阅读说明：本技术 高热氧稳定性高耐热免喷涂pmma/asa合金树脂组合物及制备方法 (High-thermal-oxygen-stability high-heat-resistance spraying-free PMMA/ASA alloy resin composition and preparation method thereof ) 是由 汤俊杰 纪永鹏 史鹏伟 司胜仁 段浩 朱从山 于 2021-07-21 设计创作，主要内容包括：本发明涉及一种高热氧稳定性高耐热免喷涂PMMA/ASA合金树脂组合物及制备方法。所述合金包括：聚甲基丙烯酸甲酯(PMMA)树脂30-60份,丙烯腈-苯乙烯-丙烯酸酯(ASA)树脂30-50份,耐热性相容剂5-20份,黑色母0.5-2.0份,抗氧剂0.2-1.0份,润滑剂0.2-1.0份,耐候剂0.2-1.0份。其制备方法为：按上述组分含量混合均匀,得到预混料,将预混料加入双螺杆挤出机中,熔融挤出,冷却造粒,即可。与现有技术相比,本发明制备的PMMA/ASA合金数值组合物具有优异的热氧稳定性、耐热温度和表面光泽度,而且具有制备过程简单,成本低等优点,可用于使用条件苛刻的免喷涂器件上。(The invention relates to a high-thermal-oxygen-stability high-heat-resistance spraying-free PMMA/ASA alloy resin composition and a preparation method thereof. The alloy comprises: 30-60 parts of polymethyl methacrylate (PMMA) resin, 30-50 parts of acrylonitrile-styrene-acrylate (ASA) resin, 5-20 parts of heat-resistant compatilizer, 0.5-2.0 parts of black master batch, 0.2-1.0 part of antioxidant, 0.2-1.0 part of lubricant and 0.2-1.0 part of weather-resistant agent. The preparation method comprises the following steps: and uniformly mixing the components according to the content to obtain a premix, adding the premix into a double-screw extruder, carrying out melt extrusion, and cooling and granulating to obtain the composite material. Compared with the prior art, the PMMA/ASA alloy numerical composition prepared by the invention has excellent thermal-oxidative stability, heat-resisting temperature and surface gloss, has the advantages of simple preparation process, low cost and the like, and can be used for spray-free devices with harsh use conditions.)

1. A PMMA/ASA alloy resin composition is characterized by comprising the following components in percentage by mass of the total composition:

2. the PMMA/ASA alloy resin composition as claimed in claim 1, wherein the PMMA resin has a weight average relative molecular mass of 30000-150000 g/mol.

3. The PMMA/ASA alloy resin composition as claimed in claim 1, wherein the weight average relative molecular mass of the ASA resin is 80000-600000 g/mol, and the gum content is 35-75%.

4. The PMMA/ASA alloy resin composition as claimed in claim 1, wherein the heat-resistant compatibilizer comprises a functionalized styrene polymer, the functionalized styrene polymer comprises one or a composite of two of styrene-methyl methacrylate-maleic anhydride terpolymer and styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer; in the styrene-methyl methacrylate-maleic anhydride terpolymer: based on the total mass percentage of the terpolymer, the maleic anhydride accounts for 12-25 percent, and the methyl methacrylate accounts for 10-25 percent; in the styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer: based on the total mass percentage of the quadripolymer, the maleic anhydride accounts for 7 to 13 percent, the N-phenylmaleimide accounts for 10 to 18 percent, and the methyl methacrylate accounts for 15 to 25 percent.

5. The PMMA/ASA alloy resin composition as claimed in claim 1, wherein the black masterbatch takes styrene-acrylonitrile copolymer as a carrier, and carbon black with mass fraction of 40% -60% is added according to the mass percentage of the black masterbatch to be mixed, extruded and granulated to prepare the PMMA/ASA alloy resin composition.

6. The PMMA/ASA alloy resin composition as claimed in claim 5, wherein the weight average relative molecular mass of the styrene-acrylonitrile copolymer is 30000-70000 g/mol, and the residual amount of acrylonitrile is less than 10 ppm.

7. The PMMA/ASA alloy resin composition of claim 1, wherein the lubricant comprises one or more of fatty acid soap salts, silicones, pentaerythritol stearate; the fatty acid soap salts comprise calcium stearate, zinc stearate, ethylene bis-fatty acid amide and modified ethylene bis-fatty acid amide.

8. The PMMA/ASA alloy resin composition of claim 1, wherein the antioxidant comprises one or more of hindered phenol antioxidants, phosphite antioxidants and thioether antioxidants.

9. The PMMA/ASA alloy resin composition of claim 1, wherein the weather resistant agent comprises one or more of benzophenone, benzotriazole, salicylate, benzoate, cyanoacrylate, nickel-containing compound, hindered amine.

10. A method for preparing the PMMA/ASA alloy resin composition according to any one of claims 1 to 9, wherein the method comprises the steps of:

s1, uniformly mixing PMMA resin, ASA resin, heat-resistant compatilizer, black master, antioxidant, lubricant and weather-resistant agent in proportion to obtain a premix;

s2, adding the premix through the main feeding port of the double-screw extruder, and performing melt mixing, extrusion, water cooling and granulation to obtain the premix; the double-screw extruder is a co-rotating double-screw extruder, and the length-diameter ratio is 36: 1-56: 1, the processing temperature of the extruder is between 180 ℃ and 260 ℃, and the rotating speed is 180 rpm and 600 rpm.

Technical Field

The invention belongs to the field of modification of high polymer materials, and relates to a high-thermal-oxidative-stability high-heat-resistance spraying-free PMMA/ASA alloy resin composition and a preparation method thereof.

Background

Polymethyl methacrylate (PMMA) resin, also known as organic glass, has excellent optical properties, transmittance up to 92%, excellent mechanical strength, good thermal and acoustic insulation, good weather resistance, high gloss, strong tinting strength and scratch resistance, and has wide applications in the automotive industry due to the remarkable characteristics. The ASA resin is a terpolymer of acrylonitrile, styrene and acrylic ester, and has no unsaturated double bond in the structure, so the weather resistance of the ASA resin is far better than that of the traditional ABS resin. In addition, ASA resins also have good impact resistance, colorability and chemical resistance. ASA resin is widely applied to automobiles and is mainly applied to external decorative parts such as grids, triangular blocks, upright post plates and the like. Generally, automobile exterior parts need high light effect, the effect is difficult to realize through direct injection molding process, a spraying process is generally needed, and the spraying process not only increases the cost, but also causes serious pollution to the environment. Therefore, under the background that the national advocates green and environment-friendly, the carbon neutralization and the carbon peak reaching are realized according to the period, the development and design of the material which realizes the application of the direct injection molding part by the post-processing technology such as spraying-free technology and the like have important significance.

But the compatibility of PMMA and ASA is poor, so that the comprehensive mechanical property of PMMA and ASA is difficult to meet the requirements of the automobile field; moreover, the heat resistance of the PMMA/ASA alloy which is prepared usually is not high, or the PMMA/ASA alloy can not meet the requirement that the material can still keep excellent appearance under the use state of long-term high temperature or strong sunlight irradiation.

Chinese patent CN105419205A discloses a preparation method of a high-gloss spray-free PMMA/ASA alloy resin, but the requirement of high heat resistance of the product is not mentioned, and the product cannot be applied to the environment with higher heat resistance requirement. Chinese patent CN106832723A discloses a high heat-resistant and high weather-resistant ASA/PMMA composite material and a preparation method thereof, which solve the problems of heat resistance and weather resistance of the material, but do not mention the problem of whether the surface of a product has defects in a high-thermal-oxygen environment.

Disclosure of Invention

The invention aims to provide a high-thermal-oxygen-stability high-heat-resistance spraying-free PMMA/ASA alloy resin composition and a preparation method thereof aiming at the defects of the prior art.

The high-thermal-oxidative-stability high-heat-resistance spraying-free PMMA/ASA alloy resin material provided by the invention has excellent high-thermal-oxidative stability, heat resistance, high surface gloss and excellent comprehensive performance, can effectively expand the application range of the material, and particularly has good application prospect in the field of new energy automobiles.

The invention prepares the styrene-methyl methacrylate-maleic anhydride terpolymer and the styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride quadripolymer with the optimal monomer proportion as the heat-resistant compatilizer through formula optimization, through single or compound use, the PMMA/ASA alloy compatilizer not only plays a role of a PMMA/ASA alloy compatilizer, but also can obviously improve the heat-resistant temperature and the thermo-oxidative stability of the alloy material, in addition, the styrene-acrylonitrile copolymer with proper molecular weight is preferably used as a carrier of the black master batch, so that the better dispersion of the black pigment in the alloy resin matrix is promoted, the compatibility of the black master batch and the resin matrix is improved, the appearance defects of silver wires and the like on the surface of the material are reduced, provides support for the production of PMMA/ASA alloy products with a "black and bright" appearance.

The purpose of the invention is realized by the following technology:

in one aspect, the invention relates to a PMMA/ASA alloy resin composition, which comprises the following components by mass percent:

the alloy resin composition is a high-thermal-oxygen-stability high-heat-resistance spray-free PMMA/ASA alloy resin composition.

As an embodiment of the present invention, the PMMA resin has a weight average relative molecular mass of 30000-150000 g/mol.

As an embodiment of the invention, the weight average relative molecular mass of the ASA resin is between 80000 and 600000g/mol, and the gum content is between 35 and 75 percent.

As one embodiment of the present invention, the heat-resistant compatibilizer includes a functionalized styrenic polymer. The functionalized styrene polymer comprises one or a compound of two of styrene-methyl methacrylate-maleic anhydride terpolymer and styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer. In the styrene-methyl methacrylate-maleic anhydride terpolymer: based on the total mass percentage of the terpolymer, the maleic anhydride accounts for 12-25 percent, and the methyl methacrylate accounts for 10-25 percent. In the styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer: based on the total mass percentage of the quadripolymer, the maleic anhydride accounts for 7 to 13 percent, the N-phenylmaleimide accounts for 10 to 18 percent, and the methyl methacrylate accounts for 15 to 25 percent.

The invention selects quadripolymer, wherein maleic anhydride accounts for 7-13%, N-phenylmaleimide accounts for 10-18%, and methyl methacrylate accounts for 15-25%. If the content of the maleic anhydride is less than 7 percent, the heat resistance of the alloy system can be improved to a limited extent, and the ideal effect cannot be achieved; if the content of maleic anhydride is more than 13%, the compatibility of the alloy may be adversely affected; if the content of the N-phenylmaleimide is less than 10%, the heat resistance of the alloy system is affected; if the content of N-phenylmaleimide is greater than 18%, the preparation of the tetrapolymer may be affected; if the content of the methyl methacrylate is less than 15 percent, the improvement on the compatibilization effect of the PMMA/ASA alloy is limited; if the content of methyl methacrylate is more than 25%, the preparation of the tetrapolymer may be affected.

As an embodiment of the present invention, the heat-resistant type compatibilizer is a composite of a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer, a styrene-methyl methacrylate-maleic anhydride terpolymer, and a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer.

As an embodiment of the present invention, the heat-resistant compatibilizer is a composite of a styrene-methyl methacrylate-maleic anhydride terpolymer and a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer.

In one embodiment of the present invention, the styrene-methyl methacrylate-maleic anhydride terpolymer and the styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer are in a proportion of 30% to 70% by weight of the total weight of the composite.

As an embodiment of the invention, the black master batch takes styrene-acrylonitrile copolymer as a carrier, and is prepared by adding 40-60% of carbon black by mass percent of the black master batch, mixing, extruding and granulating.

The black master batch selected by the invention can generate better compatibility with matrix resin, can be filled with more black pigment, ensures that the black master batch plays a better dispersion effect in the resin, and reduces appearance defects of materials, such as silver wires, pockmarks and the like.

As an embodiment of the invention, the weight average relative molecular mass of the styrene-acrylonitrile copolymer is 30000-70000 g/mol, and the residual amount of acrylonitrile is less than 10 ppm.

As an embodiment of the invention, the lubricant comprises a combination of one or more of fatty acid soaps, silicones, pentaerythritol stearate; the fatty acid soap salts comprise calcium stearate, zinc stearate, ethylene bis-fatty acid amide and modified ethylene bis-fatty acid amide.

As an embodiment of the present invention, the antioxidant includes one or more of hindered phenol type antioxidants, phosphite type antioxidants, thioether type antioxidants.

As an embodiment of the present invention, the weather resistant agent includes one or more of benzophenone, benzotriazole, salicylate, benzoate, cyanoacrylate, nickel-containing compound, hindered amine.

In another aspect, the invention also relates to a preparation method of the high-thermal-oxygen-stability high-heat-resistance spray-free PMMA/ASA alloy resin composition, which comprises the following steps:

s1, uniformly mixing PMMA resin, ASA resin, heat-resistant compatilizer, black master, antioxidant, lubricant and weather-resistant agent in proportion to obtain a premix;

s2, adding the premix through a main feeding port of a double-screw extruder, and performing melt mixing, extrusion, water cooling and granulation, wherein the double-screw extruder is a co-rotating double-screw extruder, and the length-diameter ratio is 36: 1-56: 1, the processing temperature of the extruder is between 180 ℃ and 260 ℃, and the rotating speed is 180 rpm and 600 rpm.

Compared with the prior art, the invention has the following beneficial effects:

1) the invention adopts the novel heat-resistant compatilizer, and through the introduction of high-content maleic anhydride and N-phenyl maleimide, the compatibility of the alloy material can be effectively improved, the interfacial tension can be reduced, and more importantly, the heat-resistant temperature and the thermo-oxidative stability of the material can be greatly improved;

2) the black master batch used in the invention adopts low-residue styrene-acrylonitrile copolymer with specific molecular weight as a carrier, which not only can keep enough compatibility with matrix resin, but also has proper molecular weight, so that the black master batch can realize uniform dispersion effect of black pigment in the final material while ensuring enough filling amount of the black powder, and greatly reduce the appearance of silver wires, pockmarks and the like of the material;

3) the alloy material has the appearance effect of piano black, and particularly has the characteristics of high thermal oxygen stability, high heat resistance and no spraying. The method has simple and convenient process, easy operation and low investment cost, and the product prepared by the method can be widely used in the fields of automobile interior and exterior trimming parts and the like, can also be used in the related fields of household appliances, aviation, 5G and the like, and has very wide application prospect and industrial value;

4) the PMMA/ASA alloy has the characteristics of high thermo-oxidative stability and high heat resistance, has higher surface glossiness, can better widen the application range of PMMA/ASA alloy materials, and has better application prospect.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

The quadripolymers of styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride related to all the examples and comparative examples of the invention are polymerized by a bulk method, and are extruded and granulated to obtain columnar granular products, and the molecular structure schematic diagram of the columnar granular products is as follows:

wherein x ranges from 10 to 1000; y ranges from 10 to 1000; m ranges from 10 to 500 and n ranges from 10 to 500.

Example 1

55 parts of PMMA resin (brand: CM211, Qimei company), 40 parts of ASA resin (brand: XC500, Jinhu petrochemical company), 5 parts of heat-resistant compatilizer, 5 parts of styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer (wherein the content of maleic anhydride is 7%, the content of N-phenylmaleimide is 15% and the content of methyl methacrylate is 18%), 2 parts of black master (EMI-100 of Jiayifu polymer (Shanghai) Limited company serving as a carrier, the relative molecular mass is 40000, the residual quantity of acrylonitrile is 3ppm, the filling quantity of carbon black is 60%), 0.3 part of antioxidant (168/1010), 0.4 part of lubricant (silicone) and 0.5 part of weather-resistant agent 2-hydroxy-4 methoxy benzophenone, wherein the length-diameter ratio of the raw materials after being uniformly mixed is 40: the processing temperature in the extruder of 1 is 200-.

Example 2

60 parts of PMMA resin (brand: CM205, Qimei company), 30 parts of ASA resin (brand: 600N, Japan UMG company), 15 parts of styrene-methyl methacrylate-maleic anhydride terpolymer (wherein the content of maleic anhydride is 18 percent, the content of methyl methacrylate is 20 percent, the brand: BP-356M, good easy-to-dissolve polymer (Shanghai) company Limited) as a heat-resistant compatilizer, 1.2 parts of black master (SAN resin with the relative molecular mass of 70000 as a carrier, the residual quantity of acrylonitrile is 12ppm, the filling quantity of carbon black is 40 percent), 1.0 part of antioxidant (168/1076), 1.0 part of lubricant (PETS) and 0.2 part of weather-resistant agent phenyl salicylate, wherein the raw materials are uniformly mixed and then put into a mixer with the length-diameter ratio of 56: 1, the processing temperature is 180-.

Example 3

30 parts of PMMA resin (trademark: MF001, Mitsubishi Yang company), 50 parts of ASA resin (trademark: 776S, Korea benzene Co., Ltd.), and a heat-resistant compatibilizer which is a mixture of a styrene-methyl methacrylate-maleic anhydride terpolymer (in which the content of maleic anhydride is 12% and the content of methyl methacrylate is 25%) and a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer (in which the content of maleic anhydride is 13%, the content of N-phenylmaleimide is 18% and the content of methyl methacrylate is 15%), wherein the mixture of the terpolymer and the tetrapolymer is 20 parts, wherein the proportion of the terpolymer is 30%, that is, the usage amount of the terpolymer and the tetrapolymer are respectively 6 parts and 14 parts, and black master (SAN resin with the relative molecular mass of 50000 is used as a carrier, acrylonitrile residue of 5ppm, carbon black loading of 50%), 0.5 parts of antioxidant, 0.4 parts of lubricant, and 1.0 part of weather resistant agent 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-butyl) benzotriazole, wherein the raw materials are mixed uniformly and then put into a container with a length-diameter ratio of 36: the processing temperature in the extruder of 1 is 220-.

Example 4

Slightly different from example 1, 10 parts of a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer (in which the maleic anhydride content was 13%, the N-phenylmaleimide content was 10%, and the methyl methacrylate content was 25%) was used as a heat-resistant compatibilizer, and the remainder was the same as in example 1.

Example 5

Slightly different from example 2, the heat-resistant compatibilizer was 15 parts of a styrene-methyl methacrylate-maleic anhydride terpolymer (in which the content of maleic anhydride was 25% and the content of methyl methacrylate was 10%), and the remainder was the same as example 2.

Example 6

Slightly different from example 3, the heat-resistant compatibilizer was a mixture of a styrene-methyl methacrylate-maleic anhydride terpolymer in which the content of maleic anhydride was 12% and the content of methyl methacrylate was 20% and a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer in which the content of maleic anhydride was 7%, the content of N-phenylmaleimide was 18% and the content of methyl methacrylate was 22%, the mixture of the terpolymer and the tetrapolymer was 20 parts, wherein the proportion of the terpolymer was 70%, i.e., the terpolymers and tetrapolymers were used in 14 parts and 6 parts, respectively, and the remainder was the same as example 3.

Example 7

This example is different from example 5 only in that 15 parts of a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer (in which the maleic anhydride content is 13%, the methyl methacrylate content is 10%, and the N-phenylmaleimide content is 15%) was used as a heat-resistant compatibilizer, and the remainder was the same as example 5.

Example 8

This example differs from example 7 only in that the heat resistant compatibilizer was a composite of a styrene-methyl methacrylate-maleic anhydride terpolymer in which the maleic anhydride content was 25% and the methyl methacrylate content was 10% and a styrene-methyl methacrylate-N-phenylmaleimide-maleic anhydride tetrapolymer in which the maleic anhydride content was 13%, the methyl methacrylate content was 10% and the N-phenylmaleimide content was 15% in 15 parts, in which the styrene-methyl methacrylate-maleic anhydride terpolymer was present in a proportion of 50%, i.e., 7.5 parts each, and the remainder was the same as in example 7.

Comparative example 1

According to the method disclosed in patent CN106832723A, the following components are weighed according to the mixture ratio of patent example 1: 40 parts of PMMA resin (MF001, Mitsubishi yang), 48.4 parts of ASA resin (Japan UMG company), 5 parts of heat-resistant modifier (MS-NB, Japan electric chemistry), 3 parts of compatilizer (SAM-020, good easy), 2 parts of carbon black (660R, cabot), 0.3 part of light stabilizer (770, Ciba company), 0.3 part of ultraviolet absorber (UV326, Ciba company), 0.5 part of antioxidant (1010: 168 ═ 1: 1), 0.5 part of PETS lubricant, extruding and granulating to obtain a sample, drying the particles, injection molding to obtain a sample strip, and testing.

Comparative example 2

The basic formulation of the composition is the same as that of example 1, except that a styrene-maleic anhydride copolymer is used as a compatibilizer, the content of maleic anhydride is about 23% (trademark SMA23110, Polyscope company, Netherlands), the addition amount is 5 parts, and the balance is the same as that of example 1.

Comparative example 3

The basic formulation of example 2 was followed, with the exception that AN MMA-SAN copolymer was used as the compatibilizer, wherein the MMA/S/AN ratio was (48/27/25) and the amount added was 15 parts, and the balance was the same as in example 2.

Comparative example 4

The basic formula is the same as that of the example 1, but the black master batch adopts polyethylene wax as a carrier, the toner filling amount is 60 percent, the addition amount is 2 parts, and the rest is the same as that of the example 1.

Comparative example 5

The comparative example is different from example 8 only in that the styrene-methyl methacrylate-maleic anhydride terpolymer is 20% in proportion.

Comparative example 6

The comparative example is different from example 8 only in that the terpolymer of styrene-methyl methacrylate-maleic anhydride was 80% in proportion.

Performance testing

Tensile strength: testing according to ISO 527 standard, wherein the testing speed is 50 mm/min;

flexural modulus: testing according to ISO 178 standard with testing speed of 2 mm/min;

charpy notched impact strength: the impact energy is 4J according to the test of ISO 179-1 standard;

gloss: the test angle is 60 degrees according to the test of ASTM D2457;

vicat softening point: testing according to ISO 306 standard under the test condition of 5Kg and 50 ℃/h;

and (3) testing the thermal oxygen resistance stability: the plastic pellets of each example and comparative example were left in an injection molding machine at 250 ℃ for 10min, and a sample was injection-molded, and the surface state of the sample was observed.

The PMMA/ASA alloy materials prepared in examples 1-8 and comparative examples 1-6 were tested using the test conditions and standards as described above, and the results are shown in Table 1:

table 1 performance test data

According to the test results in table 1, after the heat-resistant compatilizer is introduced, the comprehensive performance of the alloy resin system is obviously improved, especially the aging resistance and the heat resistance. In addition, comparing examples 1-8 with comparative examples 1-6, the comprehensive performance of PMMA/ASA alloy resin prepared by adopting the novel heat-resistant compatilizer of the invention is superior to the compatilizer or heat-resistant agent used in the comparative examples no matter the toughness, heat-resistant effect and sample strip condition after thermal-oxidative aging, especially the effect is better after selecting the heat-resistant compatilizer of the quadripolymer or the heat-resistant compatilizer of the ternary and quadripolymer compounded according to a certain proportion; in addition, the black master batch used in the comparative example 4 takes polyethylene wax as a carrier, the compatibility of the polyethylene wax with matrix resin and other components has a problem, a large amount of silver wire defects exist on the surface of a sample after the sample is kept in an injection molding machine at high temperature, and the application of the silver wire defects is limited, and in the examples, SAN resin which has better compatibility with the matrix resin, low residue and specific molecular weight is adopted as the matrix, so that the compatibility problem is solved, the black toner can be better dispersed in a material system, and even after high-temperature aging, the surface of the sample still has luster as before, and the high-luster effect of black piano is presented, so that the resin composition is very suitable for the environment with harsh use conditions.

In conclusion, the invention adopts a blending modification technical means to blend PMMA and ASA resin, introduces a unique heat-resistant compatilizer to improve the compatibility of PMMA and ASA resin and improve the heat resistance of materials, and selects the black master batch prepared by a carrier with better compatibility with matrix resin, thereby preparing the PMMA/ASA alloy resin composition with toughness, rigidity, heat resistance, thermo-oxidative aging resistance and high gloss.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.