CN115873356B - Styrene-based composition with high electroplating performance and preparation method thereof - Google Patents
Styrene-based composition with high electroplating performance and preparation method thereof Download PDFInfo
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- CN115873356B CN115873356B CN202211648438.1A CN202211648438A CN115873356B CN 115873356 B CN115873356 B CN 115873356B CN 202211648438 A CN202211648438 A CN 202211648438A CN 115873356 B CN115873356 B CN 115873356B
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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000009713 electroplating Methods 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 239000005060 rubber Substances 0.000 claims abstract description 29
- 239000011324 bead Substances 0.000 claims abstract description 26
- 239000011521 glass Substances 0.000 claims abstract description 26
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 19
- MAYCNCJAIFGQIH-UHFFFAOYSA-N buta-1,3-diene 5-phenylpenta-2,4-dienenitrile Chemical compound C=CC=C.N#CC=CC=CC1=CC=CC=C1 MAYCNCJAIFGQIH-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920001577 copolymer Polymers 0.000 claims abstract description 19
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 24
- 239000000314 lubricant Substances 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 14
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 12
- ACYXOHNDKRVKLH-UHFFFAOYSA-N 5-phenylpenta-2,4-dienenitrile prop-2-enoic acid Chemical compound OC(=O)C=C.N#CC=CC=CC1=CC=CC=C1 ACYXOHNDKRVKLH-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000005062 Polybutadiene Substances 0.000 claims description 7
- 229920002857 polybutadiene Polymers 0.000 claims description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 4
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 238000009474 hot melt extrusion Methods 0.000 claims 1
- 229960004274 stearic acid Drugs 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 34
- 239000011248 coating agent Substances 0.000 abstract description 12
- 238000000576 coating method Methods 0.000 abstract description 12
- 239000012467 final product Substances 0.000 abstract description 4
- 239000002861 polymer material Substances 0.000 abstract description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 11
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- -1 acrylic ester Chemical class 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920000800 acrylic rubber Polymers 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
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- 238000012824 chemical production Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009395 genetic defect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000489 osmium tetroxide Inorganic materials 0.000 description 1
- 239000012285 osmium tetroxide Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229920000638 styrene acrylonitrile Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000010891 toxic waste Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000008947 yigong Substances 0.000 description 1
Abstract
The invention discloses a styrene-based composition with high electroplating performance and a preparation method thereof, and belongs to the technical field of high polymer materials. The styrene-acrylonitrile copolymer is used as a main body of the styrene-acrylonitrile-butadiene rubber copolymer with special grain size and the styrene-acrylonitrile-acrylic ester rubber copolymer, and glass beads with specific content are introduced, so that the final product has good coating drawing force after electroplating, and the tensile strength of the product is obviously improved. The invention also discloses a preparation method of the product and application of the product in preparation of bathroom equipment.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a styrene-based composition with high electroplating performance and a preparation method thereof.
Background
ABS resin (acrylonitrile-butadiene-styrene copolymer) is a thermoplastic polymer material with high strength, good toughness and easy processing and forming, and the processed product has smooth surface and easy dyeing and electroplating, so the ABS resin can be widely used for mechanical and electronic and automobile interior and exterior parts or structural parts, household appliances, toys and other daily necessities. Electroplating ABS is an important application field of ABS resin, and by electroplating the ABS resin, the advantages of light weight, high cost performance and high texture of metal and wear resistance of plastic can be perfectly combined. The electroplated ABS material is widely applied to various industries such as automobile interior and exterior trim, household electrical appliances, bathroom, shielding technology, microelectronics and the like.
However, the traditional chemical plating process often produces toxic wastes such as waste water, waste gas and waste residues to different degrees, especially the skin contact of heavy metal ions such as high-valence chromium generated by electroplating can cause allergy, serious genetic defects, cancerogenesis and the like, so that the prior art mainly adopts an electroless plating technology to prepare the electroplated ABS material, but compared with the traditional electroplated ABS material, the electroless plated ABS material has very poor plating binding force and cannot guarantee the tensile strength due to the wear resistance and mechanical property which are not endowed by the electroplating, and the application range is greatly reduced.
Disclosure of Invention
Based on the defects existing in the prior art, the invention aims to provide a styrene-based composition with high electroplating performance, which takes a styrene-acrylonitrile copolymer as a main body, is matched with a styrene-acrylonitrile-butadiene rubber copolymer with a special particle size and a styrene-acrylonitrile-acrylate rubber copolymer, and simultaneously introduces glass beads with specific content, so that a final product not only has good coating drawing force after electroplating, but also can ensure the tensile strength of the product.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a styrene-based composition with high electroplating performance comprises the following components in parts by weight:
60-75 parts of styrene-acrylonitrile copolymer, 20-40 parts of styrene-acrylonitrile-butadiene rubber copolymer, 5-15 parts of styrene-acrylonitrile-acrylate rubber copolymer, 5-10 parts of polymethyl methacrylate, 5-10 parts of glass beads and 0.2-10 parts of processing aid;
the average particle diameter of butadiene rubber of the styrene-acrylonitrile-butadiene rubber copolymer is 400-500 nm, and the average particle diameter of acrylate rubber of the styrene-acrylonitrile-acrylate rubber copolymer is 80-120 nm.
In the traditional chromium-free electroplating ABS material, although components such as styrene-acrylonitrile copolymer and styrene-acrylonitrile-butadiene rubber copolymer are often used in a matched mode, when the product is in an electroplating process, the size and depth of anchor points roughened by electroplating solution on a substrate material cannot be effectively controlled, and the drawing force of a plated layer of a final product after electroplating cannot be guaranteed. On the other hand, the initial tensile strength of the existing modified chromium-free electroplated ABS material and the drawing force of a plated coating are not intuitively related, the situation that the drawing force of the plated coating after the product component is modified is high, but the basic tensile property is poor is often easy to occur, the drawing force of the plated coating of the electroplated ABS material mainly depends on the interaction force of all components after the electroplating process, the acting force property is completely different from the tensile strength of the product, and the tensile strength of the product is influenced to be small although the drawing force of the coating is improved after the product is introduced with a modifying means. In the components of the styrene-based composition with high electroplating performance, the inventor uses the styrene-acrylonitrile-butadiene rubber copolymer with specific rubber particle size and the styrene-acrylonitrile-acrylic ester rubber copolymer with high acrylonitrile content as main resin bodies, the two matched rubber copolymers form special gradient size components which are distributed in an arrayed mode, and the two matched rubber copolymers are matched with glass beads and assisted with polymethyl methacrylate for synergy, so that the product not only has good tensile strength, but also can improve the roughness of the surface of matrix resin and the depth of holes after coarsening of electroplating liquid during electroplating, and anchor points with different sizes and depths can be formed in the product, so that the drawing force of a coating is obviously improved. When this gradient distribution in the product is changed (for example, the limited component content, or the butadiene rubber of the styrene-acrylonitrile-butadiene rubber copolymer, the particle size of the acrylic rubber of the styrene-acrylonitrile-acrylic rubber copolymer is not properly selected), the tensile properties and/or the drawing force of the plating after electroplating are difficult to be ensured.
The method for testing the particle size of the styrene-acrylonitrile-butadiene rubber copolymer and the styrene-acrylonitrile-acrylic ester rubber copolymer in the styrene-based composition with high electroplating performance comprises the following steps of: the material was microtomed at-60 ℃ using an ultra-thin cryomicrotome, stained with osmium tetroxide after sectioning, and then the rubber size characterized by TEM.
Preferably, the glass beads have an average particle size of 2.5 to 3.5. Mu.m.
The method for testing the average particle size of the glass beads comprises the following steps: and (3) placing the product in a muffle furnace, calcining for 30min at 600-800 ℃, washing and filtering ash, and then directly testing by adopting a laser particle size analyzer.
In the components of the styrene-based composition with high electroplating performance, the sizes of the two rubbers are in nm level, the size of anchor points formed by coarsening electrolyte is smaller, the selection of inorganic filler is indispensable for forming anchor points with larger sizes, and the selection of spherical glass beads can further improve the probability of forming anchor points with various sizes when the components are electroplated, and meanwhile, the tensile performance of the product can also be ensured. Further preferably, it has been found that the glass beads having a particle diameter of about 2.5 to 3.5 μm are excellent in suitability for the styrene-acrylonitrile copolymer and the two rubber copolymers in the composition and have the best effect.
Preferably, the acrylonitrile content of the styrene-acrylonitrile copolymer is 30wt% to 35wt%, the butadiene content of the styrene-acrylonitrile-butadiene rubber copolymer is 50wt% to 60wt%, and the acrylate content of the styrene-acrylonitrile-acrylate rubber copolymer is 55wt% to 65wt%.
Preferably, the processing aid is at least one of a lubricant and an antioxidant.
More preferably, the lubricant is at least one of an amide-based lubricant, a stearic acid-based lubricant, a silicone-based lubricant, and a paraffin-based lubricant.
More preferably, the antioxidant is at least one of hindered phenol antioxidants, phosphite antioxidants and hindered amine antioxidants.
Another object of the present invention is to provide a method for preparing the high-electroplating-performance styrene-based composition, comprising the steps of:
and uniformly mixing all components except the glass beads, placing the components into a double-screw extruder from a main feeding port, simultaneously placing the glass beads into a side feeding port or an exhaust hole of the double-screw extruder, heating, melting and extruding, and cooling and granulating to obtain the styrene-based composition with high electroplating performance.
The styrene-based composition with high electroplating performance has simple operation steps and low equipment requirement, and can realize industrial mass production.
Preferably, the feeding speed of the main feeding port and the side feeding port of the double-screw extruder is 200-350 rpm.
Preferably, during the process of heating and melting extrusion, the temperature of each section of screw of the double screw extruder is set as follows: the first area is 220-250 ℃, the second area is 220-240 ℃, the third area is 210-220 ℃, the fourth area is 210-230 ℃, the fifth area is 210-230 ℃, and the die is 220-230 ℃; the rotation speed of the host machine is set to be 100-500 rpm, and the vacuum degree is set to be not higher than 0.1MPa.
It is a further object of the present invention to provide the use of said high electroplating performance styrene-based composition for the preparation of sanitary equipment.
Preferably, the bathroom equipment comprises a shower, a faucet and a bathroom button.
The styrene-based composition with high electroplating performance belongs to an electroless chromium plating material, and compared with the traditional electroless chromium plating material, the styrene-based composition has the advantages of high plating layer drawing force, high intrinsic tensile strength, good processability when being used for preparing a bathroom shower, high product quality after the preparation and excellent use performance after the preparation.
The invention has the beneficial effects that the styrene-acrylonitrile copolymer is used as a main body of the styrene-acrylonitrile-butadiene rubber copolymer and the styrene-acrylonitrile-acrylate rubber copolymer with special particle size are matched, and glass beads and polymethyl methacrylate with specific content are introduced, so that the final product has good coating drawing force after electroplating, and the tensile strength of the product is obviously improved. The invention also provides a preparation method of the product and application of the product in preparation of bathroom equipment.
Detailed Description
The present invention will be further described with reference to specific examples and comparative examples for better illustrating the objects, technical solutions and advantages of the present invention, and the object of the present invention is to be understood in detail, not to limit the present invention. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present invention. The experimental reagents and instruments involved in the practice of the present invention are common reagents and instruments unless otherwise specified.
Examples 1 to 6
In the embodiment of the high-electroplating-performance styrene-based composition and the preparation method thereof, the components of the high-electroplating-performance styrene-based composition are shown in table 1.
The preparation method of the styrene-based composition with high electroplating performance comprises the following steps:
and (3) mixing all components except the glass beads for 5min at the speed of 600rpm in a high-speed mixer until the components are uniform, placing the mixture into a double-screw extruder from a main feeding port, placing the glass beads into a side feeding port of the double-screw extruder, heating, melting and extruding the mixture, and cooling and granulating the mixture to obtain the styrene-based composition with high electroplating performance.
The main feeding port and the side feeding port of the double-screw extruder have a feeding rotation speed of 300rpm.
In the heating and melting extrusion process, the temperature of each section of screw rod of the double-screw extruder is set as follows: the first area is 220-250 ℃, the second area is 220-240 ℃, the third area is 210-220 ℃, the fourth area is 210-230 ℃, the fifth area is 210-230 ℃, and the die is 220-230 ℃; the rotation speed of the host machine is set to be 100-500 rpm, and the vacuum degree is set to be not higher than 0.1MPa.
Comparative examples 1 to 12
The comparative examples differ from the examples only in the kinds and proportions of the components, as shown in Table 2.
Among the components described in each example and comparative example,
the styrene-acrylonitrile copolymer is SAN 350N produced by the petrochemical industry of Jinhu, and the acrylonitrile content is 35wt%;
the styrene-acrylonitrile-butadiene rubber copolymer 1 is ABS POW HR181 produced by Jinhu petrochemical production, the average grain diameter of butadiene rubber is 420nm, and the butadiene content is 55wt%;
the styrene-acrylonitrile-butadiene rubber copolymer 2 is ABS 60P produced by national arbor petrochemical industry, the average grain diameter of butadiene rubber is 480nm, and the butadiene content is 60wt%;
the styrene-acrylonitrile-butadiene rubber copolymer 3 is WD-132 produced in the chemical industry, the average grain diameter of butadiene rubber is 350nm, and the butadiene content is 60wt%;
the styrene-acrylonitrile-butadiene rubber copolymer 4 is EB-168 produced by Yigong chemical production, the average grain diameter of butadiene rubber is 550nm, and the butadiene content is 60wt%;
the styrene-acrylonitrile-acrylic ester rubber copolymer 1 is Q800 produced by the east China sea plastics industry, the average grain diameter of acrylic ester rubber is 80nm, and the acrylic ester content is 60wt%;
the styrene-acrylonitrile-acrylic ester rubber copolymer 2 is Q500 produced by the east China sea plastics industry, the average grain diameter of acrylic ester rubber is 120nm, and the acrylic ester content is 60wt%;
the styrene-acrylonitrile-acrylic ester rubber copolymer 3 is Q350 produced by the east China sea plastics industry, the average grain diameter of acrylic ester rubber is 500nm, and the acrylic ester content is 60wt%;
glass bead 1: NP3-P0 produced by Suweiteke, having an average particle size of 2.5 μm;
glass bead 2: NP3-P1 produced by Suweiteke, having an average particle size of 3.5 μm;
glass bead 3: 050-20-215 produced by Suweiteke, the average particle size is 20 μm;
barium sulfate: AB-3000N2 of Dongfeng chemical industry production, the average grain diameter is 3 μm;
talc powder: ai Haiyi m HTP05L with an average particle size of 3 μm;
polymethyl methacrylate: PMMA CM-207 manufactured by Qimei industries;
an antioxidant: a mixture of commercially available hindered phenol antioxidants and phosphite antioxidants in a mass ratio of 1:2;
and (3) a lubricant: silicone lubricants are commercially available.
The antioxidants and lubricants used in the examples and comparative examples of the present invention were all commercially available materials, unless otherwise specified, and the component materials used in the parallel experiments were all the same.
The products obtained in each example and comparative example of the present invention were tested for the average particle size of the glass beads before and after processing, and as a result, it was found that the average particle size of the glass beads after processing was not more than 5% from the original average particle size before processing, and therefore, it was considered that the average particle size of each glass bead did not change before and after processing in the present invention.
TABLE 1
TABLE 2
Effect example 1
To verify the performance of the high plating performance styrene-based composition of the present invention, the tensile strength test was performed on each of the examples and comparative examples, specifically as follows:
the test is carried out according to ISO 527-2-2012 standard, the sample is a type I sample, and the test equipment is a tensile tester Z020 of Zwick company in Germany;
meanwhile, the test boards of each example and comparative example were injection molded to 100×100×2mm and subjected to an electroless plating treatment using a roughening agent of manganese-based, and then the plated test boards were cut into test strips of 10mm in width, and the plating drawing force was tested at a test rate of 100mm/min and a peeling angle of 90 ° according to ASTM B533-2013, with the test results shown in tables 3 and 4.
TABLE 3 Table 3
TABLE 4 Table 4
As can be seen from tables 3 and 4, the products of each embodiment have better tensile strength, the tensile strength of each embodiment can reach more than 40MPa, meanwhile, the products have better electroplating performance, the drawing force of the electroplated coating can reach more than 16MPa, and compared with the product of comparative example 1 of blank control, the drawing force of the electroplated coating is obviously improved; as is clear from the comparison between the products of example 1 and examples 5 to 6, the size of the glass beads in the components has a larger influence on the anchoring effect of the components under the condition that the proportion of each component is unchanged, and if the size of the glass beads is larger, the drawing force of the plated coating of the product is reduced to a certain extent. As can be seen from the properties of the products prepared in example 1 and comparative examples 2 to 7, when the proportions of the matrix resin styrene-acrylonitrile copolymer, styrene-acrylonitrile-butadiene rubber copolymer and styrene-acrylonitrile-acrylate rubber copolymer in the product components are changed, the tensile strength and the electroplating properties of the product are changed, and when the proportions of the three are proper, the electroplating drawing force of the product is remarkably improved, and even the tensile strength is improved to some extent; if one of the additives is too much or too little, the drawing force of the plated coating after electroplating will be significantly reduced, and even the tensile strength of the product may be affected, making it worse than the blank product of comparative example 1 without any modification component added; the comparative examples 8 to 10 were too large or too small in the rubber particle size of the styrene-acrylonitrile-butadiene rubber copolymer, and the acrylic acid ester rubber particle size of the styrene-acrylonitrile-acrylic acid ester rubber copolymer was too large, and it can be seen that the tensile strength of the product was not greatly changed as compared with example 1, but the drawing force of the plated coating layer was also significantly weakened; the products of comparative examples 11 and 12, however, replaced glass beads in the composition with fillers commonly used in existing resin products, and as a result, were found to have little assistance in the formation of "anchor points" for the resin and poor electroplating performance.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The styrene-based composition with high electroplating performance is characterized by comprising the following components in parts by weight:
60-75 parts of styrene-acrylonitrile copolymer, 20-30 parts of styrene-acrylonitrile-butadiene rubber copolymer, 5-10 parts of styrene-acrylonitrile-acrylate rubber copolymer, 5-10 parts of polymethyl methacrylate, 5-10 parts of glass beads and 0.2-10 parts of processing aid;
the average particle diameter of butadiene rubber of the styrene-acrylonitrile-butadiene rubber copolymer is 400-500 nm, and the average particle diameter of acrylate rubber of the styrene-acrylonitrile-acrylate rubber copolymer is 80-120 nm.
2. The high-electroplating-performance styrene-based composition according to claim 1, wherein the glass beads have an average particle diameter of 2.5 to 3.5 μm.
3. The high-electroplating performance styrene-based composition according to claim 1, wherein the acrylonitrile content of the styrene-acrylonitrile copolymer is 30wt% to 35wt%, the butadiene content of the styrene-acrylonitrile-butadiene rubber copolymer is 50wt% to 60wt%, and the acrylate content of the styrene-acrylonitrile-acrylate rubber copolymer is 55wt% to 65wt%.
4. The high-electroplating performance styrene-based composition according to claim 1, wherein said processing aid is at least one of a lubricant and an antioxidant.
5. The high-plating-performance styrene-based composition according to claim 4, wherein said lubricant is at least one of an amide-based lubricant, a stearic-acid-based lubricant, a silicone-based lubricant, and a paraffin-based lubricant;
the antioxidant is at least one of hindered phenol antioxidants, phosphite antioxidants and hindered amine antioxidants.
6. The method for preparing a styrene-based composition having high plating performance according to any one of claims 1 to 5, comprising the steps of:
and uniformly mixing all components except the glass beads, placing the components into a double-screw extruder from a main feeding port, simultaneously placing the glass beads into a side feeding port or an exhaust hole of the double-screw extruder, heating, melting and extruding, and cooling and granulating to obtain the styrene-based composition with high electroplating performance.
7. The method for producing a styrene-based composition having high plating properties according to claim 6, wherein the main feeding port and the side feeding port of the twin-screw extruder are fed at 200 to 350rpm.
8. The method for producing a styrene-based composition having high plating properties according to claim 6, wherein in the process of hot melt extrusion, the screw temperatures of the respective stages of the twin-screw extruder are set as follows: first region 220-250 ℃, second region 220-240 ℃, third region 210-220 ℃, fourth region 210-230 ℃, fifth region 210-230 ℃, and die 220-230 ℃; the rotating speed of the host machine is set to be 100-500 rpm, and the vacuum degree is set to be not higher than 0.1MPa.
9. The use of a high-electroplating-performance styrene-based composition according to any one of claims 1 to 5 for the preparation of sanitary equipment.
10. Use of the high plating performance styrene-based composition according to claim 9 for the preparation of sanitary equipment, comprising shower heads, water taps and sanitary buttons.
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