AU2020100580A4 - A plastic alloy and its preparation method - Google Patents

A plastic alloy and its preparation method Download PDF

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AU2020100580A4
AU2020100580A4 AU2020100580A AU2020100580A AU2020100580A4 AU 2020100580 A4 AU2020100580 A4 AU 2020100580A4 AU 2020100580 A AU2020100580 A AU 2020100580A AU 2020100580 A AU2020100580 A AU 2020100580A AU 2020100580 A4 AU2020100580 A4 AU 2020100580A4
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polycarbonate
plastic alloy
weight
salt
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Junwei AI
Yin CEN
Xianbo Huang
Minle PENG
Wei Tong
Peitao WANG
Nanbiao Ye
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Kingfa Science and Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/24—Crystallisation aids

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to a plastic alloy and a preparation method thereof, belonging to the technical field of polymer materials. The plastic alloy of the invention comprises the following components by weight: 1-90 parts of polycarbonate, 1-90 parts of siloxane copolymerized polycarbonate, 1-90 parts of polyethylene terephthalate, 0.01-3 parts of nucleating agent, 0-10 parts of toughening agent and 0-10 parts of compatibilizer. The invention provides a polycarbonate / siloxane copolymerized polycarbonate / polyethylene terephthalate plastic alloy, which integrates the rigidity and heat resistance of polycarbonate, the low temperature impact resistance of siloxane copolymerized polycarbonate, the solvent resistance, excellent molding performance and wear resistance of polyethylene terephthalate. Moreover, the invention adjusts the phase structure of the resin through the nucleating agent, keeps the advantageous performance of the three components at a high level, and achieves the effect of complementary advantages of the components. Therefore, the plastic alloy prepared by the invention has excellent low temperature impact resistance, solvent resistance and wear resistance.

Description

A plastic alloy and its preparation method
Technical Field
The invention relates to a plastic alloy and a preparation method thereof, belonging to the technical field of polymer materials.
Background Technique
Polycarbonate (PC) is a kind of rigid and tough balanced engineering plastics, which is widely used in the fields of electronics, rail transit and aerospace. However, due to its poor wear resistance and solvent resistance, and polyethylene terephthalate (PET) as a crystalline material has good solvent resistance and wear resistance, so people prepare PC / Pet alloy to improve the wear resistance and solvent resistance of polycarbonate, but the addition of polyethylene terephthalate will also reduce the toughness of polycarbonate, resulting in its impact performance reduction Especially, the decline of low temperature impact resistance restricts the use of PC / Pet alloy in the field of low temperature.
The patent application No. 201710139597.1 discloses a heat-resistant and solvent resistant PC / PET modified resin, in which a polymer compatibilizer containing reactive epoxy functional group is introduced into the PC / PET modified resin to obtain better heat-resistant performance by inhibiting the transesterification reaction. However, the patent application No. 201710139597.1 does not solve the problem of low temperature toughness degradation of PC / PET modified resin.
The patent application No. 201310721176.1 discloses a PC/PET alloy material and its preparation method. By introducing flame retardant and organosilicon compound into the PC/PET alloy material, the PC/PET alloy material with excellent mechanical properties, low temperature resistance, wear resistance, good flame retardant and antistatic properties is obtained. The application emphasizes the excellent performance of polycarbonate and polyethylene terephthalate, as well as the good flame retardant and antistatic properties. For the low temperature impact resistance of PC/PET alloy material, the patent application No. 201310721176.1 has not been solved.
Summary of The Invention
The purpose of the invention is to overcome the shortcomings of the prior art and provide a plastic alloy capable of resisting low temperature impact, solvent and wear at the same time and a preparation method thereof.
To achieve the above purpose, the technical scheme adopted by the invention is: a plastic alloy, which comprises the following components by weight: 1-90 parts of polycarbonate (PC), 1-90 parts of siloxane copolymerized polycarbonate, 1-90 parts of polyethylene terephthalate (PET), 0.01-3 parts of nucleating agent, 0-10 parts of toughening agent and 0-10 parts of compatibilizer. Siloxane copolycarbonate has good solvent resistance and low-temperature impact resistance. The invention improves the solvent resistance and low-temperature impact resistance of PC / Pet alloy material through the introduction of siloxane copolycarbonate. However, the properties of multiphase structure are not the simple superposition of the advantages of single-phase structure. Polyethylene terephthalate is a crystalline material, polycarbonate and siloxane copolymerized polycarbonate are amorphous materials, and their compatibility is poor. The toughness of the ternary alloy obtained only by the combination of polyethylene terephthalate,
2020100580 16 Apr 2020 polycarboxylate and siloxane copolymerized polycarbonate is still low. Therefore, the invention further introduces nucleating agent, improves the crystalline form of polyethylene terephthalate, and further optimizes the phase structure of polycarbonate and polyethylene terephthalate alloy, which is conducive to forming a more uniform phase form, giving full play to the advantages of each component of the ternary alloy, and finally obtaining a plastic alloy with low temperature impact resistance, solvent resistance and wear resistance.
As a preferred embodiment of the plastic alloy, the polycarbonate is 15-70 parts by weight, the siloxane copolymerized polycarbonate is 15-90 parts by weight, and the polyethylene terephthalate is 10-90 parts by weight. The results show that the plastic alloy with this specific ratio has better low temperature impact resistance, solvent resistance and wear resistance.
As a more preferred embodiment of the plastic alloy, the polycarbonate is 30-60 parts by weight, the siloxane copolymerized polycarbonate is 15-45 parts by weight, and the polyethylene terephthalate is 10-40 parts by weight. In a large number of experiments, the applicant found that the plastic alloy with this ratio had the best low temperature impact resistance, solvent resistance and wear resistance.
As a preferred embodiment of the plastic alloy of the invention, at least one of (a) - (d) is as follows:
(a) The polycarbonate is bisphenol A-type aromatic polycarbonate, the melt mass flow rate of the polycarbonate is 3-60g / lOmin, and the melt mass flow rate of the polycarbonate is measured at 300 °C using 1.2kg weight according to ISO 1133;
(b) The nucleating agent is at least one of talcum powder, calcium carbonate, sodium carbonate, sodium bicarbonate, metal salt of monocarboxylic acid, metal salt of benzoic acid, metal salt of aromatic hydroxysulfonate, metal salt of organic phosphorus compound, polymer particle, alkali metal salt of polyester oligomer;
(C) The toughening agent is at least one of methyl methacrylate-butadiene-styrene copolymer, methyl methacrylate-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-butyl acrylate copolymer, Ethylene-acrylate-glycidyl methacrylate terpolymer, maleic anhydride functionalized ethylene-vinyl acetate copolymer, acrylic tougheners (for example, tougheners with acrylate as shell and rubber particles as core), silicone rubber grafts;
(d) The compatibilizer is at least one of methacrylate acrylate copolymer, styrene maleic anhydride random copolymer and styrene acrylonitrile glycidyl methacrylate.
As a preferred embodiment of the plastic alloy, the melt mass flow rate of the polycarbonate is 3-25 G / lOmin; the metal salt of the monocarboxylic acid is the sodium salt, lithium salt, barium salt, magnesium salt, potassium salt or calcium salt of the monocarboxylic acid; the metal salt of the benzoic acid is the sodium salt, potassium salt or calcium salt of the benzoic acid; the metal salt of the organophosphorus compound is the magnesium salt or zinc salt of the organophosphorus compound.
As a preferred embodiment of the plastic alloy of the invention, the nucleating agent is a sodium salt of talc powder or monocarboxylic acid.
As a preferred embodiment of the plastic alloy of the invention, the melt mass flow rate of the polycarbonate is 3-12 g / lOmin.
As a preferred embodiment of the plastic alloy of the present invention, the plastic alloy also includes at least one of antioxidant, lubricant and ultraviolet absorber. The addition of these additives can improve the comprehensive performance of the plastic alloy of the invention. For
2020100580 16 Apr 2020 example, antioxidant can improve the oxidation resistance of plastic alloy. Of course, auxiliaries are not limited to these kinds. Those skilled in the art can select different kinds of auxiliaries according to different plastic alloys. For example, if you want to improve the stability of plastic alloy, you can also add stabilizer.
As a preferred embodiment of the plastic alloy of the invention, the antioxidant is 0.1-1 parts by weight, the lubricant is 0.1-2 parts by weight, and the ultraviolet absorber is 0.05-1 parts by weight.
In addition, the invention provides a preparation method of the plastic alloy, which comprises the following steps:
(1) Weigh the components in the plastic alloy according to the proportion, put them into the high mixer, mix them well and get the mixture;
(2) The mixture obtained in step (1) is added to the twin-screw extruder for extrusion and granulation to obtain the plastic alloy.
As a preferred embodiment of the preparation method of the plastic alloy, in the step (2), the temperature of each zone of the twin-screw extruder is 200-270 °C, the feeding speed is 15-40kg / h, and the rotation speed of the screw is 150-450r / min.
Compared with the prior art, the beneficial effect of the invention is: the invention provides a polycarbonate / siloxane copolymerized polycarbonate / polyethylene terephthalate plastic alloy, which integrates the rigidity and heat resistance of polycarbonate, the low temperature impact resistance of siloxane copolymerized polycarbonate, the solvent resistance of polyethylene terephthalate, and excellent Forming performance and wear resistance. Moreover, the invention adjusts the phase structure of the resin through the nucleating agent, keeps the advantageous performance of the three components at a high level, and achieves the effect of complementary advantages of the components. Therefore, the plastic alloy prepared by the invention has excellent low temperature impact resistance, solvent resistance and wear resistance.
Detailed Description of preferred Embodiment
In order to better illustrate the purpose, technical scheme and advantages of the invention, the invention will be further described in combination with specific embodiments.
In the following embodiment, the melt mass flow rate of polycarbonate is measured according to ISO 1133 using 1.2kg weight and at 300 °C.
Example 1
An embodiment of the plastic alloy of the invention, and the components of the plastic alloy of the embodiment are shown in Table 1.
The preparation method of the plastic alloy in the embodiment is as follows:
(1) Weigh the components in the plastic alloy according to the proportion, put them into the high mixer, mix them well and get the mixture;
(2) The mixture obtained in step (1) is added to the twin-screw extruder for extrusion and granulation to obtain the plastic alloy; wherein, the temperature of each zone of the twin-screw extruder is 200-270 °C, the feeding speed is 15-40kg / h, and the rotation speed of the screw is 150-450r/ min.
Example 2~8
The components of the plastic alloy in examples 2 to 8 are shown in Table 1, and the preparation methods of the plastic alloy in examples 2 to 8 are the same as those in example 1.
2020100580 16 Apr 2020
At the same time, the following properties of the plastic alloy described in examples 1 to 8 are tested: - 40 °C notch impact strength, - 40 °C DuPont impact strength, solvent resistance (glacial acetic acid), dry wear resistance and wet wear resistance. Among them, the test methods for each performance are:
-Notch impact at 40 °C: refer to ISO 180;
-DuPont impact at 40 °C: Cool 100 mm X 100 mm X 2 mm square plate in low temperature freezer at - 40 °C for 6 h, take it out quickly for low temperature DuPont impact; the weight of DuPont impact specification is 2kg, and the radius of impact cone head is 1 / 8in;
Solvent resistance: fix the ISO stretch spline on the curved fixture with curvature of 1, brush the corresponding solvent in the middle of the spline, and observe the time of crack formation through the crack or fracture;
Dry wear resistance: 5000 cycles of test were carried out on the dermatoglyphic plate in dry state with the friction colorfast, and then the gloss difference before and after friction was characterized with the glossiness meter (60 °), and the wear resistance of the sample plate in dry state was characterized;
Wet wear resistance: the skin pattern plate was tested 5000 times in wet state (ethanol) by friction colorfast, and then the difference of glossiness before and after friction was characterized by glossiness meter (60 °), and the wear resistance of the sample plate in wet state was characterized.
The performance test results of the plastic alloy described in examples 1 to 8 are shown in Table
1.
Table 1
Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8
Bisphenol A aromatic polycarbonate Melt mass flow rate / g/lOmin 12 3 8 25 3 3 60 3
Weight / Parts 45 30 60 15 70 1 90 45
Polysiloxane copolycarbonate / Parts 35 15 45 90 40 60 40 1
Polyethylene terephthalate / Parts 25 40 10 60 90 25 15 1
Toughening agent material Methyl methacryl ate acrylic acid copolyme r Ethylene butyl acrylate copolyme r Silicone rubber graft Methyl Methacryl ate Butadiene Styrene Copolyme r ethylenemethyl acrylate copolyme r ... ... ...
Weight / Parts 0 5 2 10 2 0 0 0
Compatibiliz er material Methacryl ate Methacryl ate styrene maleic styrene maleic Styrene acrylonitri ___ ___ ___
2020100580 16 Apr 2020
acrylate copolyme r acrylate copolyme r anhydride copolyme r anhydride copolyme r le glycidyl methacryl ate
Weight / Parts 1 1 1 8 10 0 0 0
Nucleating agent material Talc sodium salt of monocar boxylic CaCO3 NaHCO3 Na salt of benzoic acid Mg salts of organop hosphor us compou nds K salt of monocar boxylic acid Talc
Weight / Parts 0.4 3 0.4 0.01 0.4 0.4 0.4 3
Antioxidant / Parts 0.4 1 0.1 0.4 0 0 0 0
Lubricant / Parts 0.25 0.1 2 1 0 0 0 0
UV absorber / Parts 0.05 1 0.5 0.5 0 0 0 0
-Notch impact strength at 40 °C /kJ/m2 28.6 25.3 22.4 19.6 17.2 15.4 15.8 8.3
-DuPont impact strength at 40 °C / cm 105 100 90 75 65 65 60 35
Solvent resistance glacial acetic acid 35min 45min 25min 25min 30min 25min 15min 5min
Dry wear resistance δ e 7.0 6.9 7.1 7.5 7.7 7.8 8.3 9.3
Wet wear resistance δ e 6.4 5.8 6.6 7.0 6.8 6.9 7.6 8.1
It can be seen from table 1 that the plastic alloy prepared by the invention has excellent low temperature impact resistance, solvent resistance and wear resistance.
Effect example 1
The weight parts of polycarbonate, siloxane copolymer polycarbonate and polyethylene terephthalate in the plastic alloy of the present invention affect the performance of the plastic alloy, in order to examine the performance of the three parts by weight on the performance of the plastic alloy As a result, the applicant prepared the plastic alloys of the test groups 1-8 according to the method of Example 1, and tested the plastic alloys of the test groups of this effect example according to the test methods for the performance of the plastic alloys described in the above Examples 1-8. performance.
In this effect example, the composition and performance test results of the test group 1 ~ 8 plastic alloys are shown in Table 2.
Table 2
Testi Test 2 Test 3 Test 4 Test 5 Test 6 Test 7 Test 8
Polycarbonate / parts 45 30 60 15 70 1 90 45
Silicone copolymer 35 15 45 90 40 60 40 1
2020100580 16 Apr 2020
polycarbonate / parts
Polyethylene terephthalate / parts 25 40 10 60 90 25 15 1
Nucleating agent / parts 0.01-3 0.01-3 0.01-3 0.01-3 0.01-3 0.01-3 0.01-3 0.01-3
-40 °C notched impact strength / KJ / m2 27.6 23.6 21.1 16.3 15.6 15.0 13.6 7.9
-40 °C DuPont impact strength / cm 100 90 80 70 65 60 60 35
Solvent resistance-glacial acetic acid 35min 35min 25min 25min 30min 20min lOmin 5min
Dry wear resistance δΕ 7.2 7.0 7.3 7.5 7.7 7.8 8.4 9.3
Wet wear resistance δΕ 6.6 5.8 6.6 7.0 6.9 7.1 7.6 8.3
In Table 2, the polycarbonate is a bisphenol A aromatic polycarbonate, the melt flow rate of the polycarbonate is 3-60g / lOmin; the nucleating agent is one of talc, calcium carbonate, sodium carbonate, Sodium bicarbonate, metal salts of monocarboxylic acids, metal salts of benzoic acid, aromatic hydroxysulfonates, metal salts of organic phosphorus compounds, polymer particles, alkali metal salts of polyester oligomers. In addition, the plastic alloys of the test groups are the same except polycarbonate, silicone copolymer polycarbonate, and polyethylene terephthalate.
It can be seen from Table 2 that in the plastic alloy of the present invention, polycarbonate is 15 to 70 parts by weight, silicone copolymer polycarbonate is 15 to 90 parts by weight, and polyethylene terephthalate is 10 to 90 parts by weight. At this time, the obtained plastic alloy is more excellent in low-temperature impact resistance, solvent resistance and wear resistance. Especially when the polycarbonate is 30 to 60 parts by weight, the siloxane copolymer polycarbonate is 15 to 45 parts by weight, and the polyethylene terephthalate is 10 to 40 parts by weight, the low temperature resistance of the obtained plastic alloy The impact performance, solvent resistance and wear resistance are the best.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (2)

  1. There is only two pages of the claim
    2020100580 16 Apr 2020
    1. A plastic alloy, characterized by comprising the following components by weight: 1 ~ 90 parts of polycarbonate, 1 ~ 90 parts of siloxane copolymer polycarbonate, and 1 ~ 90 parts of polyethylene terephthalate, 0.01 ~ 3 parts of nucleating agent, 0 ~ 10 parts of toughening agent, 0 ~ 10 parts of compatibilizer.
    2. The plastic alloy according to claim 1, wherein the polycarbonate is 15 to 70 parts by weight, the siloxane copolymer polycarbonate is 15 to 90 parts by weight, and the polyterephthalene Ethylene glycol formate is 10 to 90 parts by weight.
    3. The plastic alloy according to claim 2, wherein the polycarbonate is 30 to 60 parts by weight, the siloxane copolymer polycarbonate is 15 to 45 parts by weight, and the polyterephthalene Ethylene glycol formate is 10 to 40 parts by weight.
    4. The plastic alloy according to any one of claims 1 to 3, characterized by at least one of the following (a) to (d):
    (A) The polycarbonate is a bisphenol A aromatic polycarbonate, the melt mass flow rate of the polycarbonate is 3-60g/10min, the melt mass flow rate of the polycarbonate is based on ISO 1133 uses a weight of 1.2 kg and measures at a temperature of 300 ° C;
    (b) The nucleating agent is at least one of talcum powder, calcium carbonate, sodium carbonate, sodium bicarbonate, metal salt of monocarboxylic acid, metal salt of benzoic acid, metal salt of aromatic hydroxysulfonate, metal salt of organic phosphorus compound, polymer particle, alkali metal salt of polyester oligomer;
    (c) The toughening agents is at least one of Methyl Methacrylate Butadiene Styrene copolymer, methyl methacrylate acrylic acid copolymer, ethylene methyl acrylate copolymer, ethylene butyl acrylate copolymer, ethylene acrylate glycidyl methacrylate terpolymer, maleic anhydride functionalized ethylene vinyl acetate copolymer, acrylic acid toughening agent and silicone rubber grafts;
    (d) The compatibilizer is at least one of methacrylate acrylate copolymer, styrene maleic anhydride random copolymer and styrene acrylonitrile glycidyl methacrylate.
    5. The plastic alloy according to claim 4, which is characterized in that the melt mass flow rate of the polycarbonate is 3-25 G / lOmin; the metal salt of the monocarboxylic acid is the sodium salt, lithium salt, barium salt, magnesium salt, potassium salt or calcium salt of the monocarboxylic acid; the metal salt of the benzoic acid is the sodium salt, potassium salt or calcium salt of the benzoic acid; the metal salt of the organophosphorus compound is the magnesium salt or zinc salt of the organophosphorus compound.
    6. The plastic alloy of claim 5, wherein the melt flow rate of the polycarbonate is 3-12 g/10 min.
    7. The plastic alloy according to claim 1, further comprising at least one of an antioxidant, a lubricant, and an ultraviolet absorber.
    8. The plastic alloy according to claim 7, wherein the antioxidant is 0.1 to 1 part by weight, the lubricant is 0.1 to 2 parts by weight, and the ultraviolet absorber is 0.05 to 1 part by weight.
    9. The method for preparing a plastic alloy according to any one of claims 1 to 8, comprising the following steps:
    (1) Weigh each component in the plastic alloy according to the proportion, and put it
    2020100580 16 Apr 2020 into the high-mixer, and mix it thoroughly to obtain the mixture;
  2. (2) Add the mixture obtained in step (1) to a twin-screw extruder for extrusion and granulation to obtain the plastic alloy.
    10. The method for preparing a plastic alloy according to claim 9, wherein in the step (2), the temperature of each zone of the twin screw extruder is 200-270 ° C, and the feeding speed is 15-40 kg / h, the rotation speed of the screw is 150-450r/min.
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CN105860474A (en) * 2016-04-12 2016-08-17 东莞市奥能工程塑料有限公司 Heat and solvent resisting lightweight alloy and preparation method thereof
CN105924922A (en) * 2016-05-24 2016-09-07 深圳市富恒新材料股份有限公司 Transparent flame-retardant PC composite material and preparation method thereof
KR101828300B1 (en) * 2016-12-08 2018-02-13 주식회사 삼양사 Polycarbonate resin composition having excellent heat resistance and flowability and molded article comprising the same
CN107746556A (en) * 2017-12-01 2018-03-02 上海金发科技发展有限公司 A kind of imitative ceramic flame-proof PET/PC resin combinations and preparation method thereof
CN109135244B (en) * 2018-08-31 2021-07-13 金发科技股份有限公司 Plastic alloy and preparation method thereof

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