CN103496047A - Preparation method of nanometer flame-retardant plastic - Google Patents
Preparation method of nanometer flame-retardant plastic Download PDFInfo
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- CN103496047A CN103496047A CN201310430982.3A CN201310430982A CN103496047A CN 103496047 A CN103496047 A CN 103496047A CN 201310430982 A CN201310430982 A CN 201310430982A CN 103496047 A CN103496047 A CN 103496047A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to a preparation method of a nanometer flame-retardant plastic. The preparation method of the nanometer flame-retardant plastic is characterized by comprising the following steps: feeding: placing recycled waste plastic, heavy calcium carbonate and an organic solvent into a plastic granulator, performing catalytic reaction on the organic solution and the recycled waste plastic, and completely stirring to mix uniformly to obtain a composite material; conveying the composite material into a screw type electric smelting machine, heating, further mixing, and spirally propelling the composite material, which is heated to be thick, to an outlet by using a screw; taking down the thick composite material from the outlet, conveying the thick composite material into a steel die of a working platform of an oil press or a hydraulic press and forcibly pressing; extruding: operating an extrusion device on the plastic granulator and extruding the softened recycled waste plastic to obtain a regenerated plastic; and granulating: operating a granulating device on the plastic granulator and cutting the extruded regenerated plastic into granules.
Description
Technical field
The present invention relates to a kind of preparation method of plastics, particularly a kind of preparation method of nano flame retardant plastics.
Background technology
As everyone knows, the polybag of making of plastic sheeting is light, thin, waterproof, intensity is large, cost is low, a kind of good packaging material, the use of polybag brings great convenience to people's life, make the consumption of polybag increasing, with waste plastic bag later, be difficult for reclaiming, being difficult for degraded, a large amount of waste plastic bags has become a serious problem of current contaminated environment.In order to alleviate the pollution of plastic sheeting to environment, people have developed some environment-friendly degradable plastic films, as: the patent No.: 200710144500.2, paper-simulating degradable plastic film and manufacture craft thereof; And the patent No.: 201110051187.4, the method for fully biodegradable plastic resin and film based article thereof.This class degradable plastic film, its constituent has the film-grade plastics and can cause the component that plastics produce degraded, as starch, calcium carbonate etc., this degradable plastic film is the addition type degradable plastic film, and the addition type degradable plastic film is to improve environment to have brought into play certain positive role.But processing performance plastic sheeting the physical property of product and the outward appearance bad, that make of this degradable plastic film processing are poor.
Biodegradable plastic is one of effective way of administering plastic refuse environmental pollution and buffering petroleum resources contradiction, from the packaging bag of food to agricultural film, arrive again the shell of electric equipment products, from non-returnable container, edible products to product durable in use, biodegradable plastic just progressively replaces the conventional plastic material, and market prospects are very wide.It is reported, the biodegradable plastic kind of global development is existing tens kinds at present, principal item has: the microorganism synthetic polyhydroxyalkanoate (PHA, PHB, PHBV etc.) that ferments, the PLA of chemical synthesis (PLA), polycaprolactone, dihydroxylic alcohols dicarboxylic acids aliphatic polyester (PBS), aliphatic/aromatic copolyester, CO2/ epoxy compound composition copolymer (APC), polycaprolactone (PCL), polyvinyl alcohol (PVA) etc., natural polymer starch plastics and biodegradable plastic blend, plastic alloy etc.The kind that has entered at present pilot scale or batch production has starch plastics, PHA (PHB, PHBV, PHBH-HX etc.), PLA, PBS, APC, modified PVA, starch/PVA, the plastic alloy such as PLA, PCL and blend etc.
In addition, the degraded of this degradable plastic film needs certain rigid condition, and the environment of plastic sheeting after discarded, done in the refuse disposal system of sealing, be exactly to be exposed in the unfixed natural environment of condition, very difficult guarantor levies the needed rigid condition of this degradation of plastic film, and no matter these degradative plastics in most of the cases, are because being subject to condition restriction, can not degrade well in refuse disposal system or at natural environment.In prior art, do not have can the environment after discarded in, guarantee the degradable plastic film of degraded.
Summary of the invention
The objective of the invention is, in order to overcome above-mentioned deficiency, to propose a kind of preparation method of recycled plastic granulation.
A kind of preparation method of nano flame retardant plastics, is characterized in that, comprises the following steps:
A, at first carry out the raw material processing: using regenerated plastics as raw material, be broken into sheet material after sorting, carry out drying and processing after washing, control the moisture content of material at 1%-4%, then material is delivered to a machine and carried out granule, material is gathered into to graininess, and the particle diameter size is between 0.3-2cm, and solid accumulation density reaches 600-1000kg/m3 and completes the raw material processing;
B, charging, will reclaim waste or used plastics and powdered whiting, organic solvent is put into plastic granulator, described organic solution with reclaim waste or used plastics and carry out catalytic reaction and fully stir, make it to mix and obtain composite;
C, described composite is input to screw electric smelting machine is heated and further mixes, the composite that becomes thick shape after heating is advanced to outlet by the screw rod rotation;
D, take off the composite of thick shape from outlet, add the nano flame retardant compound, be transported to by mold volumes in the steel die of hydraulic press or hydraulic press workbench and carry out the brute force compacting;
E, extrude, the pressurizing unit on the operation plastic granulator, extrude the recovery waste or used plastics after softening to obtain regenerated plastics;
F, granulation, the pellet device on the operation plastic granulator, be cut into graininess by the regenerated plastics of extruding.
Preparation method at the described nano flame retardant complexing agent of described steps d is:
(1) silicon hydroxyapatite, red phosphorus, concave convex rod, hydrotalcite, imvite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 25-35:15-20:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixed solution of 200 parts of methyl-sulfoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulfoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying chamber, dry 24 hours of 60 ℃ of temperature, grinding is sieved, and obtains the modified flame-retardant compound one time;
(2), 1 part of modified flame-retardant compound, 10 parts of potassium acetates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 2.5 hours, and then disperse 3 hours under ultrasonic electric power 250W condition.Filter, and wash 3 times with distillation, 80 ℃ of vacuum drying 24 hours, grinding is sieved, and obtains twice-modified fire-retardant compound;
(3), above-mentioned 1 part of twice-modified fire-retardant compound is disperseed to 40min at the 600W power ultrasonic, be heated to 90 ℃ with constant temperature heating device, and stir (1200r/min) 60 minutes with mechanical agitator; Obtain the nano flame retardant compound.
As further preferred, the size of described powdered whiting is 600 order to 1200 orders.
As further preferred, the temperature controlling range in the screw electric smelting machine of described step b is 160 ℃ to 240 ℃.
As further preferred, the particle diameter of described regenerated plastics is 3-6mm.
As further preferred, described organic solvent is trichloride antimony.
As further preferred, the time of described catalytic reaction is 15-35 minute.
As further preferably, before described step e) is extruded, can in raw material, add auxiliary material, and raw material and auxiliary material are uniformly mixed.
Described auxiliary material is any one or the several auxiliary agent in coupling agent, compatilizer, lubricant, dispersant, antioxidant, light stabilizer, mould inhibitor, blowing agent, fire retardant, colouring agent, flexibilizer, reinforcing agent.
The interpolation total amount of described auxiliary agent by weight, is calculated with raw material, adds 1-10wt%.
Described auxiliary material is calcium powder, and the addition of described calcium powder by weight, calculates with raw material, adds 5-20wt%.
By implementing above technical scheme, there is following technique effect: the invention provides regenerated plastics composite material hot-pressed formation technique, the regenerated plastics composite is processed and can be enhanced productivity, improve product surface smoothness (or flatness), improve toughness of products, save material, improve product heat resistance-40 ℃-80 ℃, improve the electrodeposit performance, environmental contamination reduction, the product of this explained hereafter is as handicraft, sculpture product, Bulb holder of table lamp, the desk lamp lamp stand, floral disc, photo frame, the garden fence, garden guard-rail, the beautiful handicraft of ripple, gift, furnishings, the Buddhist carving handicraft article, the quality raw materials that emulation animals and plants sculpture is made.
The specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described in detail, but the invention is not restricted to these embodiment:
Embodiment 1
A kind of preparation method of nano flame retardant plastics, is characterized in that, comprises the following steps:
At first carry out the raw material processing: using regenerated plastics as raw material, be broken into sheet material after sorting, carry out drying and processing after washing, control the moisture content of material at 1%-4%, then material is delivered to a machine and carried out granule, material is gathered into to graininess, and the particle diameter size is between 0.3-2cm, and solid accumulation density reaches 600-1000kg/m3 and completes the raw material processing;
Charging, will reclaim waste or used plastics and powdered whiting, organic solvent is put into plastic granulator, described organic solution with reclaim waste or used plastics and carry out catalytic reaction and fully stir, make it to mix and obtain composite;
Described composite is input to screw electric smelting machine is heated and further mixes, the composite that becomes thick shape after heating is advanced to outlet by the screw rod rotation;
Take off the composite of thick shape from outlet, add the nano flame retardant compound, be transported to by mold volumes in the steel die of hydraulic press or hydraulic press workbench and carry out the brute force compacting;
Extrude, the pressurizing unit on the operation plastic granulator, extrude the recovery waste or used plastics after softening to obtain regenerated plastics;
Granulation, the pellet device on the operation plastic granulator, be cut into graininess by the regenerated plastics of extruding.
High tenacity regenerated plastics composite-material formula: regenerated plastics 70%-80%, powdered whiting 20%-30%;
Inferior high tenacity regenerated plastics composite-material formula: regenerated plastics 60%-70%, powdered whiting 30%-40%;
Middle toughness regenerated plastics composite-material formula: regenerated plastics 50%-60%, powdered whiting 40%-50%;
Inferior middle toughness regenerated plastics composite-material formula: regenerated plastics 40%-50%, powdered whiting 50%-60%;
Low toughness regenerated plastics composite-material formula: regenerated plastics 30%-40%, powdered whiting 60%-70%;
As further preferred, the size of described powdered whiting is 600 order to 1200 orders.
As further preferred, the temperature controlling range in the screw electric smelting machine of described step b is 160 ℃ to 240 ℃.
As further preferred, the particle diameter of described regenerated plastics is 3-6mm.
As further preferred, described organic solvent is trichloride antimony.
As further preferred, the time of described catalytic reaction is 15-35 minute.
As further preferably, before described step e) is extruded, can in raw material, add auxiliary material, and raw material and auxiliary material are uniformly mixed.
Described auxiliary material is any one or the several auxiliary agent in coupling agent, compatilizer, lubricant, dispersant, antioxidant, light stabilizer, mould inhibitor, blowing agent, fire retardant, colouring agent, flexibilizer, reinforcing agent.
The interpolation total amount of described auxiliary agent by weight, is calculated with raw material, adds 1-10wt%.
Described auxiliary material is calcium powder, and the addition of described calcium powder by weight, calculates with raw material, adds 5-20wt%.
Preparation method at the described nano flame retardant complexing agent of described steps d is:
(1) silicon hydroxyapatite, red phosphorus, concave convex rod, hydrotalcite, imvite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 25-35:15-20:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixed solution of 200 parts of methyl-sulfoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulfoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying chamber, dry 24 hours of 60 ℃ of temperature, grinding is sieved, and obtains the modified flame-retardant compound one time;
(2), 1 part of modified flame-retardant compound, 10 parts of potassium acetates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 2.5 hours, and then disperse 3 hours under ultrasonic electric power 250W condition.Filter, and wash 3 times with distillation, 80 ℃ of vacuum drying 24 hours, grinding is sieved, and obtains twice-modified fire-retardant compound;
(3), above-mentioned 1 part of twice-modified fire-retardant compound is disperseed to 40min at the 600W power ultrasonic, be heated to 90 ℃ with constant temperature heating device, and stir (1200r/min) 60 minutes with mechanical agitator; Obtain the nano flame retardant compound.
Above-described embodiment only, for explanation technical conceive of the present invention and characteristics, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. the preparation method of a nano flame retardant plastic granulating, is characterized in that, comprises the following steps:
A, at first carry out the raw material processing: using regenerated plastics as raw material, be broken into sheet material after sorting, carry out drying and processing after washing, control the moisture content of material at 1%-4%, then material is delivered to a machine and carried out granule, material is gathered into to graininess, and the particle diameter size is between 0.3-2cm, and solid accumulation density reaches 600-1000kg/m3 and completes the raw material processing;
B, charging, will reclaim waste or used plastics and powdered whiting, organic solvent is put into plastic granulator, described organic solution with reclaim waste or used plastics and carry out catalytic reaction and fully stir, make it to mix and obtain composite;
C, described composite is input to screw electric smelting machine is heated and further mixes, the composite that becomes thick shape after heating is advanced to outlet by the screw rod rotation;
D, take off the composite of thick shape from outlet, add the nano flame retardant compound, be transported to by mold volumes in the steel die of hydraulic press or hydraulic press workbench and carry out the brute force compacting;
E, extrude, the pressurizing unit on the operation plastic granulator, extrude the recovery waste or used plastics after softening to obtain regenerated plastics;
F, granulation, the pellet device on the operation plastic granulator, be cut into graininess by the regenerated plastics of extruding.
2. preparation method as claimed in claim 1, is characterized in that, the size of described powdered whiting is 600 order to 1200 orders.
3. the described preparation method of claim 1 or 2, is characterized in that, the temperature controlling range in the screw electric smelting machine of described step b is 160 ℃ to 240 ℃.
4. the preparation method of recycled plastic granulation according to claim 1, is characterized in that, the particle diameter of described regenerated plastics is 3-6mm.
5. the preparation method of recycled plastic granulation according to claim 1, is characterized in that, described organic solvent is trichloride antimony.
6. the preparation technology of recycled plastic granulation according to claim 1, is characterized in that, the time of described catalytic reaction is 15-35 minute.
7. the preparation technology of recycled plastic granulation according to claim 1, is characterized in that, before described step e) is extruded, can in raw material, add auxiliary material, and raw material and auxiliary material are uniformly mixed.
8. the preparation technology of recycled plastic granulation according to claim 7, is characterized in that, the temperature controlling range in the screw electric smelting machine of described step c is 160 ℃ to 240 ℃.
9. according to the described preparation method of claim 1 or 2, it is characterized in that, in the preparation method of the described nano flame retardant complexing agent of described steps d be:
(1) silicon hydroxyapatite, red phosphorus, concave convex rod, hydrotalcite, imvite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 25-35:15-20:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixed solution of 200 parts of methyl-sulfoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulfoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying chamber, dry 24 hours of 60 ℃ of temperature, grinding is sieved, and obtains the modified flame-retardant compound one time;
(2), 1 part of modified flame-retardant compound, 10 parts of potassium acetates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 2.5 hours, and then disperse 3 hours under ultrasonic electric power 250W condition.
10. filter, and wash 3 times with distillation, 80 ℃ of vacuum drying 24 hours, grinding is sieved, and obtains twice-modified fire-retardant compound;
(3), above-mentioned 1 part of twice-modified fire-retardant compound is disperseed to 40min at the 600W power ultrasonic, be heated to 90 ℃ with constant temperature heating device, and stir (1200r/min) 60 minutes with mechanical agitator; Obtain the nano flame retardant compound.
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| CN109181047A (en) * | 2018-06-21 | 2019-01-11 | 四川塑金科技有限公司 | A kind of preparation method regenerating nanometer flame retardant plastic |
| CN112194836A (en) * | 2020-10-20 | 2021-01-08 | 安徽环嘉天一再生资源有限公司 | Flame-retardant nano recycled plastic and preparation method thereof |
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| CN103496047B (en) | 2016-03-30 |
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