CN113201214A - Black halogen-free flame-retardant PC film and production process thereof - Google Patents
Black halogen-free flame-retardant PC film and production process thereof Download PDFInfo
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- CN113201214A CN113201214A CN202110509142.0A CN202110509142A CN113201214A CN 113201214 A CN113201214 A CN 113201214A CN 202110509142 A CN202110509142 A CN 202110509142A CN 113201214 A CN113201214 A CN 113201214A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or 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
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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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
- C08J2427/00—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 halogen; Derivatives of such polymers
- C08J2427/02—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 halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—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 halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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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
- C08K3/02—Elements
- C08K3/04—Carbon
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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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- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention discloses a black halogen-free flame-retardant PC film which is prepared from the following raw materials in parts by weight: 91-97% of PC raw material, 0.5-2% of flame retardant, 0.5-2% of flexibilizer, 0.5-1% of antioxidant, 0.5-1.5% of macromolecular anti-dripping agent, 0.5-1.5% of small molecular anti-dripping agent and 0.5-1% of black color master batch, wherein the PC raw material is PC base resin, the main component is polycarbonate, and the melt index of the polycarbonate is 5-20/10 min; according to the invention, the macromolecule anti-dripping agent and the micromolecule anti-dripping agent are added in the production and preparation process of the PC film, the macromolecule anti-dripping agent plays a role in preventing dripping, and the micromolecule polytetrafluoroethylene coats a film on the outer layer of the melt, so that the anti-dripping agent can be well dispersed in the PC film, the wear resistance of the material is improved, the effects of internal lubrication and demolding are simultaneously played, the poor solvent resistance of the PC film can be avoided, and the PC film can resist strong alkali, oxidative acid, amine and ketone corrosive liquids.
Description
Technical Field
The invention relates to the field of PC films, in particular to a black halogen-free flame-retardant PC film and a production process thereof.
Background
The black halogen-free flame-retardant PC film is a black PC film, is chlorine-free, bromine-free and unlimited in heavy metal content, is a real green environment-friendly flame-retardant polycarbonate film, has textures such as fine sand, medium sand, coarse sand, matte and the like on the surface, and has good formability, excellent mechanical properties, good dimensional stability at high temperature and high flame-retardant grade;
however, the existing black halogen-free flame-retardant PC film is easy to drip during the production and preparation process; secondly, the existing black halogen-free flame-retardant PC film has poor wear resistance; secondly, the existing black halogen-free flame-retardant PC film has poor solvent resistance and is not resistant to strong alkali, oxidizing acid, amine and ketone corrosive liquids.
Disclosure of Invention
The invention aims to provide a black halogen-free flame-retardant PC film, wherein the existing black halogen-free flame-retardant PC film is easy to drip during the production and preparation process; secondly, the existing black halogen-free flame-retardant PC film has poor wear resistance; secondly, the existing black halogen-free flame-retardant PC film has poor solvent resistance and is not resistant to strong alkali, oxidizing acid, amine and ketone corrosive liquids; according to the invention, the macromolecular anti-dripping agent is added in the production and preparation process of the PC film, the polytetrafluoroethylene with large molecular weight is fiberized under the action of the shearing force of a screw rod so as to form a net structure, and the macromolecular anti-dripping agent is a suspended emulsion formed by dispersing the polytetrafluoroethylene in water under the action of a dispersing agent, so that the anti-dripping effect is achieved; the small-molecular anti-dripping agent is added in the production and preparation process of the PC film, the polytetrafluoroethylene with small molecular weight is added into the melt, so that the friction coefficient of the surface of the material can be obviously reduced, and the outer layer of the melt is coated with a film, so that the anti-dripping agent can be well dispersed in the PC film, and the wear resistance of the material is improved; by adding the macromolecular anti-dripping agent and the micromolecular anti-dripping agent in the production and preparation process of the PC film, the effects of internal lubrication and demolding can be achieved, and meanwhile, the poor solvent resistance of the PC film can be avoided, so that the PC film can resist strong alkali, oxidizing acid, amine and ketone corrosive liquid.
The purpose of the invention can be realized by the following technical scheme:
a black halogen-free flame-retardant PC film is composed of the following raw materials in parts by weight: 91-97% of PC raw material, 0.5-2% of flame retardant, 0.5-2% of flexibilizer, 0.5-1% of antioxidant, 0.5-1.5% of macromolecular anti-dripping agent, 0.5-1.5% of micromolecular anti-dripping agent and 0.5-1% of black master batch.
Further, the PC raw material is PC base resin, the main component is polycarbonate, and the melt index of the polycarbonate is 5-20/10 min;
furthermore, the main component of the toughening agent is full acrylate, and the substance is used for increasing the flexibility of the adhesive film layer.
Further, the main component of the flame retardant is inorganic antimony trioxide.
Furthermore, the main components of the antioxidant are ethoxyquinoline and 2, 6-di-tert-butyl-p-cresol, and the 2, 6-di-tert-butyl-p-cresol has a low melting point of 69-70 ℃, is easy to decompose, is easy to degrade in air, is sensitive to light and is matched with the ethoxyquinoline in a synergistic manner.
Furthermore, the main components of the macromolecular anti-dripping agent and the micromolecular anti-dripping agent are polytetrafluoroethylene, the macromolecular anti-dripping agent is polytetrafluoroethylene with the molecular weight of 400-500 ten thousand, and the micromolecular anti-dripping agent is polytetrafluoroethylene with the molecular weight of 30 ten thousand.
Furthermore, the main component of the black master batch is carbon melanin, and the carbon content of the carbon black master batch taking PC as a carrier is 40-50%.
A production process of a black halogen-free flame-retardant PC film specifically comprises the following steps:
the method comprises the following steps: mixing a PC raw material, a flame retardant, a toughening agent, an antioxidant, a macromolecular anti-dripping agent, a micromolecular anti-dripping agent and black color master batch according to a proportion, and crystallizing and drying the mixture;
step two: putting the crystallized and dried mixture into a melt extruder, and heating, melting and plasticizing in the melt extruder;
step three: when the melt flows through the melt pipe, the temperature of the melt along the pipe wall has a larger temperature difference with the temperature of the melt center, the melt pipe is connected with a static mixer inside one end of the die head, when the melt flows through the static mixer, the melt can automatically generate the mixing action of separation-combination-separation-combination, the melt temperature is uniform, and the melt entering the die head has uniform temperature;
step four: the melt passes through a melt filter formed by combining a stainless steel mesh and a stainless steel sintered felt, and foreign matters such as impurities, gel particles, fish eyes and the like possibly existing in the melt are removed;
step five: metering the melt by means of a high-precision gear pump, applying a sufficient and stable pressure to the melt supplied to the die, overcoming the resistance of the melt on passing through a filter, and forming the mixture into a film of uniform thickness
The invention has the beneficial effects that:
1. the macromolecular anti-dripping agent is added in the production and preparation process of the PC film, the polytetrafluoroethylene with large molecular weight is fiberized under the action of the shearing force of a screw rod so as to form a net structure, and the macromolecular anti-dripping agent is a suspended emulsion formed by dispersing the polytetrafluoroethylene in water under the action of a plurality of dispersing agents and plays a role in preventing dripping;
2. the small-molecular anti-dripping agent is added in the production and preparation process of the PC film, the polytetrafluoroethylene with small molecular weight is added into the melt, so that the friction coefficient of the surface of the material can be obviously reduced, and the outer layer of the melt is coated with a film, so that the anti-dripping agent can be well dispersed in the PC film, and the wear resistance of the material is improved;
3. by adding the macromolecular anti-dripping agent and the micromolecular anti-dripping agent in the production and preparation process of the PC film, the effects of internal lubrication and demolding can be achieved, and meanwhile, the poor solvent resistance of the PC film can be avoided, so that the PC film can resist strong alkali, oxidizing acid, amine and ketone corrosive liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A black halogen-free flame-retardant PC film is composed of the following raw materials in parts by weight: 91-97% of PC raw material, 0.5-2% of flame retardant, 0.5-2% of flexibilizer, 0.5-1% of antioxidant, 0.5-1.5% of macromolecular anti-dripping agent, 0.5-1.5% of micromolecular anti-dripping agent and 0.5-1% of black master batch.
The PC raw material is PC base resin, the main component is polycarbonate, and the melt index of the polycarbonate is 5-20/10 min;
the main component of the toughening agent is full acrylate, and the toughening agent is a substance for increasing the flexibility of an adhesive film layer.
The main component of the flame retardant is inorganic antimony trioxide.
The main components of the antioxidant are ethoxyquinoline and 2, 6-di-tert-butyl-p-cresol, and the 2, 6-di-tert-butyl-p-cresol is low in melting point, 69-70 ℃, easy to decompose, easy to degrade in air, sensitive to light and cooperatively compatible with ethoxyquinoline.
The main components of the macromolecular anti-dripping agent and the micromolecular anti-dripping agent are polytetrafluoroethylene, the macromolecular anti-dripping agent is polytetrafluoroethylene with the molecular weight of 400-500 ten thousand, and the micromolecular anti-dripping agent is polytetrafluoroethylene with the molecular weight of 30 ten thousand.
The main component of the black color master batch is carbon melanin, and the carbon content of the carbon black master batch taking PC as a carrier is 40-50%.
A production process of a black halogen-free flame-retardant PC film specifically comprises the following steps:
the method comprises the following steps: mixing a PC raw material, a flame retardant, a toughening agent, an antioxidant, a macromolecular anti-dripping agent, a micromolecular anti-dripping agent and black color master batch according to a proportion, and crystallizing and drying the mixture;
step two: putting the crystallized and dried mixture into a melt extruder, and heating, melting and plasticizing in the melt extruder;
step three: when the melt flows through the melt pipe, the temperature of the melt along the pipe wall has a larger temperature difference with the temperature of the melt center, the melt pipe is connected with a static mixer inside one end of the die head, when the melt flows through the static mixer, the melt can automatically generate the mixing action of separation-combination-separation-combination, the melt temperature is uniform, and the melt entering the die head has uniform temperature;
step four: the melt passes through a melt filter formed by combining a stainless steel mesh and a stainless steel sintered felt, and foreign matters such as impurities, gel particles, fish eyes and the like possibly existing in the melt are removed;
step five: the melt is metered by a high-precision gear pump, and the pressure is sufficiently and stably applied to the melt supplied to the die, so that the resistance of the melt passing through a filter is overcome, and the mixture is formed into a film with uniform thickness.
According to the invention, the macromolecular anti-dripping agent is added in the production and preparation process of the PC film, the polytetrafluoroethylene with large molecular weight is fiberized under the action of the shearing force of a screw rod so as to form a net structure, and the macromolecular anti-dripping agent is a suspended emulsion formed by dispersing the polytetrafluoroethylene in water under the action of some dispersing agents, so that the anti-dripping effect is achieved; the small-molecular anti-dripping agent is added in the production and preparation process of the PC film, the polytetrafluoroethylene with small molecular weight is added into the melt, so that the friction coefficient of the surface of the material can be obviously reduced, and the outer layer of the melt is coated with a film, so that the anti-dripping agent can be well dispersed in the PC film, and the wear resistance of the material is improved; by adding the macromolecular anti-dripping agent and the micromolecular anti-dripping agent in the production and preparation process of the PC film, the effects of internal lubrication and demolding can be achieved, and meanwhile, the poor solvent resistance of the PC film can be avoided, so that the PC film can resist strong alkali, oxidizing acid, amine and ketone corrosive liquid.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (8)
1. A black halogen-free flame-retardant PC film is characterized in that: the black halogen-free flame-retardant PC film is prepared from the following raw materials in parts by weight: 91-97% of PC raw material, 0.5-2% of flame retardant, 0.5-2% of flexibilizer, 0.5-1% of antioxidant, 0.5-1.5% of macromolecular anti-dripping agent, 0.5-1.5% of micromolecular anti-dripping agent and 0.5-1% of black master batch.
2. The black halogen-free flame retardant PC film according to claim 1, wherein: the PC raw material is PC base resin, the main component is polycarbonate, and the melt index of the PC raw material is 5-20/10 min.
3. The black halogen-free flame retardant PC film according to claim 1, wherein: the main component of the toughening agent is full acrylate, and the toughening agent is a substance for increasing the flexibility of an adhesive film layer.
4. The black halogen-free flame retardant PC film according to claim 1, wherein: the main component of the flame retardant is inorganic antimony trioxide.
5. The black halogen-free flame retardant PC film according to claim 1, wherein: the antioxidant mainly comprises ethoxyquinoline and 2, 6-di-tert-butyl-p-cresol, wherein the 2, 6-di-tert-butyl-p-cresol is low in melting point, is 69-70 ℃, is easy to decompose, is easy to degrade in air, is sensitive to light and is matched with the ethoxyquinoline in a synergistic manner.
6. The black halogen-free flame retardant PC film according to claim 1, wherein: the main components of the macromolecular anti-dripping agent and the micromolecular anti-dripping agent are polytetrafluoroethylene, the macromolecular anti-dripping agent is polytetrafluoroethylene with the molecular weight of 400-500 ten thousand, and the micromolecular anti-dripping agent is polytetrafluoroethylene with the molecular weight of 30 ten thousand.
7. The black halogen-free flame retardant PC film according to claim 1, wherein: the main component of the black color master batch is carbon melanin, and the carbon content of the carbon black master batch taking PC as a carrier is 40-50%.
8. The production process of the black halogen-free flame-retardant PC film according to claim 1, characterized by comprising the following steps:
the method comprises the following steps: mixing a PC raw material, a flame retardant, a toughening agent, an antioxidant, a macromolecular anti-dripping agent, a micromolecular anti-dripping agent and black color master batch according to a proportion, and crystallizing and drying the mixture;
step two: putting the crystallized and dried mixture into a melt extruder, and heating, melting and plasticizing in the melt extruder;
step three: when the melt flows through the melt pipe, the temperature of the melt along the pipe wall has a larger temperature difference with the temperature of the melt center, the melt pipe is connected with a static mixer inside one end of the die head, when the melt flows through the static mixer, the melt can automatically generate the mixing action of separation-combination-separation-combination, the melt temperature is uniform, and the melt entering the die head has uniform temperature;
step four: the melt passes through a melt filter formed by combining a stainless steel mesh and a stainless steel sintered felt, and foreign matters such as impurities, gel particles, fish eyes and the like possibly existing in the melt are removed;
step five: the melt is metered by a high-precision gear pump, and the pressure is sufficiently and stably applied to the melt supplied to the die, so that the resistance of the melt passing through a filter is overcome, and the mixture is formed into a film with uniform thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509142.0A CN113201214A (en) | 2021-05-11 | 2021-05-11 | Black halogen-free flame-retardant PC film and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110509142.0A CN113201214A (en) | 2021-05-11 | 2021-05-11 | Black halogen-free flame-retardant PC film and production process thereof |
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| CN113201214A true CN113201214A (en) | 2021-08-03 |
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| CN202110509142.0A Withdrawn CN113201214A (en) | 2021-05-11 | 2021-05-11 | Black halogen-free flame-retardant PC film and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491016A (en) * | 2022-09-30 | 2022-12-20 | 金发科技股份有限公司 | Self-lubricating polycarbonate reinforced composite material and preparation method and application thereof |
-
2021
- 2021-05-11 CN CN202110509142.0A patent/CN113201214A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491016A (en) * | 2022-09-30 | 2022-12-20 | 金发科技股份有限公司 | Self-lubricating polycarbonate reinforced composite material and preparation method and application thereof |
| CN115491016B (en) * | 2022-09-30 | 2023-06-06 | 金发科技股份有限公司 | Self-lubricating polycarbonate reinforced composite material and preparation method and application thereof |
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