Wear-resistant ABS composite material and preparation method thereof
By adding polytetrafluoroethylene and modified filler to the ABS material, wear-resistant ABS composite material is prepared, which solves the problem of easy wear and lack of electromagnetic shielding during long-term use, and improves the wear resistance and electromagnetic shielding performance of the material.
Patent Information
- Application Number
- CN202510289351.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-05-30
AI Technical Summary
Existing ABS materials are prone to scratches and wear during long-term use, and lack electromagnetic shielding, which limits their application scope.
By adding polytetrafluoroethylene and a modified filler composed of carbon black and tungsten carbide and mixed with ABS resin, an wear-resistant ABS composite material is prepared. This material not only has improved wear resistance but also has electromagnetic shielding effect.
It improves the wear resistance and electromagnetic shielding performance of ABS composite materials, and expands its application range in mechanical strength and electromagnetic environments.
Smart Images
Figure BDA0005308122980000081 
Figure BDA0005308122980000091
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of polymer material preparation, and particularly relates to a wear-resistant ABS composite material and a preparation method thereof. Background Art
[0002] With the development of modern industry, the performance requirements for materials are getting higher and higher, especially in terms of mechanical strength, wear resistance, and chemical corrosion resistance. As a widely used engineering plastic, ABS (acrylonitrile-butadiene-styrene copolymer) is widely used in the fields of automobiles, home appliances, electronic appliances, etc. due to its good comprehensive performance. However, although ABS has good impact resistance and processing performance, its surface hardness is relatively low, and scratches and wear are likely to occur during long-term use, which to a certain extent limits its application scope. Therefore, improving the wear resistance of ABS materials has become an important research direction.
[0003] In addition, ABS does not have electromagnetic shielding effect. With the gradual popularization of automotive autonomous driving technology, external electromagnetic interference will affect the normal operation of automotive instruments and electronic control systems; therefore, it is also necessary to improve the electromagnetic shielding effect of ABS. Summary of the Invention
[0004] In order to overcome at least one of the technical problems existing in the prior art, the present invention provides a wear-resistant ABS composite material and a preparation method thereof.
[0005] The technical solution of the present invention is as follows:
[0006] The present invention first provides a wear-resistant ABS composite material, which comprises the following raw materials in parts by weight
[0007] Components:
[0008] 70 - 100 parts of ABS resin; 5 - 20 parts of polytetrafluoroethylene; 1 - 10 parts of filler; 0.1 - 1 part of antioxidant;
[0009] 0.1 - 1 part of dispersant.
[0010] The present invention provides a brand-new wear-resistant ABS composite material. By adding polytetrafluoroethylene with better wear resistance and a filler composed of carbon black and tungsten carbide to the ABS resin, the prepared ABS composite material has wear resistance; at the same time, it also has electromagnetic shielding effect.
[0011] Preferably, the wear-resistant ABS composite material comprises the following raw material components in parts by weight:
[0012] 80 - 90 parts of ABS resin; 10 - 15 parts of polytetrafluoroethylene; 5 - 10 parts of filler; 0.1 - 0.5 part of antioxidant
[0013] parts; 0.5 - 1 part of dispersant.
[0014] Most preferably, the wear-resistant ABS composite material comprises the following raw material components in parts by weight:
[0015] 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant;
[0016] 0.5 part of dispersant.
[0017] Preferably, the filler consists of carbon black and tungsten carbide.
[0018] Preferably, the weight ratio of carbon black to tungsten carbide in the filler is 2 - 4:1 - 3.
[0019] Most preferably, the weight ratio of carbon black to tungsten carbide in the filler is 3:2.
[0020] Preferably, the filler is a modified filler, and the modified filler is prepared by the following method:
[0021] (1) Add carbon black and tungsten carbide to water and stir evenly to obtain a carbon black - tungsten carbide mixture liquid;
[0022] (2) Put the carbon black - tungsten carbide mixture liquid into a ball mill for ball milling, and obtain ball - milled slurry after the ball milling ends;
[0023] (3) Dry the ball - milled slurry to obtain the modified filler.
[0024] The inventor also found in further research that in the wear - resistant ABS composite material of the present invention, adding the modified filler obtained by modifying carbon black and tungsten carbide by the above method, compared with adding the unmodified filler composed of carbon black and tungsten carbide; it can improve the wear - resistance of the wear - resistant ABS composite material, and at the same time can significantly improve the electromagnetic shielding effect of the wear - resistant ABS composite material.
[0025] Preferably, the weight ratio of carbon black, tungsten carbide and water in step (1) is 2 - 4:1 - 3:8 - 15.
[0026] Most preferably, the weight ratio of carbon black, tungsten carbide and water in step (1) is 3:2:10.
[0027] Preferably, the rotation speed of the ball milling in step (2) is 200 - 500 rpm; the ball milling time is 10 - 24 h.
[0028] Most preferably, the rotation speed of the ball milling in step (2) is 300 rpm; the ball milling time is 12 h.
[0029] Preferably, a modifier is further added in step (1); the weight ratio of carbon black, tungsten carbide, modifier and water is 2-4:1-3:0.1-1:8-15.
[0030] Most preferably, the weight ratio of carbon black, tungsten carbide, modifier and water is 3:2:0.5:10.
[0031] Preferably, the modifier consists of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane.
[0032] The inventors found in the research that in the preparation process of the modified filler of the present invention; a modifier consisting of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane is further added to modify carbon black and tungsten carbide to obtain a modified filler. Compared with the modified filler obtained without adding a modifier, it can further improve the wear resistance of the wear-resistant ABS composite material, and at the same time can also further significantly improve the electromagnetic shielding effect of the wear-resistant ABS composite material.
[0033] The inventors also found in the research that the composition of the modifier of the present invention is very crucial; in the preparation process of the modified filler of the present invention; it is necessary to further add a modifier consisting of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane to modify carbon black and tungsten carbide to obtain a modified filler. Compared with the modified filler obtained without adding a modifier, it can further significantly improve the electromagnetic shielding effect of the wear-resistant ABS composite material; however, adding a modifier consisting of any two of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane to modify carbon black and tungsten carbide to obtain a modified filler cannot significantly improve the electromagnetic shielding effect of the wear-resistant ABS composite material.
[0034] Preferably, the weight ratio of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane is 1-3:1-3:1.
[0035] Most preferably, the weight ratio of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane is 2:2:1.
[0036] Preferably, the antioxidant is antioxidant 1010; the dispersant is calcium stearate.
[0037] The present invention also provides a preparation method of the above-mentioned wear-resistant ABS composite material, which comprises the following steps:
[0038] Mix the ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly and then put them into a twin-screw extruder for melt extrusion to obtain the wear-resistant ABS composite material.
[0039] Beneficial effects: The present invention provides a brand-new wear-resistant ABS composite material. By adding polytetrafluoroethylene with better wear resistance and a filler composed of carbon black and tungsten carbide to the ABS resin, the prepared ABS composite material has wear resistance; at the same time, it also has an electromagnetic shielding effect; it has important application value. Specific embodiments
[0040] The following specific embodiments are used to further explain the present invention, but the embodiments do not limit the present invention in any form.
[0041] In the following embodiments, the ABS resin used is the ABS resin of grade AF312C from LG Chem of South Korea; the polytetrafluoroethylene used is the polytetrafluoroethylene of grade F-201 from Daikin of Japan; the remaining raw materials are all conventional raw materials that can be purchased by those skilled in the art.
[0042] Example 1 Preparation of wear-resistant ABS composite material
[0043] Composition by weight of raw materials: 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant (antioxidant 1010); 0.5 part of dispersant (calcium stearate);
[0044] The filler is composed of carbon black and tungsten carbide mixed in a weight ratio of 3:2.
[0045] Preparation method: Mix the ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly and then put them into a twin-screw extruder for melt extrusion to obtain the wear-resistant ABS composite material.
[0046] Example 2 Preparation of wear-resistant ABS composite material
[0047] Composition by weight of raw materials: 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant (antioxidant 1010); 0.5 part of dispersant (calcium stearate);
[0048] The filler is a modified filler;
[0049] The modified filler is prepared by the following method:
[0050] (1) Add carbon black and tungsten carbide to water and stir evenly to obtain a carbon black-tungsten carbide mixture liquid; wherein, the weight ratio of carbon black, tungsten carbide and water is 3:2:10;
[0051] (2) Put the carbon black-tungsten carbide mixture liquid into a ball mill for ball milling. After the ball milling is completed, obtain a ball-milled slurry; wherein, the rotation speed of the medium ball mill is 300 rpm; the ball milling time is 12 h;
[0052] (3) After drying the ball-milled slurry, the modified filler is obtained.
[0053] Preparation method: Mix ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly, and then put them into a twin-screw extruder for melt extrusion to obtain the wear-resistant ABS composite material.
[0054] Preparation of Wear-Resistant ABS Composite Material in Example 3
[0055] Composition by weight of raw materials: 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant (antioxidant 1010); 0.5 part of dispersant (calcium stearate);
[0056] The filler described above is a modified filler;
[0057] The modified filler is prepared by the following method:
[0058] (1) Add carbon black and tungsten carbide into water, and at the same time add a modifier, and stir evenly to obtain a carbon black-tungsten carbide mixture liquid; among them, the weight ratio of carbon black, tungsten carbide, modifier and water is 3:2:0.5:10; the modifier is composed of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane mixed in a weight ratio of 2:2:1;
[0059] (2) Put the carbon black-tungsten carbide mixture liquid into a ball mill for ball milling, and obtain a ball-milled slurry after the ball milling is completed; among them, the rotation speed of the medium ball mill is 300 rpm; the ball milling time is 12 h;
[0060] (3) After drying the ball-milled slurry, the modified filler is obtained.
[0061] Preparation method: Mix ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly, and then put them into a twin-screw extruder for melt extrusion to obtain the wear-resistant ABS composite material.
[0062] Preparation of Wear-Resistant ABS Composite Material in Comparative Example 1
[0063] Composition by weight of raw materials: 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant (antioxidant 1010); 0.5 part of dispersant (calcium stearate);
[0064] The filler described above is a modified filler;
[0065] The modified filler is prepared by the following method:
[0066] (1) Add carbon black and tungsten carbide into water, and also add a modifier, then stir evenly to obtain a carbon black - tungsten carbide mixture liquid; wherein, the weight ratio of carbon black, tungsten carbide, modifier and water is 3:2:0.5:10; the modifier is composed of sodium p - aminobenzenesulfonate and γ - aminopropyltriethoxysilane mixed in a weight ratio of 2:1;
[0067] (2) Put the carbon black - tungsten carbide mixture liquid into a ball mill for ball milling, and obtain a ball - milled slurry after the ball milling ends; wherein, the rotation speed of the ball mill is 300 rpm; the ball milling time is 12 h;
[0068] (3) Dry the ball - milled slurry to obtain the modified filler.
[0069] Preparation method: Mix ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly, and then put them into a twin - screw extruder for melt extrusion to obtain the wear - resistant ABS composite material.
[0070] Preparation of wear - resistant ABS composite material in Comparative Example 2
[0071] Composition of raw materials in parts by weight: 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant (antioxidant 1010); 0.5 part of dispersant (calcium stearate);
[0072] The filler is a modified filler;
[0073] The modified filler is prepared by the following method:
[0074] (1) Add carbon black and tungsten carbide into water, and also add a modifier, then stir evenly to obtain a carbon black - tungsten carbide mixture liquid; wherein, the weight ratio of carbon black, tungsten carbide, modifier and water is 3:2:0.5:10; the modifier is composed of cetyltrimethylammonium bromide and γ - aminopropyltriethoxysilane mixed in a weight ratio of 2:1;
[0075] (2) Put the carbon black - tungsten carbide mixture liquid into a ball mill for ball milling, and obtain a ball - milled slurry after the ball milling ends; wherein, the rotation speed of the ball mill is 300 rpm; the ball milling time is 12 h;
[0076] (3) Dry the ball - milled slurry to obtain the modified filler.
[0077] Preparation method: Mix ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly, and then put them into a twin - screw extruder for melt extrusion to obtain the wear - resistant ABS composite material.
[0078] Preparation of wear - resistant ABS composite material in Comparative Example 3
[0079] Raw material weight composition: 80 parts of ABS resin; 10 parts of polytetrafluoroethylene; 9 parts of filler; 0.5 part of antioxidant (antioxidant 1010); 0.5 part of dispersant (calcium stearate);
[0080] The filler described is a modified filler;
[0081] The modified filler is prepared by the following method:
[0082] (1) Add carbon black and tungsten carbide into water, and also add a modifier, stir evenly to obtain a carbon black - tungsten carbide mixture liquid; among them, the weight ratio of carbon black, tungsten carbide, modifier and water is 3:2:0.5:10; the modifier is composed of sodium p - aminobenzenesulfonate and cetyltrimethylammonium bromide mixed in a weight ratio of 1:1;
[0083] (2) Put the carbon black - tungsten carbide mixture liquid into a ball mill for ball milling, and obtain ball - milled slurry after the ball milling ends; among them, the rotation speed of the medium ball mill is 300 rpm; the ball milling time is 12 h;
[0084] (3) Dry the ball - milled slurry to obtain the modified filler.
[0085] Preparation method: Mix ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant evenly and then put them into a twin - screw extruder for melt extrusion to obtain the wear - resistant ABS composite material.
[0086] According to the method in the standard of GB / T3960 - 2016, test the volume wear rate of the wear - resistant ABS composite materials prepared in Examples 1 - 3 and Comparative Examples 1 - 3; in addition, according to the method in the standard of GB / T32596 - 2016, test the electromagnetic shielding effectiveness of the wear - resistant ABS composite materials prepared in Examples 1 - 3 and Comparative Examples 1 - 3; the results are shown in Table 1.
[0087] Table 1. Performance test results of the wear - resistant ABS composite material of the present invention
[0088]
[0089]
[0090] It can be seen from the experimental results in Table 1 that the wear - resistant ABS composite material prepared in Example 1 has a smaller volume wear rate and a higher electromagnetic shielding effectiveness; this shows that: by adding polytetrafluoroethylene with better wear - resistant performance and the filler composed of carbon black and tungsten carbide to the ABS resin in the composite material of the present invention, the prepared ABS composite material has wear - resistant performance; and at the same time, it also has an electromagnetic shielding effect.
[0091] As can be seen from the experimental results in Table 1, the volume wear rate of the wear-resistant ABS composites prepared in Examples 2 and 3 is further less than that of the wear-resistant ABS composites prepared in Example 1; this shows that: in the wear-resistant ABS composites of the present invention, adding the modified filler obtained by modifying carbon black and tungsten carbide by the method described in the present invention, compared with adding the unmodified filler composed of carbon black and tungsten carbide; it can improve the wear resistance of the wear-resistant ABS composites.
[0092] As can be seen from the experimental results in Table 1, the electromagnetic shielding effectiveness of the wear-resistant ABS composites prepared in Example 2 is further significantly higher than that of the wear-resistant ABS composites prepared in Example 1; this shows that: in the wear-resistant ABS composites of the present invention, adding the modified filler obtained by modifying carbon black and tungsten carbide by the method described in the present invention, compared with adding the unmodified filler composed of carbon black and tungsten carbide; it can significantly improve the electromagnetic shielding effect of the wear-resistant ABS composites.
[0093] As can be seen from the experimental results in Table 1, the electromagnetic shielding effectiveness of the wear-resistant ABS composites prepared in Example 3 is further significantly higher than that of the wear-resistant ABS composites prepared in Example 1; this shows that: in the preparation process of the modified filler of the present invention; further adding the modified filler obtained by modifying carbon black and tungsten carbide with a modifier composed of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane, compared with the modified filler obtained without adding a modifier; it can further improve the wear resistance of the wear-resistant ABS composites, and at the same time can further significantly improve the electromagnetic shielding effect of the wear-resistant ABS composites.
[0094] As can be seen from the experimental results in Table 1, compared with the wear-resistant ABS composites prepared in Example 1, the electromagnetic shielding effectiveness of the wear-resistant ABS composites prepared in Comparative Examples 1 to 3 has increased, but the increase is much less than that of the wear-resistant ABS composites prepared in Example 3; this shows that: the composition of the modifier of the present invention is very crucial; in the preparation process of the modified filler of the present invention; it is necessary to further add the modified filler obtained by modifying carbon black and tungsten carbide with a modifier composed of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane at the same time, compared with the modified filler obtained without adding a modifier; only then can the electromagnetic shielding effect of the wear-resistant ABS composites be further significantly improved; however, adding the modified filler obtained by modifying carbon black and tungsten carbide with any two of sodium p-aminobenzenesulfonate, cetyltrimethylammonium bromide and γ-aminopropyltriethoxysilane as the modifier, it cannot significantly improve the electromagnetic shielding effect of the wear-resistant ABS composites.
Claims
1. A wear-resistant ABS composite material, characterized in that: The raw material components include the following parts by weight: ABS resin 70-100 parts; polytetrafluoroethylene 5-20 parts; filler 1-10 parts; antioxidant 0.1-1 part; Dispersant 0.1 to 1 part.
2. The wear-resistant ABS composite material according to claim 1, characterized in that: The raw material components include the following parts by weight: ABS resin 80-90 parts; polytetrafluoroethylene 10-15 parts; filler 5-10 parts; antioxidant 0.1-0.5 parts; dispersant 0.5-1 parts.
3. The wear-resistant ABS composite material according to claim 2, characterized in that: The raw material components include the following parts by weight: ABS resin 80 parts; polytetrafluoroethylene 10 parts; filler 9 parts; antioxidant 0.5 parts; dispersant 0.5 parts.
4. The wear-resistant ABS composite material according to claim 1, characterized in that: The filler consists of carbon black and tungsten carbide.
5. The wear-resistant ABS composite material according to claim 4, characterized in that: The weight ratio of carbon black to tungsten carbide in the filler is 2-4:1-3; Most preferably, the weight ratio of carbon black to tungsten carbide in the filler is 3:
2.
6. The wear-resistant ABS composite material according to claim 1, characterized in that: The filler is a modified filler, and the modified filler is prepared by the following method: (1) adding carbon black and tungsten carbide into water and stirring evenly to obtain a carbon black-tungsten carbide mixed liquid; (2) placing the carbon black-tungsten carbide mixed liquid into a ball mill for ball milling, and obtaining a ball milled slurry after the ball milling is completed; (3) The ball mill slurry is dried to obtain the modified filler.
7. The wear-resistant ABS composite material according to claim 6, characterized in that: In step (1), the weight ratio of carbon black, tungsten carbide and water is 2-4:1-3:8-15; Most preferably, the weight ratio of carbon black, tungsten carbide and water in step (1) is 3:2:
10.
8. The wear-resistant ABS composite material according to claim 6, characterized in that: In step (2), the ball milling speed is 200 to 500 rpm; the ball milling time is 10 to 24 hours; Most preferably, the ball milling speed in step (2) is 300 rpm and the ball milling time is 12 h.
9. The wear-resistant ABS composite material according to claim 6, characterized in that: The antioxidant is antioxidant 1010; the dispersant is calcium stearate.
10. The method for preparing the wear-resistant ABS composite material according to any one of claims 1 to 9, characterized in that: The following steps are included: The ABS resin, polytetrafluoroethylene, filler, antioxidant and dispersant are mixed evenly and then put into a twin-screw extruder for melt extrusion to obtain the wear-resistant ABS composite material.