CN113817317A - Bromine-antimony flame-retardant nylon composite material with low pungent smell, and preparation method and application thereof - Google Patents
Bromine-antimony flame-retardant nylon composite material with low pungent smell, and preparation method and application thereof Download PDFInfo
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- CN113817317A CN113817317A CN202111124481.3A CN202111124481A CN113817317A CN 113817317 A CN113817317 A CN 113817317A CN 202111124481 A CN202111124481 A CN 202111124481A CN 113817317 A CN113817317 A CN 113817317A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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- 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
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention discloses a bromine-antimony flame retardant nylon composite material with low pungent smell, a preparation method and application thereof, the invention adopts brominated polystyrene flame retardant with low molecular weight, and is matched with a flow modifier to reduce friction heat in the thermal processing process of the composite material, reduce the melt temperature of the composite material, reduce the thermal decomposition of the flame retardant, and also introduces an odor remover to release partial water molecules in the extrusion processing process, and the formed high-pressure water vapor takes out substances such as small molecules generated by the decomposition of the flame retardant from a vacuum system, thereby further reducing pungent smell gas of the composite material, obtaining the bromine-antimony flame retardant nylon composite material with low pungent smell, greatly improving the problem of high pungent smell in the thermal processing or long-term storage process of the traditional bromine-antimony flame retardant nylon composite material, improving the processing environment of factories, being more environment-friendly, the odor-resistant and water-proof paint meets the fields with higher requirements on odor, such as automobile interior decoration, water pump/water valve parts, household appliance shells and the like.
Description
Technical Field
The invention relates to the technical field of environment-friendly brominated flame-retardant nylon, in particular to a bromine-antimony flame-retardant nylon composite material with low pungent smell, and a preparation method and application thereof.
Background
The polyamide resin has excellent comprehensive properties such as mechanical property, barrier property, heat resistance, wear resistance, chemical corrosion resistance and the like, particularly the mechanical property and the heat resistance are greatly improved after the glass fiber is reinforced and modified, and the composite material is widely applied to the fields of machinery manufacturing industry, household appliances, electric tools, electronic appliances, transportation and the like. The polyamide has a certain flame retardant property, pure resin can achieve V-2 flame retardance, but a dripping ignition phenomenon exists, and after the glass fiber is added for reinforcement, due to the candle core effect of the glass fiber, the composite material can only achieve the HB flame retardant grade, so that the application field of the composite material is greatly limited. In the fields of electronics and electrics, household appliances, new energy automobiles and the like, most plastic parts are in direct or indirect contact with current, so that specific flame retardant requirements are put on materials, such as the V-0 flame retardant requirement of UL94, the glowing filament requirement in IEC60335-1, the needle flame requirement in IEC695-2 and the like.
The nylon flame retardant modification has various schemes, common flame retardant types comprise an environment-friendly brominated flame retardant, a halogen-free organic phosphorus flame retardant, a halogen-free red phosphorus flame retardant, an inorganic hydroxide flame retardant, a halogen-free nitrogen flame retardant and the like, and each flame retardant system has respective advantages and disadvantages, for example, the halogen-free organic phosphorus flame retardant has excellent electrical property and color matching property, but the humidity-heat-aging resistance is relatively poor; the halogen-free red phosphorus flame retardant has excellent mechanical property and electrical property, but can only be used as black and dark red products; the halogen-free nitrogen system flame retardant has excellent color matching performance and high cost performance, but the flame retardant can only reach V-2 grade after the glass fiber is added, so that various flame retardant systems have more suitable application fields and scenes. However, from the comprehensive product performance and the market application scale, the environment-friendly brominated flame-retardant system is still the most mainstream flame-retardant modification method at present, and the product has a plurality of excellent properties, such as: the glow wire has excellent performance, and can meet the requirement of high glow wire specified in IEC60335-1, namely the GWIT is more than or equal to 750 ℃ for the insulation material support of appliances which are not watched by people and the current flowing through the insulation material support is more than 0.2A; the high-efficiency flame retardant property can achieve the UL 94V-0 grade under the condition of 0.3mm thickness, and a scheme is provided for the design of thin-walled products; excellent mechanical property, and particularly after glass fiber is added, the application range of the composite material is greatly expanded; the color matching property is good, products with different colors can be matched, and a scheme is provided for the requirement of product color diversification. However, various types of flame retardants have certain odor, especially at high temperature, the odor is more obvious and even pungent, which deteriorates the workshop environment during the thermal processing (such as injection molding and extrusion molding) of the material and damages the health of related workers. In addition, the formed product also slowly emits some odor during long-term storage or use, which affects the comfort of the end user.
Among various flame retardant systems, brominated flame retardants have relatively large odor, and particularly, pungent odor is more serious when the thermal processing temperature is higher, mainly because the flame retardants are thermally decomposed at high temperature to generate hydrogen bromide gas with pungent odor, which is a flame quencher capable of capturing hydrogen radicals and hydroxyl radicals generated by thermal decomposition in matrix resin, delaying chain decomposition of the matrix resin and playing a role in protecting the resin. On the other hand, the synergistic flame retardant antimony trioxide can accelerate the debromination reaction of the flame retardant under high temperature conditions, and further generate gases with pungent odor. This reaction process is desirably only carried out during combustion and not during thermal processing or as little as possible. The current research on low odor is mainly focused on automotive interior materials, and mainly non-flame retardant polypropylene materials, and engineers and scholars have found various truly effective solutions to control the odor of materials in this field. However, in the field of flame retardant nylon 66, relatively few solutions have been developed for low odor that not only manifests itself in the odor of the injection molding process, but also in the odor of the injection molded article during its placement or use. CN106633840A reduces the pungent odor of the composite material by introducing nano metal oxide with adsorption function, and preferably selects an odorless ester flow modifier to obtain the composite material with low pungent odor. CN103992634A inhibits the release of phosphine by adding iron oxide, thereby reducing the pungent odor of the composite material. CN102558839A adopts microcapsule red phosphorus master batch and modified activated zeolite powder to reduce pungent smell caused by phosphine in the red phosphorus flame-retardant reinforced material. In the prior art, volatile pungent smell is mainly adsorbed by the adsorptive nanoparticles, only short-term effect can be achieved, and when external conditions change, such as high temperature and the like, the smell can still diffuse slowly, so that a solution needs to be found from the root. Based on the phenomenon, some injection products can be continuously baked at high temperature, the odor can be slowly baked out to meet the odor requirement of terminal customers, the production efficiency is low, and the energy consumption is high. However, the PA66 resin belongs to a semi-crystalline polymer, the melting point is about 265 ℃, so the hot processing temperature is usually higher, generally between 270 ℃ and 320 ℃, and particularly after glass fiber is added for reinforcement, high-temperature injection molding is generally adopted for obtaining a better product surface. The higher the hot working temperature is, the more the brominated flame retardant is decomposed, and the more pungent odor gas is generated.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defect and the defect of large pungent odor of the traditional bromine-antimony flame-retardant nylon composite material, and provides a bromine-antimony flame-retardant nylon composite material with low pungent odor.
Still another object of the present invention is to provide a method for preparing a bromine-antimony flame retardant nylon composite material with low pungent odor.
Another object of the present invention is to provide a use of a bromine-antimony flame retardant nylon composite material having a low pungent odor.
The above purpose of the invention is realized by the following technical scheme:
a bromine-antimony flame-retardant nylon composite material with low pungent smell comprises the following components in parts by weight:
wherein the weight average molecular weight Mw of the brominated polystyrene flame retardant is 4000-10000; the flow modifier is hyperbranched polyester resin.
According to the invention, the brominated polystyrene flame retardant with low molecular weight is selected, the flowability is excellent, and meanwhile, the high-efficiency flow modifier is matched, the flow modifier is hyperbranched polyester resin, the hyperbranched polyester resin is a dendritic compound and a dendrimer, so that the internal friction between nylon molecules and the friction between the nylon molecules and processing equipment can be reduced, the flowability of the material is improved, the shear heat generated in the material processing process is reduced, the melt temperature of the composite material is reduced, and the thermal decomposition of the flame retardant is reduced. On the other hand, the high-water-absorptivity odor removing agent is introduced, has a large number of amido bonds and ether bonds, has high water absorptivity, can lose water molecules at a certain temperature, and can release partial water molecules in the extrusion processing process, and the formed high-pressure water vapor carries out micromolecules and other substances generated by decomposing the flame retardant out of a vacuum system, so that irritant odor gas of the composite material is further reduced, and the bromine-antimony flame-retardant nylon composite material with low irritant odor is obtained.
Preferably, the composition comprises the following components in parts by weight:
preferably, the brominated polystyrene flame retardant has a weight average molecular weight Mw of 4000-8000.
Preferably, the hyperbranched polyester resin is a carboxyl-terminated hyperbranched polyester resin.
More preferably, the hyperbranched polyester resin is Hyper C100 and/or CYD-701C.
Preferably, the water absorption rate of the odor removal agent is 6-12%.
Preferably, the odour removal agent is a polyether and polyamide copolymer.
More preferably, the odor removal agent is PELESTAT-6500.
Preferably, the antimony-based synergistic flame retardant is an antimony trioxide synergistic flame retardant.
Preferably, the chopped glass fiber has a length of 1.5-6.0 mm and a diameter of 7-16 μm.
More preferably, the chopped glass fiber has a length of 3.0 to 5.0mm and a diameter of 8 to 12 μm.
Preferably, the chopped glass fiber strands comprise strands of A-, E-, C-, D-, S-, and R-glass fibers having one of a circular, oval, or square cross-sectional shape.
Preferably, the polyamide resin is one or more of polyamide 66, polyamide 6, polyamide 610, polyamide 1010, semi-aromatic polyamide 6T, polyamide 10T and polyamide 66/6T resin.
More preferably, the polyamide resin is polyamide 66.
The polyamide 66 is a polymer with amido bond (-NHCO-) in a main chain obtained by condensation polymerization of diamine and dicarboxylic acid.
Preferably, the lubricant is one or more of stearamides, alcohol stearates, stearates and long-chain saturated linear carboxylates.
Preferably, the odor removal agent is also subjected to a moisture conditioning treatment.
The humidity conditioning treatment comprises the following steps: the odor removing agent is subjected to humidity conditioning treatment in a RH humidity conditioning box with the temperature of 50-85 ℃ and the humidity of 60-95%, the treatment time in the humidity conditioning box is controlled to be 6-24 h, the water absorption rate value is calculated by adopting the weight difference before and after water absorption, and the water absorption rate is controlled to be 6-12%.
The preparation method of the bromine-antimony flame-retardant nylon composite material with low pungent smell comprises the following steps:
the method comprises the steps of weighing and mixing polyamide resin, brominated polystyrene flame retardant, antimony synergistic flame retardant, flow modifier, odor remover and lubricant in proportion to obtain a mixture, adding the mixture and chopped glass fiber respectively, carrying out melt blending, and carrying out stripping, granulating and cooling to obtain the bromine-antimony flame retardant nylon composite material with low pungent odor.
Preferably, mixing in a high-speed mixer for 5-10 min to obtain a mixture, and adding the mixture from a scale 1; chopped glass fibers were added separately via scale 2 from the 5 th barrel of the twin screw extruder.
The invention also protects the application of the bromine-antimony flame-retardant nylon composite material with low pungent smell in preparing automobile interior trims, water pump/water valve parts or household appliance shells.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts brominated polystyrene flame retardant with low molecular weight, which has excellent fluidity and is matched with antimony synergistic flame retardant to achieve better flame retardant effect, and is matched with flow modifier to reduce the friction heat in the thermal processing process of the composite material, reduce the melt temperature of the composite material and reduce the thermal decomposition of the flame retardant, on the other hand, the invention also introduces odor remover with high water absorption to release partial water molecules in the extrusion processing process, and the formed high-pressure water vapor brings out the micromolecules and other substances generated by the decomposition of the flame retardant from a vacuum system to further reduce the pungent odor of the composite material, thereby obtaining the bromine-antimony flame retardant nylon composite material with low pungent odor, greatly improving the problem that the traditional bromine-antimony flame retardant nylon composite material generates a large amount of pungent odor in the thermal processing or long-term storage process, improving the processing environment of factories, the composite material is more environment-friendly, and simultaneously the application scene of the composite material is expanded, so that the composite material can meet the fields with higher requirements on smell, such as automobile interior decoration, water pump/water valve parts, household appliance shells and the like.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the examples in any way. The starting reagents employed in the examples of the present invention are, unless otherwise specified, those that are conventionally purchased.
The starting materials used in the following examples and comparative examples:
polyamide 66 resin: PA66 EPR27, Neuma industries, Inc.
Polyamide 66/6T resin: NPD-652, Invidant, USA.
Brominated polystyrene flame retardant a: weight average molecular weight Mw of 5620, SAYTEX HP-5010PST, Yabao group.
Brominated polystyrene flame retardant B: the weight average molecular weight Mw is 190000-210000, BPS 7010, Shandongtian chemical company Limited.
Antimony trioxide synergistic flame retardant: S-12N, commercially available.
Chopped glass fiber: protofilament E glass fiber with length of 4.5mm, diameter of round glass fiber of 11 microns, ECS11-11-4.5-560A, and boulder group.
Flow modifier a: hyperbranched polyester resin, Hyper C100, Wuhan hyperbranched resins science and technology Limited.
Flow modifier B: hyperbranched polyester resin, CYD-701C, Waishaham molecular New materials, Inc.
Flow modifier C: hyperbranched polyester resin, CYD-701B, Waisha molecular New materials Co.
Odor removing agent a: PELESTAT-6500, Sanyo chemical Co., Japan, was subjected to the following humidity conditioning treatments: carrying out moisture absorption treatment on PELESTAT-6500 in a humidity adjusting box with the temperature of 85 ℃ and the humidity of 85 percent RH for 6h, calculating the water absorption rate value through the weight difference before and after moisture absorption, and controlling the water absorption rate to be 6 percent.
An odor removing agent B: PELESTAT-6500, Sanyo chemical Co., Japan, was subjected to the following humidity conditioning treatments: carrying out moisture absorption treatment on PELESTAT-6500 in a humidity adjusting box with the temperature of 85 ℃ and the humidity of 85 percent RH for 24 hours, calculating the water absorption rate value through the weight difference before and after moisture absorption, and controlling the water absorption rate to be 12 percent.
Odor removing agent C: PELESTAT-6500, Sanyo chemical Co., Japan, was subjected to the following humidity conditioning treatments: carrying out moisture absorption treatment on PELESTAT-6500 in a humidity adjusting box with the temperature of 85 ℃ and the humidity of 85 percent RH for 2h, calculating the water absorption rate value through the weight difference before and after moisture absorption, and controlling the water absorption rate to be 3 percent.
Lubricant: stearate esters, TR044W, Struktol.
Examples 1 to 11 and comparative examples 1 to 7
A low pungent odor bromine-antimony flame retardant nylon composite comprising the following components in parts by weight as in tables 1 and 2:
TABLE 1 Components and parts by weight thereof for the examples
TABLE 2 Components in respective proportions and parts by weight thereof
The preparation method of the bromine-antimony flame-retardant nylon composite material with low pungent smell comprises the following steps:
preparing a mixture: weighing PA resin, a flame retardant, an antimony trioxide synergistic flame retardant, a flow modifier, a moisture-absorbed odor removing agent and a lubricant in proportion, putting the materials into a high-speed mixer, mixing for 5-10 min to obtain a mixture, and adding the mixture from a scale 1; adding the chopped glass fibers through a metering scale 2 independently, and adding the chopped glass fibers from a section 5 screw barrel of a double-screw extruder;
and (3) extruding and granulating: the length-diameter ratio of 40: 1, the temperature settings of the first zone to the ten zones of the extruder are respectively as follows: 80 deg.C, 270 deg.C, 260 deg.C, 250 deg.C, 240 deg.C, 270 deg.C; the rotating speed of the main machine is set to 400rpm, the materials are weighed and fed, then are subjected to twin-screw melt blending, strip discharging, grain cutting, cooling and other processes, and the bromine-antimony flame-retardant nylon composite material is prepared.
Performance testing
1. Test method
(1) Composite odor evaluation method 1: the method is carried out by referring to a popular automobile interior decoration odor testing method PV3900-2019, the testing judgment standard is classified into 1-6 grades, and meanwhile, the situation between the two judgment grades can occur: grade 1, no odor; grade 2, odorous, but non-interfering odor; grade 3, obvious smell, but no interfering smell; class 4, interfering odor; grade 5, strong interference smell; grade 6, unbearable odor, graded by professional olfactory officers, and averaged after grading by 5 olfactory officers for each group of samples.
Composite odor evaluation method 2: and (3) taking the square plate with the injection size of 100 × 3mm out of the die cavity, immediately putting the square plate into a closed glassware in which a hydrogen bromide gas concentration tester (MS500 handheld hydrogen bromide gas detector) is placed in advance, standing for 2 hours, reading the numerical value on the tester, and taking an average value after each group of samples are tested for 5 points.
(2) Vertical combustion experiment: according to the requirements of UL94-2013 standard, the injection molding size is (125mm multiplied by 13mm multiplied by 0.8mm) standard combustion sample bars, the test is carried out according to UL94-2013 standard, the flame is applied for the first time for 10s, the after flame time t1 is recorded, the flame time applied for the second time for 10s, the after flame time t2 is recorded, and the after flame time t3 is recorded. The combustion rating criteria are given in Table 3.
TABLE 3 Combustion rating criteria
| Judging conditions | Class V-0 | Class V-1 | Class V-2 |
| After flame time for each individual sample (t1 and t2) | ≤10s | ≤30s | ≤30s |
| Total after flame time tf for all test samples (t1+ t2) | ≤50s | ≤250s | ≤250s |
| After flame and burn time for each individual sample (t2+ t3) | ≤30s | ≤60s | ≤60s |
| Whether burn and support frame | Is free of | Is free of | Is free of |
| Whether burning particles or droppings ignite bedding absorbent cotton | Is free of | Is free of | Is provided with |
(3) Extruder melt temperature test: the melt temperature in the extrusion process is tested by adopting a handheld FLUKE infrared thermal imager, the polymer melt is shaped and stripped through a neck ring mold after being mixed in the extruder, and the thermal imager monitors the temperature of the material strip in the middle position of the neck ring mold and records the temperature as the melt temperature.
2. Test results
TABLE 4 results of Performance test of each example and comparative example
As can be seen from comparative examples 1, 2 and 3 in Table 4, the traditional bromine-antimony flame-retardant composite material has good flame retardant performance, but has heavy pungent smell, the smell rating is above grade 5, the content of hydrogen bromide gas released by an injection molding sample is also high, and particularly when the content of chopped glass fibers is low, a V-0 flame retardant rating is obtained, the addition amount of a flame retardant is high, the pungent smell is heavier, and the hydrogen bromide gas concentration in the comparative example 1 reaches 116 ppm. Comparative example 4 after the brominated polystyrene flame retardant with high molecular weight is adopted, the melt temperature reaches 309 ℃ due to poor flowability of the composite material and strong shearing force in the processing process, at the moment, the decomposition of the flame retardant is more serious, the concentration of the generated hydrogen bromide gas is higher, and the odor rating is 5.9 grade level. Comparative example 5 the addition of the flow modifier reduced the melt temperature during processing, reduced pungent odor, reduced hydrogen bromide gas content, and improved odor evaluation, but the odor evaluation was still worse than the examples without the addition of the odor removal agent. Comparative example 6 there was some reduction in hydrogen bromide gas content after addition of the odor removal agent, but the odor evaluation was still inferior to that of the examples since no flow modifier was present, while the composite only achieved a V-2 flame retardant rating without the addition of antimony trioxide.
It can be seen from the examples in table 4 that the use of a brominated polystyrene flame retardant with high flowability in combination with a hyperbranched polyester flow modifier can greatly reduce the shear stress during the thermal processing of the composite material, reduce the melt temperature, and reduce the generation of irritating gases such as hydrogen bromide. On the other hand, by introducing the odor removing agent, the small molecular substances with pungent odor generated in the thermal processing process are further discharged through a negative pressure exhaust system (vacuum exhaust port) of the extruder, so that the pungent odor is reduced. The odor grade of each example can reach a level of 3.2-4.0, and the content of hydrogen bromide gas is obviously reduced, such as only 18ppm in example 4 and only 20ppm in example 5.
In conclusion, the invention greatly improves the problem of high pungent smell in the thermal processing or long-term storage process of the traditional bromine-antimony flame-retardant nylon composite material by introducing the high-fluidity low-molecular-weight brominated polystyrene flame retardant, the flow modifier and the smell remover, improves the processing environment of factories, is more environment-friendly, expands the application scene of the composite material and meets the fields with higher requirements on smell, such as automobile interiors, water pump/water valve parts, household appliance shells and the like.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The bromine-antimony flame-retardant nylon composite material with low pungent smell is characterized by comprising the following components in parts by weight:
wherein the weight average molecular weight Mw of the brominated polystyrene flame retardant is 4000-10000; the flow modifier is hyperbranched polyester resin.
2. The low pungent odor bromine-antimony fire retardant nylon composite of claim 1 comprising the following components in parts by weight:
3. the low pungent odor bromine-antimony fire retardant nylon composite material of claim 1, wherein the brominated polystyrene fire retardant has a weight average molecular weight Mw of 4000-8000.
4. The low pungent odor bromine-antimony fire retardant nylon composite of claim 1, wherein the hyperbranched polyester resin is a carboxyl-terminated hyperbranched polyester resin.
5. The low pungent odor bromine-antimony fire retardant nylon composite of claim 1, wherein the water absorption of the odor removal agent is 6% to 12%.
6. The low pungent odor bromine-antimony fire retardant nylon composite of claim 1 wherein the odor removing agent is a polyether and polyamide copolymer.
7. The low pungent odor bromine-antimony fire retardant nylon composite material of claim 1, wherein the polyamide resin is one or more of polyamide 66, polyamide 6, polyamide 610, polyamide 1010 and semi-aromatic polyamide 6T, polyamide 10T, polyamide 66/6T resin.
8. The low pungent odor bromine-antimony fire retardant nylon composite of claim 1, wherein the lubricant is one or more of stearamides, alcohol stearates, long chain saturated linear carboxylates.
9. The preparation method of the low-pungent-smell bromine-antimony flame-retardant nylon composite material of any one of claims 1 to 8 is characterized by comprising the following steps:
the method comprises the steps of weighing and mixing polyamide resin, brominated polystyrene flame retardant, antimony synergistic flame retardant, flow modifier, odor remover and lubricant in proportion to obtain a mixture, adding the mixture and chopped glass fiber respectively, carrying out melt blending, and carrying out stripping, granulating and cooling to obtain the bromine-antimony flame retardant nylon composite material with low pungent odor.
10. The use of the low pungent odor bromine-antimony fire retardant nylon composite material of any one of claims 1 to 8 in the preparation of automotive interiors, water pump/water valve parts or household appliance housings.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116102881A (en) * | 2022-12-15 | 2023-05-12 | 金发科技股份有限公司 | Brominated flame-retardant polyamide composite material and preparation method and application thereof |
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