CN112080129B - Radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material and preparation method thereof - Google Patents
Radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material and a preparation method thereof, wherein the blending material comprises the following components: 100 parts of thermoplastic polyurethane elastomer, 1-100 parts of fluororubber, 0.1-10 parts of auxiliary crosslinking agent, 0.01-15 parts of fluorinated polyurethane and 0-100 parts of polydopamine modified layered inorganic compound. The preparation method comprises the steps of fully mixing TPU, fluororubber, fluorinated polyurethane, an auxiliary crosslinking agent and a polydopamine modified layered inorganic substance, then fully melting and mixing on mixing equipment, and performing later-stage radiation vulcanization to obtain the radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material. The blending material disclosed by the invention has excellent medium resistance, processability, flame retardance, heat resistance, dirt resistance and the like, and can be applied to thin-wall products such as films, sealing rings, cables, pipes, bracelets and the like.
Description
Technical Field
The invention relates to a radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material and a preparation method thereof, belonging to the technical field of functional elastomer materials.
Technical Field
Thermoplastic polyurethane elastomer (TPU) is a melt processable thermoplastic elastomer which maintains high elasticity over a wide hardness range, has good mechanical strength and excellent wear resistance, and in addition, has excellent aging resistance and low temperature resistance, but has certain drawbacks in touch feel, chemical medium resistance, weather resistance, heat resistance, and flame retardancy.
The fluororubber is a synthetic polymer elastomer having fluorine atoms in the carbon atoms of the main chain or side chain. Fluororubbers have excellent properties which are not comparable with other rubbers, such as chemical medium resistance, weather resistance, electrical insulation, radiation resistance, flame retardance and the like. The excellent performance of the fluororubber makes the fluororubber become important sealing materials in the automobile, aerospace and chemical industries and materials for conveying oil and chemicals.
Radiation vulcanization is a technical means for initiating a crosslinking reaction between high molecular long chains of a high molecular polymer by using various kinds of radiation. Radiation refers to various nuclear radiation such as gamma rays, neutron beams, particle beams, and the like. When radiation vulcanization is carried out, the polymer does not physically contact with a radiation generating device, and crosslinking reaction is carried out in the polymer, so that the material is changed into thermosetting, the mechanical property, the heat resistance, the medium resistance and the like of the material can be improved, and the application prospect and the commercial value are wide.
To improve the properties of TPUs, it has been reported that fluororubbers are blended with TPUs.
The article "research on modification, structure and performance of fluororubber" researches the structure and performance of the vulcanized fluororubber and TPU blended material. The article mainly discusses the influence of the addition of polyurethane on the low-temperature performance of fluororubber, and the prepared mixed material needs secondary vulcanization, and the preparation process is troublesome.
Patent US5371143 discloses a fluorothermoplastic polymer composite: a continuous phase (1) 0 to 90 parts of a thermoplastic polymer having a melting temperature or glass transition temperature greater than 150 ℃, and (2) 10 to 100 parts of a thermoplastic polymer having a melting temperature greater than 150 ℃; b dispersed phase, dynamically vulcanized fluoroelastomer dispersed in A. However, at least two polymers are required as continuous phases, and the vulcanized fluoroelastomer exhibits a dispersed phase and cannot form a continuous structure.
Patent US7022769B2 discloses a vulcanized fluorocarbon elastomer distributed in a non-fluorine containing thermoplastic polymer forming a continuous phase in which vulcanized fluorocarbon elastomer material forming particles are dispersed. The preparation process requires vulcanization of the fluorocarbon elastomer, which does not form a continuous structure.
Patent US 7521508 B2 discloses a composite material that is radiation cured after the thermoplastic vulcanizate, but the elastomer is as a dispersed phase in the composite material, does not form a continuous structure and does not solve the compatibility problem of the system.
There is a need to develop a blend material of radiation-cured thermoplastic polyurethane elastomer and fluororubber, which can maintain the wear resistance and high elasticity of the thermoplastic polyurethane elastomer, and simultaneously has excellent medium resistance, heat resistance, flame retardant property and processing formability.
Disclosure of Invention
The invention aims to solve the technical problem of providing a radiation vulcanization thermoplastic polyurethane elastomer/fluororubber blending material which has the advantages of flame retardance, heat resistance, chemical medium resistance, good weather resistance and good processability and a preparation method thereof, solving the problems of poor chemical medium resistance, flame retardance, weather resistance, heat resistance and processability of TPU, and widening the application field of the TPU.
In order to achieve the above purpose, the invention adopts the following specific technical scheme:
a radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blended material comprises the following raw materials in parts by weight:
100 parts of thermoplastic polyurethane elastomer;
1 to 100 parts of fluororubber, preferably 5 to 30 parts, more preferably 5 to 15 parts;
0.1 to 10 parts of assistant crosslinking agent, preferably 0.2 to 5 parts, and more preferably 0.5 to 1 part;
0.01 to 15 parts of fluorinated polyurethane, preferably 0.5 to 5 parts, and more preferably 1 to 2 parts.
0 to 100 parts of polydopamine modified lamellar inorganic compound, preferably 5 to 60 parts, and more preferably 10 to 30 parts.
The fluororubber comprises: one or more of fluorocarbon rubber, fluorosilicone rubber, fluorinated phosphazene rubber, nitroso-fluoro rubber, perfluorotriazine rubber, and the like, preferably one or more of fluorocarbon rubber, fluorosilicone rubber, fluorinated phosphazene rubber, nitroso-fluoro rubber.
Preferably, the fluorocarbon rubber is a copolymer comprising one or more of vinylidene fluoride, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, pentafluoropropylene, perfluorovinyl ether, and the like; the copolymer may further contain an olefin monomer and a vulcanization site monomer; the olefin monomer is ethylene, propylene, etc., and the vulcanization site monomer can be trifluorobromoethylene, 4-bromo 3,3,4,4, tetrafluorobutene, perfluoro alkene ether monomer with end-CN, etc.
More preferably, the fluorocarbon rubber is one or more selected from the group consisting of vinylidene fluoride/hexafluoropropylene copolymer, vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene copolymer, vinylidene fluoride/perfluoromethyl vinyl ether/tetrafluoroethylene/cure site copolymer, tetrafluoroethylene/perfluoromethyl vinyl ether/cure site copolymer, ethylene/tetrafluoroethylene/perfluoromethyl vinyl ether/cure site copolymer, tetrafluoroethylene/olefin/cure site copolymer.
The fluorosilicone rubber is preferably a polymer obtained by ring-opening polymerization of an organic cyclotrisiloxane having a fluoroalkyl group or a fluoroaryl group into which fluorine is introduced in a side chain portion of the molecule, and more preferably, the fluorosilicone rubber is γ -trifluoropropylmethylpolysiloxane.
The fluorinated phosphazene rubber preferably has nitrogen and phosphorus as main chains, and the side group is one or more of a fluoroalkoxy chain, trifluoroethoxy group, pentafluoropropoxy group, heptafluorobutoxy group, octafluoropentyloxy group and the like. More preferably, the fluorinated phosphazene rubber is NH 3 And/or NH 4 CI is same as PCI 5 The trimer or tetramer cyclic compound generated by the reaction is a linear polymer formed by ring-opening polymerization, and the main chain is a P-N chain.
The nitroso-fluoro rubber is a fluoro rubber with a molecular main chain containing an N-O structure, and comprises a binary copolymer of a fluorine-containing olefin monomer and nitroso-fluoroalkyl, and a ternary copolymer of the fluorine-containing olefin monomer, the nitroso-fluoroalkyl and nitroso-fluoroalkyl acid; preferably, the nitroso-fluoro rubber is a copolymer of tetrafluoroethylene and trifluoronitrosomethane, a copolymer of tetrafluoroethylene, trifluoronitrosomethane, nitrosoperfluorobutyric acid; more preferably, the nitroso-fluoro rubber is a copolymer of tetrafluoroethylene, trifluoronitrosomethane, nitrosoperfluorobutyric acid.
The perfluorotriazine rubber is a rubber obtained by introducing a triazine structure into a molecular main chain from a fluorine rubber containing C-N on the molecular main chain, and is preferably a copolymer of poly (iminoamidine) and perfluoronitrile and/or perfluoroacylating agent. The perfluoronitrile may be CF 3 (OCF 2 ) 6 CN、CF 3 (OCF 2 ) 2 CN、CF 3 OCF 2 CF 2 OCF 2 CN、C 3 F 7 OCF(CF 3 )CF 3 CF(CF 3 ) CN, etc., the perfluoroacylating agent may be CF 3 (OCF 2 ) 5 COF、CF 3 (OCF 2 ) 6 COF、C 2 F 5 (OCF 2 ) 5 COF、C 3 F 7 (OCF 2 ) 5 COF, and the like.
The hardness of the thermoplastic polyurethane elastomer (TPU) is preferably from 60A to 64D, more preferably from 80A to 60D. The hard segment of the TPU is composed of diisocyanate and a chain extender. The diisocyanate is one or more of Toluene Diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hydrogenated diphenylmethane diisocyanate (HMDI), hexamethylene Diisocyanate (HDI), p-phenylene diisocyanate (PPDI), isophorone diisocyanate (IPDI), 1, 5-Naphthalene Diisocyanate (NDI), xylylene Diisocyanate (XDI), triphenylmethane Triisocyanate (TTI), dimethylbiphenyl diisocyanate (TODI), and the like. The chain extender is a small molecule diamine and/or a small molecule diol. Wherein the small molecule diamine is one or more of 3,3' -dichloro-4, 4' -diaminodiphenylmethane, 3, 5-diamino isobutyl p-chlorobenzoate, diethyl toluene diamine, 3, 5-dimethyl sulfur toluene diamine, 4' -methylene bis (3-chloro-2, 6-diethyl aniline), 1, 3-propanediol-bis (4-aminobenzoate). The small molecular dihydric alcohol is one or more of 1, 4-Butanediol (BDO), ethylene glycol, propylene glycol, methyl propylene glycol, diethylene glycol, 1, 4-cyclohexanediol and neopentyl glycol. The soft segment phase of the TPU consists of polyester polyol and/or polyether polyol. The polyester polyol is one or more of alkyd polyester polyol, polycaprolactone Polyol (PCL) and polycarbonate polyol. The polyether polyol comprises one or more of polypropylene oxide polyol, polytetrahydrofuran polyol and polyether polyol copolymer.
Preferably, the diisocyanate is one or more of TDI, MDI, HMDI, HDI, IPDI; the polyol is preferably one or more of alkyd polyester polyol, polycaprolactone polyol, polypropylene oxide polyol and polytetrahydrofuran polyol.
The preparation of the TPUs can be carried out according to methods known in the art, for example: and (3) carrying out polymerization reaction on MDI (diphenyl-methane-diisocyanate)/BDO/PCL (molar ratio) =8/7/1 according to a two-step method or a one-step method to obtain the thermoplastic polyurethane elastomer.
The fluorine-containing polyurethane is fluorine-containing thermoplastic polyurethane, and the molecular weight of the fluorine-containing polyurethane is 5000-500000, preferably 50000-150000. Preferably a fluorine-containing thermoplastic polyurethane prepared from a fluorine-containing diol and/or a fluorine-containing chain extender.
The addition of the fluorine-containing polyurethane can not only improve the problem of thermodynamic incompatibility between the fluororubber and the TPU, but also form intertwining nodes of molecular chains, thereby further improving the processing performance of the composite material and the heat resistance and medium resistance of a finished product.
The preparation method of fluorine-containing polyurethane can be referred to US3413271, CN1176966C, CN1993334B, CN1326834C, CN101177476B, CN107987251, US3413271, CN1176966C, CN1993334B, CN1326834C, CN101177476B, CN107987251 and the like.
The cross-linking assistant agent is a multifunctional compound containing double bonds or active hydrogen, and includes, but is not limited to, one or more of diallyl maleate, diallyl phthalate, ethylene glycol dimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, triallyl isocyanurate, triallyl cyanurate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, triethylenetetramine, dimethylaminopropylamine, diethylaminopropylamine, and the like. Preferably, the co-crosslinking agent is one or more of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, diallyl maleate, diallyl phthalate, ethylene glycol dimethacrylate, and triallyl isocyanurate. The system can further comprise an acid acceptor, wherein the acid acceptor is one or more of magnesium oxide, zinc oxide, lead oxide, calcium hydroxide, magnesium hydroxide and aluminum hydroxide, and the weight part of the acid acceptor is 1-10 parts, preferably 1-5 parts.
In the polydopamine modified layered inorganic compound, the mass ratio of polydopamine to the layered inorganic compound is (0.001-1): 1, preferably (0.01-0.1): 1.
The layered inorganic compound is: one or more of a layered silicate compound, a layered metal oxide, a layered transition metal disulfide, a diselenide, a layered metal salt compound, and a layered double hydroxide.
The phyllosilicate is one or more of talc, mica, clay, kaolin, montmorillonite, argillaceous substance, chrysotile, layered zeolite, fluoromontmorillonite and fluorohectorite, preferably one or more of mica, clay, kaolin and montmorillonite.
The layered metal oxide is V 2 O 5 、MoO 3 、WO 3 One or more of (a).
The layered transition metal disulfide and diselenide are as follows: MX 2 (M = Ti, zr, hf, V, nb, ta, mo, W, preferably Ti, V, mo; X = S, se).
The layered metal salt compound is one or more of phosphate, arsenate, phosphonate, metal oxyhalide and ferric hydrogen sulfate, and preferably one or more of phosphate and arsenate. Layered metal salt compounds such as potassium phosphate, potassium dihydrogen arsenate, dipotassium hydrogen phosphate, tributyl phosphate, sodium chlorophosphonate, bismuth oxychloride, iron bisulfate, and the like.
The layered double hydroxide is one or two of hydrotalcite and brucite.
The preparation method of the layered inorganic compound modified by the polydopamine comprises the following steps: adding 0.001 g-1 g/mL of layered inorganic compound into an alkaline solution (such as ammonia water) with the pH value of 8-10, adding 0.01 g-1 g/mL of dopamine solution, carrying out oxidative self-polymerization at 5-45 ℃, preferably 20-30 ℃, and carrying out reaction for 2-48 hours, preferably 10-30 hours, more preferably 16-24 hours to obtain the layered inorganic compound modified by polydopamine.
The lamellar inorganic compound can play a role in reinforcing in two dimensions, and the lamellar planes are oriented, so that the lamellar inorganic compound has high barrier property. After the poly-dopamine is modified, layers of the layered inorganic compound are easier to disperse and interact with polymers, the strength of the composite material can be improved on the premise of not reducing the elongation at break of the composite material, and the heat resistance, medium resistance, flame retardant property and dimensional stability of the composite material can also be improved.
The invention also provides a preparation method of the radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blended material. The method comprises the following steps: fully mixing TPU, fluororubber, fluorine-containing polyurethane, an auxiliary crosslinking agent and a polydopamine modified layered inorganic compound, then fully melting and mixing on mixing equipment, and carrying out later-stage radiation vulcanization to obtain the product.
The mixing equipment is selected from an open mill, an internal mixer, an extruder, a high-speed mixer and the like.
The melt mixing temperature of the blended material is 100-250 ℃, preferably 150-220 ℃, and more preferably 180-220 ℃.
The radiation source in the radiation vulcanization method is one or more of beta rays, gamma rays, X rays, alpha rays, ultraviolet rays, microwaves, electron beams, particle beams and neutron beams, and preferably, the radiation source is one or more of gamma rays, X rays, alpha rays and microwaves. The radiation dose is from 1 to 1000KGY, preferably from 20 to 500KGY, more preferably from 50 to 300KGY.
The radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blended material has a three-dimensional crosslinking bicontinuous structure, the addition of an auxiliary crosslinking agent is beneficial to the formation and maintenance of a three-dimensional network structure, the addition of the fluorinated polyurethane and the polydopamine-modified layered inorganic compound can improve the processing formability of the material, the three-dimensional crosslinking network formed by the mixed material is beneficial to the improvement of the mechanical strength, the heat resistance and the medium resistance of the material, the bicontinuous structure can keep the respective excellent performances of the two and further play the synergistic effect of the two, and the radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blended material can be applied to thin-wall products such as films, sealing rings, cables, pipes, bracelets and the like.
The invention has the following beneficial effects:
1. the preparation process of the radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material is simple;
2. the radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blending material has excellent medium resistance (oil resistance, acid resistance, alkali resistance and the like), heat resistance and the like, and simultaneously has excellent processing and forming properties due to the addition of the co-vulcanizing agent, the fluorine-containing polyurethane and the polydopamine-modified layered inorganic compound.
Detailed Description
The present invention is described in detail below by way of examples, it should be noted that the examples are only for the purpose of further illustration, and are not to be construed as limiting the scope of the present invention, and that certain insubstantial modifications and adaptations can be made by those skilled in the art in light of the above teachings.
In the examples, the raw material sources are as follows:
fluorocarbon rubber F2601, a copolymer of vinylidene fluoride and hexafluoropropylene, shanghai saiai-cai-riches-groups ltd;
fluorocarbon rubber F2461, copolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, shanghai sanai riches group ltd;
fluorocarbon rubber
100H: copolymers of tetrafluoroethylene and propylene, asahi glass company, japan;
fluorosilicone rubber NFS9250, new chemical Limited, weihai;
fluorinated phosphazene rubber Eypel-F, available from Ethyl;
carboxyl nitroso-fluoro rubber 7104, aerospace materials and technical research institute;
trimethylolpropane trimethacrylate (TMPTMA), shanghai kanlang biotechnology limited;
triallyl isocyanurate (TAIC), dubesit reagent ltd;
FPU2101: the thermoplastic polyurethane elastomer prepared from the fluorine-containing polyol is self-made, the molecular weight is 149857, and the specific preparation method refers to patent CN 1176966C;
FPU2201: the thermoplastic polyurethane elastomer prepared from the fluorine-containing chain extender is self-made, the molecular weight is 89542, and the specific preparation method refers to patent CN 107987251;
PDA @ MIOCM, namely self-made polydopamine modified layered montmorillonite (polydopamine: layered montmorillonite (weight ratio) = 1);
PDA @ MIOCF, namely polydopamine modified layered zeolite (polydopamine: layered zeolite (mass ratio) = 1);
PDA @ MIOCV polydopamine modified V 2 O 5 (polydopamine: V) 2 O 5 (mass ratio) = 1) self-made;
PDA @ MIOCO: polydopamine modified layered MoS 2 (Polydopamine: moS) 2 (mass ratio) = 1) self-made;
PDA @ MIOCK, polydopamine modified layered dipotassium phosphate (polydopamine: layered dipotassium phosphate (mass ratio) = 1).
The invention is further illustrated by the following specific examples. In this application, parts are by weight unless otherwise specified. The mixing apparatus used in the examples was an open mill and the melt mixing temperature of the blended materials was 200 ℃.
The raw materials and the amounts used in examples 1 to 7 and comparative examples 1 to 2 are shown in Table 1:
TABLE 1
The product performance was tested as follows, with the test results shown in table 2:
and (3) testing mechanical properties: the tensile strength and elongation at break of the composite are referenced to the standard ASTM D412;
and (3) heat resistance test: placing the sample in a blast oven at 136 ℃, placing for a week, and testing after placing for 24 hours at room temperature;
oil resistance test: placing the sample into IRM #903, placing for a week at the temperature of 100 +/-2 ℃, taking out, placing for half an hour at normal temperature, and performing performance test;
acid resistance test: putting the sample into a hydrochloric acid solution with pH of 5.5, placing the sample for a week at the temperature of 23 +/-2 ℃, drying the sample at the temperature of 50 ℃, and then carrying out performance test;
alkali resistance test: putting the sample into NaOH solution with pH of 9.5, placing the sample for a week at the temperature of 23 +/-2 ℃, drying the sample at the temperature of 50 ℃ and then carrying out performance test;
and (3) flame retardant test: reference is made to standard GBT 2408-2008.
TABLE 2
It can be seen from the above table that the thermoplastic polyurethane elastomer added with the fluororubber has improved properties in the aspects of heat resistance, medium resistance (oil resistance, acid resistance, alkali resistance), flame retardance and the like to different degrees compared with the comparative example.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (20)
1. A radiation-vulcanized thermoplastic polyurethane elastomer/fluororubber blended material comprises the following raw materials in parts by weight:
100 parts of thermoplastic polyurethane elastomer;
1-100 parts of fluororubber;
0.1-10 parts of an auxiliary crosslinking agent;
0.01-15 parts of fluorinated polyurethane;
1-100 parts of polydopamine modified layered inorganic compound.
2. The blended material of claim 1, comprising the following raw materials in parts by weight:
100 parts of thermoplastic polyurethane elastomer;
5-30 parts of fluororubber;
0.2-5 parts of an auxiliary crosslinking agent;
0.5-5 parts of fluorinated polyurethane;
5-60 parts of polydopamine modified lamellar inorganic compound.
3. The blended material of claim 2, comprising the following raw materials in parts by weight:
100 parts of thermoplastic polyurethane elastomer;
5-15 parts of fluororubber;
0.5-1 part of assistant crosslinking agent;
1-2 parts of fluorinated polyurethane;
10-30 parts of polydopamine modified layered inorganic compound.
4. The blend material of any of claims 1-3, wherein said thermoplastic polyurethane elastomer has a hardness of from 60A to 64D.
5. The blend material of claim 4, wherein said thermoplastic polyurethane elastomer has a hardness of from 80A to 60D.
6. The blend material according to any of claims 1 to 3, wherein said fluororubber comprises: one or more of fluorocarbon rubber, fluorosilicone rubber, fluorinated phosphazene rubber, nitroso-fluoro rubber and perfluorotriazine rubber.
7. The blend material of claim 6, wherein said fluororubber comprises: one or more of fluorocarbon rubber, fluorosilicone rubber, fluorinated phosphazene rubber and nitroso-fluoro rubber.
8. The blend material of claim 6, wherein the fluorocarbon rubber is a copolymer comprising one or more of vinylidene fluoride, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, pentafluoropropylene, and perfluorovinyl ether, and further wherein the copolymer further comprises an olefin monomer, a cure site monomer; and/or:
the fluorine-silicon rubber is a polymer obtained by ring-opening polymerization of organic cyclotrisiloxane of fluoroalkyl or fluoroaryl introduced into molecular side chain part; and/or:
the fluorinated phosphazene rubber takes nitrogen and phosphorus as main chains, and the side group is one or more of a fluorine alkoxy chain, trifluoroethoxy, pentafluoropropoxy, heptafluorobutoxy and octafluoropentyloxy; and/or:
the nitroso-fluoro rubber comprises a binary copolymer of a fluorine-containing olefin monomer and nitroso-fluoroalkyl, and a ternary copolymer of the fluorine-containing olefin monomer, the nitroso-fluoroalkyl and nitroso-fluoroalkyl acid.
9. The blend material according to any of claims 1 to 3, wherein said fluorine-containing polyurethane is a fluorine-containing thermoplastic polyurethane prepared from a fluorine-containing diol and/or a fluorine-containing chain extender, and the molecular weight is between 5000 and 500000.
10. The blend material according to claim 9, wherein the fluorine-containing polyurethane is a fluorine-containing thermoplastic polyurethane prepared from a fluorine-containing diol and/or a fluorine-containing chain extender, and the molecular weight is 50000-150000.
11. The blend material of any of claims 1-3, wherein the polydopamine-modified layered inorganic compound has a mass ratio of polydopamine to layered inorganic compound of (0.001-1: 1;
the layered inorganic compound is: one or more of a layered silicate compound, a layered metal oxide, a layered transition metal disulfide, a diselenide, a layered metal salt compound, and a layered double hydroxide.
12. The blend material of claim 11, wherein the mass ratio of the polydopamine to the lamellar inorganic compound in the polydopamine-modified lamellar inorganic compound is (0.01-0.1): 1.
13. The blend material of claim 11, wherein the phyllosilicate compound is one or more of talc, mica, clay, kaolin, montmorillonite, argillaceous rock, chrysotile, layered zeolite, fluoromontmorillonite, and fluorohectorite; and/or:
the layered metal oxide is V 2 O 5 、MoO 3 、WO 3 One or more of; and/or:
the layered transition metal disulfide and diselenide are as follows: MX 2 Wherein M = Ti, zr, hf, V, nb, ta, mo, W; and/or:
the layered metal salt compound is one or more of phosphate, arsenate, phosphonate, metal oxyhalide and ferric hydrogen sulfate; and/or:
the layered double hydroxide is one or two of hydrotalcite and brucite.
14. The blend material of claim 13, wherein M = Ti, V, mo; and/or:
the layered metal salt compound is one or more of potassium phosphate, potassium dihydrogen arsenate, dipotassium hydrogen phosphate, tributyl phosphate, sodium chlorophosphonate, bismuth oxychloride and ferric hydrogen sulfate.
15. The blended material according to any of claims 1-3, characterized in that: the cross-linking assistant agent is a polyfunctional compound containing double bonds or active hydrogen, and comprises one or more of diallyl maleate, diallyl phthalate, ethylene glycol dimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, triallyl isocyanurate, triallyl cyanurate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, triethylene tetramine, dimethylaminopropylamine and diethylaminopropylamine.
16. The blended material of claim 15, characterized in that: the auxiliary crosslinking agent is one or more of trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, diallyl maleate, diallyl phthalate, ethylene glycol dimethacrylate and triallyl isocyanurate.
17. A method of making the blended material of any of claims 1-16, comprising: fully mixing TPU, fluororubber, fluorine-containing polyurethane, an auxiliary crosslinking agent and a polydopamine modified layered inorganic compound, then fully melting and mixing on mixing equipment, and performing later-stage radiation vulcanization to obtain a product; the mixing equipment comprises an open mill, an internal mixer, an extruder and a high-speed mixer, and the melting and mixing temperature is 100-250 ℃; in the radiation vulcanization method, the radiation source is one or more of beta rays, gamma rays, X rays, alpha rays, ultraviolet rays, microwaves, electron beams and neutron beams, and the radiation dose is 1-1000 KGY.
18. The method of claim 17, wherein the radiation dose is 20 to 500KGY.
19. The method of claim 17, wherein the radiation dose is 50 to 300KGY.
20. Use of the blend material according to any one of claims 1 to 16 and the blend material prepared according to the process of any one of claims 17 to 19 for applications including films, seals, cables, pipes, bracelets.
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