CN115785610B - High-impact permanent antistatic ABS material and preparation method thereof - Google Patents
High-impact permanent antistatic ABS material and preparation method thereof Download PDFInfo
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- CN115785610B CN115785610B CN202310053275.0A CN202310053275A CN115785610B CN 115785610 B CN115785610 B CN 115785610B CN 202310053275 A CN202310053275 A CN 202310053275A CN 115785610 B CN115785610 B CN 115785610B
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Abstract
The invention provides a high-impact permanent antistatic ABS material and a preparation method thereof, wherein the ABS material comprises the following raw materials in percentage by mass: 50-75% of styrene resin, 15-30% of permanent antistatic agent, 3-10% of compatilizer, 5-22% of toughening agent, 0.5-1% of antioxidant and 0.5-1% of lubricant; the permanent antistatic agent is a polystyrene-polyether block polymer copolymer. Under the combined action of the components, the ABS material has excellent notch impact strength, lower surface resistance, dyeing property and antistatic permanence. The experimental results show that: ABS material can be dyed, antistatic and permanent, and has surface resistance of 3 x 10 7 ~9×10 8 Omega; the notch impact strength is more than or equal to 40KJ/m 2 。
Description
Technical Field
The invention belongs to the technical field of ABS resin, and particularly relates to a high-impact permanent antistatic ABS material and a preparation method thereof.
Background
ABS plastic is a terpolymer formed by copolymerizing three monomers of acrylonitrile, butadiene and styrene, and has the common properties of the three components; acrylonitrile makes it resistant to chemical corrosion, heat and surface hardness, butadiene makes it have high elasticity and toughness, and styrene makes it have the processing and shaping characteristics of thermoplastic plastics. ABS plastic is a tough, hard and rigid material with easily available raw materials, good comprehensive performance, low price and wide application range. ABS plastic is widely applied in manufacturing industries such as machinery, electricity, textile, automobiles, airplanes, ships and the like and chemical industry.
With the development of Chinese economy, the living standard of people is improved, the requirements of consumers on the appearance quality of products are higher and higher, ABS plastic is widely applied to plastic parts such as automobiles, household appliances and the like, but the surface resistance of conventional plastic materials is higher, dust and the like in the air have certain charges and can be adsorbed on the surfaces of products for a long time, and the use feeling of the products is affected. In addition, in some special industries, such as precision electronic parts, mine operation and other fields needing to prevent static hazard or easily generating static electricity, the common ABS plastic cannot meet the product requirements.
The conventional antistatic technology at present comprises the following steps: adding surfactant, conductive filler and carbon fiber, or coating conductive coating on the surface of the product. The principle of the method is that the surfactant is separated out to the surface of the product to absorb the moisture in the air to form a layer of conductive grid on the surface of the product, and the antistatic effect is greatly influenced by the air humidity. After the conductive layer formed on the surface is removed by friction or washing, the antistatic effect is obviously reduced, and the permanent antistatic effect cannot be achieved. The antistatic effect can be achieved by coating the antistatic coating on the surface of the product, but the process is complex, waste products are easy to generate, and the cost is high. The method for preparing the conductive carbon black, the carbon nano tube or the carbon fiber can only prepare black products, other color products cannot meet the requirements, and the product processability and mechanical properties are poor.
In chinese patent CN 102719051a, the inventors achieved antistatic effect by adding low molecular weight nonionic and anionic antistatic agents to ABS materials, but this type of antistatic agent has low molecular weight and gradually precipitates to the surface of the materials, the antistatic effect decreases until disappearing over time, and environmental humidity has a great influence on antistatic, which limits the use of the materials.
In Chinese patent CN 104497472A, the inventor only prepares an antistatic ABS modified material, the antistatic agent is a mixture composed of carbon black and carbon fiber in a weight ratio of 1:0.8-1.2, and the surface resistance of the material can reach 10 5 ~10 7 Omega, but the product color is black, and only black products can be made.
In chinese patent CN 103819866a, the inventor prepares an ABS composite material with permanent antistatic effect by adding a permanent antistatic agent to an ABS material, and a compatibility agent is also added to a formulation system to solve the problem of compatibility, but the prepared antistatic ABS material has low impact strength.
Disclosure of Invention
In view of the above, the present invention aims to provide a high impact permanent antistatic ABS material and a method for preparing the same, which has excellent notched impact strength, lower surface resistance, dyeability and antistatic permanence.
The invention provides a high-impact permanent antistatic ABS material, which comprises the following raw materials in percentage by mass:
50-75% of styrene resin, 15-30% of permanent antistatic agent, 3-10% of compatilizer, 5-22% of toughening agent, 0.5-1% of antioxidant and 0.5-1% of lubricant;
the permanent antistatic agent is a polystyrene-polyether block polymer copolymer;
the compatilizer is one or more selected from styrene-maleic anhydride copolymer, AES-maleic anhydride copolymer and toughening compatilizer with core-shell structure;
the toughening agent is ABS high rubber powder with butadiene content of 50-80 wt%.
In the present invention, the compatibilizing agent is selected from one or more of SMA-7000, CMG-7000 and SBG-001;
the permanent antistatic agent is IPE abSTAT; permanent antistatic agents of the above type are constituted by polymers in the form of interpenetrating networks (IPNs), which are mainly distributed in fine layers or ribs on the surface of the article, constituting conductive surfaces, and are distributed almost spherically in the central part, forming a so-called "core-shell structure", and by this means leaking electrostatic charges as a path; permanent antistatic agents of the above type achieve antistatic effects by reducing the volume resistivity of the material, do not rely entirely on surface absorption of water, and are therefore less affected by environmental humidity.
The toughening agent is selected from ABS HR-181 and/or ABS INP338T.
The invention solves the compatibility problem of the antistatic agent and the ABS resin by controlling the types and the dosage of the compatilizer and the toughening agent, obtains the material with high impact property and expands the application range of the material.
In the present invention, the styrene-based resin is selected from one or more of acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer and acrylonitrile-EPDM-styrene copolymer.
In the invention, the melt index of the styrene resin is 10-40 g/10min.
In the invention, the content of MAH (maleic anhydride) in the styrene-maleic anhydride copolymer is 1-2wt%;
the content of MAH in the AES-maleic anhydride copolymer is 1-2wt%;
the toughening compatilizer with the core-shell structure has a core layer of butadiene elastomer, and a shell layer of the toughening compatilizer contains high-activity epoxy groups.
In the invention, the lubricant is selected from one or more of ethylene bis stearamide, pentaerythritol stearate and oxidized polyethylene wax;
the antioxidant is selected from one or more of antioxidant 1010, antioxidant 1076, antioxidant 168 and antioxidant 626.
The high-impact permanent antistatic ABS material provided by the invention can be repeatedly processed and utilized, and the antistatic performance attenuation is not obvious; it is a primary color product and can be dyed into various colors as raw material resin.
The invention provides a preparation method of the high-impact permanent antistatic ABS material, which comprises the following steps:
mixing the styrene resin, the permanent antistatic agent, the compatilizer, the toughening agent, the antioxidant and the lubricant, melting, mixing, extruding, cooling and granulating to obtain the high-impact permanent antistatic ABS material.
The high-impact permanent antistatic ABS material provided by the invention can be dyed, has a permanent antistatic effect, and can be applied to plastic products with antistatic and high impact requirements, such as electronic appliances, security equipment and the like.
The beneficial effects of the invention are as follows: the invention provides a high-impact permanent antistatic ABS material, which comprises the following raw materials in percentage by mass: 50-75% of styrene resin, 15-30% of permanent antistatic agent, 3-10% of compatilizer, 5-22% of toughening agent, 0.5-1% of antioxidant and 0.5-1% of lubricant; the styrene resinOne or more selected from the group consisting of acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer and acrylonitrile-EPDM-styrene copolymer; the permanent antistatic agent is a polystyrene-polyether block polymer copolymer; the compatilizer is one or more selected from styrene-maleic anhydride copolymer, AES-maleic anhydride copolymer and toughening compatilizer with core-shell structure; the toughening agent is ABS high rubber powder with butadiene content of 50-80 wt%. Under the combined action of the components, the ABS material has excellent notch impact strength, lower surface resistance, dyeing property and antistatic permanence. The experimental results show that: ABS material can be dyed, antistatic and permanent, and has surface resistance of 3 x 10 7 ~9×10 8 Omega; the notch impact strength is more than or equal to 40KJ/m 2 。
Drawings
FIG. 1 is a schematic flow chart of the preparation of ABS material according to the present invention.
Detailed Description
In order to further illustrate the present invention, the following examples are provided to describe in detail a high impact permanent antistatic ABS material and a method for preparing the same, but they should not be construed as limiting the scope of the present invention.
In the following cases, the raw materials are selected as follows:
styrene resin: AS 80HF LG chemistry; ABS DG-417, tianjin Dagu; ABS PA-757, zhenjiang Qimei;
antistatic agent: pebax MH2022, alcma; PELECTRON AS, trilobate formation; IPE abSTAT, finland Ai Angfei;
and (3) a compatilizer: SMA-7000, shanghai Hua electrons; CMG-7000, SBG-001 preferably Yi Rong;
high-gel powder: HR-181, korean brocade lake; INP338T, sha Bike;
an antioxidant: 1010 1076, 168, tianjin Li Anlong;
and (3) a lubricant: ethylene bis stearamide EB-P, japan flower king; pentaerythritol stearate PETS-AP, italian hair base;
examples 1 to 6 and comparative examples 1 to 9
According to the formula proportions in tables 1 and 3, the raw materials are added into a high-speed mixer according to the proportions, the rotating speed is set to be 200-500 r/min, and the stirring is carried out for 2-4 min. Adding the mixed materials into a double-screw extruder for melting, mixing and extruding, cooling through a water tank, and finally granulating through a granulator to obtain the ABS material.
And (3) drying the prepared antistatic ABS material by an oven, and then performing injection molding standard sample bars according to ISO standards, and testing.
Table 1 formulations (wt.%) of examples 1-6
Table 2 results of Performance test of examples 1 to 6
Table 3 formulations (wt.%) of comparative examples 1-9
Table 4 results of Performance test of comparative examples 1 to 9
As is apparent from tables 2 and 4, the impact strength of the antistatic ABS material prepared in the examples is significantly higher than that of the comparative examples, and the surface resistance is lower, thus meeting the antistatic requirements.
Comparative example 1 without antistatic agent added, surface resistance exceeding 10 14 Ohmic. Comparative example 4 was added with conductive carbon black as an antistatic agent, the material was black in color, non-dyeable, and the impact strength of the material was low. Comparative example 5 has an anionic surface antistatic agent added, and has a high surface resistance and is not permanently antistatic. Comparative example 2, comparative example 3, comparative example 6 and comparative example 7 in which permanent antistatic agent was added, the surface resistance was higher at lower ratios, and the compatibility was not addedThe impact strength of the material is lower when the agent and the toughening agent are used.
Comparative example 8 and comparative example 9 selected other two polyether antistatic agents, and the comparison found that the surface resistance of the polystyrene-polyether block polymer copolymer was lower at the same addition amount.
According to the invention, the antistatic agent is different in type, and the materials with high impact strength and low surface resistance can be obtained by selecting different compatilizer types and optimizing the proportion of the compatilizer and the toughening agent according to different material components. The ABS materials obtained in example 2, example 3 and example 6 were lower in surface resistance and better in impact properties.
As can be seen from the above examples, the present invention provides a high impact permanent antistatic ABS material, comprising the following raw materials by mass: 50-75% of styrene resin, 15-30% of permanent antistatic agent, 3-10% of compatilizer, 5-22% of toughening agent, 0.5-1% of antioxidant and 0.5-1% of lubricant; the styrene resin is selected from one or more of acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer and acrylonitrile-EPDM-styrene copolymer; the permanent antistatic agent is a polystyrene-polyether block polymer copolymer; the compatilizer is one or more selected from styrene-maleic anhydride copolymer, AES-maleic anhydride copolymer and toughening compatilizer with core-shell structure; the toughening agent is ABS high rubber powder with butadiene content of 50-80 wt%. Under the combined action of the components, the ABS material has excellent notch impact strength, lower surface resistance, dyeing property and antistatic permanence. The experimental results show that: ABS material can be dyed, antistatic and permanent, and has surface resistance of 3 x 10 7 ~9×10 8 Omega; the notched impact strength is more than or equal to 40KJ/m 2 。
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (3)
1. The high-impact permanent antistatic ABS material comprises the following raw materials in percentage by mass:
50-75% of styrene resin, 15-30% of permanent antistatic agent, 3-10% of compatilizer, 5-22% of toughening agent, 0.5-1% of antioxidant and 0.5-1% of lubricant;
the styrene resin is selected from one or more of AS 80HF, ABS DG-417 and ABS PA-757; the melt index of the styrene resin is 10-40 g/10min;
the permanent antistatic agent is IPE abSTAT;
the compatilizer is selected from one or more of SMA-7000, CMG-7000 and SBG-001;
the toughening agent is ABS HR-181 and/or ABS INP338T.
2. The high impact permanent antistatic ABS material according to claim 1 wherein the lubricant is selected from one or more of ethylene bis stearamide, pentaerythritol stearate and oxidized polyethylene wax;
the antioxidant is selected from one or more of antioxidant 1010, antioxidant 1076, antioxidant 168 and antioxidant 626.
3. A method for preparing the high impact permanent antistatic ABS material according to any one of claims 1 to 2, comprising the steps of:
mixing the styrene resin, the permanent antistatic agent, the compatilizer, the toughening agent, the antioxidant and the lubricant, melting, mixing, extruding, cooling and granulating to obtain the high-impact permanent antistatic ABS material.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634160A (en) * | 2012-04-27 | 2012-08-15 | 东莞市信诺橡塑工业有限公司 | Permanently antistatic ABS (Acrylonitrile Butadiene Styrene) composite and preparation method thereof |
| CN102634158A (en) * | 2012-04-27 | 2012-08-15 | 东莞市信诺橡塑工业有限公司 | Permanent antistatic polystyrene composite material and preparation method thereof |
| CN103819866A (en) * | 2014-02-18 | 2014-05-28 | 金发科技股份有限公司 | High-performance permanently-antistatic flame-retardant ABS (acrylonitrile butadiene styrene) material and preparation method and application |
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| JP2004256777A (en) * | 2003-02-28 | 2004-09-16 | Toyo Ink Mfg Co Ltd | Antistatic resin composition and its molded article |
| CN105255037A (en) * | 2015-10-20 | 2016-01-20 | 昆山幻彩塑胶科技有限公司 | Permanent antistatic ABS (acrylonitrile butadiene styrene) flame-retardant material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102634160A (en) * | 2012-04-27 | 2012-08-15 | 东莞市信诺橡塑工业有限公司 | Permanently antistatic ABS (Acrylonitrile Butadiene Styrene) composite and preparation method thereof |
| CN102634158A (en) * | 2012-04-27 | 2012-08-15 | 东莞市信诺橡塑工业有限公司 | Permanent antistatic polystyrene composite material and preparation method thereof |
| CN103819866A (en) * | 2014-02-18 | 2014-05-28 | 金发科技股份有限公司 | High-performance permanently-antistatic flame-retardant ABS (acrylonitrile butadiene styrene) material and preparation method and application |
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