CN112063148A - Hydrolysis-resistant PC composite material with high flame retardant property and preparation method thereof - Google Patents
Hydrolysis-resistant PC composite material with high flame retardant property and preparation method thereof Download PDFInfo
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- CN112063148A CN112063148A CN202010975558.7A CN202010975558A CN112063148A CN 112063148 A CN112063148 A CN 112063148A CN 202010975558 A CN202010975558 A CN 202010975558A CN 112063148 A CN112063148 A CN 112063148A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003063 flame retardant Substances 0.000 title claims abstract description 42
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 42
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004417 polycarbonate Substances 0.000 claims abstract description 85
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 24
- 239000000314 lubricant Substances 0.000 claims abstract description 15
- 229920000642 polymer Polymers 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 239000012745 toughening agent Substances 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 239000000155 melt Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 5
- 125000003700 epoxy group Chemical group 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- LVTHXRLARFLXNR-UHFFFAOYSA-M potassium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate Chemical group [K+].[O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LVTHXRLARFLXNR-UHFFFAOYSA-M 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- BGHBLQKNCVRIKV-UHFFFAOYSA-N OP(O)OP(O)O.OCC(CO)(CO)CO.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O Chemical compound OP(O)OP(O)O.OCC(CO)(CO)CO.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O BGHBLQKNCVRIKV-UHFFFAOYSA-N 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 2
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 2
- PFNROQCAJVOSIR-UHFFFAOYSA-N oxiran-2-ylmethyl 2-methylprop-2-enoate;5-phenylpenta-2,4-dienenitrile Chemical compound CC(=C)C(=O)OCC1CO1.N#CC=CC=CC1=CC=CC=C1 PFNROQCAJVOSIR-UHFFFAOYSA-N 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims 1
- 229910052901 montmorillonite Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000004593 Epoxy Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 238000007605 air drying Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
Landscapes
- 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 belongs to the technical field of high polymer materials, and discloses a hydrolysis-resistant PC composite material with high flame retardant property and a preparation method thereof. The hydrolysis-resistant PC composite material with high flame resistance comprises, by weight, 60-90 parts of polycarbonate, 10-30 parts of polycarbonate with a branched polymer structure, 0.1-5 parts of a flame retardant, 1-10 parts of a compatilizer, 1-10 parts of a toughening agent, 0.1-5 parts of an antioxidant and 0.1-5 parts of a lubricant. According to the hydrolysis-resistant PC composite material with high flame retardance, the epoxy end group compound with high activity is introduced, the PC is subjected to end capping reaction, the hydrolysis reaction is effectively controlled, the hydrolysis stability of a PC product is improved, the branched polymer structure PC is introduced, the entanglement among PC molecular chains is increased, and the notch sensitivity of the product under the high-humidity condition is obviously improved.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a hydrolysis-resistant PC composite material with high flame retardant property and a preparation method thereof.
Background
Polycarbonate (PC for short) has higher molecular weight, is a nearly colorless glassy amorphous polymer, has good optical property and electrical insulation property, good impact resistance, high strength and elastic coefficient and good processing property, has UL 94V-2 grade flame retardant property without additives, has low forming shrinkage and good dimensional stability, is suitable for manufacturing parts with higher requirements on size, has wide use temperature range, and is widely applied to the fields of LED illumination, electronics and electrical, mechanical manufacturing and the like.
However, when a PC material is used in a special environment, particularly in a high-temperature and high-humidity environment, relatively higher requirements are put on the flame retardant performance and hydrolysis resistance of PC, and the common PC composite material cannot meet the requirements. The prior patent CN201810405392.8 mentions a high-hydrolysis-resistance stable PC resin and a preparation method thereof, wherein the preparation method is one-step molding, and the PC resin prepared by adding polyether-ether-ketone, linear low-density polyethylene, epoxy modified phenolic resin and the like has a certain hydrolysis resistance. However, the inventor verifies that the preparation method of the patent greatly reduces the heat resistance and the mechanical property of the material. Therefore, there is a need to develop a PC composite material having flame retardancy and simultaneously having heat resistance and hydrolysis resistance.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide a hydrolysis-resistant PC composite material with high flame retardant property and a preparation method thereof.
In order to achieve the aim of the invention, the hydrolysis-resistant PC composite material with high flame retardant property comprises the following components in parts by weight:
preferably, in some embodiments of the present invention, the hydrolysis-resistant PC composite material with high flame retardant property comprises the following components in parts by weight:
further, the polycarbonate is a resin having a melt flow rate of 8 to 12g/10 min.
Preferably, in some embodiments of the invention, the polycarbonate is a resin having a melt flow rate of 10g/10 min.
Further, the branched polymer structure polycarbonate is a resin having a melt flow rate of 2.5 to 3.5g/10 min.
Preferably, in some embodiments of the present invention, the branched polymer structure polycarbonate is a resin having a melt flow rate of 3g/10 min.
Further, the flame retardant is potassium perfluorobutyl sulfonate and polytetrafluoroethylene according to the weight ratio of 0.2-0.4: 1 and mixing.
Further, the compatibilizing agent is an epoxy-terminated compound having an epoxy group content of 55 to 65%, for example an epoxy-terminated compound having an epoxy group content of 60%.
Further, the toughening agent is one of styrene-acrylonitrile-glycidyl methacrylate, methyl methacrylate-butadiene-styrene copolymer and ethylene-methyl acrylate-glycidyl methacrylate copolymer.
Further, the antioxidant is two of bis (2, 4-di-tert-butylphenol) pentaerythritol diphosphite, tris [2, 4-di-tert-butylphenyl ] phosphite, pentaerythrityl dodecathiopropyl ester and pentaerythrityl tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; preferably, in some embodiments of the present invention, the weight ratio of the two components in the antioxidant is 0.8-1.2: 0.8-1.2.
Further, the lubricant is one of a dipentaerythritol stearate lubricant, an oxidized polyethylene wax, and a hard partially saponified montan ester wax lubricant.
On the other hand, the invention also provides a preparation method of the hydrolysis-resistant PC composite material with high flame retardant property, which comprises the following steps:
(1) respectively putting the polycarbonate and the polycarbonate with the branched polymer structure into a drying oven for drying treatment;
(2) weighing polycarbonate, polycarbonate with a branched polymer structure, a flame retardant, a toughening agent, a compatilizer, an antioxidant and a lubricant according to the required parts by weight;
(3) adding polycarbonate, branched polymer structure polycarbonate, a flame retardant, a toughening agent, a compatilizer, an antioxidant and a lubricant into a mixer, and mixing;
(4) and (3) adding the mixed raw materials in the step (3) into a double-screw extruder, performing melt extrusion at the temperature of 250-270 ℃, and performing granulation after cooling to obtain the hydrolysis-resistant PC composite material with high flame resistance.
Further, the drying treatment in the step (1) has the following process conditions: the temperature is 115 ℃ and 125 ℃, and the time is 4-8 h.
According to the hydrolysis-resistant PC composite material with high flame retardance, the epoxy end group compound with high activity is introduced, so that the PC is subjected to end capping reaction and hydrolysis reaction is effectively controlled, and the hydrolysis stability of a PC product is improved. In addition, the flame retardant effect of PC is improved by using a novel flame retardant potassium perfluorobutylsulfonate, and the harm caused by dripping combustion in the combustion process of the product is reduced by using polytetrafluoroethylene, so that the product has excellent flame retardant property; by introducing the branched polymer structure PC, the entanglement among PC molecular chains is increased, and the notch sensitivity of the product under the high humidity condition is obviously improved.
Compared with the prior art, the invention has the advantages and effects that:
1. the hydrolysis-resistant PC composite material with high flame retardant property prepared by the invention has excellent flame retardant property, and compared with the common PC material, the hydrolysis-resistant PC composite material has excellent hydrolysis resistance after injection molding;
2. the impact strength of the notch simple beam of the high-flame-retardance hydrolysis-resistant PC composite material prepared by the invention after high-temperature water bath can reach 40.3kJ/m2The elongation at break is 70.3 percent, the flame retardant V-0 of 1.6mm is tested by UL94, meanwhile, the surface finish is good, the appearance is soft, and the comprehensive performance is superior to that of the common PC material in the prior art;
3. the composite material is particularly suitable for kitchen and bathroom products, and widens the application field of PC materials.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. It is to be understood that the following description is only illustrative of the present invention and is not to be construed as limiting the present invention.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
In the embodiment of the invention, part of raw material manufacturers and brands are as follows:
example 1
A preparation method of hydrolysis-resistant PC composite material with high flame retardant property comprises the following steps:
1) respectively putting the PC resin and the branched PC resin into a drying oven for drying treatment, wherein the process conditions are as follows: the temperature is 120 ℃, and the time is 4-8 h;
2) weighing PC resin, branched PC resin, a flame retardant, a toughening agent, a compatilizer, an antioxidant and a lubricant according to the weight ratio of the formula;
3) adding the PC resin, the branched PC resin, the flame retardant, the toughening agent, the compatilizer, the antioxidant and the lubricant into a high-speed mixer, and mixing for 20-60 seconds at the rotating speed of 1000 revolutions per minute;
4) adding the mixed raw materials into a double-screw extruder, and carrying out melt extrusion at the temperature of 250-270 ℃, wherein the processing temperature of the extruder is set to be 240 ℃ in a first zone, 270 ℃ in a second zone, 265 ℃ in a third zone, 260 ℃ in a fourth zone, 250 ℃ in a fifth zone, 250 ℃ in a sixth zone, 250 ℃ in a seventh zone, 250 ℃ in an eighth zone and 265 ℃ in a die head; and after cooling, granulating to obtain the hydrolysis-resistant PC composite material with high flame retardant property.
Example 2
The proportions of the components in examples 1 to 6 are shown in Table 1.
The melt flow rate of the polycarbonate in examples 1 to 6 was 10g/10 min; the melt flow rate of the branched PC resin is 3g/10 min; the flame retardant is potassium perfluorobutyl sulfonate and polytetrafluoroethylene according to the weight ratio of 0.2-0.4: 1 (the compounding effect is basically consistent in the proportion) mixing and compounding; the compatilizer is an epoxy end group compound with 60 percent or 40 percent of epoxy group content; the toughening agent is methyl methacrylate-butadiene-styrene copolymer; the antioxidant is a compound of tris [2, 4-di-tert-butylphenyl ] phosphite and tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, and the weight ratio of the two is 1: 1, mixing; the lubricant is a dipentaerythritol stearate lubricant.
TABLE 1 EXAMPLES 1-6 specific formulations (units: Kg)
Example 3
The results of the effect tests on the materials of examples 1 to 6 are shown in Table 2, wherein the evaluation methods of the mechanical property, the flame retardant property and the hydrolysis resistance of the materials of examples 1 to 6 are as follows:
a. drying the hydrolysis-resistant PC composite material in a 120 ℃ forced air drying oven for 4-8 hours, and then performing injection molding to prepare an ISO standard mechanical property test sample strip;
b. and drying the hydrolysis-resistant PC composite material in a 120 ℃ forced air drying oven for 4-8 hours, and then performing injection molding to prepare a UL94 standard sample strip.
Wherein the elongation at break is tested according to ISO 527 standard, the melt index is tested according to ISO 1133 standard, the impact strength of the notched simply supported beam is tested according to ISO 179 standard, and the vertical burning performance is tested according to UL 94.
Table 2 composite test results obtained in examples 1 to 6
The following conclusions were drawn from the test data of the examples:
1. by introducing the epoxy end group compound with high activity, the PC is subjected to end capping reaction and hydrolysis reaction is effectively controlled, so that the hydrolysis stability of the PC product is improved;
2. the flame retardant effect of PC is improved by using a novel flame retardant potassium perfluorobutyl sulfonate, and the harm caused by dripping combustion in the combustion process of a product is reduced by using polytetrafluoroethylene, so that the product has excellent flame retardant property;
3. by introducing the branched polymer structure PC, the entanglement among PC molecular chains is increased, and the notch sensitivity of the product under the high humidity condition is obviously improved;
4. compared with the examples 4 and 6, the content of the compatilizer is doubled while the material performance and the material flowability are integrated, but the toughness and the hydrolysis resistance of the material are not obviously improved, the branched PC content is increased by combining the examples 4 and 5, so that the flowability of the material is greatly reduced, and the material performance and the processing performance are considered if necessary, and the proportion of the example 4 is optimal.
It will be understood by those skilled in the art that the foregoing is only exemplary of the present invention, and is not intended to limit the invention, which is intended to cover any variations, equivalents, or improvements therein, which fall within the spirit and scope of the invention.
Claims (10)
1. The hydrolysis-resistant PC composite material with high flame retardant property is characterized by comprising the following components in parts by weight:
2. the hydrolysis-resistant PC composite material with high flame retardant property of claim 1, which is characterized by comprising the following components in parts by weight:
3. the hydrolysis-resistant PC composite material with high flame retardant property of claim 1, wherein the polycarbonate is a resin with a melt flow rate of 8-12g/10 min; preferably, the polycarbonate is a resin having a melt flow rate of 10g/10 min.
4. The hydrolysis-resistant PC composite material with high flame retardant property of claim 1, wherein the polycarbonate with a branched polymer structure is a resin with a melt flow rate of 2.5-3.5g/10 min; preferably, the branched polymer structure polycarbonate is a resin having a melt flow rate of 3g/10 min.
5. The hydrolysis-resistant PC composite material with high flame retardant property of claim 1, wherein the flame retardant is potassium perfluorobutylsulfonate, polytetrafluoroethylene in a weight ratio of 0.2-0.4: 1, mixing; preferably, the compatibilizing agent is an epoxy-terminated compound having an epoxy group content of 55 to 65%, for example an epoxy-terminated compound having an epoxy group content of 60%.
6. The hydrolysis-resistant PC composite material with high flame retardant property of claim 1, wherein the toughening agent is one of styrene-acrylonitrile-glycidyl methacrylate, methyl methacrylate-butadiene-styrene copolymer and ethylene-methyl acrylate-glycidyl methacrylate copolymer.
7. The hydrolysis-resistant PC composite material having high flame retardant property according to claim 1, wherein the antioxidant is two of bis (2, 4-di-tert-butylphenol) pentaerythritol diphosphite, tris [2, 4-di-tert-butylphenyl ] phosphite, pentaerythrityl dodecathiopropyl ester and tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester; preferably, the weight ratio of the two components in the antioxidant is 0.8-1.2: 0.8-1.2.
8. The hydrolysis-resistant PC composite material having high flame retardant property according to claim 1, wherein the lubricant is one of a dipentaerythritol stearate lubricant, an oxidized polyethylene wax, and a hard partially saponified montmorillonite wax lubricant.
9. The method for preparing a hydrolysis-resistant PC composite material with high flame-retardant property as claimed in any one of claims 1 to 8, characterized in that the preparation method comprises the following steps:
(1) respectively putting the polycarbonate and the polycarbonate with the branched polymer structure into a drying oven for drying treatment;
(2) weighing polycarbonate, polycarbonate with a branched polymer structure, a flame retardant, a toughening agent, a compatilizer, an antioxidant and a lubricant according to the required parts by weight;
(3) adding polycarbonate, branched polymer structure polycarbonate, a flame retardant, a toughening agent, a compatilizer, an antioxidant and a lubricant into a mixer, and mixing;
(4) and (3) adding the mixed raw materials in the step (3) into a double-screw extruder, performing melt extrusion at the temperature of 250-270 ℃, and performing granulation after cooling to obtain the hydrolysis-resistant PC composite material with high flame resistance.
10. The preparation method of the hydrolysis-resistant PC composite material with high flame retardant property as claimed in claim 9, wherein the drying treatment in the step (1) comprises the following process conditions: the temperature is 115 ℃ and 125 ℃, and the time is 4-8 h.
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Application publication date: 20201211 |