CN113121913A - Scratch-resistant halogen-free flame-retardant long-fiber PP and preparation method thereof - Google Patents
Scratch-resistant halogen-free flame-retardant long-fiber PP and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- 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
- C08K2003/026—Phosphorus
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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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
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Abstract
The application discloses scratch-resistant halogen-free flame-retardant long-fiber PP, and belongs to the field of PP. The feed is prepared from the following raw materials in parts by weight: the flame retardant coating comprises, by weight, 84-90 parts of halogen-free PP, 11-15 parts of a flame retardant, 1.5-2 parts of an antioxidant, 3.5-4.5 parts of a lubricant, 10-15 parts of a scratch resistant agent, 1-2 parts of a smoke suppressant and 9-10 parts of a toughening agent; the scratch-resistant agent consists of glass powder and silicone, the flame retardant consists of a phosphorus flame retardant, a nitrogen flame retardant and an inorganic flame retardant, and the phosphorus flame retardant is red phosphorus. In addition, a preparation method of the scratch-resistant halogen-free flame-retardant long-fiber PP is also disclosed. The flame retardant and the scratch resistant agent are added into the raw materials of the long-fiber PP, the red phosphorus has the advantages of small addition amount, high flame retardant efficiency, low smoke, low toxicity, wide application and the like, and the red phosphorus, the nitrogen flame retardant and the inorganic flame retardant are compounded for use, so that the usable flame retardant amount is greatly reduced, and the processing performance and the physical and mechanical properties of the long-fiber PP are improved; meanwhile, the surface hardness and scratch resistance of the long-fiber PP can be enhanced by adding the glass powder and the silicone into the raw materials.
Description
Technical Field
The application relates to the field of PP (polypropylene), in particular to scratch-resistant halogen-free flame-retardant long-fiber PP and a preparation method thereof.
Background
Long-fiber PP (Polypropylene) is a polymer formed by propylene addition polymerization, is a colorless, odorless, nontoxic and semitransparent solid substance, and has the characteristics of chemical resistance, heat resistance, electrical insulation, high-strength mechanical property, good high-wear-resistance processing property and the like, so that the long-fiber PP is rapidly and widely developed and applied in various fields such as machinery, automobiles, electronic appliances, buildings, textiles, packaging, agriculture, forestry, fishery, food industry and the like since the past. Although PP has more advantages, PP has the defects of poor scratch resistance and flame retardant property, large molding shrinkage and easy combustion, thereby limiting the application of PP as a raw material or a special material of products such as injection molding, fibers, films and the like. Therefore, in order to expand the application field of PP, it is necessary to modify PP to improve its performance.
Disclosure of Invention
The application provides scratch-resistant halogen-free flame-retardant long-fiber PP and a preparation method thereof, which are used for improving the scratch resistance and the flame retardance of the long-fiber PP.
The scratch-resistant halogen-free flame-retardant long-fiber PP is prepared from the following raw materials in parts by weight: the flame retardant coating comprises, by weight, 84-90 parts of halogen-free PP, 11-15 parts of a flame retardant, 1.5-2 parts of an antioxidant, 3.5-4.5 parts of a lubricant, 10-15 parts of a scratch resistant agent, 1-2 parts of a smoke suppressant and 9-10 parts of a toughening agent; the scratch-resistant agent consists of glass powder and silicone, wherein the weight ratio of the glass powder to the silicone is as follows: glass powder: 3:7, wherein the flame retardant consists of a phosphorus flame retardant, a nitrogen flame retardant and an inorganic flame retardant, and the weight ratio of the phosphorus flame retardant to the nitrogen flame retardant to the inorganic flame retardant is as follows: phosphorus flame retardant: nitrogen-based flame retardant: the inorganic flame retardant is 11:21:7, the phosphorus flame retardant is red phosphorus, the nitrogen flame retardant is composed of melamine and melamine cyanuric acid, the weight ratio of the melamine to the melamine cyanuric acid is 1:3, and the inorganic flame retardant is aluminum hydroxide.
Preferably, the lubricant is calcium stearate, the toughening agent is at least one of polyolefin elastomer ethylene-propylene-octene copolymer, styrene-butadiene copolymer and hydrogenated styrene-butadiene-styrene block copolymer, and the smoke suppressant is at least one of zinc borate, molybdenum oxide and ferrocene.
Preferably, the antioxidant is a compound of a hindered amine antioxidant and a phosphite antioxidant.
Preferably, the phosphite antioxidant is one of trioctyl phosphite, tridecyl phosphite, tridodecyl phosphite and trihexadecyl phosphite.
Preferably, the composition also comprises the following components in parts by weight: 1-2 parts of an odor absorbent and 1-2 parts of a photocatalyst, wherein the halogen-free PP, the odor absorbent and the photocatalyst are in the following weight ratio: halogen-free PP: odor absorbent: the photocatalyst was 85:3: 3.
Preferably, the odor absorbent is at least one of activated carbon, porous silica, porous alumina, and porous molecular sieve, and the photocatalyst is titanium dioxide.
The preparation method of the scratch-resistant halogen-free flame-retardant long-fiber PP comprises the following steps:
1) weighing the following raw materials in parts by weight: halogen-free PP, a flame retardant, an antioxidant, a lubricant, a scratch resistant agent, a smoke suppressant and a toughening agent;
2) adding the raw materials in the step 1) into a high-speed mixer, and uniformly mixing, wherein the stirring speed of the high-speed mixer is 300r/min, and the stirring and mixing time is 30 min;
3) putting the raw materials mixed in the step 2) into a double-screw extruder for extrusion granulation, wherein the temperature of the double-screw extruder is set to be 190-220 ℃;
4) and (3) putting the granules obtained by extrusion in the step (3) into a drying box for drying, wherein the drying temperature is 70 ℃, and the drying time is 3 hours.
According to the technical scheme, the flame retardant and the scratch resistant agent are added into the raw materials of the long-fiber PP, the red phosphorus has the advantages of small addition amount, high flame retardant efficiency, low smoke, low toxicity, wide application and the like, and the red phosphorus, the nitrogen flame retardant and the inorganic flame retardant are compounded for use, so that the usable flame retardant amount is greatly reduced, and the processing performance and the physical and mechanical properties of the long-fiber PP are improved; meanwhile, the surface hardness and scratch resistance of the long-fiber PP can be enhanced by adding the glass powder and the silicone into the raw materials.
Drawings
Fig. 1 is a schematic flow chart of a preparation method of the scratch-resistant halogen-free flame-retardant long-fiber PP provided by the present application.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and equivalents fall within the scope of the appended claims.
The scratch-resistant halogen-free flame-retardant long-fiber PP provided by the application is prepared from the following raw materials in parts by weight: the flame retardant coating comprises, by weight, 84-90 parts of halogen-free PP, 11-15 parts of a flame retardant, 1.5-2 parts of an antioxidant, 3.5-4.5 parts of a lubricant, 10-15 parts of a scratch resistant agent, 1-2 parts of a smoke suppressant and 9-10 parts of a toughening agent; the scratch-resistant agent consists of glass powder and silicone, wherein the weight ratio of the glass powder to the silicone is as follows: glass powder: 3:7, wherein the flame retardant consists of a phosphorus flame retardant, a nitrogen flame retardant and an inorganic flame retardant, and the weight ratio of the phosphorus flame retardant to the nitrogen flame retardant to the inorganic flame retardant is as follows: phosphorus flame retardant: nitrogen-based flame retardant: the inorganic flame retardant is 11:21:7, the phosphorus flame retardant is red phosphorus, the nitrogen flame retardant is composed of melamine and melamine cyanuric acid, the weight ratio of the melamine to the melamine cyanuric acid is 1:3, and the inorganic flame retardant is aluminum hydroxide.
Specifically, the lubricant is calcium stearate, the toughening agent is at least one of polyolefin elastomer ethylene-propylene-octene copolymer, styrene-butadiene copolymer and hydrogenated styrene-butadiene-styrene block copolymer, and the smoke suppressant is at least one of zinc borate, molybdenum oxide and ferrocene.
Specifically, the antioxidant is a compound of a hindered amine antioxidant and a phosphite antioxidant.
Specifically, the phosphite antioxidant is one of trioctyl phosphite, tridecyl phosphite, tridodecyl phosphite and trihexadecyl phosphite.
Specifically, the composition also comprises the following components in parts by weight: 1-2 parts of an odor absorbent and 1-2 parts of a photocatalyst, wherein the halogen-free PP, the odor absorbent and the photocatalyst are in the following weight ratio: halogen-free PP: odor absorbent: the photocatalyst was 85:3: 3.
Specifically, the odor absorbent is at least one of activated carbon, porous silica, porous alumina and porous molecular sieve, and the photocatalyst is titanium dioxide.
Referring to fig. 1, the preparation method of the scratch-resistant halogen-free flame-retardant long-fiber PP provided by the application comprises the following steps:
1) weighing the following raw materials in parts by weight: halogen-free PP, a flame retardant, an antioxidant, a lubricant, a scratch resistant agent, a smoke suppressant and a toughening agent;
2) adding the raw materials in the step 1) into a high-speed mixer, and uniformly mixing, wherein the stirring speed of the high-speed mixer is 300r/min, and the stirring and mixing time is 30 min;
3) putting the raw materials mixed in the step 2) into a double-screw extruder for extrusion granulation, wherein the temperature of the double-screw extruder is set to be 190-220 ℃;
4) and (3) putting the granules obtained by extrusion in the step (3) into a drying box for drying, wherein the drying temperature is 70 ℃, and the drying time is 3 hours.
The application provides the following examples of a preparation method of scratch-resistant halogen-free flame-retardant long-fiber PP:
the first embodiment is as follows:
1) weighing the following raw materials in parts by weight: the flame retardant is characterized by comprising, by weight, 84 parts of halogen-free PP, 11 parts of a flame retardant, 1.5 parts of an antioxidant, 3.5 parts of a lubricant, 10 parts of a scratch resistant agent, 1 part of a smoke suppressant, 9 parts of a toughening agent, 1 part of an odor absorbent and 1 part of a photocatalyst, wherein the scratch resistant agent is composed of glass powder and silicone, and the weight ratio of the glass powder to the silicone is as follows: glass powder: 3:7, wherein the flame retardant consists of a phosphorus flame retardant, a nitrogen flame retardant and an inorganic flame retardant, and the weight ratio of the phosphorus flame retardant to the nitrogen flame retardant to the inorganic flame retardant is as follows: phosphorus flame retardant: nitrogen-based flame retardant: the inorganic flame retardant is 11:21:7, the phosphorus flame retardant is red phosphorus, the nitrogen flame retardant is composed of melamine and melamine cyanuric acid, the weight ratio of the melamine to the melamine cyanuric acid is 1:3, the inorganic flame retardant is aluminum hydroxide, the lubricant is calcium stearate, the flexibilizer is a polyolefin elastomer ethylene-propylene-octene copolymer, the smoke suppressant is zinc borate, the antioxidant is a compound of a hindered amine antioxidant and a phosphite ester antioxidant, the phosphite ester antioxidant is trioctyl phosphite, and the weight ratio of the halogen-free PP, the odor absorbent and the photocatalyst is as follows: halogen-free PP: odor absorbent: the photocatalyst is 85:3:3, the odor absorbent is activated carbon, and the photocatalyst is titanium dioxide;
2) adding the raw materials in the step 1) into a high-speed mixer, and uniformly mixing, wherein the stirring speed of the high-speed mixer is 300r/min, and the stirring and mixing time is 30 min;
3) putting the mixed raw materials in the step 2) into a double-screw extruder for extrusion granulation, wherein the temperature of the double-screw extruder is set to be 190 ℃;
4) and (3) putting the granules obtained by extrusion in the step (3) into a drying box for drying, wherein the drying temperature is 70 ℃, and the drying time is 3 hours.
Example two:
1) weighing the following raw materials in parts by weight: the flame retardant is characterized by comprising, by weight, 90 parts of halogen-free PP, 15 parts of a flame retardant, 2 parts of an antioxidant, 4.5 parts of a lubricant, 15 parts of a scratch resistant agent, 2 parts of a smoke suppressant, 10 parts of a toughening agent, 2 parts of an odor absorbent and 2 parts of a photocatalyst, wherein the scratch resistant agent is composed of glass powder and silicone, and the weight ratio of the glass powder to the silicone is as follows: glass powder: 3:7, wherein the flame retardant consists of a phosphorus flame retardant, a nitrogen flame retardant and an inorganic flame retardant, and the weight ratio of the phosphorus flame retardant to the nitrogen flame retardant to the inorganic flame retardant is as follows: phosphorus flame retardant: nitrogen-based flame retardant: the inorganic flame retardant is 11:21:7, the phosphorus flame retardant is red phosphorus, the nitrogen flame retardant is composed of melamine and melamine cyanuric acid, the weight ratio of the melamine to the melamine cyanuric acid is 1:3, the inorganic flame retardant is aluminum hydroxide, the lubricant is calcium stearate, the flexibilizer is styrene-butadiene copolymer, the smoke suppressant is molybdenum oxide, the antioxidant is a complex of hindered amine antioxidant and phosphite ester antioxidant, the phosphite ester antioxidant is tris (dodecyl alcohol), and the weight ratio of the halogen-free PP, the odor absorbent and the photocatalyst is as follows: halogen-free PP: odor absorbent: the photocatalyst is 85:3:3, the odor absorbent is porous alumina, and the photocatalyst is titanium dioxide;
2) adding the raw materials in the step 1) into a high-speed mixer, and uniformly mixing, wherein the stirring speed of the high-speed mixer is 300r/min, and the stirring and mixing time is 30 min;
3) putting the mixed raw materials in the step 2) into a double-screw extruder for extrusion and granulation, wherein the temperature of the double-screw extruder is set to be 220 ℃;
4) and (3) putting the granules obtained by extrusion in the step (3) into a drying box for drying, wherein the drying temperature is 70 ℃, and the drying time is 3 hours.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for a person skilled in the art, several modifications and additions can be made without departing from the method of the present invention, and these modifications and additions should also be considered as the protection scope of the present invention.
Claims (7)
1. The scratch-resistant halogen-free flame-retardant long-fiber PP is characterized by being prepared from the following raw materials in parts by weight: the flame retardant coating comprises, by weight, 84-90 parts of halogen-free PP, 11-15 parts of a flame retardant, 1.5-2 parts of an antioxidant, 3.5-4.5 parts of a lubricant, 10-15 parts of a scratch resistant agent, 1-2 parts of a smoke suppressant and 9-10 parts of a toughening agent; the scratch-resistant agent consists of glass powder and silicone, wherein the weight ratio of the glass powder to the silicone is as follows: glass powder: 3:7, wherein the flame retardant consists of a phosphorus flame retardant, a nitrogen flame retardant and an inorganic flame retardant, and the weight ratio of the phosphorus flame retardant to the nitrogen flame retardant to the inorganic flame retardant is as follows: phosphorus flame retardant: nitrogen-based flame retardant: the inorganic flame retardant is 11:21:7, the phosphorus flame retardant is red phosphorus, the nitrogen flame retardant is composed of melamine and melamine cyanuric acid, the weight ratio of the melamine to the melamine cyanuric acid is 1:3, and the inorganic flame retardant is aluminum hydroxide.
2. The scratch-resistant halogen-free flame-retardant long-fiber PP according to claim 1, wherein the lubricant is calcium stearate, the toughening agent is at least one of polyolefin elastomer ethylene-propylene-octene copolymer, styrene-butadiene copolymer and hydrogenated styrene-butadiene-styrene block copolymer, and the smoke suppressant is at least one of zinc borate, molybdenum oxide and ferrocene.
3. The scratch-resistant halogen-free flame-retardant long-fiber PP according to claim 1, wherein the antioxidant is a compound of a hindered amine antioxidant and a phosphite antioxidant.
4. The scratch-resistant halogen-free flame-retardant long-fiber PP according to claim 3, wherein the phosphite antioxidant is one of trioctyl phosphite, tridecyl phosphite, tridodecyl phosphite and trihexadecyl phosphite.
5. The scratch-resistant halogen-free flame-retardant long-fiber PP as claimed in claim 1, further comprising the following components in parts by weight: 1-2 parts of an odor absorbent and 1-2 parts of a photocatalyst, wherein the halogen-free PP, the odor absorbent and the photocatalyst are in the following weight ratio: halogen-free PP: odor absorbent: the photocatalyst was 85:3: 3.
6. The scratch-resistant halogen-free flame-retardant long-fiber PP according to claim 5, wherein the odor absorbent is at least one of activated carbon, porous silica, porous alumina and porous molecular sieve, and the photocatalyst is titanium dioxide.
7. The preparation method of the scratch-resistant halogen-free flame-retardant long-fiber PP as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
1) weighing the following raw materials in parts by weight: halogen-free PP, a flame retardant, an antioxidant, a lubricant, a scratch resistant agent, a smoke suppressant and a toughening agent;
2) adding the raw materials in the step 1) into a high-speed mixer, and uniformly mixing, wherein the stirring speed of the high-speed mixer is 300r/min, and the stirring and mixing time is 30 min;
3) putting the raw materials mixed in the step 2) into a double-screw extruder for extrusion granulation, wherein the temperature of the double-screw extruder is set to be 190-220 ℃;
4) and (3) putting the granules obtained by extrusion in the step (3) into a drying box for drying, wherein the drying temperature is 70 ℃, and the drying time is 3 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115594916A (en) * | 2022-09-29 | 2023-01-13 | 镇江市华银仪表电器有限公司（Cn） | Flame-retardant polymer cable material for electric traffic system and preparation method thereof |
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