CN114075380A - High-strength high-impact PC/ABS alloy material and preparation method thereof - Google Patents
High-strength high-impact PC/ABS alloy material and preparation method thereof Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 96
- 229920007019 PC/ABS Polymers 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 72
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 239000004642 Polyimide Substances 0.000 claims abstract description 40
- 229920001721 polyimide Polymers 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 38
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 30
- 239000004417 polycarbonate Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 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 claims abstract description 16
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims description 18
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 17
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 17
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 13
- 238000007605 air drying Methods 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 11
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 2
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 claims 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims 2
- 229920000147 Styrene maleic anhydride Polymers 0.000 claims 2
- 229920006225 ethylene-methyl acrylate Polymers 0.000 claims 2
- 239000005043 ethylene-methyl acrylate Substances 0.000 claims 2
- OWICEWMBIBPFAH-UHFFFAOYSA-N (3-diphenoxyphosphoryloxyphenyl) diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1)(=O)OC1=CC=CC=C1 OWICEWMBIBPFAH-UHFFFAOYSA-N 0.000 claims 1
- 229920009204 Methacrylate-butadiene-styrene Polymers 0.000 claims 1
- BQPNUOYXSVUVMY-UHFFFAOYSA-N [4-[2-(4-diphenoxyphosphoryloxyphenyl)propan-2-yl]phenyl] diphenyl phosphate Chemical compound C=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1C(C)(C)C(C=C1)=CC=C1OP(=O)(OC=1C=CC=CC=1)OC1=CC=CC=C1 BQPNUOYXSVUVMY-UHFFFAOYSA-N 0.000 claims 1
- WWNGFHNQODFIEX-UHFFFAOYSA-N buta-1,3-diene;methyl 2-methylprop-2-enoate;styrene Chemical compound C=CC=C.COC(=O)C(C)=C.C=CC1=CC=CC=C1 WWNGFHNQODFIEX-UHFFFAOYSA-N 0.000 claims 1
- ASMQGLCHMVWBQR-UHFFFAOYSA-M diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)([O-])OC1=CC=CC=C1 ASMQGLCHMVWBQR-UHFFFAOYSA-M 0.000 claims 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000012784 inorganic fiber Substances 0.000 abstract 1
- 208000016261 weight loss Diseases 0.000 description 16
- 230000004580 weight loss Effects 0.000 description 15
- 238000005452 bending Methods 0.000 description 11
- WVJVHUWVQNLPCR-UHFFFAOYSA-N octadecanoyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC(=O)CCCCCCCCCCCCCCCCC WVJVHUWVQNLPCR-UHFFFAOYSA-N 0.000 description 9
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 9
- 239000003365 glass fiber Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000006082 mold release agent Substances 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 206010033307 Overweight Diseases 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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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 discloses a high-strength high-impact PC/ABS alloy material and a preparation method thereof, wherein the preparation method comprises the following steps: the formula of the polycarbonate-based light diffusion material comprises the following components (in weight): 60-80 parts of PC resin, 20-40 parts of ABS resin, 2-8 parts of compatilizer, 5-15 parts of flame retardant, 5-30 parts of polyimide fiber and 0.1-1 part of release agent. 0.1-1 part of anti-dripping agent. Compared with the prior art, the preparation method uses the polyimide fiber as the reinforcement, and compared with the PC/ABS alloy modified and reinforced by inorganic fiber, the prepared PC/ABS alloy has higher impact strength and stronger reinforcing effect. Meanwhile, the conical twin screws are used for melt blending, so that the fiber length can be effectively protected, and the prepared PC/ABS alloy has better comprehensive performance.
Description
Technical Field
The invention belongs to the field of high polymer material alloys, and particularly relates to a high-strength high-impact PC/ABS alloy material and a preparation method thereof.
Background
Since Borg-Warner Chemicals company in the United states developed PC/ABS alloy for the first time in 1963, various types and brands of PC/ABS alloy were developed in Germany, the United states, Japan and other countries.
Hitherto, modified plastic materials have been widely used in various fields such as home appliances, automobiles, electronic and electrical products as important components of advanced polymer materials, the annual capacity of global PC/ABS alloys is about 130 ten thousand tons or more at present, the commercial alloys are the largest commercial alloys sold in the world, and the global PC/ABS alloys still increase at a higher speed, which is shown in the plastic field, and internationally, a large number of PC/ABS alloys with different properties can be provided to meet the strong demands in the fields such as automobiles, electronic and electrical products, office supplies, household goods and the like, wherein the automobile industry is particularly prominent, for example, the consumption of the PC/ABS alloy used in the automobile industry in the United states accounts for 47% of the total consumption of the PC/ABS alloy.
Currently, various companies in the world are still developing new PC/ABS alloy varieties, mainly focusing on: flame retardation, glass fiber reinforcement, electroplating, ultraviolet resistance and other research aspects. In future, PC/ABS alloy will develop towards high performance and functionalization, the application field thereof will be widened continuously, and the requirement of enhancing and modifying materials becomes a hot spot of worldwide research.
The glass fiber reinforced PC/ABS is widely applied at present, has the characteristics of high strength, high heat resistance and the like, and can be widely applied to the fields of household appliances, automobiles, electronics and electrics and the like. However, since the glass fiber is an inorganic material and has a high density, the prepared alloy material has the disadvantage of being heavy.
Polyimide is a polymer containing imide rings on a main chain, and is widely applied to the fields of aviation, aerospace, military equipment and the like as the polyimide is a special engineering material and has excellent mechanical property, thermal property and dielectric property. The main industrial products include films, fibers, etc. As one of high-performance fibers, polyimide fibers have excellent mechanical and thermal properties and are required materials in many fields. Since the 60's of the 20 th century, developed countries dominated by the United states, Soviet Union, have made great efforts to obtain this kind of information at 150F oCThe fiber used for a long time has high mechanical strength, good heat resistance and better flame retardant property, and is an ideal material as a composite material reinforcement.
The existing PC/ABS alloy technology has large performance loss after various additives are added, the mechanical property and the thermal deformation temperature of the PC/ABS alloy are greatly improved after the PC/ABS alloy is reinforced by fibers such as glass fiber, carbon fiber and the like, but the impact strength of the PC/ABS alloy is reduced to a certain extent, so that the application range of the PC/ABS alloy is limited.
CN108034215B discloses a high and low temperature alternating resistant modified polyester alloy material and a preparation method thereof, wherein the modified polyester alloy material comprises the following materials in parts by weight: 20-60 parts of polycarbonate, 20-60 parts of polybutylene terephthalate, 10-50 parts of glass fiber, 5-20 parts of toughening agent, 0.5-5 parts of nano mineral filler, 0.1-3 parts of ester exchange inhibitor, 0.5-5 parts of reactive monomer, 0.2-2 parts of antioxidant and 0.2-2 parts of lubricant. The modified polyester alloy material obtained by the invention has the characteristics of good high and low temperature alternating property resistance and stable mechanical property, and can be used for automobile interior and exterior decorative structural members, precise-sized electronic parts and the like.
The invention selects and adds polyimide organic fiber into PC/ABS alloy material to prepare high-strength and high-impact PC/ABS alloy material. The addition of the polyimide fiber can improve the mechanical property and the heat resistance of the PC/ABS alloy material, can effectively reduce the alloy density of the PC/ABS and achieve the purpose of reducing weight, can obtain different strengths by changing the addition amount of the polyimide fiber, is used for PC/ABS alloy materials in different fields, and is blended by a conical double-screw extruder, so that the retention length of the fiber in the alloy is high, and the comprehensive performance of the alloy is good.
Disclosure of Invention
The invention mainly solves the technical problem of providing a high-strength high-impact PC/ABS alloy, on one hand, the defects of low strength and poor dimensional stability of PC/ABS alloy materials are solved, and the comprehensive performance of the PC/ABS alloy can be obviously improved by adding high-strength high-modulus polyimide fibers into the PC/ABS alloy and simultaneously performing blending extrusion through conical double screws.
In order to solve the problems, the technical scheme adopted by the invention is as follows: providing a high-strength weight-reduced PC/ABS alloy: the paint is characterized by comprising the following components in parts by weight: PC resin: 60-80 parts; ABS resin: 20-40 parts; a compatilizer: 2-6 parts; flame retardant: 5-10 parts; 5-30 parts of polyimide fiber; a release agent: 0.1-1 part; anti-dripping agent: 0.1-1 part; .
Further, the melt index of the polycarbonate is 15g/10min-20g/10 min.
Further, the ABS (acrylonitrile-butadiene-styrene resin) is contained in an amount of 20 to 35 parts, preferably 20 parts.
Further, the polyimide fiber is one of a high-strength high-modulus polyimide chopped fiber or a continuous fiber.
Further, the length of the polyimide chopped fiber is 2-10mm, and preferably 3-6 mm.
Further, the anti-dripping agent is one or more of SAN-coated polytetrafluoroethylene or polytetrafluoroethylene.
The invention provides a method for preparing a high-strength high-impact-resistance weight-reduced PC/ABS alloy, which comprises the following steps: weighing polycarbonate, ABS, compatilizer, flame retardant, mold release agent and anti-dripping agent according to a proportion, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into the high-speed mixer from a main feeding port of a conical double screw, adding polyimide fibers into the high-speed mixer from a side feeding port, and obtaining the high-strength high-impact PC/ABS alloy after extrusion, granulation and air drying. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz.
Further, the processing equipment is a conical double-screw extruder.
Further, the polyimide fiber is added from a side feeding port.
According to the invention, by adding the polyimide fibers, the mechanical property and the heat resistance of the PC/ABS alloy are greatly improved, and meanwhile, the alloy density of the PC/ABS alloy can be effectively reduced, so that the purpose of reducing weight is achieved. Meanwhile, the blending is carried out by utilizing a conical double-screw extruder, the blending effect is better, the original length of the fiber can be effectively protected, and the reinforcing effect of the fiber is kept.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
A high-strength high-impact PC/ABS alloy material comprises the following components by weight percent:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
Polyimide chopped fiber (3 mm) 5 parts
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, compatilizer, flame retardant, mold release agent and anti-dripping agent according to a proportion, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 3mm fibers into the materials through a side feeding port, extruding, granulating and air-drying to obtain the high-strength ABS alloyA strong high impact PC/ABS alloy. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 75MPa, heat distortion temperature of 87 ℃, bending strength of 110MPa, and impact strength of 25KJ/m2。
Example 2
Referring to example 1, unlike example 1, the high-strength, high-impact and weight-reduced PC/ABS alloy of this example is composed of the following weight percentages:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
Polyimide chopped fiber (3 mm) 10 parts
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, compatilizer, flame retardant, mold release agent and anti-dripping agent according to a proportion, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 3mm fiber into the mixture through a side feeding port, extruding, granulating and air-drying to obtain the high-strength high-impact PC/ABS alloy. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 89MPa, heat distortion temperature of 90 ℃, bending strength of 132MPa, impact strength of 31KJ/m2。
Example 3
Referring to example 1, unlike example 1, the high-strength, high-impact and weight-reduced PC/ABS alloy of this example is composed of the following weight percentages:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
20 parts of polyimide chopped fiber (3 mm)
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, a compatilizer, a flame retardant, a release agent and an anti-dripping agent according to a ratio, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 3mm fibers into the mixed materials through a side feeding port, and extruding, granulating and air-drying the materials to obtain the high-strength high-impact PC/ABS alloy. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 98MPa, heat distortion temperature of 92 ℃, bending strength of 150MPa, and impact strength of 34KJ/m2。
Example 4
Referring to example 1, unlike example 1, the high-strength, high-impact and weight-reduced PC/ABS alloy of this example is composed of the following weight percentages:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
30 parts of polyimide chopped fiber (3 mm)
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, compatilizer, flame retardant, mold release agent, anti-dripping agent and white oil according to a certain proportion, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 3mm fibers into the mixed materials through a side feeding port, extruding and granulating the materialsAnd air-drying to obtain the high-strength high-impact PC/ABS alloy. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-weight PC/ABS alloy has the following properties: tensile strength 116MPa, heat distortion temperature 93 ℃, bending strength 174MPa, impact strength 38KJ/m2。
Example 5
Referring to example 1, unlike example 1, the high-strength, high-impact and weight-reduced PC/ABS alloy of this example is composed of the following weight percentages:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
Polyimide chopped fiber (6 mm) 10 parts
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, a compatilizer, a flame retardant, a release agent and an anti-dripping agent according to a ratio, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 6mm fibers into the mixed materials through a side feeding port, and obtaining the high-strength high-impact PC/ABS alloy after extrusion, granulation and air drying. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 92MPa, heat distortion temperature of 90 ℃, bending strength of 135MPa, and impact strength of 32KJ/m2。
Example 6
Referring to example 1, unlike example 1, the high-strength, high-impact and weight-reduced PC/ABS alloy of this example is composed of the following weight percentages:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
Polyimide chopped fiber (6 mm) 20 parts
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, a compatilizer, a flame retardant, a release agent and an anti-dripping agent according to a ratio, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 6mm fibers into the mixed materials through a side feeding port, and obtaining the high-strength high-impact PC/ABS alloy after extrusion, granulation and air drying. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 101MPa, heat distortion temperature of 91 ℃, bending strength of 152MPa, and impact strength of 35KJ/m2。
Example 7
Referring to example 1, unlike example 1, the high-strength, high-impact and weight-reduced PC/ABS alloy of this example is composed of the following weight percentages:
80 portions of PC resin
20 portions of ABS resin
MBS 4 parts
5 parts of triphenyl phosphate
30 parts of polyimide chopped fiber (6 mm)
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the high-strength high-impact weight-loss PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, a compatilizer, a flame retardant, a release agent and an anti-dripping agent according to a ratio, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide 6mm fibers into the mixed materials through a side feeding port, and obtaining the high-strength high-impact PC/ABS alloy after extrusion, granulation and air drying. Controlling extrusion process temperatureThe temperature is 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 101MPa, heat distortion temperature of 91 ℃, bending strength of 152MPa, and impact strength of 38KJ/m2。
Comparative example 1
80 portions of PC resin
20 portions of ABS resin
MBS 6 parts
5 parts of triphenyl phosphate
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the comparative sample PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, compatilizer, flame retardant, mold release agent and anti-dripping agent according to a proportion, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, and extruding, granulating and air-drying to obtain the high-strength high-impact PC/ABS alloy. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 58MPa, heat distortion temperature of 81.5 ℃, bending strength of 86MPa, and impact strength of 70KJ/m2。
Comparative example 2
80 portions of PC resin
20 portions of ABS resin
MBS 6 parts
Glass fiber 10 parts
5 parts of triphenyl phosphate
0.3 part of stearoyl stearate
0.4 part of PTFE.
The preparation method of the comparative sample PC/ABS alloy comprises the following steps: weighing polycarbonate, ABS, compatilizer, flame retardant, mold release agent and anti-dripping agent according to a proportion, adding the weighed materials into a high-speed mixer for stirring, and adding the mixed materials from a main feeding port of a conical double screwAnd adding alkali-free short glass fibers from a side feeding port, and extruding, granulating and air-drying to obtain the high-strength high-impact PC/ABS alloy. The extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz. The prepared high-strength high-impact weight-loss PC/ABS alloy has the following properties: tensile strength of 65MPa, heat distortion temperature of 88 ℃, bending strength of 96MPa, impact strength of 21KJ/m2。
| Tensile Strength (MPa) | Heat distortion temperature (. degree. C.) | Flexural Strength (MPa) | Impact Strength (KJ/m)2） | |
| Example 1 | 75 | 87 | 110 | 25 |
| Example 2 | 89 | 90 | 132 | 31 |
| Example 3 | 98 | 92 | 150 | 34 |
| Example 4 | 116 | 93 | 174 | 38 |
| Example 5 | 92 | 90 | 135 | 32 |
| Example 6 | 101 | 91 | 152 | 35 |
| Example 7 | 120 | 91 | 152 | 38 |
| Comparative example 1 | 58 | 81.5 | 86 | 70 |
| Comparative example 2 | 65 | 88 | 96 | 21 |
As can be seen from Table 1, the polyimide fibers are added into the PC/ABS alloy, and the PC/ABS alloy prepared by blending the polyimide fibers and the PC/ABS alloy through the conical twin-screw extruder has the advantages that the tensile strength, the bending strength and the thermal deformation temperature are greatly improved, the strength is higher than that of the common PC/ABS material, and the content of the polyimide fiber reinforced PC/ABS alloy is higher than that of the glass fiber reinforced PC/ABS alloy with the same content in the aspects of tensile, thermal deformation temperature and bending strength.
The preparation method of the high-strength and high-impact PC/ABS alloy, which is disclosed by the invention, is prepared by adopting a conical double-screw extrusion process, and has the advantages of simple and continuous flow, high production efficiency and stable product quality; the method is more suitable for the fields with higher requirements on temperature, strength and weight reduction.
Claims (10)
1. A high-strength high-impact PC/ABS alloy material is characterized by comprising the following components:
60-80 parts of PC resin
20-40 parts of ABS resin
2-8 parts of compatilizer
5-15 parts of flame retardant
5-30 parts of polyimide fiber
0.1 to 1 portion of parting agent
0.1-1 part of anti-dripping agent.
2. A high strength high impact PC/ABS alloy material according to claim 1, characterized in that the melt index of the PC resin (polycarbonate) is 10 g/10min-20g/10 min.
3. A high-strength high-impact PC/ABS alloy material according to claim 1, wherein the ABS resin (acrylonitrile-butadiene-styrene resin) is contained in an amount of 20 parts.
4. The high-strength high-impact PC/ABS alloy material according to claim 1, wherein the polyimide fibers are one of high-strength high-modulus polyimide chopped fibers or continuous fibers.
5. A high-strength high-impact PC/ABS alloy material according to claim 4, characterized in that the polyimide chopped fibers have a length of 2-10mm, preferably 3-6 mm.
6. A high-strength high-impact PC/ABS alloy material according to claim 4, characterized in that the polyimide continuous fibers are one of untwisted or twisted, preferably untwisted polyimide fibers.
7. A high strength high impact PC/ABS alloy material according to claim 1 characterized in that the flame retardant is one or more of hydroquinone bis (diphenyl phosphate), resorcinol bis (diphenyl phosphate) or bisphenol a-bis (diphenyl phosphate).
8. A high-strength high-impact PC/ABS alloy material according to claim 1, characterized in that the anti-dripping agent is one or more of SAN-coated polytetrafluoroethylene or polytetrafluoroethylene.
9. The high-strength high-impact PC/ABS alloy material as claimed in claim 1 or 8, wherein the compatibilizer is maleic anhydride grafted ABS, methyl methacrylate-butadiene-styrene (MBS), styrene-maleic anhydride (SMA), ethylene-methyl acrylate (EMA) or one or more of ABS high rubber powder.
10. A method for preparing a high-strength high-impact PC/ABS alloy material according to any one of claims 1-9, characterized by comprising the steps of: weighing polycarbonate, ABS, a compatilizer, a flame retardant, a release agent and an anti-dripping agent according to a ratio, adding the weighed materials into a high-speed mixer for stirring, adding the mixed materials into a main feeding port of a conical double screw, adding polyimide fibers into the mixed materials through a side feeding port, and obtaining the high-strength high-impact PC/ABS alloy after extrusion, granulation and air drying; the extrusion processing temperature is controlled to be 220-245 ℃, the screw rotating speed is 100-250 rpm, and the main feeding frequency is 3.0-4.5 Hz.
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