Modified ABS (Acrylonitrile Butadiene Styrene) alloy and preparation method and application thereof

Abstract

The invention provides a modified ABS (Acrylonitrile Butadiene Styrene) alloy as well as a preparation method and application thereof, and the ABS alloy comprises the following components in parts by weight: 40-80 parts of ABS resin; 2 parts by weight to 5 parts by weight of nanofibers; 10-20 parts by weight of a dispersant, and the dispersant comprises an ionic liquid; 3-6 parts by weight of a lubricant; and 2-5 parts by weight of a flexibilizer. According to the modified ABS alloy provided by the invention, the components and the contents of the components are optimized, so that the components have a synergistic effect, and the nanofibers can be uniformly dispersed in the modified ABS alloy under the action of the dispersing agent containing the ionic liquid, so that the fatigue resistance and the toughness of the ABS alloy are improved. Therefore, the modified ABS alloy provided by the invention has better fatigue resistance and toughness.

Description

Technical Field

[0001] The present invention relates to the technical field of ABS alloys, and in particular to a modified ABS alloy and a preparation method and application thereof. Background Art

[0002] ABS resin is a terpolymer composed of acrylonitrile, butadiene and styrene. The terpolymer has the advantages of high strength, good toughness, and easy processing and molding, and is widely used in industrial fields. With the popularization of its application, the requirements for it are getting higher and higher. Subsequently, ABS alloy was developed. ABS alloy is a general term for plastic polymers obtained by modifying ABS resin to achieve certain properties. However, in the relevant technology, the fatigue resistance and toughness of ABS alloy still cannot meet the growing requirements, resulting in its further application being limited. Summary of the invention

[0003] In view of the technical problem that the fatigue resistance and toughness of the above-mentioned ABS alloy cannot meet the ever-increasing requirements, the present invention provides a modified ABS alloy and a preparation method and application thereof. The modified ABS alloy has good fatigue resistance and toughness and can meet the ever-increasing requirements.

[0004] In a first aspect, the present invention provides a modified ABS alloy, wherein the ABS alloy comprises the following components in parts by weight:

[0005] ABS resin, 40 to 80 parts by weight;

[0006] Nanofiber, 2 to 5 parts by weight;

[0007] Dispersant, 10 to 20 parts by weight, wherein the dispersant comprises an ionic liquid;

[0008] Lubricant, 3 to 6 parts by weight;

[0009] Toughening agent, 2 to 5 parts by weight.

[0010] In some embodiments of the present invention, the ABS alloy further comprises the following components in parts by weight:

[0011] ABS resin, 50 to 65 parts by weight;

[0012] Nanofiber, 3 to 5 parts by weight;

[0013] Dispersant, 12 to 17 parts by weight;

[0014] Lubricant, 4 to 5 parts by weight;

[0015] Toughening agent, 3 to 4 parts by weight.

[0016] In some embodiments of the present invention, the aspect ratio of the nanofiber is (4-8):1.

[0017] In some embodiments of the present invention, the length of the nanofiber is 50 nm to 100 nm, and / or the diameter of the nanofiber is 8 nm to 15 nm.

[0018] In some embodiments of the present invention, the ionic liquid includes an imidazolium ionic liquid.

[0019] In some embodiments of the present invention, the imidazolium ionic liquid includes at least one of 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium tetrafluoroborate and 1-butyl-3-methylimidazolium hexafluorophosphate.

[0020] In some embodiments of the present invention, the lubricant includes an ester lubricant.

[0021] In some embodiments of the present invention, the toughening agent includes at least one of methyl methacrylate-butadiene-styrene copolymer, acrylonitrile-styrene-acrylate copolymer, ethylene-methyl acrylate and ethylene-butyl acrylate.

[0022] In a second aspect, the present invention provides a method for preparing a modified ABS alloy as described in any one of the embodiments of the first aspect of the present invention, comprising:

[0023] A mixing step, mixing the nanofibers and the dispersant evenly to obtain a mixture;

[0024] In the granulation step, the mixed material, ABS resin, lubricant and toughening agent are melted together and extruded to form granules to obtain the modified ABS alloy.

[0025] In a third aspect, the present invention provides an application of the modified ABS alloy as described in any embodiment of the first aspect of the present invention and / or the modified ABS alloy obtained by the preparation method as described in the second aspect of the present invention in vehicles, electronic equipment and electrical appliances.

[0026] The modified ABS alloy provided by the present invention optimizes the components and their contents to achieve synergistic effects between the components, wherein the nanofibers can be uniformly dispersed in the modified ABS alloy under the action of a dispersant containing an ionic liquid, thereby improving the fatigue resistance and toughness of the ABS alloy. Therefore, the modified ABS alloy provided by the present invention has good fatigue resistance and toughness.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. DETAILED DESCRIPTION

[0028] "Scope" disclosed in the present application is limited in the form of lower limit and upper limit, and a given range is limited by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundary of a special range. The scope limited in this way can be including end values ​​or not including end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a scope. For example, if the scope of 60-120 and 80-110 is listed for a specific parameter, it is understood that the scope of 60-110 and 80-120 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following scope can be all expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In the present application, unless otherwise specified, the numerical range "ab" represents the abbreviation of any real number combination between a and b, wherein a and b are real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" are listed in this document, and "0-5" is just an abbreviation of these numerical combinations. In addition, when a parameter is expressed as an integer ≥ 2, it is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0029] If not otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0030] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0031] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0032] Unless otherwise specified, the terms used in the present invention have the commonly understood meanings that are generally understood by those skilled in the art.

[0033] Unless otherwise specified, the values ​​of the parameters mentioned in the present invention can be measured by various test methods commonly used in the art, for example, they can be measured according to the test methods given in the embodiments of the present invention.

[0034] The following embodiments describe the contents disclosed in the present application in more detail, and these embodiments are only used for illustrative explanations, because it is obvious to those skilled in the art that various modifications and changes are made within the scope of the present application disclosure. Unless otherwise stated, all parts, percentages and ratios reported in the following embodiments are based on mass, and all reagents used in the embodiments are commercially available or synthesized according to conventional methods, and can be used directly without further processing, and the instruments used in the embodiments are commercially available.

[0035] Example 1

[0036] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0037] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of 1-butyl-3-methylimidazole chloride were mixed to obtain a mixture;

[0038] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0039] Example 2

[0040] The preparation method of this embodiment is similar to that of embodiment 1, except that: 3 parts by weight of nanofibers;

[0041] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0042] 3 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of 1-butyl-3-methylimidazole chloride were mixed to obtain a mixture;

[0043] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0044] Example 3

[0045] The preparation method of this embodiment is similar to that of embodiment 1, except that: 5 parts by weight of nanofibers;

[0046] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0047] 5 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of 1-butyl-3-methylimidazole chloride were mixed to obtain a mixture;

[0048] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0049] Example 4

[0050] The preparation method of this embodiment is similar to that of embodiment 1, except that the aspect ratio of the nanofiber is 6:1, the length is 60 nm, and the diameter is 10 nm.

[0051] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0052] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 6:1, a length of 60 nm, and a diameter of 10 nm) and 10 parts by weight of 1-butyl-3-methylimidazole chloride are mixed to obtain a mixture;

[0053] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0054] Example 5

[0055] The preparation method of this embodiment is similar to that of embodiment 1, except that the aspect ratio of the nanofiber is 8:1, the length is 80 nm, and the diameter is 10 nm.

[0056] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0057] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 8:1, a length of 80 nm, and a diameter of 10 nm) and 10 parts by weight of 1-butyl-3-methylimidazole chloride are mixed to obtain a mixture;

[0058] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0059] Example 6

[0060] The preparation method of this embodiment is similar to that of embodiment 1, except that: 10 parts by weight of 1-butyl-3-methylimidazolium bromide.

[0061] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0062] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of 1-butyl-3-methylimidazolium bromide were mixed to obtain a mixture;

[0063] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0064] Example 7

[0065] The preparation method of this embodiment is similar to that of embodiment 1, except that: 10 parts by weight of 1-butyl-3-methylimidazolium tetrafluoroborate.

[0066] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0067] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of 1-butyl-3-methylimidazolium tetrafluoroborate were mixed to obtain a mixture;

[0068] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0069] Example 8

[0070] The preparation method of this embodiment is similar to that of embodiment 1, except that 5 parts by weight of 1-butyl-3-methylimidazolium bromide and 5 parts by weight of 1-butyl-3-methylimidazolium tetrafluoroborate are used.

[0071] This embodiment provides a method for preparing a modified ABS alloy, comprising the following steps:

[0072] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm), 5 parts by weight of 1-butyl-3-methylimidazolium bromide, and 5 parts by weight of 1-butyl-3-methylimidazolium tetrafluoroborate were mixed to obtain a mixture;

[0073] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0074] Comparative Example 1

[0075] The preparation method of this comparative example is similar to that of Example 1, except that there is no nanofiber.

[0076] This comparative example provides a method for preparing a modified ABS alloy, comprising the following steps:

[0077] 10 parts by weight of 1-butyl-3-methylimidazole chloride, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0078] Comparative Example 2

[0079] The preparation method of this comparative example is similar to that of Example 1, except that: 8 parts by weight of nanofibers.

[0080] This comparative example provides a method for preparing a modified ABS alloy, comprising the following steps:

[0081] 8 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of 1-butyl-3-methylimidazole chloride were mixed to obtain a mixture;

[0082] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0083] Comparative Example 3

[0084] The preparation method of this comparative example is similar to that of Example 1, except that the dispersant is paraffin.

[0085] This comparative example provides a method for preparing a modified ABS alloy, comprising the following steps:

[0086] 2 parts by weight of nanofibers (purchased from Zhejiang Jinjiahao Green Nanomaterials Co., Ltd., with an aspect ratio of 4:1, a length of 56 nm, and a diameter of 14 nm) and 10 parts by weight of paraffin wax were mixed to obtain a mixture;

[0087] The above mixture, 50 parts by weight of ABS resin (ABS 8434, Shanghai Gaoqiao Petrochemical Co., Ltd.), ester lubricant (PETS-AP, Italy Fakir) and methyl methacrylate-butadiene-styrene copolymer were added into a twin-screw extruder for co-melting and extrusion granulation to prepare a modified ABS alloy, wherein the extrusion temperature was 280°C.

[0088] Test Section

[0089] The modified ABS alloys of the embodiments and comparative examples were subjected to the following performance tests.

[0090] (1) Tensile strength and elongation at break test

[0091] The tensile strength and elongation at break were tested in accordance with GB / T 2951.11-2008. The test results are shown in Table 1.

[0092] (2) Fatigue resistance test

[0093] A sample with a length, width and height of 80mm*20mm*2mm was bent in the middle until the force reached 80N, then returned, and the number of fractures was recorded. The test results are shown in Table 1.

[0094] Table 1 Test results of embodiments and comparative examples

[0095] Serial number Tensile strength / MPa Elongation at break / % Fatigue resistance times Example 1 62.5MPa 321％ 65032 Example 2 63.8MPa 342％ 68025 Example 3 70.2MPa 358％ 69847 Example 4 78.6MPa 416％ 70216 Example 5 82.1MPa 447％ 71983 Example 6 63.1MPa 343％ 67112 Example 7 62.9MPa 332％ 66855 Example 8 68.2MPa 351％ 69027 Comparative Example 1 21.4MPa 82％ 41522 Comparative Example 2 40.3MPa 215％ 58214 Comparative Example 3 35.3MPa 178％ 51758

[0096] According to Table 1, by comparing the test results of Examples 1-8 and Comparative Examples 1-3, it can be seen that the modified ABS alloy provided by the present invention optimizes the components and their contents to achieve synergistic effects between the components, wherein the nanofibers can be uniformly dispersed in the modified ABS alloy under the action of the dispersant containing the ionic liquid, so that the fatigue resistance and toughness of the ABS alloy are improved; the combination of 1-butyl-3-methylimidazolium bromide and 1-butyl-3-methylimidazolium tetrafluoroborate can achieve better results. Therefore, the modified ABS alloy provided by the present invention has good fatigue resistance and toughness.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A modified ABS alloy, characterized in that: The ABS alloy comprises the following components by weight: ABS resin, 40 to 80 parts by weight; Nanofiber, 2 to 5 parts by weight; Dispersant, 10 to 20 parts by weight, wherein the dispersant comprises an ionic liquid; Lubricant, 3 to 6 parts by weight; Toughening agent, 2 to 5 parts by weight.

2. The modified ABS alloy according to claim 1, characterized in that: The ABS alloy further comprises the following components by weight: ABS resin, 50 to 65 parts by weight; Nanofiber, 3 to 5 parts by weight; Dispersant, 12 to 17 parts by weight; Lubricant, 4 to 5 parts by weight; Toughening agent, 3 to 4 parts by weight.

3. The modified ABS alloy according to claim 1, characterized in that: The aspect ratio of the nanofiber is (4-8):

1.

4. The modified ABS alloy according to claim 3, characterized in that: The length of the nanofiber is 50 nm to 100 nm, and / or the diameter of the nanofiber is 8 nm to 15 nm.

5. The modified ABS alloy according to claim 1, characterized in that: The ionic liquid includes an imidazolium ionic liquid.

6. The modified ABS alloy according to claim 5, characterized in that: The imidazolium ionic liquid includes at least one of 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium tetrafluoroborate and 1-butyl-3-methylimidazolium hexafluorophosphate.

7. The modified ABS alloy according to any one of claims 1 to 6, characterized in that: The lubricant includes an ester lubricant.

8. The modified ABS alloy according to any one of claims 1 to 6, characterized in that: The toughening agent includes at least one of methyl methacrylate-butadiene-styrene copolymer, acrylonitrile-styrene-acrylate copolymer, ethylene-methyl acrylate and ethylene-butyl acrylate.

9. A method for preparing the modified ABS alloy according to any one of claims 1 to 8, characterized in that: include: A mixing step, mixing the nanofibers and the dispersant evenly to obtain a mixture; In the granulation step, the mixed material, ABS resin, lubricant and toughening agent are melted together and extruded to form granules to obtain the modified ABS alloy.

10. Use of the modified ABS alloy according to any one of claims 1 to 8 and / or the modified ABS alloy obtained by the preparation method according to claim 9 in vehicles, electronic equipment and electrical appliances.