CN110804246A - Preparation method of high-conductivity flame-retardant polypropylene special material - Google Patents
Preparation method of high-conductivity flame-retardant polypropylene special material Download PDFInfo
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- CN110804246A CN110804246A CN201911168135.8A CN201911168135A CN110804246A CN 110804246 A CN110804246 A CN 110804246A CN 201911168135 A CN201911168135 A CN 201911168135A CN 110804246 A CN110804246 A CN 110804246A
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- polypropylene
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- retardant
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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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- 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
- C08L23/14—Copolymers of propene
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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
- C08L2201/02—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
- 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
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a preparation method of a high-conductivity flame-retardant polypropylene special material, which comprises the following components in parts by weight: 10-75% of homopolymerized polypropylene, 10-70% of copolymerized polypropylene, 1-20% of flame retardant, 0.05-1% of flame retardant synergist, 3-10% of conductive agent, 0.1-0.5% of antioxidant, 1-5% of toughening agent, 0.2-1% of dispersant and 0.1-1% of lubricant, and 1.
Description
Technical Field
The invention relates to the field of materials, in particular to a preparation method of a high-conductivity flame-retardant polypropylene special material.
Background
Polypropylene (PP) is a thermoplastic synthetic resin with excellent performance, and has chemical resistance, heat resistance, electrical insulation, high-strength mechanical performance, good high-wear-resistance processing performance and the like, so that polypropylene is widely developed and applied in various fields such as machinery, automobiles, electronic and electric appliances, buildings, textiles, packaging, agriculture, forestry, fishery, food industry and the like, but polypropylene has high insulation, static charges are easy to accumulate, the static charges are harmful to electronic and electric appliance parts, and other products need plastics with an electromagnetic shielding function and also need to be subjected to conductive modification; polypropylene has poor flame retardant properties, low oxygen index and easy combustion, so that in many application fields, flame retardant modification is required to improve safety performance.
At present, conductive modified PP and flame-retardant modified PP are very common, but the modified PP with both conductive performance and flame retardant performance is still difficult, because conductive PP is modified by adopting conductive carbon black mostly, and the conductive carbon black has obvious resistance to a flame retardant, the flame retardant effect of the flame retardant is greatly influenced, the flame retardant needs to be added in a large amount, and the cost is high.
Disclosure of Invention
The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.
The preparation method of the high-conductivity flame-retardant polypropylene special material comprises the following components in parts by weight: 10-75% of homopolymerized polypropylene, 10-70% of copolymerized polypropylene, 1-20% of flame retardant, 0.05-1% of flame retardant synergist, 3-10% of conductive agent, 0.1-0.5% of antioxidant, 1-5% of toughening agent, 0.2-1% of dispersant and 0.1-1% of lubricant, and the following preparation steps are adopted:
the method comprises the following steps: mixing raw materials: putting the conductive agent, the flame retardant, the flame-retardant synergist, the dispersant, the lubricant and the antioxidant into a high-speed mixer for full mixing to obtain a raw material stock solution;
step two: preparing a polypropylene modified raw material: adding the raw material stock solution, the homo-polypropylene and the co-polypropylene into a high-speed mixer together for high-speed mixing again to obtain a polypropylene modified raw material;
step three: putting the polypropylene modified raw material into a feeder, adding the polypropylene modified raw material into a double-screw extruder through the feeder, and performing melting, shearing, extruding, granulating and drying on the double-screw extruder to obtain a conductive flame-retardant polypropylene raw material;
step four: adding the conductive flame-retardant polypropylene raw material into vacuum equipment, effectively distributing the conductive flame-retardant polypropylene raw material through the vacuum equipment to reduce the density of the conductive flame-retardant polypropylene raw material, and filtering large particles and agglomerated particles in the material by using a filtering device to obtain the conductive flame-retardant polypropylene material.
As a further scheme of the invention: in the first step, the mixing time of the high-speed mixing is 2-10 min.
As a further scheme of the invention: in the second step, the mixing time of the high-speed mixing is 1-5 min.
As a further scheme of the invention: in the third step, the processing temperature range of extrusion is 180-220 ℃.
As a further scheme of the invention: the composition comprises the following components in parts by weight: 51% of homopolymerized polypropylene, 30.6% of copolymerized polypropylene, 5% of flame retardant, 0.1% of flame retardant synergist, 2% of conductive agent, 0.2% of antioxidant, 5% of toughening agent, 0.3% of dispersant and 0.8% of lubricant.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-conductivity flame-retardant polypropylene special material prepared by the invention has the advantages of simple preparation process, short production period, excellent product conductivity and good flame-retardant effect.
2. The special material for flame-retardant polypropylene prepared by the invention has lower density, less addition of flame retardant and conductive additive, small influence on the physical and mechanical properties of polypropylene and obvious cost advantage.
3. The product prepared by the invention has good flame retardant effect, the material can meet the oxygen index of more than 27%, the density of the product is low, and the product cannot be separated out or discolored.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
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.
In the embodiment of the invention, the preparation method of the high-conductivity flame-retardant polypropylene special material comprises the following components in parts by weight: 10-75% of homopolymerized polypropylene, 10-70% of copolymerized polypropylene, 1-20% of flame retardant, 0.05-1% of flame retardant synergist, 3-10% of conductive agent, 0.1-0.5% of antioxidant, 1-5% of toughening agent, 0.2-1% of dispersant and 0.1-1% of lubricant, and the following preparation steps are adopted:
the method comprises the following steps: mixing raw materials: putting the conductive agent, the flame retardant, the flame-retardant synergist, the dispersant, the lubricant and the antioxidant into a high-speed mixer for full mixing to obtain a raw material stock solution;
step two: preparing a polypropylene modified raw material: adding the raw material stock solution, the homo-polypropylene and the co-polypropylene into a high-speed mixer together for high-speed mixing again to obtain a polypropylene modified raw material;
step three: putting the polypropylene modified raw material into a feeder, adding the polypropylene modified raw material into a double-screw extruder through the feeder, and performing melting, shearing, extruding, granulating and drying on the double-screw extruder to obtain a conductive flame-retardant polypropylene raw material;
step four: adding the conductive flame-retardant polypropylene raw material into vacuum equipment, effectively distributing the conductive flame-retardant polypropylene raw material through the vacuum equipment to reduce the density of the conductive flame-retardant polypropylene raw material, and filtering large particles and agglomerated particles in the material by using a filtering device to obtain the conductive flame-retardant polypropylene material.
In the first step, the mixing time of the high-speed mixing is 2-10 min.
In the second step, the mixing time of the high-speed mixing is 1-5 min.
In the third step, the processing temperature range of extrusion is 180-220 ℃.
The test result of the high-conductivity flame-retardant polypropylene material is as follows:
| performance index | The result of the detection |
| Density (g/cm)3) | 1.01 |
| Melt index (g/10min) | 25 |
| Tensile Strength (MPa) | 26 |
| Elongation at Break (%) | 40 |
| Flexural Strength (MPa) | 36 |
| Flexural modulus (MPa) | 1700 |
| Notched impact Strength (KJ/m)2) | 4 |
| Heat distortion temperature (. degree. C.) | 120 |
| Oxygen index (%) | 27 |
| Volume resistance omega cm | 103-105 |
The first embodiment is as follows:
the preparation method of the high-conductivity flame-retardant polypropylene special material comprises the following components in parts by weight: 51% of homopolymerized polypropylene, 30.6% of copolymerized polypropylene, 5% of flame retardant, 0.1% of flame retardant synergist, 2% of conductive agent, 0.2% of antioxidant, 5% of toughening agent, 0.3% of dispersing agent and 0.8% of lubricant, and the following preparation steps are adopted:
the method comprises the following steps: mixing raw materials: putting the conductive agent, the flame retardant, the flame-retardant synergist, the dispersant, the lubricant and the antioxidant into a high-speed mixer for full mixing to obtain a raw material stock solution;
step two: preparing a polypropylene modified raw material: adding the raw material stock solution, the homo-polypropylene and the co-polypropylene into a high-speed mixer together for high-speed mixing again to obtain a polypropylene modified raw material;
step three: putting the polypropylene modified raw material into a feeder, adding the polypropylene modified raw material into a double-screw extruder through the feeder, and performing melting, shearing, extruding, granulating and drying on the double-screw extruder to obtain a conductive flame-retardant polypropylene raw material;
step four: adding the conductive flame-retardant polypropylene raw material into vacuum equipment, effectively distributing the conductive flame-retardant polypropylene raw material through the vacuum equipment to reduce the density of the conductive flame-retardant polypropylene raw material, and filtering large particles and agglomerated particles in the material by using a filtering device to obtain the conductive flame-retardant polypropylene material.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. The preparation method of the high-conductivity flame-retardant polypropylene special material is characterized by comprising the following components in parts by weight: 10-75% of homopolymerized polypropylene, 10-70% of copolymerized polypropylene, 1-20% of flame retardant, 0.05-1% of flame retardant synergist, 3-10% of conductive agent, 0.1-0.5% of antioxidant, 1-5% of toughening agent, 0.2-1% of dispersant and 0.1-1% of lubricant, and the following preparation steps are adopted:
the method comprises the following steps: mixing raw materials: putting the conductive agent, the flame retardant, the flame-retardant synergist, the dispersant, the lubricant and the antioxidant into a high-speed mixer for full mixing to obtain a raw material stock solution;
step two: preparing a polypropylene modified raw material: adding the raw material stock solution, the homo-polypropylene and the co-polypropylene into a high-speed mixer together for high-speed mixing again to obtain a polypropylene modified raw material;
step three: putting the polypropylene modified raw material into a feeder, adding the polypropylene modified raw material into a double-screw extruder through the feeder, and performing melting, shearing, extruding, granulating and drying on the double-screw extruder to obtain a conductive flame-retardant polypropylene raw material;
step four: adding the conductive flame-retardant polypropylene raw material into vacuum equipment, effectively distributing the conductive flame-retardant polypropylene raw material through the vacuum equipment to reduce the density of the conductive flame-retardant polypropylene raw material, and filtering large particles and agglomerated particles in the material by using a filtering device to obtain the conductive flame-retardant polypropylene material.
2. The method for preparing the special material for the highly conductive flame retardant polypropylene according to claim 1, wherein in the first step, the mixing time of the high-speed mixing is 2-10 min.
3. The method for preparing the special material for the highly conductive flame retardant polypropylene according to claim 1, wherein in the second step, the mixing time of the high-speed mixing is 1-5 min.
4. The method for preparing the special material for highly conductive and flame retardant polypropylene as claimed in claim 1, wherein in the third step, the extrusion temperature is in the range of 180-220 ℃.
5. The preparation method of the special high-conductivity flame-retardant polypropylene material according to claim 1, wherein the special high-conductivity flame-retardant polypropylene material comprises the following components in parts by weight: 51% of homopolymerized polypropylene, 30.6% of copolymerized polypropylene, 5% of flame retardant, 0.1% of flame retardant synergist, 2% of conductive agent, 0.2% of antioxidant, 5% of toughening agent, 0.3% of dispersant and 0.8% of lubricant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911168135.8A CN110804246A (en) | 2019-11-25 | 2019-11-25 | Preparation method of high-conductivity flame-retardant polypropylene special material |
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| CN201911168135.8A CN110804246A (en) | 2019-11-25 | 2019-11-25 | Preparation method of high-conductivity flame-retardant polypropylene special material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521687A (en) * | 2020-12-03 | 2021-03-19 | 苏州盖威汽车配件有限公司 | Flame-retardant plastic particle and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102115559A (en) * | 2010-01-04 | 2011-07-06 | 佛山市顺德区威林工程塑料有限公司 | Preparation method of high-gloss high-rigidity no-precipitate environment-friendly flame-retardant polypropylene |
| CN103030879A (en) * | 2011-09-29 | 2013-04-10 | 合肥杰事杰新材料股份有限公司 | Environment-friendly flame retardance permanent antistatic polypropylene material and preparation method of environment-friendly flame retardance permanent antistatic polypropylene material |
| CN104140598A (en) * | 2014-08-25 | 2014-11-12 | 公安部四川消防研究所 | Halogen-free flame-retardance anti-static polypropylene composite material and preparation methods thereof |
| CN107383623A (en) * | 2017-07-17 | 2017-11-24 | 佛山杰致信息科技有限公司 | Polypropylene flameretardant material and preparation method thereof |
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- 2019-11-25 CN CN201911168135.8A patent/CN110804246A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115559A (en) * | 2010-01-04 | 2011-07-06 | 佛山市顺德区威林工程塑料有限公司 | Preparation method of high-gloss high-rigidity no-precipitate environment-friendly flame-retardant polypropylene |
| CN103030879A (en) * | 2011-09-29 | 2013-04-10 | 合肥杰事杰新材料股份有限公司 | Environment-friendly flame retardance permanent antistatic polypropylene material and preparation method of environment-friendly flame retardance permanent antistatic polypropylene material |
| CN104140598A (en) * | 2014-08-25 | 2014-11-12 | 公安部四川消防研究所 | Halogen-free flame-retardance anti-static polypropylene composite material and preparation methods thereof |
| CN107383623A (en) * | 2017-07-17 | 2017-11-24 | 佛山杰致信息科技有限公司 | Polypropylene flameretardant material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521687A (en) * | 2020-12-03 | 2021-03-19 | 苏州盖威汽车配件有限公司 | Flame-retardant plastic particle and preparation method thereof |
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Application publication date: 20200218 |
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