CN113045893A - Reinforced flame-retardant nylon and preparation method thereof - Google Patents
Reinforced flame-retardant nylon and preparation method thereof Download PDFInfo
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- 229920001778 nylon Polymers 0.000 title claims abstract description 113
- 239000004677 Nylon Substances 0.000 title claims abstract description 111
- 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 title claims abstract description 65
- 239000003063 flame retardant Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 58
- 239000002994 raw material Substances 0.000 claims abstract description 35
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 31
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000012745 toughening agent Substances 0.000 claims abstract description 29
- 239000011324 bead Substances 0.000 claims abstract description 28
- 239000011521 glass Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 27
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004595 color masterbatch Substances 0.000 claims abstract description 25
- 239000003365 glass fiber Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000011049 filling Methods 0.000 claims description 17
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 14
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 14
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 13
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 13
- 229920013636 polyphenyl ether polymer Polymers 0.000 claims description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 13
- 239000013538 functional additive Substances 0.000 claims description 12
- 125000001844 prenyl group Chemical group [H]C([*])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 9
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 description 17
- 239000004033 plastic Substances 0.000 description 17
- 238000012360 testing method Methods 0.000 description 17
- 238000003756 stirring Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 10
- 239000012752 auxiliary agent Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- -1 naphthenic acid rare earth Chemical class 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- ASUAYTHWZCLXAN-UHFFFAOYSA-N prenol Chemical compound CC(C)=CCO ASUAYTHWZCLXAN-UHFFFAOYSA-N 0.000 description 2
- 230000003678 scratch resistant effect Effects 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- QVDTXNVYSHVCGW-ONEGZZNKSA-N isopentenol Chemical compound CC(C)\C=C\O QVDTXNVYSHVCGW-ONEGZZNKSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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 application relates to the field of high polymer materials, and particularly discloses reinforced flame-retardant nylon and a preparation method thereof. The reinforced flame-retardant nylon comprises the following components in parts by weight: 43-46 parts of a nylon mixture; 12-15 parts of red phosphorus; 0.8-1.4 parts of a toughening agent; 32-38 parts of glass fiber; 2-3 parts of glass beads; 0.2-0.5 part of silicone powder; 0.2-0.4 part of antioxidant; 3-5 parts of color masterbatch. The preparation method comprises the following steps: uniformly mixing a nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant and a color master batch in a high-speed mixer to obtain a raw material mixture; and adding the raw material mixture into a hopper of a double-screw extruder, simultaneously adding glass fibers from a side feed, melting, mixing and extruding the raw material mixture, and cooling and granulating to obtain the reinforced flame-retardant nylon. The molding of the reinforced flame-retardant nylon in the application is not easy to cause large uneven shrinkage, so that the molding with excellent dimensional stability can be obtained, and the improvement of the overall applicability of the reinforced flame-retardant nylon is facilitated.
Description
Technical Field
The application relates to the field of high polymer materials, in particular to reinforced flame-retardant nylon and a preparation method thereof.
Background
The nylon engineering plastic has the advantages of high mechanical property, durability, corrosion resistance, heat resistance and the like, and is widely applied to the industries of electronics, electrics, automobiles, buildings, office equipment, machinery, aerospace and the like.
The invention discloses a flame-retardant wear-resistant scratch-resistant PA66 composite material and a preparation method thereof in Chinese invention patent application with publication number CN111187512A, wherein the PA66 composite material comprises the following components in parts by weight: PA 66100-120 parts, coupling agent 1-5 parts, mica powder 15-35 parts, antioxidant 1-10 parts, heat stabilizer 1-10 parts, compatilizer 1-10 parts, phosphorus flame retardant 20-40 parts, dispersant 1-10 parts, and glass fiber 30-40 parts. The PA66 composite material is prepared by mica powder treatment, material mixing and extrusion granulation, has excellent flame retardant, wear-resistant and scratch-resistant performances, expands the application range of nylon materials and improves the market competitiveness of the materials.
In view of the above-mentioned related technologies, the inventor believes that the mica powder has a chemical composition, structure and structure similar to that of kaolin, has certain characteristics of clay minerals, has certain viscosity, and is likely to cause severe uneven shrinkage and large warpage of a molded plastic part due to the interaction with other raw material components, thereby causing poor overall applicability of the molded plastic part.
Disclosure of Invention
In order to improve the dimensional stability of a nylon molding plastic part, the application provides reinforced flame-retardant nylon and a preparation method thereof.
In a first aspect, the present application provides a reinforced flame retardant nylon, which adopts the following technical scheme:
the reinforced flame-retardant nylon comprises the following components in parts by weight:
43-46 parts of a nylon mixture;
12-15 parts of red phosphorus;
0.8-1.4 parts of a toughening agent;
32-38 parts of glass fiber;
2-3 parts of glass beads;
0.2-0.5 part of silicone powder;
0.2-0.4 part of antioxidant;
3-5 parts of color masterbatch.
By adopting the technical scheme, the glass beads have good dispersibility, can protect products from thermal shock caused by alternate change between rapid heating and rapid cooling conditions, enhance the toughness of plastics and do not reduce the rigidity of the plastics. The silicone powder can improve the processing fluidity and demoulding performance of plastics, improve the surface function of the plastics, and endow the plastics with excellent wear resistance, scratch resistance and flame retardant property. The applicant finds that the silicone powder and the glass beads are matched for use, and a toughening agent is used for assisting, so that the interfacial compatibility of non-polar inorganic minerals and organic matters can be improved, the infiltration effect is achieved, good stability and non-migration performance are exerted, the formed plastic part is not prone to large uneven shrinkage, the plastic part with excellent size stability can be obtained, and the overall applicability of the reinforced flame-retardant nylon is improved.
Preferably, 3-7 parts by weight of functional additives are added into the reinforced flame-retardant nylon, the functional additives mainly comprise prenyl polyoxyethylene ether and polyphenyl ether, and the weight part ratio of the prenyl polyoxyethylene ether to the polyphenyl ether is 1: (1.2-1.5).
By adopting the technical scheme, when the functional auxiliary agents of the prenyl polyoxyethylene ether and the polyphenylene ether are used and melted, the-OH group on the polyphenylene ether and a part of maleic anhydride on the prenyl polyoxyethylene ether are subjected to chemical reaction, and then the functional auxiliary agents and the maleic anhydride are melted and extruded with the nylon mixture, and the remaining maleic anhydride is further subjected to chemical reaction with-NH on the nylon molecule2The group reaction forms an excellent and stable interface layer, which not only greatly improves the impact strength of the composite material, but also improves the dimensional stability of the reinforced flame-retardant nylon molding plastic part.
Preferably, 4-10 parts of filling aid by weight is added into the reinforced flame-retardant nylon, the filling aid mainly comprises nano montmorillonite and rare earth naphthenate, and the weight part ratio of the nano montmorillonite to the rare earth naphthenate is 1: (0.2-0.4).
By adopting the technical scheme, the filling additive consisting of the nano montmorillonite and the naphthenic acid rare earth can be filled and dispersed among the raw materials of all components to form an intercalation structure, so that the interface bonding strength among the raw materials is improved on one hand, and the internal stress of the reinforced flame-retardant nylon in the molding process of a plastic part can be uniformly diffused on the other hand, so that the reinforced flame-retardant nylon is not easy to shrink greatly and uniformly, and the application stability of the reinforced flame-retardant nylon is improved.
Preferably, the nylon mixture is mainly prepared by mixing PA66 and PA 6.
By adopting the technical scheme, the PA66 has good impact resistance, excellent wear resistance and good dimensional stability; PA6 has excellent thermal stability, high heat resistance, good dimensional stability, high surface quality and good warpage resistance; and the PA66 and the PA6 are mixed for use, so that the cost can be effectively reduced, and the complementary advantages can be formed.
Preferably, the weight part ratio of the PA66 to the PA6 is (1.2-1.5): 1.
by adopting the technical scheme, the PA66 and the PA6 mixed in the proportion can form a uniform and stable dispersion system, and the compatibility with other raw materials of each component is excellent.
Preferably, the toughening agent is POE-g-MAH (maleic anhydride grafted polyethylene octene elastomer).
By adopting the technical scheme, the toughening agent has excellent viscosity, thermal stability and oxidation resistance, can improve the compatibility among the raw materials of each component, and has an excellent promoting effect on enhancing the toughness of the flame-retardant nylon.
Preferably, the antioxidant mainly comprises Irganox1010 and Irganox168, and the weight part ratio of the Irganox1010 to the Irganox168 is 1: (0.9-1.3). .
By adopting the technical scheme, the antioxidants with the types and the mixing ratio can well capture active free radicals to generate inactive free radicals or decompose polymer hydroperoxide generated in the oxidation process, so that the chain reaction is terminated, the oxidation process of the polymer is delayed, and the practical life of the reinforced flame-retardant nylon is prolonged.
In a second aspect, the application provides a preparation method of reinforced flame-retardant nylon, which adopts the following technical scheme:
a preparation method of reinforced flame-retardant nylon comprises the following steps:
(1) preparing raw materials comprising a nylon mixture, red phosphorus, a toughening agent, glass fibers, glass beads, silicone powder, an antioxidant and a color master batch according to a ratio;
(2) uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant and a color master batch in the step (1) in a high-speed mixer to obtain a raw material mixture;
(3) and (3) adding the raw material mixture obtained in the step (2) into a hopper of a double-screw extruder, simultaneously adding glass fibers from a side feed, melting, mixing and extruding the raw material mixture, and cooling and granulating to obtain the reinforced flame-retardant nylon.
By adopting the technical scheme, the preparation method is simple in operation process, stable in production, excellent in quality of the obtained product and good in overall applicability.
In summary, the present application has the following beneficial effects:
1. according to the preparation method, the silicone powder and the glass beads are matched for use, and the toughening agent is used for assisting, so that the interface compatibility of non-polar inorganic minerals and organic matters can be improved, the infiltration effect is achieved, good stability and non-migration performance are exerted, the formed plastic part is not prone to large uneven shrinkage, the plastic part with excellent size stability can be obtained, and the improvement of the overall applicability of the flame-retardant nylon is facilitated;
2. the functional auxiliary agent containing the prenyl polyoxyethylene ether and the polyphenyl ether is added, so that the impact strength of the composite material is greatly improved, and the dimensional stability of the flame-retardant nylon molding plastic part can be improved;
3. the filling aid consisting of the nano montmorillonite and the naphthenic acid rare earth is added and dispersed among the raw materials of each component to form an intercalation structure, so that the reinforced flame-retardant nylon is not easy to shrink greatly and unevenly in the molding process of a plastic part, and the application stability of the reinforced flame-retardant nylon is improved.
Detailed Description
The present application will be described in further detail with reference to examples.
Examples
Example 1
The reinforced flame-retardant nylon comprises the following components in parts by weight as shown in Table 1, and is prepared by the following steps:
(1) preparing raw materials comprising a nylon mixture, red phosphorus, a toughening agent, glass fibers, glass beads, silicone powder, an antioxidant and a color master batch according to a ratio;
(2) uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant and a color master batch in the step (1) in a high-speed mixer, and stirring at 1500rpm for 20min to obtain a raw material mixture;
(3) and (3) adding the raw material mixture obtained in the step (2) into a hopper of a double-screw extruder, simultaneously adding glass fibers from a side feed, melting, mixing and extruding the mixture and the raw material mixture, cooling and granulating at the screw rotating speed of 150rpm and the extrusion temperature of 245 ℃ to obtain the reinforced flame-retardant nylon.
Note: the nylon mixture in the above steps is obtained by mixing PA66 and PA6, and the weight portion ratio of PA66 to PA6 is 1.35: 1, wherein PA66 is available from samara EPR27 and PA6 is available from samara B195 UP; red phosphorus was purchased from PRM650, a research and design institute for middle-blue-light chemical industry; the antioxidant mainly comprises Irganox1010 and Irganox168, and the weight portion ratio of the Irganox1010 to the Irganox168 is 1: 1.1; the glass beads are purchased from US baud 5020FPS hollow glass beads; silicone powder is purchased from ST-LS100, a chemical material Co., Ltd, Saibeda (Beijing); the glass fiber is purchased from boulder glass fiber 988A; the toughening agent is POE-g-MAH which is purchased from JG25200 of Hangzhou polymer cis new materials GmbH; the color masterbatch is purchased from cabot 1401 black.
Examples 2 to 4
A reinforced flame-retardant nylon is different from example 1 in that the components and the corresponding parts by weight are shown in Table 1.
TABLE 1 Components and parts by weight (kg) thereof in examples 1-4
Example 5
The reinforced flame-retardant nylon is different from the nylon in example 1 in that the weight part ratio of PA66 to PA6 in a nylon mixture is 1.2: 1.
example 6
The reinforced flame-retardant nylon is different from the nylon in example 1 in that the weight part ratio of PA66 to PA6 in a nylon mixture is 1.5: 1.
example 7
The reinforced flame-retardant nylon is different from the nylon in example 1 in that the weight part ratio of Irganox1010 to Irganox168 in the antioxidant is 1: 0.9.
example 8
The reinforced flame-retardant nylon is different from the nylon in example 1 in that the weight part ratio of Irganox1010 to Irganox168 in the antioxidant is 1: 1.3.
example 9
The reinforced flame-retardant nylon is different from the nylon obtained in example 1 in that the step (2) is specifically set as follows: uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 5 parts of a functional additive in the step (1) in a high-speed mixer, wherein the functional additive is prepared from isopentenol polyoxyethylene ether and polyphenyl ether in a mass ratio of 1: 1.35, stirring at 1500rpm for 20min to obtain a raw material mixture; wherein the isoamylol polyoxyethylene ether is purchased from chemical company Limited of Desna of Jiangsu, and the polyphenyl ether is purchased from a Saber base CRN-530 mixed polyphenyl ether.
Example 10
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 9 in that the step (2) is specifically configured as follows: uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 3 parts of functional additives in the step (1) in a high-speed mixer, wherein the functional additives are prepared from prenyl polyoxyethylene ether and polyphenyl ether in a mass ratio of 1: 1.2, stirring at 1500rpm for 20min to obtain the raw material mixture.
Example 11
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 9 in that the step (2) is specifically configured as follows: uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 7 parts of functional additives in the step (1) in a high-speed mixer, wherein the functional additives are prepared from prenyl polyoxyethylene ether and polyphenyl ether in a mass ratio of 1: 1.5, stirring at 1500rpm for 20min to obtain the raw material mixture.
Example 12
The reinforced flame-retardant nylon is different from the nylon obtained in example 1 in that the step (2) is specifically set as follows: uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 7 parts of a filling aid in the step (1) in a high-speed mixer, wherein the filling aid is prepared from nano montmorillonite and rare earth naphthenate in a mass ratio of 1: 0.2, stirring at 1500rpm for 20min to obtain a raw material mixture; wherein the nano montmorillonite is purchased from Zhejiang Fenghong New materials GmbH, and has a model of DK 5; rare earth naphthenates were purchased from Xinheng 172.
Example 13
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 12 in that the step (2) is specifically configured as follows: uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 4 parts of a filling aid in the step (1) in a high-speed mixer, wherein the filling aid is prepared from nano montmorillonite and rare earth naphthenate in a mass ratio of 1: 0.3, stirring at 1500rpm for 20min to obtain the raw material mixture.
Example 14
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 12 in that the step (2) is specifically configured as follows: uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 10 parts of a filling aid in the step (1) in a high-speed mixer, wherein the filling aid is prepared from nano montmorillonite and rare earth naphthenate in a mass ratio of 1: 0.4, stirring at 1500rpm for 20min to obtain the raw material mixture.
Comparative example
Comparative example 1
The reinforced flame-retardant nylon is different from the nylon obtained in example 1 in that the step (2) is specifically set as follows: and (2) uniformly mixing the nylon mixture, the red phosphorus, the toughening agent, the antioxidant and the color master batch in the step (1) in a high-speed mixer, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 2
The reinforced flame-retardant nylon is different from the nylon obtained in example 1 in that the step (2) is specifically set as follows: and (2) uniformly mixing the nylon mixture, the red phosphorus, the glass beads, the antioxidant and the color master batch in the step (1) in a high-speed mixer, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 3
The reinforced flame-retardant nylon is different from the nylon obtained in example 1 in that the step (2) is specifically set as follows: and (2) uniformly mixing the nylon mixture obtained in the step (1), red phosphorus, silicone powder, antioxidant and color master batch in a high-speed mixer, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 4
The reinforced flame-retardant nylon is different from the nylon obtained in example 1 in that the step (2) is specifically set as follows: and (2) uniformly mixing the nylon mixture obtained in the step (1), red phosphorus, an antioxidant and a color master batch in a high-speed mixer, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 5
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 9 in that the step (2) is specifically configured as follows: and (2) uniformly mixing the nylon mixture obtained in the step (1), red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 5 parts of a functional auxiliary agent in a high-speed mixer, wherein the functional auxiliary agent is isoamylol polyoxyethylene ether, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 6
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 9 in that the step (2) is specifically configured as follows: and (2) uniformly mixing the nylon mixture obtained in the step (1), red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 5 parts of a functional additive in a high-speed mixer, wherein the functional additive is polyphenyl ether, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 7
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 12 in that the step (2) is specifically configured as follows: and (2) uniformly mixing the nylon mixture obtained in the step (1), red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 7 parts of a filling aid in a high-speed mixer, wherein the filling aid is nano montmorillonite, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Comparative example 8
A reinforced flame-retardant nylon, which is different from the nylon obtained in example 12 in that the step (2) is specifically configured as follows: and (2) uniformly mixing the nylon mixture obtained in the step (1), red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant, a color master batch and 7 parts of a filling aid in a high-speed mixer, wherein the filling aid is naphthenic acid rare earth, and stirring at 1500rpm for 20min to obtain a raw material mixture.
Performance testing test samples: the reinforced flame-retardant nylons obtained in examples 1 to 14 were used as test samples 1 to 14, and the reinforced flame-retardant nylons obtained in comparative examples 1 to 8 were used as control samples 1 to 8.
The test method comprises the following steps: the test samples 1 to 14 and the control samples 1 to 8 were dried at 120 ℃ for 4 hours, and injection-molded by an injection molding machine into a standard sample of 80mm by 40mm by 20mm and 2mm in thickness, wherein one side of 80mm by 40mm was open, the injection temperature was 260 ℃ and the injection pressure was 35 Mpa. After the standard sample is demoulded, the deformation of the side wall with 80mm x 20mm is measured and recorded as the deformation of the long side, and the deformation of the side wall with 40mm x 20mm is measured and recorded as the deformation of the short side, and the deformation is accurate to 0.01 mm.
And (3) test results: the test results of the test samples 1 to 14 and the control samples 1 to 8 are shown in Table 2. As can be seen from Table 2, the test results of the test sample 1 and the control samples 1 to 4 are compared, the deformation of the plastic part can be greatly reduced by using the silicone powder and the glass beads in a matching manner and assisting the toughening agent, and the overall improvement effect is limited by using the silicone powder, the glass beads and the toughening agent separately; the comparison of the test results of the test sample 1, the test samples 9-11 and the control samples 5-6 can obtain that the deformation of the plastic part can be reduced by adding the functional auxiliary agent consisting of the prenyl alcohol polyoxyethylene ether and the polyphenyl ether, and the prenyl alcohol polyoxyethylene ether and the polyphenyl ether can play a good compounding synergistic effect. The test results of the test sample 1, the test samples 12-14 and the control samples 7-8 are compared, the use of the filling aid consisting of the nano montmorillonite and the naphthenic acid rare earth is added, the deformation of a plastic part can be reduced, and the nano montmorillonite and the naphthenic acid rare earth can play a good role in compounding and synergism.
TABLE 2 test results of test samples 1-14 and control samples 1-8
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The reinforced flame-retardant nylon is characterized by comprising the following components in parts by weight:
43-46 parts of a nylon mixture;
12-15 parts of red phosphorus;
0.8-1.4 parts of a toughening agent;
32-38 parts of glass fiber;
2-3 parts of glass beads;
0.2-0.5 part of silicone powder;
0.2-0.4 part of antioxidant;
3-5 parts of color masterbatch.
2. The reinforced flame retardant nylon of claim 1, wherein: the reinforced flame-retardant nylon is also added with 3-7 parts by weight of functional additives, the functional additives mainly comprise prenyl polyoxyethylene ether and polyphenyl ether, and the weight part ratio of the prenyl polyoxyethylene ether to the polyphenyl ether is 1: (1.2-1.5).
3. The reinforced flame retardant nylon of claim 1, wherein: the reinforced flame-retardant nylon is also added with a filling additive with the weight portion of 4-10 parts, the filling additive mainly comprises nano montmorillonite and rare earth naphthenate, and the weight portion ratio of the nano montmorillonite to the rare earth naphthenate is 1: (0.2-0.4).
4. The reinforced flame retardant nylon of claim 1, wherein: the nylon mixture is mainly prepared by mixing PA66 and PA 6.
5. The reinforced flame retardant nylon of claim 4, wherein: the PA66 and PA6 are mixed according to the weight part ratio of (1.2-1.5): 1.
6. the reinforced flame retardant nylon of claim 1, wherein: the toughening agent is POE-g-MAH (maleic anhydride grafted polyethylene octene elastomer).
7. The reinforced flame retardant nylon of claim 1, wherein: the antioxidant mainly comprises Irganox1010 and Irganox168, and the weight part ratio of the Irganox1010 to the Irganox168 is 1: (0.9-1.3).
8. The method for preparing the reinforced flame-retardant nylon of claim 1, which is characterized by comprising the following steps:
(1) preparing raw materials comprising a nylon mixture, red phosphorus, a toughening agent, glass fibers, glass beads, silicone powder, an antioxidant and a color master batch according to a ratio;
(2) uniformly mixing the nylon mixture, red phosphorus, a toughening agent, glass beads, silicone powder, an antioxidant and a color master batch in the step (1) in a high-speed mixer to obtain a raw material mixture;
(3) and (3) adding the raw material mixture obtained in the step (2) into a hopper of a double-screw extruder, simultaneously adding glass fibers from a side feed, melting, mixing and extruding the raw material mixture, and cooling and granulating to obtain the reinforced flame-retardant nylon.
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