CN113956654A - High-temperature-resistant nylon master batch and preparation method thereof - Google Patents
High-temperature-resistant nylon master batch and preparation method thereof Download PDFInfo
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- CN113956654A CN113956654A CN202111233056.8A CN202111233056A CN113956654A CN 113956654 A CN113956654 A CN 113956654A CN 202111233056 A CN202111233056 A CN 202111233056A CN 113956654 A CN113956654 A CN 113956654A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/526—Cleaning with brushes or scrapers with scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- 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
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
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- 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
- C08J2477/06—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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K3/2279—Oxides; Hydroxides of metals of antimony
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- Polymers & Plastics (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The high-temperature-resistant nylon master batch is prepared from the following components in parts by weight: 60-90 parts of nylon resin, 4-8 parts of composite flame retardant, 1-3 parts of glass fiber, 1-2 parts of lubricant, 0.5-1 part of coupling agent and 2-4 parts of antioxidant; the composite flame retardant comprises: brominated polystyrene, antimony trioxide and expandable graphite. The high-temperature-resistant nylon master batch disclosed by the invention adopts a composite flame retardant, and the prepared nylon master batch has good high-temperature resistance and good stability; in addition, the preparation method of the high-temperature-resistant nylon master batch utilizes the special screening device to screen the master batch, so that the screening is comprehensive and the efficiency is high.
Description
Technical Field
The invention belongs to the technical field of nylon master batch preparation, and particularly relates to a high-temperature-resistant nylon master batch and a preparation method thereof.
Background
Nylon, a term for polyamide fiber; polyamide is a general term for polymers containing repeat structural units of amide groups in the main chain of macromolecules; the yield of nylon is the first in engineering plastics, so that the nylon becomes an indispensable structural material in various industries, the product quality is excellent and stable, the comprehensive technology of nylon materials is applied to the manufacturing of the special nylon color master batch, and on the premise of not influencing the original performance of the product, different series of nylon materials of the color master batch are combined together according to a strict formula, so that various required performances such as high-flame retardance, easy demoulding, insulation resistance, reinforcement and toughening and the like are added to the special nylon color master batch; the existing high-temperature resistant nylon master batch is usually added with a single flame retardant to improve the high-temperature resistance, and the high-temperature resistant nylon master batch has limited high-temperature resistance and poor stability.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a high-temperature-resistant nylon master batch and a preparation method thereof, and the specific technical scheme is as follows:
the high-temperature-resistant nylon master batch is prepared from the following components in parts by weight: 60-90 parts of nylon resin, 4-8 parts of composite flame retardant, 1-3 parts of glass fiber, 1-2 parts of lubricant, 0.5-1 part of coupling agent and 2-4 parts of antioxidant; the composite flame retardant comprises: brominated polystyrene, antimony trioxide and expandable graphite.
Further, the composite flame retardant comprises, by weight, 2 parts of brominated polystyrene, 2 parts of antimony trioxide and 3 parts of expandable graphite.
The preparation method of the high-temperature resistant nylon master batch comprises the following steps:
adding the raw materials into a stirrer according to the weight parts of the components, and stirring to obtain a mixture;
putting the mixture into an extruder, and extruding the mixture into a nylon strip;
and cooling and cutting the extruded nylon strip, and screening by using a screening device to obtain the required nylon master batch.
Further, the screening device comprises a shell, a discharging hopper is arranged at the top end inside the shell, and the bottom end of the discharging hopper is communicated with the protective cover; the protective cover is fixed inside the shell, and a first screen is arranged at the bottom end of the protective cover; the bottom end of the first screen is rotatably connected with a discharging barrel, and a rotating piece is fixed on the inner side of the first screen; the rotating piece is used for driving the first screen to rotate at the top end of the blanking barrel; a second screen is fixed on the side portion of the discharging barrel, and a discharging plate is fixed on the side portion of the second screen.
Further, the first screen adopts a hollow hemispherical structure, and a screening cavity is formed between the first screen and the protective cover; and a scraper is fixed at the bottom end of the protective cover.
Further, the diameter of the mesh of the second screen is the same as that of the first screen, and the second screen adopts an inclined structure.
Further, the rotating member comprises a rotating shaft, a first motor and a fixing rod, the fixing rod is fixed on the inner side of the shell, and the first motor is fixed inside the fixing rod; the end of the first motor is connected with a rotating shaft, and the other end of the rotating shaft is connected with the first screen.
The vibration part comprises a vibration roller, a linkage rod, a transmission rod, a rotary table and a second motor, wherein the second motor is arranged at the top end of the fixed rod, and the end part of the second motor is connected with the rotary table; the edge of the turntable is rotatably connected with a transmission rod, and the end part of the transmission rod is rotatably connected with a linkage rod; the end part of the linkage rod is rotatably connected with the shell, and a vibrating roller is fixed at the end part of the linkage rod.
The invention has the beneficial effects that: the high-temperature-resistant nylon master batch disclosed by the invention adopts a composite flame retardant, and the prepared nylon master batch has good high-temperature resistance and good stability; in addition, the preparation method of the high-temperature-resistant nylon master batch utilizes the special screening device to screen the master batch, so that the screening is comprehensive and the efficiency is high.
Drawings
Figure 1 shows a schematic view of the construction of the screening device of the present invention;
FIG. 2 shows a schematic of the construction of the first screen, second screen and discharge plate of the present invention;
FIG. 3 shows an enlarged schematic view of FIG. 1 at A;
shown in the figure: 1. the automatic feeding device comprises a shell, 11, a feed opening, 2, a feeding hopper, 3, a protective cover, 31, a scraper, 32, a screening cavity, 4, a first screen, 5, a second screen, 6, a rotating part, 61, a rotating shaft, 62, a first motor, 63, a fixing rod, 7, a discharging plate, 8, a feeding barrel, 9, a vibrating part, 91, a vibrating roller, 92, a linkage rod, 93, a transmission rod, 94, a rotary disc, 95 and a second motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
The high-temperature-resistant nylon master batch is prepared from the following components in parts by weight: 60-90 parts of nylon resin, 4-8 parts of composite flame retardant, 1-3 parts of glass fiber, 1-2 parts of lubricant, 0.5-1 part of coupling agent and 2-4 parts of antioxidant; preferably, 85 parts of nylon resin, 7 parts of composite flame retardant, 3 parts of glass fiber, 2 parts of lubricant, 1 part of coupling agent and 2 parts of antioxidant; wherein the nylon resin is preferably poly (ethylene terephthalamide), and the lubricant is preferably ethylene bis stearamide; the coupling agent is preferably a silane coupling agent; the antioxidant is preferably phosphite ester; the composite flame retardant comprises: brominated polystyrene, antimony trioxide, expandable graphite; wherein the composite flame retardant comprises, by weight, 2 parts of brominated polystyrene, 2 parts of antimony trioxide and 3 parts of expandable graphite; the composite flame retardant can effectively improve the high-temperature resistance and has stable performance.
The preparation method of the high-temperature resistant nylon master batch comprises the following steps:
the method comprises the following steps: adding the raw materials into a stirrer according to the weight parts of the components, and stirring to obtain a mixture; concretely, the raw materials are prepared according to the weight parts, such as 85 parts of nylon resin, 7 parts of composite flame retardant, 3 parts of glass fiber, 2 parts of lubricant, 1 part of coupling agent and 2 parts of antioxidant; wherein the composite flame retardant is added into a stirrer according to 2 parts of brominated polystyrene, 2 parts of antimony trioxide and 3 parts of expandable graphite and stirred for 40-60 minutes;
step two: putting the mixture into an extruder, and extruding the mixture into a nylon strip; specifically, the mixture is placed in an extruder, the temperature of the extruder is set to be 180-250 ℃, and a nylon strip is formed by extrusion;
step three: cooling and cutting the extruded nylon strip, and screening by using a screening device to obtain the required nylon master batch; specifically, the extruded nylon strip is cooled by water or air, cut into particles, and screened by a screening device to obtain nylon master batches with required sizes.
As a preferable scheme of the present invention, the screening device is as shown in fig. 1-3, the screening device includes a housing 1, a discharge hopper 2 is arranged at the top end inside the housing 1, the discharge hopper 2 is of a funnel structure, and the discharge hopper 2 is located at the center inside the housing 1; the bottom end of the blanking hopper 1 is communicated with a protective cover 3; the section of the protective cover 3 is of an arc-shaped structure; the protective cover 3 is fixed inside the shell 1, and a first screen 4 is arranged at the bottom end of the protective cover 3; the bottom end of the first screen 4 is rotatably connected with a discharging barrel 8, and the discharging barrel 8 adopts a cylindrical structure with an opening at the top end and the bottom end; a rotating piece 6 is fixed on the inner side of the first screen 4; the rotating piece 6 is used for driving the first screen 4 to rotate at the top end of the lower charging barrel 8; a second screen 5 is fixed on the side part of the feeding barrel 8, a discharge plate 7 is fixed on the side part of the second screen 5, and the discharge plate 7 is used for discharging nylon master batches left on the screen after screening; the bottom end of the shell 1 is provided with a feed opening 11, and the feed opening 11 is used for discharging the nylon master batch passing through the screen; the nylon master batches are sieved for the first time by adopting a rotating first screen, and then sieved for the second time by utilizing a second screen; screening is comprehensive, and is efficient, easy operation.
As a preferred scheme of the present invention, the first screen 4 has a hollow hemispherical structure, and has a large screening area; and a screening cavity 32 is formed between the first screen 4 and the protective cover 3; a scraping plate 31 is fixed at the bottom end of the protective cover 3; when the first screen 4 rotates, the scraper 31 scrapes the surface of the first screen 4, so that master batch accumulation is avoided.
In a preferred embodiment of the present invention, the second screen 5 has the same mesh diameter as the first screen 4, and the second screen 5 has an inclined structure.
As a preferable aspect of the present invention, the rotating member 6 includes a rotating shaft 61, a first motor 62, and a fixing rod 63, the fixing rod 63 is fixed to the inner side of the housing 1, and the first motor 62 is fixed inside the fixing rod 63; the end part of the first motor 62 is connected with a rotating shaft 61, and the other end of the rotating shaft 61 is connected with the first screen 4; the first screen 4 is rotated by turning on the first motor 62.
As a preferable scheme of the present invention, the present invention further comprises a vibrating member 9, wherein the vibrating member 9 comprises a vibrating roller 91, a linkage rod 92, a transmission rod 93, a turntable 94, and a second motor 95, the second motor 95 is mounted at the top end of the fixing rod 63, and the end of the second motor 95 is connected to the turntable 94; the edge of the turntable 94 is rotatably connected with a transmission rod 93, and the end part of the transmission rod 93 is rotatably connected with a linkage rod 92; the end part of the linkage rod 92 is rotatably connected with the shell 1, and a vibrating roller 91 is fixed at the end part of the linkage rod 92; and when second motor 95 rotated, it was rotatory to drive carousel 94, and carousel 94 is rotatory can drive gangbar 92 through transfer link 93, vibration roller 91 is at casing 1 internal rotation, and then realizes utilizing vibration roller 91 to pat second screen cloth 5, strengthens the screening effect.
When the screening device is used, firstly, the cut master batches are placed in the blanking hopper 2, and the nylon master batches descend into the screening cavity 32 under the action of gravity; meanwhile, the first motor 62 is turned on, and the rotating shaft 61 is driven to rotate by the first motor 62; when the rotating shaft 61 rotates, the first screen 4 is driven to rotate, so that the nylon master batch entering the screening cavity 32 is screened in the rotation of the screen; allowing a part of the master batches to pass through the first screen 4, allowing the nylon master batches which cannot pass through the first screen 4 to fall onto the second screen 5 under the action of gravity, and sieving again to obtain a discharge plate 7 for discharging the nylon master batches left on the screen after sieving; the feed opening 11 is used for discharging the nylon master batch passing through the screen; when screening, the second motor 95 is turned on, and when the second motor 95 runs, the rotary disc 94 is driven to rotate, and the rotary disc 94 rotates to drive the linkage rod 92 and the vibrating roller 91 to rotate in the shell 1 through the transmission rod 93, so that the vibrating roller 91 is utilized to flap the second screen 5.
The high-temperature-resistant nylon master batch disclosed by the invention adopts a composite flame retardant, and the prepared nylon master batch has good high-temperature resistance and good stability; in addition, the preparation method of the high-temperature-resistant nylon master batch utilizes the special screening device to screen the master batch, so that the screening is comprehensive and the efficiency is high.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The high-temperature resistant nylon master batch is characterized in that: the paint is prepared from the following components in parts by weight:
60-90 parts of nylon resin, 4-8 parts of composite flame retardant, 1-3 parts of glass fiber, 1-2 parts of lubricant, 0.5-1 part of coupling agent and 2-4 parts of antioxidant; the composite flame retardant comprises: brominated polystyrene, antimony trioxide and expandable graphite.
2. The high temperature resistant nylon masterbatch of claim 1, characterized in that: the composite flame retardant comprises, by weight, 2 parts of brominated polystyrene, 2 parts of antimony trioxide and 3 parts of expandable graphite.
3. The preparation method of the high-temperature resistant nylon master batch is characterized by comprising the following steps: the process for preparing the high temperature resistant nylon masterbatch of any one of claims 1-2, comprising:
adding the raw materials into a stirrer according to the weight parts of the components, and stirring to obtain a mixture;
putting the mixture into an extruder, and extruding the mixture into a nylon strip;
and cooling and cutting the extruded nylon strip, and screening by using a screening device to obtain the required nylon master batch.
4. The preparation method of the high temperature resistant nylon masterbatch according to claim 3, characterized in that: the screening device comprises a shell, a discharging hopper is arranged at the top end inside the shell, and the bottom end of the discharging hopper is communicated with a protective cover; the protective cover is fixed inside the shell, and a first screen is arranged at the bottom end of the protective cover; the bottom end of the first screen is rotatably connected with a discharging barrel, and a rotating piece is fixed on the inner side of the first screen; the rotating piece is used for driving the first screen to rotate at the top end of the blanking barrel; a second screen is fixed on the side portion of the discharging barrel, and a discharging plate is fixed on the side portion of the second screen.
5. The preparation method of the high temperature resistant nylon masterbatch according to claim 4, characterized in that: the first screen adopts a hollow hemispherical structure, and a screening cavity is formed between the first screen and the protective cover; and a scraper is fixed at the bottom end of the protective cover.
6. The preparation method of the high temperature resistant nylon masterbatch according to claim 5, characterized in that: the second screen is the same as the first screen in mesh diameter, and the second screen adopts the structure of slope.
7. The preparation method of the high temperature resistant nylon masterbatch according to claim 6, characterized in that: the rotating part comprises a rotating shaft, a first motor and a fixed rod, the fixed rod is fixed on the inner side of the shell, and the first motor is fixed inside the fixed rod; the end of the first motor is connected with a rotating shaft, and the other end of the rotating shaft is connected with the first screen.
8. The preparation method of the high temperature resistant nylon masterbatch according to claim 7, characterized in that: the vibration part comprises a vibration roller, a linkage rod, a transmission rod, a rotary table and a second motor, wherein the second motor is arranged at the top end of the fixed rod, and the end part of the second motor is connected with the rotary table; the edge of the turntable is rotatably connected with a transmission rod, and the end part of the transmission rod is rotatably connected with a linkage rod; the end part of the linkage rod is rotatably connected with the shell, and a vibrating roller is fixed at the end part of the linkage rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233056.8A CN113956654A (en) | 2021-10-22 | 2021-10-22 | High-temperature-resistant nylon master batch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233056.8A CN113956654A (en) | 2021-10-22 | 2021-10-22 | High-temperature-resistant nylon master batch and preparation method thereof |
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| CN113956654A true CN113956654A (en) | 2022-01-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602246A (en) * | 2016-03-04 | 2016-05-25 | 广西华锑科技有限公司 | Antimony-based compound flame-retardant masterbatch for nylon 66 and preparation method of antimony-based compound flame-retardant masterbatch |
| CN106280414A (en) * | 2016-08-04 | 2017-01-04 | 北京工商大学 | A kind of nylon base heat-conductive composite material and preparation method thereof |
| CN109705571A (en) * | 2018-12-24 | 2019-05-03 | 金旸（厦门）新材料科技有限公司 | A kind of low-density, low smell bromine system flame-retardant reinforced nylon 66 and preparation method thereof |
| CN211989670U (en) * | 2020-03-25 | 2020-11-24 | 青岛恒利得石墨有限公司 | Graphite grading plant |
| CN112718453A (en) * | 2019-10-29 | 2021-04-30 | 湖南双环纤维成型设备有限公司 | Built-in mechanical vibration screening device of harvester |
-
2021
- 2021-10-22 CN CN202111233056.8A patent/CN113956654A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602246A (en) * | 2016-03-04 | 2016-05-25 | 广西华锑科技有限公司 | Antimony-based compound flame-retardant masterbatch for nylon 66 and preparation method of antimony-based compound flame-retardant masterbatch |
| CN106280414A (en) * | 2016-08-04 | 2017-01-04 | 北京工商大学 | A kind of nylon base heat-conductive composite material and preparation method thereof |
| CN109705571A (en) * | 2018-12-24 | 2019-05-03 | 金旸（厦门）新材料科技有限公司 | A kind of low-density, low smell bromine system flame-retardant reinforced nylon 66 and preparation method thereof |
| CN112718453A (en) * | 2019-10-29 | 2021-04-30 | 湖南双环纤维成型设备有限公司 | Built-in mechanical vibration screening device of harvester |
| CN211989670U (en) * | 2020-03-25 | 2020-11-24 | 青岛恒利得石墨有限公司 | Graphite grading plant |
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