CN114163797B - Yellow polycarbonate/styrene resin alloy composition and preparation method and application thereof - Google Patents
Yellow polycarbonate/styrene resin alloy composition and preparation method and application thereof Download PDFInfo
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- CN114163797B CN114163797B CN202111210866.1A CN202111210866A CN114163797B CN 114163797 B CN114163797 B CN 114163797B CN 202111210866 A CN202111210866 A CN 202111210866A CN 114163797 B CN114163797 B CN 114163797B
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
The invention provides a yellow polycarbonate/styrene resin alloy composition, and a preparation method and application thereof. The yellow polycarbonate/styrene resin alloy composition comprises polycarbonate resin, styrene resin, an antioxidant, a light stabilizer and yellow toner; the yellow toner includes bismuth vanadate and azo yellow; the mass ratio of the bismuth vanadate to the azo yellow is 3.8-4.2: 1. the yellow polycarbonate/styrene resin alloy composition can obtain yellow toner with the same coloring capacity as that of quinopeptide flavone through compounding bismuth vanadate and azo yellow in a certain proportion, and the prepared plastic product has strong heat resistance and weather resistance.
Description
Technical Field
The invention relates to the field of engineering plastics, in particular to a yellow polycarbonate/styrene resin alloy composition, a preparation method and application thereof.
Background
The polycarbonate/styrene resin alloy is a high-performance alloy material, integrates the advantages of each component resin, is widely used in the industries of automobile industry, electronic and electric industry, light industry household appliances, electric tools and the like by virtue of the excellent comprehensive performance, and belongs to engineering plastics with very wide application. However, with the development of society, there is a demand for not only material properties but also appearance such as color. Different colors are given to the material, so that the plastic part is more beautiful, and meanwhile, different colors can distinguish different purposes of the plastic part. Yellow is widely used as a relatively striking and beautiful color in plastic parts.
In order to obtain yellow polycarbonate or polycarbonate/styrene resin alloy materials, quinophthalone yellow is generally adopted as yellow toner, for example, in the prior art (CN 109810410A), although the quinophthalone yellow has higher yellow phase tinting strength, the quinophthalone yellow is unstable in structure and poor in heat resistance and weather resistance, and a chromophoric group is easy to change to cause color change; aiming at poor heat resistance, in order to reduce the influence of high temperature on quinophthalone yellow during production, the current method is to reduce extrusion temperature during preparation as much as possible and reduce screw rotation speed, but the mode makes the preparation process approach to the limit, so that the production is inconvenient; in view of the poor weather resistance, the problem that even if a light stabilizer or a weather resistant agent is added into a polycarbonate/styrene resin alloy material, the weather resistance of quinophthalone yellow is not obviously improved, and the yellow polycarbonate/styrene resin alloy cannot be well used for plastic parts needing to be in an outdoor environment for a long time, so that the application of the yellow polycarbonate/styrene resin alloy material is limited. In view of this, the prior art discloses attempts to make other yellow pigments which are better in heat and weather resistance, but which are inferior in tinting strength, far lower than that of quinophthalone yellow.
Disclosure of Invention
The invention provides a yellow polycarbonate/styrene resin alloy composition, which has better yellow color phase tinting strength, heat resistance and weather resistance in order to overcome the defect of poor heat resistance and weather resistance of the yellow polycarbonate/styrene resin alloy material in the prior art.
It is another object of the present invention to provide a method for preparing the yellow polycarbonate/styrene resin alloy composition.
It is another object of the present invention to provide the use of the yellow polycarbonate/styrenic resin alloy composition.
It is another object of the present invention to provide a polycarbonate article.
In order to solve the technical problems, the invention adopts the following technical scheme:
the yellow polycarbonate/styrene resin alloy composition comprises the following components in parts by weight:
the yellow toner includes bismuth vanadate and azo yellow; the mass ratio of the bismuth vanadate to the azo yellow is 3.8-4.2: 1.
through researches, the prepared yellow polycarbonate/styrene resin alloy composition has better yellow color phase tinting strength, heat resistance and weather resistance by adopting bismuth vanadate and azo yellow with specific proportions and particle sizes to compound in the polycarbonate/styrene resin alloy as yellow toner of polycarbonate resin. The mass ratio of bismuth vanadate to azo yellow is too high or too low, which is unfavorable for the tinting strength, heat resistance and weather resistance. Under the same addition amount, if bismuth vanadate is used as yellow toner alone, the yellow tinting strength is poor and is far lower than quinophthalone yellow; if azo yellow alone is used as the yellow toner, the color shift value a is exhibited as being larger (i.e., more reddish).
Preferably, the yellow polycarbonate/styrene resin alloy composition of the present invention comprises the following components in parts by weight:
preferably, the yellow toner of the present invention includes bismuth vanadate and azo yellow; the mass ratio of the bismuth vanadate to the azo yellow is 4:1.
the particle size of bismuth vanadate and azo yellow has a great influence on the tinting strength, heat resistance and weather resistance. In the range of bismuth vanadate and azo yellow according to the present invention, the coloring power, heat resistance and weather resistance of the yellow toner are increased with the increase of the mesh number of bismuth vanadate and azo yellow, but after increasing to a certain extent, the overall coloring power, heat resistance and weather resistance are rather decreased due to difficulty in dispersion.
Preferably, the particle size of the bismuth vanadate is 300-600 meshes, and the particle size of the azo yellow is 300-600 meshes. More preferably, the particle size of the bismuth vanadate is 400-500 mesh, and the particle size of the azo yellow is 400-500 mesh.
Polycarbonate resins and styrenic resins conventional in the art can be used in the present invention.
The polycarbonate resin is one or more of aromatic polycarbonate, aliphatic polycarbonate, branched polycarbonate, aromatic-aliphatic polycarbonate or siloxane copolycarbonate.
The production method of the polycarbonate resin (for example, aromatic polycarbonate) is not particularly limited, and may be prepared by an interfacial polymerization method (phosgene method) or a transesterification method (melt method).
The polycarbonate resin provided by the invention has medium viscosity PC, and the viscosity is 8-11 Pa.s.
The viscosity of the invention is measured according to GB/T1632.5-2008.
The styrene resin is one or more of acrylonitrile-butadiene-styrene resin, acrylonitrile-acrylic ester-styrene resin and acrylonitrile-ethylene propylene diene monomer-styrene resin.
The antioxidant is hindered phenol antioxidant and/or phosphite antioxidant.
The light stabilizer is benzotriazole UV absorber.
Other additives may be added to the yellow polycarbonate/styrenic resin alloy composition of the present invention, and other additives conventional in the art may be used in the present invention, including but not limited to lubricants, compatibilizers, flame retardants. In the yellow polycarbonate/styrene resin alloy composition, the auxiliary agent is 0 to 1.5 parts by weight.
The lubricant is one or more of ester lubricants and polyethylene lubricants.
The compatilizer is maleic anhydride compatilizer.
The flame retardant is one or more of antimony white flame retardants and antimonates.
The invention also provides a preparation method of the yellow polycarbonate/styrene resin alloy composition, which comprises the following steps: mixing all the components uniformly according to the proportion, adding the mixture into an extruder, and carrying out melt blending, extrusion and granulation; wherein the melting temperature is 220-250 ℃.
The application of the yellow polycarbonate/styrene resin alloy composition in preparing plastic products is also within the protection scope of the invention. More specifically, the yellow polycarbonate/styrene resin alloy composition is applied to the preparation of plastic products for outdoor use. The outdoor plastic products include, but are not limited to, camp beds and tents.
The invention also provides a polycarbonate product, which is prepared from the yellow polycarbonate/styrene resin alloy composition.
Compared with the prior art, the invention has the beneficial effects that:
the yellow polycarbonate/styrene resin alloy composition is compounded by adopting bismuth vanadate and azo yellow with specific proportion and particle size, and can obtain yellow toner with the same coloring capacity as that of quinopeptide flavone on the premise of the same dosage, and the prepared plastic product has good heat resistance and weather resistance.
Detailed Description
The invention is further described below in connection with the following detailed description. The starting materials in both examples and comparative examples are commercially available or can be prepared by known methods. In the present specification, "part" and "%" refer to parts by weight and "% by mass", respectively, unless otherwise specified.
The manufacturers and brands of the raw materials used in the following examples and comparative examples are as follows:
1. polycarbonate resin: aromatic polycarbonate with the viscosity of 9Pa.s, prepared by Japanese glaring, brand PC FN2200 and phosgene method;
2. styrene resin: acrylonitrile-butyl acrylate-styrene resin, trade mark ABS 8434, shanghai high bridge petrochemical company;
3. yellow toner:
bismuth vanadate 1: the particle size is 500 meshes, and the Germany is Haibo;
bismuth vanadate 2: particle size is 300 mesh, german sea blogs;
bismuth vanadate 3: the particle size is 400 meshes, and the Germany is Haibo;
bismuth vanadate 4: particle size is 1000 mesh, german sea blogs;
bismuth vanadate 5: the particle size is 100 meshes, and the Germany is Haibo;
azo yellow 1: particle size 500 mesh, clariant;
azo yellow 2: particle size 600 mesh, clariant;
azo yellow 3: particle size 400 mesh, clariant;
azo yellow 4: particle size of 1000 mesh, clariant;
azo yellow 5: particle size is 100 mesh, clariant;
quinophthalone yellow: m101, asian;
4. an antioxidant: mixtures of hindered phenolic antioxidants with phosphite antioxidants, SONOX 1076, ciba;
5. light stabilizers: benzotriazole UV absorbers, tinuvin 328, ciba company;
6. and (3) a lubricant: pentaerythritol stearate, GLYCOLUBE-P, LOZA.
Examples and comparative examples
The contents (in parts by weight) of the respective components in the yellow polycarbonate/styrene resin alloy compositions of the examples and comparative examples are shown in tables 1 to 3.
The preparation method comprises the following steps: the components of the dried polycarbonate resin, the styrene resin, the compatilizer, the antioxidant, the light stabilizer, the yellow toner and the like are mixed according to the proportion and then added into a main machine barrel of a double-screw extruder (the screw diameter is 35mm, and the length-diameter ratio L/D=48). The control temperature of each section of the main machine barrel (from the feed inlet to the machine head outlet) is 220 ℃, 235 ℃, 245 ℃, 250 ℃ and 245 ℃ respectively, the rotating speed of the twin screw is 300 revolutions per minute, and the extruded material strip is cut into particles after being cooled by a water tank, so that the yellow polycarbonate/styrene resin alloy composition is obtained.
TABLE 1
TABLE 2
TABLE 3 Table 3
Performance testing
The yellow polycarbonate/styrene resin alloy compositions prepared in the above examples and comparative examples were subjected to coloring ability, heat resistance, heat retention resistance and weather resistance tests, and specific test methods and conditions were as follows:
1. coloring ability: under the condition that the toner amount is the same, the b value of the yellow polycarbonate/styrene resin alloy composition is measured by an X-rite7000A color difference meter, and the larger the b value is, the stronger the tinting strength is. The higher the b value (larger) is, the stronger the coloring power of the yellow polycarbonate/styrene resin alloy composition is, compared with the yellow phase (i.e., b value) of the yellow polycarbonate/styrene resin alloy composition, while ensuring that the amounts of the different kinds of toners are equal.
2. Color shift condition: under the condition that the toner consumption is the same, an X-rite7000A color difference meter is adopted to measure the color offset value a of the yellow polycarbonate/styrene resin alloy composition, the larger the color offset value a is, the more reddening is indicated, the color offset value a is 0-1, and the yellow hue is considered to be purer.
3. Heat resistance: after drying the yellow polycarbonate/styrene resin alloy composition in a blast oven at 80 ℃ for 4 hours, the composition was injection molded into 83mm 54mm 2mm surface skin-free smooth color plates by an injection molding machine under the conditions of 30 seconds at 280 ℃ and 30 seconds at 260 ℃. Measuring data (L, a, b) of an injection-molded color plate under a D65 light source by adopting an X-rite7000A color difference meter, comparing the injection-molded color plate with a residence time of 30 seconds at 280 ℃ with the injection-molded color plate with a residence time of 30 seconds at 260 ℃, and according to a formula
The smaller Δe is calculated, the better the heat resistance, with Δe less than 2 being good and Δe less than 1.5 being excellent.
4. Heat retention resistance: drying the obtained yellow polycarbonate/styrene resin alloy composition in a blast oven at 80 ℃ for 4 hours, then using an injection molding machine to mold 83mm 54mm 2 mm-sized smooth color plates with no dermatoglyph on the surfaces, wherein the injection molding conditions are respectively 280 ℃ for 120 seconds and 260 ℃ for 30 seconds, using an X-rite7000A color difference meter to measure the data (L, a and b) of the injection molded color plates under a D65 light source, comparing the injection molded color plates with the 280 ℃ for 120 seconds and the injection molded color plates with the 260 ℃ for 30 seconds, and according to a formula
The smaller Δe is calculated, the better the heat retention resistance is, with Δe less than 2 being good and Δe less than 1.5 being excellent.
5. Weather resistance: the yellow polycarbonate/styrene resin alloy composition obtained was dried in a forced air oven at 80℃for 4 hours and then injection molded into 83mm 54mm 2mm size surface skin-free, smooth injection molded plaques using an injection molding machine under conditions of 240℃dwell for 5S. The tests were carried out in a UVA-340 test box as specified in GB/T16422.3 cycle 1. 8 hours of drying and 1 hour of condensation are carried out for 6 cycles for 72 hours, and then the injection color plate is put into a test box to be measured by an X-rite7000A color difference meter before and after the injection color plate is put into the test boxData (L, a, b) of the plate under the D65 light source are compared with the color difference before and after the plate is subjected to the process according to the formula
And calculating delta E, wherein delta E is expressed by delta E, the smaller delta E represents the smaller chromatic aberration and the better weather resistance, wherein delta E is smaller than 2 and delta E is smaller than 1.5, and the better weather resistance is obtained.
The measurement results of each example and comparative example are shown in table 4.
TABLE 4 Table 4
As is clear from the comparison of examples 1 to 4 with comparative examples 1 to 4, under the same toner amount, the yellow phase coloring ability of the yellow polycarbonate/styrene resin alloy composition using bismuth vanadate and azo yellow in combination as the yellow toner was similar to that of the yellow polycarbonate/styrene resin alloy composition using quinophthalone yellow as the yellow toner, and even the yellow phase coloring ability of the yellow toner using bismuth vanadate and azo yellow was better, indicating that the bismuth vanadate and azo yellow combination can effectively replace quinophthalone yellow. And from the above test results, it was found that the samples obtained from the yellow polycarbonate/styrene-based resin alloy compositions of all examples had good heat resistance, heat retention resistance and weather resistance.
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 modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be encompassed.
Claims (9)
1. The yellow polycarbonate/styrene resin alloy composition is characterized by comprising the following components in parts by weight:
the yellow toner includes bismuth vanadate and azo yellow; the mass ratio of the bismuth vanadate to the azo yellow is 3.8-4.2: 1,
the particle size of the bismuth vanadate is 300-600 meshes or 100 meshes or 1000 meshes,
the particle size of the azo yellow is 300-600 meshes or 100 meshes or 1000 meshes.
2. The yellow polycarbonate/styrene resin alloy composition according to claim 1, comprising the following components in parts by weight:
3. the yellow polycarbonate/styrene resin alloy composition according to claim 1, wherein the styrene resin is one or more of acrylonitrile-butadiene-styrene resin, acrylonitrile-acrylate-styrene resin, and acrylonitrile-ethylene propylene diene monomer-styrene resin.
4. The yellow polycarbonate/styrene resin alloy composition according to claim 1, wherein the antioxidant is a hindered phenol antioxidant and/or a phosphite antioxidant.
5. The yellow polycarbonate/styrenic resin alloy composition according to claim 1, wherein the light stabilizer is a benzotriazole-based UV absorber.
6. The yellow polycarbonate/styrene resin alloy composition according to claim 1, further comprising an auxiliary agent, wherein the auxiliary agent is one or more of a lubricant, a compatilizer and a flame retardant.
7. The method for producing a yellow polycarbonate/styrene resin alloy composition according to any one of claims 1 to 6, comprising the steps of: mixing all the components uniformly according to the proportion, adding the mixture into an extruder, and carrying out melt blending, extrusion and granulation.
8. Use of the yellow polycarbonate/styrene resin alloy composition according to any one of claims 1 to 6 for the preparation of plastic articles for outdoor use.
9. A polycarbonate article prepared from the yellow polycarbonate/styrene resin alloy composition according to any one of claims 1 to 6.
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| EP0816440B1 (en) * | 1996-06-17 | 2002-12-11 | Ciba SC Holding AG | Bismuth-vanadat pigment powder mixtures |
| JP2006307165A (en) * | 2005-04-01 | 2006-11-09 | Toda Kogyo Corp | Colored resin particles, water-based dispersion containing the colored resin particles, and ink for ink-jet printing or color filter |
| CN103881349A (en) * | 2013-12-28 | 2014-06-25 | 上海普利特复合材料股份有限公司 | Highly weather-resistant colored polycarbonate-acrylonitrile-butadiene-styrene resin blending material and preparation method thereof |
| JP6238293B2 (en) * | 2014-02-21 | 2017-11-29 | 関西ペイント株式会社 | Colored resin particles and aqueous multicolor pattern coating composition containing the same |
| CN107011645B (en) * | 2017-04-18 | 2019-05-24 | 广东圆融新材料有限公司 | A kind of high temperature yellowing-resistant flame retardant polycarbonate composition and preparation method thereof |
| CN108753278A (en) * | 2017-11-02 | 2018-11-06 | 王小琴 | A kind of long-lasting phosphor of sheet |
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