CN112876840A - PA (polyamide) environment-friendly plastic with high impact strength and preparation method thereof - Google Patents
PA (polyamide) environment-friendly plastic with high impact strength and preparation method thereof Download PDFInfo
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- CN112876840A CN112876840A CN202110222018.6A CN202110222018A CN112876840A CN 112876840 A CN112876840 A CN 112876840A CN 202110222018 A CN202110222018 A CN 202110222018A CN 112876840 A CN112876840 A CN 112876840A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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Abstract
The invention discloses a PA environment-friendly plastic with high impact strength and a preparation method thereof, wherein the PA environment-friendly plastic comprises the following raw materials, by weight, 40-50 parts of polyamide resin, 10-15 parts of polyethylene, 1-3 parts of activated carbon, 1-2 parts of antioxidant, 1-3 parts of filler, 0.2-0.3 part of lubricant and 0.05-0.06 part of plasticizer, the antioxidant is prepared from p-phenylenediamine and 2-bromobutane, the plasticizer is at least one of diester phthalate, butyl benzyl phthalate and diisononyl phthalate, the lubricant is zinc stearate, and the filler is at least one of calcium carbonate, talc and mica. According to the preparation method, p-phenylenediamine is used as a raw material to react with 2-bromobutane to prepare the antioxidant N, N' -di-sec-butyl-p-phenylenediamine, so that the oxidation resistance of the product can be improved, and the filler and the activated carbon are added to improve the impact strength of the product, wherein the activated carbon is modified in the application, so that the impact strength and the conductivity of the product can be improved.
Description
Technical Field
The invention relates to the technical field of PA plastic preparation, in particular to a PA environment-friendly plastic with high impact strength and a preparation method thereof.
Background
The PA resin is also called polyamide resin, is usually prepared from dibasic acid and diamine, has good chemical resistance and acid and alkali resistance, contains amino, carbonyl, amide and other groups in the structure, and has excellent gluing performance.
The antioxidant is a common additive in plastics, has the effects of slowing down oxidation and improving the stability of a product, can capture free radicals generated in the oxidation of a polymer by adding the antioxidant, and decomposes the free radicals to generate polymer hydroperoxide, so that the chain reaction is stopped, the oxidation resistance of the product is further improved, and the service life of the plastic is prolonged.
Conductive plastics are widely used in electronic and integrated circuits because they are made conductive by mixing a resin with a conductive substance.
In the preparation process of the plastic, a large amount of auxiliary agents are needed, wherein the auxiliary agents contain a large amount of toxic substances, and the comprehensive performance of the product is reduced due to excessive addition of the auxiliary agents, so that the PA environment-friendly plastic with high impact strength and the preparation method thereof are invented.
Disclosure of Invention
The invention aims to provide PA environment-friendly plastic with high impact strength and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the PA environment-friendly plastic with high impact strength comprises, by weight, 40-50 parts of polyamide resin, 10-15 parts of polyethylene, 1-3 parts of activated carbon, 1-2 parts of antioxidant, 1-3 parts of filler, 0.2-0.3 part of lubricant and 0.05-0.06 part of plasticizer.
Further, the antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
Further, the plasticizer is at least one of diester phthalate, butyl benzyl phthalate and diisononyl phthalate.
Further, the lubricant is zinc stearate.
Further, the filler is at least one of calcium carbonate, talc and mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, stirring, adding 2-bromobutane and sodium hydroxide, stirring, and heating to obtain an antioxidant;
(2) crushing the active carbon, adding sulfuric acid, stirring, filtering, and washing with deionized water to obtain modified active carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, stirring, heating, adding modified activated carbon, adding thiourea and deionized water, stirring and heating to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Further, the concrete steps are as follows,
(1) adding ethanol into p-phenylenediamine, stirring, adding 2-bromobutane and saturated sodium hydroxide, stirring, heating at 75-80 ℃ for 7-8 hours to obtain an antioxidant;
the application uses p-phenylenediamine as a raw material, the reason is that the p-phenylenediamine has excellent oxidation resistance and the simplest diamine structure, because the p-phenylenediamine is in a third carcinogenic list, if the addition of the p-phenylenediamine needs to be strictly limited, the addition of the p-phenylenediamine is insufficient, and the oxidation resistance of the product plastic is reduced, the p-phenylenediamine and 2-bromobutane are adopted for reaction, ethanol is added as a solvent, saturated sodium hydroxide is used as an acid binding agent for reaction, the antioxidant N, N '-di-sec-butyl-p-phenylenediamine can be generated, the N, N' -di-sec-butyl-p-phenylenediamine has excellent oxidation resistance, the effect is better than that of directly adding the p-phenylenediamine, the purpose of oxidation resistance can be achieved only by adding a small amount of the p-phenylenediamine, the harm of the product plastic to a human body is reduced, and the oxidation resistance of the product plastic can be improved, in order to control the reaction effect and the conversion rate, the mass ratio of the using amount of the ethanol solvent to the p-phenylenediamine is limited to 4-5:1, so that the oxidation resistance of the product is further ensured.
(2) Crushing the activated carbon, adding sulfuric acid, stirring for 1.5-2h, filtering, and washing with deionized water to obtain modified activated carbon;
this application uses active carbon and filler to cooperate, and then increases the impact strength of product, because the electric conductive property of product can also be increased to the self characteristic of active carbon, can increase the range of application of product plastics.
The activated carbon is treated by using sulfuric acid and is also used as a catalyst, the activated carbon is treated by using acid which is a very common means, sulfuric acid, nitric acid, mixed acid and the like can be used, but the activated carbon used in the method is also used as a catalyst on the basis of activation, wherein the main raw materials are alkyl bromide and imidazole, hydrogen, sulfur and the like ions of the acid need to be limited due to the characteristics of the carbon of the activated carbon, and in order to improve the conversion rate, the activated carbon is treated by using the sulfuric acid, is washed by using deionized water until the activated carbon does not contain the sulfur ions, and compared with the traditional method of adding minerals, the activated carbon is more environment-friendly.
(3) Adding 1- (3-aminopropyl) imidazole into an antioxidant, stirring, heating at the temperature of 60-65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating at the temperature of 180-190 ℃, and maintaining for 8-10 hours to obtain a mixture A;
in the application, p-phenylenediamine and 2-bromobutane are used for reaction in the step (1) to obtain the antioxidant, wherein in order to ensure that the p-phenylenediamine does not have residue and complete reaction is carried out to reduce the harm degree to human bodies, the mass ratio of the added p-phenylenediamine to the 2-bromobutane is limited to be 3.2-3.8: 1, wherein 2-bromobutane tries excessively, and then the antioxidant property of the product is guaranteed, redundant 2-bromobutane is treated in the method, 1- (3-aminopropyl) imidazole is added for reaction, modified activated carbon obtained in the step (2) is added in the reaction process, and then an imidazole bromine salt compound can be obtained, and then the imidazole bromine salt compound is matched with thiourea added in the reaction process, so that secondary modification treatment can be carried out on the modified activated carbon, and further the conductive strength of the activated carbon can be enhanced.
The application needs to limit the added 1- (3-aminopropyl) imidazole, because a large amount of 2-bromobutane is consumed in the step (1) and the content of the 2-bromobutane is lower along with the increase of the temperature, the adding amount needs to be strictly controlled in order to prevent the 1- (3-aminopropyl) imidazole from being excessive, the mass ratio of the added 1- (3-aminopropyl) imidazole to the 2-bromobutane is in the range of 0.56-0.58:1, and the added 1- (3-aminopropyl) imidazole can be ensured not to be excessive.
(4) And mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Further, the mass ratio of the ethanol to the p-phenylenediamine added in the step (1) is 4-5: 1.
Further, the mass ratio of the p-phenylenediamine to the 2-bromobutane added in the step (1) is 3.2-3.8: 1.
further, the mass ratio of the 1- (3-aminopropyl) imidazole to the 2-bromobutane added in the step (2) is 0.56-0.58: 1.
Compared with the prior art, the invention has the following beneficial effects: according to the preparation method, p-phenylenediamine is used as a raw material to react with 2-bromobutane to prepare the antioxidant N, N' -di-sec-butyl-p-phenylenediamine, so that the oxidation resistance of the product can be improved, and the filler and the activated carbon are added to improve the impact strength of the product, wherein the activated carbon is modified according to the application, the modified activated carbon can be used as a catalyst, the impact strength and the conductivity of the product can be improved, and the application range of the product is enlarged.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The PA environment-friendly plastic with high impact strength comprises, by weight, 40 parts of polyamide resin, 10 parts of polyethylene, 1 part of activated carbon, 1 part of antioxidant, 1 part of filler, 0.2 part of lubricant and 0.05 part of plasticizer.
The antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate and talc.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, wherein the mass ratio of the ethanol to the p-phenylenediamine is 4:1, stirring, adding 2-bromobutane and saturated sodium hydroxide, and the mass ratio of the added p-phenylenediamine to the 2-bromobutane is 3.2: 1, stirring and heating at 75 ℃ for 7 hours to obtain an antioxidant;
(2) crushing the activated carbon, adding sulfuric acid, stirring for 1.5h, filtering, and washing with deionized water to obtain modified activated carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, wherein the mass ratio of the added 1- (3-aminopropyl) imidazole to 2-bromobutane is 0.56:1, stirring, heating, wherein the temperature is 60 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating, wherein the temperature is 180 ℃, and maintaining for 8 hours to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Example 2
The PA environment-friendly plastic with high impact strength comprises the following raw materials, by weight, 45 parts of polyamide resin, 12 parts of polyethylene, 2 parts of activated carbon, 1 part of antioxidant, 2 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
The plasticizer is butyl benzyl phthalate or diisononyl phthalate.
The lubricant is zinc stearate.
The filler is talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, wherein the mass ratio of the ethanol to the p-phenylenediamine is 5:1, stirring, adding 2-bromobutane and saturated sodium hydroxide, and the mass ratio of the added p-phenylenediamine to the 2-bromobutane is 3.8: 1, stirring and heating at the temperature of 80 ℃ for 7-8 hours to obtain an antioxidant;
(2) crushing activated carbon, adding sulfuric acid, stirring for 2 hours, filtering, and washing with deionized water to obtain modified activated carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, wherein the mass ratio of the added 1- (3-aminopropyl) imidazole to 2-bromobutane is 0.58:1, stirring, heating to 65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating to 190 ℃, and maintaining for 10 hours to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Example 3
The PA environment-friendly plastic with high impact strength comprises, by weight, 50 parts of polyamide resin, 15 parts of polyethylene, 3 parts of activated carbon, 2 parts of antioxidant, 3 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate, talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, wherein the mass ratio of the ethanol to the p-phenylenediamine is 5:1, stirring, adding 2-bromobutane and saturated sodium hydroxide, and the mass ratio of the added p-phenylenediamine to the 2-bromobutane is 3.8: 1, stirring and heating at the temperature of 80 ℃ for 8 hours to obtain an antioxidant;
(2) crushing activated carbon, adding sulfuric acid, stirring for 2 hours, filtering, and washing with deionized water to obtain modified activated carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, wherein the mass ratio of the added 1- (3-aminopropyl) imidazole to 2-bromobutane is 0.58:1, stirring, heating to 65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating to 190 ℃, and maintaining for 10 hours to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Comparative example 1
The PA environment-friendly plastic with high impact strength comprises, by weight, 50 parts of polyamide resin, 15 parts of polyethylene, 3 parts of activated carbon, 2 parts of antioxidant, 3 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is antioxidant 1010 and antioxidant 168.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate, talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) crushing the activated carbon to obtain activated carbon powder;
(2) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, adding antioxidant and activated carbon powder, stirring, adding plasticizer and filler, stirring, adding lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Comparative example 2
The PA environment-friendly plastic with high impact strength comprises, by weight, 50 parts of polyamide resin, 15 parts of polyethylene, 3 parts of activated carbon, 2 parts of antioxidant, 3 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate, talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, wherein the mass ratio of the ethanol to the p-phenylenediamine is 5:1, stirring, adding 2-bromobutane and saturated sodium hydroxide, and the mass ratio of the added p-phenylenediamine to the 2-bromobutane is 3.8: 1, stirring and heating at the temperature of 80 ℃ for 8 hours to obtain an antioxidant;
(2) crushing the activated carbon, adding nitric acid, stirring for 2 hours, filtering, and washing with deionized water to obtain modified activated carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, wherein the mass ratio of the added 1- (3-aminopropyl) imidazole to 2-bromobutane is 0.58:1, stirring, heating to 65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating to 190 ℃, and maintaining for 10 hours to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Comparative example 3
The PA environment-friendly plastic with high impact strength comprises, by weight, 50 parts of polyamide resin, 15 parts of polyethylene, 3 parts of activated carbon, 2 parts of antioxidant, 3 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate, talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, wherein the mass ratio of the ethanol to the p-phenylenediamine is 5:1, stirring, adding 2-bromobutane and saturated sodium hydroxide, and the mass ratio of the added p-phenylenediamine to the 2-bromobutane is 3.8: 1, stirring and heating at the temperature of 80 ℃ for 8 hours to obtain an antioxidant;
(2) mixing sulfuric acid and nitric acid to prepare mixed acid, crushing activated carbon, adding the mixed acid, stirring for 2 hours, filtering, and washing with deionized water to obtain modified activated carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, wherein the mass ratio of the added 1- (3-aminopropyl) imidazole to 2-bromobutane is 0.58:1, stirring, heating to 65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating to 190 ℃, and maintaining for 10 hours to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Comparative example 4
The PA environment-friendly plastic with high impact strength comprises, by weight, 50 parts of polyamide resin, 15 parts of polyethylene, 2 parts of antioxidant, 3 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate, talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
(1) adding ethanol into p-phenylenediamine, wherein the mass ratio of the ethanol to the p-phenylenediamine is 5:1, stirring, adding 2-bromobutane and saturated sodium hydroxide, and the mass ratio of the added p-phenylenediamine to the 2-bromobutane is 3.8: 1, stirring and heating at the temperature of 80 ℃ for 8 hours to obtain an antioxidant;
(2) adding 1- (3-aminopropyl) imidazole into an antioxidant, wherein the mass ratio of the added 1- (3-aminopropyl) imidazole to 2-bromobutane is 0.58:1, stirring, heating to 65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating to 190 ℃, and maintaining for 10 hours to obtain a mixture A;
(3) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Comparative example 5
The PA environment-friendly plastic with high impact strength comprises, by weight, 50 parts of polyamide resin, 15 parts of polyethylene, 3 parts of activated carbon, 2 parts of antioxidant, 3 parts of filler, 0.3 part of lubricant and 0.06 part of plasticizer.
The antioxidant is p-phenylenediamine.
The plasticizer is phthalic diester and butyl benzyl phthalate.
The lubricant is zinc stearate.
The filler is calcium carbonate, talc or mica.
A preparation method of PA environment-friendly plastic with high impact strength comprises the following steps,
and mixing the mixture A with polyamide and polyethylene, heating to a molten state, adding an antioxidant, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
Experiment of
Using example 3 as a control, comparative example 1, comparative example 2, comparative example 3 and comparative example 4 were set, wherein in comparative example 1, the antioxidant 1010 and the antioxidant 168 were directly used, in comparative example 2, the activated carbon was treated with nitric acid, in comparative example 3, the activated carbon was treated with mixed acid, in comparative example 4, the activated carbon was not added, and in comparative example 5, the antioxidant p-phenylenediamine was directly added.
Experiment one: the impact strength tests of examples 1, 2, 3, 4 and 5 were carried out according to GB/T1843-2008, and the results are as follows according to GB/T15662-,
| experimental group | Impact strength KJ/m2 | Surface resistance omega |
| Example 1 | 32.45 | 9.34×103 |
| Example 2 | 33.69 | 4.78×103 |
| Example 3 | 35.68 | 2.48×103 |
| Comparative example 1 | 34.45 | 4.65×105 |
| Comparative example 2 | 33.46 | 3.46×104 |
| Comparative example 3 | 32.87 | 8.68×104 |
| Comparative example 4 | 28.75 | 3.46×108 |
| Comparative example 5 | 36.15 | 4.58×108 |
Watch 1
Experiment two: the samples of example 1, example 2, example 3, comparative example 1, comparative example 2, comparative example 3, comparative example 4 and comparative example 5 of the first experiment were subjected to an artificial accelerated aging test according to GB/T7141-,
watch two
Data analysis
In comparative example 1, the antioxidant 1010 and the antioxidant 168 were directly used, and the antioxidant was prepared without using a method of reacting p-phenylenediamine and 2-bromobutane, and although the antioxidant property was better, the conductivity was inferior to that of example 1, example 2 and example 3 in that the activated carbon was not modified several times.
In the comparative example 2, the activated carbon is treated by using nitric acid, and the activated carbon is modified by using nitric acid, so that the effect is poorer than that of modification by using sulfuric acid, and when the activated carbon is used as a catalyst, the activity level has a certain difference, so that the conductivity of the product is different.
In comparative example 3 in which activated carbon was treated with mixed acid, it can be concluded that the effect of using sulfuric acid is greater than that of nitric acid than that of mixed acid by comparing examples 1, 2 and 3 with comparative examples 2 and 3.
In comparative example 4, activated carbon was not added, so that the impact strength and conductivity of the product were directly decreased, but the oxidation resistance was maintained good.
In comparative example 5, the antioxidant performance was inferior to that of example 1, example 2 and example 3 in terms of oxidation resistance by directly adding an equal part by weight of p-phenylenediamine as an antioxidant.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A PA environment-friendly plastic with high impact strength is characterized in that: the environment-friendly plastic comprises, by weight, 40-50 parts of polyamide resin, 10-15 parts of polyethylene, 1-3 parts of activated carbon, 1-2 parts of antioxidant, 1-3 parts of filler, 0.2-0.3 part of lubricant and 0.05-0.06 part of plasticizer.
2. The PA environment-friendly plastic with high impact strength as claimed in claim 1, wherein: the antioxidant is prepared from p-phenylenediamine and 2-bromobutane.
3. The PA environment-friendly plastic with high impact strength as claimed in claim 1, wherein: the plasticizer is at least one of phthalic diester, butyl benzyl phthalate and diisononyl phthalate.
4. The PA environment-friendly plastic with high impact strength as claimed in claim 1, wherein: the lubricant is zinc stearate.
5. The PA environment-friendly plastic with high impact strength as claimed in claim 1, wherein: the filler is at least one of calcium carbonate, talc and mica.
6. A preparation method of PA environment-friendly plastic with high impact strength is characterized by comprising the following steps: the steps are as follows,
(1) adding ethanol into p-phenylenediamine, stirring, adding 2-bromobutane and sodium hydroxide, stirring, and heating to obtain an antioxidant;
(2) crushing the active carbon, adding sulfuric acid, stirring, filtering, and washing with deionized water to obtain modified active carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, stirring, heating, adding modified activated carbon, adding thiourea and deionized water, stirring and heating to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
7. The preparation method of the PA environment-friendly plastic with high impact strength as claimed in claim 6, wherein the preparation method comprises the following steps: the specific steps are as follows,
(1) adding ethanol into p-phenylenediamine, stirring, adding 2-bromobutane and saturated sodium hydroxide, stirring, heating at 75-80 ℃ for 7-8 hours to obtain an antioxidant;
(2) crushing the activated carbon, adding sulfuric acid, stirring for 1.5-2h, filtering, and washing with deionized water to obtain modified activated carbon;
(3) adding 1- (3-aminopropyl) imidazole into an antioxidant, stirring, heating at the temperature of 60-65 ℃, adding modified activated carbon, adding thiourea and deionized water, stirring, heating at the temperature of 180-190 ℃, and maintaining for 8-10 hours to obtain a mixture A;
(4) and mixing the mixture A with polyamide and polyethylene, heating to a molten state, stirring, adding a plasticizer and a filler, stirring, adding a lubricant after uniformly stirring, and performing compression molding to obtain the environment-friendly plastic.
8. The preparation method of the PA environment-friendly plastic with high impact strength as claimed in claim 7, wherein the preparation method comprises the following steps: the mass ratio of the ethanol to the p-phenylenediamine added in the step (1) is 4-5: 1.
9. The preparation method of the PA environment-friendly plastic with high impact strength as claimed in claim 7, wherein the preparation method comprises the following steps: the mass ratio of the p-phenylenediamine to the 2-bromobutane added in the step (1) is 3.2-3.8: 1.
10. the preparation method of the PA environment-friendly plastic with high impact strength as claimed in claim 7, wherein the preparation method comprises the following steps: the mass ratio of the 1- (3-aminopropyl) imidazole to the 2-bromobutane added in the step (2) is 0.56-0.58: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110222018.6A CN112876840A (en) | 2021-02-28 | 2021-02-28 | PA (polyamide) environment-friendly plastic with high impact strength and preparation method thereof |
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| CN202110222018.6A CN112876840A (en) | 2021-02-28 | 2021-02-28 | PA (polyamide) environment-friendly plastic with high impact strength and preparation method thereof |
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| CN111115629A (en) * | 2019-12-27 | 2020-05-08 | 暨南大学 | High-specific-surface-area carbon material based on waste tobacco stems and preparation method and application thereof |
| CN111200128A (en) * | 2020-03-12 | 2020-05-26 | 河南电池研究院有限公司 | Preparation method of high-performance positive electrode material for inhibiting transition metal ions in positive electrode material of lithium ion battery from dissolving out |
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| CN111115629A (en) * | 2019-12-27 | 2020-05-08 | 暨南大学 | High-specific-surface-area carbon material based on waste tobacco stems and preparation method and application thereof |
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