Fluorosilicified acrylic acid modified chlorinated polyolefin and preparation method thereof

Abstract

The present invention aims to provide a fluorinated silicified acrylic acid modified chlorinated polyolefin, comprising the following raw materials in parts by weight: 60-100 parts of chlorinated polyolefin, 10-20 parts of acrylic monomer, 2-5 parts of polyether macromonomer, 3-6 parts of fluorinated monomer, 5-10 parts of siliconized monomer, 2-5 parts of styrene, 0.2-0.4 parts of polyethylene glycol diacrylate, 7-10 parts of epoxy diluent, 0.5-2 parts of initiator, 0.1-1 parts of catalyst, and organic solvent, the amount of organic solvent is to make the solid content of the fluorinated silicified acrylic acid modified chlorinated polyolefin solution 25-40%. The present invention uses chlorinated polyolefin as a base material, and through grafting modification, a polymer chain rich in functional groups is grafted on the chlorinated polyolefin, which has strong adhesion to the primer, good weather resistance, and plays an efficient anti-corrosion and anti-fouling function. It can resist acid and alkali, salt spray, seawater, and the comprehensive anti-corrosion performance of China.

Description

Technical Field

[0001] The invention belongs to the technical field of marine antifouling and anticorrosion, and specifically relates to a fluorinated siliconized acrylic acid modified chlorinated polyolefin and a preparation method thereof. Background Art

[0002] Chlorinated polyolefin molecules contain a large number of chlorine atoms, and the C-Cl bonds formed by chlorinated polyolefins and carbon atoms have high polarity and chemical inertness. This structure gives chlorinated polyolefins excellent water resistance, corrosion resistance, ozone resistance, weather resistance and chemical resistance. Therefore, chlorinated polyolefin coatings have excellent adhesion and excellent corrosion resistance to water, seawater, salt water, chemical atmosphere, acid, alkali, salt, etc. Coatings prepared with chlorinated polyolefins are widely used in metal protection, road marking, chemical plant steel structures, concrete structures and offshore oil platforms. However, chlorinated polyolefins have poor flexibility, poor impact resistance, poor light aging resistance and poor anti-fouling performance, which limits their use in marine ships, port buildings, marine tunnels, cross-sea bridges and other fields, and need to be grafted and modified.

[0003] At present, most of them adopt physical mixing method to add some soft resins such as commonly used alkyd resin, acrylic resin, etc., or add plasticizers such as chlorinated paraffin, dibutyl phthalate, etc. for toughening modification. For example, the published Chinese patent "An acrylic modified chlorinated polyolefin coating and its preparation method" (CN 101289588 B) improves the light aging resistance of the coating by physically blending and adding a certain amount of acrylic resin into the chlorinated polyolefin coating, wherein chlorinated paraffin is used as a plasticizer of the coating; the published Chinese patents "A methacrylate dicyclopentenyl ester modified chlorinated polyolefin resin coating and its preparation method" (CN 101760060 A) and "Acrylic modified chlorinated polyolefin water-based coating suitable for marine environment and its preparation method" (CN 107245293 B) also adopt physical mixing to improve the coating performance; the Chinese patent "Graft modified chlorinated polyolefin and its anti-corrosion coating" (CN 101348547 B). Compared with chemical modification, physical blending simplifies the preparation process and does not require chemical reaction preparation, but the affinity between different resins may be insufficient. Through physical external forces, such as high-speed stirring or twin-screw extrusion, the compatibility of materials with each other meets the requirements at the initial stage of use. However, with the extension of use time, or under some extreme conditions, the physical blending system is prone to unstable phenomena such as phase separation, resulting in poor stability of the coating.

[0004] "An acrylic acid-modified chlorinated polypropylene resin for polyolefin substrate and its preparation method" (CN 109280133B) uses a chemical graft copolymerization method to prepare acrylic acid-modified chlorinated polyolefin resin, which improves the flexibility and light aging resistance of the coating film, but the coating film prepared by it does not have a long-term antifouling function in the marine environment.

[0005] Therefore, it is necessary to research and develop a coating with good flexibility, excellent impact resistance, excellent adhesion, excellent salt spray resistance, and good light aging resistance, which can effectively combine the advantages of stable fluorosilicone structure and low surface energy, so that the surface performance of acrylic modified chlorinated polyolefin coating can be further improved. At the same time, according to the concept of multi-scale bionics and multi-factor synergistic anti-fouling, the structure-activity relationship between material surface chemistry-surface microstructure-surface physicochemical parameters-anti-biological adhesion performance is established, and a new composite marine fouling solution combining ultra-low biosorption surface with highly active anti-fouling compounds is used to prevent marine biological attachment in the early stage, make it difficult for attached marine organisms to survive and easy to fall off in the later stage, and meet the needs of marine anti-fouling and anti-corrosion, which is of great significance. Summary of the invention

[0006] In view of this, the present invention proposes a method for preparing fluorinated siliconized acrylic modified chlorinated polyolefin, aiming to solve the problems of existing chlorinated polyolefin coatings and anti-corrosion paints, such as poor flexibility, poor light aging resistance, insufficient salt spray resistance, and poor antifouling performance.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A fluorinated siliconized acrylic acid modified chlorinated polyolefin comprises the following raw materials in parts by weight: 60-100 parts of chlorinated polyolefin, 10-20 parts of acrylic monomer, 2-5 parts of polyether macromonomer, 3-6 parts of fluorinated monomer, 5-10 parts of siliconized monomer, 2-5 parts of styrene, 0.2-0.4 parts of polyethylene glycol diacrylate, 7-10 parts of epoxy diluent, 0.5-2 parts of initiator, 0.1-1 parts of catalyst and organic solvent, wherein the amount of organic solvent is such that the solid content of the solution of the fluorinated siliconized acrylic acid modified chlorinated polyolefin is 25-40%.

[0009] Furthermore, the chlorinated polyolefin is selected from chlorinated rubber, chlorinated polyethylene, chlorinated polypropylene, and has a chlorine content of 50-70wt%, preferably 60-65wt%, such as 62wt%, 63wt%, 64wt%, 65wt%.

[0010] Furthermore, the acrylic monomer is selected from at least one of acrylic acid, alkyl (meth)acrylate, hydroxyl-containing acrylate, and mercapto-containing acrylate; preferably, the alkyl (meth)acrylate is selected from at least one of methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and butyl (meth)acrylate; the hydroxyl-containing acrylate is selected from at least one of hydroxyethyl (meth)acrylate and hydroxypropyl (meth)acrylate; and the mercapto-containing acrylate is selected from trihydroxymethylpropane tris(3-mercaptoacrylate).

[0011] More preferably, the acrylic monomer is a mixture of acrylic acid, (meth) alkyl acrylate, and hydroxyl acrylate in a mass ratio of 1-2: 7-10: 3-5. In the acrylic mixed monomers in the above ratio, each monomer can play its own role and cooperate with each other, thereby jointly promoting the excellent comprehensive performance of the modified chlorinated polyolefin coating.

[0012] Further, the polyether macromonomer is selected from at least one of methoxy polyethylene glycol monomethacrylate, 4-hydroxybutyl vinyl ether polyoxyethylene ether, and mercapto polyethylene glycol acrylate. The number average molecular weight of the polyether macromonomer is 2000-3000 g / mol. Mercapto polyethylene glycol acrylate is preferred. The inventors have found that mercapto polyethylene glycol acrylate with a mercapto group at the end of the polyether as a monomer can significantly increase the adhesion to the epoxy primer in addition to the polyether segment being able to improve the toughness of the system.

[0013] Furthermore, the molecular weight of the polyethylene glycol diacrylate is 1000-2000 g / mol.

[0014] Furthermore, the fluorinated monomer is selected from at least one of hexafluorobutyl methacrylate, trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, hexafluorocarbon butyl acrylate, and hexafluoroisopropyl methacrylate; the siliconized monomer is selected from at least one of vinyltriethoxysilane, vinyltrimethoxysilane, methacryloxypropyltrimethoxysilane, and methacryloxypropyltriethoxysilane. The present invention can conveniently regulate the various properties of the obtained resin system by adding fluorinated monomers and siliconized monomers and controlling the ratio of the two, so that the resin system has good adhesion to the substrate, and its own weather resistance, stability, and comprehensive performance of antifouling and anticorrosion properties are optimized.

[0015] Furthermore, the initiator is an azo or peroxide initiator, the azo initiator is selected from at least one of azobisisobutyronitrile and azobisisoheptanenitrile; the peroxide initiator is selected from at least one of benzoyl peroxide, di-tert-amyl peroxide, and tert-butyl perbenzoate.

[0016] Furthermore, the catalyst is selected from one or more of triphenylphosphine, dibutyltin dilaurate, zinc oxide, boron trifluoride ethyl ether, N,N-dimethylbenzylamine, dimethylethanolamine, and triethylamine. The role of the catalyst is to react the epoxy group and hydroxyl / carboxyl group in the system, so that the toughness of the system is further improved, and the adhesion to the substrate is enhanced.

[0017] The organic solvent is not particularly limited as long as it can fully dissolve the material, including but not limited to one or more of benzene, toluene, xylene, ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, methyl isobutyl ketone, cyclohexanone, butanone, butanol, propylene glycol methyl ether, and ethylene glycol butyl ether.

[0018] The epoxy diluent is selected from at least one of tert-butyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether and benzyl glycidyl ether.

[0019] Preferably, the raw material of the fluorinated siliconized acrylic acid modified chlorinated polyolefin further comprises 1-2 parts of a chain transfer agent, and the chain transfer agent is selected from at least one of isooctyl thioglycolate, mercaptoethanol, and dodecanethiol. The presence of the chain transfer agent makes the molecular weight of the polymer grafted on the chlorinated polyolefin more uniform, and the performance of the fluorinated siliconized acrylic acid modified chlorinated polyolefin of the present invention is more stable.

[0020] The present invention also provides a method for preparing the fluorinated siliconized acrylic acid modified chlorinated polyolefin, comprising the following steps:

[0021] (S1) Weighing acrylic monomers, polyether macromonomers, fluorinated monomers, siliconized monomers, styrene, polyethylene glycol diacrylate and 40-70% of an initiator by weight, preferably, a chain transfer agent, and stirring until uniform after the materials are added to obtain a fluorinated siliconized acrylic monomer drop solution;

[0022] (S2) weighing chlorinated polyolefin by weight, adding an organic solvent, heating to 80-120° C. under reflux, and when the chlorinated polyolefin is completely dissolved, adding the fluorosilicified acrylic monomer dropwise solution and polyethylene glycol diacrylate obtained in step (S1), after the dropwise addition is completed, adding the remaining initiator, keeping the temperature at 80-120° C. for 3-5 hours, then cooling to 50-70° C., adding an organic solvent, stirring evenly, adding a catalyst, keeping the temperature at 50-70° C. for reaction for 3-5 hours, and finally adding an epoxy diluent and an organic solvent to obtain a solution of fluorosilicified acrylic modified chlorinated polyolefin.

[0023] Furthermore, in step (S2), the fluorosilicified acrylic acid monomer dropwise solution is slowly added dropwise and the addition is completed within 1-2 hours; the remaining initiator is added in batches, divided into 2-4 batches, and the time interval between each batch is 10-15 minutes.

[0024] Furthermore, the solid content of the obtained fluorinated siliconized acrylic acid modified chlorinated polyolefin solution is 25-40%.

[0025] Compared with the prior art, the present invention has achieved the following technical advantages:

[0026] 1. The present invention uses chlorinated polyolefin as the base material, and grafts a polymer chain with rich functional groups on the chlorinated polyolefin through grafting modification, which has strong adhesion to the primer, good weather resistance, and plays a highly effective anti-corrosion and anti-fouling function. It can resist acid and alkali, salt spray, seawater, and China's comprehensive anti-corrosion performance.

[0027] 2. The modified chlorinated polyolefin of the present invention has good affinity for epoxy primer and high adhesion, and can play a long-term and stable anti-corrosion function in marine operations.

[0028] 3. The fluorinated siliconized acrylic acid modified chlorinated polyolefin solution obtained by the present invention dries quickly and can be attached to a substrate, such as the surface of an epoxy primer, by conventional operation methods such as spraying, brushing, and dipping to achieve an anti-corrosion effect. DETAILED DESCRIPTION

[0029] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention rather than limiting the patent claims of the present invention.

[0030] Example 1

[0031] (S1) Weigh acrylic monomers (1 part acrylic acid, 2 parts methyl methacrylate, 5 parts butyl acrylate and 3 parts hydroxyethyl acrylate), 2 parts mercapto polyethylene glycol acrylate (number average molecular weight 2200 g / mol), 5 parts hexafluorobutyl methacrylate, 10 parts vinyltrimethoxysilane, 2 parts styrene, 0.2 parts polyethylene glycol diacrylate (number average molecular weight 1700 g / mol) by weight, mix well, add 1 part benzoyl peroxide, and stir until a transparent and uniform liquid is obtained to obtain a fluorosilicified acrylic monomer drop solution.

[0032] (S2) 60 parts of chlorinated polyethylene (chlorine content 65%, viscosity of 20% xylene solution at 25°C is 26mPa.s) and 100 parts of xylene are weighed by weight and added to a reaction container, and heated to 95°C under reflux stirring. When the chlorinated polyethylene is completely dissolved, keep it at 95°C for 20 minutes. After the temperature stabilizes, start to drop the fluorinated silicified acrylic acid monomer drop solution obtained in step (S1), and the drop addition is completed in 2 hours. 1 part of di-tert-butyl peroxide is added in 2 batches, with an interval of 15 minutes between each batch, and keep it at 110°C for 3 hours, then cool to 80°C, add 10 parts of tert-butyl carbonate and a certain amount of xylene, stir evenly, add 1 part of boron trifluoride etherate, and keep it at 80°C for 3 hours. That is, a solution of fluorinated silicified acrylic acid modified chlorinated polyethylene is obtained, with a solid content of 32.8%.

[0033] Example 2

[0034] (S1) Weigh acrylic monomers (2 parts of acrylic acid, 4 parts of methyl methacrylate, 6 parts of butyl acrylate and 5 parts of hydroxypropyl acrylate), 5 parts of mercapto polyethylene glycol acrylate (number average molecular weight 2200 g / mol), 6 parts of hexafluorobutyl methacrylate, 7 parts of vinyltrimethoxysilane, 4 parts of styrene, 0.3 parts of polyethylene glycol diacrylate (number average molecular weight 1700 g / mol) by weight, mix well, add 1 part of benzoyl peroxide, and stir until a transparent and uniform liquid is obtained to obtain a fluorosilicified acrylic monomer drop solution.

[0035] (S2) 60 parts of chlorinated polyethylene (chlorine content 65%, viscosity of 20% xylene solution at 25°C is 26mPa.s) and 100 parts of xylene are weighed by weight and added to a reaction container, and heated to 90°C under reflux stirring. When the chlorinated polyethylene is completely dissolved, keep it at 90°C for 30 minutes. After the temperature stabilizes, start to drop the fluorinated silicified acrylic acid monomer drop solution obtained in step (S1), and the dropwise addition is completed in 2 hours. 1 part of benzoyl peroxide is added in 2 batches, with an interval of 15 minutes between each batch, and keep it at 115°C for 3 hours, then cool to 90°C, add 7 parts of butyl glycidyl ether and a certain amount of xylene, stir evenly, add 0.3 parts of dibutyltin dilaurate, and keep it at 70°C for 4 hours. That is, a fluorinated silicified acrylic acid modified chlorinated polyethylene solution with a solid content of 35.1% is obtained.

[0036] Example 3

[0037] Other conditions and operations are the same as those in Example 1, except that in step (S1), mercapto polyethylene glycol acrylate is replaced by an equal mass of methoxy polyethylene glycol monomethacrylate (number average molecular weight 2600 g / mol).

[0038] Example 4

[0039] Other conditions and operations are the same as those in Example 1, except that in step (S1), mercapto polyethylene glycol acrylate is replaced by an equal mass of 4-hydroxybutyl vinyl ether polyoxyethylene ether (data molecular weight 3000 g / mol).

[0040] Example 5

[0041] Other conditions and operations are the same as those in Example 1, except that in step (S1), before adding benzoyl peroxide, 1 part of chain transfer agent dodecanethiol is added.

[0042] Example 6

[0043] Other conditions and operations were the same as those in Example 1, except that the acrylic monomer was a mixture of 3 parts of acrylic acid and 8 parts of hydroxyethyl acrylate, that is, no alkyl acrylate was added.

[0044] Example 7

[0045] Other conditions and operations are the same as those in Example 1, except that the acrylic monomers are 2 parts of acrylic acid, 4 parts of methyl methacrylate, and 8 parts of butyl acrylate, that is, no hydroxyl-containing acrylate is added.

[0046] Example 8

[0047] Other conditions and operations are the same as those in Example 1, except that in step (S2), the amount of chlorinated polyolefin is 100 parts, and the amount of xylene is 150 parts per 100 parts. Finally, the amount of xylene is adjusted so that the solid content of the obtained fluorinated silicified acrylic acid modified chlorinated polyolefin solution is 33.7%.

[0048] Comparative Example 1

[0049] Other conditions and operations were the same as those in Example 1, except that hexafluorobutyl methacrylate was not added in step (S1).

[0050] Comparative Example 2

[0051] Other conditions and operations are the same as those in Example 1, except that vinyltrimethoxysilane is not added in step (S1).

[0052] Comparative Example 3

[0053] Other conditions and operations were the same as those in Example 1, except that polyethylene glycol diacrylate was not added in step (S1).

[0054] Comparative Example 4

[0055] Other conditions and operations are the same as those in Example 1, except that polyethylene glycol acrylate is not added in step (S1).

[0056] Application Example 1

[0057] The fluorinated silicified acrylic modified chlorinated polyolefin provided in the above Example 1 and the comparative example was tested for performance: volatility according to GB / T5211.3, flexibility according to GB / T 1731-1993, impact strength according to GB / T 1732-1993, acid salt spray resistance time according to GB / T 1771-91, and contact angle according to ASTM D7490-13 (2022). The film thickness is 30 μm, and its performance indicators are shown in Table 1 below:

[0058] Table 1 Paint film performance test I

[0059]

[0060]

[0061] It can be seen that when the conventional chlorinated polyolefin resin or chlorinated polyethylene resin on the market is used to replace the fluorinated siliconized acrylic modified chlorinated polyolefin provided in the embodiment for comparative testing, the contact angle of the conventional chlorinated polyolefin or chlorinated polyethylene resin is lower, only about 70°.

[0062] Application Example 2

[0063] The fluorinated siliconized acrylic modified chlorinated polyolefin and epoxy primer (Tiger Eagle Epoxy Primer HY201) provided in the above examples and comparative examples were tested for supporting performance, and the primer adhesion was tested according to GB / T5210-2006, and the marine anticorrosion performance was tested according to GB / T5370-2007. The marine biological attachment area was tested in the East China Sea. The hanging board test was carried out near the coast of the East China Sea. The hanging board was taken out after 2 months, and the antifouling performance was evaluated according to the following evaluation criteria. The results are shown in Table 2 below:

[0064] Grade A: Marine organism attachment area <3%;

[0065] Grade B: 3%≤marine organism attachment area<5%;

[0066] Grade C: 5%≤marine organism attachment area<10%;

[0067] Grade D: Marine organism attachment area ≥ 10%.

[0068] Table 2 Paint film performance test II

[0069]

[0070]

[0071] It can be seen that the fluorinated siliconized acrylic modified chlorinated polyolefin provided by the present invention is used as an anti-corrosion coating, and the coating adhesion and seawater immersion resistance are significantly improved, showing more obvious anti-fouling performance, and the anti-fouling performance is long-lasting and can withstand long-term seawater immersion and acidic salt spray.

Claims

1. A fluorinated siliconized acrylic acid-modified chlorinated polyolefin, It is characterized in that The invention comprises the following raw materials in parts by weight: 60-100 parts of chlorinated polyolefin, 10-20 parts of acrylic monomer, 2-5 parts of polyether macromonomer, 3-6 parts of fluorinated monomer, 5-10 parts of siliconized monomer, 2-5 parts of styrene, 0.2-0.4 parts of polyethylene glycol diacrylate, 7-10 parts of epoxy diluent, 0.5-2 parts of initiator, 0.1-1 parts of catalyst, and organic solvent, wherein the amount of organic solvent is such that the solid content of fluorinated siliconized acrylic acid modified chlorinated polyolefin solution is 25-40%; the polyether macromonomer is selected from at least one of methoxy polyethylene glycol monomethacrylate, 4-hydroxybutyl vinyl ether polyoxyethylene ether, and mercapto polyethylene glycol acrylate; the number average molecular weight of the polyether macromonomer is 2000-3000. g / mol; the acrylic monomer is a mixture of acrylic acid, (meth) alkyl acrylate, and hydroxyl-containing acrylate in a mass ratio of 1-2:7-10:3-5; the fluorinated monomer is selected from at least one of hexafluorobutyl methacrylate, trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, hexafluorocarbon butyl acrylate, and hexafluoroisopropyl methacrylate; the siliconized monomer is selected from at least one of vinyl triethoxysilane, vinyl trimethoxysilane, methacryloxypropyl trimethoxysilane, and methacryloxypropyl triethoxysilane; The preparation method of the fluorinated siliconized acrylic acid modified chlorinated polyolefin comprises the following steps: (S1) Weighing acrylic monomers, polyether macromonomers, fluorinated monomers, siliconized monomers, styrene, polyethylene glycol diacrylate and 40-70% of initiator by weight, stirring until uniform after the materials are added to obtain a fluorinated siliconized acrylic monomer drop solution; (S2) weighing chlorinated polyolefin by weight, adding an organic solvent, heating to 80-120° C. under reflux, and when the chlorinated polyolefin is completely dissolved, adding the fluorosilicified acrylic monomer dropwise solution and polyethylene glycol diacrylate obtained in step (S1), after the dropwise addition is completed, adding the remaining initiator, keeping the temperature at 80-120° C. for 3-5 hours, then cooling to 50-70° C., adding an organic solvent, stirring evenly, adding a catalyst, keeping the temperature at 50-70° C. for reaction for 3-5 hours, and finally adding an epoxy diluent and an organic solvent to obtain a solution of fluorosilicified acrylic modified chlorinated polyolefin.

2. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that The chlorine content of the chlorinated polyolefin is 50-70wt%.

3. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that The chlorine content of the chlorinated polyolefin is 60-65wt%.

4. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that The alkyl (meth)acrylate is selected from at least one of methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and butyl (meth)acrylate; the hydroxyl-containing acrylate is selected from at least one of hydroxyethyl (meth)acrylate and hydroxypropyl (meth)acrylate.

5. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that The molecular weight of the polyethylene glycol diacrylate is 1000-2000 g / mol.

6. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that The initiator is an azo or peroxide initiator, wherein the azo initiator is selected from at least one of azobisisobutyronitrile and azobisisoheptanenitrile; the peroxide initiator is selected from at least one of benzoyl peroxide, di-tert-amyl peroxide and tert-butyl perbenzoate; and / or The catalyst is selected from one or more of triphenylphosphine, dibutyltin dilaurate, zinc oxide, boron trifluoride etherate, N,N-dimethylbenzylamine, dimethylethanolamine, triethylamine; and / or The organic solvent is selected from one or more of benzene, toluene, xylene, ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, methyl isobutyl ketone, cyclohexanone, butanone, butanol, propylene glycol methyl ether, and ethylene glycol butyl ether; and / or The epoxy diluent is selected from at least one of tert-butyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether and benzyl glycidyl ether.

7. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that The raw material of the fluorinated siliconized acrylic acid modified chlorinated polyolefin also includes 1-2 parts of a chain transfer agent, and the chain transfer agent is selected from at least one of isooctyl thioglycolate, mercaptoethanol, and dodecanethiol.

8. The fluorinated siliconized acrylic acid-modified chlorinated polyolefin according to claim 1, It is characterized in that In step (S1), a chain transfer agent is also added.

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