CN105400187A - High-fluidity polyamide composition and preparation method thereof - Google Patents
High-fluidity polyamide composition and preparation method thereof Download PDFInfo
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- CN105400187A CN105400187A CN201510744922.8A CN201510744922A CN105400187A CN 105400187 A CN105400187 A CN 105400187A CN 201510744922 A CN201510744922 A CN 201510744922A CN 105400187 A CN105400187 A CN 105400187A
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- polyamide thermoplastic
- polyamide
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- capped polyether
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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
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a high-fluidity polyamide composition and a preparation method thereof. The composition comprises thermoplastic polyamide and amino-terminated polyether, wherein the content of the amino-terminated polyether is 0.1-3% of the mass of the thermoplastic polyamide. The preparation method comprises the following steps: stirring the thermoplastic polyamide and amino-terminated polyether in a high-speed mixer and mixing uniformly to obtain a thermoplastic polyamide/amino-terminated polyether mixture; and conveying the thermoplastic polyamide/amino-terminated polyether mixture into a twin-screw extruder, and extruding and dicing to obtain the high-fluidity polyamide composition. The invention provides a polyamide composition containing an amino-terminated polyether compound, wherein the composition has the characteristics of excellent fluidity, good thermal stability, high strength, excellent color and the like; and by adding a little amino-terminated polyether, the fluidity of polyamide can be remarkably improved while the mechanical strength of polyamide is basically kept unchanged.
Description
Technical field
The invention belongs to polymeric material field, relate to a kind of polymeric composition, be specifically related to a kind of height flowing daiamid composition containing amido end capped polyether compound and utilize amido end capped polyether compound as the preparation method of the height flowing polymeric amide of viscosity depressant.
Background technology
Polymeric amide (PA), is commonly called as nylon, is the resin that DuPont develops for fiber at first, realizes industrialization in nineteen thirty-nine.Start development and production injection-molded item the 1950's, the requirement meet the lightweight of downstream industry goods with substituted metal, reducing costs.Amide group containing many repetitions in polyamide skeleton, claim nylon as during plastics, as during synthon, we are called polyamide fibre, and polymeric amide can be produced by diamine and diprotic acid, also can synthesize with omega-amino acid or cyclic lactam.PA has good over-all properties, comprise mechanical property, thermotolerance, wearability, chemical proofing and self lubricity, and frictional coefficient is low, there is certain flame retardant resistance, be easy to processing, be suitable for, by glass fibre and other filler filling enhancing modified, improving performance and broadened application scope.PA's is various in style, has PA6, PA66, PA11, PA12, PA46, PA610, PA612, PA1010 etc., and a lot of new variety such as the semi-aromatic nylon PA6T developed in recent years and extraordinary nylon.Mainly for the manufacture of fiber, as the aramid fiber etc. of nylon fiber and high-strength and high-modulus amount, the method machine-shapings such as available injection moulding, blowing.A class excellent performance, broad-spectrum engineering plastics.
In recent years, along with the continuous expansion of polymeric amide application, constantly high request is proposed to its intensity, modulus.Generally by improving, polyamide molecular weight reaches high-strength, the object of Gao Mo.But while polymer quantizes, its viscosity can sharply raise, and has a strong impact on its processing characteristics.In view of this, generally all its mobility to be improved by various method during application now.
The method of existing raising daiamid composition mobility generally has three major types.1, use low-molecular-weight polymeric amide and full-bodied resin compounded, can viscosity be reduced like this and to keep its performance slightly to decline even unchanged, but the molecular weight and molecular weight of system, can Long-Term Properties be caused, and mobility significantly can not improve; 2, in composition system, small molecules viscosity depressant is added.As the flow ability modifying agent such as tetramethylolmethane, Dipentaerythritol, but make the mechanical property of resin there occurs larger change, make material property cracking, intensity reduces, and color is poor, all makes visbreaking result undesirable, is unfavorable for using; Add the melt viscosity that liquid crystal polymer also can be used for reducing resin, but when prepolymer, liquid crystal polymer add-on are few, the effect of then viscosity reduction is remarkable, and the tensile strength of resin then can be made again during add-on height to decline to a great extent; 3. improve mobility by branching, but branching can cause crystal property to decline and strength degradation.
Summary of the invention
Problem to be solved by this invention is the poor problem of the mobility of existing high-viscosity polyamide.
In order to solve the problem, the invention provides a kind of high flowing polyamide thermoplastic compositions, it is characterized in that, comprise polyamide thermoplastic and amido end capped polyether, wherein the content of amido end capped polyether is the 0.1-3% of polyamide thermoplastic quality.
Preferably, described polyamide thermoplastic is any one or a few in polyamide thermoplastic 6 (PA6), polyamide thermoplastic 66 (PA66), polyamide thermoplastic 610 (PA610), polyamide thermoplastic 1010 (PA1010, decamethylene diamine and sebacic acid homopolyeondensation thing), polyamide thermoplastic 46 (PA46), polyamide thermoplastic 6T (PA6T), polyamide thermoplastic 11 (PA11), polyamide thermoplastic 12 (PA12) and polyamide thermoplastic 612 (PA612).
Preferably, described polyamide thermoplastic is any one or a few in nylon 6 (PA6) and nylon66 fiber (PA66).
Preferably, described amido end capped polyether is such as formula shown in I:
Wherein: x, y, z is positive integer, n is nonnegative integer, R
1, R
2, R
3, R
4for separate hydrogen atom, carbonatoms are the alkyl of 1-10.
Preferably, described amido end capped polyether is such as formula shown in II:
Wherein: a, b, c are nonnegative integer and a+b+c is positive integer, R
5, R
6, R
7, R
8for separate hydrogen atom, carbonatoms are the alkyl of 1-10.
Preferably, described amido end capped polyether is trimethylol propane three polypropylene glycol ether (amido end-blocking).
Preferably, the add-on of described amido end capped polyether is the 0.5-1.5% of polyamide thermoplastic quality.
Preferably, also include in oxidation inhibitor, toughner and inorganic reinforcement any one or a few.
More preferably, the addition of described oxidation inhibitor, toughner, inorganic reinforcement is 0.1-1%, 5-15%, 10-50% of polymeric amide quality.
Present invention also offers the preparation method of above-mentioned flowing polyamide thermoplastic compositions, it is characterized in that, comprise the steps:
Step 1): polyamide thermoplastic and amido end capped polyether are put into high-speed mixer in proportion and stirs, mix, obtain polyamide thermoplastic/amido end capped polyether mixture;
Step 2): polyamide thermoplastic/amido end capped polyether mixture is sent into twin screw extruder, extrudes pelletizing, obtain high flowing polyamide thermoplastic compositions.
Invention has been a large amount of careful research, provide a kind of height flowing daiamid composition containing amido end capped polyether on the one hand.Said composition is good thermal stability, the high workability thermoplastic resin composition of the advantage such as high strength and good color and luster; Provide a kind of method preparing said composition on the other hand.Adopt method of the present invention, add the mobility that a small amount of amido end capped polyether compound can significantly improve polymeric amide.
The kind of the present invention to polymeric amide does not have particular restriction, both can be polyamide 6 (PA6, ε-caprolactam homopolymer), polyamide 66 (PA66, hexanediamine and hexanodioic acid homopolyeondensation thing), polyamide 610 (PA610, hexanediamine and sebacic acid homopolyeondensation thing), polyamide 1010 (PA1010, decamethylene diamine and sebacic acid homopolyeondensation thing), polymeric amide 46 (PA46), polyamide 6 T (PA6T), polymeric amide 11 (PA11), polymeric amide 12 (PA12), polyamide 612 (PA612) etc.; Both can aforementioned in one also can be multiple.Both can be polyamide homopolymer, also can be their multipolymer.
The mobility of viscosity depressant of the present invention to foregoing polyamides is all greatly increased, and is not changing its mechanical property, improves liquidity when thermal characteristics and color and luster, particularly improves especially remarkable to the mobility of nylon 6 and nylon66 fiber.
Height flowing daiamid composition in the present invention, the viscosity depressant adopted is a class amido end capped polyether compound, in the mechanical property not changing polymeric amide, can significantly improve the mobility of polyamide-based compound under the condition of color.In composition, the content of viscosity depressant is generally advisable with 0.1wt% to 10wt%, too low, mobility improves limited efficiency, too high, affect the mechanical property of polymeric amide, preferred 0.1-5wt%, more preferably 0.1-3wt%, most preferably be 0.5wt%-1.5wt%.
Viscosity depressant of the present invention is amido end capped polyether.Amido end capped polyether is a class main chain is polyethers, and terminal group is the polymkeric substance of amido.Amido end capped polyether be generally by polyoxyethylene glycol, polypropylene glycol or ethylene glycol/propylene glycol copolymers and structure regulator at high temperature under high pressure ammonification obtain.Amido end capped polyether in the present invention is not containing hydroxyl, in addition the structure of amido end capped polyether is not particularly limited, amido end capped polyether both can be single functionality amido end capped polyether, also can be difunctionality amido end capped polyether, also can be three-functionality-degree amido end capped polyether.Its molecular weight is also not particularly limited.But consider and the interaction force of polyester and volatility, preferred three-functionality-degree amido end capped polyether and difunctionality amido end capped polyether, its molecular weight preferably 200 to 5000.Three-functionality-degree amido end capped polyether is more preferably:
In formula, x, y, z is positive integer, and n is nonnegative integer, R
1, R
2, R
3, R
4for separate hydrogen atom, carbonatoms are the alkyl of 1-10.
Two functionality amido end capped polyethers are more preferably:
In formula, a, b, c are nonnegative integer and a+b+c is positive integer, R
5, R
6, R
7, R
8for separate hydrogen atom, carbonatoms are the alkyl of 1-10.
Override selects trimethylolpropane tris polypropylene glycol ether (amido end-blocking), in experimental result test, and best results.Its structural formula is as follows:
In the present invention, the viscosity of polymeric amide is not particularly limited, but consider the mechanical property of composition, processing characteristics and visbreaking effect, in the present invention, the limiting viscosity of polymeric amide with 0.4-2.0dl/g as well, and more preferably 0.5-1.5, most preferably is 0.6-1.5.
In order to improve the performance of composition further in the present invention, can also import oxidation inhibitor, toughner, inorganic reinforcement etc. auxiliary agent in composition, add-on is respectively 0.1-1wt%, 5-15wt%, 10-50wt% is separately good for it.
The present invention also provides a kind of preparation method of high flowing daiamid composition, and the method comprises the following steps:
(1) under inert gas, polyamide thermoplastic and amido end capped polyether compound (formula I) viscosity depressant are put into high-speed mixer according to a certain ratio, are uniformly mixed, obtains polymeric amide/viscosity depressant mixture;
(2) above-mentioned polymeric amide/viscosity depressant mixture is sent into twin screw extruder, extrude pelletizing, obtain high flowing daiamid composition.Extrusion temperature is generally higher than polymeric amide fusing point 20-40 DEG C.
Compared with prior art, height flowing daiamid composition of the present invention, have that viscosity depressant addition is little, preparation is simple, mobility improves significantly, tensile strength is high, color and luster is excellent, easy processing, the feature such as with low cost.
Embodiment
For making the present invention become apparent, hereby with preferred embodiment, be described in detail below.
The raw material adopted in embodiment 1-9 and comparative example 1-6 is: PA6, nylon66 fiber, NYLON610; Trimethylol propane three polypropylene glycol ether (amido end-blocking) (CAS#39423-51-3), Sigma-Aldrich; Amido end-blocking polyoxyethylene glycol propylene glycol copolymers: (NH
2cH (CH
3) CH
2-[OCH (CH
3) CH
2]
x-[OCH
2cH
2]
y-[OCH
2cH (CH
3)] z-NH
2, Y ≈ 9, X+Z=3.6, molecular weight is about 600).The equipment adopted and instrument are: high-speed crush mixing machine, twin screw extruder, fusion index instrument.
Embodiment 1
By polyamide 6 (PA6) dried in advance for 5kg, the viscosity depressant of 5.0g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain oyster white PA6 composition.At 250 DEG C of temperature, MI is 37g/10min, DSC mensuration fusing point is after measured 224.5 DEG C, tensile strength 78.7MPa.
Embodiment 2
By polyamide 6 (PA6) dried in advance for 5kg, the viscosity depressant of 25g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain oyster white PA6 composition.At 250 DEG C of temperature, MI is 49g/10min, DSC mensuration fusing point is after measured 224.6 DEG C, tensile strength 77.3MPa.
Embodiment 3
By polyamide 6 (PA6) dried in advance for 5kg, the viscosity depressant of 50g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain oyster white PA6 composition.At 250 DEG C of temperature, MI is 78g/10min, DSC mensuration fusing point is after measured 223.4 DEG C, tensile strength 80.1MPa.
Embodiment 4
By polyamide 6 (PA6) dried in advance for 5kg, the viscosity depressant of 75g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain oyster white PA6 composition.At 250 DEG C of temperature, MI is 84g/10min, DSC mensuration fusing point is after measured 223.4 DEG C, tensile strength 74.3MPa.
Embodiment 5
By polyamide 6 (PA6) dried in advance for 5kg, the viscosity depressant of 150g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain light yellow PA6 composition.At 250 DEG C of temperature, MI is 107g/10min, DSC mensuration fusing point is after measured 222.7 DEG C, tensile strength 57.6MPa.
Embodiment 6
Polyamide 66 (PA66) dried in advance for 5kg and 50g amido end capped polyether EAD600 are put into high-speed mixer, stirred, obtains polymeric amide amido end capped polyether mixture; Aforementioned mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 280 DEG C, obtain oyster white PA66 composition.At 280 DEG C of temperature, MI is 72g/10min, DSC mensuration fusing point is after measured 245.5 DEG C, and tensile strength is 84.8MPa.
Embodiment 7
By polyamide 1010 (PA1010) dried in advance for 5kg, the viscosity depressant of 50g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain oyster white PA1010 composition.At 250 DEG C of temperature, MI is 78.2g/10min after measured, and fusing point is 210.4 DEG C, and tensile strength is 53.1MPa.
Embodiment 8
By polyamide 66 (PA66) dried in advance with 2.5kg for polyamide 6 (PA6) dried in advance for 2.5kg, the viscosity depressant of 50g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 280 DEG C, obtain half oyster white PA66 and PA6 composition.At 280 DEG C of temperature, MI is 78g/10min after measured, and fusing point is 236.8 DEG C, tensile strength 62.7MPa.
Embodiment 9
By polyamide 610 (PA610) dried in advance for 5kg, the viscosity depressant of 50g trimethylol propane three polypropylene glycol ether (amido end-blocking) puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain half oyster white PA610 composition.At 250 DEG C of temperature, MI is 71g/10min, tensile strength 48.6MPa after measured.
Comparative example 1
Polyamide 6 (PA6) dried in advance for 5kg is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain oyster white PA.At 250 DEG C of temperature, MI is 27g/10min after measured, and fusing point is 224.9 DEG C, tensile strength 78.9MPa.
Comparative example 2
By polyamide 6 (PA6) dried in advance for 5kg, the tetramethylolmethane viscosity depressant of 50g puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C, obtain more yellow PA6 composition.At 250 DEG C of temperature, MI is 43g/10min after measured, and fusing point is 223.5 DEG C, tensile strength 43.7MPa.
Comparative example 3
Polyamide 66 (PA66) dried in advance for 5kg is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 280 DEG C.At 280 DEG C of temperature, MI is 20g/10min after measured, and fusing point is 249.7 DEG C, tensile strength 78.8MPa.
Comparative example 4
By polyamide 66 (PA66) dried in advance for 5kg, the tetramethylolmethane viscosity depressant of 50g puts into high-speed mixer, be stirred to and mix, and obtains polymeric amide/viscosity depressant mixture; Foregoing polyamides/viscosity depressant mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 280 DEG C, obtain more yellow PA66 composition.Under surveying 280 DEG C of temperature, determine MI is 56g/10min, and fusing point is 242.5 DEG C, tensile strength 67.8MPa.
Comparative example 5
Polyamide 610 (PA610) dried in advance for 5kg is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 250 DEG C.At 250 DEG C of temperature, MI is 31g/10min, tensile strength 49.0MPa after measured.
Comparative example 6
Polyamide 66 (PA66) dried in advance with 2.5kg for polyamide 6 (PA6) dried in advance for 2.5kg is put into high-speed mixer, is stirred to and mixes, obtain polyamide compound; Foregoing polyamides mixture is sent into twin screw extruder, extrudes pelletizing at the extrusion temperature of 280 DEG C, obtain oyster white composition.At 280 DEG C of temperature, MI is 27g/10min, tensile strength 64.8MPa after measured.
Each performance perameter of product prepared by embodiment 1-9 and comparative example 1-6 is as shown in table 1.
Table 1
As shown in Table 1, material flowability raising is obvious afterwards adding trimethylol propane three polypropylene glycol ether (amido end-blocking) for embodiment 1-9, and thermotolerance is not affected because of adding of viscosity depressant and reduces, namely when keeping physical strength substantially constant, significantly can reduce shear viscosity, greatly improving its mobility after adding amido end capped polyether.Comparative example 2,4 is under adding tetramethylolmethane and making the condition of viscosity depressant, and mobility increases under high shear, but can not show a candle to amido end capped polyether, and thermotolerance and tensile strength all have decline by a relatively large margin.
Claims (10)
1. a high flowing polyamide thermoplastic compositions, is characterized in that, comprises polyamide thermoplastic and amido end capped polyether, and wherein the content of amido end capped polyether is the 0.1-3% of polyamide thermoplastic quality.
2. high flowing polyamide thermoplastic compositions as claimed in claim 1, it is characterized in that, described polyamide thermoplastic is any one or a few in polyamide thermoplastic 6 (PA6), polyamide thermoplastic 66 (PA66), polyamide thermoplastic 610 (PA610), polyamide thermoplastic 1010 (PA1010), polyamide thermoplastic 46 (PA46), polyamide thermoplastic 6T, polyamide thermoplastic 11, polyamide thermoplastic 12 and polyamide thermoplastic 612.
3. flowing polyamide thermoplastic compositions as claimed in claim 1 high, is characterized in that, described polyamide thermoplastic is any one or a few in nylon 6 and nylon66 fiber.
4. high flowing polyamide thermoplastic compositions as claimed in claim 1, it is characterized in that, described amido end capped polyether is such as formula shown in I:
Wherein: x, y, z is positive integer, n is nonnegative integer, R
1, R
2, R
3, R
4for separate hydrogen atom, carbonatoms are the alkyl of 1-10.
5. high flowing polyamide thermoplastic compositions as claimed in claim 1, it is characterized in that, described amido end capped polyether is such as formula shown in II:
Wherein: a, b, c are nonnegative integer and a+b+c is positive integer, R
5, R
6, R
7, R
8for separate hydrogen atom, carbonatoms are the alkyl of 1-10.
6. the height flowing polyamide thermoplastic compositions as described in claim 1 or 4, it is characterized in that, described amido end capped polyether is trimethylol propane three polypropylene glycol ether with amido end-blocking.
7. high flowing polyamide thermoplastic compositions as claimed in claim 1, it is characterized in that, the add-on of described amido end capped polyether is the 0.5-1.5% of polyamide thermoplastic quality.
8. high flowing polyamide thermoplastic compositions as claimed in claim 1, is characterized in that, also includes any one or a few in oxidation inhibitor, toughner and inorganic reinforcement.
9. high flowing polyamide thermoplastic compositions as claimed in claim 8, it is characterized in that, the addition of described oxidation inhibitor, toughner, inorganic reinforcement is 0.1-1%, 5-15%, 10-50% of polymeric amide quality.
10. a preparation method for the flowing polyamide thermoplastic compositions described in claim 1-9 any one, is characterized in that, comprise the steps:
Step 1): polyamide thermoplastic and amido end capped polyether are put into high-speed mixer in proportion and stirs, mix, obtain polyamide thermoplastic/amido end capped polyether mixture;
Step 2): polyamide thermoplastic/amido end capped polyether mixture is sent into twin screw extruder, extrudes pelletizing, obtain high flowing polyamide thermoplastic compositions.
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| CN105821512A (en) * | 2016-05-13 | 2016-08-03 | 东华大学 | Polyester fiber and preparation method thereof |
| CN105924946A (en) * | 2016-05-13 | 2016-09-07 | 东华大学 | Polyoxamide composition and preparation method thereof |
| CN106046787A (en) * | 2016-06-29 | 2016-10-26 | 东华大学 | High-thermal-resistant resin composition and preparation method thereof |
| CN114437383A (en) * | 2022-03-18 | 2022-05-06 | 广东圆融新材料有限公司 | High-fluidity glass fiber reinforced nylon composition and preparation method and application thereof |
| CN114957987A (en) * | 2022-07-04 | 2022-08-30 | 华润化学材料科技股份有限公司 | Flame-retardant antistatic master batch and preparation method and application thereof |
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