CN1133689C - Method of foaming polystyrene to produce polystyrene products - Google Patents
Method of foaming polystyrene to produce polystyrene products Download PDFInfo
- Publication number
- CN1133689C CN1133689C CNB001025732A CN00102573A CN1133689C CN 1133689 C CN1133689 C CN 1133689C CN B001025732 A CNB001025732 A CN B001025732A CN 00102573 A CN00102573 A CN 00102573A CN 1133689 C CN1133689 C CN 1133689C
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- CN
- China
- Prior art keywords
- polystyrene
- weight
- solvent
- lysate
- foamed
- Prior art date
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Classifications
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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
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The present invention relates to a method of preparing products in the class of polystyrene by utilizing waste foamed polystyrene. Styrene and petrol are first mixed to prepare a solvent; then, foamed polystyrene is added and dissolved into a solution. If the solution is directly heated for volatilizing the solvent, the polystyrene of a universal stage will be obtained. If the solvent is volatilized in a heating mode after butadienestyrene latex or butadienestyrene dry rubber are first added into the solution for mixing, polystyrene of an impact type will be obtained. The present invention has the advantages of simple manufacturing technique and strong practicability; the present invention can effectively solve the environmental pollution generated by waste foamed polystyrene and change waste into valuables.
Description
Technical field
The present invention relates to a kind of method of utilizing waste foamed poly styrene modification utilization to produce polystyrene products.
Background technology
There is the people to adopt the limonene of Orange Peel to dissolve polystyrene foamed in Japan, and makes General Purpose Polystyrenre.But limonene is a kind of expensive spices, also is difficult on the market buying, and this method is difficult to practical application.A large amount of depleted polystyrene foameds are arranged in our daily life, cause serious environmental to pollute, how to utilize these waste foamed poly styrenes to produce polystyrene products, still lack effective means.
Summary of the invention
Purpose of the present invention is exactly the deficiency that overcomes above-mentioned prior art, provides a kind of simple and practical waste foamed poly styrene that utilizes to produce the method for polystyrene products.
The object of the invention realizes by following approach: make the vinylbenzene mixed solvent with adding gasoline in the vinylbenzene, polystyrene foamed is put into the solvent dissolving again and made the polystyrene lysate.Make General Purpose Polystyrenre or impingement polystyrene then respectively.
The inventive method is:
1, vinylbenzene and gasoline are mixed and made into the vinylbenzene mixed solvent, stand-by; Gasoline adopts the above white gasoline of 93#, and the 10-20 that gasoline is by volume measured to the volume of styrene amount extraordinarily goes into.
2, polystyrene foamed is added in the vinylbenzene mixed solvent successively, dissolved separating made the polystyrene lysate, and polystyrene foamed is extraordinarily gone into for the 0.6-3.2 of weight of solvent by weight.
The method of making General Purpose Polystyrenre is:
3, the polystyrene lysate is heated to 180-220 ℃ under normal pressure, heated 60-70 minute, solvent evaporates is fallen, carry-over is General Purpose Polystyrenre.General Purpose Polystyrenre can directly enter forcing machine and make silk, and further sends into the tablets press granulation, makes the General Purpose Polystyrenre pellet.Solvent is recyclable to be used again.
The method of making the impingement polystyrene is:
3, styrene-butadiene latex or the dried glue of butylbenzene are added in the aforesaid polystyrene lysate, mixed, be heated under the normal pressure 180-220 ℃, heating 60-70 minute, solvent evaporates is fallen, carry-over is the impingement polystyrene.This impingement polystyrene can directly enter forcing machine and make silk, and further sends into the tablets press granulation, makes impingement polystyrene pellet.Solvent is recyclable to be used again.
(1) styrene-butadiene latex doubly directly adds for the 0.11-0.22 that adds polystyrene foamed weight in the polystyrene lysate by weight.
(2) the dried glue of the butylbenzene 0.12-0.24 that adds polystyrene foamed weight for institute in the polystyrene lysate by weight doubly is added to earlier in the vinylbenzene mixed solvent of abovementioned steps 1 preparation and dissolves, and is added to after the dissolving in the polystyrene lysate that abovementioned steps 2 prepares again.The vinylbenzene mixed solvent is that 4-6 doubly selects for use for the dried glue weight of butylbenzene by weight.
Above-mentioned said polystyrene foamed mainly is meant the depleted polystyrene foamed, needs to handle through cleaning-drying earlier when adopting the inventive method.Method of the present invention adopts reactor and other general-purpose equipment commonly used to finish.
The present invention has found a simple effective method for the recycling of waste foamed poly styrene, and that equipment drops into is little, technical process is simple, practical.The environmental pollution that can effectively solve waste foamed poly styrene and produced, and can turn waste into wealth.
Embodiment
Be several embodiments of the present invention below:
Embodiment 1: get vinylbenzene 24 grams and 93# white gasoline 476 grams, mix and make vinylbenzene mixed solvent 500 grams, add 1500 gram waste foamed poly styrenes, the dissolving back is at 180 ℃, normal pressure heating down vapored away solvent in 60 minutes, made General Purpose Polystyrenre 1478 grams.
Embodiment 2: get vinylbenzene 50 grams and 93# white gasoline 450 grams, mix and make vinylbenzene mixed solvent 500 grams, add 1250 gram waste foamed poly styrenes, the heating under 180 ℃, normal pressure of dissolving back vapored away solvent in 60 minutes, made General Purpose Polystyrenre 1230 grams.
Embodiment 3: get vinylbenzene mixed solvent 500 grams by embodiment 2, add 1250 gram waste foamed poly styrenes, the dissolving back adds the dried glue lysate of 938 gram butylbenzene, this lysate is to adopt the dried glue of 188 gram butylbenzene to be dissolved in the vinylbenzene mixed solvent that 750 grams produce by embodiment 2 to make, the back heating under 180 ℃, normal pressure that stirs vapored away solvent in 60 minutes, made impingement polystyrene 1406 grams.
Embodiment 4: get vinylbenzene mixed solvent 500 grams by embodiment 1, add 1500 gram waste foamed poly styrenes, the dissolving back adds styrene-butadiene latex 225 grams, stirs, heating vapored away solvent in 60 minutes under 180 ℃, normal pressure, made impingement polystyrene 1606 grams.
Embodiment 5: get vinylbenzene mixed solvent 10kg by embodiment 1, add the 28kg waste foamed poly styrene, dissolving back adds the dried glue lysate of 25kg butylbenzene, and this lysate is to adopt the dried glue of 5kg butylbenzene to be dissolved in 20kg by making in the prepared vinylbenzene mixed solvent of embodiment 1.The back heating under 180 ℃, normal pressure that stirs vapored away solvent in 60 minutes, made impingement polystyrene 32.7kg.
After testing by the prepared General Purpose Polystyrenre of embodiment 1,2: softening temperature is respectively 82 ℃, 80 ℃, and transmittance is respectively 72%, 70%, and flexural strength is respectively 83Mpa, 79Mpa, and specific inductivity is all less than 2.6 * 10
6Hz, fugitive constituent are all less than 1%.Except that transmittance slightly the difference, remainder data all conforms to substantially with the international GB12671-90 of General Purpose Polystyrenre, and has good molding tinting strength.
After testing by the prepared impingement polystyrene of embodiment 3,4,5: outward appearance is respectively brown, oyster white, light brown, and notched Izod impact strength is all greater than 7.2KJ/m
2, heat-drawn wire is respectively 75 ℃, 71 ℃, 72 ℃, and specific inductivity is all less than 2.6 * 10
6Hz, fugitive constituent are all less than 1%.Conform to the qualified product performance index of selling in the market, and have good molding tinting strength.
Claims (3)
1. method of producing General Purpose Polystyrenre by waste and old polystyrene foamed, it is characterized in that: (1) is mixed and made into the vinylbenzene mixed solvent with vinylbenzene and gasoline, and is stand-by; Gasoline adopts the above white gasoline of 93#, and the 10-20 that gasoline is by volume measured to the volume of styrene amount extraordinarily goes into; (2) polystyrene foamed is added in the vinylbenzene mixed solvent successively, dissolved separating made the polystyrene lysate, and polystyrene foamed is extraordinarily gone into for the 0.6-3.2 of weight of solvent by weight; (3) the polystyrene lysate is heated to 180-220 ℃ under normal pressure, heated 60-70 minute, solvent evaporates is fallen, carry-over is General Purpose Polystyrenre.
2. method by waste and old polystyrene foamed production impingement polystyrene, it is characterized in that: (1), (2) are identical with step (1), (2) in the claim 1; (3) doubly directly be added in the polystyrene solution for the 0.11-0.22 that adds polystyrene foamed weight in the aforementioned polystyrene lysate styrene-butadiene latex by weight, mixed, be heated under the normal pressure 180-220 ℃, heating 60-70 minute, solvent evaporates is fallen, and carry-over is the impingement polystyrene.
3. method by waste and old polystyrene foamed production impingement polystyrene, it is characterized in that: (1), (2) are identical with step (1), (2) in the claim 1; (3) with the dried glue of butylbenzene by weight with step (2) in the 0.12-0.24 of dissolved polystyrene foamed weight doubly get the raw materials ready, dissolve in the vinylbenzene mixed solvent of step (1) preparation and dissolve, the vinylbenzene mixed solvent is doubly selected for use for the 4-6 of the dried glue weight of butylbenzene by weight; (4) the dried glue lysate of butylbenzene with step (3) preparation is added in the polystyrene foamed lysate of step (2) preparation, mix, be heated to 180-220 ℃ under the normal pressure, heated 60-70 minute, solvent evaporates is fallen, carry-over is the impingement polystyrene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001025732A CN1133689C (en) | 2000-03-22 | 2000-03-22 | Method of foaming polystyrene to produce polystyrene products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001025732A CN1133689C (en) | 2000-03-22 | 2000-03-22 | Method of foaming polystyrene to produce polystyrene products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1277213A CN1277213A (en) | 2000-12-20 |
| CN1133689C true CN1133689C (en) | 2004-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001025732A Expired - Fee Related CN1133689C (en) | 2000-03-22 | 2000-03-22 | Method of foaming polystyrene to produce polystyrene products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1133689C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006098287A1 (en) * | 2005-03-15 | 2006-09-21 | Techno Polymer Co., Ltd. | Method and apparatus for recovering (rubber-reinforced) styrene resin composition |
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2000
- 2000-03-22 CN CNB001025732A patent/CN1133689C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1277213A (en) | 2000-12-20 |
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