CN110951073A - Copolymerized nylon 612 material - Google Patents
Copolymerized nylon 612 material Download PDFInfo
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- CN110951073A CN110951073A CN201911291740.4A CN201911291740A CN110951073A CN 110951073 A CN110951073 A CN 110951073A CN 201911291740 A CN201911291740 A CN 201911291740A CN 110951073 A CN110951073 A CN 110951073A
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- nylon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/265—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids from at least two different diamines or at least two different dicarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/28—Preparatory processes
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
Abstract
The invention provides a copolymerized nylon 612 material which is prepared from the following raw materials in parts by weight: nylon 612 monomer: 88-97 parts; nylon 6I monomer: 3-12 parts; antioxidant: 0.08-0.2 part; distilled water: 100 parts, compared with the prior art, the invention has the following beneficial effects: the product prepared by the method has good surface brightness, good rigidity, small molding shrinkage and good chemical resistance, and can be applied to highlight spraying-free chemical solvent-resistant precision products besides meeting normal application; in addition, the preparation method is simple, all reactions are carried out in one reaction kettle, and compared with the prior art, the method omits the procedures of salt preparation, concentration and the like, and has obvious advantages in economy, environment and operation.
Description
Technical Field
The invention relates to a copolymerized nylon 612 material, and belongs to the technical field of materials.
Background
The nylon 612, also known as polyamide 612 or PA612, has the characteristics of tensile strength, impact strength, fatigue resistance, good wear resistance and the like, and also has the advantages of low water absorption, small density, good dimensional stability and the like. The preparation method is mainly used for preparing high-grade toothbrushes and other industrial bristles, can also be used for preparing precision mechanical parts, wire and cable coating layers, oil conveying pipes, oil-resistant ropes, liners and the like, and can be used for preparing gun holders, helmets, military cables and the like in the military industry. The methods currently used for preparing nylon 612 mainly include an alcohol solvent method and a water solvent method. The nylon 612 prepared by the alcohol solvent method has excellent comprehensive performance, but the process route is long, and the nylon is easy to be flammable and explosive due to the existence of alcohol in the production process, and the production cost is high; the nylon 612 prepared by the water solvent method has low cost, but has small molecular monomer residues and certain defects in spinning and injection molding applications. In order to overcome the above defects, there is a related art that nylon 612 is improved by adopting a copolymerization technology, for example, in the disclosure of CN101143927, water is adopted as a solvent, and less than or equal to 25% of PA12, PA11, PA66, PA610, and PA1010 amide monomers are added to improve the properties of nylon 612, such as wear resistance, mouthfeel, and the like. However, the rigidity of the product prepared by the method is obviously reduced, and the surface brightness and chemical resistance are still required to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a copolymerized nylon 612 material to solve the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: the copolymerized nylon 612 material is prepared from the following raw material components in parts by weight:
nylon 612 monomer: 88 to 97 portions of
Nylon 6I monomer: 3 to 12 portions of
Antioxidant: 0.08-0.2 portion of
Distilled water: 100 parts.
Further, the feed additive comprises the following raw materials in parts by weight:
nylon 612 monomer: 90-95 parts
Nylon 6I monomer: 5-10 parts of
Antioxidant: 0.1 to 0.15 portion
Distilled water: 100 parts.
Further, the nylon 612 monomer was composed of hexamethylene diamine and dodecanedioic acid in a molar ratio of 1: 1.
Further, the nylon 6I monomer was composed of hexamethylenediamine and isophthalic acid in a molar ratio of 1: 1.
Further, the antioxidant is sodium phosphite.
Further, the preparation method comprises the following steps: weighing nylon 612 monomer, nylon 6I monomer, antioxidant and distilled water according to a proportion, adding the mixture into a reaction kettle, heating to 90-105 ℃, starting stirring, reacting for 0.5 hour, continuing to heat to 205-.
The invention has the beneficial effects that: all reactions of the copolymerized nylon 612 material are carried out in a reaction kettle, and compared with the prior art, the copolymerized nylon 612 material omits the procedures of salt preparation, concentration and the like, and has obvious advantages in economy, environment and operation.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention provides a technical scheme that: the copolymerized nylon 612 material is prepared from the following raw materials in parts by weight:
nylon 612 monomer: 88 to 97 portions of
Nylon 6I monomer: 3 to 12 portions of
Antioxidant: 0.08-0.2 portion of
Distilled water: 100 parts.
The nylon 612 monomer is composed of hexamethylene diamine and dodecanedioic acid in a molar ratio of 1: 1.
The nylon 6I monomer is composed of hexamethylene diamine and isophthalic acid in a molar ratio of 1: 1.
The antioxidant is sodium phosphite.
As an embodiment of the present invention: prepared by the following steps: weighing nylon 612 monomer, nylon 6I monomer, antioxidant and distilled water according to a proportion, adding the mixture into a reaction kettle, heating to 90-105 ℃, starting stirring, reacting for 0.5 hour, continuing to heat to 205 plus 260 ℃, reacting for 2-4 hours when the pressure reaches 1.5-1.8MPa, maintaining the temperature at 205 plus 260 ℃ and exhausting to normal pressure, introducing carbon dioxide or other inert gases to extrude the materials from the reaction kettle after the reaction is finished, cooling by a water tank, drawing to a granulator and granulating to obtain the copolymerized nylon 612 product
As an embodiment of the present invention: the material is composed of the following raw materials in parts by weight:
nylon 612 monomer: 90-95 parts
Nylon 6I monomer: 5-10 parts of
Antioxidant: 0.1 to 0.15 portion
Distilled water: 100 parts.
As an embodiment of the present invention: the semi-aromatic amorphous nylon 6I is used as a comonomer, and the prepared copolymerized nylon 612 product has good rigidity, good chemical resistance, small molding shrinkage and transparent and bright appearance. The nylon 6I is an asymmetric structure, and the crystallinity of the material copolymerized with the nylon 612 is reduced, so that the transparency of the material is improved, the shrinkage rate of the material is reduced, meanwhile, the nylon 6I contains a benzene ring structure with strong rigidity, the rigidity of the copolymerized material cannot be reduced, and the chemical resistance of the material is improved. The PA12, PA11, PA66, PA610 and PA1010 amide monomers adopted in the prior patent technology (CN101143927) are aliphatic comonomers, and although the crystallinity of the material can be reduced after copolymerization, the reduction is not obvious as that of nylon 6I, so that the reduction degree of the appearance brightness and the forming shrinkage rate are not as good as those of the product disclosed by the invention, in addition, the aliphatic monomer does not contain benzene rings, the rigidity of the material is obviously reduced after copolymerization with the nylon 612, and the chemical resistance is not improved.
The first embodiment is as follows: preparation of copolymerized nylon 612A
Raw materials: nylon 612 monomer: 97 parts, 3 parts of nylon 6I monomer, 0.08 part of antioxidant, distilled water: 100 portions of
1. Weighing 9.7 kg of nylon 612 monomer, 0.3 kg of nylon 6I monomer, 8 g of antioxidant and 10 kg of distilled water according to the proportion, adding the materials into a 27L reaction kettle, heating to 90-105 ℃, starting stirring, reacting for 0.5 h, continuously heating to 205-260 ℃, reacting for 2-4 h when the pressure reaches 1.5-1.8MPa, then maintaining the temperature of 205-260 ℃, exhausting to normal pressure, and finishing the reaction.
2. And introducing carbon dioxide or other inert gases to extrude the materials from the reaction kettle, cooling by a water tank, and drawing to a granulator for granulation to obtain the copolymerized nylon 612A product.
The first experimental example: performance test of copolymerized nylon 612A product
Drying the copolymerized nylon 612A prepared in the first embodiment, then preparing various standard sample strips by using an injection molding machine, and standing for 24 hours for testing; temperature of the injection molding machine: 230 ℃, 235 ℃ and 235 ℃; the injection molding speed is 60g/s, the injection molding time is 12s, the injection molding pressure is 36MPa, the holding pressure is 28MPa, and the holding time is 25 s.
The test results were as follows:
example two: preparation of copolymerized nylon 612B
Raw materials: nylon 612 monomer: 88 parts, 12 parts of nylon 6I monomer, 0.2 part of antioxidant, distilled water: 100 portions of
1. Weighing 8.8 kg of nylon 612 monomer, 1.2 kg of nylon 6I monomer, 20 g of antioxidant and 10 kg of distilled water according to the proportion, adding the materials into a 27L reaction kettle, heating to 90-105 ℃, starting stirring, reacting for 0.5 h, continuously heating to 205-260 ℃, reacting for 2-4 h when the pressure reaches 1.5-1.8MPa, then maintaining the temperature of 205-260 ℃, exhausting to normal pressure, and finishing the reaction.
2. And introducing carbon dioxide or other inert gases to extrude the materials from the reaction kettle, cooling by a water tank, and drawing to a granulator for granulation to obtain the copolymerized nylon 612B product.
Experiment example two: performance test of copolymerized nylon 612B product
Drying the copolymerized nylon 612B prepared in the second embodiment, then preparing various standard sample strips by using an injection molding machine, and standing for 24 hours for testing; temperature of the injection molding machine: 230 ℃, 235 ℃ and 235 ℃; the injection molding speed is 60g/s, the injection molding time is 12s, the injection molding pressure is 36MPa, the holding pressure is 28MPa, and the holding time is 25 s.
The test results were as follows:
example three: preparation of copolymerized nylon 612C
Raw materials: nylon 612 monomer: 92 parts, 8 parts of nylon 6I monomer, 0.12 part of antioxidant, distilled water: 100 portions of
1. Weighing 9.2 kg of nylon 612 monomer, 0.8 kg of nylon 6I monomer, 12 g of antioxidant and 10 kg of distilled water according to the proportion, adding the materials into a 27L reaction kettle, heating to 90-105 ℃, starting stirring, reacting for 0.5 h, continuously heating to 205-260 ℃, reacting for 2-4 h when the pressure reaches 1.5-1.8MPa, then maintaining the temperature of 205-260 ℃, exhausting to normal pressure, and finishing the reaction.
2. And introducing carbon dioxide or other inert gases to extrude the materials from the reaction kettle, cooling by a water tank, and drawing to a granulator for granulation to obtain the copolymerized nylon 612C product.
Experiment example three: performance test of copolymerized nylon 612C product
Drying the copolymerized nylon 612C prepared in the third embodiment, then preparing various standard sample strips by using an injection molding machine, and standing for 24 hours for testing; temperature of the injection molding machine: 230 ℃, 235 ℃ and 235 ℃; the injection molding speed is 60g/s, the injection molding time is 12s, the injection molding pressure is 36MPa, the holding pressure is 28MPa, and the holding time is 25 s.
The test results were as follows:
through tests, the notched impact strength of the samples prepared in the 3 embodiments is basically equivalent to that of the existing copolymerized nylon 612 and pure nylon 612, but the tensile strength and the bending strength of the products prepared by the method are higher than those of the existing copolymerized nylon 612 and pure nylon 612, particularly the bending strength has obvious advantages, in addition, the molding shrinkage rate, the light transmittance and the alkaline battery acid resistance of the products prepared by the method are better than those of the existing copolymerized nylon 612 and pure nylon 612, particularly, the samples prepared in the third embodiment have the best comprehensive performance, and all the performances are higher than those of the existing products.
The product prepared by the invention has good surface brightness, good rigidity, small molding shrinkage and good chemical resistance, and can be applied to highlight spraying-free chemical solvent-resistant precision products and other aspects besides meeting normal application; in addition, the preparation method is simple, safe, environment-friendly, easy to operate and high in economy and usability.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A copolymerized nylon 612 material is characterized in that: the feed is prepared from the following raw materials in parts by weight:
nylon 612 monomer: 88 to 97 portions of
Nylon 6I monomer: 3 to 12 portions of
Antioxidant: 0.08-0.2 portion of
Distilled water: 100 parts.
2. The copolymerized nylon 612 material of claim 1, wherein: the material is composed of the following raw materials in parts by weight:
nylon 612 monomer: 90-95 parts
Nylon 6I monomer: 5-10 parts of
Antioxidant: 0.1 to 0.15 portion
Distilled water: 100 parts.
3. The copolymerized nylon 612 material of claim 1, wherein: the nylon 612 monomer is composed of hexamethylene diamine and dodecanedioic acid in a molar ratio of 1: 1.
4. The copolymerized nylon 612 material of claim 1, wherein: the nylon 6I monomer is composed of hexamethylene diamine and isophthalic acid in a molar ratio of 1: 1.
5. The copolymerized nylon 612 material of claim 1, wherein: the antioxidant is sodium phosphite.
6. The copolymerized nylon 612 material of claim 1, wherein: prepared by the following steps: weighing nylon 612 monomer, nylon 6I monomer, antioxidant and distilled water according to a proportion, adding the mixture into a reaction kettle, heating to 90-105 ℃, starting stirring, reacting for 0.5 hour, continuing to heat to 205-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911291740.4A CN110951073A (en) | 2019-12-16 | 2019-12-16 | Copolymerized nylon 612 material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911291740.4A CN110951073A (en) | 2019-12-16 | 2019-12-16 | Copolymerized nylon 612 material |
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| Publication Number | Publication Date |
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| CN110951073A true CN110951073A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911291740.4A Pending CN110951073A (en) | 2019-12-16 | 2019-12-16 | Copolymerized nylon 612 material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11572455B2 (en) | 2017-10-12 | 2023-02-07 | Si Group, Inc. | Antidegradant blend |
| US11879050B2 (en) | 2018-05-03 | 2024-01-23 | Si Group, Inc. | Antidegradant blend |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1537881A (en) * | 2003-04-18 | 2004-10-20 | 上海杰事杰新材料股份有限公司 | High-toughness semi-aromatic nylon and its preparation method |
| CN101469126A (en) * | 2007-12-24 | 2009-07-01 | 上海杰事杰新材料股份有限公司 | Copolymerization nylon composition and preparation thereof |
| CN102933638A (en) * | 2010-06-11 | 2013-02-13 | 旭化成化学株式会社 | Polyamide and polyamide composition |
| CN103339201A (en) * | 2011-01-31 | 2013-10-02 | 纳幕尔杜邦公司 | Melt-blended thermoplastic composition |
| CN105330843A (en) * | 2015-11-30 | 2016-02-17 | 江门市优巨新材料有限公司 | Semi-aromatic transparent nylon and preparing method thereof |
| CN109135276A (en) * | 2018-08-23 | 2019-01-04 | 上海金发科技发展有限公司 | That resist warping high temperature resistant reinforced polyamide composition and preparation method thereof |
-
2019
- 2019-12-16 CN CN201911291740.4A patent/CN110951073A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1537881A (en) * | 2003-04-18 | 2004-10-20 | 上海杰事杰新材料股份有限公司 | High-toughness semi-aromatic nylon and its preparation method |
| CN101469126A (en) * | 2007-12-24 | 2009-07-01 | 上海杰事杰新材料股份有限公司 | Copolymerization nylon composition and preparation thereof |
| CN102933638A (en) * | 2010-06-11 | 2013-02-13 | 旭化成化学株式会社 | Polyamide and polyamide composition |
| CN103339201A (en) * | 2011-01-31 | 2013-10-02 | 纳幕尔杜邦公司 | Melt-blended thermoplastic composition |
| CN105330843A (en) * | 2015-11-30 | 2016-02-17 | 江门市优巨新材料有限公司 | Semi-aromatic transparent nylon and preparing method thereof |
| CN109135276A (en) * | 2018-08-23 | 2019-01-04 | 上海金发科技发展有限公司 | That resist warping high temperature resistant reinforced polyamide composition and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11572455B2 (en) | 2017-10-12 | 2023-02-07 | Si Group, Inc. | Antidegradant blend |
| US11879050B2 (en) | 2018-05-03 | 2024-01-23 | Si Group, Inc. | Antidegradant blend |
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Application publication date: 20200403 |
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