CN103613875A - Flame-retardant PS (polystyrene) produced by modification of PS return material settled to bottom by salt washing and preparation method thereof - Google Patents
Flame-retardant PS (polystyrene) produced by modification of PS return material settled to bottom by salt washing and preparation method thereof Download PDFInfo
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- CN103613875A CN103613875A CN201310588083.6A CN201310588083A CN103613875A CN 103613875 A CN103613875 A CN 103613875A CN 201310588083 A CN201310588083 A CN 201310588083A CN 103613875 A CN103613875 A CN 103613875A
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Abstract
The invention discloses flame-retardant PS (polystyrene) produced by modification of a PS return material settled to bottom by salt washing, relating to regeneration of plastics. The flame-retardant PS is prepared from the following components: 65-85 parts by weight of PS return material settled to the bottom by salt washing, 6-12 parts by weight of decabromo-cyclo-diphenylethane, 2-4 parts by weight of antimony trioxide, 5-15 parts by weight of SBS (styrene butadiene styrene) and 0.1-0.5 part of calcium stearate. Compared with the prior art, the performances of the flame-retardant PS produced by modification of the PS return material settled to the bottom by salt washing, protected by the invention, can achieve the performances of the conventional flame-retardant PS, and the flame-retardant PS can completely replace the flame-retardant PS produced by new materials, thereby reducing the cost and improving the recovery rate of waste and old plastics.
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
When reclaiming PS waste or used plastics goods, generally all to carry out certain density salt solution to PS and carry out rinsing, the good reclaimed materials floating over above salt solution uses, and be deposited in salt PS under water because other impurity such as metal, silt particle are contained in the inside, and directly as rubbish, thrown away or bury, this this part salt is washed to sink to the bottom to expect to account for and is reclaimed PS20%, finally very unfortunate with refuse treatment, simultaneously contaminate 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 is because metal and silt particle are more; Another, contain other plastics that part is not fused to PS; PS price after the 3rd toughening modifying is much higher than virgin material price, so most people workshop directly processes this part PS waste material as garbage bury.
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, this salt is washed and is sunk to the bottom the modification of PS feed back and produce fire-retardant PS performance and can reach the performance of conventional fire-retardant PS completely, can replace the fire-retardant PS that virgin material is produced completely, not only reduce costs, 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 produce fire-retardant PS and made by following composition:
Salt is washed and is sunk to the bottom PS feed back 65-85 weight part
Ten bromine ring diphenylethane 6-12 weight parts
Antimonous oxide 2-4 weight part
SBS 5-15 weight part
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 method that fire-retardant PS is produced in the modification of PS feed back.
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 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 filtering net granulations, 180 ~ 190 ℃ of temperature;
Step 2: then get ten bromine ring diphenylethanes, antimonous oxide, SBS, calcium stearate and the salt of step 1 and wash and sink to the bottom PS feed back and mix;
Step 3: extrusion plasticizing granulation;
Step 4: by particle drying, packing.
As preferably, in described step 3, Screw Extrusion temperature 180-190 ℃, engine speed 35Hz.
Inventive principle and beneficial effect:
When reclaiming PS feed back, producing a large amount of salt washes and sinks to the bottom PS feed back, account for PS waste or used plastics 20% left and right, salt is washed and sunk to the bottom PS feed back and carried out a large amount of performance datas and collect and find that 95% salt is washed and sink to the bottom PS feed back and contain the fire retardant that 5-10% does not wait, and fire 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, and market 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.Fire retardant price per ton is generally more than 20,000 yuan, on market black flame-retardant PS price 16000 yuan per ton, toughening modifying HIPS price is 9000 yuan of left and right per ton.And general salt is washed into bed material flame retardant agent content in 6% left and right.
Embodiment
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 parts, cross 100 stainless steel filtering net granulations, 180 ~ 190 ℃ of temperature.
Step 2: then get ten bromine ring diphenylethane 9 weight parts, antimonous oxide 3 weight parts, SBS 12 weight parts, calcium stearate 0.2 weight part and the salt of step 1 and wash and sink to the bottom PS feed back and mix.
Step 3: extrusion plasticizing granulation, extruder temperature 180-190 ℃, engine speed 35Hz.
Step 4: by particle drying, packing.
Embodiment 2
Product and other PS that embodiment 1 is produced 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 | Socle girder 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, with salt, wash and sink to the bottom PS feed back as the fire-retardant PS of raw material production, its performance can reach the performance of conventional fire-retardant PS completely, 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.
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 and made by following composition:
Salt is washed and is sunk to the bottom PS feed back 65-85 weight part
Ten bromine ring diphenylethane 6-12 weight parts
Antimonous oxide 2-4 weight part
SBS 5-15 weight part
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 filtering net granulations, 180 ~ 190 ℃ of temperature;
Step 2: then get ten bromine ring diphenylethanes, antimonous oxide, SBS, calcium stearate and the salt of step 1 and wash and sink to the bottom PS feed back and mix;
Step 3: extrusion plasticizing granulation;
Step 4: by particle drying, packing.
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: in described step 3, and Screw Extrusion temperature 180-190 ℃, 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 |
|---|---|
| CN103613875A true CN103613875A (en) | 2014-03-05 |
| CN103613875B CN103613875B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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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 |
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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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| Publication number | Publication date |
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| CN103613875B (en) | 2016-05-25 |
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