CN111019184A - High-content easily-dispersible foaming master batch and preparation method thereof - Google Patents

High-content easily-dispersible foaming master batch and preparation method thereof Download PDF

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CN111019184A
CN111019184A CN201911353576.5A CN201911353576A CN111019184A CN 111019184 A CN111019184 A CN 111019184A CN 201911353576 A CN201911353576 A CN 201911353576A CN 111019184 A CN111019184 A CN 111019184A
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foaming
temperature
master batch
parts
zone
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Inventor
张永毅
翟建峰
朱军
周涛
陈名海
李鹏君
李畅东
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Suzhou Institute of Nano Tech and Nano Bionics of CAS
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Suzhou Institute of Nano Tech and Nano Bionics of CAS
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Priority to CN201911353576.5A priority Critical patent/CN111019184A/en
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    • C08J9/16—Making expandable particles
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    • 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
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    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
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    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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    • C08J2439/00—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 a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Derivatives of such polymers
    • C08J2439/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
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    • C08J2451/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract

The invention discloses a high-content easy-to-disperse foaming master batch and a preparation method thereof. The foaming master batch comprises the following components in parts by weight: 70-95 parts of foaming master batch precursor, 5-30 parts of resin, 0-2 parts of auxiliary agent and 0.1-0.5 part of antioxidant, wherein the preparation method of the foaming master batch precursor comprises the following steps: dispersing a carrier into a solvent to form a solution, then uniformly mixing and dispersing the solution and a foaming agent to form slurry, and then drying or concentrating the slurry to form a paste; and then, carrying out granulation and drying treatment on the paste by using an extrusion granulator to obtain a foaming agent master batch precursor. The method has the advantages of simple process, low energy consumption and low cost, and the main solvent used in the preparation process is water or ethanol, so that the method meets the requirement of green production.

Description

High-content easily-dispersible foaming master batch and preparation method thereof
Technical Field
The invention belongs to the technical field of plastic master batch preparation, and particularly relates to a high-content easily-dispersible foaming master batch and a preparation method thereof.
Background
The plastic masterbatch is a commonly used plastic processing aid, and generally, the plastic masterbatch is composed of a filler, a carrier resin, various aids and the like according to a certain proportion. Has the characteristics of high content, easy dispersion, low cost and the like, and is suitable for preparing modified composite materials in industry on a large scale. According to different functions, the material can be divided into color master batches, moisture absorption defoaming master batches, flame-retardant master batches, conductive master batches, ultraviolet-resistant master batches, weather-resistant master batches, foaming master batches and the like.
The foaming agent is used as a necessary additive substance of the foamed plastic, so that the weight of the material can be effectively reduced, the production cost is reduced, and meanwhile, the foamed material has the advantages of good heat insulation, buffering property, sound absorption property, weather resistance, rebound resilience and the like. In addition, the material is subjected to foaming treatment, so that shrinkage traces of the product during injection molding can be eliminated, and the appearance effect of the product is improved; the deformation of the product caused by stress change after injection molding is reduced; the injection molding period is shortened, and the production efficiency is improved; however, the development of the foaming material is always troubled by the problems of non-uniform cell size, series connection of cells, residual foaming agent, dust emission of the foaming agent and the like in the reproduction process of the foaming material.
Disclosure of Invention
The invention mainly aims to provide a high-content easy-to-disperse foaming master batch and a preparation method thereof, so as to overcome the defects of the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
the embodiment of the invention provides a high-content easy-to-disperse foaming master batch, which comprises the following components in parts by weight: 70-95 parts of foaming master batch precursor, 5-30 parts of resin, 0-2 parts of auxiliary agent and 0.1-0.5 part of antioxidant.
Further, the foaming master batch precursor comprises the following components in parts by weight: 3-30 parts of carrier and 70-97 parts of foaming agent.
The embodiment of the invention also provides a preparation method of the high-content easily-dispersible foaming master batch, which comprises the following steps:
and uniformly mixing the foaming master batch precursor, the resin, the auxiliary agent and the antioxidant according to the composition of the high-content easily-dispersible foaming master batch, and then feeding the uniformly-mixed material into a double-screw extruder for granulation to obtain the high-content easily-dispersible foaming master batch.
Compared with the prior art, the invention has the beneficial effects that:
1) the preparation process of the foaming master batch is extremely simple, has extremely low energy consumption, low cost and low processing temperature, has larger difference compared with the prior art which uses double screws and high temperature environment, and is suitable for the requirements of low emission and safe production;
2) compared with the traditional foaming master batch preparation technology, the master batch has high foaming agent content and the foaming agent is uniformly dispersed.
Detailed Description
In view of the defects of the prior art, the inventor of the present invention has long studied and largely practiced to propose the technical solution of the present invention, which will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. 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.
One aspect of the embodiment of the invention provides a high-content easily-dispersible foaming master batch, which comprises the following components in parts by weight: 70-95 parts of foaming master batch precursor, 5-30 parts of resin, 0-2 parts of auxiliary agent and 0.1-0.5 part of antioxidant.
In some more specific embodiments, the foaming masterbatch precursor comprises the following components in parts by weight: 3-30 parts of carrier and 70-97 parts of foaming agent.
Further, the carrier includes any one of PEG and PVP, and is not limited thereto.
Further, the carrier includes any one or a combination of two or more of PVP K15, PVP K30, PVP K60, PVP K90, PVP K120, PEG2000, PEG 4000, PEG 6000, and PEG 8000, but is not limited thereto.
Further, the foaming agent includes any one or a combination of two or more of Azodicarbonamide (AC), azoaminobenzene, barium difluoride, diethyl azodicarboxylate, 4-oxybis-benzenesulfonylhydrazide (OBSH), and p-Toluenesulfonylhydrazide (TSH), without being limited thereto.
In some more specific embodiments, the resin includes any one or a combination of two or more of EVA, POE, and POP, without being limited thereto.
Further, the auxiliary agent includes any one or a combination of two or more of polyethylene wax, paraffin wax, stearic acid, and calcium stearate, and is not limited thereto.
Further, the antioxidant includes any one of the antioxidant 1010 and the antioxidant 168, and is not limited thereto.
The embodiment of the invention also provides a preparation method of the high-content easily-dispersible foaming master batch, which comprises the following steps:
uniformly mixing the foaming master batch precursor, the resin, the auxiliary agent and the antioxidant according to the composition of the high-content easily-dispersible foaming master batch to form a mixed material;
and inputting the mixed material into a double-screw extruder for granulation to obtain high-content easily-dispersible foaming master batches.
In some more specific embodiments, the preparation method of the foaming masterbatch precursor comprises:
dispersing a carrier into a solvent to form a solution, then uniformly mixing and dispersing the solution and a foaming agent to form slurry, and then drying or concentrating the slurry to form a paste;
and performing granulation and drying treatment on the paste by using an extrusion granulator to obtain a foaming agent master batch precursor.
Further, the solvent includes any one of water and ethanol, and is not limited thereto.
Further, a high-speed disperser is used for dispersing the solution and the foaming agent.
Further, the rotating speed of the high-speed dispersion machine is 50-1000 rpm.
Further, the rotating speed of the extrusion granulator is 30-100 rpm.
Further, the temperature during the drying treatment is 50-90 ℃.
Further, the method further comprises: and drying the high-content easily-dispersible foaming master batch obtained by granulation.
Furthermore, a high-speed mixer is used for dispersing the components of the high-content easily-dispersible foaming master batch.
Further, in the granulation, the twin-screw extruder adopts process conditions including: the temperature of the first zone is 65-90 ℃, the temperature of the second zone is 65-100 ℃, the temperature of the third zone is 75-110 ℃, the temperature of the fourth zone is 75-110 ℃, the temperature of the fifth zone is 75-110 ℃, the temperature of the sixth zone is 75-110 ℃, the temperature of the seventh zone is 75-110 ℃, the temperature of the eighth zone is 70-100 ℃, the temperature of the ninth zone is 70-100 ℃, the temperature of the tenth zone is 70-100 ℃ and the temperature of the head is 70-100 ℃. The twin screw extruder used in the present invention is a Kobinuron CTE-35PLUS type extruder.
In some more specific embodiments, the method of making comprises:
(1) dissolving a carrier in a solvent to obtain a carrier solution, uniformly mixing the solution with a foaming agent, and then adjusting a high-speed dispersion machine to uniformly disperse the solution;
(2) drying the mixture to paste, or evaporating the mixture to paste under reduced pressure by using a pressure reducing device; then, extruding and granulating by using an extrusion granulator, and drying to obtain a high-content easily-dispersed foaming master batch precursor;
(3) uniformly mixing the foaming master batch precursor, the resin, the auxiliary agent and the antioxidant in a high-speed mixer; and pouring the uniformly mixed materials into a feed inlet of a double-screw extruder for granulation, and drying the obtained particles to obtain the high-content easily-dispersible foaming master batch.
Preferably, the temperature of the twin-screw extruder is controlled as follows: the temperature in the first zone is 75 ℃, the temperature in the second zone is 80 ℃, the temperature in the third zone is 85 ℃, the temperature in the fourth zone is 90 ℃, the temperature in the fifth zone is 95 ℃, the temperature in the sixth zone is 95 ℃, the temperature in the seventh zone is 95 ℃, the temperature in the eighth zone is 90 ℃, the temperature in the ninth zone is 90 ℃, the temperature in the tenth zone is 90 ℃ and the temperature of the machine head is 80 ℃.
The technical solution of the present invention is further described in detail with reference to several preferred embodiments, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
The experimental materials used in the examples used below were all available from conventional biochemical reagents companies, unless otherwise specified.
Example 1
(1) Dissolving 3 parts of PVP K30 in 100ml of water to obtain a solution of PVP K30, and marking as a solution I; uniformly mixing and wetting the solution I and 97 parts of Azodicarbonamide (AC), and then adjusting the rotating speed of a high-speed dispersion machine to 600rad/min to uniformly disperse the mixture; then drying the mixture in a blast drying oven at 60 ℃ to form paste; adjusting the rotating speed of an extrusion granulator to 60rad/min, extruding and granulating the paste, and then completely drying in a 70 ℃ blast drying oven to obtain a high-content foaming master batch precursor;
(2) uniformly mixing 95 parts by weight of foaming master batch precursor, 5 parts by weight of EVA (ethylene-vinyl acetate), 1 part by weight of polyethylene wax and 0.1 part by weight of antioxidant 168 in a high-speed mixer; then slowly and orderly pouring the mixture into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃, 90 ℃ and 90 ℃; the temperature of the die orifice is 85 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain high-content easily-dispersed foaming master batches; and (3) completely drying the prepared foaming master batch in a constant-temperature air-blast drying oven at 80 ℃, and sealing and storing at normal temperature.
Example 2
(1) Dissolving 15 parts of PVP K60 in 100ml of water to obtain a solution of PVP K60, and marking as a solution I; uniformly mixing and wetting the solution I and 85 parts of azoaminobenzene, and then adjusting the rotating speed of a high-speed dispersion machine to 800rad/min to uniformly disperse the mixture; then drying the mixture in a forced air drying oven at 50 ℃ to form paste; adjusting the rotating speed of an extrusion granulator to 30rad/min, extruding and granulating the paste, and then completely drying in a 50 ℃ blast drying oven to obtain a high-content foaming master batch precursor;
(2) uniformly mixing 95 parts by weight of foaming master batch precursor, 5 parts by weight of EVA (ethylene-vinyl acetate), 1 part by weight of paraffin and 0.3 part by weight of antioxidant 1010 in a high-speed mixer; then slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are 65 ℃, 70 ℃, 75 ℃, 70 ℃ and 70 ℃; the temperature of the die orifice is 75 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain high-content easily-dispersed foaming master batches; and (3) completely drying the prepared foaming master batch in a constant-temperature air-blast drying oven at 50 ℃, and sealing and storing at normal temperature.
Example 3
(1) Dissolving 5 parts of PVP K90 and 30 parts of PVP K90 by weight in 100ml of water to obtain a solution of PVP K90, and marking as a solution I; uniformly mixing and wetting the solution I and 70 parts of azodicarbonamide, and then adjusting the rotating speed of a high-speed dispersion machine to 1000rad/min to uniformly disperse the mixture; then drying the mixture in a forced air drying oven at 90 ℃ to form paste; adjusting the rotating speed of an extrusion granulator to 100rad/min, extruding and granulating the paste, and then completely drying in a blowing drying oven at 90 ℃ to obtain a high-content foaming master batch precursor;
(2) uniformly mixing 85 parts by weight of foaming master batch precursor, 15 parts by weight of POP, 1 part by weight of stearic acid, 0.1 part by weight of antioxidant 168 and 0.3 part by weight of antioxidant 1010 in a high-speed mixer; slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 90 ℃, 100 ℃, 110 ℃, 100 ℃; the temperature of the die orifice is 80 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain high-content easily-dispersed foaming master batches; and (3) completely drying the prepared foaming master batch in a constant-temperature air-blast drying oven at 60 ℃, and sealing and storing at normal temperature.
Example 4
(1) Dissolving 3 parts of PVP K120 in 100ml of water to obtain a solution of the carrier I, and marking as a solution I; uniformly mixing and wetting the solution I and 97 parts of diethyl azodicarboxylate, and then adjusting the rotating speed of a high-speed dispersion machine to 600rad/min to uniformly disperse the mixture; then drying the mixture in a forced air drying oven at 90 ℃ to form paste; adjusting the rotating speed of an extrusion granulator to 100rad/min, extruding and granulating the paste, and then completely drying in a blowing drying oven at 90 ℃ to obtain a high-content foaming master batch precursor;
(2) uniformly mixing 70 parts by weight of foaming master batch precursor, 30 parts by weight of POP, 1 part by weight of stearic acid and 0.5 part by weight of antioxidant 1010 in a high-speed mixer; then slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 70 ℃, 75 ℃, 80 ℃, 85 ℃, 80 ℃ and 80 ℃; the temperature of the die orifice is 80 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain high-content easily-dispersed foaming master batches; and (3) completely drying the prepared foaming master batch in a constant-temperature air-blast drying oven at 90 ℃, and sealing and storing at normal temperature.
Example 5
(1) Dissolving 30 parts of PEG2000 in 100ml of water to obtain a solution of a carrier I, and marking the solution as a solution I; uniformly mixing and wetting the solution I and 70 parts of 4, 4-oxo-bis-benzenesulfonyl hydrazide (OBSH), and then adjusting the rotating speed of a high-speed dispersion machine to 600rad/min to uniformly disperse the mixture; then drying the mixture in a blast drying oven at 70 ℃ to form paste; adjusting the rotating speed of an extrusion granulator to 70rad/min, extruding and granulating the paste, and then completely drying in a 70 ℃ blast drying oven to obtain a high-content foaming master batch precursor;
(2) uniformly mixing 85 parts by weight of foaming master batch precursor, 15 parts by weight of POE, 2 parts by weight of paraffin, 0.1 part by weight of antioxidant 1010 and 0.2 part by weight of antioxidant 168 in a high-speed mixer; then slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 75 ℃, 80 ℃, 85 ℃, 80 ℃ and 80 ℃; the temperature of the die orifice is 80 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain high-content easily-dispersed foaming master batches; and (3) completely drying the prepared foaming master batch in a constant-temperature air-blast drying oven at 70 ℃, and sealing and storing at normal temperature.
Example 6
(1) Dissolving 30 parts of PEG 4000 into 100ml of water to obtain a solution of a carrier I, and marking the solution as a solution I; uniformly mixing and wetting the solution I and 70 parts of p-toluenesulfonyl hydrazide (TSH), and then adjusting the rotating speed of a high-speed dispersion machine to 600rad/min to uniformly disperse the mixture; then drying the mixture in a forced air drying oven at 80 ℃ to paste; adjusting the rotating speed of an extrusion granulator to 80rad/min, extruding and granulating the paste, and then completely drying in a forced air drying oven at 80 ℃ to obtain a high-content foaming master batch precursor;
(2) uniformly mixing 70 parts by weight of foaming master batch precursor, 30 parts by weight of EVA (ethylene-vinyl acetate), 2 parts by weight of paraffin, 0.3 part by weight of antioxidant 1010 and 0.2 part by weight of antioxidant 168 in a high-speed mixer; then slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 70 ℃, 75 ℃, 80 ℃, 85 ℃, 80 ℃ and 80 ℃; the temperature of the die orifice is 80 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain high-content easily-dispersed foaming master batches; and (3) completely drying the prepared foaming master batch in a constant-temperature air-blast drying oven at 80 ℃, and sealing and storing at normal temperature.
Comparative example 1
Uniformly mixing 2.85 parts by weight of PVP K30, 92.15 parts by weight of Azodicarbonamide (AC), 5 parts by weight of EVA, 1 part by weight of polyethylene wax and 0.1 part by weight of antioxidant 168 in a high-speed mixer; then slowly and orderly pouring the mixture into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃, 90 ℃ and 90 ℃; the temperature of the die orifice is 85 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain foaming master batches; the method has the disadvantages of serious dust emission, serious agglomeration of the foaming agent in the master batch and poor foaming effect.
Comparative example 2
Uniformly and uniformly mixing 14.25 parts by weight of PVP K60, 80.75 parts by weight of azoaniline, 5 parts by weight of EVA, 10 parts by weight of paraffin and 0.3 part by weight of antioxidant 1010 in an internal mixer; then slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are 65 ℃, 70 ℃, 75 ℃, 70 ℃ and 70 ℃; the temperature of the die orifice is 75 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain foaming master batches; the method has the advantages of high energy consumption, serious pollution, serious agglomeration of the foaming agent in the master batch and poor foaming effect.
Comparative example 3
Uniformly and uniformly mixing 4.75 parts by weight of PVP K90, 90.25 parts by weight of azodicarbonamide, 15 parts by weight of POP, 1 part by weight of stearic acid, 0.1 part by weight of antioxidant 168 and 0.3 part by weight of antioxidant 1010 in an internal mixer; then slowly and orderly pouring into a double-screw feeding port, wherein the rotating speed of the double screws is 100rad/min, and the temperatures of the first to tenth zones of the double screws are respectively 70 ℃, 75 ℃, 80 ℃, 85 ℃, 80 ℃ and 80 ℃; the temperature of the die orifice is 80 ℃; drawing the rubber strips pulled out by the extruder into a granulator, and uniformly cutting and granulating to obtain foaming master batches; the method has high energy consumption, serious pollution and serious agglomeration of the foaming agent in the master batch.
In addition, the inventors of the present invention have also made experiments with other materials, process operations, and process conditions described in the present specification with reference to the above examples, and have obtained preferable results.
The aspects, embodiments, features and examples of the present invention should be considered as illustrative in all respects and not intended to be limiting of the invention, the scope of which is defined only by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.
The use of headings and chapters in this disclosure is not meant to limit the disclosure; each section may apply to any aspect, embodiment, or feature of the disclosure.
Throughout this specification, where a composition is described as having, containing, or comprising specific components or where a process is described as having, containing, or comprising specific process steps, it is contemplated that the composition of the present teachings also consist essentially of, or consist of, the recited components, and the process of the present teachings also consist essentially of, or consist of, the recited process steps.
It should be understood that the order of steps or the order in which particular actions are performed is not critical, so long as the teachings of the invention remain operable. Further, two or more steps or actions may be performed simultaneously.
While the invention has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

Claims (10)

1. The high-content easy-to-disperse foaming master batch is characterized by comprising the following components in parts by weight: 70-95 parts of foaming master batch precursor, 5-30 parts of resin, 0-2 parts of auxiliary agent and 0.1-0.5 part of antioxidant.
2. The high-content easily dispersible foaming masterbatch according to claim 1, wherein the foaming masterbatch precursor comprises the following components in parts by weight: 3-30 parts of a carrier and 70-97 parts of a foaming agent; preferably, the carrier comprises PEG and/or PVP; particularly preferably, the carrier comprises any one or the combination of more than two of PVP K15, PVP K30, PVP K60, PVP K90, PVP K120, PEG2000, PEG 4000, PEG 6000 and PEG 8000;
preferably, the foaming agent comprises any one or the combination of more than two of azodicarbonamide, azoaminobenzene, barium difluoride, diethyl azodicarboxylate, 4-oxybis benzenesulfonylhydrazide and p-toluenesulfonylhydrazide.
3. The high content easy-dispersible foaming masterbatch according to claim 1, characterized in that: the resin comprises any one or the combination of more than two of EVA, POE and POP.
4. The high content easy-dispersible foaming masterbatch according to claim 1, characterized in that: the auxiliary agent comprises any one or the combination of more than two of polyethylene wax, paraffin, stearic acid and calcium stearate;
and/or the antioxidant comprises antioxidant 1010 and/or antioxidant 168.
5. The method for preparing the high-content easily dispersible foaming masterbatch according to any one of claims 1 to 4, characterized by comprising the following steps:
uniformly mixing a foaming master batch precursor, resin, an auxiliary agent and an antioxidant according to the composition of the high-content easily-dispersible foaming master batch of any one of claims 1-4 to form a mixed material;
and inputting the mixed material into a double-screw extruder for granulation to obtain high-content easily-dispersible foaming master batches.
6. The method according to claim 5, wherein the method for preparing the foaming masterbatch precursor comprises:
dispersing a carrier into a solvent to form a solution, then uniformly mixing and dispersing the solution and a foaming agent to form slurry, and then drying or concentrating the slurry to form a paste;
and performing granulation and drying treatment on the paste by using an extrusion granulator to obtain a foaming agent master batch precursor.
7. The high content easy-dispersible foaming masterbatch according to claim 6, characterized in that: the solvent comprises water and/or ethanol.
8. The high content easy-dispersible foaming masterbatch according to claim 6, characterized in that: the preparation method comprises the following steps: fully dispersing the solution and the foaming agent by using a high-speed dispersion machine; preferably, the rotating speed of the high-speed dispersion machine is 50-1000 rpm;
and/or the rotating speed of the extrusion granulator is 30-100 rpm;
and/or the temperature of the drying treatment is 50-90 ℃.
9. The method of claim 8, further comprising: and drying the high-content easily-dispersible foaming master batch obtained by granulation.
10. The method of claim 8, wherein: in the granulation, the twin-screw extruder adopts the process conditions comprising: the temperature of the first zone is 65-90 ℃, the temperature of the second zone is 65-100 ℃, the temperature of the third zone is 75-110 ℃, the temperature of the fourth zone is 75-110 ℃, the temperature of the fifth zone is 75-110 ℃, the temperature of the sixth zone is 75-110 ℃, the temperature of the seventh zone is 75-110 ℃, the temperature of the eighth zone is 70-100 ℃, the temperature of the ninth zone is 70-100 ℃, the temperature of the tenth zone is 70-100 ℃ and the temperature of the head is 70-100 ℃.
CN201911353576.5A 2019-12-25 2019-12-25 High-content easily-dispersible foaming master batch and preparation method thereof Pending CN111019184A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207942A (en) * 1983-05-12 1984-11-26 Kanegafuchi Chem Ind Co Ltd Expanded particle of polyolefinic resin and its preparation
CN1593899A (en) * 2004-07-15 2005-03-16 四川大学 Preparation method of polypropylene millipore filtration sheet material
CN101838416A (en) * 2010-02-05 2010-09-22 上海子元汽车零部件有限公司 Expandable master batch, expandable material and manufacturing method thereof
CN103351477A (en) * 2013-07-09 2013-10-16 衣庆晖 Modified microsphere master batch of foaming agent and preparation method for modified microsphere master batch of foaming agent
CN107857891A (en) * 2017-09-30 2018-03-30 中国科学院长春应用化学研究所 The preparation method of polymer foams
CN109456565A (en) * 2018-09-13 2019-03-12 苏州巴夏科技发展有限公司 A kind of intelligent macromolecule material, preparation method and its utilize method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207942A (en) * 1983-05-12 1984-11-26 Kanegafuchi Chem Ind Co Ltd Expanded particle of polyolefinic resin and its preparation
CN1593899A (en) * 2004-07-15 2005-03-16 四川大学 Preparation method of polypropylene millipore filtration sheet material
CN101838416A (en) * 2010-02-05 2010-09-22 上海子元汽车零部件有限公司 Expandable master batch, expandable material and manufacturing method thereof
CN103351477A (en) * 2013-07-09 2013-10-16 衣庆晖 Modified microsphere master batch of foaming agent and preparation method for modified microsphere master batch of foaming agent
CN107857891A (en) * 2017-09-30 2018-03-30 中国科学院长春应用化学研究所 The preparation method of polymer foams
CN109456565A (en) * 2018-09-13 2019-03-12 苏州巴夏科技发展有限公司 A kind of intelligent macromolecule material, preparation method and its utilize method

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