waterproofing membrane composition, which comprises a TPO elastomer, a TPO functional masterbatch, a color masterbatch, an antioxidant and a light stabilizer;

[0022] The content of the TPO functional masterbatch is 5-40 parts by weight, the content of the color masterbatch is 1-6 parts by weight, the content of the antioxidant is 0.3-1 part by weight, and the content of the light stabilizer is 0.5-2 parts by weight, relative to 100 parts by weight of the TPO elastomer;

[0023] The TPO functional masterbatch is the TPO functional masterbatch described in the third aspect above.

[0024] A fifth aspect of the present invention provides a method for preparing a TPO waterproof membrane, the method comprising:

[0025] (1) The composition described in the fourth aspect above is subjected to contact stirring to obtain a mixture;

[0026] (2) The mixture is extruded to obtain the TPO waterproof membrane.

[0027] A sixth aspect of the present invention provides a waterproof membrane prepared by the method described in the fifth aspect above.

[0028] The TPO functional masterbatch composition provided by this invention effectively improves the stability of molecular chains in the microstructure of the matrix by means of physical cross-linking based on factors such as van der Waals forces and non-covalent cross-linking networks based on electrostatic forces.

[0029] The TPO functional masterbatch prepared using the composition provided by this invention has good application prospects in the preparation of TPO waterproof membranes.

[0030] The components in the TPO waterproof membrane composition provided by this invention have excellent compatibility. After blending, the probability of material agglomeration can be effectively reduced, thus effectively ensuring product performance.

[0031] The TPO waterproof membrane prepared using the composition provided by this invention has good thermal stability and dimensional stability. Detailed Implementation

[0032] The endpoints and any values ​​of the ranges 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 endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0033] As previously described, a first aspect of the present invention provides a composition for TPO functional masterbatch, the composition comprising TPO elastomer, a first component, a second component, a metal salt, a crosslinking agent, calcium stearate, and stearic acid;

[0034] The content of the first component is 10-20 parts by weight, the content of the second component is 1-5 parts by weight, the content of the metal salt is 2-8 parts by weight, the content of the crosslinking agent is 0.1-1.5 parts by weight, and the total content of the calcium stearate and the stearic acid is 0.5-3 parts by weight, relative to 100 parts by weight of the TPO elastomer;

[0035] The first component is polyethylene and / or polypropylene, the melt index of the polyethylene at 190℃ under a load of 2.16kg is 0.1-2.5g / 10min, and the melt index of the polypropylene at 230℃ under a load of 2.16kg is 1.5-3.5g / 10min;

[0036] The second component is selected from polar monomers containing any one of hydroxyl, carboxyl, and amino groups;

[0037] The metal salt is selected from at least one of zinc acetate, zinc triflate, and iron chloride;

[0038] The content mass ratio of the calcium stearate to the stearic acid is 1:0.16-6.

[0039] Preferably, the content mass ratio of the calcium stearate to the stearic acid is 1:0.5-1.5. The inventors of the present application have found that, in this preferred case, the TPO functional masterbatch obtained is applied to the preparation of a TPO waterproofing membrane, so that the stability of the TPO waterproofing membrane is better.

[0040] Preferably, the melt mass flow rate of the TPO elastomer under a load of 2.16kg at 230℃ is 0.5-15g / 10min. The inventors of the present application have found that, in this preferred case, the TPO functional masterbatch obtained by the method of extrusion granulation is applied to the TPO waterproofing membrane formula, so that the stability of the TPO waterproofing membrane is better.

[0041] Preferably, the polyethylene is high-density polyethylene with a density of not less than 0.941-0.960g / cm 3 and / or linear low-density polyethylene with a density of not more than 0.93g / cm 3 .

[0042] Preferably, the crosslinking agent is selected from at least one of dicumyl peroxide, di-t-butyl peroxide, and dibenzoyl peroxide.

[0043] Preferably, the second component is selected from at least one of maleic anhydride, glycidyl methacrylate, and hydroxyethyl methacrylate.

[0044] As described above, the second aspect of the present application provides a method for preparing a TPO functional masterbatch, the method comprising:

[0045] The mixture is subjected to a granulation treatment to obtain the TPO functional masterbatch.

[0046] The mixture is a material obtained by mixing the components in the composition according to the first aspect.

[0047] Preferably, the mixing treatment is performed in an extruder.

[0048] Preferably, the granulation treatment is performed at a temperature of 170-220°C and a screw rotation speed of 15-45 rpm.

[0049] As described above, the third aspect of the present application provides a TPO functional masterbatch prepared by the method according to the second aspect.

[0050] As described above, the fourth aspect of the present application provides a composition for TPO waterproofing membrane, which contains a TPO elastomer, a TPO functional masterbatch, a color masterbatch, an antioxidant and a light stabilizer.

[0051] The content of the TPO functional masterbatch is 5-40 parts by weight, the content of the color masterbatch is 1-6 parts by weight, the content of the antioxidant is 0.3-1 part by weight, and the content of the light stabilizer is 0.5-2 parts by weight, relative to 100 parts by weight of the TPO elastomer.

[0052] The TPO functional masterbatch is the TPO functional masterbatch according to the third aspect.

[0053] Preferably, the content of the TPO functional masterbatch is 10-25 parts by weight, the content of the color masterbatch is 2-4 parts by weight, the content of the antioxidant is 0.5-1 part by weight, and the content of the light stabilizer is 1-2 parts by weight, relative to 100 parts by weight of the TPO elastomer.

[0054] Preferably, the TPO elastomer is an ethylene-alpha olefin copolymer and / or a propylene-alpha olefin copolymer; more preferably, the TPO elastomer is selected from at least one of Basell CA10A, Basell CA60A and SK Energy NS06.

[0055] The antioxidant is selected from at least one of antioxidant 1010, antioxidant 1076 and antioxidant 168.

[0056] The light stabilizer is selected from at least one of light stabilizer 770, light stabilizer 2020, UV-531, UV-326 and UV-327.

[0057] As described above, the fifth aspect of the present application provides a method for preparing a TPO waterproofing membrane, which comprises:

[0058] (1) contacting and stirring each component in the composition of the fourth aspect to obtain a mixture;

[0059] (2) extruding the mixture to obtain the TPO waterproofing membrane.

[0060] Exemplarily, the contacting and stirring can be performed in a high-speed mixer.

[0061] Preferably, in step (1), the contacting and stirring is performed at a temperature of 20-35°C, a rotation speed of 300-1000 rpm, and for a time of 20-40 min.

[0062] Preferably, in step (2), the extruding is performed at an extruder temperature of 145-225°C, a screw rotation speed of 10-40 rpm, and a linear speed of 2-6 m / min.

[0063] Preferably, the method further comprises calendering, drawing and winding the material obtained from the extruding in sequence.

[0064] The present application does not have any particular requirements for the conditions of the calendering, the drawing and the winding, and a person skilled in the art can select them according to the needs within the known parameters in the art.

[0065] As described above, the sixth aspect of the present application provides a waterproofing membrane prepared by the method of the fifth aspect.

[0066] The present application will be described in detail below by way of examples. In the following examples, various instruments and materials used are commercially available unless otherwise specified.

[0067] TPO elastomer:

[0068] Elastomer I-1: Sinochem NS06, melt mass-flow rate at 230°C under a load of 2.16 kg of 0.7 g / 10 min, commercially available from Wuhan Sinochem Company, manufacturer Sinochem Company.

[0069] Elastomer I-2: Basell CA10A, melt mass-flow rate at 230°C under a load of 2.16 kg of 0.6 g / 10 min, commercially available from Shanghai Chao Shi Plasticizing Company, manufacturer Lyondell Basell Industries Company.

[0070] Elastomer I-3: Basell CA60A, melt mass-flow rate at 230°C under a load of 2.16 kg of 14 g / 10 min, commercially available from Shanghai Chao Shi Plasticizing Company, manufacturer Lyondell Basell Industries Company.

[0071] First component:

[0072] Linear low density polyethylene: LLDPE, density 0.919 g / cm3, melt index at 190 °C, 2.16 kg load 2.1 g / 10 min, available from ExxonMobil, brand ExxonMobil TM LD 2119.LN Molding.

[0073] High density polyethylene: HDPE, density 0.946 g / cm 3 , melt index at 190 °C, 2.16 kg load 0.18 g / 10 min, available from Saudi Aramco Philipps, brand TR144.

[0074] Polypropylene:

[0075] Homopolymer polypropylene (PPH), melt index at 230 °C, 2.16 kg load 2.8 g / 10 min, available from ExxonMobil, brand ExxonMobil TM PP4712E1.

[0076] Impact polypropylene (PPB), melt index at 230 °C, 2.16 kg load 2.5 g / 10 min, available from PetroChina Dushanzi Petrochemical Co., Ltd., brand K8003.

[0077] Second component:

[0078] Second component I-1 : 2,3-epoxypropyl methacrylate.

[0079] Second component I-2: maleic anhydride.

[0080] Second component I-3: hydroxyethyl methacrylate.

[0081] Second component II: triphenylpropylacrylonitrile, available from Shanghai Macklin, brand T970426.

[0082] Metal salt:

[0083] Metal salt I-1 : iron chloride.

[0084] Metal salt I-2: zinc acetate.

[0085] Metal salt I-3: zinc triflate.

[0086] Metal salt II: barium sulfate

[0087] Crosslinker:

[0088] Crosslinker I-1 : dibenzoyl peroxide.

[0089] Crosslinking agent I-2: dicumyl peroxide.

[0090] Crosslinking agent I-3: di-tert-butyl peroxide.

[0091] Calcium carbonate: heavy calcium carbonate, purchased from Omya (Shanghai) Investment Co., Ltd., with the trade name of OMYACARB 5.

[0092] Crosslinked polystyrene microspheres: particle size D50 is 3 μm, purchased from Dongguan Kemai New Material Co., Ltd., with the trade name of KM-503.

[0093] Antioxidant:

[0094] Antioxidant 1010 (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester), purchased from BASF (China) Co., Ltd., with the trade name of Irganox 1010.

[0095] Light stabilizer:

[0096] Light stabilizer 2020 (bis(2,2,6,6-tetramethyl-4-piperidyl)-1,6-hexanediamine), purchased from BASF (China) Co., Ltd., with the trade name of Irganox 2020.

[0097] Color masterbatch: white color masterbatch, purchased from Henan Ruyin Chemical Product Co., Ltd., with the trade name of "special white color masterbatch".

[0098] Different raw material formulations are applied in the following examples of the present application, and the amount of raw materials is by weight unless otherwise specified, and each weight part represents 100 g.

[0099] The following preparation examples and comparative preparation examples are used to illustrate that the TPO functional masterbatch composition according to the present application is prepared according to the formulations in Table 1 and the following method.

[0100] Preparation Example 1

[0101] The mixture obtained by mixing each component in Formulation 1 is subjected to mixing treatment in an extruder, and then the material after the mixing treatment is subjected to granulation treatment to obtain the TPO functional masterbatch, which is named as TPO functional masterbatch L1.

[0102] The temperature for the granulation treatment is 180°C, and the screw rotation speed is 30 rpm.

[0103] The other preparation examples and comparative preparation examples are all carried out by using a method similar to that of Preparation Example 1, except that the formulations are different, and see Table 1 for details.

[0104] Table 1

[0105]

[0106] Table 1 (continued)

[0107]

[0108] Example 1

[0109] This example is used to illustrate the preparation of a TPO waterproofing membrane according to the formulation of the composition for TPO waterproofing membrane in Table 2, and according to the following method.

[0110] (1) The composition for TPO waterproofing membrane is subjected to contact stirring in a high-speed stirrer to obtain a mixture;

[0111] (2) The mixture is subjected to extrusion molding, and the material obtained by the extrusion molding is sequentially subjected to calendering, drawing and winding to obtain the TPO waterproofing membrane;

[0112] The temperature for contact stirring is 23°C, the rotation speed is 800 rpm, and the time is 30 min.

[0113] In the absence of a special indication, Examples 2-4 are all carried out according to the similar method of Example 1, except for the formulation and process parameters, which are shown in Table 2.

[0114] Table 2

[0115] Example 1 Example 2 Example 3 Example 4 TPO elastomer Type Elastomer I-1 Elastomer I-2 Elastomer I-3 Same as Example 1 Amount / weight parts 100 100 100 100 TPO functional masterbatch Type L1 L2 L3 L4 Amount / weight parts 22.2 12.5 33.3 5 Color masterbatch Amount / weight parts 2.2 2.5 2.2 2 Antioxidant Amount / weight parts 0.56 0.625 0.56 0.5 Light stabilizer Amount / weight parts 1.12 1.3 1.12 1.5 Extrusion molding Temperature / °C 180 160 190 210 Screw rotation speed / rpm 20 10 20 30 Linear speed / (m / min) 4 4 5 6

[0116] Example 5

[0117] This example is carried out according to the similar method of Example 1, except that this example uses equal weight parts of TPO functional masterbatch L5 to replace TPO functional masterbatch L1 in Example 1, and the rest is the same as Example 1, to prepare a TPO waterproofing membrane.

[0118] Comparative Example 1

[0119] This comparative example is carried out according to the similar method of Example 1, except that this comparative example uses equal weight parts of calcium carbonate to replace TPO functional masterbatch L1 in Example 1, and the rest is the same as Example 1, to prepare a TPO waterproofing membrane.

[0120] Comparative Example 2

[0121] This comparative example is carried out according to the similar method of Example 1, except that this comparative example uses equal weight parts of crosslinked polystyrene microspheres to replace TPO functional masterbatch L1 in Example 1, and the rest is the same as Example 1, to prepare a TPO waterproofing membrane.

[0122] Comparative Example 3

[0123] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D1 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0124] Comparative example 4

[0125] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D2 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0126] Comparative example 5

[0127] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D3 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0128] Comparative example 6

[0129] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D4 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0130] Comparative example 7

[0131] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D5 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0132] Comparative example 8

[0133] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D6 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0134] Comparative example 9

[0135] The comparative example was prepared by using the similar method of example 1, except that the comparative example used equal weight parts of TPO functional masterbatch L-D7 to replace TPO functional masterbatch L1 in example 1, and the rest was the same as example 1, to prepare a TPO waterproof roll material.

[0136] Test example

[0137] The properties of the TPO waterproofing membrane prepared in the above examples were tested according to the method specified in GB / T 27789-2011, and the results are shown in Table 3.

[0138] The mechanical property retention rate (tensile strength retention rate and elongation at break retention rate) and the weight loss 5wt% corresponding temperature T of the TPO waterproofing membrane after heat aging treatment (temperature 115℃, time 56 days) 5％ (Thermogravimetric analysis method, test atmosphere: air, temperature rising speed 10℃ / min, temperature range 25℃ to 600℃) represents the thermal stability of the TPO waterproofing membrane;

[0139] Tensile strength retention rate = tensile strength after heat aging / tensile strength without treatment * 100%;

[0140] Elongation at break retention rate = elongation at break after heat aging / elongation at break without treatment * 100%;

[0141] Longitudinal size change rate = longitudinal length after heat treatment / longitudinal length before heat aging * 100%.

[0142] Table 3

[0143]

[0144]

[0145] From the above results, it can be seen that the TPO functional master batch obtained by using the TPO functional master batch composition provided by the application has excellent application prospects in the field of TPO waterproofing membranes. The TPO waterproofing membrane prepared by using the TPO waterproofing membrane composition provided by the application has excellent thermal stability and a lower size change rate, and can also have good elongation at break, achieving a good balance in strength, toughness and stability.

[0146] The above describes the preferred embodiments of the application in detail, but the application is not limited thereto. Within the technical concept of the application, various simple modifications can be made to the technical solutions of the application, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be considered as disclosed by the application and fall within the protection scope of the application.

Claims

1. A composition for TPO functional masterbatch, characterized by, The composition contains TPO elastomer, first component, second component, metal salt, crosslinking agent, calcium stearate and stearic acid; The content of the first component is 10-20 parts by weight, the content of the second component is 1-5 parts by weight, the content of the metal salt is 2-8 parts by weight, the content of the crosslinking agent is 0.1-1.5 parts by weight, and the total content of the calcium stearate and the stearic acid is 0.5-3 parts by weight, relative to 100 parts by weight of the TPO elastomer; The first component is polyethylene and / or polypropylene, the melt index of the polyethylene is 0.1-2.5 g / 10 min under 190 ℃ and 2.16 kg load, and the melt index of the polypropylene is 1.5-3.5 g / 10 min under 230 ℃ and 2.16 kg load; The second component is selected from at least one of maleic anhydride, glycidyl methacrylate and hydroxyethyl methacrylate; The metal salt is selected from at least one of zinc acetate, zinc triflate and iron chloride; The mass ratio of the content of the calcium stearate to the content of the stearic acid is 1:0.16-6.

2. The composition of claim 1, wherein, The mass ratio of the content of the calcium stearate to the content of the stearic acid is 1:0.5-1.

5.

3. The composition according to claim 1 or 2, wherein, The melt mass flow rate of the TPO elastomer is 0.5-15 g / 10 min under 230 ℃ and 2.16 kg load; and / or the polyethylene is a high density polyethylene having a density of not less than 0.941 to 0.960 g / cm 3 and / or a linear low density polyethylene having a density of not more than 0.93 g / cm 3 and / or a linear low density polyethylene having a density of not more than 0.93 g / cm And / or, the crosslinking agent is selected from at least one of dicumyl peroxide, di-tert-butyl peroxide and dibenzoyl peroxide.

4. A method of preparing a TPO functional masterbatch, characterized by, The method comprises: Granulating the mixture to obtain the TPO functional masterbatch; The mixture is obtained by mixing the components in the composition of any one of claims 1-3.

5. The method of claim 4, wherein, The granulation conditions include: temperature is 170-220 ℃, and screw rotation speed is 15-45 rpm.

6. The TPO functional masterbatch prepared by the method of claim 4 or 5.

7. A composition for TPO waterproofing membrane, characterized by, The composition contains TPO elastomer, TPO functional masterbatch, color masterbatch, antioxidant and light stabilizer; The content of the TPO functional masterbatch is 5-40 parts by weight, the content of the color masterbatch is 1-6 parts by weight, the content of the antioxidant is 0.3-1 part by weight, and the content of the light stabilizer is 0.5-2 parts by weight, relative to 100 parts by weight of the TPO elastomer; The TPO functional masterbatch is the TPO functional masterbatch of claim 6.

8. A method of making a TPO waterproofing membrane characterized by, The method comprises: (1) contacting and stirring the components in the composition of claim 7 to obtain a mixture; (2) extruding the mixture to obtain the TPO waterproof roll material.

9. The method of claim 8, wherein, In step (1), the contacting and stirring conditions include: temperature is 20-35 ℃, rotation speed is 300-1000 rpm, and time is 20-40 min; And / or, in step (2), the extrusion conditions include: extruder temperature is 145-225 ℃, screw rotation speed is 10-40 rpm, and linear speed is 2-6 m / min.

10. The waterproof roll material prepared by the method of claim 8 or 9.

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