CN111690205A - Novel flame-retardant modified plastic and production process thereof - Google Patents
Novel flame-retardant modified plastic and production process thereof Download PDFInfo
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- CN111690205A CN111690205A CN202010683292.9A CN202010683292A CN111690205A CN 111690205 A CN111690205 A CN 111690205A CN 202010683292 A CN202010683292 A CN 202010683292A CN 111690205 A CN111690205 A CN 111690205A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 239000003063 flame retardant Substances 0.000 title claims abstract description 89
- 239000004033 plastic Substances 0.000 title claims abstract description 68
- 229920003023 plastic Polymers 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 56
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 239000000843 powder Substances 0.000 claims abstract description 35
- 239000002131 composite material Substances 0.000 claims abstract description 32
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 30
- -1 polypropylene Polymers 0.000 claims abstract description 26
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 14
- 239000006229 carbon black Substances 0.000 claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- 229920001155 polypropylene Polymers 0.000 claims abstract description 13
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 12
- 241001330002 Bambuseae Species 0.000 claims abstract description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 12
- 239000011425 bamboo Substances 0.000 claims abstract description 12
- 239000003610 charcoal Substances 0.000 claims abstract description 12
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 11
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 11
- 229920000573 polyethylene Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 11
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 11
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 11
- 229920001661 Chitosan Polymers 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 50
- 239000000203 mixture Substances 0.000 claims description 44
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- 239000012760 heat stabilizer Substances 0.000 claims description 20
- 239000003431 cross linking reagent Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- 239000004927 clay Substances 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 239000010445 mica Substances 0.000 claims description 10
- 229910052618 mica group Inorganic materials 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 5
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 5
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 5
- 229910052570 clay Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 239000012745 toughening agent Substances 0.000 claims description 5
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims 3
- 238000013508 migration Methods 0.000 abstract description 3
- 230000005012 migration Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- 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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of plastic production, and discloses novel flame-retardant modified plastic which comprises the following components in parts by weight: 30-50 parts of polypropylene resin, 20-40 parts of polyethylene, 15-25 parts of thermoplastic styrene-butadiene rubber, 10-15 parts of nano aluminum hydroxide, 5-15 parts of composite flame-retardant mixing agent, 2-8 parts of nano chitosan, 5-10 parts of high-temperature activated bamboo charcoal powder, 3-8 parts of talcum powder, 5-10 parts of silicone powder, 7-14 parts of glass fiber, 15-20 parts of carbon black master batch and 2-7 parts of auxiliary agent. The invention not only improves the flame retardant property of the modified plastic, but also improves the toughness, wear resistance and scratch resistance of the plastic, so that the modified plastic has good stability and non-migration property, and meanwhile, the application of the carbon black master batch can absorb outdoor ultraviolet light and prolong the service life of a modified plastic product outdoors.
Description
Technical Field
The invention relates to the technical field of plastic production, in particular to novel flame-retardant modified plastic and a production process thereof.
Background
In recent decades, polymer materials such as plastics, rubber, synthetic fibers, etc. and products thereof have been developed vigorously, and they are rapidly replacing traditional natural polymers such as steel, metal, cement, wood, cotton, etc. and are widely used in various departments of national economy such as industry, agriculture, military, etc. Along with the development and the demand of the society, the application of plastics is more and more extensive, and the development of types is more and more, wherein, the application of modified plastics is also more and more extensive, and modified plastics refer to plastic products which are processed and modified by methods such as filling, blending, reinforcing and the like on the basis of general plastics and engineering plastics, and the performances of the aspects such as flame retardance, strength, impact resistance, toughness and the like are improved.
For the common polypropylene plastic, the impact resistance and corrosion resistance are low, the cracking resistance is poor, and the heat resistance is poor, so the application range is limited to a great extent, the market demand can not be met well, although the polypropylene plastic is modified in the market, the performance is improved accordingly, the modification of the performance is not perfect, the efficiency is low, and the environment is not protected, therefore, technical personnel in the field provide a novel flame-retardant modified plastic and a production process thereof, so as to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a novel flame-retardant modified plastic and a production process thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a novel flame-retardant modified plastic comprises the following components in parts by weight: 30-50 parts of polypropylene resin, 20-40 parts of polyethylene, 15-25 parts of thermoplastic styrene-butadiene rubber, 10-15 parts of nano aluminum hydroxide, 5-15 parts of composite flame-retardant mixing agent, 2-8 parts of nano chitosan, 5-10 parts of high-temperature activated bamboo charcoal powder, 3-8 parts of talcum powder, 5-10 parts of silicone powder, 7-14 parts of glass fiber, 15-20 parts of carbon black master batch and 2-7 parts of auxiliary agent;
the composite flame-retardant mixing agent comprises the following components in parts by weight: diatomite, light calcium carbonate, clay, mica powder, a heat stabilizer, a flame-retardant auxiliary agent and a crosslinking agent.
As a further scheme of the invention: the auxiliary agent comprises 1-5 parts of coupling agent, 1-3 parts of dispersing agent, 2-8 parts of toughening agent and 5-10 parts of modifying agent, wherein the modifying agent is nonionic modifying agent, and the dispersing agent is absolute ethyl alcohol.
As a still further scheme of the invention: the finger part method of the composite flame-retardant mixed agent comprises the following steps:
A. the diatomite, the light calcium carbonate, the clay and the mica powder are put into a vacuum stirring tank for fully stirring for 15-30min at the rotating speed of 2000-3000r/min, and a mixture is obtained after uniform stirring;
B. and adding the heat stabilizer, the flame-retardant auxiliary agent and the crosslinking agent into the stirring tank, and continuously stirring the mixture for 10-20min to obtain the composite flame-retardant mixing agent.
As a still further scheme of the invention: the heat stabilizer is one or a mixture of bisphenol A, a composite heat stabilizer and stearate.
As a still further scheme of the invention: the flame-retardant auxiliary agent is one or a mixture of more of antimony trioxide, zinc borate, ammonium octamolybdate and aluminum oxide.
As a still further scheme of the invention: the cross-linking agent is one or a mixture of more of dicumyl peroxide, benzoyl peroxide and dicumyl hydroperoxide.
A novel flame-retardant modified plastic and a production process thereof are disclosed, wherein the production process of the modified plastic comprises the following steps:
s1, sequentially adding a certain amount of polypropylene resin, polyethylene, thermoplastic styrene butadiene rubber, nano aluminum hydroxide and an auxiliary agent into a mixing tank for uniform mixing, controlling the temperature at 50-70 ℃, the rotating speed at 1500-2500r/min and the time at 20-40min, and fully mixing to obtain a mixture A;
s2, putting the high-temperature activated bamboo charcoal powder, the talcum powder, the silicone powder, the glass fiber and the carbon black master batch into a stirring tank for fully stirring at the rotating speed of 2500-3000r/min to obtain a mixture B;
s3, adding the obtained mixture B into a mixing tank, fully stirring and mixing the mixture B with the mixture A, adding a composite flame-retardant mixing agent, continuously stirring for 15-30min, keeping the temperature at 60-80 ℃ during the stirring, and fully mixing to obtain a modified raw material;
and S4, adding the obtained modified raw materials into a double-screw extruder, and extruding, cooling, air-drying and granulating to obtain the flame-retardant modified plastic.
As a still further scheme of the invention: the processing temperature of the twin-screw extruder is as follows: the temperature of the first zone is 140-.
Compared with the prior art, the invention has the beneficial effects that: the invention designs a novel flame-retardant modified plastic and a production process thereof, during actual operation, the flame retardant property of the modified plastic can be further improved by heating a composite flame-retardant mixing agent, and the mutual matching of silicone powder, bamboo charcoal powder, talcum powder, silicone powder, glass fiber and carbon black master batch not only improves the fluidity and the demolding property of the plastic during processing, but also reduces the friction coefficient, improves the wear resistance and scratch resistance, and further improves the toughness of the plastic by matching, so that the plastic has good stability and non-migration property, and meanwhile, the application of the carbon black master batch can absorb outdoor ultraviolet light and prolong the service life of a modified plastic product outdoors.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A novel flame-retardant modified plastic comprises the following components in parts by weight: 30 parts of polypropylene resin, 20 parts of polyethylene, 15 parts of thermoplastic styrene-butadiene rubber, 10 parts of nano aluminum hydroxide, 5 parts of composite flame-retardant mixing agent, 3 parts of nano chitosan, 5 parts of high-temperature activated bamboo charcoal powder, 3 parts of talcum powder, 5 parts of silicone powder, 7 parts of glass fiber, 15 parts of carbon black master batch and 2 parts of auxiliary agent;
the auxiliary agent comprises 2 parts of coupling agent, 1 part of dispersing agent, 4 parts of toughening agent and 5 parts of modifying agent, wherein the modifying agent is nonionic modifying agent, and the dispersing agent is absolute ethyl alcohol;
a novel flame-retardant modified plastic and a production process thereof are disclosed, wherein the production process of the modified plastic comprises the following steps: sequentially adding a certain amount of polypropylene resin, polyethylene, thermoplastic styrene-butadiene rubber, nano aluminum hydroxide and an auxiliary agent into a mixing tank for uniform mixing, controlling the temperature at 50-70 ℃, the rotating speed at 1500-2500r/min and the time at 20-40min, and fully mixing to obtain a mixture A; then putting the high-temperature active bamboo charcoal powder, the talcum powder, the silicone powder, the glass fiber and the carbon black master batch into a stirring tank for fully stirring at the rotating speed of 2500-; adding the obtained mixture B into a mixing tank, fully stirring and mixing with the mixture A, adding a composite flame-retardant mixing agent, continuously stirring for 15-30min, keeping the temperature at 60-80 ℃ during the stirring, and fully mixing to obtain a modified raw material; adding the obtained modified raw materials into a double-screw extruder, and preparing the flame-retardant modified plastic through extrusion, cooling, air drying and grain cutting; wherein, the processing temperature of the double-screw extruder is as follows: the temperature of the first zone is 140-.
The composite flame-retardant mixing agent comprises the following components in parts by weight: diatomite, light calcium carbonate, clay, mica powder, a heat stabilizer, a flame-retardant auxiliary agent and a crosslinking agent, wherein the finger part method of the composite flame-retardant mixing agent comprises the following steps:
A. the diatomite, the light calcium carbonate, the clay and the mica powder are put into a vacuum stirring tank for fully stirring for 15-30min at the rotating speed of 2000-3000r/min, and a mixture is obtained after uniform stirring;
B. and adding the heat stabilizer, the flame-retardant auxiliary agent and the crosslinking agent into the stirring tank, and continuously stirring the mixture for 10-20min to obtain the composite flame-retardant mixing agent.
The heat stabilizer is one or a mixture of more of bisphenol A, a composite heat stabilizer and stearate, the flame retardant auxiliary agent is one or a mixture of more of antimony trioxide, zinc borate, ammonium octamolybdate and aluminum oxide, and the crosslinking agent is one or a mixture of more of dicumyl peroxide, benzoyl peroxide and dicumyl peroxide.
Example 2
A novel flame-retardant modified plastic comprises the following components in parts by weight: 50 parts of polypropylene resin, 40 parts of polyethylene, 25 parts of thermoplastic styrene-butadiene rubber, 15 parts of nano aluminum hydroxide, 15 parts of composite flame-retardant mixing agent, 8 parts of nano chitosan, 10 parts of high-temperature activated bamboo charcoal powder, 8 parts of talcum powder, 10 parts of silicone powder, 14 parts of glass fiber, 20 parts of carbon black master batch and 7 parts of auxiliary agent;
the auxiliary agent comprises 5 parts of coupling agent, 3 parts of dispersing agent, 8 parts of toughening agent and 10 parts of modifying agent, wherein the modifying agent is nonionic modifying agent, and the dispersing agent is absolute ethyl alcohol;
a novel flame-retardant modified plastic and a production process thereof are disclosed, wherein the production process of the modified plastic comprises the following steps: sequentially adding a certain amount of polypropylene resin, polyethylene, thermoplastic styrene-butadiene rubber, nano aluminum hydroxide and an auxiliary agent into a mixing tank for uniform mixing, controlling the temperature at 50-70 ℃, the rotating speed at 1500-2500r/min and the time at 20-40min, and fully mixing to obtain a mixture A; then putting the high-temperature active bamboo charcoal powder, the talcum powder, the silicone powder, the glass fiber and the carbon black master batch into a stirring tank for fully stirring at the rotating speed of 2500-; adding the obtained mixture B into a mixing tank, fully stirring and mixing with the mixture A, adding a composite flame-retardant mixing agent, continuously stirring for 15-30min, keeping the temperature at 60-80 ℃ during the stirring, and fully mixing to obtain a modified raw material; adding the obtained modified raw materials into a double-screw extruder, and preparing the flame-retardant modified plastic through extrusion, cooling, air drying and grain cutting; wherein, the processing temperature of the double-screw extruder is as follows: the temperature of the first zone is 140-.
The composite flame-retardant mixing agent comprises the following components in parts by weight: diatomite, light calcium carbonate, clay, mica powder, a heat stabilizer, a flame-retardant auxiliary agent and a crosslinking agent, wherein the finger part method of the composite flame-retardant mixing agent comprises the following steps:
A. the diatomite, the light calcium carbonate, the clay and the mica powder are put into a vacuum stirring tank for fully stirring for 15-30min at the rotating speed of 2000-3000r/min, and a mixture is obtained after uniform stirring;
B. and adding the heat stabilizer, the flame-retardant auxiliary agent and the crosslinking agent into the stirring tank, and continuously stirring the mixture for 10-20min to obtain the composite flame-retardant mixing agent.
The heat stabilizer is one or a mixture of more of bisphenol A, a composite heat stabilizer and stearate, the flame retardant auxiliary agent is one or a mixture of more of antimony trioxide, zinc borate, ammonium octamolybdate and aluminum oxide, and the crosslinking agent is one or a mixture of more of dicumyl peroxide, benzoyl peroxide and dicumyl peroxide.
Example 3
A novel flame-retardant modified plastic comprises the following components in parts by weight: 40 parts of polypropylene resin, 30 parts of polyethylene, 20 parts of thermoplastic styrene-butadiene rubber, 12 parts of nano aluminum hydroxide, 8 parts of composite flame-retardant mixing agent, 5 parts of nano chitosan, 7 parts of high-temperature activated bamboo charcoal powder, 5 parts of talcum powder, 9 parts of silicone powder, 11 parts of glass fiber, 18 parts of carbon black master batch and 4 parts of auxiliary agent;
the auxiliary agent comprises 3 parts of coupling agent, 2 parts of dispersing agent, 6 parts of toughening agent and 8 parts of modifying agent, wherein the modifying agent is nonionic modifying agent, and the dispersing agent is absolute ethyl alcohol;
a novel flame-retardant modified plastic and a production process thereof are disclosed, wherein the production process of the modified plastic comprises the following steps: sequentially adding a certain amount of polypropylene resin, polyethylene, thermoplastic styrene-butadiene rubber, nano aluminum hydroxide and an auxiliary agent into a mixing tank for uniform mixing, controlling the temperature at 50-70 ℃, the rotating speed at 1500-2500r/min and the time at 20-40min, and fully mixing to obtain a mixture A; then putting the high-temperature active bamboo charcoal powder, the talcum powder, the silicone powder, the glass fiber and the carbon black master batch into a stirring tank for fully stirring at the rotating speed of 2500-; adding the obtained mixture B into a mixing tank, fully stirring and mixing with the mixture A, adding a composite flame-retardant mixing agent, continuously stirring for 15-30min, keeping the temperature at 60-80 ℃ during the stirring, and fully mixing to obtain a modified raw material; adding the obtained modified raw materials into a double-screw extruder, and preparing the flame-retardant modified plastic through extrusion, cooling, air drying and grain cutting; wherein, the processing temperature of the double-screw extruder is as follows: the temperature of the first zone is 140-.
The composite flame-retardant mixing agent comprises the following components in parts by weight: diatomite, light calcium carbonate, clay, mica powder, a heat stabilizer, a flame-retardant auxiliary agent and a crosslinking agent, wherein the finger part method of the composite flame-retardant mixing agent comprises the following steps:
A. the diatomite, the light calcium carbonate, the clay and the mica powder are put into a vacuum stirring tank for fully stirring for 15-30min at the rotating speed of 2000-3000r/min, and a mixture is obtained after uniform stirring;
B. and adding the heat stabilizer, the flame-retardant auxiliary agent and the crosslinking agent into the stirring tank, and continuously stirring the mixture for 10-20min to obtain the composite flame-retardant mixing agent.
The heat stabilizer is one or a mixture of more of bisphenol A, a composite heat stabilizer and stearate, the flame retardant auxiliary agent is one or a mixture of more of antimony trioxide, zinc borate, ammonium octamolybdate and aluminum oxide, and the crosslinking agent is one or a mixture of more of dicumyl peroxide, benzoyl peroxide and dicumyl peroxide.
Comparative example 1
Firstly, the flame-retardant modified plastic used firstly and the preparation process are used.
Experiment one
The flame retardant modified plastics prepared in examples 1 to 3 of the present invention and the flame retardant modified plastic prepared in comparative example 1 were prepared into a strip-shaped test sample (sample size 40mm 120mm 5.5mm) according to the U.S. standard UL94 flame retardant rating or GB/T2408-2008, and then subjected to a combustion test to observe the flame retardant properties of four groups of modified plastics, and the test results are shown in the following table:
in conclusion, the flame-retardant modified plastic designed by the invention has low burning speed and can be ignored, and compared with the existing flame-retardant modified plastic, the flame-retardant modified plastic has strong flame-retardant property, the flame-retardant rate reaches more than 98%, and the flame-retardant modified plastic has good flame retardance;
experiment two
② the tensile strength and elongation at break of the flame-retardant modified plastics prepared in examples 1-3 and comparative example 1 are tested by referring to ASTMD 638;
the flexural strength of the flame-retardant modified plastics prepared in examples 1 to 3 and comparative example 1 was tested with reference to GB/T9341;
the flame-retardant modified plastics prepared in examples 1 to 3 and comparative example 1 were tested for their thermal notched impact strength, see ISO179-2:2010 Standard test;
the flame-retardant modified plastics prepared in examples 1 to 3 and comparative example 1 were tested for thermal stability, see GB 13464-92;
the results of the above experimental data are shown in the following table:
in conclusion, the flame-retardant modified plastic designed by the invention has high-strength flame-retardant efficiency, good stability and non-migration property, and can well improve the toughness and durability of the plastic, further improve the rigidity of the plastic, and further improve the wear resistance and scratch resistance of the modified plastic.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The novel flame-retardant modified plastic is characterized by comprising the following components in parts by weight: 30-50 parts of polypropylene resin, 20-40 parts of polyethylene, 15-25 parts of thermoplastic styrene-butadiene rubber, 10-15 parts of nano aluminum hydroxide, 5-15 parts of composite flame-retardant mixing agent, 2-8 parts of nano chitosan, 5-10 parts of high-temperature activated bamboo charcoal powder, 3-8 parts of talcum powder, 5-10 parts of silicone powder, 7-14 parts of glass fiber, 15-20 parts of carbon black master batch and 2-7 parts of auxiliary agent;
the composite flame-retardant mixing agent comprises the following components in parts by weight: diatomite, light calcium carbonate, clay, mica powder, a heat stabilizer, a flame-retardant auxiliary agent and a crosslinking agent.
2. The novel flame-retardant modified plastic as claimed in claim 1, wherein the auxiliary comprises 1-5 parts of coupling agent, 1-3 parts of dispersant, 2-8 parts of toughening agent and 5-10 parts of modifier, wherein the modifier is nonionic modifier, and the dispersant is absolute ethyl alcohol.
3. The novel flame-retardant modified plastic as claimed in claim 1, wherein the finger method of the composite flame-retardant mixture is as follows:
A. the diatomite, the light calcium carbonate, the clay and the mica powder are put into a vacuum stirring tank for fully stirring for 15-30min at the rotating speed of 2000-3000r/min, and a mixture is obtained after uniform stirring;
B. and adding the heat stabilizer, the flame-retardant auxiliary agent and the crosslinking agent into the stirring tank, and continuously stirring the mixture for 10-20min to obtain the composite flame-retardant mixing agent.
4. The novel flame-retardant modified plastic as claimed in claim 1, wherein the heat stabilizer is one or a mixture of bisphenol A, a composite heat stabilizer and stearate.
5. The novel flame-retardant modified plastic according to claim 1, wherein the flame-retardant auxiliary agent is one or a mixture of antimony trioxide, zinc borate, ammonium octamolybdate and aluminum oxide.
6. The novel flame-retardant modified plastic as claimed in claim 1, wherein the crosslinking agent is one or more of dicumyl peroxide, benzoyl peroxide and dicumyl hydroperoxide.
7. The novel flame-retardant modified plastic and the production process thereof according to any one of claims 1 to 6, wherein the production process of the modified plastic comprises the following steps:
s1, sequentially adding a certain amount of polypropylene resin, polyethylene, thermoplastic styrene butadiene rubber, nano aluminum hydroxide and an auxiliary agent into a mixing tank for uniform mixing, controlling the temperature at 50-70 ℃, the rotating speed at 1500-2500r/min and the time at 20-40min, and fully mixing to obtain a mixture A;
s2, putting the high-temperature activated bamboo charcoal powder, the talcum powder, the silicone powder, the glass fiber and the carbon black master batch into a stirring tank for fully stirring at the rotating speed of 2500-3000r/min to obtain a mixture B;
s3, adding the obtained mixture B into a mixing tank, fully stirring and mixing the mixture B with the mixture A, adding a composite flame-retardant mixing agent, continuously stirring for 15-30min, keeping the temperature at 60-80 ℃ during the stirring, and fully mixing to obtain a modified raw material;
and S4, adding the obtained modified raw materials into a double-screw extruder, and extruding, cooling, air-drying and granulating to obtain the flame-retardant modified plastic.
8. The novel flame-retardant modified plastic and the production process thereof as claimed in claim 7, wherein the processing temperature of the twin-screw extruder is as follows: the temperature of the first zone is 140-.
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Application publication date: 20200922 |