CN112375361A - Polyester modified good-spraying PC/ABS alloy material and preparation method thereof - Google Patents
Polyester modified good-spraying PC/ABS alloy material and preparation method thereof Download PDFInfo
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- CN112375361A CN112375361A CN202011190846.8A CN202011190846A CN112375361A CN 112375361 A CN112375361 A CN 112375361A CN 202011190846 A CN202011190846 A CN 202011190846A CN 112375361 A CN112375361 A CN 112375361A
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- 239000000956 alloy Substances 0.000 title claims abstract description 65
- 229920007019 PC/ABS Polymers 0.000 title claims abstract description 56
- 229920000728 polyester Polymers 0.000 title claims abstract description 48
- 238000005507 spraying Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 49
- 239000004417 polycarbonate Substances 0.000 claims abstract description 43
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 42
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 29
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 22
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 22
- 239000000314 lubricant Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 13
- -1 polybutylene terephthalate Polymers 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 5
- 239000004645 polyester resin Substances 0.000 claims description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 claims description 3
- 150000002148 esters Chemical group 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000008301 phosphite esters Chemical class 0.000 claims 1
- 229920000515 polycarbonate Polymers 0.000 abstract description 37
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 abstract description 18
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 abstract description 18
- 239000004594 Masterbatch (MB) Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 239000007977 PBT buffer Substances 0.000 abstract 1
- 239000012994 photoredox catalyst Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 description 24
- 239000003973 paint Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 239000004840 adhesive resin Substances 0.000 description 6
- 229920006223 adhesive resin Polymers 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 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 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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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)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a polyester modified PC/ABS alloy material with good spraying performance and a preparation method thereof, wherein the alloy material is prepared from the following raw materials in parts by weight: 45.4-60.4 parts of PC (polycarbonate) middle sticky resin, 28-48 parts of ABS (acrylonitrile-butadiene-styrene) resin, 1-7 parts of PBT middle sticky resin, 3-7 parts of special compatilizer, 1-3 parts of black master batch and 0.1-0.5 part of antioxidant; 0.1-0.5 part of lubricant; the special compatilizer is SAN graft modified resin. The main materials of the polyester modified good spraying PC/ABS alloy material adopt middle-viscosity PC resin and ABS resin, the compatibility of PC, ABS and PBT is improved by introducing a special compatilizer SAN-g-amine resin, and a small amount of crystallized polyester materials such as PBT are added into the non-crystallized PC/ABS alloy, so that the viscosity of the alloy is reduced, and the internal stress of the product is reduced.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a polyester modified PC/ABS alloy material with good spraying performance and a preparation method thereof.
Background
Polycarbonate (PC) has the advantages of high heat resistance, high gloss, good toughness and the like, but has poor fluidity, difficult molding, sensitive product to notch, easy generation of stress cracking and solvent intolerance. The PC/ABS alloy material integrates respective advantages and is easy to process and mold, but due to the influence of a large number of benzene ring structures, a product can generate certain internal stress in the injection molding process. In order to obtain a good visual effect and meet the requirements of long-term weather resistance, scratch resistance and the like, the automobile exterior product generally needs to be sprayed with paint, the paint contains more solvents besides pigment paste, the solvents generate certain corrosion on the surface of a plastic material during spraying, and the adhesive force of the paint is achieved through chemical combination and physical riveting.
If the internal stress of the plastic part is overlarge, the sprayed part is corroded by a paint solvent to release the stress during spraying processing, so that the paint biting phenomenon is easy to generate, the substrate is seriously cracked, and the appearance and the spraying yield of the part are influenced. The spraying qualification rate of the plastic products is generally about 70 percent, so that the spraying cost of the plastic products is far higher than that of the plastic materials.
Disclosure of Invention
In view of the above, the invention provides a polyester modified PC/ABS alloy material with good spraying property and a preparation method thereof, aiming at overcoming the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a polyester modified PC/ABS alloy material with good spraying performance is characterized in that: the alloy material is prepared from the following raw materials in parts by weight:
the special compatilizer is SAN graft modified resin.
Preferably, the alloy material is prepared from the following raw materials in parts by weight:
further, the PC resin is a medium-viscosity bisphenol A polycarbonate.
Further, the ABS resin has the weight percentage content of butadiene of 10-35%, the weight percentage content of acrylonitrile of 15-30% and the weight percentage content of styrene of 30-60%.
Further, the PBT resin is medium-viscosity polybutylene terephthalate, and the viscosity of the medium-viscosity polybutylene terephthalate is 0.9-1.1.
Further, the antioxidant is a mixture of a hindered phenol antioxidant and a phosphite antioxidant.
Further, the lubricant is an ester lubricant.
The preparation method of the polyester modified good spraying PC/ABS alloy material comprises the following steps:
(1) mixing 10-20% of PC resin, ABS resin, PBT polyester resin, a special compatilizer, black master, an antioxidant and a lubricant in a high-speed mixer for 2-3 minutes to obtain a premix;
(2) conveying the premix in the step (1) to a discharge hopper of a double-screw extruder, and mixing the premix with the rest PC resin;
(3) and (3) melting, plasticizing and fully dispersing the mixture obtained in the step (2) in a double-screw extruder, extruding through a die of a machine head, drawing, cooling, granulating and homogenizing to obtain the polyester modified good-spraying PC/ABS alloy material.
Further, the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 120-160 ℃, the temperature of the third zone is 200-230 ℃, the temperature of the fourth zone is 240-260 ℃, the temperature of the fifth zone is 240-260 ℃, the temperature of the sixth zone is 250-260 ℃, the temperature of the seventh zone is 250-260 ℃, the temperature of the eighth zone is 250-260 ℃, the temperature of the ninth zone is 250-260 ℃, the temperature of the head is 250-260 ℃, the rotating speed of the host is 430 rpm, the current of the host is 60-70%, the vacuum negative pressure is-0.075-0.08 MPa, and the melt pressure is 6-8 MPa.
Polybutylene terephthalate (PBT) is a common engineering plastic and has the advantages of high strength, fatigue resistance, small creep, good solvent resistance and the like. By adding a small amount of crystallized polyester materials such as PBT (polybutylene terephthalate) and the like into the amorphous PC/ABS alloy, the viscosity of the alloy is reduced, and the internal stress of the product is reduced; and PBT is dissociated to the surface of the product during injection molding to form a layer of protective film, so that the chemical resistance of the product is improved, and the phenomenon of paint coating and paint biting is improved.
Compared with the prior art, the invention has the following advantages:
the polyester modified good spraying PC/ABS alloy material disclosed by the invention adopts middle-viscosity PC resin and ABS resin as main materials, and through the introduction of a special compatilizer SAN-g-amine resin, the compatilizer contains an amino functional group, and can react with carboxyl in the PC and PBT resin in the extrusion processing and granulation process to form chemical combination, and SAN itself belongs to a part of the ABS resin, so that the special compatilizer can improve the compatibility of PC, ABS and PBT, and a small amount of crystallized polyester materials such as PBT are added into an amorphous PC/ABS alloy, so that the viscosity of the alloy is reduced, and the internal stress of the product is reduced; and secondly, the PBT is dissociated to the surface of the product during injection molding, a uniform protective film is formed in the presence of a special compatilizer, excessive corrosion of a solvent in the paint to the surface of the base material is reduced, the chemical resistance of the product is improved, and the phenomenon of paint spraying and paint biting is improved.
Drawings
FIG. 1 is a diagram illustrating the results of a solvent resistance test on a good spray PC/ABS alloy material modified by polyester according to example 1 of the present invention;
FIG. 2 is a diagram showing the results of a solvent resistance test of a polyester modified good spray PC/ABS alloy material in example 2 according to the present invention;
FIG. 3 is a graph showing the results of a solvent resistance test on a good spray PC/ABS alloy material modified with polyester according to example 3 of the present invention;
FIG. 4 is a graph showing the results of the solvent resistance test of the PC/ABS alloy material that is well spray-coated with the modified polyester in example 4 according to the present invention;
FIG. 5 is a graph showing the results of the solvent resistance test of the PC/ABS alloy material that is well spray-coated with the modified polyester in example 5 according to the present invention;
FIG. 6 is a graph showing the results of the solvent resistance test of the PC/ABS alloy material modified by polyester and sprayed well in comparative example 1 according to the embodiment of the present invention;
FIG. 7 is a graph showing the results of the solvent resistance test of the PC/ABS alloy material modified by polyester and sprayed well in comparative example 2 according to the embodiment of the present invention;
FIG. 8 is a graph showing the results of the solvent resistance test of the PC/ABS alloy material modified by polyester and sprayed well in comparative example 3 according to the embodiment of the present invention.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
The adhesive resin in the PC in the embodiment of the invention is middle-adhesive bisphenol A polycarbonate which is provided by LG chemistry and has the brand number of PC 1300-10 NP;
the ABS resin in the embodiment of the invention is high-petrochemical bulk ABS 8434 resin and Qimei emulsion ABS PA-757 resin;
the viscosity of the PBT resin in the embodiment of the invention is medium-viscosity polybutylene terephthalate, which is provided by Taiwan Changchun and has the brand number of PBT 1100-211M;
the special compatilizer in the embodiment of the invention is SAN graft modified resin provided by Costa, and the brand is SAN-g-amine, wherein S/AN/amine is 67/32/1;
the antioxidant in the embodiment of the invention is a mixture of antioxidant 1010 and antioxidant 168, which is produced and provided by Ciba company;
the lubricant in the embodiment of the invention is an ester lubricant which is provided by LOZA company and has the mark of GLYCOLUBE-P.
Example 1
A polyester modified PC/ABS alloy material with good spraying performance is prepared from the following raw materials in parts by weight: 45.4 parts of PC (polycarbonate) middle adhesive resin, 45 parts of bulk ABS 8434 resin, 3 parts of PBT (polybutylene terephthalate) resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the polyester modified good spraying PC/ABS alloy material comprises the following steps:
(1) mixing 20% of PC resin, ABS resin, PBT polyester resin, a special compatilizer, black master, an antioxidant and a lubricant in a high-speed mixer for 2-3 minutes to obtain a premix;
(2) conveying the premix in the step (1) to a discharge hopper of a double-screw extruder, and mixing the premix with the rest PC resin;
(3) melting, plasticizing and fully dispersing the mixture obtained in the step (2) in a double-screw extruder, extruding through a die of a machine head, drawing, cooling, granulating and homogenizing to obtain the polyester modified good-spraying PC/ABS alloy material; the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 120-160 ℃, the temperature of the third zone is 200-230 ℃, the temperature of the fourth zone is 240-260 ℃, the temperature of the fifth zone is 240-260 ℃, the temperature of the sixth zone is 250-260 ℃, the temperature of the seventh zone is 250-260 ℃, the temperature of the eighth zone is 250-260 ℃, the temperature of the ninth zone is 250-260 ℃, the temperature of the head is 250-260 ℃, the rotating speed of the host is 430 rpm, the current of the host is 60-70%, the vacuum negative pressure is-0.075-0.08 MPa, and the melt pressure is 6-8 MPa.
Example 2
A polyester modified PC/ABS alloy material with good spraying performance is prepared from the following raw materials in parts by weight: 45.4 parts of PC (polycarbonate) middle adhesive resin, 43 parts of bulk ABS 8434 resin, 5 parts of PBT (polybutylene terephthalate) resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the polyester modified PC/ABS alloy material with good spraying property is the same as that of the embodiment 1.
Example 3
A polyester modified PC/ABS alloy material with good spraying performance is prepared from the following raw materials in parts by weight: 45.4 parts of PC (polycarbonate) middle adhesive resin, 41 parts of bulk ABS 8434 resin, 7 parts of PBT (polybutylene terephthalate) resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the polyester modified PC/ABS alloy material with good spraying property is the same as that of the embodiment 1.
Example 4
A polyester modified PC/ABS alloy material with good spraying performance is prepared from the following raw materials in parts by weight: 60.4 parts of PC (polycarbonate) middle adhesive resin, 28 parts of bulk ABS 8434 resin, 5 parts of PBT (polybutylene terephthalate) resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the polyester modified PC/ABS alloy material with good spraying property is the same as that of the embodiment 1.
Example 5
A polyester modified PC/ABS alloy material with good spraying performance is prepared from the following raw materials in parts by weight: 45.4 parts of PC (polycarbonate) middle sticky resin, 43 parts of emulsion ABS (acrylonitrile butadiene styrene) PA-757 resin, 5 parts of PBT (polybutylene terephthalate) resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the polyester modified PC/ABS alloy material with good spraying property is the same as that of the embodiment 1.
Comparative example 1
A PC/ABS alloy material is prepared from the following raw materials in parts by weight: 45.4 parts of PC (polycarbonate) middle sticky resin, 48 parts of bulk ABS 8434 resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the PC/ABS alloy material comprises the following steps:
(1) mixing 20% of PC resin, ABS resin, special compatilizer, black master, antioxidant and lubricant in a high-speed mixer for 2-3 minutes to obtain a premix;
(2) conveying the premix in the step (1) to a discharge hopper of a double-screw extruder, and mixing the premix with the rest PC resin;
(3) melting, plasticizing and fully dispersing the mixture obtained in the step (2) in a double-screw extruder, extruding through a die of a machine head, drawing, cooling, granulating and homogenizing to obtain the polyester modified good-spraying PC/ABS alloy material; the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 120-160 ℃, the temperature of the third zone is 200-230 ℃, the temperature of the fourth zone is 240-260 ℃, the temperature of the fifth zone is 240-260 ℃, the temperature of the sixth zone is 250-260 ℃, the temperature of the seventh zone is 250-260 ℃, the temperature of the eighth zone is 250-260 ℃, the temperature of the ninth zone is 250-260 ℃, the temperature of the head is 250-260 ℃, the rotating speed of the host is 430 rpm, the current of the host is 60-70%, the vacuum negative pressure is-0.075-0.08 MPa, and the melt pressure is 6-8 MPa.
Comparative example 2
A PC/ABS alloy material is prepared from the following raw materials in parts by weight: 45.4 parts of PC (polycarbonate) middle sticky resin, 48 parts of emulsion ABS (acrylonitrile butadiene styrene) PA-757 resin, 5 parts of special compatilizer, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the PC/ABS alloy material comprises the following steps:
(1) mixing 20% of PC resin, PBT polyester resin, a special compatilizer, black master, an antioxidant and a lubricant in a high-speed mixer for 2-3 minutes to obtain a premix;
(2) conveying the premix in the step (1) to a discharge hopper of a double-screw extruder, and mixing the premix with the rest PC resin;
(3) melting, plasticizing and fully dispersing the mixture obtained in the step (2) in a double-screw extruder, extruding through a die of a machine head, drawing, cooling, granulating and homogenizing to obtain the polyester modified good-spraying PC/ABS alloy material; the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 120-160 ℃, the temperature of the third zone is 200-230 ℃, the temperature of the fourth zone is 240-260 ℃, the temperature of the fifth zone is 240-260 ℃, the temperature of the sixth zone is 250-260 ℃, the temperature of the seventh zone is 250-260 ℃, the temperature of the eighth zone is 250-260 ℃, the temperature of the ninth zone is 250-260 ℃, the temperature of the head is 250-260 ℃, the rotating speed of the host is 430 rpm, the current of the host is 60-70%, the vacuum negative pressure is-0.075-0.08 MPa, and the melt pressure is 6-8 MPa.
Comparative example 3
A PC/ABS alloy material is prepared from the following raw materials in parts by weight: 60.4 parts of PC (polycarbonate) middle adhesive resin, 33 parts of bulk ABS 8434 resin, 5 parts of PBT (polybutylene terephthalate) resin, 1 part of black master batch, 0.3 part of antioxidant and 0.3 part of lubricant.
The preparation method of the PC/ABS alloy material comprises the following steps:
(1) mixing 20% of PC resin, ABS resin, PBT polyester resin, black master, antioxidant and lubricant in a high-speed mixer for 2-3 minutes to obtain a premix;
(2) conveying the premix in the step (1) to a discharge hopper of a double-screw extruder, and mixing the premix with the rest PC resin;
(3) melting, plasticizing and fully dispersing the mixture obtained in the step (2) in a double-screw extruder, extruding through a die of a machine head, drawing, cooling, granulating and homogenizing to obtain the polyester modified good-spraying PC/ABS alloy material; the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 120-160 ℃, the temperature of the third zone is 200-230 ℃, the temperature of the fourth zone is 240-260 ℃, the temperature of the fifth zone is 240-260 ℃, the temperature of the sixth zone is 250-260 ℃, the temperature of the seventh zone is 250-260 ℃, the temperature of the eighth zone is 250-260 ℃, the temperature of the ninth zone is 250-260 ℃, the temperature of the head is 250-260 ℃, the rotating speed of the host is 430 rpm, the current of the host is 60-70%, the vacuum negative pressure is-0.075-0.08 MPa, and the melt pressure is 6-8 MPa.
Performance evaluation method and performance standard
After drying the products prepared in examples 1-5 and comparative examples 1-3 in a forced air oven at 80 ℃ for 6 hours, injection molding the products into standard sample strips and 80mm × 50mm × 2.5mm sample plates by using a plastic injection molding machine, wherein the injection molding temperature is 250 ℃; the standard specimens were tested for performance after being placed in a sample box at 23 ℃ for 24 hours at 50% relative humidity. The panels were placed in ethyl acetate: the mixture was taken out from a solvent containing 3:1 n-butanol for 15 seconds, placed in a fume hood, and allowed to stand for 10 minutes, and the surface was observed for changes such as cracks.
The product performance test method comprises the following steps:
tensile strength and elongation at break according to ISO 527, bar specification 1A, length 150mm, thickness 4mm, tensile rate 50 mm/min;
the bending strength and the bending modulus are tested according to ISO 178 standard, the length is 80mm, the width is 10mm, the thickness is 4mm, and the bending rate is 2 mm/min;
the Charpy notch impact strength is tested according to the ISO 179 standard, the length is 80mm, the width is 10mm, the thickness is 4mm, and the notch is type A;
the thermal deformation temperature is tested according to the ISO 75 standard, and the load is 0.45 MPa;
adhesion, testing according to ISO 2409 standard;
solvent resistance, place panel into ethyl acetate: taking out the solvent with the n-butyl alcohol ratio of 3:1 for 15s, placing the solvent in a fume hood for standing for 10min, observing surface change, and observing whether cracks exist or not, wherein the sample plate is whitish and has no cracks, namely the solvent resistance is good; the sample plate is blackened, and the surface is slightly cracked, namely the solvent resistance is poor.
The results of the performance tests on each sample are shown in table 1.
TABLE 1 Performance results
Note: the adhesive force is 0-5, the grade 0 is best, the grade 5 is worst, and the grade is not acceptable when the adhesive force is more than or equal to 2.
Solvent resistance, it is best and worst.
Thirdly, the painted filaments can be reworked after being bitten by paint, but the microcracks cannot be reworked.
As can be seen from table 2: compared with the comparison example, the PC/ABS alloy material prepared by the invention has the advantages that by introducing the special compatilizer and the crystalline polyester material, a layer of uniform protective film is formed on the surface of the sample plate after injection molding due to the PBT resin in the PC/ABS, and the damage of the solvent to a benzene ring can be effectively prevented by immersing the sample plate in the solvent; and the risk of paint biting and scorching is avoided during spraying, so that the prepared PC/ABS alloy material has excellent comprehensive performance.
Examples 1 to 3 show that, in the presence of a special compatibilizer, the solvent resistance is better when the proportion of the PBT content in the polyester is increased, but the notch impact and the heat distortion temperature are reduced; examples 2 and 5 illustrate that PBT is effective in bulk ABS, emulsion ABS and PC alloys in the presence of special compatibilizers; examples 2 and 4 show that for medium PC, high PC content alloy materials, the addition of both a special compatibilizer and PBT is effective.
The polyester improved spraying PC/ABS alloy material can be applied to the fields of automobiles, household appliances and the like, in particular to spray paint products such as spoilers, license plate lamp decorative plates, outer column decorative plates and the like of high-grade automobiles.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A polyester modified PC/ABS alloy material with good spraying performance is characterized in that: the alloy material is prepared from the following raw materials in parts by weight:
the special compatilizer is SAN graft modified resin.
2. The polyester modified good spraying PC/ABS alloy material as claimed in claim 1, wherein: the alloy material is prepared from the following raw materials in parts by weight:
3. the polyester modified good spraying PC/ABS alloy material as claimed in claim 2, wherein: the PC resin is middle-viscosity bisphenol A polycarbonate.
4. The polyester modified good spraying PC/ABS alloy material as claimed in claim 2, wherein: the ABS resin contains 10-35 wt% of butadiene, 15-30 wt% of acrylonitrile and 30-60 wt% of styrene.
5. The polyester modified good spraying PC/ABS alloy material as claimed in claim 2, wherein: the PBT resin is medium-viscosity polybutylene terephthalate, and the viscosity of the medium-viscosity polybutylene terephthalate is 0.9-1.1.
6. The polyester modified good spraying PC/ABS alloy material as claimed in claim 2, wherein: the antioxidant is a mixture of hindered phenol antioxidant and phosphite ester antioxidant.
7. The polyester modified good spraying PC/ABS alloy material as claimed in claim 2, wherein: the lubricant is an ester lubricant.
8. The preparation method of the polyester modified good spraying PC/ABS alloy material as claimed in any one of claims 1-7, characterized in that: the method comprises the following steps:
(1) mixing 10-20% of PC resin, ABS resin, PBT polyester resin, a special compatilizer, black master, an antioxidant and a lubricant in a high-speed mixer for 2-3 minutes to obtain a premix;
(2) conveying the premix in the step (1) to a discharge hopper of a double-screw extruder, and mixing the premix with the rest PC resin;
(3) and (3) melting, plasticizing and fully dispersing the mixture obtained in the step (2) in a double-screw extruder, extruding through a die of a machine head, drawing, cooling, granulating and homogenizing to obtain the polyester modified good-spraying PC/ABS alloy material.
9. The preparation method of the polyester modified PC/ABS alloy material with good spraying property, which is characterized by comprising the following steps: the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 120-160 ℃, the temperature of the third zone is 200-230 ℃, the temperature of the fourth zone is 240-260 ℃, the temperature of the fifth zone is 240-260 ℃, the temperature of the sixth zone is 250-260 ℃, the temperature of the seventh zone is 250-260 ℃, the temperature of the eighth zone is 250-260 ℃, the temperature of the ninth zone is 250-260 ℃, the temperature of the head is 250-260 ℃, the rotating speed of the host is 430 rpm, the current of the host is 60-70%, the vacuum negative pressure is-0.075-0.08 MPa, and the melt pressure is 6-8 MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114350106A (en) * | 2022-03-02 | 2022-04-15 | 苏州慧通汇创科技有限公司 | Preparation method of synthetic engineering plastic |
| CN114605774A (en) * | 2022-03-29 | 2022-06-10 | 江苏金发科技新材料有限公司 | ABS resin composition and preparation method and application thereof |
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| CN1699468A (en) * | 2005-06-13 | 2005-11-23 | 上海普利特复合材料有限公司 | Polycarbonate / acrylonitrile-butadiene-styrene terpolymer resin / polybutylene terephthalate alloy materials |
| CN109423030A (en) * | 2017-09-04 | 2019-03-05 | 四川鑫达企业集团有限公司 | A kind of antistatic, halogen-free flame retardant PC/ABS alloy material preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1699468A (en) * | 2005-06-13 | 2005-11-23 | 上海普利特复合材料有限公司 | Polycarbonate / acrylonitrile-butadiene-styrene terpolymer resin / polybutylene terephthalate alloy materials |
| CN109423030A (en) * | 2017-09-04 | 2019-03-05 | 四川鑫达企业集团有限公司 | A kind of antistatic, halogen-free flame retardant PC/ABS alloy material preparation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114350106A (en) * | 2022-03-02 | 2022-04-15 | 苏州慧通汇创科技有限公司 | Preparation method of synthetic engineering plastic |
| CN114605774A (en) * | 2022-03-29 | 2022-06-10 | 江苏金发科技新材料有限公司 | ABS resin composition and preparation method and application thereof |
| CN114605774B (en) * | 2022-03-29 | 2023-12-29 | 江苏金发科技新材料有限公司 | ABS resin composition and preparation method and application thereof |
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Application publication date: 20210219 |