CN116622162A - Acid and alkali corrosion resistant plastic and preparation method thereof - Google Patents
Acid and alkali corrosion resistant plastic and preparation method thereof Download PDFInfo
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- CN116622162A CN116622162A CN202310825252.7A CN202310825252A CN116622162A CN 116622162 A CN116622162 A CN 116622162A CN 202310825252 A CN202310825252 A CN 202310825252A CN 116622162 A CN116622162 A CN 116622162A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 37
- 238000005260 corrosion Methods 0.000 title claims abstract description 37
- 239000002253 acid Substances 0.000 title claims abstract description 32
- 239000003513 alkali Substances 0.000 title claims abstract description 32
- 239000004033 plastic Substances 0.000 title claims description 29
- 229920003023 plastic Polymers 0.000 title claims description 29
- 238000002360 preparation method Methods 0.000 title claims description 12
- BJEPYKJPYRNKOW-UHFFFAOYSA-N malic acid Chemical compound OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000004743 Polypropylene Substances 0.000 claims abstract description 35
- 229920001155 polypropylene Polymers 0.000 claims abstract description 35
- 239000002105 nanoparticle Substances 0.000 claims abstract description 33
- -1 polypropylene Polymers 0.000 claims abstract description 33
- 235000011090 malic acid Nutrition 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 17
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 15
- 239000002667 nucleating agent Substances 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- CTPBWPYKMGMLGS-CIAFKFPVSA-N (3s,4s,5s,6r)-1,8-bis(4-methylphenyl)octa-1,7-diene-2,3,4,5,6,7-hexol Chemical compound C1=CC(C)=CC=C1C=C(O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=CC1=CC=C(C)C=C1 CTPBWPYKMGMLGS-CIAFKFPVSA-N 0.000 claims description 2
- HCILJBJJZALOAL-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)-n'-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyl]propanehydrazide Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 HCILJBJJZALOAL-UHFFFAOYSA-N 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 16
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002244 precipitate Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000012295 chemical reaction liquid Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000013067 intermediate product Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- HDUNAIVOFOKALD-RLCYQCIGSA-N (1s,2s)-1-[(4r)-2-(4-methylphenyl)-1,3-dioxolan-4-yl]-2-[(4s)-2-(4-methylphenyl)-1,3-dioxolan-4-yl]ethane-1,2-diol Chemical compound C1=CC(C)=CC=C1C1O[C@@H]([C@@H](O)[C@H](O)[C@H]2OC(OC2)C=2C=CC(C)=CC=2)CO1 HDUNAIVOFOKALD-RLCYQCIGSA-N 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses an acid and alkali corrosion resistant polypropylene material which has the characteristics of high strength and good corrosion resistance. The components of the composition comprise polypropylene, modified nano particles, a nucleating agent and an antioxidant; wherein the modified nanoparticle is a product of coupling 2-hydroxysuccinic acid with nano silicon oxide or nano aluminum oxide. The product enhances the compatibility of the nano particles and the polymer through the coupling reaction of the 2-hydroxysuccinic acid and the nano silicon oxide or the nano aluminum oxide, so that the components can form a system with strong interaction with each other, thereby improving the mechanical property and acid and alkali corrosion resistance of the product.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to polypropylene-based acid-base corrosion-resistant plastic and a preparation method thereof.
Background
Polypropylene (PP) is a thermoplastic resin, belongs to polyolefin plastics, and has the characteristics of light weight, high strength, heat resistance, transparency and the like. The polypropylene can be manufactured into products with various shapes through extrusion, injection molding, blow molding and other processing technologies, and is widely applied to the fields of packaging, medical treatment, automobiles, electric appliances and the like. However, polypropylene is susceptible to ultraviolet rays and oxides, is easy to age, and is easy to crack under the long-term corrosion of acid-base solution or other liquids, thereby affecting normal function and use. Therefore, in order to overcome the defects of polypropylene, a proper amount of acid and alkali corrosion resistant substances are often added through modification approaches such as copolymerization, blending, filling and the like, so that the material or a main structure of the material can be protected from being dissolved or destroyed by corrosive media, the components play a synergistic effect, and the performance of the modified material is integrally improved. At present, the acid and alkali corrosion resistant polypropylene modification technology can utilize a physical method, a chemical method and a modification method for changing the crystal form of the polymer. However, in the blending modification of these systems, due to the compatibility problem between the various components, the components are separated during the blending process, which tends to make the strength of the composite worse, and thus the composite material cannot be applied to more fields.
Chinese patent CN102838866a discloses a nano modified material of polyurethane and polypropylene, which comprises a polyurethane-polypropylene plasticizer, a polyolefin and polyvinyl chloride functional modifier, a nano material, a stabilizer and an auxiliary agent. However, the nano material cannot be uniformly dispersed in the polypropylene matrix, and the strength of the composite material is poor.
Chinese patent CN103073798B discloses a polypropylene composition for plastic liner of water heater and its preparation method, its formula is copolymerized polypropylene, talcum powder/calcium carbonate filler, antioxidant, stabilizing agent and auxiliary agent. However, since the talcum powder/calcium carbonate particles generate stress with polypropylene, weak points exist on the internal structure of the product, and the strength of the composite material is poor.
Therefore, there is a need to develop an acid-base corrosion resistant plastic with better compatibility between the components.
Disclosure of Invention
Based on the defects existing in the prior art, the invention aims to provide the acid and alkali corrosion resistant polypropylene material which has the advantages of light weight, good mechanical property, good acid and alkali corrosion resistance and the like. The main components of the acid and alkali corrosion resistant polypropylene material comprise polypropylene, modified nano particles, a nucleating agent and an antioxidant. Wherein the modified nanoparticle is a product of coupling 2-hydroxysuccinic acid with nano silicon oxide or nano aluminum oxide.
According to the invention, through the coupling reaction of the 2-hydroxysuccinic acid and the nano silicon oxide or nano aluminum oxide, the 2-hydroxysuccinic acid can be subjected to esterification reaction with hydroxyl groups on the surfaces of the nano particles to form stable ester bonds, so that the properties of the surfaces of the nano particles are changed, the dispersibility and stability of the nano particles in a polymer are improved, and the compatibility between the nano particles and a polypropylene matrix is increased;
the hydroxyl groups on the surface of the nano silicon oxide or nano aluminum oxide and the hydroxyl groups in the 2-hydroxysuccinic acid molecules can form hydrogen bonds, so that the intermolecular interaction is increased, a more compact structure is promoted to be formed between the hydroxyl groups and the 2-hydroxysuccinic acid molecules, and the performance and the stability of the composite material are further improved.
Therefore, the property of the nano particles can be effectively improved and the application performance of the polypropylene material can be improved through the coupling reaction of the 2-hydroxysuccinic acid and the nano silicon oxide or the nano aluminum oxide.
The acid and alkali corrosion resistant polypropylene material comprises polypropylene, modified nano particles, a nucleating agent and an antioxidant.
Wherein the modified nano particles are the products of coupling 2-hydroxysuccinic acid with nano silicon oxide or nano aluminum oxide.
Further, the molecular weight of the polypropylene is 8-15w;
further, the nucleating agent is selected from the group consisting of bis (p-methylbenzylidene) sorbitol;
further, the antioxidant is selected from the group consisting of antioxidant 1076, antioxidant 1024, or antioxidant 1010;
further, the acid and alkali corrosion resistant plastic comprises the following components in parts by weight:
the invention also aims to provide a preparation method of the acid and alkali corrosion resistant polypropylene plastic, which comprises the following steps:
s1, preparing modified nano particles: dissolving 2-hydroxysuccinic acid in water, then adding nano silicon oxide and nano aluminum oxide, heating to 90-100 ℃ and performing ultrasonic reaction, then centrifugally washing, and drying at normal temperature to obtain the modified nano particles;
s2, blending the modified nano particles, polypropylene, a nucleating agent, an antioxidant and other components;
s3, feeding the blended materials into an extruder for melt blending, wherein the melting temperature is 180-200 ℃, and extruding and molding to obtain the acid and alkali corrosion resistant plastic.
Further, the molar ratio of the 2-hydroxysuccinic acid, the nano silicon oxide and the nano aluminum oxide in the S1 is 1:0.3:0.3-1:0.5:0.5;
further, the heating temperature in the step S1 is 90-100 ℃;
further, the melting temperature of S3 is 180-200 ℃.
The invention has the following beneficial effects:
1. by the preparation method, the acid and alkali corrosion resistance of the polypropylene material can be improved, and the material or the main structure can be protected from being dissolved or damaged by corrosive media.
2. Through the coupling reaction of the 2-hydroxysuccinic acid and the nano silicon oxide or nano aluminum oxide, the surface property of the nano particles is effectively improved, the dispersibility and the compatibility of the nano particles in the polymer are improved, the compatibility between the nano particles and the polypropylene matrix is increased, and the strength and the stability of the polypropylene material are enhanced.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following examples are set forth. The starting materials, reactions and workup procedures used in the examples are those commonly practiced in the market and known to those skilled in the art unless otherwise indicated.
The polypropylene of the embodiment of the invention is purchased from Shanghai real plasticizing limited company, and the model is PPH-T03;
the 2-hydroxysuccinic acid in the embodiment of the invention is purchased from De Chemie chemical Co., guangzhou City;
the nanometer silicon oxide and the nanometer aluminum oxide in the embodiment of the invention have the model of VK-SP30S, the model of the nanometer aluminum oxide is VK-L06, and the nanometer silicon oxide and the nanometer aluminum oxide are purchased from Hangzhou Wanzhou New materials Co., ltd;
the nucleating agent described in the examples of the present invention, di (p-methylbenzylidene) sorbitol, was purchased from Hubei zifei pharmaceutical chemicals Co., ltd;
the antioxidant 1010 in the embodiment of the invention is purchased from Nanjing Milan chemical industry Co., ltd;
the parts in the embodiment of the invention refer to parts by weight.
Example 1
An acid and alkali corrosion resistant plastic comprises the following components in parts by weight:
the preparation of the modified nanoparticles is as follows:
s1, adding 10mmol of 2-hydroxysuccinic acid into water, stirring at 50 ℃ until the 2-hydroxysuccinic acid is completely dissolved, adding 0.3mmol of nano silicon oxide and 0.3mmol of nano aluminum oxide into the solution, and continuously stirring until the 2-hydroxysuccinic acid is uniformly dispersed to obtain an intermediate product;
and S2, heating the intermediate product to 95 ℃, and simultaneously carrying out ultrasonic treatment under the condition of ultrasonic electric power of 350W for 40 minutes. Stopping heating and ultrasonic reaction after the reaction is completed, and cooling the reaction liquid to room temperature;
s3, centrifugally separating the reaction liquid, and pouring out a supernatant liquid to leave a precipitate. The precipitate was washed with deionized water and repeated 3 times. And placing the washed precipitate in a dryer, and drying at normal temperature until the precipitate is completely dried to obtain the modified nano particles.
The preparation of the acid and alkali corrosion resistant plastic is as follows:
s1, weighing 100 parts of polypropylene, 10 parts of modified nano particles, 0.3 part of nucleating agent and 2 parts of antioxidant 1010, and putting into a high-speed mixer for fully mixing until a uniform mixture is obtained;
s2, placing the mixture into a double-screw extruder, setting the melting temperature of the extruder to be 180 ℃ and the melting time to be 20 minutes, and extruding and molding the melted material to obtain the acid and alkali corrosion resistant plastic.
Example 2
An acid and alkali corrosion resistant plastic comprises the following components in parts by weight:
the preparation of the modified nanoparticles is as follows:
s1, adding 10mmol of 2-hydroxysuccinic acid into water, stirring at 50 ℃ until the 2-hydroxysuccinic acid is completely dissolved, adding 0.3mmol of nano silicon oxide and 0.3mmol of nano aluminum oxide into the solution, and continuously stirring until the 2-hydroxysuccinic acid is uniformly dispersed to obtain an intermediate product;
and S2, heating the intermediate product to 95 ℃, and simultaneously carrying out ultrasonic treatment under the condition of ultrasonic electric power of 350W for 40 minutes. Stopping heating and ultrasonic reaction after the reaction is completed, and cooling the reaction liquid to room temperature;
s3, centrifugally separating the reaction liquid, and pouring out a supernatant liquid to leave a precipitate. The precipitate was washed with deionized water and repeated 3 times. And placing the washed precipitate in a dryer, and drying at normal temperature until the precipitate is completely dried to obtain the modified nano particles.
The preparation of the acid and alkali corrosion resistant plastic is as follows:
s1, weighing 100 parts of polypropylene, 15 parts of modified nano particles, 0.3 part of nucleating agent and 2 parts of antioxidant 1010, and putting into a high-speed mixer for fully mixing until a uniform mixture is obtained;
s2, placing the mixture into a double-screw extruder, setting the melting temperature of the extruder to be 180 ℃ and the melting time to be 20 minutes, and extruding and molding the melted material to obtain the acid and alkali corrosion resistant plastic.
Comparative example 1
The preparation method, the components and the parts by mass of the plastic in comparative example 1 are the same as those of example 1, except that the plastic in comparative example 1 does not contain modified nano-silica and modified nano-alumina, but is replaced with conventional nano-silica and nano-alumina in equal parts by mass.
Test example 1
The acid and alkali corrosion resistant plastic granules obtained in the above example 1 and comparative examples 1 to 2 were dried, and then prepared into mechanical property test bars by injection, and 5 samples were taken each and subjected to mechanical property test. The test method was carried out according to the ASTM D638-02 plastic tensile property test standard.
Specifically, the prepared samples are placed in an outdoor and outdoor environment for 60 days (wherein the average daily temperature is 24 ℃, 17 days are sunny days, 29 days are cloudy or cloudy, and 14 days are rainy days), and then mechanical property tests are carried out and data are recorded to see whether the mechanical property difference of the samples in the same group is obvious.
The results obtained are shown in Table 1.
Table 1 mechanical property test of corrosion-resistant acid-base plastics obtained in examples and comparative examples
As can be seen from table 1, the tensile strength of the different samples of the different groups showed a large difference after long-term exposure in outdoor open air environment, and the average tensile strength of the sample of example 1 was slightly lower than that of the sample of comparative example 1, indicating that the overall aging degree was slightly lower;
the samples in example 1 have a relatively smooth tensile strength value, and the maximum difference in tensile strength is 0.8MPa, which indicates that the modified nanoparticles in example 1 have a relatively uniform dispersion degree, the modified nanoparticles and the polypropylene matrix form a more compact and stable structure, while the samples in comparative example 1 have relatively large differences in tensile properties from each other, and the maximum difference in tensile strength is 1.8MPa, which indicates that the nanoparticles in comparative example 1 have a non-uniform distribution of the internal components of the material.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The acid and alkali corrosion resistant plastic is characterized by comprising the components of polypropylene, modified nano particles, a nucleating agent and an antioxidant;
wherein the modified nano particles are the products of coupling 2-hydroxysuccinic acid with nano silicon oxide or nano aluminum oxide.
2. The acid and alkali corrosion resistant plastic according to claim 1, wherein in the acid and alkali corrosion resistant plastic, the mass fraction of polypropylene is 100-120; the mass portion of the modified nano particles is 10-20 portions; the nucleating agent is 0.2-0.5 part by mass; the antioxidant is 1-3 parts by mass.
3. The acid and alkali corrosion resistant plastic of claim 1, wherein the polypropylene has a molecular weight of 8-15w.
4. The acid and alkali corrosion resistant plastic of claim 1, wherein said nucleating agent is selected from the group consisting of di (p-methylbenzylidene) sorbitol.
5. The acid and alkali corrosion resistant plastic of claim 1, wherein the antioxidant is selected from the group consisting of antioxidant 1076, antioxidant 1024, and antioxidant 1010.
6. The method for producing an acid and alkali corrosion resistant plastic according to any one of claims 1 to 5, comprising the steps of:
s1, preparation of modified nano particles: dissolving 2-hydroxysuccinic acid in water, then adding nano silicon oxide and nano aluminum oxide, heating and performing ultrasonic reaction, then centrifugally washing, and drying at normal temperature to obtain the modified nano particles;
s2, blending the modified nano particles with the rest components, and feeding the mixture into a double-screw extruder for melt blending, and performing extrusion molding to obtain the acid and alkali corrosion resistant plastic.
7. The method for preparing acid and alkali corrosion resistant plastic according to claim 6, wherein the molar ratio of the 2-hydroxysuccinic acid, the nano silicon oxide and the nano aluminum oxide is 1:0.3:0.3-1:0.5:0.5.
8. The method for producing an acid and alkali corrosion resistant plastic according to claim 6, wherein the heating temperature is 90 ℃ to 100 ℃.
9. The method for producing an acid and alkali corrosion resistant plastic according to claim 6, wherein the melting temperature is 180 ℃ to 200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310825252.7A CN116622162A (en) | 2023-07-06 | 2023-07-06 | Acid and alkali corrosion resistant plastic and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310825252.7A CN116622162A (en) | 2023-07-06 | 2023-07-06 | Acid and alkali corrosion resistant plastic and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116622162A true CN116622162A (en) | 2023-08-22 |
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|---|---|---|---|
| CN202310825252.7A Pending CN116622162A (en) | 2023-07-06 | 2023-07-06 | Acid and alkali corrosion resistant plastic and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN116622162A (en) |
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- 2023-07-06 CN CN202310825252.7A patent/CN116622162A/en active Pending
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