CN101899192B - Low-smoke fireproof polyvinyl chloride/acrylonitrile butadiene styrene (PVC/ABS) alloy and preparation method thereof - Google Patents
Low-smoke fireproof polyvinyl chloride/acrylonitrile butadiene styrene (PVC/ABS) alloy and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of plastic alloy, in particular to low-smoke fireproof PVC/ABS alloy and a preparation method thereof. The alloy mainly comprises ABS resin, a fire retardant, a compatilizer, a smoke suppression agent, PVC resin, a stabilizer and a lubricating dispersant. The preparation method comprises the following steps of: uniformly stirring the ABS resin, the fire retardant, the compatilizer and half lubricating dispersant and feeding the mixed material into a twin-screw extruder from a main feeding port; stirring the PVC resin, the stabilizer and the other half lubricating dispersant at a high speed and then feeding the mixed material into the twin-screw extruder from a middle segment by using a lateral feeder; and fusing and mixing the mixture and performing uniform extruding granulation to obtain the low-smoke fireproof PVC/ABS alloy. The low-smoke fireproof PVC/ABS alloy has high color stability, high fire resistance and high mechanical performance, has the characteristic of low smoke when the alloy is combusted and therefore is widely applied in electronics and appliance industries.
Description
Technical field
The present invention relates to the polyblend technical field, particularly relate to a kind of low-smoke fireproof PVC/ABS Alloy And Preparation Method.
Background technology
PVC is the abbreviation of SE; Not only good rigidly, intensity are high, and fire-retardant, corrosion-resistant, electric insulating quality is good and be widely used, but its poor processability; Notched Izod impact strength and heat-drawn wire are low; Fragility is big, so the very difficult engineering plastics that replace of PVC, and this makes its application be very limited again.ABS resin is the abbreviation of acrylonitrile-butadiene-styrene copolymer; Has good comprehensive performances; In awide temperature range, have high impulse strength and surface strength, heat-drawn wire is high, and dimensional stability is good; Have certain chemical stability, but weathering resistance and thermotolerance are relatively poor, inflammable and price is also higher.Form a kind of PVC/ABS alloy of submicroscopic heterogeneous homogeneous after PVC and the ABS blending.The PVC/ABS alloy is learnt from other's strong points to offset one's weaknesses on performance each other, it both had ABS resin shock-resistant, low temperature resistant, be easy to advantages such as forming process, have flame retardant resistance and the corrosion resistant premium properties of PVC again.
At present; Melt extrude granulation through twin screw extruder after domestic PVC/ABS alloy mainly adopts PVC particulate material and ABS resin to mix and form, melt extrude granulation through twin screw extruder after the PVC/ABS alloy of fire rating mainly adopts PVC particulate material, bromide fire retardant, Antimony Trioxide: 99.5Min and ABS resin to mix and form.Because the PVC particulate material is formed through granulation by PVC powder adding assistant, cause with the PVC particulate material higher than directly using PVC powder cost; The PVC material is low because of poor heat stability, decomposition temperature in addition, and it mixes the back from same charging opening charging with ABS resin, makes PVC suffer strong the shearing and long thermal history and decomposing, and makes alloy product color instability and the degradation produced; Again because the fire-retardant alloy of bromine antimony flame-retardant system amount of being fuming when burning is too big, in case presence of fire, with producing serious smoke harm.
Summary of the invention
In order to address the above problem, one of the object of the invention is, a kind of low-smoke fireproof PVC/ABS alloy is provided.
Another object of the present invention is, the preparation method of above-mentioned low-smoke fireproof PVC/ABS alloy is provided; This is invented, and not only preparation technology is simple, and with low cost.
The present invention realizes through following technical scheme:
A kind of low-smoke fireproof PVC/ABS alloy; Comprise the following material that calculates according to weight percent:
Said fire retardant is the mixture of fire retardant A and fire retardant B; But said fumicants is molybdic oxide or ammonium octamolybdate.
Wherein, said ABS resin is that (220 ℃, resin 10kg) is like ABS PA747S, ABS PA757, ABS AG15A1, ABS GP22 etc. for 5g/10min～40g/10min for the melting index scope.
Said polyvinyl chloride resin is PVC SG3～SG8 type.
Said fire retardant is the mixture of fire retardant A and fire retardant B, and fire retardant A is bromide fire retardant such as TDE, tetrabromo-bisphenol, brominated epoxy resin etc., and fire retardant B is the mixture of zinc borate or zinc sulphide and inorganic hydrogen oxygen compound.
Weight ratio between said fire retardant B mesoboric acid zinc or zinc sulphide and the inorganic hydrogen oxygen compound is 1: 1～2, and said inorganic hydrogen oxygen compound is one or both the mixture in white lake or the Marinco H.
The said compatilizer of said compatilizer is one or more mixtures in acrylic acid esters co-polymer (being called for short ACR), Methacrylate-butadiene-styrene (being called for short MBS), chlorinatedpolyethylene (being called for short CPE) or the polymethylmethacrylate (being called for short PMMA).
Said stablizer is that organotin is stable, calcium zinc stabilizer or rare-earth stabilizer etc.
Said lubrication dispersing agent is Triple Pressed Stearic Acid, Zinic stearas, calcium stearate, polyethylene wax or N, N '-ethylene bis stearamide etc.
The preparation method of low-smoke fireproof PVC/ABS alloy; With ABS resin, fire retardant, compatilizer, back main spout adding from twin screw extruder but fumicants and half the dispersion agent stir; Through the feeding of side spout, get after polyvinyl chloride resin, stablizer and second half the lubrication dispersing agent high-speed stirring at 150 ℃～200 ℃ melting mixing extruding pelletizations; Said side spout is arranged on the middle part of twin screw extruder machine barrel.
Said twin screw extruder is the homodromy parallel twin screw extruder, and said screw slenderness ratio scope is 36～44: 1, and the screw combinations shearing resistance between said main spout to the side spout is greater than the screw combinations shearing resistance between side spout to the head.
Said side spout to the screw rod between the head is provided with 0～1 group 90 ° kneading piece; Screw rod between said main spout to the side spout is provided with 1～2 group 90 ° kneading piece.
The present invention is counted by weight percentage; Mainly comprise 25%～60% ABS resin and 20%～50% polyvinyl chloride resin; Wherein fire retardant is that bromide fire retardant gets with mixing the fire retardant blend, mixes fire retardant and be mixing of zinc borate or zinc sulphide and inorganic hydrogen oxygen compound; Be equipped with compatilizer, stablizer, lubrication dispersing agent and press down fumicants; Mixture is when 150 ℃～200 ℃ fusions; Collaborative each other between each material; Make the present invention not only have simultaneously the good rigidly of PVC and ABS resin, intensity high, corrosion-resistant, shock-resistant, be easy to characteristic such as forming process, and, the too big shortcoming of the amount of being fuming when having overcome the burning of bromine antimony fire retardant systems.The present invention not only has good colour stability, flame retardant resistance and mechanical property, and in the time of incendiary, has the characteristic of low cigarette, thereby is widely used in electronic apparatus and household electric appliances.Through detecting, traditional P VC/ABS alloy smoke density value is 90～100, and of the present invention is 30～40, and is visible, and the present invention is low, and the cigarette effect obviously is superior to conventional P VC/ABS alloy.
Concrete embodiment
Below in conjunction with embodiment the present invention is done further detailed description, to help it will be apparent to those skilled in the art that the present invention.
Embodiment 1
A kind of low-smoke fireproof PVC/ABS alloy; Comprise ABS PA747S resin 25%, SG3～SG8 type polyvinyl chloride resin 50%, fire retardant 10% (mixture of tetrabromo-bisphenol by 6% and 2% zinc borate and 2% white lake is formed), compatilizer ACR5%, organotin stabilizer 1%, the lubrication dispersing agent Triple Pressed Stearic Acid 4% that calculates according to weight percent and press down fumicants molybdic oxide 5%.
The preparation method is: with ABS resin, fire retardant, the back main spout adding from twin screw extruder but fumicants, compatilizer and half the lubrication dispersing agent stir; Through of the stage casing feeding of side feeder, get after polyvinyl chloride resin, stablizer and second half the lubrication dispersing agent high-speed stirring at 150 ℃～200 ℃ melting mixing extruding pelletizations from twin screw extruder.
Said twin screw extruder is the homodromy parallel twin screw extruder; And have the side drawing-in device; Its screw slenderness ratio scope is 36: 1; The side spout is positioned at the machine barrel middle part, and the material mouthful screw combinations to head is the combination of more weak shearing from the side position, does not allow or allow at most one group 90 ° kneading piece; From the screw combinations between main spout to the side spout is the moderate shear combination of strength, allows 1～2 group 90 ° kneading piece.
Embodiment 2
A kind of low-smoke fireproof PVC/ABS alloy; Comprise ABS PA757 resin 45%, SG3～SG8 type polyvinyl chloride resin 30%, fire retardant 15% (mixture of tetrabromo-bisphenol by 7% and 2% zinc sulphide and 6% Marinco H is formed), compatilizer MBS2%, calcium zinc stabilizer 3%, the lubricant stearic acid zinc 2% that calculates according to weight percent and press down fumicants molybdic oxide 3%.
The preparation method is: with ABS resin, fire retardant, the back main spout adding from twin screw extruder but fumicants, compatilizer and half the lubrication dispersing agent stir; Through of the stage casing feeding of side feeder, get after polyvinyl chloride resin, stablizer and second half the lubrication dispersing agent high-speed stirring at 150 ℃～200 ℃ melting mixing extruding pelletizations from twin screw extruder.
Said twin screw extruder is the homodromy parallel twin screw extruder; And have the side drawing-in device; Its screw slenderness ratio scope is 38: 1; The side spout is positioned at the machine barrel middle part, and the material mouthful screw combinations to head is the combination of more weak shearing from the side position, does not allow or allow at most one group 90 ° kneading piece; From the screw combinations between main spout to the side spout is the moderate shear combination of strength, allows 1～2 group 90 ° kneading piece.
Embodiment 3
A kind of low-smoke fireproof PVC/ABS alloy; Comprise the ABS AG15A1 resin 50%, SG3～SG8 type polyvinyl chloride resin 30%, fire retardant 12% (mixture of tetrabromo-bisphenol by 8% and 2% zinc sulphide and 2% Marinco H is formed), Compatibilizer C PE2%, rare-earth stabilizer 1.5%, the lubrication dispersing agent N that calculate according to weight percent, N '-ethylene bis stearamide 2% and but fumicants ammonium octamolybdate 2.5%.
The preparation method is: with ABS resin, fire retardant, the back main spout adding from twin screw extruder but fumicants, compatilizer and half the lubrication dispersing agent stir; Through of the stage casing feeding of side feeder, get after polyvinyl chloride resin, stablizer and second half the lubrication dispersing agent high-speed stirring at 150 ℃～200 ℃ melting mixing extruding pelletizations from twin screw extruder.
Said twin screw extruder is the homodromy parallel twin screw extruder; And have the side drawing-in device; Its screw slenderness ratio scope is 40: 1; The side spout is positioned at the machine barrel middle part, and the material mouthful screw combinations to head is the combination of more weak shearing from the side position, does not allow or allow at most one group 90 ° kneading piece; From the screw combinations between main spout to the side spout is the moderate shear combination of strength, allows 1～2 group 90 ° kneading piece.
Embodiment 4
A kind of low-smoke fireproof PVC/ABS alloy; Comprise ABS GP22 resin 60%, SG3～SG8 type polyvinyl chloride resin 20%, fire retardant 13% (mixture of tetrabromo-bisphenol by 7% and 2% zinc borate and 2% Marinco H and 2% white lake is formed), compatilizer 3% (PMMA comprising 1% and 2% CPE), calcium zinc stabilizer 2.5%, the lubrication dispersing agent polyethylene wax 1% that calculates according to weight percent and press down fumicants molybdic oxide 0.5%.
The preparation method is: with ABS resin, fire retardant, the back main spout adding from twin screw extruder but fumicants, compatilizer and half the lubrication dispersing agent stir; Through of the stage casing feeding of side feeder, get after polyvinyl chloride resin, stablizer and second half the lubrication dispersing agent high-speed stirring at 150 ℃～200 ℃ melting mixing extruding pelletizations from twin screw extruder.
Said twin screw extruder is the homodromy parallel twin screw extruder; And have the side drawing-in device; Its screw slenderness ratio scope is 44: 1; The side spout is positioned at the machine barrel middle part, and the material mouthful screw combinations to head is the combination of more weak shearing from the side position, does not allow or allow at most one group 90 ° kneading piece; From the screw combinations between main spout to the side spout is the moderate shear combination of strength, allows 1～2 group 90 ° kneading piece.
Through detecting, traditional P VC/ABS alloy smoke density value is 90～100, and of the present invention is 30～40, and is visible, and the present invention is low, and the cigarette effect obviously is superior to conventional P VC/ABS alloy.
The foregoing description is preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention, so all equivalences of being done with described characteristic of claim of the present invention and principle change or modify, all should be included within the claim scope of the present invention.
Claims (8)
1. a low-smoke fireproof PVC/ABS alloy is characterized in that, comprises the following material that calculates according to weight percent:
ABS resin 25%～60%;
Polyvinyl chloride resin 20%～50%;
Fire retardant 10%～15%;
Compatilizer 2%～5%;
Stablizer 1%～3%;
Lubrication dispersing agent 1%～4%;
Press down fumicants 0.5%～5%;
Said fire retardant is the mixture of fire retardant A and fire retardant B; Said fire retardant A is a bromide fire retardant; Fire retardant B is the mixture of zinc borate or zinc sulphide and inorganic hydrogen oxygen compound; Weight ratio between said fire retardant B mesoboric acid zinc or zinc sulphide and the inorganic hydrogen-oxygen is 1: 1～2, and said inorganic hydrogen oxygen compound is one or both the mixture in white lake or the Marinco H.
2. according to the said low-smoke fireproof PVC/ABS of claim 1 alloy, it is characterized in that: said ABS resin is the resin of 5g/10min～40g/10min for the melting index scope.
3. according to the said low-smoke fireproof PVC/ABS of claim 1 alloy, it is characterized in that: but said fumicants is molybdic oxide or ammonium octamolybdate.
4. according to the said low-smoke fireproof PVC/ABS of claim 3 alloy, it is characterized in that: said bromide fire retardant is the one or more combination thing in TDE, tetrabromo-bisphenol or the brominated epoxy resin.
5. according to the said low-smoke fireproof PVC/ABS of claim 1 alloy, it is characterized in that: said compatilizer is one or more mixtures in acrylic acid esters co-polymer, Methacrylate-butadiene-styrene, chlorinatedpolyethylene or the polymethylmethacrylate.
6. according to the said low-smoke fireproof PVC/ABS of claim 1 alloy, it is characterized in that: said stablizer is organotin stabilizer, calcium zinc stabilizer or rare-earth stabilizer.
7. according to the said low-smoke fireproof PVC/ABS of claim 1 alloy, it is characterized in that: said lubrication dispersing agent is Triple Pressed Stearic Acid, Zinic stearas, calcium stearate, polyethylene wax or N, N '-ethylene bis stearamide.
8. the preparation method of the said low-smoke fireproof PVC/ABS of claim 1 alloy; It is characterized in that: with ABS resin, fire retardant, compatilizer, back main spout adding from twin screw extruder but fumicants and half the lubrication dispersing agent stir; Through the feeding of side spout, get after polyvinyl chloride resin, stablizer and second half the lubricated lubricant high-speed stirring at 150 ℃～200 ℃ melting mixing extruding pelletizations.
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| CN2010102298591A CN101899192B (en) | 2010-07-19 | 2010-07-19 | Low-smoke fireproof polyvinyl chloride/acrylonitrile butadiene styrene (PVC/ABS) alloy and preparation method thereof |
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| CN102295811A (en) * | 2011-07-07 | 2011-12-28 | 鹤山联塑实业发展有限公司 | Alloy plastic wire duct and its production method |
| CN102964715B (en) * | 2011-09-01 | 2015-11-04 | 合肥杰事杰新材料股份有限公司 | A kind of flaming retarding cold resistant PVC/ABS Alloy And Preparation Method |
| CN102372884A (en) * | 2011-09-30 | 2012-03-14 | 常熟市星源金属涂层厂 | Inflaming-retarding and smoke-inhibiting type molecular sieve filling polyvinyl chloride composite material and preparation method thereof |
| CN103509309A (en) * | 2012-06-27 | 2014-01-15 | 合肥杰事杰新材料股份有限公司 | Environment-friendly low-smoke fire-retardant acrylonitrile-butadiene-styrene (ABS) resin and preparation method thereof |
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| CN104987647A (en) * | 2015-07-21 | 2015-10-21 | 上海婉静纺织科技有限公司 | Flame-retardant ABS (Acrylonitrile-Butadiene-Styrene copolymer) plastics |
| CN105566835A (en) * | 2015-12-15 | 2016-05-11 | 常熟市强盛冲压件有限公司 | High-voltage drop type fuse supporting seat |
| CN107216578A (en) * | 2017-07-31 | 2017-09-29 | 东莞市安拓普塑胶聚合物科技有限公司 | A kind of environmentally friendly low-smoke and flame retardant PVC material and its preparation method and application |
| CN110305440B (en) * | 2019-06-17 | 2021-07-13 | 金发科技股份有限公司 | Environment-friendly flame-retardant ABS (acrylonitrile-butadiene-styrene) composite material and preparation method thereof |
| CN113980403A (en) * | 2021-09-29 | 2022-01-28 | 湖北金牛管业有限公司 | Injection molding grade PVC-ABS alloy flame-retardant plastic particle and preparation method thereof |
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