CN112500691B - High-impact-resistance, damp-heat-aging-resistant polycarbonate material and preparation method thereof - Google Patents
High-impact-resistance, damp-heat-aging-resistant polycarbonate material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a polycarbonate material, which mainly comprises the following components: 65-85 parts of aromatic polycarbonate, 10-35 parts of sulfonated polystyrene thermoplastic elastomer, 0-10 parts of phosphorylated polystyrene thermoplastic elastomer, 0-10 parts of azonia-ionized or phosphonium-ionized polystyrene thermoplastic elastomer, 1-5 parts of inorganic filler rich in hydrogen bonds, 0.05-1 part of antioxidant and 0.1-1 part of lubricant. According to the invention, the polystyrene thermoplastic elastomer with the sulfonate groups, the phosphate groups and the optional azonia ionization or phosphonium ionization groups on the side base band, the inorganic filler rich in hydrogen bonds and the like are blended with PC, so that the compatibility of the polystyrene thermoplastic elastomer and the PC matrix is enhanced, and the impact resistance, the humidity and heat aging resistance and the application range of the polycarbonate material are widened.
Description
Technical Field
The invention relates to a polycarbonate material and a preparation method thereof, in particular to a high-impact-resistance, moisture-resistant and heat-aging-resistant polycarbonate material and a preparation method thereof.
Background
The Polycarbonate (PC) is a high molecular polymer containing carbonate bonds in a molecular chain, and can be divided into aliphatic, alicyclic, aliphatic-aromatic and aromatic polycarbonates, wherein the aromatic polycarbonate has excellent mechanical properties, heat resistance, impact toughness, electrical insulation, light transmittance, low creep resistance, low water absorption, good dimensional stability, excellent dielectric properties and the like, can be used as a thermoplastic engineering plastic, and can be widely applied to the fields of automobiles, electronic equipment, buildings, office supplies, optical discs, sports equipment, medical care, computers, aerospace and the like. However, the molecular chain of the polycarbonate contains a large amount of ester groups, so that the polycarbonate is unstable under the damp-heat condition, the molecular chain of the polycarbonate is a rigid group, the stress cracking resistance is poor, the melt viscosity is high, the processing flow property is poor, the impact resistance at low temperature is low, and the application range of the polycarbonate is limited, and therefore, the polycarbonate needs to be modified in order to expand the application range.
Chinese patent CN109021534a discloses a high temperature and high humidity resistant polycarbonate composition, in which an organosilicon toughening agent and an oxazoline-based chain extender are introduced into polycarbonate, and the synergistic effect of the two is used to improve the performance retention rate of polycarbonate materials under high temperature and high humidity conditions. However, the oxazolinyl group used in the scheme belongs to toxic organic matters, is not beneficial to the environment and health, and reduces the application range of the polycarbonate material. Chinese patent CN109280355A discloses a PC/ABS blend material with hydrolysis resistance, high CTI and high flame retardance, which improves the hydrolysis resistance of PC/ABS by adding diamine carbide, oxazoline and epoxide into a polycarbonate substrate as a hydrolysis stabilizer, but the adopted diamine carbide is alkaline, and can degrade PC to a certain extent in the melt blending process. CN 201680038442.2 proposes a resin composition excellent in mechanical properties, chemical resistance, appearance and tape release resistance, which is prepared by mixing a polycarbonate, a polyolefin resin and at least one of styrene-ethylene-propylene-styrene block copolymer (SEPS), styrene-ethylene-butylene-styrene block copolymer (SEBS) and styrene-butadiene-butylene-styrene block copolymer (SBBS), wherein the compatibility of the styrene thermoplastic elastomer with a polycarbonate substrate is required to be further improved, and further the impact resistance of the material is improved. CN 201911392117.8 discloses a heat and humidity resistant aging resistant polycarbonate styrene resin alloy and a preparation method thereof, wherein the heat and humidity resistant modifier is hydrophobic fumed silica with the surface subjected to organic treatment, which has poor compatibility with the styrene resin alloy in the melt blending process, is easy to cause phase separation, and further affects the performance of the material.
In summary, a high-impact-resistance, moisture-resistant and heat-aging-resistant polycarbonate material needs to be developed, so that the defects of polycarbonate are overcome, and the application field of the polycarbonate material is widened.
Disclosure of Invention
The invention aims to provide a high-impact-resistance, moisture-resistant and heat-aging-resistant polycarbonate material and a preparation method thereof, wherein a soft-segment highly saturated sulfonated polystyrene thermoplastic elastomer, an optional phosphorylated polystyrene thermoplastic elastomer, a soft-segment highly saturated polystyrene thermoplastic elastomer with side groups containing phosphonium ions/azoium ions, an inorganic filler rich in hydrogen bonds and the like are introduced into a polycarbonate substrate, and the compatibility of the styrene thermoplastic elastomer and the polycarbonate resin is improved through ionic bonds, hydrogen bond crosslinking, interaction of polar groups in the functionalized polystyrene thermoplastic elastomer and carboxyl groups in the polycarbonate and the like, so that the impact resistance, moisture-resistant and heat-aging-resistant performance and the like of the polycarbonate substrate are further improved.
The aim of the invention can be achieved by the following technical means:
a high-impact-resistance damp-heat aging-resistant polycarbonate material comprises the following components in parts by weight:
a:65 to 85, preferably 70 to 80 parts by weight of an aromatic polycarbonate
b:10 to 35 parts by weight, preferably 19 to 29 parts by weight, of a sulfonated polystyrene thermoplastic elastomer
c:0 to 10 parts by weight, preferably 3 to 5 parts by weight, of a phosphated polystyrene thermoplastic elastomer
d:0 to 10, preferably 0 to 5 parts by weight of at least one of azonium-or phosphonium-ionised polystyrene thermoplastic elastomers
e:1 to 5, preferably 1 to 3 parts by weight of an inorganic filler rich in hydrogen bonds
f:0.05 to 1, preferably 0.25 to 0.35, parts by weight of an antioxidant
g:0.1 to 1, preferably 0.25 to 0.35 parts by weight of a lubricant.
In the present invention, the aromatic polycarbonate is a bisphenol A type polycarbonate having a weight average molecular weight of 10000 to 40000, preferably 15000 to 40000, more preferably 22000 to 34000.
In the invention, the sulfonated polystyrene thermoplastic elastomer is a sulfonated polystyrene thermoplastic elastomer with a sulfonate group on a side group obtained by sulfonation reaction of the polystyrene thermoplastic elastomer, wherein the molar content of the sulfonate group accounts for 1-15% of the total structural sum of all styrene and sulfonated styrene structural units, and is preferably 5-10%; the structure is shown as 1
Wherein, in the polystyrene thermoplastic elastomer, the weight percentage of the styrene structural units accounting for all groups is 30-70%, preferably 35-60%, and is at least one selected from any commercial or prepared poly (styrene-ethylene-propylene-styrene) block copolymer (SEPS), poly (styrene-ethylene-butylene-styrene) block copolymer (SEBS) and poly (styrene-b-isobutylene-b-styrene) (SIBS); sulfonated poly (styrene-ethylene-propylene-styrene) block copolymer obtained by sulfonation reaction is called Q-SEPS for short, sulfonated poly (styrene-ethylene-butylene-styrene) block copolymer is called Q-SEBS for short, and sulfonated poly (styrene-b-isobutylene-b-styrene) is called Q-SIBS for short;
wherein the melt index of the polystyrene-based thermoplastic elastomer is selected from 0.4 to 70g/10min, preferably 30 to 60g/10min, according to ISO1133 test (230 ℃, 2.16kg load);
the sulfonation reaction is not limited and may be any prior art disclosed. For example, a certain amount of polymer is weighed and put into a single-neck flask, pumping and nitrogen filling are carried out, a certain amount of solvent such as dichloroethane is added, the polymer solution is obtained by dissolving, then a certain amount of acetylsulfuric acid solution is added, stirring reaction is carried out for a period of time at a certain temperature, then a small amount of methanol is added to stop the reaction, the sulfonated polystyrene thermoplastic elastomer is obtained by post-treatment, and the sulfonation degree of the prepared sample is calculated by nuclear magnetic hydrogen spectrum.
In the invention, the phosphorylated polystyrene thermoplastic elastomer is a side group phosphorylated polystyrene thermoplastic elastomer obtained by phosphorylation reaction of the polystyrene thermoplastic elastomer, wherein the molar content of phosphate groups accounts for 1-15%, preferably 5-10% of the total structural sum of all styrene and phosphorylated styrene structural units, and the structure is shown as the following formula 2:
the phosphorylation reaction is not subject to any limitation, and is optionally prior art as disclosed. For example, in reference to the synthesis method in "Elumalai V, annapororanan R, ganapathikrishnan M, et al, A synthesis study of phosphonated PSEBS for high temperature proton exchange membrane fuel cells [ J ]. Journal of Applied Polymer ence,2018,135 ], a side-group-phosphorylated polystyrene-based thermoplastic elastomer is prepared by subjecting a polystyrene-based thermoplastic elastomer to chloromethylation, and then subjecting the chloromethylated polystyrene-based thermoplastic elastomer to Michelle-Albuzoff reaction with triethyl phosphite.
In the invention, the azonia-or phosphonium-ionized polystyrene thermoplastic elastomer has the molar content of azonia/phosphonium ion groups accounting for 1-15 percent, preferably 5-10 percent of the total structure of all styrene and azonia/phosphonium-ionized styrene structural units, and has the following structure:
wherein R is selected from imidazole compounds or organic phosphorus compounds, wherein the imidazole compounds are selected from at least one of imidazole, N-methylimidazole, N-ethylimidazole, N-propylimidazole, N-butylimidazole, N-benzylimidazole, phenylimidazole, 1-ethylimidazole, 2-methylimidazole, 2-ethylimidazole, 2-propylimidazole, 2-butylimidazole, 1, 2-dimethylimidazole, 2, 4-dimethylimidazole, 2-ethyl-4-methylimidazole and 2, 4-diphenylimidazole, preferably at least one of imidazole, N-methylimidazole, N-ethylimidazole, N-propylimidazole, N-butylimidazole, N-benzylimidazole and phenylimidazole; more preferably at least one of N-methylimidazole and N-benzylimidazole. The organic phosphorus compound is selected from at least one of trimethyl phosphorus, triethyl phosphorus, tripropyl phosphorus, tri-tert-butyl phosphorus, triphenylphosphine, triisopropyl phosphorus, diphenylmethyl phosphorus, diphenylpropyl phosphorus, diphenylisobutyl phosphorus, diphenyln-butyl phosphorus, dimethylphenyl phosphorus, diethylphenyl phosphorus, dipropylphenyl phosphorus and dibutylphenyl phosphorus, preferably at least one of trimethyl phosphorus, triethyl phosphorus, tripropyl phosphorus, tri-tert-butyl phosphorus, triphenylphosphine, triisopropyl phosphorus and diphenylmethyl phosphorus;
the preparation of the azonia-or phosphonium-ionised polystyrene-based thermoplastic elastomer is an optional published process, for example by nucleophilic substitution of chloromethylated polystyrene-based thermoplastic elastomer with R.
In the invention, the inorganic filler rich in hydrogen bonds is at least one of graphene oxide, nano silicon dioxide, hydroxyapatite and nano clay, and preferably graphene oxide and nano silicon dioxide.
In the invention, the antioxidant is any one or the combination of more of hindered phenols, organic phosphorus, thioesters and hindered amines; preferably, one or more of antioxidant series 1076, 1010, 168, 421S, 627 from Ciba (Ciba) are used.
In the invention, the lubricant is any one or a combination of more of pentaerythritol stearate (PETS), modified ethylene bisstearamide (modified EBS) and silicone powder.
The invention also provides a preparation method of the high-impact scratch-resistant polycarbonate composite material, which comprises the following steps: and (3) putting the components into a high-speed mixer for mixing and stirring, and then putting the mixture into a double-screw extruder for extrusion.
Preferably, the method comprises: after the components are put into a high-speed mixer for mixing and stirring, the mixture is added into a weightless feeding scale above a feeding port of a double-screw extruder, the temperature of a conveying section of the double-screw extruder is controlled to be 210-220 ℃, the temperature of a plasticizing section is controlled to be 225-245 ℃, the temperature of a metering section is controlled to be 225-240 ℃, the rotating speed of a screw is controlled to be 400-600rpm, the vacuum degree of a vacuum pumping device of the double-screw metering section is controlled to be less than-0.7 bar, and the product is obtained after drawing, water cooling, air drying, granulating and drying.
The invention has the positive effects that:
a certain amount of soft-segment highly saturated sulfonated polystyrene thermoplastic elastomer with excellent ageing resistance is added into polycarbonate, and in the blending process, the sulfonated polystyrene thermoplastic elastomer is entangled with polycarbonate molecular chains through a reversible crosslinking network formed by hydrogen bonds, so that the compatibility of the thermoplastic elastomer and the polycarbonate phase is enhanced, and the introduction of the polystyrene thermoplastic elastomer endows the material with higher impact property and excellent wet heat ageing resistance.
Detailed Description
For a better understanding of the technical solution of the present invention, the following examples are further described below, but the present invention is not limited to the following examples.
The analytical evaluation methods involved in the examples or comparative examples are as follows:
(1) Impact strength was measured according to ASTM D256 standard, spline size: 63.5 x 12.7 x 3.2mm, notch depth 2.5mm;
(2) Tensile strength, elongation at break, according to ASTM D638, spline size 165 x 13 x 3.2mm;
(3) Evaluation of humid heat aging resistance:
the standard sample bars prepared above are placed in a constant temperature and humidity aging box in an environment of 85 ℃ and 85%RH for 1000 hours, and after aging, the retention rate of the tensile strength and impact strength of the materials is tested according to the standard;
the sources of some of the raw materials for the comparative examples and examples are as follows:
bisphenol A type polycarbonate powder with weight average molecular weight of 22000 produced by PC-1 adopting an interfacial phosgene method is produced by Wanhua chemical group Co., ltd;
bisphenol A type polycarbonate powder with weight average molecular weight 28000 produced by PC-2 adopting an interfacial phosgene method is produced by Wanhua chemical group Co., ltd;
bisphenol A type polycarbonate powder with weight average molecular weight 34000 produced by PC-3 adopting an interfacial phosgene method is produced by Wanhua chemical group Co., ltd;
an antioxidant: b900 produced by steam refining;
and (3) a lubricant: pentaerythritol stearate (PETS), manufactured by Dragon sand Co., ltd;
polystyrene thermoplastic elastomer:
1: styrene-ethylene-butene-styrene Block copolymer (SEBS, styrene content: 67wt%, MFR:2.0g/10min (230 ℃, 2.16kg load) Tuftec H1043 (product name) manufactured by Asahi Kabushiki Kaisha chemical Co., ltd.)
2: styrene-ethylene-propylene-styrene Block copolymer (SEPS, styrene content: 30wt%, MFR:70g/10min (230 ℃ C., 2.16kg load), septon2002 (product name) manufactured by KURARAY Co., ltd.)
3: styrene-ethylene-butene-styrene Block copolymer (SEBS, styrene content: 42wt%, MFR:0.8g/10min (230 ℃, 2.16kg load))
4: styrene-isobutylene-styrene Block copolymer (SIBS, styrene content: 51wt%, MFR:1.5g/10min (230 ℃, 2.16kg load), self-made by the synthetic method in the Shuoshi AL Co-initiated Synthesis of isobutylene and styrene Block copolymer)
Preparative example 1: preparation of sulfonated polystyrene thermoplastic elastomer
(1) 1kg of SEBS (Tuftec H1043) is weighed and put into a reaction kettle, pumping and nitrogen charging are carried out, 10L of 1, 2-dichloroethane is added, and stirring and dissolution are carried out for 1H at 35 ℃ to obtain SEBS solution.
(2) 5L of 1, 2-dichloroethane is added into another reaction flask with pumping and nitrogen charging completed, stirring is carried out at the temperature of minus 10 ℃, 500mL of acetic anhydride is added, then 250mL of concentrated sulfuric acid is slowly added into the reaction flask, and after reaction for 1h, an acetyl sulfuric acid solution is obtained.
(3) After adding 4L of an acetylsulfuric acid solution to the SEBS solution and stirring the mixture at 55℃for 4 hours, 1L of methanol was added to terminate the reaction.
(4) After the reaction is finished, removing insoluble impurities through vacuum suction filtration, pouring filtrate into 7L of normal hexane solution, precipitating sulfonated polymer, performing vacuum suction filtration and leaching to obtain sulfonated polymer solid, and detecting by nuclear magnetism, wherein the sulfonation degree is 10.2%;
the raw materials were treated as described above, and the degree of sulfonation was controlled by controlling the reaction time and the addition amount of the acetylsulfuric acid solution, as shown in the following Table 1 for the prepared sulfonated polystyrene-based thermoplastic elastomer:
TABLE 1
| Raw materialsCommodity name | The sulfonated products are abbreviated as | Degree of sulfonation (%) |
| Tuftec H1043 | QSEBS-1 | 10.2％ |
| Septon2002 | QSEPS-1 | 14.8％ |
| Tuftec H1051 | QSEBS-2 | 1.2％ |
| Homemade SIBS | QSIBS-1 | 6.5％ |
Preparative example 2: preparation of phosphorylated polystyrene thermoplastic elastomer (P-SEBS)
(1) Chloromethylation SEBS preparation: 1kg of SEBS (trade name Tuftec H1043), 1.2kg of trioxymethylene, 5L of trimethylchlorosilane and 20L of chloroform are weighed, added into a 50L reaction kettle, stirred and dissolved, after complete dissolution, the system temperature is reduced to 0 ℃, 900mL of stannic chloride is added, still kept at 0 ℃ for 30min, and after reaction, the temperature is raised to 25 ℃ and stirred for 4H. After the reaction is finished, ethanol and chloroform are used for repeated precipitation, dissolution and washing for a plurality of times, and the mixture is dried in a vacuum drying oven at 60 ℃ to constant weight, so that chloromethylated SEBS, abbreviated as C-SEBS, is obtained, and the molar content of the chloromethylated styrene structural units in the sum of all the styrene structural units and the chloromethylated styrene structural units is 15 percent through nuclear magnetic detection.
(2) Preparation of phosphorylated SEBS: adding 0.8kg of C-SEBS obtained in the step (1), 5L of diethyl carbitol and 2.4kg of triethyl phosphite into a 10L reaction kettle, reacting for 8 hours at 140 ℃, precipitating the polymer into methanol, drying to obtain phosphorylated SEBS, namely P-SEBS, wherein the molar content of phosphorylated styrene structural units in the sum of all styrene structural units and phosphorylated styrene structural units is 15% through nuclear magnetic detection.
Preparative example 3: preparation of azonia-ionized polystyrene thermoplastic elastomer (MI-SIBS)
(1) Chloromethylation SIBS preparation: 1kg of self-made SIBS (styrene content: 51 wt%) is weighed, 1kg of trioxymethylene, 4L of trimethylchlorosilane and 20L of trichloromethane are added into a 50L reaction kettle to be stirred and dissolved, after complete dissolution, the system temperature is reduced to 0 ℃, then 900mL of stannic chloride is added, still kept at 0 ℃ for 30min, and after reaction, the temperature is raised to 25 ℃ and stirred for 4h. After the reaction is finished, ethanol and chloroform are used for repeated precipitation, dissolution and washing for a plurality of times, and the mixture is dried in a vacuum drying oven at 60 ℃ to constant weight, so that chloromethylated SIBS, abbreviated as C-SIBS, is obtained, and the chloromethylated styrene structural units account for 10 percent of the molar content of the sum of all the styrene structural units and the chloromethylated styrene structural units through nuclear magnetic detection.
(2) Azonia ionization SIBS preparation:
500g C-SIBS was dissolved in 2L of chloroform, 150mL of N-methylimidazole was added thereto, and reacted at 25℃for 6 hours to obtain a azonia-ionized poly (styrene-b-isobutylene-b-styrene) triblock copolymer, abbreviated as (MI-SIBS), in which the azonia-ionized styrene structural unit accounted for 10% of the total molar content of all styrene structural units and azonia-ionized styrene structural units.
The preparation process of the polycarbonate material comprises the following steps: according to the corresponding formula, the components are put into a high-speed mixer for mixing and stirring, the mixture is added into a weightless feeding scale above a feeding port of a screw extruder, the conveying section 220 ℃ of the double-screw extruder, the plasticizing section 245 ℃ of the double-screw extruder, the metering section 240 ℃ of the double-screw extruder, the rotating speed of the screw is controlled to be 500rpm, the vacuum degree of a vacuum pumping device of the double-screw metering section is controlled to be less than-0.7 bar, and the products are obtained through drawing, water cooling, air drying, granulating and drying.
Examples 1 to 10
The formulations and properties of the polycarbonate materials of examples 1-10 are detailed in Table 1.
Comparative examples 1 to 10
The formulations and properties of the polycarbonate materials of comparative examples 1-10 are detailed in Table 2.
Table 1 formulation and properties of polycarbonate materials of examples 1-10
Table 2 formulation and properties of polycarbonate composites of comparative examples 1-10
Examples 1 to 10 compared with comparative examples 1 to 10, it was found that the impact strength and the wet heat aging resistance of polycarbonate materials can be improved by adding a certain amount of soft-segment highly saturated pendant-functionalized polystyrene-based thermoplastic elastomer, etc., to conventional PC, and that the impact strength and the wet heat aging resistance of materials can be further improved by adding both the sulfonated polystyrene thermoplastic elastomer and the phosphorylated polystyrene thermoplastic elastomer, as seen in examples 5 to 7, and that, in addition, the impact strength and the wet heat aging resistance of materials can be further improved by adding both the sulfonated polystyrene thermoplastic elastomer, the phosphorylated polystyrene thermoplastic elastomer and the azonia/phosphonium ionized polystyrene thermoplastic elastomer to the system, and that the application fields of polycarbonate materials can be greatly widened.
Those skilled in the art will appreciate that certain modifications and adaptations of the invention are possible and can be made under the teaching of the present specification. Such modifications and adaptations are intended to be within the scope of the present invention as defined in the appended claims.
Claims (12)
1. The high-impact-resistance damp-heat-aging-resistant polycarbonate material is characterized by being prepared from the following components in parts by weight:
a: 65-85 parts by weight of aromatic polycarbonate
b: 10-35 parts by weight of sulfonated polystyrene thermoplastic elastomer
c:1 to 10 parts by weight of a phosphorylated polystyrene thermoplastic elastomer
d:0 to 10 parts by weight of azonium-or phosphonium-ionised polystyrene thermoplastic elastomer
e:1 to 5 parts by weight of an inorganic filler
f:0.05 to 1 weight portion of antioxidant
g:0.1 to 1 part by weight of a lubricant;
wherein the structure of the sulfonated polystyrene thermoplastic elastomer is as follows:
2. the polycarbonate material according to claim 1, wherein the amount of the phosphorylated polystyrene-based thermoplastic elastomer is 3 to 5 parts by weight and the amount of the azonia-or phosphonium-ionized polystyrene-based thermoplastic elastomer is 0 to 5 parts by weight.
3. The polycarbonate material according to claim 1 or 2, wherein the aromatic polycarbonate is bisphenol a type polycarbonate having a weight average molecular weight of 10000 to 40000.
4. The polycarbonate material according to claim 1, wherein the sulfonated polystyrene thermoplastic elastomer is a sulfonated polystyrene thermoplastic elastomer containing sulfonate groups on side groups obtained by sulfonation reaction of the polystyrene thermoplastic elastomer, wherein the molar content of the sulfonate groups accounts for 1-15% of the total structural sum of all styrene and sulfonated styrene structural units.
5. The polycarbonate material according to claim 1, wherein the phosphorylated polystyrene thermoplastic elastomer is a side group phosphorylated polystyrene thermoplastic elastomer obtained by a phosphorylation reaction of a polystyrene thermoplastic elastomer, wherein the molar content of the phosphate group accounts for 1-15% of the total structural sum of all styrene and phosphorylated styrene structural units.
6. The polycarbonate material according to claim 4 or 5, wherein the polystyrene-based thermoplastic elastomer has a styrene structural unit content of 30 to 70% by weight based on all groups, and the polystyrene-based thermoplastic elastomer has a melt index of 0.4 to 70g/10min.
7. The polycarbonate material according to claim 6, wherein the polystyrene-based thermoplastic elastomer has a melt index of 30 to 60g/10min.
8. The polycarbonate material according to any one of claims 4 to 5, wherein the polystyrene-based thermoplastic elastomer is at least one selected from the group consisting of poly (styrene-ethylene-propylene-styrene) block copolymer, poly (styrene-ethylene-butylene-styrene) block copolymer, and poly (styrene-b-isobutylene-b-styrene).
9. The polycarbonate material according to claim 1 or 2, wherein the azonia-or phosphonium-ionized polystyrene-based thermoplastic elastomer has a molar content of azonia/phosphonium ion groups of 1 to 15% of the total of the structures of all styrene and azonia/phosphonium-ionized styrene structural units, and has the following structure:
wherein R is selected from imidazole compounds or organic phosphorus compounds, the imidazole compounds are selected from at least one of imidazole, N-methylimidazole, N-ethylimidazole, N-propylimidazole, N-butylimidazole, N-benzylimidazole and phenylimidazole, and the organic phosphorus compounds are selected from at least one of trimethylphosphorus, triethylphosphorus, tripropylphosphine, tri-tert-butylphosphorus, triphenylphosphine, triisopropylphosphorus and diphenylmethylphosphine.
10. The polycarbonate material according to claim 1 or 2, wherein the inorganic filler is at least one of graphene oxide, nano silica, hydroxyapatite, and nano clay.
11. The polycarbonate material according to claim 1 or 2, wherein the antioxidant is one or more of hindered phenols, organic phosphorus, thioesters, hindered amines; the lubricant is one or more of pentaerythritol stearate, modified ethylene bis-stearamide and silicone powder.
12. A method of preparing the polycarbonate material of any of claims 1-11, comprising: and (3) putting the components into a high-speed mixer for mixing and stirring, and then putting the mixture into a double-screw extruder for extrusion.
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Citations (2)
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