CN103496047B - A kind of preparation method of nanometer flame retardant plastic - Google Patents
A kind of preparation method of nanometer flame retardant plastic Download PDFInfo
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- CN103496047B CN103496047B CN201310430982.3A CN201310430982A CN103496047B CN 103496047 B CN103496047 B CN 103496047B CN 201310430982 A CN201310430982 A CN 201310430982A CN 103496047 B CN103496047 B CN 103496047B
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
A kind of nanometer flame retardant plastic, it is characterized in that, comprise the following steps: charging, recovery waste or used plastics and powdered whiting, organic solvent are put into plastic granulator, described organic solution is carried out catalytic reaction with recovery waste or used plastics and fully stirs, and makes it to mix to obtain composite; Described composite is input to screw electric smelting machine to carry out heating and mixing further, the composite becoming thick shape after heating is rotated by screw rod and is advanced to outlet; Take off the composite of thick shape from outlet, carry out brute force in the steel die being transported to hydraulic press or hydraulic press workbench by mold volumes and suppress; Extrude, run the pressurizing unit on plastic granulator, the recovery waste or used plastics after softening is extruded and obtains regenerated plastics; Granulation, runs the pellet device on plastic granulator, the regenerated plastics extruded is cut into graininess.
Description
Technical field
The present invention relates to a kind of preparation method of plastics, particularly a kind of preparation method of nanometer flame retardant plastic.
Background technology
As everyone knows, the polybag made of plastic sheeting is light, thin, waterproof, intensity is comparatively large, cost is low, a kind of well packaging material, the use of polybag brings great convenience to the life of people, make the consumption of polybag increasing, not easily reclaim with waste plastic bag later, not easily degrade, a large amount of waste plastic bags has become the serious problem of of current contamination 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 kind of degradable plastic film, its constituent has film-grade plastics and can cause the component that plastics produce degraded, as starch, calcium carbonate etc., this degradable plastic film is addition type degradable plastic film, and addition type degradable plastic film is that environmental protect has played certain positive role.But the plastic sheeting the physical property of product that the processing performance of this degradable plastic film processing is bad, make and outward appearance 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 the shell of electric equipment products again, from non-returnable container, edible products to product durable in use, biodegradable plastic just progressively replaces conventional plastic materials, and market prospects are very wide.It is reported, existing tens kinds of the biodegradable plastic kind of current global development, principal item has: the polyhydroxyalkanoate (PHA, PHB, PHBV etc.) of fermentable synthesis, the PLA (PLA), polycaprolactone, dihydroxylic alcohols dicarboxylic acids aliphatic polyester (PBS), aliphatic/aromatic copolyester, CO2/ epoxy compound composition copolymer (APC), polycaprolactone (PCL), polyvinyl alcohol (PVA) etc. of chemical synthesis, natural polymer starch plastics and biodegradable plastic blend, plastic alloy etc.The kind having entered at present pilot scale or batch production has starch plastics, PHA(PHB, PHBV, PHBH-HX etc.), PLA, PBS, APC, modified PVA, the starch/plastic alloy such as PVA, PLA, PCL and blend etc.
In addition, the degraded of this degradable plastic film needs certain rigid condition, and plastic sheeting discard after environment, done in the refuse disposal system closed, be exactly be exposed in the unfixed natural environment of condition, very difficult guarantor levies the rigid condition required for this degradation of plastic film, and no matter these degradative plastics in most of the cases, are because can not degrade well by condition restriction in refuse disposal system or at natural environment.In prior art, do not have in the environment after discarded, the degradable plastic film of degraded to be ensured.
Summary of the invention
The object of the invention is, in order to overcome above-mentioned deficiency, to propose a kind of preparation method of recycled plastic granulation.
A preparation method for nanometer flame retardant plastic, is characterized in that, comprises the following steps:
A, first carry out Feedstock treating: using regenerated plastics as raw material, sheet material is broken into after sorting, drying and processing is carried out after washing, control the moisture content of material at 1%-4%, then material is delivered to a machine and carry out granule, material is gathered into graininess, and particle diameter size is between 0.3-2cm, and solid accumulation density reaches 600-1000kg/m3 and completes Feedstock treating;
B, charging, put into plastic granulator by recovery waste or used plastics and powdered whiting, organic solvent, and described organic solvent carries out catalytic reaction with recovery waste or used plastics and fully stirs, and makes it to mix to obtain composite;
C, described composite is input to screw electric smelting machine carries out heating and mixing further, the composite becoming thick shape after heating is rotated by screw rod and is advanced to outlet;
D, take off the composite of thick shape from outlet, add nano flame retardant compound, carry out brute force in the steel die being transported to hydraulic press or hydraulic press workbench by mold volumes and suppress;
E, to extrude, run the pressurizing unit on plastic granulator, the recovery waste or used plastics after softening is extruded and obtains regenerated plastics;
F, granulation, run the pellet device on plastic granulator, the regenerated plastics extruded be cut into graininess.
The preparation method of the nano flame retardant complexing agent described in described steps d is:
(1) silicone hydroxyl apatite, 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, stir 60 hours in 65 DEG C, filter, and wash the excessive methyl-sulfoxide (DMSO) of 3 removings with the hot ethanol of 60 DEG C of temperature, put into vacuum drying chamber, 60 DEG C of temperature dryings 24 hours, grinding is sieved, and obtains a modified flame-retardant compound;
(2), by 1 part of modified flame-retardant compound, 10 parts of potassium acetates and 25 parts of distilled water mixing, more than 10 hours are stirred in temperature 50 C, in temperature 30 DEG C, first disperse 2.5 hours under ultrasonic electric power 350W condition, and then disperse 3 hours under ultrasonic electric power 250W condition.To filter, and with distilling washing 3 times, 80 DEG C of vacuum drying 24 hours, grinding is sieved, and obtains twice-modified flame-retardant compounds;
(3), by above-mentioned 1 part of twice-modified flame-retardant compounds at 600W power ultrasonic dispersion 40min, be heated to 90 DEG C with constant temperature heating device, and stir (1200r/min) 60 minutes with mechanical agitator; Obtain nano flame retardant compound.
As preferred further, the size of described powdered whiting is 600 order to 1200 orders.
As preferred further, the temperature controlling range in the screw electric smelting machine of described step c is 160 DEG C to 240 DEG C.
As preferred further, the particle diameter of described regenerated plastics is 3-6mm.
As preferred further, described organic solvent is trichloride antimony.
As preferred further, the time of described catalytic reaction is 15-35 minute.
As further preferably, before described step e) is extruded, auxiliary material can be added in the feed, and raw material and auxiliary material are uniformly mixed.
Described auxiliary material is any one or 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, calculates 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, regenerated plastics composite is carried out processing can enhance productivity, improve product surface smoothness (or flatness), improve toughness of products, save material, improve product heat resistance-40 DEG C-80 DEG C, improve electrodeposit performance, reduce environmental pollution, the product of this explained hereafter is as handicraft, sculpture product, Bulb holder of table lamp, desk lamp lamp stand, floral disc, photo frame, garden fence, garden guard-rail, the beautiful handicraft of ripple, gift, furnishings, Buddhist carving handicraft article, the quality raw materials that emulation animals and plants sculpture makes.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described in detail, but the invention is not restricted to these embodiments:
Embodiment 1
A preparation method for nanometer flame retardant plastic, is characterized in that, comprises the following steps:
First Feedstock treating is carried out: using regenerated plastics as raw material, sheet material is broken into after sorting, drying and processing is carried out after washing, control the moisture content of material at 1%-4%, then material is delivered to a machine and carry out granule, material is gathered into graininess, and particle diameter size is between 0.3-2cm, and solid accumulation density reaches 600-1000kg/m3 and completes Feedstock treating;
Charging, puts into plastic granulator by recovery waste or used plastics and powdered whiting, organic solvent, and described organic solvent carries out catalytic reaction with recovery waste or used plastics and fully stirs, and makes it to mix to obtain composite;
Described composite is input to screw electric smelting machine to carry out heating and mixing further, the composite becoming thick shape after heating is rotated by screw rod and is advanced to outlet;
Take off the composite of thick shape from outlet, add nano flame retardant compound, carry out brute force in the steel die being transported to hydraulic press or hydraulic press workbench by mold volumes and suppress;
Extrude, run the pressurizing unit on plastic granulator, the recovery waste or used plastics after softening is extruded and obtains regenerated plastics;
Granulation, runs the pellet device on plastic granulator, the regenerated plastics extruded is cut into graininess.
High tenacity regenerated plastics composite-material formula: regenerated plastics 70%-80%, powdered whiting 20%-30%;
Secondary 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%;
Secondary 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 preferred further, the size of described powdered whiting is 600 order to 1200 orders.
As preferred further, the temperature controlling range in the screw electric smelting machine of described step c is 160 DEG C to 240 DEG C.
As preferred further, the particle diameter of described regenerated plastics is 3-6mm.
As preferred further, described organic solvent is trichloride antimony.
As preferred further, the time of described catalytic reaction is 15-35 minute.
As further preferably, before described step e) is extruded, auxiliary material can be added in the feed, and raw material and auxiliary material are uniformly mixed.
Described auxiliary material is any one or 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, calculates 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%.
The preparation method of the nano flame retardant complexing agent described in described steps d is:
(1) silicone hydroxyl apatite, 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, stir 60 hours in 65 DEG C, filter, and wash the excessive methyl-sulfoxide (DMSO) of 3 removings with the hot ethanol of 60 DEG C of temperature, put into vacuum drying chamber, 60 DEG C of temperature dryings 24 hours, grinding is sieved, and obtains a modified flame-retardant compound;
(2), by 1 part of modified flame-retardant compound, 10 parts of potassium acetates and 25 parts of distilled water mixing, more than 10 hours are stirred in temperature 50 C, in temperature 30 DEG C, first disperse 2.5 hours under ultrasonic electric power 350W condition, and then disperse 3 hours under ultrasonic electric power 250W condition.To filter, and with distilling washing 3 times, 80 DEG C of vacuum drying 24 hours, grinding is sieved, and obtains twice-modified flame-retardant compounds;
(3), by above-mentioned 1 part of twice-modified flame-retardant compounds at 600W power ultrasonic dispersion 40min, be heated to 90 DEG C with constant temperature heating device, and stir (1200r/min) 60 minutes with mechanical agitator; Obtain nano flame retardant compound.
Above-described embodiment only for technical conceive of the present invention and feature are described, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. a preparation method for nanometer flame retardant plastic granulation, is characterized in that, comprises the following steps:
A, first carry out Feedstock treating: using regenerated plastics as raw material, sheet material is broken into after sorting, drying and processing is carried out after washing, control the moisture content of material at 1%-4%, then material is delivered to a machine and carry out granule, material is gathered into graininess, and particle diameter size is between 0.3-2cm, and solid accumulation density reaches 600-1000kg/m3 and completes Feedstock treating;
B, charging, put into plastic granulator by recovery waste or used plastics and powdered whiting, organic solvent, and described organic solvent carries out catalytic reaction with recovery waste or used plastics and fully stirs, and makes it to mix to obtain composite;
C, described composite is input to screw electric smelting machine carries out heating and mixing further, the composite becoming thick shape after heating is rotated by screw rod and is advanced to outlet;
D, take off the composite of thick shape from outlet, add nano flame retardant compound, carry out brute force in the steel die being transported to hydraulic press or hydraulic press workbench by mold volumes and suppress;
E, to extrude, run the pressurizing unit on plastic granulator, the recovery waste or used plastics after softening is extruded and obtains regenerated plastics;
F, granulation, run the pellet device on plastic granulator, the regenerated plastics extruded be cut into graininess;
The preparation method of described nano flame retardant compound is:
(1) silicone hydroxyl apatite, 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 and 50 parts of methyl alcohol, stir 60 hours in 65 DEG C, filter, and wash the excessive methyl-sulfoxide of 3 removings with the hot ethanol of 60 DEG C of temperature, put into vacuum drying chamber, 60 DEG C of temperature dryings 24 hours, grinding is sieved, and obtains a modified flame-retardant compound;
(2) by 1 part of modified flame-retardant compound, 10 parts of potassium acetates and 25 parts of distilled water mixing, more than 10 hours are stirred in temperature 50 C, in temperature 30 DEG C, first disperse 2.5 hours under ultrasonic electric power 350W condition, and then disperse 3 hours under ultrasonic electric power 250W condition; To filter, and with distilling washing 3 times, 80 DEG C of vacuum drying 24 hours, grinding is sieved, and obtains twice-modified flame-retardant compounds;
(3) above-mentioned 1 part of twice-modified flame-retardant compounds is disperseed 40min at 600W power ultrasonic, be heated to 90 DEG C with constant temperature heating device, and stir 60 minutes with mechanical agitator with the speed of 1200r/min; Obtain nano flame retardant compound.
2. the preparation method of nanometer flame retardant plastic granulation according to claim 1, is characterized in that, the size of described powdered whiting is 600 order to 1200 orders.
3. the preparation method of nanometer flame retardant plastic granulation according to claim 1, is characterized in that, the particle diameter of described regenerated plastics is 3-6mm.
4. the preparation method of nanometer flame retardant plastic granulation according to claim 1, is characterized in that, the time of described catalytic reaction is 15-35 minute.
5. the preparation method of nanometer flame retardant plastic granulation according to claim 1, is characterized in that, before described step e extrudes, adds auxiliary material in the feed, and raw material and auxiliary material is uniformly mixed.
6. the preparation method of nanometer flame retardant plastic granulation according to claim 1, is characterized in that, the temperature controlling range in the screw electric smelting machine of described step c is 160 DEG C to 240 DEG C.
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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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