CN110982212A - Low-smoke flame-retardant antistatic ABS material and preparation method thereof - Google Patents
Low-smoke flame-retardant antistatic ABS material and preparation method thereof Download PDFInfo
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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 55
- 239000003063 flame retardant Substances 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 title claims abstract description 49
- 239000000779 smoke Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 42
- 239000002216 antistatic agent Substances 0.000 claims abstract description 19
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- -1 polysiloxane Polymers 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 14
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 12
- 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 10
- 238000001746 injection moulding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 229920001897 terpolymer Polymers 0.000 claims description 3
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 claims description 2
- CTMFECUQKLSOGJ-UHFFFAOYSA-N 4-bromotriazine Chemical compound BrC1=CC=NN=N1 CTMFECUQKLSOGJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 5
- 229920001296 polysiloxane Polymers 0.000 abstract description 5
- 239000005060 rubber Substances 0.000 abstract description 5
- 229910052599 brucite Inorganic materials 0.000 abstract description 4
- 229920002545 silicone oil Polymers 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000001629 suppression Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005979 thermal decomposition reaction Methods 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical group 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 239000012745 toughening agent Substances 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- 206010000369 Accident Diseases 0.000 description 1
- 206010003497 Asphyxia Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 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
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
- 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
- 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
- C08L2201/04—Antistatic
-
- 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 provides a low-smoke flame-retardant antistatic ABS material, which is prepared from the following raw materials in parts by weight: ABS resin: 60-85 parts; brominated flame retardants: 2.5-10 parts; antimony trioxide-containing complex: 0.5-5 parts; polysiloxane rubber: 1-5 parts; antistatic agent: 10-15 parts; nano brucite: 0.8-5 parts; silicone oil: 0.1-1 part; metal passivator: 0.1-2 parts. The low-smoke flame-retardant antistatic ABS material and the preparation method thereof can obtain the ABS material with good flame retardant property, low smoke and antistatic property, and the safety performance is good.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a high-oxygen-index low-smoke flame-retardant ABS material and a preparation method thereof.
Background
The ABS resin is a terpolymer consisting of styrene, butadiene and acrylonitrile, integrates the high fluidity of the styrene, the rubber toughness of the butadiene and the chemical resistance of the acrylonitrile, has excellent processability, low temperature resistance, electric insulation performance, chemical corrosion resistance, high gloss and excellent electroplating performance, has the excellent characteristics of good creep resistance, high dimensional stability, small molding shrinkage and the like, and is widely applied to the fields of war industry, automobiles, electronic and electric appliances and the like.
At present, the flame retardant modification of ABS resin is a common ABS resin modification method at present. There are two main categories of these flame retardant modification techniques: one is halogen flame retardant, for example, flame retardant containing bromine and flame retardant synergist of antimony oxide are added to achieve flame retardant effect; another class is halogen-free flame retardant, for example, incorporating phosphorus-containing, nitrogen-containing flame retardants and char-forming agents. The first kind (halogen flame retardant) of flame retardant technology has relatively low cost and high flame retardant efficiency, and is the most widely used technology at present. However, since the styrene-based polymer contains benzene rings and unsaturated double bonds, a large amount of smoke is generated during combustion, and the amount of smoke generated by the halogen-antimony system flame retardant material is even greater. In the using process, once a fire accident happens, the generation of smoke and toxic gas can not only cause oxygen deficiency asphyxiation, but also cause low visibility in dangerous areas, which is not beneficial to rescue and causes casualties and property loss.
In addition, because ABS material is bad conductor of electricity, accumulate static charge easily in processing and use, when static charge accumulation to certain degree, static can cause the material to adsorb the dust to and cause the material to destroy, still can produce static spark discharge, arouse chemical products storehouse etc. to explode and catch fire, cause serious personal accident.
Disclosure of Invention
In view of the above, the invention aims to provide a low-smoke flame-retardant antistatic ABS material and a preparation method thereof, so as to obtain the ABS material with good flame retardant property, low smoke and good antistatic property, and good safety performance.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a low-smoke flame-retardant antistatic ABS material is prepared from the following raw materials in parts by weight:
polysiloxane rubbers can serve three functions in the formulation, first, toughening: under the impact of external force, the rubber in the multipolymer can keep good deformation and movement capability and still can initiate a large amount of silver lines and shear bands on an ABS matrix, thereby improving the toughness of the material. Secondly, smoke suppression: upon combustion, the organosilicon-rich layer formed upon migration of the organosilicon to the surface of the material produces an inorganic oxygen-and heat-insulating protective layer containing Si bonds and/or Si-C bonds, which is characteristic of polysiloxanes. This not only prevents the combustion decomposition product from escaping, but also inhibits the thermal decomposition of the high molecular material, and achieves the purposes of flame retardance, low smoke, low toxicity, etc. Thirdly, scratch resistance: migration of the silicone to the surface can improve the stick-slip behavior of the material, thereby enhancing the scratch resistance of the material.
The nano brucite has a series of heat absorption and water loss processes in the combustion process of the polymer. The heat absorption process can reduce the temperature of the combustion surface, and the release of a large amount of moisture can dilute the concentration of oxygen, combustible gas and smoke so as to achieve the effects of flame retardance and smoke suppression.
The antistatic agent is a high-molecular permanent antistatic agent.
The macromolecular permanent antistatic agent belongs to a hydrophilic polymer, and after the macromolecular permanent antistatic agent is blended with a macromolecular substrate, on one hand, due to the fact that the movement capability of molecular chains is strong, proton movement is convenient among molecules, and generated static charges are conducted and released through ion conduction; on the other hand, the antistatic ability is exhibited by its particular dispersed form. The polymer permanent antistatic agent is mainly distributed in a fine layer or a rib shape on the surface layer of a product to form a conductive surface layer, and is distributed in a nearly spherical shape on the central part to leak static charge by using the conductive surface layer as a passage.
In addition, the high-molecular permanent antistatic agent achieves the antistatic effect by reducing the volume resistivity of the material, does not completely depend on surface water absorption, is less influenced by the humidity of the environment and is very suitable for preparing the material.
The metal passivator is one or more of N, N-diacetyladipoyl dihydrazide, N-salicylidene-N-salicylidene hydrazide or disalicylhydrazide.
The metal passivator used as an antioxidant has excellent thermal stability, and the metal passivator is added to improve the thermal stability of the composite material and prevent the composite material from degrading in the process of extruding, granulating or injection molding a workpiece; another object is to improve the long-term aging behavior of the composite
In addition, compared with other types of antioxidants, the metal passivator has small inhibiting effect on dispersion and intermolecular proton of the high-molecular permanent antistatic agent, and cannot generate adverse effect on the antistatic performance of the high-molecular permanent antistatic agent.
The ABS resin is terpolymer of acrylonitrile, butadiene and styrene, wherein the weight percentage content of the butadiene is 10-55%, the weight percentage content of the acrylonitrile is 15-32%, and the weight percentage content of the styrene is 30-70%.
The brominated flame retardant is one or more of tetrabromobisphenol A, bromotriazine or tribromophenol isocyanate.
The brominated flame retardant has good flame retardant performance on one hand, and the compatibility of the brominated flame retardant and the antistatic agent is very good on the other hand, so that the addition of a proper amount of the brominated flame retardant is beneficial to the conduction and the release of static charges generated by the macromolecular permanent antistatic agent by utilizing ion conduction, and the prepared material has excellent antistatic performance.
However, if the content of the bromine-based flame retardant added is too high, the conductive surface layer formed by the polymer permanent antistatic agent on the surface layer of the product becomes too thick, and the antistatic performance of the polymer permanent antistatic agent is lowered. Therefore, the addition of 2.5 to 10 parts by weight of the brominated flame retardant can ensure the flame retardant performance of the product and also ensure that the high-molecular permanent antistatic agent has good antistatic performance.
The weight ratio of the antimony trioxide to the zinc borate is 3:1-1: 3.
The compound of antimony trioxide and zinc borate is used, so that the flame retardant effect is improved, and the smoke suppression effect is achieved. When the temperature is higher than 300 ℃, the zinc borate can generate thermal decomposition to release crystal water, and the zinc borate plays a role in absorbing heat and cooling and diluting oxygen in air. In addition, decomposition of zinc borate at high temperatures produces B2O3A coating layer is formed on the surface of the polymer, and the coating layer can inhibit the generation of combustible gas and can prevent oxidation reaction and thermal decomposition.
In addition, the oxygen index of the material can be greatly improved by using the compound of the antimony trioxide and the zinc borate.
Meanwhile, crystal water released by thermal decomposition of zinc borate and dehydration of nano brucite are mutually promoted in the combustion process, the crystal water and the nano brucite mutually promote the mutual heat absorption effect, and simultaneously release a large amount of water to dilute oxygen, so that a better smoke suppression effect is achieved.
A method for preparing a low-smoke flame-retardant antistatic ABS material comprises the following steps:
(1) fully mixing the raw materials of the components in a high-speed mixer according to the proportion for 10-60 minutes;
(2) conveying the mixture into a double-screw extruder through a precisely-metered feeding device, controlling the temperature of each section of screw of the extruder to be between 180 ℃ and 230 ℃, controlling the length-diameter ratio of the double-screw extruder to be 25-40 and controlling the rotating speed of the screw to be 200 revolutions per minute, fully melting and compounding the materials under the shearing, mixing and conveying of the screw, and then extruding, granulating and drying to obtain the transparent flame-retardant ABS material;
(3) and (3) adding the ABS material in the step (2) into an injection molding machine to be processed into a required sample strip, wherein the injection molding conditions comprise that the temperature of a charging barrel is 190 ℃ and 240 ℃, the temperature of a mold is 60-70 ℃, and the injection molding pressure is 6-10 MPa.
Compared with the prior art, the low-smoke flame-retardant antistatic ABS material and the preparation method thereof have the following advantages:
(1) the low-smoke flame-retardant antistatic ABS material can ensure that the surface resistivity of the flame-retardant antistatic ABS compound is from 10 by adding the antistatic agent16Omega is reduced to 108Omega, antistatic effect is good.
(2) The low-smoke flame-retardant antistatic ABS material disclosed by the invention has the smoke suppression effect on other formula components such as a flame-retardant synergist, an organic silicon toughening agent and a lubricant besides the smoke suppression agent, and the smoke density of the material is extremely low due to the synergistic smoke suppression of the components; the smoke density of the flame-retardant ABS is reduced by 70 percent compared with the commercial flame-retardant ABS.
(3) According to the low-smoke flame-retardant antistatic ABS material disclosed by the invention, the flame retardant grade of the ABS material reaches V-0 grade through tests, and the ABS material has the characteristics of excellent mechanical property, low smoke density, high elongation at break, high oxygen index, scratch resistance and the like.
(4) The low-smoke flame-retardant antistatic ABS material is simple and easy to prepare, easy to process and very suitable for popularization and application in the fields of household appliances, electric instruments, building industry, traffic industry, security industry and the like.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
The invention will be described in detail with reference to the following examples.
In the invention, the ABS is compounded by Taiwan ABSAG10NP-AK and Taiwan Qimei ABS PA-757; the brominated flame retardant is brominated triazine, and the specific trade mark is FR-245 of Israel dead sea bromine company; the antimony trioxide is S-05N of Yunnan Murray antimony industry Co., Ltd, and the zinc borate is ZB-500 of Dourbon-the-fly high-energy chemical industry Co., Ltd. The specific name of the polysiloxane rubber is Talon chemical S-1720. The antistatic agent is selected from the group consisting of peleltat 6500, a compound of the sanyo type.
The preparation methods of the examples and comparative examples of the present invention include the following steps:
(1) fully mixing the raw materials of the components in a high-speed mixer according to the proportion for 10-60 minutes;
(2) conveying the mixture into a double-screw extruder through a precisely-metered feeding device, controlling the temperature of each section of screw of the extruder to be 180-230 ℃, controlling the length-diameter ratio of the double-screw extruder to be 25-40, controlling the rotating speed of the screw to be 200-800 revolutions per minute, fully melting and compounding the materials under the shearing, mixing and conveying of the screw, and then extruding, granulating and drying to obtain the transparent flame-retardant ABS material;
(3) adding the flame-retardant ABS material into an injection molding machine to be processed into a required sample strip, wherein the injection molding conditions are as follows: the temperature of the charging barrel is 190 ℃ and 240 ℃, the temperature of the die is 60-70 ℃, and the injection pressure is 6-10 MPa.
TABLE 1 concrete ratio (in parts by weight) of each component in examples and comparative examples
The products obtained in the examples and the comparative examples are tested for relevant properties by adopting an ISO standard; the UL-94 vertical burner used to test the flame retardant rating was ATLASHVUL-2, USA; the plastic particles prepared in the above examples and comparative examples were injection molded into test standard specimens in standard sizes, and performance tests were performed according to the test standards, and the test results are shown in Table 2.
TABLE 2 tabulation of material property test data obtained for examples and comparative examples
As can be seen from the test results of the examples and the comparative examples in the table 2, compared with the comparative example 1, the components of the examples have the smoke suppression effect except the smoke suppressant and other formulation components such as the flame retardant synergist, the organosilicon toughening agent and the lubricant, and the components are synergistic to suppress smoke, so that the smoke density of the material is extremely low, and the smoke generation amount can be reduced by 70-80% at the lowest;
in addition, zinc borate is added into the flame-retardant synergist to replace part of antimony trioxide, so that the smoke density of the composite material is reduced, the oxygen index of the composite material is greatly improved, and the oxygen index is increased from 26 to 33.
In addition, by adding an antistatic agent, the surface resistivity of the composition can be made to be from 1016Omega is reduced to 108Omega, antistatic effect is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
1. A low-smoke flame-retardant antistatic ABS material is characterized in that: the feed is prepared from the following raw materials in parts by weight:
2. the low-smoke flame-retardant antistatic ABS material according to claim 1, characterized in that: the antistatic agent is a high-molecular permanent antistatic agent.
3. The low-smoke flame-retardant antistatic ABS material according to claim 1, characterized in that: the metal passivator is one or more of N, N-diacetyladipoyl dihydrazide, N-salicylidene-N-salicylidene hydrazide or disalicylhydrazide.
4. The low-smoke flame-retardant antistatic ABS material according to claim 1, characterized in that: the ABS resin is terpolymer of acrylonitrile, butadiene and styrene, wherein the weight percentage content of the butadiene is 10-55%, the weight percentage content of the acrylonitrile is 15-32%, and the weight percentage content of the styrene is 30-70%.
5. The low-smoke flame-retardant antistatic ABS material according to claim 1, characterized in that: the brominated flame retardant is one or more of tetrabromobisphenol A, bromotriazine or tribromophenol isocyanate.
6. The low-smoke flame-retardant antistatic ABS material according to claim 1, characterized in that: the weight ratio of the antimony trioxide to the zinc borate is 3:1-1: 3.
7. A method for preparing the low-smoke flame-retardant antistatic ABS material of any of claims 1-6, characterized in that: the method comprises the following steps:
(1) fully mixing the raw materials of the components in a high-speed mixer according to the proportion for 10-60 minutes;
(2) conveying the mixture into a double-screw extruder through a precisely-metered feeding device, controlling the temperature of each section of screw of the extruder to be between 180 ℃ and 230 ℃, controlling the length-diameter ratio of the double-screw extruder to be 25-40 and controlling the rotating speed of the screw to be 200 revolutions per minute, fully melting and compounding the materials under the shearing, mixing and conveying of the screw, and then extruding, granulating and drying to obtain the transparent flame-retardant ABS material;
(3) and (3) adding the ABS material in the step (2) into an injection molding machine to be processed into a required sample strip, wherein the injection molding conditions comprise that the temperature of a charging barrel is 190 ℃ and 240 ℃, the temperature of a mold is 60-70 ℃, and the injection molding pressure is 6-10 MPa.
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