TPO (Thermoplastic Polyolefin) waterproof roll material meeting V-0-grade flame retardance and 8000-hour aging resistance and preparation method of TPO waterproof roll material

Abstract

The invention discloses a TPO waterproof roll material meeting V-0 grade flame retardance and 8000 h aging resistance and a preparation method of the TPO waterproof roll material. The TPO waterproof roll material comprises the following raw materials: 20-40 parts of thermoplastic resin; 20 to 40 parts of a POE elastomer; 20 to 40 parts of ethylene propylene diene monomer; 5-15 parts of rubber oil; 15 to 35 parts of a flame retardant; 5-20 parts of a filler; 1-5 parts of a lubricant; 0.5 to 5 parts of a cross-linking agent; 0.5 to 10 parts of an assistant cross-linking agent; and 0.5-2 parts of an antioxidant. The preparation method comprises the following steps: putting the thermoplastic resin, the POE elastomer, the ethylene propylene diene monomer, the rubber oil, the filler, the lubricant and the antioxidant into an internal mixer for internal mixing, and then feeding into a single-screw extruder for granulation to obtain an intermediate; and mixing the intermediate with a flame retardant, a cross-linking agent and an assistant cross-linking agent, and carrying out dynamic vulcanization extrusion granulation to obtain the TPO waterproof roll material meeting V-0 grade flame retardance and 8000 h aging resistance. The waterproof roll material is safe to store, easy to process, environment-friendly and recyclable.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, and in particular to a TPO waterproof roll material meeting V-0 flame retardancy and 8000h aging resistance and a preparation method thereof. Background Art

[0002] Waterproof materials play a very important role in the use of buildings, bridges and tunnels. While preventing rainwater, sewage and humid air from eroding buildings, they can also ensure the structural strength of the buildings, ensure safety in use and extend their service life.

[0003] Organic waterproof materials can be divided into waterproof coatings, asphalt-based waterproof roll materials and polymer-based waterproof roll materials (including EPDM rubber waterproof roll materials, polyvinyl chloride waterproof roll materials, chlorinated polyethylene waterproof roll materials, etc.) according to their form. However, they all have certain problems, such as organic solvent-based waterproof coatings are flammable and explosive and pollute the environment, asphalt-based waterproof roll materials have poor flexibility at low temperatures, and polyvinyl chloride waterproof roll materials are not heat-resistant and light-resistant.

[0004] TPO waterproof roll material is an environmentally friendly polymer waterproof material. Due to its excellent physical and mechanical properties, reliable installation and excellent performance proven by long-term use, TPO waterproof roll material has been widely recognized. TPO waterproof roll material does not contain chlorine and plasticizers, and no harmful volatiles are produced during the processing process, so it has long-term weather resistance and thermal stability, etc. However, TPO itself is not flame retardant, and it will produce dripping and smoke during the combustion process.

[0005] The flammability of TPO waterproof roll materials has seriously affected the promotion and use of TPO waterproof roll materials. Therefore, it is urgent to develop a TPO waterproof material that is safe to store, 8000h aging-resistant, meets the V-0 flame retardant standard, is easy to process, environmentally friendly, and recyclable. Summary of the invention

[0006] The object of the present invention is to provide a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance and a preparation method thereof.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance, the raw materials of which include the following components in parts by mass:

[0009] 20-40 parts of thermoplastic resin;

[0010] POE elastomer 20-40 parts;

[0011] 20-40 parts of EPDM rubber;

[0012] 5-15 parts of rubber oil;

[0013] 15-35 parts of flame retardant;

[0014] 5 to 20 parts of filler;

[0015] 1 to 5 parts of lubricant;

[0016] 0.5-5 parts of cross-linking agent;

[0017] 0.5 to 10 parts of auxiliary cross-linking agent;

[0018] 0.5 to 2 parts of antioxidant.

[0019] According to a further technical solution, the thermoplastic resin includes polypropylene and polyethylene, wherein the polypropylene accounts for 50-75% of the thermoplastic resin and the polyethylene accounts for 25-75% of the thermoplastic resin, the melt indexes of the polyethylene and the polypropylene are both 0.5-35.0 g / 10 min, and the polypropylene is a copolymer of ethylene and propylene.

[0020] According to a further technical solution, the POE elastomer is a thermoplastic elastomer obtained by in-situ polymerization of ethylene and octene using a metallocene catalyst.

[0021] A further technical solution is that the main monomers of the EPDM rubber are ethylene and propylene, and the third monomer, i.e. the cross-linking monomer, is ethylidene norbornene; the Mooney viscosity ML (1+4) of the EPDM rubber is 40 to 70 at 125°C, the ethylene content is 50 to 70%, and the cross-linking monomer content is 2 to 5%.

[0022] In a further technical solution, the rubber oil is any one of white oil, paraffin oil, and naphthenic oil or a combination thereof; the kinematic viscosity of the rubber oil at 40°C is 40 to 400 mm 2 / s, evaporation loss is less than or equal to 0.6%.

[0023] In a further technical solution, the flame retardant is one or a combination of magnesium hydroxide, aluminum hydroxide, zinc oxide, decabromobiphenyl, and antimony trioxide.

[0024] According to a further technical solution, the filler is any one of talcum powder, titanium dioxide, ultrafine calcium carbonate and kaolin.

[0025] According to a further technical solution, the lubricant is one or a combination of silicone, silicone oil, erucamide, stearate, PE wax and paraffin.

[0026] In a further technical solution, the cross-linking agent is an organic peroxide, and the organic peroxide is any one of 2,5-bis(tert-butylperoxide)-2,5-dimethyl-3-hexyne, 2,5-bis(tert-butylperoxide)-2,5-dimethylhexane, diisopropyl benzene peroxide, tert-butyl peroxyisopropyl carbonate, tert-butyl isopropyl benzene peroxide, and di-(tert-butyl peroxyisopropyl) benzene.

[0027] In a further technical solution, the auxiliary cross-linking agent is one or a combination of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, ethylene glycol triacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, zinc diacrylate, zinc dimethacrylate, triallyl cyanurate, triallyl isocyanurate, NN-bismaleimide, and 1,2-polybutadiene.

[0028] In a further technical solution, the antioxidant is any one of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexanediamine, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 4,4'-bis(α,α-dimethylbenzyl)diphenylamine, and 3,5-di-tert-butyl-4-hydroxybenzoic acid hexadecyl.

[0029] Furthermore, the present invention also discloses a method for preparing a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance, comprising:

[0030] Step 1: Preparation of intermediates:

[0031] Thermoplastic resin, POE elastomer, EPDM rubber, rubber oil, filler, lubricant and antioxidant are mixed according to mass fractions and put into an internal mixer at a mixing temperature of 170 to 195° C. for 15 to 30 minutes; after the EPDM rubber and the thermoplastic resin are uniformly blended, they are sent into a single screw extruder with a set temperature equal to the internal mixing temperature for granulation, thereby obtaining an uncrosslinked thermoplastic elastomer intermediate;

[0032] Step 2: Cross-linking reaction:

[0033] The thermoplastic elastomer intermediate obtained in step 1 is mixed with a flame retardant, a cross-linking agent and a co-cross-linking agent prepared in parts by mass, and extruded and granulated on a twin-screw extruder using a dynamic vulcanization process. The vulcanization temperature is 170 to 230° C. and the rotation speed is 200 to 500 rpm to obtain a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance.

[0034] In the above scheme, the dynamic vulcanization process is a prior art and is well known to those skilled in the art. Since it is not the invention point of this case, it will not be described in detail in this case.

[0035] In a further technical solution, the weight percentage of the thermoplastic resin is 10-30%.

[0036] The weight percentage of the POE elastomer is 10-30%,

[0037] The weight percentage of the EPDM rubber is 10-30%,

[0038] The rubber oil accounts for 5-15% by weight.

[0039] The weight percentage of the flame retardant is 5-25%,

[0040] The weight percentage of the filler is 5-20%,

[0041] The weight percentage of the antioxidant is 0.1-2%.

[0042] The weight percentage of the cross-linking agent is 1-5%,

[0043] The weight content of the auxiliary cross-linking agent is 1-5%.

[0044] The weight percentage of the lubricant is 1-5%.

[0045] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0046] The terms used herein generally have the ordinary meanings of each term used in the art, in the context of the present invention, and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of the present invention.

[0047] The present invention provides a TPO waterproof roll material which is safe to store, resistant to aging, meets the V-0 level in the UL94 flame retardant level, is easy to process and environmentally friendly, and is resistant to aging for 8000 hours.

[0048] Compared with the prior art, the beneficial effects of the present invention include:

[0049] (1) The present invention uses polypropylene, POE elastomer and ethylene propylene rubber as the base material and adopts dynamic vulcanization to prepare TPO waterproof roll material, which has excellent aging resistance, low temperature flexibility and environmental protection performance, and can effectively solve the problems of low elongation, easy leakage and poor aging performance of traditional waterproof roll materials.

[0050] (2) The present invention has excellent aging resistance, meets V-0 flame retardancy, and has high tensile strength, good wear resistance, strong UV resistance, smooth surface, high reflectivity, and pollution resistance. It can replace traditional waterproof materials in various fields and has a huge driving effect on the development of environmental protection and building energy conservation.

[0051] (3) The present invention adopts a dynamic vulcanization process, assisted by anti-ultraviolet, antioxidant, light shielding agent and other additives, and has the advantages of being environmentally friendly and pollution-free, highly recyclable and reusable, and having high seam peeling strength. DETAILED DESCRIPTION

[0052] The present invention will be further described below in conjunction with embodiments:

[0053] The present invention will be described in detail below. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0054] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0055] A method for preparing a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance, specifically comprising the following steps:

[0056] Step 1: Thermoplastic resin, rubber, filler, rubber oil, lubricant and antioxidant are mixed in parts by weight and put into an internal mixer at a mixing temperature of 170° C. to 195° C. for 15 to 30 minutes, so that the rubber is evenly distributed as a dispersed phase in the thermoplastic resin continuous phase, that is, the rubber and the thermoplastic resin are fully blended and evenly distributed and sent to a single-screw extruder with the same set temperature for granulation, thereby obtaining an uncrosslinked thermoplastic elastomer intermediate;

[0057] Step 2: The thermoplastic elastomer intermediate prepared in step 1 is mixed with the flame retardant, cross-linking agent and co-cross-linking agent prepared by weight, and extruded and granulated on a twin-screw extruder by a dynamic vulcanization process, with a vulcanization temperature of 170-230°C and a rotation speed of 200-500 rpm. The dynamic vulcanization process is that the unvulcanized raw rubber in the thermoplastic elastomer intermediate and the thermoplastic resin that cannot be vulcanized are melt-blended in a high-temperature, high-shear twin-screw. At the same time, under the action of the cross-linking agent, the rubber completely undergoes a cross-linking reaction and is broken into micron-sized vulcanized rubber particles, which are evenly dispersed in the resin phase, and this structure is very stable, which greatly improves the performance of the elastomer. The flame retardant is evenly distributed in the thermoplastic elastomer under the action of high shear force, which improves the flame retardant properties of the elastomer, and finally obtains a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance.

[0058] The following Examples 1 to 6 and Comparative Examples 1 and 2 all adopt the above-mentioned preparation method, except that the proportions of the raw materials are different.

[0059] Embodiment 1:

[0060] 30 parts of thermoplastic resin, 20 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 16 parts of filler, 1.5 parts of lubricant and 1 part of antioxidant were added to an internal mixer and mixed for 20 minutes at a mixing temperature of 190°C. The mixture was then added to a single-screw extruder to form intermediate particles. The prepared intermediate particles, 15 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid were mixed evenly in a mixer and added to a twin-screw extruder. The extruder temperature was 120°C to 200°C and the speed was 280 to 400 rpm. The finished particles were extruded to obtain TPO waterproof roll materials that met V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0061] Embodiment 2:

[0062] 30 parts of thermoplastic resin, 20 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 12 parts of filler, 1.5 parts of lubricant and 1 part of antioxidant were added to an internal mixer and mixed for 20 minutes at a mixing temperature of 190°C. The mixture was then added to a single-screw extruder to form intermediate particles. The prepared intermediate particles, 25 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid were mixed evenly in a mixer and added to a twin-screw extruder. The extruder temperature was 120°C to 200°C and the speed was 280 to 400 rpm. The finished particles were extruded to obtain TPO waterproof roll materials that met V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0063] Embodiment 3:

[0064] 30 parts of thermoplastic resin, 20 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 8 parts of filler, 1.5 parts of lubricant and 1 part of antioxidant were added to an internal mixer and mixed for 20 minutes at a mixing temperature of 190°C. The mixture was then added to a single-screw extruder to form intermediate particles. The prepared intermediate particles, 35 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid were mixed evenly in a mixer and added to a twin-screw extruder. The extruder temperature was 120°C to 200°C and the speed was 280 to 400 rpm. The finished particles were extruded to obtain TPO waterproof roll materials that met V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0065] Embodiment 4:

[0066] 20 parts of thermoplastic resin, 30 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 16 parts of filler, 2 parts of lubricant and 1.2 parts of antioxidant were added to an internal mixer and mixed for 20 minutes at a mixing temperature of 190°C. The mixture was then added to a single-screw extruder to form intermediate particles. The prepared intermediate particles, 15 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid were mixed evenly in a mixer and added to a twin-screw extruder. The extruder temperature was 120°C to 200°C and the speed was 280 to 400 rpm. The finished particles were extruded to obtain TPO waterproof roll materials that met V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0067] Embodiment 5:

[0068] 20 parts of thermoplastic resin, 30 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 12 parts of filler, 2 parts of lubricant and 1.2 parts of antioxidant were added to an internal mixer and mixed for 20 minutes at a mixing temperature of 190°C. The mixture was then added to a single-screw extruder to form intermediate particles. The prepared intermediate particles, 25 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid were uniformly mixed in a mixer and added to a twin-screw extruder. The extruder temperature was 120°C to 200°C and the speed was 280 to 400 rpm. The finished particles were extruded to obtain TPO waterproof roll materials that met V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0069] Embodiment 6:

[0070] 20 parts of thermoplastic resin, 30 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 8 parts of filler, 2 parts of lubricant and 3 parts of antioxidant were added to an internal mixer and mixed for 20 minutes at a mixing temperature of 190°C. The mixture was then added to a single-screw extruder to form intermediate particles. The prepared intermediate particles, 35 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid were uniformly mixed in a mixer and added to a twin-screw extruder. The extruder temperature was 120°C to 200°C and the speed was 280 to 400 rpm. The finished particles were extruded to obtain TPO waterproof roll materials that met V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0071] Comparative Example 1:

[0072] No POE elastomer is added. Specifically, 30 parts of thermoplastic resin, 0 parts of POE elastomer, 30 parts of EPDM rubber, 7 parts of rubber oil, 8 parts of filler, 1.5 parts of lubricant and 0.6 parts of antioxidant are added to an internal mixer, and the internal mixing is carried out for 20 minutes at a temperature of 190°C. The mixture is then added to a single screw extruder to form intermediate particles. The intermediate particles, 25 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid are uniformly mixed in a mixer and added to a twin-screw extruder. The extruder temperature is 120°C to 200°C, the speed is 280 to 400 rpm, and the finished particles are extruded to obtain TPO waterproof roll materials that meet V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0073] Comparative Example 2:

[0074] No flame retardant is added. Specifically, 20 parts of thermoplastic resin, 30 parts of EPDM rubber, 6 parts of rubber oil, 30 parts of POE elastomer, 20 parts of filler, 2 parts of lubricant and 1 part of antioxidant are added to an internal mixer, and the internal mixing is carried out for 20 minutes at a temperature of 190°C. The mixture is then added to a single screw extruder to form intermediate particles. The intermediate particles, 0 parts of flame retardant, 1 part of cross-linking agent and 3 parts of cross-linking aid are uniformly mixed in a mixer and added to a twin-screw extruder. The extruder temperature is 120°C to 200°C, the speed is 280 to 400 rpm, and the finished particles are extruded to obtain TPO waterproof roll materials that meet V-0 flame retardancy and 8000h aging resistance. The sample performance test results are shown in Table 2.

[0075] The specific components of Examples 1 to 6 and Comparative Examples 1 and 2 are shown in Table 1 below:

[0076] Table 1: Raw material formula of TPO waterproof roll materials of Comparative Examples 1 to 2 and Examples 1 to 6 (unit: parts by weight)

[0077] raw material Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Thermoplastic resin 30 20 30 30 30 20 20 20 POE elastomer 0 30 20 20 20 30 30 30 rubber 30 30 30 30 30 30 30 30 Rubber Oil 7 7 7 7 7 7 7 7 Flame retardants 25 0 15 25 35 15 25 35 filler 8 16 16 12 8 16 12 8 Lubricants 1.5 2 1.5 1.5 1.5 2 2 2 Crosslinking agent 1 1 1 1 1 1 1 1 Crosslinking agent 3 3 3 3 3 3 3 3 Antioxidants 0.6 1 1 1 1 1.2 1.2 1.2

[0078] Among them, the selection of each raw material in the above-mentioned comparative examples 1 to 2 and embodiments 1 to 6 is as follows:

[0079] Thermoplastic resin: The thermoplastic resin is PP K8003 of Shanghai Xinyou International Trade Co., Ltd., PP S1003 of Shanghai Xinyou International Trade Co., Ltd.

[0080] POE elastomer: the POE elastomer is ExxonMobil's POE resin VM3000 and ExxonMobil's POE resin 6102;

[0081] Rubber: The rubber is EPDM: EPDM J-3080P of Jilin Chemical;

[0082] Rubber oil: the rubber oil is white oil 4010;

[0083] Flame retardant: The flame retardant is a combination of antimony trioxide and decabromobiphenyl in a ratio of 1:2;

[0084] Filler: The filler is nano calcium carbonate;

[0085] Lubricant: The lubricant is a combination of paraffin wax and silicone; the ratio is 2:1;

[0086] Cross-linking agent: The cross-linking agent is 2,5-bis(tert-butylperoxy)-2,5-dimethyl-3-hexyne;

[0087] Cross-linking agent: The cross-linking agent is NN-bismaleimide;

[0088] Antioxidant: the antioxidant 3450 and the antioxidant 2908 are combined in a ratio of 1:1;

[0089] Screw temperature setting: The temperatures of the first two zones are 100℃ and 120℃ respectively, and the temperature of the rear zone is set between 160 and 200℃.

[0090] Table 2: Performance test results of TPO waterproof roll materials meeting V-0 flame retardancy and 8000h aging resistance prepared in Comparative Examples 1 to 2 and Examples 1 to 6

[0091]

[0092] As can be seen from Table 2, since no POE elastomer is added to Comparative Example 1, the mechanical properties and aging resistance of the sample in Comparative Example 1 are poor, and the mechanical properties of the TPO waterproof roll material, namely, tensile strength ≥ 12MPa, tear strength ≥ 60KN / m, elongation ≥ 500%, cannot be met. The use requirements and 8000h aging resistance cannot be met. As the proportion of POE elastomer increases, the mechanical strength and aging resistance of Examples 1 to 6 are enhanced, which shows that the role of adding POE elastomer is to improve the mechanical properties and aging resistance of the material.

[0093] Since no flame retardant is added to Comparative Example 2, the sample of Comparative Example 2 does not have flame retardant properties and cannot meet the V-0 flame retardant grade of TPO waterproof roll materials. As the proportion of flame retardant increases, the flame retardant properties of Examples 1 to 6 are enhanced. This shows that the role of adding flame retardants is to improve the flame retardant properties of materials.

[0094] From the performance test results of Examples 1 to 6, it can be seen that with the increase of flame retardant, the higher the flame retardant level of the sample, the addition of a large amount of flame retardant makes the aging resistance of the TPO waterproof roll material worse, affects the stability between the molecular chains, and the strength of the TPO waterproof roll material worse; as the proportion of POE elastomer increases, the mechanical properties and aging resistance of the material are improved, and the elongation gradually increases with the increase of this proportion; on the premise of meeting the V-0 flame retardant level and 8000h aging resistance, Example 5 has the most excellent comprehensive performance, while meeting the national standards and customer requirements.

[0095] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance, characterized by: The raw materials include the following components by mass: Thermoplastic resin 20-40 parts; POE elastomer 20~40 parts; 20~40 parts of EPDM rubber; 5-15 parts of rubber oil; Flame retardant 15~35 parts; 5~20 parts of filler; 1~5 parts of lubricant; 0.5~5 parts of cross-linking agent; 0.5~10 parts of auxiliary cross-linking agent; Antioxidant 0.5~2 parts.

2. According to claim 1, a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance, characterized in that: The thermoplastic resin includes polypropylene and polyethylene, the polypropylene accounts for 50-75% of the thermoplastic resin, the polyethylene accounts for 25-75% of the thermoplastic resin, the melt index of the polyethylene and the polypropylene are both 0.5-35.0 g / 10 min, and the polypropylene is a copolymer of ethylene and propylene.

3. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The POE elastomer is a thermoplastic elastomer obtained by in-situ polymerization of ethylene and octene using a metallocene catalyst.

4. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The main monomers of the EPDM rubber are ethylene and propylene, and the third monomer, i.e. the cross-linking monomer, is ethylidene norbornene; The Mooney viscosity ML (1+4) of the EPDM rubber at 125° C. is 40-70, the ethylene content is 50-70%, and the cross-linking monomer content is 2-5%.

5. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The rubber oil is any one or a combination of white oil, paraffin oil and naphthenic oil; The kinematic viscosity of the rubber oil at 40°C is 40-400 mm 2 / s, evaporation loss is less than or equal to 0.6%.

6. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The flame retardant is one or a combination of magnesium hydroxide, aluminum hydroxide, zinc oxide, decabromobiphenyl, and antimony trioxide.

7. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The filler is any one of talcum powder, titanium dioxide, ultrafine calcium carbonate and kaolin.

8. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The lubricant is one or a combination of silicone, silicone oil, erucamide, stearate, PE wax and paraffin.

9. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The cross-linking agent is an organic peroxide, and the organic peroxide is any one of 2,5-bis(tert-butylperoxide)-2,5-dimethyl-3-hexyne, 2,5-bis(tert-butylperoxide)-2,5-dimethylhexane, diisopropyl benzene peroxide, tert-butyl peroxyisopropyl carbonate, tert-butyl isopropyl benzene peroxide, and di-(tert-butyl peroxyisopropyl) benzene.

10. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The auxiliary cross-linking agent is one or a combination of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, ethylene glycol triacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, zinc diacrylate, zinc dimethacrylate, triallyl cyanurate, triallyl isocyanurate, NN-bismaleimide, and 1,2-polybutadiene.

11. The TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 1, characterized in that: The antioxidant is any one of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, N,N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexanediamine, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 4,4'-bis(α,α-dimethylbenzyl)diphenylamine, and 3,5-di-tert-butyl-4-hydroxybenzoic acid hexadecyl ester.

12. A method for preparing a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance, characterized in that: A TPO waterproof roll material for preparing any one of claims 1 to 11 that meets V-0 flame retardancy and 8000h aging resistance, the preparation method comprising: Step 1: Preparation of intermediates: Thermoplastic resin, POE elastomer, EPDM rubber, rubber oil, filler, lubricant and antioxidant are mixed according to mass fractions and put into an internal mixer at a mixing temperature of 170-195° C. for 15-30 min. After the EPDM rubber and the thermoplastic resin are uniformly blended, they are sent into a single screw extruder with a set temperature equal to the internal mixing temperature for granulation, thereby obtaining an uncrosslinked thermoplastic elastomer intermediate. Step 2: Cross-linking reaction: The thermoplastic elastomer intermediate obtained in step 1 is mixed with a flame retardant, a cross-linking agent and a co-cross-linking agent prepared in parts by mass, and extruded and granulated on a twin-screw extruder using a dynamic vulcanization process. The vulcanization temperature is 170-230° C. and the rotation speed is 200-500 rpm to obtain a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance.

13. The method for preparing a TPO waterproof roll material that meets V-0 flame retardancy and 8000h aging resistance according to claim 12, characterized in that: The weight percentage of the thermoplastic resin is 10-30%, The weight percentage of the POE elastomer is 10-30%, The weight percentage of the EPDM rubber is 10-30%. The rubber oil accounts for 5-15% by weight. The weight percentage of the flame retardant is 5-25%, The weight percentage of the filler is 5-20%, The weight percentage of the antioxidant is 0.1-2%. The weight percentage of the cross-linking agent is 1-5%. The weight content of the auxiliary cross-linking agent is 1-5%. The weight percentage of the lubricant is 1-5%.

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