CN115466471A - High-fluidity flame-retardant PVC material and preparation method thereof - Google Patents
High-fluidity flame-retardant PVC material and preparation method thereof Download PDFInfo
- Publication number
- CN115466471A CN115466471A CN202211282018.6A CN202211282018A CN115466471A CN 115466471 A CN115466471 A CN 115466471A CN 202211282018 A CN202211282018 A CN 202211282018A CN 115466471 A CN115466471 A CN 115466471A
- Authority
- CN
- China
- Prior art keywords
- parts
- flame retardant
- antioxidant
- flame
- pvc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-fluidity flame-retardant PVC material and a preparation method thereof, wherein the high-fluidity flame-retardant PVC material comprises the following raw materials in parts by weight: PVC resin A:20-30 parts of a solvent; PVC resin B:20-30 parts of a solvent; plasticizer: 20-25 parts; flame retardant: 15-20 parts of a solvent; a stabilizer: 3-4 parts; lubricant: 0.4-0.6 part; antioxidant: 0.2-0.4 part; the preparation method comprises the steps of uniformly mixing the materials, granulating, extruding and molding, and no other solvent is required to be added. The invention does not adopt halogen flame retardant for flame retardance, so that the PVC material prepared by the invention not only has good flame retardance, but also has the advantages of environmental protection, safety, smoke suppression, no toxicity and low price; and any other solvent is not needed to be added in the preparation process, so that the preparation process is simplified, and the energy and the time are saved.
Description
Technical Field
The invention relates to the field of PVC material preparation, in particular to a high-fluidity flame-retardant PVC material and a preparation method thereof.
Background
With the rapid development of industrialization in China, the service requirements of communication systems, monitoring and control are rapidly increased, and a large number of communication cables and equipment are widely applied. Meanwhile, with frequent occurrence of various accidents and disasters, optical cables, cables and the like often play the role of a fuse, so that the fire disaster is rapidly spread, valuable electronic instruments and equipment are damaged, the normal operation of the whole line is influenced, and even the whole line is paralyzed, and the loss of the disasters is enlarged.
The halogen-containing flame retardant (especially chlorine-based flame retardant and bromine-based flame retardant) is widely used for cable sheaths and plays a good flame-retardant role, but the sheath material adopting the halogen-containing flame retardant can generate a large amount of toxic and corrosive gas and smoke in the combustion process, so that people are suffocated and poisoned, and the harm of the halogen-containing flame retardant is more serious than that of the fire per se.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-fluidity flame-retardant PVC material and a preparation method thereof, so that the PVC material has low smoke and low toxicity and has a better flame-retardant effect.
The purpose of the invention is realized by the following technical scheme: a high-fluidity flame-retardant PVC material comprises the following raw materials in parts by weight:
PVC resin A:20-30 parts;
PVC resin B:20-30 parts of a solvent;
plasticizer: 20-25 parts;
flame retardant: 15-20 parts of a solvent;
a stabilizer: 3-4 parts;
lubricant: 0.4 to 0.6 portion;
antioxidant: 0.2 to 0.4 portion.
Further, the flame retardant is a mixture of magnesium-aluminum hydrotalcite subjected to surface modification treatment, melamine-coated ammonium polyphosphate and zinc borate; the weight ratio of the magnesium-aluminum hydrotalcite to the melamine-coated ammonium polyphosphate to the zinc borate is 5-6. The surface modification treatment of the flame retardant comprises the following specific steps:
s1, weighing magnesium aluminum hydrotalcite, melamine coated ammonium polyphosphate and zinc borate, m Magnesium aluminum hydrotalcite ：m Melamine coated ammonium polyphosphate ：m Zinc borate ＝5:1:1；
S2, weighing a silane coupling agent and diluting the silane coupling agent by white oil, wherein the weight of the silane coupling agent is 1.0-1.2% of the sum of the weight of the magnesium-aluminum hydrotalcite, the weight of the melamine-coated ammonium polyphosphate and the weight of the zinc borate; the amount of the white oil is 10-15% of the weight of the silane coupling agent;
s3, adding the magnesium-aluminum hydrotalcite weighed in the step S1, melamine-coated ammonium polyphosphate and zinc borate into a high-speed stirrer, preheating and stirring for 3-5min at the temperature of 90-100 ℃;
and S4, adding the silane coupling agent diluted by the white oil in the step S2 into the high-speed stirrer, continuously stirring for 5-8min, and discharging for later use.
The flame retardant is a mixture of magnesium-aluminum hydrotalcite and melamine-coated ammonium polyphosphate and zinc borate, wherein the magnesium-aluminum hydrotalcite has the advantages of aluminum hydroxide and magnesium hydroxide flame retardants, the initial decomposition temperature is 200-320 ℃, and the application range is wider; the ammonium polyphosphate and the zinc borate are used as flame retardant synergist of the magnesium-aluminum hydrotalcite, the halogen-free environment-friendly flame retardant for improving the flame retardant effect of the magnesium-aluminum hydrotalcite has the advantages of environmental protection, safety, smoke suppression, no toxicity and low price, can achieve the flame retardant effect when used for flame retardance, has the characteristics of low smoke and low toxicity, and is extremely low in harm to other surrounding environments, healthy and environment-friendly.
Further, the average polymerization degree of the PVC resin A is 981-1135, and the average polymerization degree of the PVC resin B is 741-845; the PVC resin A has better mechanical property but insufficient processability; the PVC resin B has good processability but poor mechanical property, and the mechanical property and the processability are both considered by adopting a mode of mixing the PVC resin B and the PVC resin B.
Further, the plasticizer is a mixture of dioctyl terephthalate and epoxidized soybean oil, and the weight ratio of the dioctyl terephthalate to the epoxidized soybean oil is 4:1; the dioctyl terephthalate is an environment-friendly plasticizer, the plasticizing efficiency is high, and the epoxidized soybean oil has the functions of both the plasticizer and the heat-resistant stabilizer.
Further, the stabilizer is a calcium-zinc composite stabilizer; the calcium zinc stabilizer does not contain heavy metals such as lead, cadmium and the like, and is an environment-friendly stabilizer.
Further, the lubricant is a mixture of polyethylene wax, stearic acid and calcium stearate; the weight ratio of the polyethylene wax to the stearic acid to the calcium stearate is 1:1:2; the melting point of the stearic acid is 67-72 ℃, the melting point of the polyethylene wax is 100-105 ℃, the melting point of the calcium stearate is 147-149 ℃, and the lubricating requirements of the PVC material from low temperature to high temperature in the preparation and processing processes are met by adopting a mode of combining three lubricants with different low, medium and high melting points, so that the fluidity and the processing performance of the material are effectively improved.
Further, the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168; the weight ratio of the antioxidant 1010 to the antioxidant 168 is 1:2; the antioxidant 1010 belongs to hindered phenol antioxidants, and can continuously play an antioxidant role for a long time by capturing free radicals generated in the degradation process of PVC; the antioxidant 168 phosphite esters are used as auxiliary antioxidants, and the antioxidant purpose is achieved by decomposing peroxide generated by further degrading PVC, so that the heat processing stability is provided.
A preparation method of a high-fluidity flame-retardant PVC material comprises the following steps:
s1, weighing: weighing 20-30 parts of PVC resin A, 20-30 parts of PVC resin B, 20-25 parts of plasticizer, 15-20 parts of flame retardant, 3-4 parts of stabilizer, 0.4-0.6 part of lubricant and 0.2-0.4 part of antioxidant in parts by weight for later use;
s2, mixing:
s21, adding the PVC resin, the flame retardant, the stabilizer, the lubricant and the antioxidant into a high-speed mixer according to the proportion in the step S1, and mixing for 1min at the temperature of 60-70 ℃ at 600-700 r/min to obtain a first mixed material;
s22, adding a plasticizer into the first mixed material according to the proportion in the step S1 under the stirring conditions of 80-90 ℃ and 600-700 r/min; continuously stirring at the rotating speed of 1100-1300 r/min, obtaining a second mixed material when the temperature of the material reaches 105-110 ℃, and discharging for later use;
s3, extruding and granulating: and putting the second mixed material into a double-stage granulator set for extrusion granulation to obtain the high-fluidity flame-retardant PVC material.
Further, in the step S3, during extrusion granulation, the rotating speed of the double-screw extruder is 260-320 r/min, and the temperature of the body of the double-screw extruder is controlled at 130-160 ℃; the feeding speed of the single screw extruder is 35-40 r/min, and the temperature of the single screw extruder body is controlled at 120-150 ℃.
The beneficial effects of the invention are:
(1) The high-fluidity flame-retardant PVC material is prepared by taking the PVC resin, the environment-friendly plasticizer and the environment-friendly flame retardant as main raw materials, does not contain a halogen flame retardant, is low in smoke and non-toxic during combustion, and is environment-friendly.
(2) The flame retardant selected by the invention is the surface-modified magnesium-aluminum hydrotalcite, which has the advantages of aluminum hydroxide and magnesium hydroxide flame retardants, and has the initial decomposition temperature of 200-320 ℃, and wider application range; meanwhile, the ammonium polyphosphate and the zinc borate are used as the flame-retardant synergist of the magnesium-aluminum hydrotalcite, so that the flame-retardant effect of the magnesium-aluminum hydrotalcite is improved, and compared with a halogen flame retardant, the flame-retardant agent has the advantages of excellent flame-retardant effect, environmental friendliness, safety, smoke suppression, no toxicity, low price, little harm to other surrounding environments, and health and environmental protection.
(3) According to the high-fluidity flame-retardant PVC material and the preparation method thereof, raw materials do not contain any solvent, and the mixing and extrusion molding are continuously carried out, so that the production process is optimized, and the high-fluidity flame-retardant PVC material has social significance of energy conservation and environmental protection; the obtained low-smoke halogen-free flame-retardant communication cable sheath material has excellent flame retardance, processing resistance and insulating property, and the preparation method is environment-friendly, simple in process, energy-saving and time-saving.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to examples, but the scope of the present invention is not limited to the following.
Example 1
A high-fluidity flame-retardant PVC material is prepared from PVC resin A:20 parts of PVC resin B:30 parts of plasticizer: 25 parts of flame retardant: 20 parts of stabilizer: 4 parts of lubricant: 0.5 part of antioxidant: 0.3 part of a stabilizer; the flame retardant is a mixture of magnesium-aluminum hydrotalcite subjected to surface modification treatment, melamine-coated ammonium polyphosphate and zinc borate; the weight ratio of the magnesium-aluminum hydrotalcite to the melamine-coated ammonium polyphosphate to the zinc borate is 5; the average polymerization degree of the PVC resin A is 981-1135, and the average polymerization degree of the PVC resin B is 741-845; the plasticizer is a mixture of dioctyl terephthalate and epoxidized soybean oil, and the weight ratio of the dioctyl terephthalate to the epoxidized soybean oil is 4:1; the stabilizer is a calcium-zinc composite stabilizer; the lubricant is a mixture of polyethylene wax, stearic acid and calcium stearate; the weight ratio of the polyethylene wax to the stearic acid to the calcium stearate is 1:1:2; the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168; the weight ratio of the antioxidant 1010 to the antioxidant 168 is 1:2;
the preparation method comprises the following steps:
s1, weighing: weighing 20 parts of PVC resin A, 30 parts of PVC resin B, 25 parts of plasticizer, 20 parts of flame retardant, 4 parts of stabilizer, 0.5 part of lubricant and 0.3 part of antioxidant for later use;
s2, mixing:
s21, adding the PVC resin, the flame retardant, the stabilizer, the lubricant and the antioxidant into a high-speed mixer according to the proportion in the step S1, and mixing for 1min at the temperature of 60-70 ℃ at 600-700 r/min to obtain a first mixed material;
s22, adding a plasticizer into the first mixed material according to the proportion in the step S1 under the stirring condition of 80-90 ℃ and 600-700 r/min; continuously stirring at the rotating speed of 1100-1300 r/min, obtaining a second mixed material when the temperature of the material reaches 105-110 ℃, and discharging for later use;
s3, extruding and granulating: putting the second mixed material into a double-stage granulator set for extrusion granulation to obtain a high-fluidity flame-retardant PVC material; when extruding and granulating, the rotating speed of the double-screw extruder is 260-320 r/min, and the temperature of the body of the double-screw extruder is controlled at 130-160 ℃; the feeding speed of the single screw extruder is 35-40 r/min, and the temperature of the single screw extruder body is controlled at 120-150 ℃.
Example 2
A high-fluidity flame-retardant PVC material is prepared from PVC resin A:25 parts of PVC resin B:25 parts of plasticizer: 25 parts of flame retardant: 20 parts of a stabilizer: 4 parts of lubricant: 0.5 part of antioxidant: 0.3 part of a stabilizer; the flame retardant is a mixture of magnesium-aluminum hydrotalcite subjected to surface modification treatment, melamine-coated ammonium polyphosphate and zinc borate; the weight ratio of the magnesium-aluminum hydrotalcite to the melamine-coated ammonium polyphosphate to the zinc borate is (5); the average polymerization degree of the PVC resin A is 981-1135, and the average polymerization degree of the PVC resin B is 741-845; the plasticizer is a mixture of dioctyl terephthalate and epoxidized soybean oil, and the weight ratio of the dioctyl terephthalate to the epoxidized soybean oil is 4:1; the stabilizer is a calcium-zinc composite stabilizer; the lubricant is a mixture of polyethylene wax, stearic acid and calcium stearate; the weight ratio of the polyethylene wax to the stearic acid to the calcium stearate is 1:1:2; the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168; the weight ratio of the antioxidant 1010 to the antioxidant 168 is 1:2;
the preparation method comprises the following steps:
s1, weighing: weighing 25 parts of PVC resin A, 25 parts of PVC resin B, 25 parts of plasticizer, 20 parts of flame retardant, 4 parts of stabilizer, 0.5 part of lubricant and 0.3 part of antioxidant for later use;
s2, mixing:
s21, adding the PVC resin, the flame retardant, the stabilizer, the lubricant and the antioxidant into a high-speed mixer according to the proportion in the step S1, and mixing for 1min at the temperature of 60-70 ℃ at 600-700 r/min to obtain a first mixed material;
s22, adding a plasticizer into the first mixed material according to the proportion in the step S1 under the stirring conditions of 80-90 ℃ and 600-700 r/min; continuously stirring at the rotating speed of 1100-1300 r/min, obtaining a second mixed material when the temperature of the material reaches 105-110 ℃, and discharging for later use;
s3, extruding and granulating: putting the second mixed material into a double-stage granulator set for extrusion granulation to obtain a high-fluidity flame-retardant PVC material; when extruding and granulating, the rotating speed of the double-screw extruder is 260-320 r/min, and the temperature of the body of the double-screw extruder is controlled at 130-160 ℃; the feeding speed of the single screw extruder is 35-40 r/min, and the temperature of the single screw extruder body is controlled at 120-150 ℃.
Example 3
A high-fluidity flame-retardant PVC material is prepared from PVC resin A:30 parts of PVC resin B:20 parts of plasticizer: 25 parts of flame retardant: 20 parts of a stabilizer: 4 parts of lubricant: 0.5 part of antioxidant: 0.3 part of a stabilizer; the flame retardant is a mixture of magnesium-aluminum hydrotalcite subjected to surface modification treatment, melamine-coated ammonium polyphosphate and zinc borate; the weight ratio of the magnesium-aluminum hydrotalcite to the melamine-coated ammonium polyphosphate to the zinc borate is 5; the average polymerization degree of the PVC resin A is 981-1135, and the average polymerization degree of the PVC resin B is 741-845; the plasticizer is a mixture of dioctyl terephthalate and epoxidized soybean oil, and the weight ratio of the dioctyl terephthalate to the epoxidized soybean oil is 4:1; the stabilizer is a calcium-zinc composite stabilizer; the lubricant is a mixture of polyethylene wax, stearic acid and calcium stearate; the weight ratio of the polyethylene wax to the stearic acid to the calcium stearate is 1:1:2; the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168; the weight ratio of the antioxidant 1010 to the antioxidant 168 is 1:2;
the preparation method comprises the following steps:
s1, weighing: weighing 30 parts of PVC resin A, 20 parts of PVC resin B, 25 parts of plasticizer, 20 parts of flame retardant, 4 parts of stabilizer, 0.5 part of lubricant and 0.3 part of antioxidant for later use;
s2, mixing:
s21, adding the PVC resin, the flame retardant, the stabilizer, the lubricant and the antioxidant into a high-speed mixer according to the proportion in the step S1, and mixing for 1min at the temperature of 60-70 ℃ at 600-700 r/min to obtain a first mixed material;
s22, adding a plasticizer into the first mixed material according to the proportion in the step S1 under the stirring condition of 80-90 ℃ and 600-700 r/min; continuously stirring at the rotating speed of 1100-1300 r/min, obtaining a second mixed material when the temperature of the materials reaches 105-110 ℃, and discharging for later use;
s3, extruding and granulating: putting the second mixed material into a double-stage granulator set for extrusion granulation to obtain a high-fluidity flame-retardant PVC material; when extruding and granulating, the rotating speed of the double-screw extruder is 260-320 r/min, and the temperature of the body of the double-screw extruder is controlled at 130-160 ℃; the feeding speed of the single screw extruder is 35-40 r/min, and the temperature of the single screw extruder body is controlled at 120-150 ℃.
Example 4
A high-fluidity flame-retardant PVC material is prepared from PVC resin A:30 parts of PVC resin B:20 parts of plasticizer: 22 parts of flame retardant: 15 parts of stabilizer: 4 parts of lubricant: 0.5 part of antioxidant: 0.3 part of a stabilizer; the flame retardant is a mixture of magnesium-aluminum hydrotalcite subjected to surface modification treatment, melamine-coated ammonium polyphosphate and zinc borate; the weight ratio of the magnesium-aluminum hydrotalcite to the melamine-coated ammonium polyphosphate to the zinc borate is 5; the average polymerization degree of the PVC resin A is 981-1135, and the average polymerization degree of the PVC resin B is 741-845; the plasticizer is a mixture of dioctyl terephthalate and epoxidized soybean oil, and the weight ratio of the dioctyl terephthalate to the epoxidized soybean oil is 4:1; the stabilizer is a calcium-zinc composite stabilizer; the lubricant is a mixture of polyethylene wax, stearic acid and calcium stearate; the weight ratio of the polyethylene wax to the stearic acid to the calcium stearate is 1:1:2; the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168; the weight ratio of the antioxidant 1010 to the antioxidant 168 is 1:2;
the preparation method comprises the following steps:
s1, weighing: weighing 30 parts of PVC resin A, 20 parts of PVC resin B, 22 parts of plasticizer, 15 parts of flame retardant, 4 parts of stabilizer, 0.5 part of lubricant and 0.3 part of antioxidant for later use;
s2, mixing:
s21, adding the PVC resin, the flame retardant, the stabilizer, the lubricant and the antioxidant into a high-speed mixer according to the proportion in the step S1, and mixing for 1min at the temperature of 60-70 ℃ at 600-700 r/min to obtain a first mixed material;
s22, adding a plasticizer into the first mixed material according to the proportion in the step S1 under the stirring conditions of 80-90 ℃ and 600-700 r/min; continuously stirring at the rotating speed of 1100-1300 r/min, obtaining a second mixed material when the temperature of the material reaches 105-110 ℃, and discharging for later use;
s3, extruding and granulating: putting the second mixed material into a double-stage granulator set for extrusion granulation to obtain a high-fluidity flame-retardant PVC material; when extruding and granulating, the rotating speed of the double-screw extruder is 260-320 r/min, and the temperature of the body of the double-screw extruder is controlled at 130-160 ℃; the feeding speed of the single screw extruder is 35-40 r/min, and the temperature of the single screw extruder body is controlled at 120-150 ℃.
The materials prepared in examples 1 to 4 were tested for their properties, and the results are shown in Table 1.
Table 1: high-fluidity flame-retardant PVC material performance test result
As can be seen from the table 1, the oxygen index of the PVC material prepared by the invention is higher than 34%, and the PVC material has excellent flame retardant property; and the smoke generated during combustion is low in amount, low in toxicity, basically harmless to the environment and excellent in mechanical property.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The high-fluidity flame-retardant PVC material is characterized by comprising the following raw materials in parts by weight:
PVC resin A:20-30 parts of a solvent;
PVC resin B:20-30 parts of a solvent;
plasticizer: 20-25 parts;
flame retardant: 15-20 parts of a solvent;
a stabilizer: 3-4 parts;
lubricant: 0.4 to 0.6 portion;
antioxidant: 0.2 to 0.4 portion.
2. A high flow flame retardant PVC material in accordance with claim 1, characterized in that: the flame retardant is a mixture of magnesium-aluminum hydrotalcite subjected to surface modification treatment, melamine-coated ammonium polyphosphate and zinc borate.
3. A high flow flame retardant PVC material in accordance with claim 1, characterized by: the average polymerization degree of the PVC resin A is 981-1135, and the average polymerization degree of the PVC resin B is 741-845.
4. A high flow flame retardant PVC material in accordance with claim 1, characterized by: the plasticizer is a mixture of dioctyl terephthalate and epoxidized soybean oil.
5. A high flow flame retardant PVC material in accordance with claim 1, characterized by: the stabilizer is a calcium-zinc composite stabilizer.
6. A high flow flame retardant PVC material in accordance with claim 1, characterized by: the lubricant is a mixture of polyethylene wax, stearic acid and calcium stearate.
7. A high flow flame retardant PVC material in accordance with claim 1, characterized by: the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168.
8. The preparation method of the high-fluidity flame-retardant PVC material is characterized by comprising the following steps of:
s1, weighing: weighing 20-30 parts of PVC resin A, 20-30 parts of PVC resin B, 20-25 parts of plasticizer, 15-20 parts of flame retardant, 3-4 parts of stabilizer, 0.4-0.6 part of lubricant and 0.2-0.4 part of antioxidant for later use;
s2, mixing:
s21, adding the PVC resin, the flame retardant, the stabilizer, the lubricant and the antioxidant into a high-speed mixer according to the proportion in the step S1, and mixing for 1min at the temperature of 60-70 ℃ at 600-700 r/min to obtain a first mixed material;
s22, adding a plasticizer into the first mixed material according to the proportion in the step S1 under the stirring conditions of 80-90 ℃ and 600-700 r/min; continuously stirring at the rotating speed of 1100-1300 r/min, obtaining a second mixed material when the temperature of the material reaches 105-110 ℃, and discharging for later use;
s3, extruding and granulating: and putting the second mixed material into a double-stage granulator set for extrusion granulation to obtain the high-fluidity flame-retardant PVC material.
9. The method for preparing high-fluidity flame-retardant PVC material according to claim 8, characterized in that: in the step S3, during extrusion granulation, the rotating speed of the double-screw extruder is 260-320 r/min, and the temperature of the body of the double-screw extruder is controlled at 130-160 ℃; the feeding speed of the single screw extruder is 35-40 r/min, and the temperature of the single screw extruder body is controlled at 120-150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211282018.6A CN115466471A (en) | 2022-10-19 | 2022-10-19 | High-fluidity flame-retardant PVC material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211282018.6A CN115466471A (en) | 2022-10-19 | 2022-10-19 | High-fluidity flame-retardant PVC material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115466471A true CN115466471A (en) | 2022-12-13 |
Family
ID=84336626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211282018.6A Pending CN115466471A (en) | 2022-10-19 | 2022-10-19 | High-fluidity flame-retardant PVC material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115466471A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4298517A (en) * | 1978-12-22 | 1981-11-03 | Pennwalt Corporation | Tetrahalophthalates as flame retardant plasticizers for halogenated resins |
| JPH06179787A (en) * | 1991-12-06 | 1994-06-28 | Shin Etsu Polymer Co Ltd | Polyvinyl chloride resin composition for food packaging |
| WO2004046236A1 (en) * | 2002-11-15 | 2004-06-03 | Lamberti Spa | Thermally stabilised pvc compositions |
| RU2012108753A (en) * | 2012-03-07 | 2013-09-20 | Закрытое акционерное общество "Кабельный завод "Кавказкабель" | ELECTRIC INSULATION POLYMER COMPOSITION |
| CN107207865A (en) * | 2015-03-20 | 2017-09-26 | Lg化学株式会社 | Plasticizer composition, resin combination and the method for preparing it |
| CN111234411A (en) * | 2020-02-24 | 2020-06-05 | 广州启光智造技术服务股份有限公司 | Cold-resistant cable outer sheath and cable |
| WO2021129216A1 (en) * | 2019-12-28 | 2021-07-01 | 江苏达胜高聚物股份有限公司 | Pvc cable material and preparation method therefor |
| CN113174114A (en) * | 2021-05-27 | 2021-07-27 | 长治市宏瑞祥环保科技有限公司 | Method for preparing polyvinyl chloride carbon plastic product by using coal gangue |
| CN113524833A (en) * | 2021-07-19 | 2021-10-22 | 四川新明塑业有限公司 | Mining PVC-O pipe and preparation method thereof |
| CN113881127A (en) * | 2021-10-08 | 2022-01-04 | 四川天邑康和通信股份有限公司 | Low-smoke halogen-free flame-retardant communication cable sheath material and preparation method thereof |
| CN114479305A (en) * | 2020-10-27 | 2022-05-13 | 陈燕 | Environment-friendly flame-retardant polyvinyl chloride cable material and preparation method thereof |
-
2022
- 2022-10-19 CN CN202211282018.6A patent/CN115466471A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4298517A (en) * | 1978-12-22 | 1981-11-03 | Pennwalt Corporation | Tetrahalophthalates as flame retardant plasticizers for halogenated resins |
| JPH06179787A (en) * | 1991-12-06 | 1994-06-28 | Shin Etsu Polymer Co Ltd | Polyvinyl chloride resin composition for food packaging |
| WO2004046236A1 (en) * | 2002-11-15 | 2004-06-03 | Lamberti Spa | Thermally stabilised pvc compositions |
| RU2012108753A (en) * | 2012-03-07 | 2013-09-20 | Закрытое акционерное общество "Кабельный завод "Кавказкабель" | ELECTRIC INSULATION POLYMER COMPOSITION |
| CN107207865A (en) * | 2015-03-20 | 2017-09-26 | Lg化学株式会社 | Plasticizer composition, resin combination and the method for preparing it |
| WO2021129216A1 (en) * | 2019-12-28 | 2021-07-01 | 江苏达胜高聚物股份有限公司 | Pvc cable material and preparation method therefor |
| CN111234411A (en) * | 2020-02-24 | 2020-06-05 | 广州启光智造技术服务股份有限公司 | Cold-resistant cable outer sheath and cable |
| CN114479305A (en) * | 2020-10-27 | 2022-05-13 | 陈燕 | Environment-friendly flame-retardant polyvinyl chloride cable material and preparation method thereof |
| CN113174114A (en) * | 2021-05-27 | 2021-07-27 | 长治市宏瑞祥环保科技有限公司 | Method for preparing polyvinyl chloride carbon plastic product by using coal gangue |
| CN113524833A (en) * | 2021-07-19 | 2021-10-22 | 四川新明塑业有限公司 | Mining PVC-O pipe and preparation method thereof |
| CN113881127A (en) * | 2021-10-08 | 2022-01-04 | 四川天邑康和通信股份有限公司 | Low-smoke halogen-free flame-retardant communication cable sheath material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| XIAODONG WANG，等: "Effect of hydrotalcite on the thermal stability, mechanical properties, rheology and flame retardance of poly(vinyl chloride)", 《POLYMER INTERNATIONAL》 * |
| 谢雯，等: "聚氯乙烯(PVC)阻燃抑烟的研究进展", 《塑料助剂》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110218401B (en) | Flame-retardant smoke-inhibiting soft polyvinyl chloride composite material with good mechanical property and preparation method thereof | |
| CN112321934A (en) | Irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for 150 ℃ American standard electronic wire and preparation method thereof | |
| CN101486814B (en) | Method for producing low-smoke halogen-free non-nitrogen flame-retardant heat-shrinkable material sheathed tube and casing tube | |
| CN111393773A (en) | Environment-friendly high-flame-retardant polyvinyl chloride cable sheath material and preparation method thereof | |
| CN111621085A (en) | B1-grade special high-flame-retardant low-smoke halogen-free cable material and preparation method thereof | |
| WO2021114752A1 (en) | Flame-retardant polyethylene cable material and preparation method therefor | |
| CN114656729A (en) | High-flame-retardant low-temperature-resistant polyvinyl chloride composition and preparation method and application thereof | |
| CN110591201B (en) | Heat-resistant 150 ℃ irradiation crosslinked polyolefin material for automobile wire and preparation method thereof | |
| CN113956588B (en) | Anti-aging flame-retardant PVC material, preparation method and application thereof in wires or cables | |
| CN103554639A (en) | Production method of environment-friendly type halogen-free flame-retardant wire and cable | |
| CN114525000A (en) | Flame-retardant polyvinyl chloride cable material and preparation method thereof | |
| CN113248813A (en) | Efficient halogen-free flame-retardant cable material and preparation method thereof | |
| CN112961424A (en) | Halogen-free flame-retardant fireproof cable and preparation method thereof | |
| CN115466471A (en) | High-fluidity flame-retardant PVC material and preparation method thereof | |
| CN116589782A (en) | Thermosetting low-smoke halogen-free oil-resistant polyolefin sheath material and preparation method thereof | |
| CN113881127B (en) | Low-smoke halogen-free flame-retardant communication cable sheath material and preparation method thereof | |
| CN113462068B (en) | Flame-retardant oxygen-barrier layer material and preparation method thereof | |
| CN112143128B (en) | Visual PVC-U flame-retardant pipe groove and preparation method thereof | |
| CN115449144A (en) | Irradiation crosslinking type halogen-free flame-retardant low-specific-gravity cable material and preparation method thereof | |
| CN114015226A (en) | Flame-retardant high-temperature-resistant oil-resistant flexible cable composite material and preparation method thereof | |
| CN111438836A (en) | Preparation process of low-smoke halogen-free flame-retardant PVC cable sheath material | |
| CN115895142B (en) | PVC cable material for 5G photoelectric integrated cable and preparation method and application thereof | |
| CN117511177B (en) | Halogen-free flame-retardant polyurethane cable outer sheath material | |
| CN114410051B (en) | Insulation coating composite material and preparation method and application thereof | |
| CN108690257A (en) | The non-crosslinked polyolefin composition of heat-resistant halogen-free low-smoke and flame retardant for cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |