CN103613875B - Salt is washed and is sunk to the bottom the modification of PS feed back and produce fire-retardant PS and preparation method thereof - Google Patents
Salt is washed and is sunk to the bottom the modification of PS feed back and produce fire-retardant PS and preparation method thereof Download PDFInfo
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- CN103613875B CN103613875B CN201310588083.6A CN201310588083A CN103613875B CN 103613875 B CN103613875 B CN 103613875B CN 201310588083 A CN201310588083 A CN 201310588083A CN 103613875 B CN103613875 B CN 103613875B
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Abstract
The invention discloses a kind of salt washes and sinks to the bottom the modification of PS feed back and produce fire-retardant PS, relate to the regeneration of plastics, made by following composition: salt is washed and sunk to the bottom PS feed back? 65-85 weight portion, ten bromine ring diphenylethane 6-12 weight portions, antimony oxide? 2-4 weight portion, SBS? 5-15? weight portion and calcium stearate? 0.1-0.5. Compared with the existing, the salt of the present invention protection is washed the performance that sinks to the bottom the modification of PS feed back and produce fire-retardant PS performance and can reach completely conventional fire-retardant PS, can replace the fire-retardant PS that virgin material is produced completely, not only reduces costs, and has also improved technics of reclaim of plastic waste rate.
Description
Technical field
The present invention relates to a kind of salt washes and sinks to the bottom the modification of PS feed back and produce fire-retardant PS and preparation method thereof.
Background technology
In the time reclaiming PS waste or used plastics goods, generally all to carry out certain density salt solution to PS and carry out rinsing, float over saltThe good reclaimed materials of waterborne uses, and is deposited in salt PS under water because other impurity such as metal, silt particle are contained in the inside, and quiltDirectly throw away or bury as rubbish, this this part salt is washed to sink to the bottom to expect to account for and is reclaimed PS20%, finally very can with garbage disposalCherish, simultaneously contaminated environment.
Do not recycle at present this class salt and wash the reason that sinks to the bottom PS feed back and have three, one be because metal and silt particleMany; Another, contain other plastics that are not partly fused to PS; PS price after the 3rd toughening modifying is much higher than virgin material valencyLattice, therefore this part PS waste material is directly regarded garbage bury processing by most people workshop.
Summary of the invention
One of object of the present invention is just to provide a kind of salt to wash to sink to the bottom the modification of PS feed back produces fire-retardant PS, and this salt is washed and sunk to the bottomThe performance of conventional fire-retardant PS is produced fire-retardant PS performance and can be reached completely in the modification of PS feed back, can replace the resistance that virgin material is produced completelyCombustion PS, not only reduces costs, and has also improved technics of reclaim of plastic waste rate.
Technical scheme is: a kind of salt is washed and sunk to the bottom the modification of PS feed back and produce fire-retardant PS, and this salt is washed and sunk to the bottom the modification of PS feed back and produceFire-retardant PS is made up of following composition:
Salt is washed and is sunk to the bottom PS feed back 65-85 weight portion
Ten bromine ring diphenylethane 6-12 weight portions
Antimony oxide 2-4 weight portion
SBS5-15 weight portion
With calcium stearate 0.1-0.5.
Two of object of the present invention is to provide a kind of above-mentioned salt to wash and sinks to the bottom the preparation side that fire-retardant PS is produced in the modification of PS feed backMethod.
Technical scheme is: a kind ofly prepare above-mentioned salt and wash and sink to the bottom the method that fire-retardant PS is produced in the modification of PS feed back, comprise following stepRapid:
Step 1: salt is washed and sunk to the bottom PS feed back and go out and extrude, cross 100 stainless steel screen pack granulations, 180 ~ 190 DEG C of temperature;
Step 2: it is heavy that the salt of then getting ten bromine ring diphenylethanes, antimony oxide, SBS, calcium stearate and step 1 is washedPS feed back in the end mixes;
Step 3: extrusion plasticizing granulation;
Step 4: by particle drying, packaging.
As preferably, in described step 3, Screw Extrusion temperature 180-190 DEG C, engine speed 35Hz.
Inventive principle and beneficial effect:
In the time reclaiming PS feed back, produce a large amount of salt and wash and sink to the bottom PS feed back, account for PS waste or used plastics 20% left and right, it is heavy that salt is washedPS feed back in the end has carried out a large amount of performance datas to be collected and finds that 95% salt is washed and sink to the bottom PS feed back and contain the fire retardant that 5-10% does not wait, andFire retardant did not lose efficacy. When washing with this class salt when sinking to the bottom PS feed back and carrying out common toughening modifying, cost exceeds new HIPS, cityField is difficult to accept. The present invention's skilful use contains 5-10% fire retardant PS, produces black flame-retardant PS, and its added value increases substantially. Per tonFire retardant price generally more than 20,000 yuan, on market black flame-retardant PS price 16000 yuan per ton, toughening modifying HIPS price9000 yuan of left and right per ton. And general salt is washed into bed material flame retardant agent content in 6% left and right.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment 1 salt is washed and is sunk to the bottom the preparation that fire-retardant PS is produced in the modification of PS feed back
Step 1: salt is washed and sunk to the bottom PS feed back 76 weight portions, cross 100 stainless steel screen pack granulations, 180 ~ 190 DEG C of temperature.
Step 2: then get ten bromine ring diphenylethane 9 weight portions, antimony oxide 3 weight portions, SBS12 weight portion,Calcium stearate 0.2 weight portion and the salt of step 1 are washed and are sunk to the bottom PS feed back and mix.
Step 3: extrusion plasticizing granulation, extruder temperature 180-190 DEG C, engine speed 35Hz.
Step 4: by particle drying, packaging.
Embodiment 2
The product that embodiment 1 is produced and other PS carry out respectively Performance Detection,
Table one
| Sequence number | Test item | Salt is washed and is sunk to the bottom PS feed back | The fire-retardant PS of the present invention | Conventional fire-retardant PS | Detection method |
| 1 | Elongation at break % | 3 | 35 | 15~50 | GB/T 1040 |
| 2 | Cantilever beam notch shock KJ/m2 | 1.5 | 8 | 5~10 | GB/T 1843 |
| 3 | Flame retardant rating | Non-fire-retardant | V-0 | V-0 | UL94 |
| 4 | Outward appearance | Coarse, weld mark, salient point | Without obvious scratches | Smooth | Range estimation |
As can be seen from Table I, wash and sink to the bottom PS feed back and produce fire-retardant PS as raw material with salt, its performance can reach completelyThe performance of conventional fire-retardant PS, can replace the fire-retardant PS that virgin material is produced completely, not only reduces costs, and has also improved waste or used plastics and has returnedYield.
Claims (3)
1. salt is washed and is sunk to the bottom the modification of PS feed back and produce a fire-retardant PS, and this salt is washed and sunk to the bottom the modification of PS feed back and produce fire-retardant PS by becoming belowPart is made:
Salt is washed and is sunk to the bottom PS feed back 65-85 weight portion
Ten bromine ring diphenylethane 6-12 weight portions
Antimony oxide 2-4 weight portion
SBS5-15 weight portion
With calcium stearate 0.1-0.5.
2. prepare salt claimed in claim 1 and wash and sink to the bottom the method that fire-retardant PS is produced in the modification of PS feed back, comprise the following steps:
Step 1: salt is washed and sunk to the bottom PS feed back and go out and extrude, cross 100 stainless steel screen pack granulations, 180 ~ 190 DEG C of temperature;
Step 2: the salt of then getting ten bromine ring diphenylethanes, antimony oxide, SBS, calcium stearate and step 1 is washed and sunk to the bottom PSFeed back mixes;
Step 3: extrusion plasticizing granulation;
Step 4: by particle drying, packaging.
3. salt according to claim 2 is washed and is sunk to the bottom the method that fire-retardant PS is produced in the modification of PS feed back, it is characterized in that: described stepIn rapid three, Screw Extrusion temperature 180-190 DEG C, engine speed 35Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588083.6A CN103613875B (en) | 2013-11-21 | 2013-11-21 | Salt is washed and is sunk to the bottom the modification of PS feed back and produce fire-retardant PS and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588083.6A CN103613875B (en) | 2013-11-21 | 2013-11-21 | Salt is washed and is sunk to the bottom the modification of PS feed back and produce fire-retardant PS and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103613875A CN103613875A (en) | 2014-03-05 |
| CN103613875B true CN103613875B (en) | 2016-05-25 |
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| CN201310588083.6A Active CN103613875B (en) | 2013-11-21 | 2013-11-21 | Salt is washed and is sunk to the bottom the modification of PS feed back and produce fire-retardant PS and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521207A (en) * | 2003-01-27 | 2004-08-18 | 广州金发科技股份有限公司 | Halide-free flame-resistant high anti-impact polystyrene complex and method for production thereof |
| CN101531790A (en) * | 2008-03-13 | 2009-09-16 | 深圳市亚塑科技有限公司 | Method for preparing high-toughness slow-burning HIPS compound by using PS recycled materials |
| CN102731920A (en) * | 2012-07-04 | 2012-10-17 | 太原理工大学 | Compounding flame retardation polystyrene composition and preparation method thereof |
-
2013
- 2013-11-21 CN CN201310588083.6A patent/CN103613875B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521207A (en) * | 2003-01-27 | 2004-08-18 | 广州金发科技股份有限公司 | Halide-free flame-resistant high anti-impact polystyrene complex and method for production thereof |
| CN101531790A (en) * | 2008-03-13 | 2009-09-16 | 深圳市亚塑科技有限公司 | Method for preparing high-toughness slow-burning HIPS compound by using PS recycled materials |
| CN102731920A (en) * | 2012-07-04 | 2012-10-17 | 太原理工大学 | Compounding flame retardation polystyrene composition and preparation method thereof |
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| CN103613875A (en) | 2014-03-05 |
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