CN110172246B - High-compatibility nylon 1012 and nylon 6 alloy and preparation method thereof - Google Patents
High-compatibility nylon 1012 and nylon 6 alloy and preparation method thereof Download PDFInfo
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- CN110172246B CN110172246B CN201910526043.6A CN201910526043A CN110172246B CN 110172246 B CN110172246 B CN 110172246B CN 201910526043 A CN201910526043 A CN 201910526043A CN 110172246 B CN110172246 B CN 110172246B
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Abstract
The invention discloses an alloy of high compatibility nylon 1012 and nylon 6 and a preparation method thereof, wherein a compatilizer molecule compatible with short-chain nylon is introduced into a polyamide molecular structure in the process of polymerizing long carbon chain nylon to realize the molecular assembly between the two molecules of the long carbon chain nylon and the compatilizer, the alloy takes diisocyanate groups as bridges, and adopts polymerization modification and double-screw extrusion modes respectively to realize the molecular compatibility of the long carbon chain nylon 1012 and the nylon 6, so that the compatibility problem of the long carbon chain nylon 1012 and the nylon 6 is fundamentally solved.
Description
Technical Field
The invention relates to an alloy of high-compatibility nylon 1012 and nylon 6 and a preparation method thereof, relating to the field of chemical synthesis.
Background
The polyamide is commonly called nylon, is a general name of thermoplastic resin containing repeated polyamide groups on a molecular main chain, and comprises aliphatic nylon, aliphatic-aromatic nylon and aromatic nylon, wherein the aliphatic nylon can be divided into long-carbon-chain nylon and short-chain nylon according to the length of main chain carbon and different synthesis modes of the main chain carbon, and the long-carbon-chain nylon and the short-chain nylon have different molecular structures and are different in toughness and rigidity.
The long carbon chain nylon is an important high-performance engineering plastic in nylon products, particularly the nylon 1012 is one of the nylon which is commonly used at present and has a longer carbon chain, has the advantages of high toughness, low water absorption, dimensional stability, good drug resistance, wear resistance, low-temperature impact resistance and the like, and can be widely applied to the fields of machinery, automobiles, electric wires and cables, aviation, electronic and electric appliances, information, textile and the like. However, as the polymerization raw material sebacic acid is derived from castor oil which is a renewable resource, and fewer manufacturers are provided in China, the production cost is high, in addition, as the molecular chain is long, although the toughness is high, the rigidity is low, and the application in some application fields, especially the application aspect of plastic-substituted steel is greatly limited, the alloy is required to be carried out with the short-chain nylon (nylon 6) in order to further expand the application range of the long-carbon-chain nylon 1012 and fully exert the high transparency, the toughness and the excellent chemical resistance, but the difference of the molecular structures is large due to the different polymerization modes of the two, the delamination is easy to occur when the alloy is directly processed, and the compatibility is poor.
At present, the method commonly used in the industry is to add the compatilizer into a double-screw extrusion formula, but the problems of poor effect and unstable data exist after the compatilizer is used because the addition amount of the compatilizer is less.
Disclosure of Invention
The invention overcomes the defects of the prior art, aims to solve the problem of compatibility of the long carbon chain nylon 1012 and the short chain nylon 6, and realizes the molecular assembly between the two molecules of the long carbon chain nylon and the compatilizer by introducing the compatilizer molecule compatible with the short chain nylon on the molecular structure of the polyamide in the polymerization process of the long carbon chain nylon, thereby fundamentally solving the problem of compatibility of the long carbon chain nylon 1012 and the nylon 6.
An alloy of high-compatibility nylon 1012 and nylon 6 comprises the following components (in parts by weight): 38-43 parts of modified nylon 1012 resin, 25-30 parts of nylon 6 resin, 1-2 parts of antioxidant and 1-2 parts of lubricant;
the modified nylon 1012 resin refers to nylon 1012 resin with isocyanate functional groups on the molecular structure of polyamide.
The preparation method of the high-compatibility nylon 1012 and nylon 6 alloy comprises the steps of introducing a prepolymer for synthesizing polyurethane as a compatilizer molecule by using 1012 molecules as seed crystals at the later stage of nylon 1012 polymerization to obtain modified nylon 1012 resin with isocyanate functional groups on the surface, and then carrying out blending modification on the modified nylon 1012 resin and nylon 6 through a double-screw extruder to obtain the high-compatibility nylon 1012 and nylon 6 alloy.
The preparation method comprises the following steps:
1) uniformly mixing 38-43 parts of modified nylon 1012 resin, 25-30 parts of nylon 6 resin, 1-2 parts of antioxidant and 1-2 parts of lubricant in a high-speed mixer;
2) when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170-185 ℃, the temperature of the second zone is 210-215 ℃, the temperature of the third zone is 215-220 ℃, the temperature of the fourth zone is 220-230 ℃, the temperature of the fifth zone is 230-235 ℃, the temperature of the sixth zone is 230-235 ℃, and the temperature of the seventh zone is 235-240 ℃; the temperature of the handpiece is 240 ℃ and 245 ℃; the rotating speed of the extruder host is 160-; the feeding section is 160-200 ℃, the melting section is 200-260 ℃, and the head section is 220-260 ℃; the rotating speed of the screw is 15-45 Hz;
3) after the extruder head discharges stably, drawing the extruded material strips, cooling by water cooling, and drying the cooled material strips by a dryer;
4) putting the dried material strips obtained in the step 3) into a granulator for granulating, putting cut particles into a vibrating screen for screening, and drying and packaging after screening, wherein the drying requirement is as follows: drying at 90-100 deg.c and controlling water content within 0.1% to obtain the high compatibility nylon 1012 and nylon 6 alloy.
Further, the antioxidant in the step 1) is 1098, and the lubricant is silicone.
Further, the nylon 6 resin described in the above step 1) has a viscosity of 2.3.
Further, the preparation method of the modified nylon 1012 resin in the step 1) comprises the following steps:
s1, adding 25-30 parts of distilled water into a salt preparation kettle, adding 20-25 parts of decamethylene diamine and 23-27 parts of dodecanoic acid into the kettle, starting to heat up and stir, stopping heating when the temperature is raised to 100 ℃, and continuing to stir until the salt solution is completely neutralized, clear and transparent;
s2, adding the salt solution obtained in the step S1 into a polymerization kettle, simultaneously adding 0.1-0.3 part of phosphorous acid, vacuumizing, starting stirring, heating to 230-240 ℃ for melt copolymerization reaction, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, and then cooling and exhausting to normal pressure;
s3, when the temperature is reduced to about 80 ℃, adding 9-12 parts of polyester polyol, 5-8 parts of isocyanate and 0.5-1.5 parts of chain extender to carry out emulsion polymerization for 115-fold 120S, raising the temperature to 190-fold 200 ℃ for curing, discharging and drying after curing to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Further, the polyester polyol described in the step S3 is a polyester polyol having a molecular weight of 2000, and is one of polyethylene glycol adipate and polybutylene glycol adipate.
Further, the polyester polyol is preferably polyethylene glycol adipate.
Further, the isocyanate in step S3 is one of diisocyanate, 1, 6-hexamethylene diisocyanate, and hexamethylene diisocyanate.
Further, the isocyanate is preferably 1, 6-hexamethylene diisocyanate.
Further, the chain extender described in step S3 is 1,4 butanediol.
The polymerization methods of the long carbon chain nylon 1012 and the nylon 6 are different, but the molecular structures are similar, both have amino and carboxyl groups with higher activity, if the compatilizer is added after the product is formed and the chemical reaction of the groups of the compatilizer and the compatilizer is difficult to realize through the mixing of a double-screw extruder, the firm compatibility combination is realized, 1012 molecules are taken as seed crystals to introduce prepolymer for synthesizing polyurethane as compatilizer molecules to realize the molecular assembly of the two molecules to obtain modified nylon 1012 resin with isocyanate functional groups on the surface, and then the modified nylon 1012 resin is blended and modified with nylon 6 by a double-screw extruder to realize the reaction of isocyanate and amino groups in the molecular structure of the nylon 6, thereby realizing the chemical reaction between nylon 1012 and nylon 6 molecules, realizing the compatibility of molecular level and obtaining the alloy product with high compatibility.
Has the advantages that:
1) the polyurethane prepolymer is used as a compatilizer molecule, so that the molecular assembly at the later polymerization stage of nylon 1012 is realized;
2) the molecular compatibility of the long carbon chain nylon 1012 and the nylon 6 is realized by taking diisocyanate groups as bridges and adopting polymerization and double-screw extrusion modification modes respectively;
3) the nylon 6 is added into the nylon 1012, so that the rigidity of the material is improved on the premise of meeting the use requirement of toughness, the production cost of the product is reduced, and the application competitiveness of the product in the market is improved.
4) The high-compatibility nylon 1012 and nylon 6 alloy prepared by the invention solves the compatibility between high molecular polymers from the aspect of molecular structure, and guides the direction for researching the compatibility between the high molecular polymers in the future
Detailed Description
Example 1: effect of the Primary raw materials of the isocyanate Compatibilizing agent Synthesis on the Properties of the composite
(1) Preparation of Nylon 1012 and Nylon 6 alloy A
Adding 28 parts of distilled water into a salt making kettle, then adding 21 parts of decamethylene diamine and 23 parts of dodecanoic acid into the kettle, heating and stirring to 100 ℃, stopping heating, and continuing stirring until the salt solution is completely neutralized, clarified and transparent. Adding the obtained salt solution into a polymerization kettle, adding 0.2 part of phosphorous acid, stirring after vacuum, heating to 240 ℃ for melt copolymerization, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, then cooling and reducing the pressure, adding 10 parts of polytetramethylene glycol adipate, 7 parts of hexamethylene diisocyanate and 1 part of 1, 4-butanediol chain extender for emulsion polymerization for 120s when the temperature is reduced to 80 ℃, heating to 200 ℃ for curing, discharging and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Uniformly mixing 42 parts of modified nylon 1012 resin, 28 parts of nylon 6 resin, 1.5 parts of antioxidant and 1 part of silicone lubricant in a high-speed mixer; when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 235 ℃ and the temperature of the seventh zone is 240 ℃; the head temperature is 245 ℃; the rotating speed of the extruder main engine is 160r/min, and the main engine current is 65A. After the extruder head discharges stably, drawing the extruded material strips, and cooling by water cooling; and drying the cooled material strips by a dryer, and then granulating by a granulator, screening by a vibrating screen, drying and packaging. Drying requirements are as follows: drying at 90-100 deg.C, controlling water content within 0.1%, and obtaining final nylon 1012 and nylon 6 alloy.
(2) Preparation of Nylon 1012 and Nylon 6 alloy B
Adding 28 parts of distilled water into a salt making kettle, then adding 21 parts of decamethylene diamine and 23 parts of dodecanoic acid into the kettle, heating and stirring to 100 ℃, stopping heating, and continuing stirring until the salt solution is completely neutralized, clarified and transparent. Adding the obtained salt solution into a polymerization kettle, adding 0.2 part of phosphorous acid, stirring after vacuum, heating to 240 ℃ for melt copolymerization, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, then cooling and reducing the pressure, adding 9 parts of polyethylene glycol adipate, 7 parts of hexamethylene diisocyanate and 0.5 part of 1, 4-butanediol chain extender for emulsion polymerization for 120s when the temperature is reduced to 80 ℃, heating to 200 ℃ for curing, discharging and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Uniformly mixing 42 parts of modified nylon 1012 resin, 28 parts of nylon 6 resin, 1.5 parts of antioxidant and 1 part of silicone lubricant in a high-speed mixer; when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 235 ℃ and the temperature of the seventh zone is 240 ℃; the head temperature is 245 ℃; the rotating speed of the extruder main engine is 160r/min, and the main engine current is 65A. After the extruder head discharges stably, drawing the extruded material strips, and cooling by water cooling; and drying the cooled material strips by a dryer, and then granulating by a granulator, screening by a vibrating screen, drying and packaging. Drying requirements are as follows: drying at 90-100 deg.C, controlling water content within 0.1%, and obtaining final nylon 1012 and nylon 6 alloy.
(3) Preparation of Nylon 1012 and Nylon 6 alloy C
Adding 28 parts of distilled water into a salt making kettle, then adding 21 parts of decamethylene diamine and 23 parts of dodecanoic acid into the kettle, heating and stirring to 100 ℃, stopping heating, and continuing stirring until the salt solution is completely neutralized, clarified and transparent. Adding the obtained salt solution into a polymerization kettle, adding 0.2 part of phosphorous acid, stirring after vacuum, heating to 240 ℃ for melt copolymerization, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, then cooling and reducing the pressure, adding 10 parts of polyethylene glycol adipate, 7 parts of 1,6 hexamethylene diisocyanate and 1 part of 1,4 butanediol chain extender for emulsion polymerization for 120s when the temperature is reduced to 80 ℃, heating to 200 ℃ for curing, discharging and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Uniformly mixing 42 parts of modified nylon 1012 resin, 28 parts of nylon 6 resin, 1.5 parts of antioxidant and 1 part of silicone lubricant in a high-speed mixer; when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 235 ℃ and the temperature of the seventh zone is 240 ℃; the head temperature is 245 ℃; the rotating speed of the extruder main engine is 160r/min, and the main engine current is 65A. After the extruder head discharges stably, drawing the extruded material strips, and cooling by water cooling; and drying the cooled material strips by a dryer, and then granulating by a granulator, screening by a vibrating screen, drying and packaging. Drying requirements are as follows: drying at 90-100 deg.C, controlling water content within 0.1%, and obtaining final nylon 1012 and nylon 6 alloy.
TABLE 1 data table of nylon 1012 and nylon 6 alloy properties
Example 2: effect of polymerization time on composite Properties
Adding 28 parts of distilled water into a salt making kettle, then adding 21 parts of decamethylene diamine and 23 parts of dodecanoic acid into the kettle, heating and stirring to 100 ℃, stopping heating, and continuing stirring until the salt solution is completely neutralized, clarified and transparent. Adding the obtained salt solution into a polymerization kettle, adding 0.2 part of phosphorous acid, stirring after vacuum, heating to 240 ℃ for melt copolymerization, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, then cooling and reducing the pressure, adding 10 parts of polyethylene glycol adipate, 7 parts of 1,6 hexamethylene diisocyanate and 1 part of 1, 4-butanediol chain extender for emulsion polymerization for 90s when the temperature is reduced to 80 ℃, heating to 200 ℃ for curing, discharging and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Uniformly mixing 42 parts of modified nylon 1012 resin, 28 parts of nylon 6 resin, 1.5 parts of antioxidant and 1 part of silicone lubricant in a high-speed mixer; when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 235 ℃ and the temperature of the seventh zone is 240 ℃; the head temperature is 245 ℃; the rotating speed of the extruder main engine is 160r/min, and the main engine current is 65A. After the extruder head discharges stably, drawing the extruded material strips, and cooling by water cooling; and drying the cooled material strips by a dryer, and then granulating by a granulator, screening by a vibrating screen, drying and packaging. Drying requirements are as follows: drying at 90-100 deg.C, controlling water content within 0.1%, and obtaining final nylon 1012 and nylon 6 alloy D.
Nylon 1012 and nylon 6 alloy C were synthesized according to the procedure of example 1 (3).
TABLE 2 data table of nylon 1012 and nylon 6 alloy properties
| Item | Nylon 1012 and nylon 6 alloy D | Nylon 1012 and nylon 6 alloy C |
| Appearance of the product | White translucent particles | White translucent particles |
| Tensile strength, Mpa | 62 | 69 |
| Elongation at break,% | 101 | 116 |
| Flexural strength, Mpa | 73 | 80 |
| Flexural modulus, KJ/m2 | 1895 | 2032 |
| Notched impact strength, KJ/m2 | 9.8 | 11.3 |
| Without gapsImpact strength, KJ/m2 | 25JNB | 25JNB |
Example 3:
adding 28 parts of distilled water into a salt making kettle, then adding 21 parts of decamethylene diamine and 23 parts of dodecanoic acid into the kettle, heating and stirring to 100 ℃, stopping heating, and continuing stirring until the salt solution is completely neutralized, clarified and transparent. Adding the obtained salt solution into a polymerization kettle, adding 0.2 part of phosphorous acid, stirring after vacuum, heating to 240 ℃ for melt copolymerization, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, then cooling and reducing the pressure, adding 10 parts of polyethylene glycol adipate, 7 parts of 1,6 hexamethylene diisocyanate and 1 part of 1,4 butanediol chain extender for emulsion polymerization for 120s when the temperature is reduced to 80 ℃, heating to 200 ℃ for curing, discharging and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Uniformly mixing 42 parts of modified nylon 1012 resin, 28 parts of nylon 6 resin, 1.5 parts of antioxidant and 1 part of silicone lubricant in a high-speed mixer; when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 235 ℃ and the temperature of the seventh zone is 240 ℃; the head temperature is 245 ℃; the rotating speed of the extruder main engine is 160r/min, and the main engine current is 65A. After the extruder head discharges stably, drawing the extruded material strips, and cooling by water cooling; and drying the cooled material strips by a dryer, and then granulating by a granulator, screening by a vibrating screen, drying and packaging. Drying requirements are as follows: drying at 90-100 deg.C, controlling water content within 0.1%, and obtaining final nylon 1012 and nylon 6 alloy.
The performance data for nylon 1012 and nylon 6 alloys of the present invention versus nylon 1012 and nylon 6 are shown in table 3:
table 3 comparison of performance data for nylon 1012 and nylon 6 alloys with nylon 1012 and nylon 6
Example 4: comparative test of alloy material prepared by the method and alloy material prepared by the traditional process
Adding 28 parts of distilled water into a salt making kettle, then adding 21 parts of decamethylene diamine and 23 parts of dodecanoic acid into the kettle, heating and stirring to 100 ℃, stopping heating, and continuing stirring until the salt solution is completely neutralized, clarified and transparent. Adding the obtained salt solution into a polymerization kettle, adding 0.2 part of phosphorous acid, stirring after vacuum, heating to 240 ℃ for melt copolymerization, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, then cooling and reducing the pressure, adding 10 parts of polyethylene glycol adipate, 7 parts of 1,6 hexamethylene diisocyanate and 1 part of 1,4 butanediol chain extender for emulsion polymerization for 120s when the temperature is reduced to 80 ℃, heating to 200 ℃ for curing, discharging and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
Uniformly mixing 42 parts of modified nylon 1012 resin, 28 parts of nylon 6 resin, 1.5 parts of antioxidant and 1 part of silicone lubricant in a high-speed mixer; when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder (pre-cleaning) for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170 ℃, the temperature of the second zone is 210 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 220 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 235 ℃ and the temperature of the seventh zone is 240 ℃; the head temperature is 245 ℃; the rotating speed of the extruder main engine is 160r/min, and the main engine current is 65A. After the extruder head discharges stably, drawing the extruded material strips, and cooling by water cooling; and drying the cooled material strips by a dryer, and then granulating by a granulator, screening by a vibrating screen, drying and packaging. Drying requirements are as follows: drying at 90-100 deg.C, controlling water content within 0.1%, and obtaining final nylon 1012 and nylon 6 alloy.
The nylon 1012 and nylon 6 alloy products prepared by the method are compared with nylon alloy without a compatilizer and alloy prepared by adding an isocyanate compatilizer after being obtained by a common method in terms of processing technology and performance, and the details are shown in table 4:
TABLE 4 comparison of nylon 1012 and nylon 6 alloys for three different formulations
The test results in the table show that the long carbon chain nylon 1012 and the nylon 6 are difficult to be subjected to double-screw melt blending extrusion without adding a compatilizer, and the delamination is serious; after the long carbon chain nylon 1012 and the nylon 6 are added in the formula as the addition auxiliary agent, the processing performance can be improved to a certain extent, but the processing process is unstable and is not suitable for continuous production, and the comprehensive performance of the obtained product is low, which indicates that the long carbon chain nylon 1012 and the nylon 6 are not fully compatible; the alloy product obtained by the invention has smooth processing process and higher comprehensive performance data, can meet the requirements of the market on the use of the product, and is beneficial to the popularization and development of the market.
Claims (8)
1. An alloy of high-compatibility nylon 1012 and nylon 6 is characterized by comprising the following components in parts by weight: 38-43 parts of modified nylon 1012 resin, 25-30 parts of nylon 6 resin, 1-2 parts of antioxidant and 1-2 parts of lubricant;
the modified nylon 1012 resin refers to nylon 1012 resin with isocyanate functional groups on the molecular structure of polyamide;
the preparation method of the modified nylon 1012 resin comprises the following steps:
s1, adding 25-30 parts of distilled water into a salt preparation kettle, adding 20-25 parts of decamethylene diamine and 23-27 parts of dodecanoic acid into the kettle, starting to heat up and stir, stopping heating when the temperature is raised to 100 ℃, and continuing to stir until the salt solution is completely neutralized, clear and transparent;
s2, adding the salt solution obtained in the step S1 into a polymerization kettle, simultaneously adding 0.1-0.3 part of phosphorous acid, vacuumizing, starting stirring, heating to 230-240 ℃ for melt copolymerization reaction, maintaining the pressure for reaction for 6 hours when the pressure reaches 1.5MPa, and then cooling and exhausting to normal pressure;
s3, when the temperature is reduced to 78-82 ℃, adding 9-12 parts of polyester polyol, 5-8 parts of diisocyanate and 0.5-1.5 parts of chain extender to carry out emulsion polymerization for 90-120S, raising the temperature to 190-200 ℃ to carry out curing, discharging after curing, and drying to obtain the long carbon chain nylon 1012 resin after molecular assembly modification.
2. The method for preparing the alloy of claim 1, wherein the high compatibility nylon 1012 and nylon 6 alloy is obtained by introducing a prepolymer for synthesizing polyurethane as a compatibilizer molecule into a modified nylon 1012 resin with isocyanate functional groups on the surface by using 1012 molecules as seed crystals at the later stage of nylon 1012 polymerization, and then blending and modifying the modified nylon 1012 resin with nylon 6 by a twin-screw extruder.
3. The method of claim 2, comprising the steps of:
1) uniformly mixing 38-43 parts of modified nylon 1012 resin, 25-30 parts of nylon 6 resin, 1-2 parts of antioxidant and 1-2 parts of lubricant in a high-speed mixer;
2) when the temperature of each section of the extruder reaches a set temperature, adding the mixed materials into the extruder for mixing, wherein the set temperature of each section is as follows: the temperature of the first zone is 170-185 ℃, the temperature of the second zone is 210-215 ℃, the temperature of the third zone is 215-220 ℃, the temperature of the fourth zone is 220-230 ℃, the temperature of the fifth zone is 230-235 ℃, the temperature of the sixth zone is 230-235 ℃, and the temperature of the seventh zone is 235-240 ℃; the temperature of the handpiece is 240 ℃ and 245 ℃; the rotating speed of the extruder host is 160-; the feeding section is 160-200 ℃, the melting section is 200-260 ℃, and the head section is 220-260 ℃; the rotating speed of the screw is 15-45 Hz;
3) after the extruder head discharges stably, drawing the extruded material strips, cooling by water cooling, and drying the cooled material strips by a dryer;
4) putting the dried material strips obtained in the step 3) into a granulator for granulating, putting cut particles into a vibrating screen for screening, and drying and packaging after screening, wherein the drying requirement is as follows: drying at 90-100 deg.c and controlling water content within 0.1% to obtain the high compatibility nylon 1012 and nylon 6 alloy.
4. The method of claim 3, wherein the antioxidant in step 1) is 1098, and the lubricant is silicone.
5. The method of claim 3, wherein the nylon 6 resin in the step 1) has a viscosity of 2.3.
6. The alloy of nylon 1012 and nylon 6 with high compatibility as claimed in claim 1, wherein the polyester polyol in step S3 is one of polyethylene glycol adipate and polybutylene glycol adipate.
7. The alloy of nylon 1012 and nylon 6 with high compatibility as claimed in claim 1, wherein the diisocyanate in step S3 is one of 1, 6-hexamethylene diisocyanate and hexamethylene diisocyanate.
8. The alloy of highly compatible nylon 1012 and nylon 6 as claimed in claim 1, wherein the chain extender in step S3 is 1,4 butanediol.
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| CN101195706A (en) * | 2006-12-09 | 2008-06-11 | 中国科学院兰州化学物理研究所 | Method for producing polyurethane toughness-reinforcing cast form nylon composite material |
| CN101372552A (en) * | 2007-08-22 | 2009-02-25 | 中国科学院化学研究所 | High-strength temperature-resistant thermoplastic polyurethane elastomer blended modifier and preparation thereof |
| JP2010047631A (en) * | 2008-08-19 | 2010-03-04 | Unitika Ltd | Glass-fiber reinforced polyamide resin composition |
| CN103214843A (en) * | 2013-04-28 | 2013-07-24 | 安特普工程塑料（苏州）有限公司 | Macrofiber-reinforced long carbon chain nylon and preparation method thereof |
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| CN101195706A (en) * | 2006-12-09 | 2008-06-11 | 中国科学院兰州化学物理研究所 | Method for producing polyurethane toughness-reinforcing cast form nylon composite material |
| CN101372552A (en) * | 2007-08-22 | 2009-02-25 | 中国科学院化学研究所 | High-strength temperature-resistant thermoplastic polyurethane elastomer blended modifier and preparation thereof |
| JP2010047631A (en) * | 2008-08-19 | 2010-03-04 | Unitika Ltd | Glass-fiber reinforced polyamide resin composition |
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Denomination of invention: The invention relates to an alloy of high compatibility nylon 1012 and nylon 6 and a preparation method thereof Effective date of registration: 20211025 Granted publication date: 20210810 Pledgee: SHANDONG XINSHENG INDUSTRIAL DEVELOPMENT LLC Pledgor: SHANDONG DONGCHEN NEW TECHNOLOGY CO.,LTD. Registration number: Y2021980011243 |