CN116656120A - Polyamide master batch and preparation method and application thereof - Google Patents
Polyamide master batch and preparation method and application thereof Download PDFInfo
- Publication number
- CN116656120A CN116656120A CN202210157708.2A CN202210157708A CN116656120A CN 116656120 A CN116656120 A CN 116656120A CN 202210157708 A CN202210157708 A CN 202210157708A CN 116656120 A CN116656120 A CN 116656120A
- Authority
- CN
- China
- Prior art keywords
- parts
- copolymer
- polyamide
- polyamide masterbatch
- relative viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004952 Polyamide Substances 0.000 title claims abstract description 31
- 229920002647 polyamide Polymers 0.000 title claims abstract description 31
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000003063 flame retardant Substances 0.000 claims abstract description 19
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical compound NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 claims abstract description 7
- IPRJXAGUEGOFGG-UHFFFAOYSA-N N-butylbenzenesulfonamide Chemical compound CCCCNS(=O)(=O)C1=CC=CC=C1 IPRJXAGUEGOFGG-UHFFFAOYSA-N 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- -1 phosphite compound Chemical class 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- HJJOHHHEKFECQI-UHFFFAOYSA-N aluminum;phosphite Chemical compound [Al+3].[O-]P([O-])[O-] HJJOHHHEKFECQI-UHFFFAOYSA-N 0.000 claims description 6
- KTLIMPGQZDZPSB-UHFFFAOYSA-M diethylphosphinate Chemical group CCP([O-])(=O)CC KTLIMPGQZDZPSB-UHFFFAOYSA-M 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- XSAOTYCWGCRGCP-UHFFFAOYSA-K aluminum;diethylphosphinate Chemical compound [Al+3].CCP([O-])(=O)CC.CCP([O-])(=O)CC.CCP([O-])(=O)CC XSAOTYCWGCRGCP-UHFFFAOYSA-K 0.000 claims description 4
- UCAGLBKTLXCODC-UHFFFAOYSA-N carzenide Chemical compound NS(=O)(=O)C1=CC=C(C(O)=O)C=C1 UCAGLBKTLXCODC-UHFFFAOYSA-N 0.000 claims description 4
- VMFOHNMEJNFJAE-UHFFFAOYSA-N trimagnesium;diphosphite Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])[O-].[O-]P([O-])[O-] VMFOHNMEJNFJAE-UHFFFAOYSA-N 0.000 claims description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 2
- QUHGEDDAENKRCA-UHFFFAOYSA-N (4-propan-2-ylphenyl)methanesulfonamide Chemical compound CC(C)C1=CC=C(CS(N)(=O)=O)C=C1 QUHGEDDAENKRCA-UHFFFAOYSA-N 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 32
- 238000007667 floating Methods 0.000 abstract description 22
- 238000002425 crystallisation Methods 0.000 abstract description 20
- 230000008025 crystallization Effects 0.000 abstract description 20
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 18
- 239000003365 glass fiber Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- 230000003078 antioxidant effect Effects 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- HFPZCAJZSCWRBC-UHFFFAOYSA-N p-cymene Chemical compound CC(C)C1=CC=C(C)C=C1 HFPZCAJZSCWRBC-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 229940124530 sulfonamide Drugs 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229920001431 Long-fiber-reinforced thermoplastic Polymers 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- 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
- C08K3/32—Phosphorus-containing compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/43—Compounds containing sulfur bound to nitrogen
- C08K5/435—Sulfonamides
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a polyamide master batch, which comprises the following components in parts by weight: 40-60 parts of PA6 resin; 30-40 parts of flame retardant; 10-20 parts of PA6/PA66 copolymer; 2-6 parts of benzenesulfonamide auxiliary agent. According to the invention, by compounding a proper amount of the PA6/PA66 copolymer and the benzenesulfonamide auxiliary agent, the crystallization temperature of the polyamide can be adjusted to reach a lower range, and meanwhile, the fiber floating defect of a finished piece prepared by an LFT-D forming technology can be obviously improved, and the thermal decomposition temperature and CTI are improved.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a polyamide masterbatch, a preparation method and application thereof.
Background
Compared with the production processes of GMT (Glass mat reinforced thermoplastic, glass-Mat Reinforce Thermoplastic) and LFT-G (Long-fiber reinforced thermoplastic particles, long-Fiber Reinforce Thermoplastic Granules), the LFT-D forming technology (Long-fiber reinforced thermoplastic plastic direct processing, long Fiber Reinforce Thermoplastic In Direct Processing) relies on the production process of semi-finished plates and granules, and is produced by directly utilizing polymer master batches and Glass fibers, so that the intermediate process of plate making or granulation is omitted, and the method has the advantages of reducing cost, improving design freedom and the like. In the modern manufacturing industry, LFT-D technology has been widely used for replacing traditional materials such as steel, aluminum alloy and SMC, and is applied to the fields of automobiles and industry such as automobile bottom guard plates, battery pack shells, building templates, excrement leakage plates and the like.
Along with the rapid development of new energy automobiles, the types of modified plastics for automobiles and molding technologies are updated continuously. Compared with the traditional fuel oil vehicle, the main power of the new energy vehicle is derived from the storage battery. The charging and discharging voltage of the power storage battery is up to 600-800V and is far higher than the voltage of 12V or 48V of a fuel vehicle starting and stopping power battery, so that the requirements of the new energy battery pack and the peripheral connector materials on the voltage resistance and the fireproof performance are improved. Considering the weight reduction and synergy of new energy automobiles, the fiber reinforced thermoplastic composite material scheme is a future development trend to replace the current aluminum alloy scheme. However, the planar area of the power cell pack case exceeds 1.5m 2 The weight of the battery pack reaches more than 10kg, the traditional injection molding technology is difficult to realize production, and the LFT-D molding technology is widely considered in the industry to be an ideal production mode of battery packs.
The polymer suitable for LFT-D molding and applied to the new energy battery pack shell and peripheral connection equipment needs to have the following advantages: 1. the flame retardant has the advantages of low crystallization temperature, 2. Flame retardant UL 94V-0 grade, 3. CTI (relative tracking index) equal to or more than 600V,4. High mechanical strength, 5. High temperature resistance (higher thermal decomposition temperature), 6. Good appearance (less floating fiber) after processing, and the like. The prior art mainly improves the 6-point requirements by the following methods respectively: 1. by selecting a resin matrix with low crystallization temperature; 2. adding a sufficient amount of flame retardant; 3. selecting a high CTI flame retardant; 4. the high mechanical strength can be improved by selecting high strength high modulus glass fiber or other filling means; 5. selecting a high-temperature resistant flame retardant and high-temperature polyamide resin; 6. adding a surface modifier or modifying the glass fiber. However, the other 6-point requirements are difficult to meet at the same time.
Disclosure of Invention
The invention aims to provide a polyamide master batch which is suitable for an LFT-D forming process.
The invention is realized by the following technical scheme:
the polyamide masterbatch comprises the following components in parts by weight:
40-60 parts of PA6 resin;
10-20 parts of PA6/PA66 copolymer;
30-40 parts of flame retardant;
2-6 parts of benzenesulfonamide auxiliary agent;
the flame retardant is selected from diethyl phosphinate and phosphite compound flame retardants.
Preferably, the weight ratio of the PA6 to the PA66 in the PA6/PA66 copolymer is (90-98): 2-10.
More preferably, the weight ratio of the PA6 to the PA66 in the PA6/PA66 copolymer is (94-96): (4-6), and a small amount of PA66 is copolymerized in a PA6 molecular chain, so that the regularity of the PA6 molecular chain is destroyed, the crystallization capacity and crystallization temperature of the PA6 are reduced, and the fiber floating problem of the composite material obtained by the LFT-D molding process can be effectively improved.
The diethyl phosphinate is at least one selected from the group consisting of aluminum diethyl phosphinate and zinc diethyl phosphinate; the phosphite is at least one selected from aluminum phosphite and magnesium phosphite.
Preferably, the diethylphosphinate comprises 80 to 90wt% of the flame retardant.
The benzene sulfonamide auxiliary agent is one of N-butyl benzene sulfonamide, N-ethyl o-p-toluene sulfonamide, p-carboxyl benzene sulfonamide and p-isopropyl toluene sulfonamide; n-ethyl ortho-para-toluenesulfonamide is preferred.
The viscosity of the PA6/PA66 copolymer is not particularly limited, and experiments show that the technical effect of the invention can be achieved when the relative viscosity of the PA6/PA66 copolymer is 2.2-2.7.
The viscosity of the PA6 resin is not particularly limited in the present invention, and it has been found through experiments that the object of the present invention can be achieved when the relative viscosity of the PA6 resin is 2.0 to 2.8.
The relative viscosity test standard is ISO 307-2019, test conditions: 96% sulfuric acid solution, 25 DEG C
0-2 parts of auxiliary agent selected from antioxidant and lubricant can be selectively added according to actual requirements.
The antioxidant can be N, N '-bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine, 4' -bis (alpha. Alpha-dimethylbenzyl) diphenylamine; the lubricant may be an ethylene acrylic acid copolymer, ethylene bis fatty acid amide.
The preparation method of the polyamide masterbatch comprises the following steps: according to the proportion, all the components are premixed and extruded and granulated by a double-screw extruder, the temperature is 220-250 ℃, and the screw rotating speed is 300-400 rpm, so as to obtain the polyamide master batch.
The application of the polyamide master batch is used for manufacturing components by LFT-D molding technology and the obtained components.
The invention has the following beneficial effects:
according to the invention, by compounding proper amounts of the PA6/PA66 copolymer, the benzenesulfonamide auxiliary agent, the flame retardant and the PA66 copolymerization component into the PA6 resin, the crystallization temperature of the polyamide can be regulated to reach a lower range by destroying the regularity of the PA6 molecular chain and increasing the lubricity among the molecular chains, and meanwhile, the fiber floating defect of a finished piece prepared by an LFT-D molding technology can be obviously improved, and the thermal decomposition temperature and CTI are improved, so that the polyamide master batch meets the requirements of a structural member manufactured by the LFT-D molding technology on CTI (higher than or equal to 600V), crystallization temperature (lower than 180 ℃), high heat resistance (higher than 380 ℃), good appearance (less fiber floating and no whitening).
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
The sources of the raw materials used in the examples and comparative examples are as follows:
PA6 resin a: the relative viscosity of the ISO 307-2019 standard test was 2.5, purchased from sea-sun chemical fiber;
PA6 resin B: the relative viscosity of the ISO 307-2019 standard test was 2.8, purchased from sea-sun chemical fiber;
PA6/PA66 copolymer a: the relative viscosity of the polymer is 2.5-2.6, the weight ratio of the PA6 to the PA66 is 98:2, and the brand PA 6J 250166-1 is provided by polymerization cis;
PA6/PA66 copolymer B: the relative viscosity of the polymer is 2.5-2.6, the weight ratio of the PA6 to the PA66 is 96:4, and the brand PA 6J 250166-2 is provided by polymerization cis;
PA6/PA66 copolymer C: the relative viscosity of the polymer is 2.5-2.6, the weight ratio of the PA6 to the PA66 is 94:6, and the brand PA 6J 250166-3 is provided by the polymerization cis;
PA6/PA66 copolymer D: the relative viscosity of the polymer is 2.5-2.6, the weight ratio of the PA6 to the PA66 is 92:8, and the brand PA 6J 250166-4 is provided by polymerization cis.
PA6/PA66 copolymer E: the relative viscosity of the product measured by ISO 307-2019 standard is 2.5-2.6, and the weight ratio of the PA6 to the PA66 is 90:10, trade name PA 6J 250166-5, supplied by the polymerization company.
PA66: PA66 EP-158, ISO 307-2019 Standard test relative viscosity 2.8, purchased from Zhejiang Huapeak;
aluminum diethylphosphinate: EXOLIT OP 1230, purchased from clariant;
aluminum phosphite: DN68 purchased from Zhuhaiwantong special engineering plastics Co., ltd;
magnesium phosphite: DN78, purchased from Zhuhaiwantong special engineering plastics Co., ltd;
other flame retardants: exolit OP 1312, exolit OP 1314, a complex of aluminum diethylphosphinate and melamine polyphosphate purchased from clariant.
N-butylbenzenesulfonamide: purchased from su Jin Zhong chemical company, inc.
N-ethyl ortho-para-toluene sulfonamide: purchased from su Jin Zhong chemical company, inc.
P-carboxybenzenesulfonamide: purchased from su Jin Zhong chemical company, inc.
P-isopropyl toluene sulfonamide: purchased from su Jin Zhong chemical company, inc.
An antioxidant: n, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine, antioxidant 1098, commercially available;
and (3) a lubricant: ethylene acrylic acid copolymers, commercially available;
glass fiber: are commercially available.
Preparation method of polyamide masterbatch of examples and comparative examples: according to the proportion, all the components are premixed and extruded and granulated by a double-screw extruder, the temperature is 220-250 ℃, and the screw rotating speed is 300-400 rpm, so as to obtain the polyamide master batch.
The testing method comprises the following steps:
(1) Crystallization temperature: the crystallization temperature of the polyamide masterbatch was tested using DSC to characterize the cooling rate of the material in the molten state, with reference to ISO 11357-1-2016.
(2) Thermal decomposition temperature: referring to the ISO 11358-2-2021 standard, the thermal decomposition temperature of polyamide masterbatch was tested under air atmosphere using TG thermal analysis to characterize the material processing thermal stability.
(3) LFT-D molding method: the polyamide master batch is added into LFT-D equipment, glass fiber (the addition amount is 30wt% of the total weight of the product) is added from a blanking port, a cake is obtained through extrusion, and a target product is obtained through online mould pressing, and a certain type of battery pack shell with 30% glass fiber content is taken as an example. The specific process parameters of each section are as follows: 1) Melt blending stage: the first-order melting temperature is 270-280 ℃, and the second-order mixing temperature is 280-290 ℃; 2) And (3) a cake cutting stage: the cutting temperature is 280-300 ℃; 3) And (3) conveying: the heat preservation conveying temperature is 280-290 ℃; and (3) mould pressing: the mold temperature is 130-150 ℃ and the pressure maintaining time is 80s.
LFT-D article appearance: the surface of the LFT-D product was visually observed to see whether or not there was any floating fiber and blushing due to decomposition. The floating fiber grade is 0 grade and is no floating fiber, 1 grade is slight floating fiber (floating fiber is less than or equal to 1-2 in the area of 20mm and floating fiber protrusion is small), 2 grade is obvious in floating fiber (floating fiber is 2-3 in the area of 20mm and floating fiber protrusion is larger), and 3 grade is serious in floating fiber (floating fiber is less than 5 in the area of 20mm and floating fiber protrusion is larger); the blushing grade is 0 grade, no blushing, 1 grade is slightly blushing, 2 grade is obviously blushing, and 3 grade is severely blushing.
CTI of LFT-D article: the CTI values of the bars were tested by cutting 60mm 3.5mm bars from LFT-D articles, referring to IEC60112-2020 standard.
Table 1: examples 1 to 7 Polyamide masterbatch composition (parts by weight) and test results
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | |
| PA6 resin A | 50 | 40 | 60 | 50 | 50 | 50 | |
| PA6 resin B | 50 | ||||||
| PA6/PA66 copolymer A | 15 | 15 | 10 | 20 | 15 | 15 | 15 |
| Diethyl phosphinic acid aluminum | 24 | 24 | 27 | 34 | 21 | 27 | 28.5 |
| Aluminum phosphite | 6 | 3 | 6 | 9 | 3 | 1.5 | |
| Magnesium phosphite | 6 | ||||||
| N-butylbenzenesulfonamide | 3 | 3 | 2 | 6 | 3 | 3 | 3 |
| Antioxidant | 0.2 | ||||||
| Lubricant | 0.3 | ||||||
| Crystallization temperature, DEG C | 178 | 178.2 | 178.4 | 177.2 | 178.4 | 178.3 | 178.6 |
| Thermal decomposition temperature, DEG C | 391 | 390 | 390 | 386 | 385 | 392 | 388 |
| Fiber grade of float | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Blushing grade | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CTI,V | 600 | 600 | 600 | 600 | 600 | 600 | 600 |
As can be seen from examples 1-4, the technical scheme of the invention can realize CTI value of 600V and has the advantages of lower crystallization temperature, high thermal decomposition temperature and good appearance.
As is clear from examples 1/5/6/7, the preferable flame retardant formulation has a lower crystallization temperature and a higher thermal decomposition temperature.
Table 2: examples 8 to 14 Polyamide masterbatch composition (parts by weight) and test results
| Example 8 | Example 9 | Example 10 | Example 11 | Example 12 | Example 13 | Example 14 | |
| PA6 resin A | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| PA6/PA66 copolymer A | 15 | 15 | 15 | ||||
| PA6/PA66 copolymer B | 15 | ||||||
| PA6/PA66 copolymer C | 15 | ||||||
| PA6/PA66 copolymer D | 15 | ||||||
| PA6/PA66 copolymer E | 15 | ||||||
| Diethyl phosphinic acid aluminum | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Aluminum phosphite | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| N-butylbenzenesulfonamide | 3 | 3 | 3 | 3 | |||
| N-ethyl ortho-para-toluene sulfonamide | 3 | ||||||
| Paramyxobenzenesulfonamides | 3 | ||||||
| Para-isopropyl toluene sulfonamide | 3 | ||||||
| Crystallization temperature, DEG C | 178 | 177.9 | 177.7 | 177.4 | 178.1 | 178.2 | 178.4 |
| Thermal decomposition temperature, DEG C | 393 | 395 | 391 | 390 | 394 | 392 | 390 |
| Fiber grade of float | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| Blushing grade | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CTI,V | 600 | 600 | 600 | 600 | 600 | 600 | 600 |
As is clear from examples 1/8-11, the weight ratio of PA6 to PA66 in the PA6/PA66 copolymer has a significant effect on the crystallization temperature, the thermal decomposition temperature, and the float fiber.
As is evident from examples 1/12 to 14, N-ethyl ortho-para-toluenesulfonamide is preferably thermally decomposed at a higher temperature.
Table 3: comparative example Polyamide masterbatch composition (parts by weight) and test results
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 | |
| PA6 resin A | 50 | 60 | 40 | 50 | 50 | 50 | 30 |
| PA6/PA66 copolymer A | 5 | 25 | 15 | 15 | 15 | 15 | |
| PA66 | 15 | ||||||
| Exolit OP 1312 | |||||||
| Exolit OP 1314 | |||||||
| Diethyl phosphinic acid aluminum | 24 | 24 | 24 | 24 | 24 | 24 | 40 |
| Aluminum phosphite | 6 | 6 | 6 | 6 | 6 | 6 | 10 |
| N-butylbenzenesulfonamide | 3 | 3 | 3 | 0 | 1 | 7 | 3 |
| Crystallization temperature, DEG C | 176.9 | 178.6 | 176.4 | 182.7 | 180.4 | 177.5 | 177.2 |
| Thermal decomposition temperature, DEG C | 399 | 394 | 377 | 394 | 392 | 378 | 387 |
| Fiber grade of float | 3 | 2 | 0 | 3 | 2 | 0 | 3 |
| Blushing grade | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| CTI,V | 600 | 600 | 600 | 600 | 600 | 550 | 600 |
As is clear from comparative example 1, the PA66 replaces the PA6/PA66 copolymer, and the thermal decomposition temperature is higher, but the floating fiber is serious, and the requirement of LFT-D cannot be met.
As is clear from comparative examples 2/3, the addition amount of the PA6/PA66 copolymer is too low to improve the fiber floating defect, and when the addition amount of the PA6/PA66 copolymer is too high, the crystallization temperature is lower, but the thermal decomposition temperature is too much lowered, and the requirement of LFT-D cannot be satisfied.
As is clear from comparative examples 4/5, the crystallization temperature was higher and the floating fiber was poor when N-butylbenzenesulfonamide was not added; when the addition amount of N-butylbenzenesulfonamide is too low, the crystallization temperature is high, and the floating fiber reaches level 2, so that the requirement of LFT-D cannot be met.
As is clear from comparative example 6, the addition amount of N-butylbenzenesulfonamide was excessive, and although the crystallization temperature was lowered to 177.5 ℃, the thermal decomposition temperature was also lowered more severely, CTI was lowered by 50V, and the appearance of the product was easily whitened, failing to meet the requirements of LFT-D.
As is clear from comparative example 7, if the content of the flame retardant is too high, the floating fiber is serious.
Table 3 shows the sequence
| Comparative example 8 | Comparative example 9 | |
| PA6 resin A | 50 | 50 |
| PA6/PA66 copolymer A | 15 | 15 |
| PA66 | ||
| Exolit OP 1312 | 30 | |
| Exolit OP 1314 | 30 | |
| Diethyl phosphinic acid aluminum | ||
| Aluminum phosphite | ||
| N-butylbenzenesulfonamide | 3 | 3 |
| Crystallization temperature, DEG C | 177.9 | 177.9 |
| Thermal decomposition temperature, DEG C | 382 | 381 |
| Fiber grade of float | 0 | 0 |
| Blushing grade | 3 | 3 |
| CTI,V | 600 | 600 |
As is clear from comparative examples 8 and 9, the blushing phenomenon is serious when the flame retardant which is commonly used in the LFT-D molding method at the present stage is used.
Claims (10)
1. The polyamide masterbatch is characterized by comprising the following components in parts by weight:
40-60 parts of PA6 resin;
10-20 parts of PA6/PA66 copolymer;
30-40 parts of flame retardant;
2-6 parts of benzenesulfonamide auxiliary agent;
the flame retardant is selected from diethyl phosphinate and phosphite compound flame retardants.
2. The polyamide masterbatch according to claim 1, characterized in that the weight ratio of PA6 to PA66 in the PA6/PA66 copolymer is (90-98): 2-10; more preferably, the weight ratio of PA6 to PA66 in the PA6/PA66 copolymer is (94-96): 4-6.
3. The polyamide masterbatch according to claim 2, wherein said diethyl phosphinate is at least one selected from the group consisting of aluminum diethyl phosphinate and zinc diethyl phosphinate; the phosphite is at least one selected from aluminum phosphite and magnesium phosphite.
4. The polyamide masterbatch according to claim 1, characterized in that the diethylphosphinate represents 80-90 wt.% of the flame retardant.
5. The polyamide masterbatch according to claim 1, wherein the benzenesulfonamide auxiliary is one of N-butylbenzenesulfonamide, N-ethyl o-p-toluenesulfonamide, p-carboxybenzenesulfonamide, and p-isopropyltoluenesulfonamide; n-ethyl ortho-para-toluenesulfonamide is preferred.
6. The polyamide masterbatch of claim 1 wherein the PA6/PA66 copolymer has a relative viscosity of 2.2-2.7, and the relative viscosity test criteria is ISO 307-2019, test conditions: 96% sulfuric acid solution, 25 ℃.
7. The polyamide masterbatch of claim 1 wherein the PA6 resin has a relative viscosity of 2.0-2.8, and the relative viscosity test criteria is ISO 307-2019, test conditions: 96% sulfuric acid solution, 25 ℃.
8. The polyamide masterbatch according to claim 1, further comprising 0-2 parts by weight of an auxiliary agent selected from at least one of antioxidants and lubricants.
9. The process for the preparation of polyamide masterbatch according to any one of claims 1 to 8 characterized by the following steps: according to the proportion, all the components are premixed and extruded and granulated by a double-screw extruder, the temperature is 220-250 ℃, and the screw rotating speed is 300-400 rpm, so as to obtain the polyamide master batch.
10. Use of the polyamide masterbatch according to any one of claims 1-8 for manufacturing components by LFT-D molding techniques, and the resulting components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157708.2A CN116656120A (en) | 2022-02-21 | 2022-02-21 | Polyamide master batch and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157708.2A CN116656120A (en) | 2022-02-21 | 2022-02-21 | Polyamide master batch and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116656120A true CN116656120A (en) | 2023-08-29 |
Family
ID=87722967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210157708.2A Pending CN116656120A (en) | 2022-02-21 | 2022-02-21 | Polyamide master batch and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116656120A (en) |
-
2022
- 2022-02-21 CN CN202210157708.2A patent/CN116656120A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101654535B (en) | Halogen-free flame-retardant long glass fiber reinforcement recycled polypropylene material and preparation method thereof | |
| KR101805230B1 (en) | Flame-Retardant Polyamide Resin Composition and Molded Article Using Same | |
| CN104918997A (en) | Polybutylene terephthalate resin composition, and molded article | |
| CN109312153B (en) | Thermoplastic resin composition and molded article obtained by molding same | |
| CN111073242A (en) | High-melt-strength halogen-free flame-retardant blow-molded PC/ABS alloy and preparation method thereof | |
| EP3546511A1 (en) | Polyamide compositions | |
| KR20150013579A (en) | Polycarbonate resin composition with superior fluidity and molding thereof | |
| CN110903644A (en) | Bio-based PA56T and PA56 composite material and preparation method thereof | |
| CN115160688A (en) | Flame-retardant polypropylene composite material for new energy automobile battery pack upper cover and preparation method thereof | |
| CN112322020B (en) | Polyphenyl ether resin composition and preparation method thereof, and wire slot and preparation method thereof | |
| CN116656120A (en) | Polyamide master batch and preparation method and application thereof | |
| CN102838861B (en) | Resin composition and production method thereof | |
| KR20110089127A (en) | Injection molded article and method for the manufacture thereof | |
| JP2007246561A (en) | Polyamide resin molded article | |
| CN111117168B (en) | Flame-retardant master batch and aromatic polymer composition containing same | |
| CN114149675A (en) | Polyester alloy composition for improving high-temperature welding performance and application thereof | |
| CN114479401A (en) | Halogen-free flame-retardant PC/ABS composition and preparation method and application thereof | |
| CN114591608B (en) | Glass fiber reinforced PET composition easy to release and preparation method and application thereof | |
| CN114369306B (en) | Polypropylene composite material and preparation method and application thereof | |
| CN110724325B (en) | Flame-retardant antistatic rotational molding polyolefin composition and preparation method thereof | |
| JP2023044219A (en) | Method for producing flame-retardant polycarbonate resin composition pellet | |
| CN112358682A (en) | Low-odor low-VOC flame-retardant polypropylene material and preparation forming method, application and preparation equipment thereof | |
| CN109233242B (en) | Polyphenyl ether resin composite material and preparation method and application thereof | |
| CN117487347A (en) | Rapid-forming flame-retardant nylon composite material and preparation method and application thereof | |
| JP2023007709A (en) | Method for producing flame-retardant polycarbonate resin composition pellets |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |