CN115260726B - High-gloss low-odor wear-resistant PC/ABS/PMMA alloy material and preparation method thereof - Google Patents

High-gloss low-odor wear-resistant PC/ABS/PMMA alloy material and preparation method thereof Download PDF

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CN115260726B
CN115260726B CN202110474395.9A CN202110474395A CN115260726B CN 115260726 B CN115260726 B CN 115260726B CN 202110474395 A CN202110474395 A CN 202110474395A CN 115260726 B CN115260726 B CN 115260726B
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alloy material
odor
pmma
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CN115260726A (en
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赵体鹏
万虎
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
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Abstract

The invention discloses a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw material components in parts by weight: 20-50 parts of PC, 5-20 parts of ABS, 5-40 parts of PMMA, 5-15 parts of nano ore crystals, 4-20 parts of UPE, 0.5-1 part of foaming agent, 0.5-2 parts of lubricant and 0.2-0.4 part of antioxidant, wherein the weight part ratio of PC to ABS satisfies that PC is less than or equal to 8:2; the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material is prepared by melt blending of the raw material components, and the foaming agent is heated and dispersed in the melt blending process to generate carbon dioxide. The invention does not simply carry out melt extrusion granulation on each component, but uses carbon dioxide generated in the melt blending process of the foaming agent as a supercritical fluid, thereby effectively reducing the melt viscosity of the system, enhancing interface interaction and improving compatibility, and obviously improving the surface finish and pearly luster defects of the alloy material; and the problem of large odor of the PC/ABS/PMMA alloy material is effectively solved through the synergistic effect of the foaming agent and the nano-ore crystals.

Description

High-gloss low-odor wear-resistant PC/ABS/PMMA alloy material and preparation method thereof
Technical Field
The invention belongs to the technical field of modified plastics, and particularly relates to a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material and a preparation method thereof.
Background
The PC/ABS composite material inherits the characteristics of high heat resistance, high impact and high dimensional stability of PC, high flow and low internal stress of ABS and the like, is a composite material with excellent comprehensive performance, and has wide application in the fields of electronic appliances, automobiles, machinery, communication and the like. But the surface hardness of PC/ABS is below 2B, and the abrasion resistance and scratch resistance are poor. Polymethyl methacrylate (PMMA) is a transparent polymer, the light transmittance of which is more than 90 percent, the surface hardness of which is more than 2H, and the wear resistance of which is extremely excellent, but the impact strength of which is lower, and is a brittle material. The PC/ABS/PMMA alloy prepared by blending PMMA, PC and ABS in a certain proportion can effectively improve the surface hardness of a system by introducing PMMA under the condition of retaining the high impact strength of the PC/ABS material, thereby effectively overcoming the defect of insufficient wear resistance of the PC/ABS alloy.
However, due to the difference of refractive indexes of PMMA and PC, if the compounding proportion is not properly selected, the interfacial compatibility of the PMMA and PC cannot be effectively solved, and after compounding, beaded patterns randomly appear on the surface of a corresponding workpiece, so that the uniformity of the appearance is affected. In addition, the plasticizing temperature of PC is higher than that of PMMA and ABS by more than 30 ℃, and in order to ensure effective plasticizing of PC, the high processing temperature of PC/ABS/PMMA ternary alloy can lead to degradation of PMMA and ABS to a certain extent, so that the prepared ternary alloy has high content of micromolecular volatile matters and high material smell.
Disclosure of Invention
In view of the above, the invention provides a PC/ABS/PMMA alloy material with high gloss and low odor and wear resistance, which effectively solves the problems of beading and large odor of the PC/ABS/PMMA alloy material.
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material comprises the following raw material components in parts by weight:
wherein the weight part ratio of PC to ABS satisfies PC to ABS is less than or equal to 8:2; the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material is prepared by melt blending of the raw material components, and the foaming agent is heated and dispersed in the melt blending process to generate carbon dioxide.
According to the invention, the PC/ABS/PMMA alloy is prepared by blending PMMA and PC/ABS, so that the surface hardness of the PC/ABS material can be effectively enhanced, and the wear resistance of the material is further improved. However, the present invention does not simply melt extrusion pelletize the components, because simply blending PMMA with PC/ABS tends to result in alloy articles having poor gloss properties, but rather incorporates supercritical foaming techniques through the use of blowing agents. Carbon dioxide generated in the melt blending process of the foaming agent serves as a supercritical fluid, so that the melt viscosity of PC, ABS, PMMA, UPE components can be effectively reduced, meanwhile, the interface interaction between the substrates is enhanced, the compatibility between resin materials is improved, and the surface smoothness and pearlescence defects of the alloy materials can be obviously improved. In addition, the foaming agent also has synergistic effect with the nano-ore crystals, and can effectively adsorb small molecular volatile matters generated in the processing process, thereby effectively solving the problem of large odor of the PC/ABS/PMMA alloy material.
The ultra-high molecular weight polyethylene (UPE) has extremely excellent wear resistance, impact resistance, corrosion resistance, self-lubrication and impact energy absorption, the wear resistance is 8 times of that of common carbon steel, the impact strength is 6 times of that of ABS, the self-lubrication performance is equivalent to that of polytetrafluoroethylene, and the invention compounds a small amount of UPE and PC/ABS/PMMA, thereby further improving the wear resistance and scratch resistance of the system. The lubricant has high thermal stability, high transparency and excellent dispersion performance, and the addition of the lubricant further solves the problem of uniformity of alloy materials. The PC/ABS/PMMA alloy material is prepared by melt blending, and the damage of the high-speed shearing action to the foaming agent is effectively reduced under the condition of full mixing.
By effectively combining the technical points, the PC/ABS/PMMA alloy material with high gloss, low odor and good wear resistance is prepared, and the alloy material can be widely used for preparing various plastic shell parts with the requirements of wear resistance, high mechanical property and the like.
Furthermore, the PC is bisphenol A type polycarbonate, is engineering plastic with excellent performance, is odorless and odorless, has the transparency of more than 85%, has the advantages of high heat distortion temperature, high dimensional stability, high impact strength and the like, and has wide application in the fields of optics, electronics, electrics, machinery and the like.
Further, the ABS is an acrylonitrile-butadiene-styrene terpolymer which has both hardness, rigidity and toughness, is a universal plastic with excellent amorphous comprehensive performance, is nontoxic and tasteless, can be molded in various processing modes, and has wide application in the fields of household appliances, automobiles, building materials and the like. The composite material prepared by blending the composite material and PC has the advantages of both the composite material and the PC, and mutually compensates the defects, so that the composite material is a composite material with extremely excellent comprehensive performance and very wide application.
Furthermore, PMMA is short for polymethyl methacrylate, commonly called organic glass, and the melting point is less than or equal to 3.5g/10min.
Further, the nano-ore crystal is prepared from sepiolite, attapulgite, diatomite and bentonite. Wherein nanometer lattices of the sea bubble soil and the attapulgite can adsorb toxic and harmful nanometer-level micromolecular polar substances such as formaldehyde, benzene, ammonia and the like in the air; the diatomite can adsorb micro-scale macromolecular air impurities, and also provide an adsorption channel for the nano ore crystals, so that the adsorption effect of the nano ore crystals is improved; the diatomite can obviously enhance the rigidity and strength of the product, the sedimentation volume reaches 95 percent, the heat resistance, wear resistance, ageing resistance and other performances of the product can be improved, the diatomite has the characteristics of wide sources, low price, large specific surface area and porous structure, the reinforcing effect of the filling material is achieved, and the consumption of the resin can be reduced and the cost is reduced because the porous structure adsorbs small molecules existing in the resin.
Further, the UPE is used as a toughening agent of the material and is ultra-high molecular weight polyethylene powder, and the density of the UPE is 0.93-0.95 g/cm 3 The grain diameter is 50-300 nm.
Further, the foaming agent is an endothermic closed-cell chemical nucleating foaming agent, the gas generated by heat dispersion is carbon dioxide, and the carbon dioxide content is 80-85 ml/gram.
Further, the lubricant is nano synthesized magnesium aluminum talcum and is of a powder structure, the magnesium aluminum ratio is 2:1, the average particle size is less than 80 mu m, the whiteness is 92, and the specific gravity is 2.1g/ml.
Further, the antioxidants include a primary antioxidant and a secondary antioxidant. Preferably, the primary antioxidants are hindered phenol antioxidants such as 1010, 1076, 245 and the like; and/or the auxiliary antioxidants are phosphite antioxidants such as 168, PEP36 and the like, which can inhibit degradation of PC, ABS and PMMA resins.
In addition, the preparation method of the PC/ABS/PMMA alloy material with high gloss and low odor and wear resistance comprises the following steps:
s1, drying PC, ABS, PMMA, and placing the nano-ore crystal in a baking oven at 150-200 ℃ to bake materials;
s2, weighing UPE, foaming agent, lubricant, antioxidant and nano ore crystals after the material drying treatment in the step S1 according to a proportion, and stirring and mixing to obtain activated powder resin;
s3, weighing PC, ABS, PMMA after the drying treatment in the step S1 and the activated powder resin obtained in the step S2 according to a proportion, and mixing to form a premix;
s4, adding the premix obtained in the step S3 into a double-screw extruder, and carrying out melt blending to obtain the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material.
Further, in the step S1, the drying temperature is 80-100 ℃ and the drying time is 3-6 hours; and/or the material drying time is 1-2 h.
Further, in step S2, the mixture is stirred and mixed for 3 to 10 minutes by a mixer.
Further, in step S3, the mixture is mixed for 3 to 6 minutes by a high-speed mixer.
Further, in the step S4, the heating temperature is 200-260 ℃, and the extrusion temperature of the machine head is 230-250 ℃; the rotation speed of the screw of the host machine is 200-400 rpm, and the feeding rotation speed is 25-35 rpm.
In addition, the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material provided by the invention is not particularly limited to a subsequent molding processing method, and a conventional molding process, such as injection molding, can be adopted.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material provided by the invention, the PC/ABS/PMMA alloy is prepared by blending PMMA with PC and ABS, so that the surface hardness of the PC/ABS material can be effectively enhanced, and the wear resistance of the material is further improved, but the poor glossiness performance of an alloy product is easily caused by simply blending PMMA with PC/ABS, the application of a foaming agent enhances the interface interaction between a matrix and the matrix, improves the compatibility between resin materials, and can obviously improve the surface finish of the alloy material;
2. according to the PC/ABS/PMMA alloy material with high gloss and low odor and wear resistance disclosed by the invention, the foaming agent and the nano ore crystals are synergistic in the extrusion process, so that the problem of large odor of the PC/ABS/PMMA alloy material is effectively solved, and the material is more environment-friendly and healthy;
3. according to the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material disclosed by the invention, through the addition of PMMA and UPE, the wear resistance of PC/ABS/PMMA is improved, secondary processing such as paint spraying and electroplating is reduced, the cost is reduced, and the energy is saved and the environment is protected;
4. the added lubricant has high thermal stability, high transparency, excellent dispersion performance and good weather resistance, further solves the problem of alloy material uniformity, and the prepared PC/ABS/PMMA alloy material with high gloss, low odor and good wear resistance can be widely used for preparing various plastic shell parts with wear resistance requirements.
Detailed Description
The present invention will be described in further detail with reference to specific examples for better understanding of the technical solution of the present invention by those skilled in the art.
Example 1
The embodiment provides a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw materials in parts by weight: 43.4 parts of PC, 18.6 parts of ABS, 20 parts of PMMA, 10 parts of nano-ore crystals, 6 parts of UPE, 0.5 part of heat-absorbing closed-cell chemical nucleating foaming agent, 1 part of lubricant, 0.2 part of primary antioxidant 1010 and 0.2 part of secondary antioxidant 168, wherein the PC/ABS ratio is about 7:3.
The preparation method of the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material comprises the following steps:
s1, drying PC, ABS, PMMA, namely drying PC for 4 hours at 90 ℃, and drying ABS and PMMA for 3 hours at 80 ℃; placing the nano ore crystal in a baking oven at 150 ℃ to bake for 2 hours;
s2, weighing UPE, foaming agent, lubricant, antioxidant and nano ore crystals subjected to material drying treatment in the step S1 according to a proportion, stirring and mixing in a mixer for 5 minutes to obtain activated powder resin, and taking out for later use;
s3, weighing PC, ABS, PMMA obtained after the drying treatment in the step S1 and the activated powder resin obtained in the step S2 according to a proportion, mixing for 4min in a high-speed mixer, and uniformly mixing to form a premix;
s4, adding the premix obtained in the step S3 into a double-screw extruder, wherein the temperatures of all the areas are 220, 240, 250, 240 and 240 ℃, the screw speed of a host machine is 300rpm, the feeding speed is 30rpm, and melting and blending to obtain the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material.
The preparation method of the high gloss low odor abrasion resistant PC/ABS/PMMA alloy materials in examples 2-6 is substantially the same as in example 1, except for the formulation.
Example 2
The embodiment provides a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw materials in parts by weight: 43.3 parts of PC, 10.8 parts of ABS, 20 parts of PMMA, 12 parts of nano-ore crystals, 12 parts of UPE, 0.5 part of heat-absorbing closed-cell chemical nucleating foaming agent, 1 part of lubricant, 0.2 part of primary antioxidant 1010 and 0.2 part of secondary antioxidant 168, wherein the PC/ABS ratio is about 8:2. The high gloss low odor wear resistant PC/ABS/PMMA alloy material differs from example 1 in that: the PC and the ABS are about 8:2, and the addition amount of partial raw materials such as UPE, nano-ore crystals and the like is improved.
Example 3
The embodiment provides a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw materials in parts by weight: 38.5 parts of PC, 9.6 parts of ABS, 30 parts of PMMA, 14 parts of nano-ore crystals, 6 parts of UPE, 0.5 part of heat-absorbing closed-cell chemical nucleating foaming agent, 1 part of lubricant, 0.2 part of primary antioxidant 1010 and 0.2 part of secondary antioxidant 168, wherein the PC/ABS ratio is about 8:2. The high gloss low odor wear resistant PC/ABS/PMMA alloy material differs from example 1 in that: PC and ABS are about 8:2, and the addition amount of partial raw materials such as PMMA and nano-ore crystals is increased.
Example 4
The embodiment provides a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw materials in parts by weight: 29.7 parts of PC, 7.4 parts of ABS, 40 parts of PMMA, 15 parts of nano ore crystals, 6 parts of UPE, 0.5 part of heat-absorbing closed-pore chemical nucleating foaming agent, 1 part of lubricant, 0.2 part of primary antioxidant 1010 and 0.2 part of secondary antioxidant 168, wherein the PC/ABS ratio is about 8:2. The high gloss low odor wear resistant PC/ABS/PMMA alloy material differs from example 1 in that: PC and ABS are about 8:2, and the addition amount of partial raw materials such as PMMA and nano-ore crystals is increased.
Example 5
The embodiment provides a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw materials in parts by weight: 20 parts of PC, 5 parts of ABS, 5 parts of PMMA, 5 parts of nano-ore crystals, 4 parts of UPE, 0.5 part of heat-absorbing closed-pore chemical nucleating foaming agent, 0.5 part of lubricant, 0.1 part of primary antioxidant 1010 and 0.1 part of secondary antioxidant 168, wherein the PC/ABS ratio is about 4:1.
Example 6
The embodiment provides a high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material, which comprises the following raw materials in parts by weight: 50 parts of PC, 20 parts of ABS, 40 parts of PMMA, 15 parts of nano ore crystals, 20 parts of UPE, 1 part of heat-absorbing closed-pore chemical nucleating foaming agent, 2 parts of lubricant, 0.2 part of primary antioxidant 1010 and 0.2 part of secondary antioxidant 168, wherein the PC/ABS ratio is about 5:2.
Comparative example 1
Compared with example 1, the comparative example has no PMMA, and the ABS ratio and other raw material ratios are the same as those of example 1, and the extrusion processing technology is similar to that of example 1.
Comparative example 2
Compared with example 1, the comparative example has no UPE, the proportion of PC to ABS and other raw materials are the same as example 1, and the extrusion processing technology is similar to that of example 1.
Comparative example 3
Compared with example 3, the comparative example has no foaming agent, the PC-ABS ratio and other raw material ratios are the same as those of example 3, and the extrusion processing technology is similar to that of example 3.
Comparative example 4
In this comparative example, the PC to ABS ratio was increased to 9:1 as compared with example 3, and the extrusion process was similar to example 3, except that the ratio was the same as in example 3.
The formulations of examples 1 to 4 and comparative examples 1 to 4 are shown in the following table.
Example 1 Example 2 Example 3 Example 4 Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4
PC 43.4 43.3 38.5 29.7 57.5 47.7 38.9 42.3
ABS 18.6 10.8 9.6 7.4 24.6 20.4 9.7 4.8
PMMA 20 20 30 40 0 20 30 30
Nano mineral crystal 10 12 14 15 10 10 14 14
UPE 6 12 6 6 6 0 6 6
Foaming agent 0.5 0.5 0.5 0.5 0.5 0.5 0 0.5
Lubricant 1 1 1 1 1 1 1 1
1010 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
168 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
The PC/ABS/PMMA alloy materials prepared in examples 1 to 4 and comparative examples 1 to 4 were sampled and tested, and the test results are shown in the following table.
Note that: abrasion resistance was tested according to ASTM D4060-01, VOC was tested according to VDA277, and odor rating was tested according to VDA 270. The appearance effect is mainly observed by naked eyes, the appearance is good, the bead light patterns are difficult to be observed by naked eyes, the appearance is good, the bead light patterns are small, the appearance is poor, and the pearl light patterns are obvious to the naked eyes.
As can be seen from the comparison of the comparative example 1 and the example 1, the PMMA can effectively enhance the surface hardness of the PC/ABS material, thereby improving the wear resistance of the material; it can also be seen from examples 1, 3 and 4 that within a certain range the wear resistance of the material gradually increases with increasing PMMA content. It can be seen from comparison of comparative example 2 with example 1 that the addition of UPE can improve the wear resistance of the material. By comparing the comparative example 3 with the example 3, the addition of the foaming agent enhances the interface interaction between the substrates, improves the compatibility of PC, ABS, PMMA plastic materials, can obviously improve the surface finish of the alloy materials and the bead patterns of the alloy materials, and can effectively improve the problem of large odor of PC/ABS/PMMA alloy materials due to the synergistic effect of the gas generated by the foaming agent and nano ore crystals. As is clear from comparative example 4 and examples 1 and 3, in the PC/ABS/PMMA alloy material, when PC: ABS is less than or equal to 8:2, the surface effect of the material is good, no obvious pearlescing lines appear, and when the ratio of PC to ABS is continuously increased, the appearance effect of the material is reduced, and the pearlescing lines appear on the surface.
Therefore, the invention ensures that the PC/ABS/PMMA alloy material prepared by generating carbon dioxide serving as a supercritical fluid and selecting the compounding proportion of each resin in the melt blending process of the foaming agent has high gloss; the prepared PC/ABS/PMMA alloy material has low odor through the synergistic effect of the foaming agent and the nano-ore crystals; the PC/ABS/PMMA alloy material prepared by the method is wear-resistant by adding PMMA and UPE, and the technical points are buckled and closely combined, so that the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material is prepared. The preparation method is simple, and other treatment means such as ultrasonic waves are not required to be combined.
In addition, in addition to the raw material components specifically selected in the embodiment, the main antioxidant in the formula of the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material can be selected from hindered phenol antioxidants such as 1076 and 245, and the auxiliary antioxidant can be selected from phosphite antioxidants such as PEP 36.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. The high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material is characterized by comprising the following raw material components in parts by weight:
PC20-50 parts
ABS5-20 parts
PMMA5-40 parts
5-15 parts of nano mineral crystal
UPE4-20 parts
0.5-1 part of foaming agent
0.5-2 parts of lubricant
0.2 to 0.4 part of antioxidant
Wherein the weight part ratio of PC to ABS satisfies PC to ABS is less than or equal to 8:2; the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material is prepared by melt blending of the raw material components, and the foaming agent is heated and dispersed in the melt blending process to generate carbon dioxide.
2. The high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material according to claim 1, wherein the carbon dioxide content generated by the thermal dispersion of the foaming agent is 80-85 ml/gram.
3. The high gloss low odor abrasion resistant PC/ABS/PMMA alloy material of claim 2 wherein the foaming agent is an endothermic closed cell chemical nucleation foaming agent.
4. The high gloss low odor wear resistant PC/ABS/PMMA alloy material of claim 1 wherein the PC is bisphenol a polycarbonate; and/or the nano ore crystal is prepared from sepiolite, attapulgite, diatomite and bentonite; and/or the UPE is ultra-high molecular weight polyethylene powder with the density of 0.93-0.95 g/cm 3 The grain diameter is 50-300 nm.
5. The high gloss low odor wear resistant PC/ABS/PMMA alloy material of claim 1 wherein the lubricant is a nano synthetic magnesium aluminum talc.
6. The high gloss low odor abrasion resistant PC/ABS/PMMA alloy material of claim 5 wherein the magnesium aluminum talc has a magnesium aluminum ratio of 2:1, an average particle size <80 μm, a whiteness of 92 and a specific gravity of 2.1g/ml.
7. The high gloss low odor wear resistant PC/ABS/PMMA alloy material of claim 1 wherein the antioxidant comprises a primary antioxidant, the primary antioxidant being a hindered phenolic antioxidant; and/or the antioxidant comprises an auxiliary antioxidant, wherein the auxiliary antioxidant is phosphite antioxidant.
8. A method for preparing the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material according to any one of claims 1 to 7, comprising the steps of:
s1, drying PC, ABS, PMMA, and placing the nano-ore crystal in a baking oven at 150-200 ℃ to bake materials;
s2, weighing UPE, foaming agent, lubricant, antioxidant and nano ore crystals after the material drying treatment in the step S1 according to a proportion, and stirring and mixing to obtain activated powder resin;
s3, weighing PC, ABS, PMMA after the drying treatment in the step S1 and the activated powder resin obtained in the step S2 according to a proportion, and mixing to form a premix;
s4, adding the premix obtained in the step S3 into a double-screw extruder, and carrying out melt blending to obtain the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material.
9. The method for preparing the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material according to claim 8, wherein in the step S1, the drying temperature is 80-100 ℃ and the drying time is 3-6 h; and/or the material drying time is 1-2 h.
10. The method for preparing the high-gloss low-odor wear-resistant PC/ABS/PMMA alloy material according to claim 8, wherein in the step S4, the heating temperature is 200-260 ℃, and the extrusion temperature of a machine head is 230-250 ℃; the rotation speed of the screw of the host machine is 200-400 rpm, and the feeding rotation speed is 25-35 rpm.
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