CN116120678A - ABS resin for 3D printing and preparation method thereof - Google Patents
ABS resin for 3D printing and preparation method thereof Download PDFInfo
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- CN116120678A CN116120678A CN202310169741.1A CN202310169741A CN116120678A CN 116120678 A CN116120678 A CN 116120678A CN 202310169741 A CN202310169741 A CN 202310169741A CN 116120678 A CN116120678 A CN 116120678A
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- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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Abstract
The invention relates to an ABS resin for 3D printing and a preparation method thereof, belonging to the field of new chemical materials or high polymer materials. The invention designs and prepares the styrene-acrylonitrile polymer with low polymerization degree, so that components of acrylonitrile, butadiene and styrene in ABS have better processability and high fluidity in the combination process; and the high-flow cyclic polyester oligomer modifier (CBT 100) is used as a compatilizer, so that the high-flow cyclic polyester oligomer modifier has good compatibility with ABS, and can effectively improve the flowability of the ABS without changing the mechanical property of the ABS, thereby improving the application of the ABS resin in 3D printing technology.
Description
Technical Field
The invention belongs to the field of new chemical materials or high polymer materials, and particularly relates to a preparation method of ABS resin suitable for 3D printing.
Background
The 3D printing technology can be interpreted as an additive manufacturing technology, namely, a digital three-dimensional model is discrete and layered and piled through specific equipment, and an entity with a specific structure is rapidly manufactured through dimension reduction from point to surface and then accumulated to volume. The technology does not need mechanical processing or a die, and can directly generate an object from computer graphic data, thereby greatly shortening the production period of the product and improving the production efficiency. The 3D printer can be divided into FDM, SLA, SLS, 3DP and other technical principles according to the working principle.
At present, FDM technology is one of the most widely used 3D printing technologies, mainly because the printed materials include a wide variety of thermoplastic resins such as ABS, polycarbonate, polylactic acid, and polyaramid. Compared with other 3D printing technologies, FDM is the only lamination manufacturing method using industrial thermoplastic materials as molding materials, and the printed articles have the characteristics of high heat resistance, corrosive chemicals resistance, bacteria resistance, strong mechanical stress and the like, and are used for manufacturing conceptual models, functional models, even directly manufacturing parts and production tools.
ABS engineering plastics are commonly used for FDM additive manufacturing, and have the advantages of high strength, good toughness, impact resistance, no toxicity, no smell, various colors, bending resistance, good dimensional stability, difficult shrinkage deformation and the like. However, ABS has a slightly higher melting temperature than PLA, and when cooled, it has poor dimensional stability, and it contracts to cause peeling, warping, or cracking.
Therefore, how to improve the physical and mechanical properties of the ABS material through composite modification, and design the ABS resin in fluidity so that the ABS resin is more suitable for the 3D printing technology is a technical problem to be solved in the field.
Disclosure of Invention
In view of the above, the present invention provides a high-flow ABS resin suitable for 3D printing and a preparation method thereof, which can improve the phenomenon of bending and warping of ABS resin in the 3D printing process and ensure the fluidity of ABS resin to meet the requirement of 3D printing.
It should be noted that the present invention is directed to the design of high flow ABS resins suitable for 3D printing, and is first to improve on ABS ternary components, wherein the styrene-acrylonitrile copolymer plays a dominant role in the processability of ABS resins, and the butadiene-styrene-acrylonitrile graft copolymer improves the toughness of ABS resins. Therefore, in order to improve the flowability of ABS resin, it is necessary to reduce the polymerization degree of the styrene-acrylonitrile copolymer and improve the flowability of ABS resin. The ABS wire material required by the 3D printing technology has relatively low melting temperature, and the CBT resin which is the high-flow cyclic polyester oligomer modifier is selected, so that the CBT resin has good compatibility with the ABS resin, has extremely low viscosity when heated at a low temperature, and can obviously improve the fluidity of the ABS resin.
In order to achieve the above object, the present invention provides the following technical solutions:
the high-flow ABS resin for 3D printing mainly comprises the following substances in parts by mass:
24-36 parts of butadiene-styrene-acrylonitrile graft copolymer, 60-72 parts of styrene-acrylonitrile copolymer, 0.05-0.2 part of lubricant, 0.3-0.7 part of plasticizing modifier, 0.1-0.2 part of antioxidant A, 0.03-0.05 part of antioxidant B and 1-5 parts of compatilizer.
Optionally, the lubricant is magnesium stearate, and the plasticizing modifier is ethylene butyl acrylate or EBS vinyl bis stearamide;
the antioxidant A is distearyl pentaerythritol diphosphite or 2, 6-di-tert-butyl-4-cresol, and the antioxidant B is stearyl sulfuryl dipropionate, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate and dilauryl thiodipropionate;
the compatilizer is CBT100, which is purchased from Beijing star Beda chemical materials Co.
The invention also claims a preparation method of the high-flow ABS resin for 3D printing, which specifically comprises the following steps:
(1) Preparing a butadiene-styrene-acrylonitrile graft copolymer by adopting an emulsion polymerization grafting method, preparing a styrene-acrylonitrile copolymer by adopting bulk polymerization, and adjusting the proportion of a styrene monomer and an acrylonitrile monomer to ensure that the melt index of the styrene-acrylonitrile copolymer is more than 32g/10min under the condition of 220 ℃ and 10kg, the N content is more than or equal to 6.5%, the bonded acrylonitrile content is 20-25%, and the number average molecular weight is 60000-70000;
(2) Fully mixing the styrene-acrylonitrile copolymer prepared in the step (1), butadiene-styrene-acrylonitrile grafted copolymer, lubricant, plasticizing modifier, antioxidant A, antioxidant B and compatilizer in a high-speed mixer for 3-5min, adding the blend into a double-screw extruder for melt blending, extruding, granulating, cooling with water, and cutting into cylindrical products with the diameter of phi 3mm x phi 3mm to obtain high-flow ABS resin granules;
(3) Mixing the high-flow ABS resin granules with RQT-G-1 surface brightening agent, ethylene bis stearamide and 5093 universal color master batch in a high-speed mixer for 3-5min, and performing melt extrusion in a 3D printing consumable extrusion experimental line to obtain the high-flow ABS resin for 3D printing.
Alternatively, the mass ratio of butadiene, styrene and acrylonitrile is 52-60:22-30:12-19, and the grafting ratio of the butadiene-styrene-acrylonitrile graft copolymer is 45% -52%, so that the polymerization degree of the styrene-acrylonitrile copolymer can be determined, and the grafting ratio of the butadiene-styrene-acrylonitrile graft copolymer can be used for determining the toughness of the ABS resin.
Optionally, the parameters of the twin-screw extruder in the step (2) are set as follows:
the rotating speed of the screw is 210-250r/min; the temperature of the extruder is respectively set to be four parts of a simplified conveying section, a plasticizing section, a metering section and a die head temperature, wherein the temperature of the simplified conveying section, the plasticizing section, the metering section and the die head temperature are respectively set to be 190-210 ℃, 200-225 ℃, 210-240 ℃ and 215-240 ℃; simultaneously, the machine is vacuumized, and the vacuum degree is 0.06MPa and 0.01MPa.
The processing temperature affects the mixing degree of the butadiene-styrene-acrylonitrile graft copolymer and the styrene-acrylonitrile copolymer, and the performance index of the ABS resin, respectively.
Further optionally, the components in the step (2) are in parts by weight: 24-36 parts of butadiene-styrene-acrylonitrile graft copolymer, 60-72 parts of styrene-acrylonitrile copolymer, 0.05-0.2 part of magnesium stearate, 0.3-0.7 part of plasticizing modifier, 0.1-0.2 part of antioxidant A, 0.03-0.05 part of antioxidant B and 1-5 parts of compatilizer.
Optionally, the extrusion temperature in the step (3) is 200-240 ℃, the screw rotating speed is 110-120rpm, and the high-flow ABS resin wire for 3D printing with the diameter of 1.70-1.75 mm is prepared.
Further optionally, the components in the step (3) are in parts by weight: 92-96 parts of high-fluidity ABS resin granules, 0.5-1.5 parts of RQT-G-1 surface brightening agent, 3-5 parts of ethylene bis stearamide and 0.5-1.5 parts of 5093 universal color masterbatch.
Compared with the prior art, the ABS resin for 3D printing and the preparation method thereof provided by the invention have the following excellent effects:
1) The invention discloses a high-flow ABS resin, which is used for improving the application of the ABS resin in a 3D printing technology, and is designed to prepare a styrene-acrylonitrile polymer with low polymerization degree, so that components of acrylonitrile, butadiene and styrene in the ABS have better processability and high fluidity in the combination process. (melt index 40.0, the best performance in terms of fluidity)
2) The CBT100 serving as the high-flow cyclic polyester oligomer modifier has good compatibility with ABS, and the CBT100 has high fluidity similar to water when heated at low temperature, so that the fluidity of the ABS can be effectively improved and the processing temperature can be reduced under the condition of not changing the mechanical property of the ABS.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph showing the melt index of ABS wire obtained by singly changing the percentage of CBT components at the same component ratio.
FIG. 2 is a drawing of a 3D printed tensile specimen and a curved, impact specimen article.
FIG. 3 is an impact section scanning electron micrograph of the 3D printed article prepared in example 1.
FIG. 4 is a drawing of a scanning electron micrograph of a 3D printed article prepared in example 3.
Detailed Description
The following description of embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a preparation method of high-flow ABS resin suitable for 3D printing.
The present invention will be further specifically illustrated by the following examples, which are not to be construed as limiting the invention, but rather as falling within the scope of the present invention, for some non-essential modifications and adaptations of the invention that are apparent to those skilled in the art based on the foregoing disclosure.
The technical scheme of the invention will be further described below with reference to specific embodiments.
Example 1
The high-flow ABS resin suitable for 3D printing comprises the following components in parts by weight:
0.2 part of magnesium stearate, 0.6 part of ethylene butyl acrylate, 0.15 part of distearyl pentaerythritol diphosphite, 0.05 part of vulcanized dioctadecyl dipropionate, 1001 parts of CBT, 27 parts of butadiene-styrene-acrylonitrile graft copolymer and 70 parts of styrene-propylene copolymer.
Wherein the mass ratio of butadiene to styrene to acrylonitrile is 60:25:15, the melt index of the styrene-acrylonitrile copolymer is 32.13g/10min under the condition of 10kg at 220 ℃, the N content is 7.1%, the bonded acrylonitrile content is 25%, and the number average molecular weight is 68000.
270g of high-impact butadiene-styrene-acrylonitrile terpolymer, 700g of high-flow styrene-acrylonitrile copolymer, 2g of magnesium stearate, 6g of ethylene butyl acrylate, 1.5g of distearyl pentaerythritol diphosphite, 0.5g of vulcanized dioctadecyl dipropionate and 10g of CBT100 are fully mixed in a high-speed mixer for 5min, extruded and granulated, cooled by water and cut into cylindrical products with phi 3mm multiplied by phi 3mm, thus obtaining high-flow ABS resin;
wherein, the temperatures of a machine profile conveying section, a plasticizing section, a metering section and a die head of the homodromous double-screw extruder are respectively set to 210 ℃, 225 ℃, 230 ℃, 240 ℃, and simultaneously the machine profile is vacuumized, and the vacuum degree is 0.05MPa.
950G of the high-flow ABS resin pellets obtained in the above steps, 5G of RQT-G-1 surface brightening agent, 30G of ethylene bis-stearylamine and 15G of 5093 universal color masterbatch are mixed in a high-speed mixer for 3min, and are melt extruded in a 3D printing consumable extrusion test line, wherein the extrusion temperature is set to 200 ℃, the screw speed is set to 100rpm, and a high-flow ABS resin wire with a diameter of 1.75mm and wide and suitable for 3D printing is prepared.
Example 2
The high-flow ABS resin suitable for 3D printing comprises the following components in parts by weight:
0.2 part of magnesium stearate, 0.55 part of ethylene butyl acrylate, 0.2 part of distearyl pentaerythritol diphosphite, 0.05 part of vulcanized distearyl dipropionate, 1002 parts of CBT, 32 parts of butadiene-styrene-acrylonitrile graft copolymer and 65 parts of styrene-acrylonitrile copolymer.
Wherein the mass ratio of butadiene to styrene to acrylonitrile is 55:28:17, the melt index of the styrene-acrylonitrile copolymer is 32.47g/10min under the condition of 220 ℃ and 10kg, the N content is 6.8%, the bonded acrylonitrile content is 25%, and the number average molecular weight is 70000.
320g of high-impact butadiene-styrene-acrylonitrile terpolymer, 650g of high-flow styrene-acrylonitrile copolymer, 2g of magnesium stearate, 5.5g of ethylene butyl acrylate, 2g of distearyl pentaerythritol diphosphite, 0.5g of vulcanized dioctadecyl dipropionate and 20g of CBT100 are fully mixed in a high-speed mixer for 5min, extruded and granulated, cooled by water and cut into cylindrical products with phi 3mm multiplied by phi 3mm, thus obtaining high-flow ABS resin;
wherein, the temperatures of a machine profile conveying section, a plasticizing section, a metering section and a die head of the homodromous double-screw extruder are respectively set to 210 ℃, 225 ℃, 230 ℃, 240 ℃, and simultaneously the machine profile is vacuumized, and the vacuum degree is 0.06MPa.
930G of the high-flow ABS resin pellets described in the above steps were mixed with 15G of R9T-G-1 surface brightening agent, 50G of ethylene bis-stearylamine and 5G of 5093 universal color master in a high-speed mixer for 3min, and melt-extruded in a 3D printing consumable extrusion test line at a temperature of 220 ℃ and a screw speed of 100rpm to prepare high-flow ABS resin wires with a diameter of 1.75mm wide and suitable for 3D printing.
Example 3
The high-flow ABS resin suitable for 3D printing comprises the following components in parts by weight:
0.05 part of magnesium stearate, 0.7 part of ethylene butyl acrylate, 0.2 part of distearyl pentaerythritol diphosphite, 0.05 part of vulcanized dioctadecyl dipropionate, 1003 parts of CBT, 24 parts of butadiene-styrene-acrylonitrile graft copolymer and 72 parts of styrene-acrylonitrile copolymer.
Wherein the mass ratio of butadiene to styrene to acrylonitrile is 52:30:18, the melt index of the styrene-acrylonitrile copolymer is 32.61g/10min under the condition of 10kg at 220 ℃, the N content is 6.7%, the bonded acrylonitrile content is 23%, and the number average molecular weight is 68000.
240g of high-impact butadiene-styrene-acrylonitrile terpolymer, 720g of high-flow styrene-acrylonitrile copolymer, 0.5g of magnesium stearate, 7g of ethylene butyl acrylate, 2g of distearyl pentaerythritol diphosphite, 0.5g of vulcanized dioctadecyl dipropionate and 30g of CBT100 are fully mixed in a high-speed mixer for 5min, extruded and granulated, cooled by water and cut into cylindrical products with phi 3mm multiplied by phi 3mm, thus obtaining high-flow ABS resin;
wherein, the temperatures of a machine profile conveying section, a plasticizing section, a metering section and a die head of the homodromous double-screw extruder are respectively set to 210 ℃, 225 ℃, 235 ℃, 240 ℃, and simultaneously the machine profile is vacuumized, and the vacuum degree is 0.06MPa.
940G of the high-flow ABS resin pellets obtained in the above steps, 10G of RQT-G-1 surface brightening agent, 40G of ethylene bis-stearylamine and 10G of 5093 universal color masterbatch are mixed in a high-speed mixer for 3min, and are melt extruded in a 3D printing consumable extrusion test line, wherein the extrusion temperature is set to 230 ℃, the screw speed is 110rpm, and a high-flow ABS resin wire with a diameter of 1.70mm and wide and suitable for 3D printing is prepared.
Example 4
The high-flow ABS resin suitable for 3D printing comprises the following components in parts by weight:
0.1 part of magnesium stearate, 0.7 part of ethylene butyl acrylate, 0.15 part of distearyl pentaerythritol diphosphite, 0.05 part of vulcanized distearyl dipropionate, 1003 parts of CBT, 36 parts of butadiene-styrene-acrylonitrile graft copolymer and 60 parts of styrene-acrylonitrile copolymer.
Wherein the mass ratio of butadiene to styrene to acrylonitrile is 59:22:19, the melt index of the styrene-acrylonitrile copolymer is 32.39g/10min under the condition of 10kg at 220 ℃, the N content is 6.6%, the bonded acrylonitrile content is 20%, and the number average molecular weight is 60000.
360g of high-impact butadiene-styrene-acrylonitrile terpolymer, 600g of high-flow styrene-acrylonitrile copolymer, 1g of magnesium stearate, 7g of ethylene butyl acrylate, 1.5g of distearyl pentaerythritol diphosphite, 0.5g of vulcanized dioctadecyl dipropionate and 30g of CBT100 are fully mixed in a high-speed mixer for 5min, extruded and granulated, cooled by water and cut into cylindrical products with phi 3mm multiplied by phi 3mm, thus obtaining high-flow ABS resin;
wherein, the temperatures of a machine profile conveying section, a plasticizing section, a metering section and a die head of the homodromous double-screw extruder are respectively set to 200 ℃, 215 ℃, 230 ℃, 240 ℃, and simultaneously the machine profile is vacuumized, and the vacuum degree is 0.06MPa.
950G of the high-flow ABS resin granules obtained in the steps are mixed with 10G of RQT-G-1 surface brightening agent, 30G of ethylene bis-stearylamine and 10G of 5093 universal color master in a high-speed mixer for 3min, and are subjected to melt extrusion in a 3D printing consumable extrusion test line, wherein the extrusion temperature is set to 230 ℃, the screw speed is set to 110rpm, and a high-flow ABS resin wire with the diameter of 1.70mm and wide and suitable for 3D printing is prepared.
The mass ratio of butadiene to styrene to acrylonitrile is changed between 52-60:22-30:12-19 by using a bulk polymerization method, so that the grafting rate of the copolymer obtained by the polybutadiene rubber particles is controlled to be 45-52%; meanwhile, the components of the styrene-acrylonitrile copolymer are regulated to reduce the polymerization degree of the styrene-acrylonitrile copolymer, so that the bonded acrylonitrile content is 20-25%, and the number average molecular weight is 60000-70000.
And, the performance indexes of the ABS resin wire rods prepared by the disclosures of examples 1 to 4 are as follows:
as can be seen from the table, the ABS wires prepared by the technical scheme of the invention have higher fluidity, and the melt index of the ABS wires is about 40g/10 min. Wherein the temperature of the Vicat softening point is obviously reduced due to the addition of the compatilizer CBT, and the Vicat temperature is gradually reduced due to the increase of the CBT; the melt index is not the same rule, but an irregular tendency of decreasing before increasing occurs, which is mainly caused by the different proportions of the butadiene-styrene-acrylonitrile graft terpolymer and the styrene-acrylonitrile copolymer selected in the examples, and the viscosity of the ABS resin is correspondingly increased with the increase of the butadiene-styrene-acrylonitrile graft terpolymer, so that the fluidity is reduced, but the influence of the terpolymer of the ABS resin has a better fluidity improving effect than that of the increase of the component of CBT.
Further, in FIG. 1, under the same composition ratio, the melt index graph of the ABS wire is obtained by singly changing the component percentage of the CBT, and the effect of improving the melt index and the flowability of the ABS is obviously shown by the graph that the CBT is selected.
Further, 3 tensile test pieces and curved and impact test pieces designed by using a 3D printing model were used to test the processability of the prepared high-flow ABS resin, and the printing was smooth and the pieces were complete, as shown in FIG. 2.
As shown in fig. 3, the impact section scanning electron micrograph of the 3D printed article of example 1 shows that the high flow ABS resin with the section is in the form of interlayer packing at an angle of 60 ° when the 3D printed article is prepared, and the impact section is in the form of close packing, so that the high flow ABS resin designed in example 1 can be suitably used for 3D printing.
The stretched section sem photograph of the 3D printed article of example 3 shown in fig. 4 was printed using a 90 ° angle. Not only a tight packed form but also a clear inter-layer resin packed texture was seen from the stretched section to verify that the 3D printing-suitable high-flow ABS resin designed in example 3 had good 3D printing practicality.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The high-flow ABS resin for 3D printing is characterized by mainly comprising the following components in parts by mass:
24-36 parts of butadiene-styrene-acrylonitrile graft copolymer, 60-72 parts of styrene-acrylonitrile copolymer, 0.05-0.2 part of lubricant, 0.3-0.7 part of plasticizing modifier, 0.1-0.2 part of antioxidant A, 0.03-0.05 part of antioxidant B and 1-5 parts of compatilizer.
2. The high flow ABS resin for 3D printing according to claim 1 wherein the lubricant is magnesium stearate and the plasticizing modifier is ethylene butyl acrylate or EBS vinyl bis stearamide;
the antioxidant A is distearyl pentaerythritol diphosphite or 2, 6-di-tert-butyl-4-cresol, and the antioxidant B is stearyl sulfuryl dipropionate, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate and dilauryl thiodipropionate;
the compatilizer is CBT 100.
3. A method for preparing the high-flow ABS resin for 3D printing according to claim 1, wherein the method comprises the following steps:
(1) Preparing a butadiene-styrene-acrylonitrile graft copolymer by adopting an emulsion polymerization grafting method, preparing a styrene-acrylonitrile copolymer by adopting bulk polymerization, and adjusting the proportion of a styrene monomer and an acrylonitrile monomer to ensure that the melt index of the styrene-acrylonitrile copolymer is more than 32g/10min under the condition of 220 ℃ and 10kg, the N content is more than or equal to 6.5%, the bonded acrylonitrile content is 20-25%, and the number average molecular weight is 60000-70000;
(2) Fully mixing the styrene-acrylonitrile copolymer prepared in the step (1), butadiene-styrene-acrylonitrile grafted copolymer, lubricant, plasticizing modifier, antioxidant A, antioxidant B and compatilizer in a high-speed mixer for 3-5min, adding the blend into a double-screw extruder for melt blending, extruding, granulating, cooling with water, and cutting into cylindrical products with the diameter of phi 3mm x phi 3mm to obtain high-flow ABS resin granules;
(3) Mixing the high-flow ABS resin granules with RQT-G-1 surface brightening agent, ethylene bis stearamide and 5093 universal color master batch in a high-speed mixer for 3-5min, and performing melt extrusion in a 3D printing consumable extrusion experimental line to obtain the high-flow ABS resin for 3D printing.
4. The method for preparing high-flow ABS resin for 3D printing according to claim 3, wherein the mass ratio of butadiene to styrene to acrylonitrile is 52-60:22-30:12-19, and the grafting rate of the butadiene-styrene-acrylonitrile copolymer is 45% -52%.
5. The method for preparing a high flow ABS resin for 3D printing according to claim 3, wherein the parameters of the twin screw extruder in the step (2) are set as follows:
the rotating speed of the screw is 210-250r/min; the temperature of the extruder is respectively set to be four parts of a simplified conveying section, a plasticizing section, a metering section and a die head temperature, wherein the temperature of the simplified conveying section, the plasticizing section, the metering section and the die head temperature are respectively set to be 190-210 ℃, 200-225 ℃, 210-240 ℃ and 215-240 ℃; simultaneously, the machine is vacuumized, and the vacuum degree is 0.06MPa and 0.01MPa.
6. The method for preparing high-flow ABS resin for 3D printing according to claim 3 or 5, wherein the mass portions of the components in the step (2) are as follows: 24-36 parts of butadiene-styrene-acrylonitrile graft copolymer, 60-72 parts of styrene-acrylonitrile copolymer, 0.05-0.2 part of magnesium stearate, 0.3-0.7 part of plasticizing modifier, 0.1-0.2 part of antioxidant A, 0.03-0.05 part of antioxidant B and 1-5 parts of compatilizer.
7. The method for preparing a high-flow ABS resin for 3D printing according to claim 3, wherein the extrusion temperature in the step (3) is 200-240 ℃, the screw rotation speed is 110-120rpm, and the high-flow ABS resin wire for 3D printing with the diameter of 1.70-1.75 mm is prepared.
8. The method for preparing high-flow ABS resin for 3D printing according to claim 3 or 7, wherein the mass portions of each component in the step (3) are as follows: 92-96 parts of high-fluidity ABS resin granules, 0.5-1.5 parts of RQT-G-1 surface brightening agent, 3-5 parts of ethylene bis stearamide and 0.5-1.5 parts of 5093 universal color masterbatch.
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| CN108752880A (en) * | 2018-06-20 | 2018-11-06 | 安徽江淮汽车集团股份有限公司 | A kind of PBT composite and preparation method thereof |
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