CN116330522A - Flame-retardant plastic master batch and preparation method thereof - Google Patents

Flame-retardant plastic master batch and preparation method thereof Download PDF

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Publication number
CN116330522A
CN116330522A CN202310393518.5A CN202310393518A CN116330522A CN 116330522 A CN116330522 A CN 116330522A CN 202310393518 A CN202310393518 A CN 202310393518A CN 116330522 A CN116330522 A CN 116330522A
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CN
China
Prior art keywords
master batch
fixedly connected
flame
plastic master
retardant plastic
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Pending
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CN202310393518.5A
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Chinese (zh)
Inventor
孙艳丽
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Individual
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Individual
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Priority to CN202310393518.5A priority Critical patent/CN116330522A/en
Publication of CN116330522A publication Critical patent/CN116330522A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0023—Combinations of extrusion moulding with other shaping operations combined with printing or marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/287—Raw material pre-treatment while feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to the technical field of plastic master batches, in particular to a flame-retardant plastic master batch and a preparation method thereof. The preparation method comprises the following steps: s1: heating and melting raw materials, stirring and mixing the raw materials, and adding the mixed raw materials into an extrusion device; s2: preparing the raw materials into strip-shaped semi-finished products through an extrusion device; s3: stamping marks on the strip-shaped semi-finished product to prepare a semi-finished product material; s4: cooling the semi-finished material; s5: cutting off the cooled semi-finished product material to obtain the flame-retardant plastic master batch. The extrusion device comprises a support, a shell is fixedly connected to the support, a decompression chamber is fixedly connected to the right side of the shell, and an extrusion block is fixedly connected to the right side of the decompression chamber. The flame-retardant plastic master batch comprises the following raw materials in parts by weight: 4 parts of halogen-free auxiliary flame retardant, 1 part of lubricant, 30 parts of glass fiber, 15 parts of red phosphorus flame-retardant master batch and 45 parts of polyamide.

Description

Flame-retardant plastic master batch and preparation method thereof
Technical Field
The invention relates to the technical field of plastic master batches, in particular to a flame-retardant plastic master batch and a preparation method thereof.
Background
With the progress of technology and improvement of living standard, the position of polymer materials, especially synthetic polymers, in people's life is more and more important. However, most organic polymer materials have the characteristic of inflammability in air to different degrees, and in order to realize the application of the organic polymer materials in various industries, the flame retardation modification of the organic polymer materials is a new subject. The ideal flame-retardant modification method is to add a flame retardant or a flame-retardant master batch to improve the fireproof performance of the plastic. The plastic master batch is a concentrated body prepared by carrying the plastic auxiliary agent in the resin in an ultra-constant amount, and the plastic auxiliary agent is not needed to be added when the plastic product is manufactured, and only the master batch with the ultra-constant amount is needed to be added in proportion.
At present, the flame-retardant plastic master batch cannot discharge bubbles in the plastic during extrusion, so that the produced master batch contains irregular air holes, pits and other defects, impurities such as dust can be adsorbed in the irregular defects and are difficult to clean during storage, and the modified plastic added with the master batch contains impurities, so that the performance of the plastic is influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a flame-retardant plastic master batch and a preparation method thereof, and the flame-retardant plastic master batch has the beneficial effects of preventing air holes from occurring in the prepared master batch.
A preparation method of flame retardant plastic master batch comprises the following steps:
s1: heating and melting raw materials, stirring and mixing the raw materials, and adding the mixed raw materials into an extrusion device;
s2: preparing the raw materials into strip-shaped semi-finished products through an extrusion device;
s3: stamping marks on the strip-shaped semi-finished product to prepare a semi-finished product material;
s4: cooling the semi-finished material;
s5: cutting off the cooled semi-finished product material to obtain the flame-retardant plastic master batch.
The heating temperature in the step S1 is 275-280 ℃.
The depth of the embossing mark in the step S3 is 0.5mm-1mm.
And in the step S5, the length of the master batch after cutting is 10mm-15mm.
The extrusion device comprises a support, a shell is fixedly connected to the support, a decompression chamber is fixedly connected to the right side of the shell, and an extrusion block is fixedly connected to the right side of the decompression chamber.
The flame-retardant plastic master batch comprises the following raw materials in parts by weight: 4 parts of halogen-free auxiliary flame retardant, 1 part of lubricant, 30 parts of glass fiber, 15 parts of red phosphorus flame retardant master batch and 45 parts of polyamide.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a process flow diagram of a method for preparing a flame retardant plastic masterbatch in the invention;
FIG. 2 is a schematic view of an extrusion apparatus according to the present invention;
FIG. 3 is a cross-sectional view of an extrusion apparatus of the present invention;
FIG. 4 is an enlarged cross-sectional view of the extrusion apparatus of the present invention;
FIG. 5 is a schematic view of the structure of the bracket according to the present invention;
FIG. 6 is a schematic view of the structure of the housing and decompression chamber according to the present invention;
FIG. 7 is a schematic view of a filter plate according to the present invention;
FIG. 8 is a schematic view showing the structure of the decompression chamber and the extrusion block according to the present invention;
FIG. 9 is a schematic view showing the structure of the decompression chamber and the partition plate in the present invention;
FIG. 10 is a cross-sectional view of a decompression chamber according to the present invention;
FIG. 11 is a schematic view showing the structure of the decompression chamber according to the present invention;
fig. 12 is a schematic structural view of a valve plate in the present invention.
In the figure: a bracket 101; a hydraulic cylinder 102; a link 103; a top plate 104; a circular groove 105;
a housing 201; a filter plate 202; a baffle 203;
a decompression chamber 301; extrusion block 302; a bottom plate 303; a chute 304; a valve plate 305; a groove 306; a gas valve 307; an exhaust groove 308; a rotation shaft 309; a partition 310; a deflector 311; square holes 312; a briquette 313; a platen 314.
Detailed Description
A preparation method of flame retardant plastic master batch comprises the following steps:
s1: heating and melting raw materials, stirring and mixing the raw materials, and adding the mixed raw materials into an extrusion device;
s2: preparing the raw materials into strip-shaped semi-finished products through an extrusion device;
s3: stamping marks on the strip-shaped semi-finished product to prepare a semi-finished product material;
s4: cooling the semi-finished material;
s5: cutting off the cooled semi-finished product material to obtain the flame-retardant plastic master batch.
The heating temperature in the step S1 is 275 ℃.
The depth of the stamping mark in the step S3 is 1mm; the flame-retardant master batch can be prevented from being indistinguishable after being mixed with other master batches by stamping marks on the flame-retardant master batch, so that production errors caused by adding wrong master batches in the preparation of flame-retardant plastics are prevented; the stamping depth of 1mm can ensure that the deposition of dust and impurities on the mark can be reduced when the mark is identified, and the mark can be simply washed when in use.
And in the step S5, the length of the master batch after cutting is 15mm.
The master batch with the length of 15mm can provide enough space for marking and embossing, and further can keep the integrity of the mark after cutting.
This example can achieve the effect of preventing the occurrence of air holes inside the prepared master batch, as shown in fig. 1 to 6 and 8 to 11.
Because the extrusion device in the preparation method of the flame-retardant plastic master batch comprises the bracket 101, the bracket 101 is fixedly connected with the shell 201, the right side of the shell 201 is fixedly connected with the decompression chamber 301, and the right side of the decompression chamber 301 is fixedly connected with the extrusion block 302; adding the melted and mixed raw materials into the shell 201, and then moving the raw materials to the right into the decompression chamber 301, wherein the pressure in the decompression chamber 301 is reduced at the moment, so that the gas in the raw materials is sucked out, and the effect of separating the gas in the raw materials is realized; and then the raw materials are extruded into a strip shape through the extrusion block 302, so that the extruded strip-shaped semi-finished product is prevented from containing air holes, and the flame-retardant plastic master batch prepared after the strip-shaped semi-finished product is cooled does not contain defects such as the air holes, and the effect of preventing the air holes from occurring in the prepared master batch is realized.
This example can achieve the effect of improving the quality of the flame retardant plastic master batch, as shown in fig. 1-7.
The right end of the shell 201 is fixedly connected with a filter plate 202 in the preparation method of the flame retardant plastic master batch; the filter plate 202 is provided with a plurality of tiny holes, so that impurities and caking substances in raw materials are prevented from passing through the filter plate 202, the quality of the prepared flame-retardant plastic master batch is further prevented from being influenced by the impurities, and the effect of improving the quality of the flame-retardant plastic master batch is further realized.
This example can achieve the effect of moving the raw material to the right to the decompression chamber 301 as shown in fig. 1 to 12.
In the preparation method of the flame-retardant plastic master batch, the right end of the filter plate 202 is fixedly connected with the baffle 203, the upper part of the decompression chamber 301 is provided with the chute 304, and the valve plate 305 is connected in a sliding manner in the chute 304; the baffle 203 separates the shell 201 from the chute 304, and slides the valve plate 305 upwards, so that the volume of the lower part of the chute 304 is increased, the pressure of the lower part of the chute 304 is reduced, the pressure in the decompression chamber 301 is reduced, and the effect of reducing the pressure in the decompression chamber 301 is realized; when the pressure of the decompression chamber 301 is reduced, an attractive force is generated for the raw material in the housing 201, and the raw material is sucked into the decompression chamber 301 from the housing 201, and the raw material is moved rightward to the decompression chamber 301.
This example can achieve the effect of exhausting the gas from the feedstock, as shown in fig. 1-12.
In the preparation method of the flame-retardant plastic master batch, a groove 306 is formed in the bottom of the valve plate 305, an air valve 307 is fixedly connected to the upper side of the valve plate 305, the position of the air valve 307 is above the groove 306, and a plurality of exhaust grooves 308 are formed in the upper side of the sliding groove 304; because the viscosity of the raw materials is high, the upward moving speed of the valve plate 305 is higher than the speed of the raw materials entering the decompression chamber 301, the gap between the valve plate 305 and the raw materials in the decompression chamber 301 is increased, the gas in the raw materials is sucked out, and the effect of exhausting the gas in the raw materials is realized; the sucked gas gathers below the valve plate 305, and because the mass of the gas is less than that of the raw materials, the gas gathers on the upper portion of the groove 306, the groove 306 below the valve plate 305 can prevent the raw materials from being discharged while discharging air, at this time, the valve plate 305 is moved downwards, the gas is discharged to the upper side of the valve plate 305 through the gas valve 307 above the groove 306, and then the gas is discharged through the gas discharge groove 308, and then the effect of discharging the gas in the raw materials is realized.
This example achieves the effect of increasing the ability to expel air from the feedstock, as shown in figures 1-12.
In the preparation method of the flame-retardant plastic master batch, the left side of the sliding chute 304 is slidingly connected with the pressing block 313, the inside of the decompression chamber 301 is fixedly connected with the baffle 310, and the position of the baffle 310 is on the right side of the pressing block 313; the partition plate 310 separates raw materials which are not exhausted in the shell 201 from raw materials which are exhausted on the right side of the partition plate 310, the pressing block 313 prevents raw materials in the shell 201 from entering the decompression chamber 301, and then the pressing block 313 moves up and down to control whether the chute 304 can circulate with raw materials in the shell 201; when the pressure in the chute 304 is reduced, the raw materials in the shell 201 push the pressing block 313 upwards, so that the pressing block 313 does not prevent the raw materials from entering the decompression chamber 301 after moving upwards, and the effect that the raw materials enter the decompression chamber 301 is realized; when the valve plate 305 is moved downwards to exhaust, the valve plate 305 presses down raw materials, so that the raw materials in the chute 304 squeeze the pressing block 313, the pressing block 313 is pushed back to the original position, the pressing block 313 blocks the raw materials in the shell 201 and the chute 304 from flowing back to the shell 201 again, and the exhausted raw materials are prevented from flowing back to the shell 201 again; the valve plate 305 moves up and down to enable raw materials to enter the chute 304 in batches, so that only a small amount of raw materials are exhausted each time, incomplete exhaust in the raw materials can be prevented, and the effect of improving the capability of exhausting air in the raw materials is achieved.
This example may achieve the effect of moving the feedstock toward the extrusion block 302, as shown in fig. 1-12.
In the preparation method of the flame retardant plastic master batch, a rotating shaft 309 is fixedly connected to the lower side of the chute 304, the position of the rotating shaft 309 is on the right side of the partition plate 310, and a pressing plate 314 is rotatably connected to the rotating shaft 309; when the valve plate 305 moves upwards, the raw materials on two sides of the partition plate 310 push the pressing block 313 and the pressing plate 314 upwards, so that the pressing block 313 opens a passage between the chute 304 and the housing 201, and meanwhile, the pressing plate 314 prevents the raw materials from flowing to the chute 304 after the right side of the partition plate 310 is exhausted, so that repeated exhausting operation on a batch of raw materials is prevented; when the valve plate 305 moves downwards to exhaust, the raw materials in the chute 304 push the pressing block 313 and the pressing plate 314 downwards, the pressing block 313 closes the passage between the chute 304 and the housing 201, meanwhile, the pressing plate 314 rotates downwards, the passage between the chute 304 and the right side of the partition plate 310 is opened, and then the raw materials in the chute 304 move to the right side of the partition plate 310 and then flow to the extrusion block 302, so that the effect of moving the raw materials to the extrusion block 302 is realized.
As shown in fig. 1-12, this example may achieve the effect of movement of valve plate 305.
In the preparation method of the flame-retardant plastic master batch, the front side of the bracket 101 is fixedly connected with the hydraulic cylinder 102, the top end of the hydraulic cylinder 102 is fixedly connected with the connecting rod 103, and the rear side of the connecting rod 103 is fixedly connected on the valve plate 305; when the top end of the hydraulic cylinder 102 moves, the connecting rod 103 is driven to move, so that the valve plate 305 is driven to move, and the effect of moving the valve plate 305 is achieved.
This example can achieve the effect of embossing the logo on the strip-like semifinished product, as shown in figures 1 to 12.
In the preparation method of the flame-retardant plastic master batch, the right side of the connecting rod 103 is fixedly connected with the top plate 104, a plurality of round grooves 105 are formed in the top plate 104, and the right side of the extrusion block 302 is fixedly connected with the bottom plate 303; the connecting rod 103 moves downwards to extrude the raw materials into a strip-shaped semi-finished product through the extrusion block 302, the extruded strip-shaped semi-finished product moves to the bottom plate 303, meanwhile, the connecting rod 103 drives the top plate 104 to move downwards, and then drives the round groove 105 in the connecting rod to move downwards, at the moment, the top plate 104 presses the strip-shaped semi-finished product between the bottom plate 303 and the round groove 105, and the mark is stamped on the strip-shaped semi-finished product through a male die fixedly connected in the round groove 105, so that the effect of stamping the mark on the strip-shaped semi-finished product is achieved.
This example achieves the effect of uniformly extruding a bar-like semifinished product, as shown in fig. 1-11.
In the preparation method of the flame retardant plastic master batch, the right part of the decompression chamber 301 is fixedly connected with a guide plate 311, and a plurality of square holes 312 are formed in the guide plate 311; raw materials remove and can pass through guide plate 311 before extrusion piece 302, and then square hole 312 on guide plate 311 can guide the raw materials direction of movement that is extruded, and then makes the raw materials even extrude through extrusion piece 302, and then realizes the effect of even extrusion strip semi-manufactured goods.
The flame-retardant plastic master batch prepared by the preparation method of the flame-retardant plastic master batch comprises the following raw materials in parts by weight: 4 parts of halogen-free auxiliary flame retardant, 1 part of lubricant, 35 parts of magnesium hydroxide, 10 parts of carbon fiber powder, 10 parts of polytetrafluoroethylene and 45 parts of polyamide.

Claims (10)

1. A preparation method of flame-retardant plastic master batch is characterized in that: the method comprises the following steps:
s1: heating and melting raw materials, stirring and mixing the raw materials, and adding the mixed raw materials into an extrusion device;
s2: preparing the raw materials into strip-shaped semi-finished products through an extrusion device;
s3: stamping marks on the strip-shaped semi-finished product to prepare a semi-finished product material;
s4: cooling the semi-finished material;
s5: cutting off the cooled semi-finished product material to obtain the flame-retardant plastic master batch.
2. The method for preparing the flame retardant plastic master batch according to claim 1, which is characterized in that: the heating temperature in the step S1 is 275-280 ℃.
3. The method for preparing the flame retardant plastic master batch according to claim 1, which is characterized in that: the depth of the embossing mark in the step S3 is 0.5mm-1mm.
4. The method for preparing the flame retardant plastic master batch according to claim 1, which is characterized in that: and in the step S5, the length of the master batch after cutting is 10mm-15mm.
5. The method for preparing the flame retardant plastic master batch according to claim 1, which is characterized in that: the extrusion device comprises a support (101), wherein a shell (201) is fixedly connected to the support (101), a decompression chamber (301) is fixedly connected to the right side of the shell (201), and an extrusion block (302) is fixedly connected to the right side of the decompression chamber (301).
6. The method for preparing the flame retardant plastic master batch according to claim 5, which is characterized in that: the filter plate (202) is fixedly connected to the right end of the shell (201), the baffle (203) is fixedly connected to the right end of the filter plate (202), the chute (304) is formed in the upper portion of the decompression chamber (301), the valve plate (305) is connected to the inside of the chute (304) in a sliding mode, the bottom of the valve plate (305) is provided with the groove (306), the air valve (307) is fixedly connected to the upper side of the valve plate (305), the air valve (307) is arranged above the groove (306), and the upper side of the chute (304) is provided with the plurality of exhaust grooves (308).
7. The method for preparing the flame retardant plastic master batch according to claim 6, which is characterized in that: the left side sliding of spout (304) is connected with briquetting (313), decompression chamber (301) inside rigid coupling has baffle (310), baffle (310) set up on briquetting (313) right side, spout (304) downside rigid coupling has pivot (306), pivot (306) set up on baffle (310) right side, rotate on pivot (306) and be connected with clamp plate (314).
8. The method for preparing the flame retardant plastic master batch according to claim 7, which is characterized in that: the hydraulic cylinder (102) is fixedly connected to the front side of the support (101), the connecting rod (103) is fixedly connected to the top end of the hydraulic cylinder (102), the rear side of the connecting rod (103) is fixedly connected to the valve plate (305), the top plate (104) is fixedly connected to the right side of the connecting rod (103), a plurality of circular grooves (105) are formed in the top plate (104), and the bottom plate (303) is fixedly connected to the right side of the extrusion block (302).
9. The method for preparing the flame retardant plastic master batch according to claim 8, which is characterized in that: the right part of the decompression chamber (301) is fixedly connected with a guide plate (311), and a plurality of square holes (312) are formed in the guide plate (311).
10. The flame-retardant plastic master batch prepared by the preparation method of the flame-retardant plastic master batch according to claim 1 is characterized in that: the material comprises the following components in parts by weight: 4 parts of halogen-free auxiliary flame retardant, 1 part of lubricant, 35 parts of magnesium hydroxide, 10 parts of carbon fiber powder, 10 parts of polytetrafluoroethylene and 45 parts of polyamide.
CN202310393518.5A 2023-04-13 2023-04-13 Flame-retardant plastic master batch and preparation method thereof Pending CN116330522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310393518.5A CN116330522A (en) 2023-04-13 2023-04-13 Flame-retardant plastic master batch and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310393518.5A CN116330522A (en) 2023-04-13 2023-04-13 Flame-retardant plastic master batch and preparation method thereof

Publications (1)

Publication Number Publication Date
CN116330522A true CN116330522A (en) 2023-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310393518.5A Pending CN116330522A (en) 2023-04-13 2023-04-13 Flame-retardant plastic master batch and preparation method thereof

Country Status (1)

Country Link
CN (1) CN116330522A (en)

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