CN1032794C - Modelling foam products made from waste polystyrene foam - Google Patents
Modelling foam products made from waste polystyrene foam Download PDFInfo
- Publication number
- CN1032794C CN1032794C CN91104920A CN91104920A CN1032794C CN 1032794 C CN1032794 C CN 1032794C CN 91104920 A CN91104920 A CN 91104920A CN 91104920 A CN91104920 A CN 91104920A CN 1032794 C CN1032794 C CN 1032794C
- Authority
- CN
- China
- Prior art keywords
- polystyrene foam
- water
- waste polystyrene
- foam
- products made
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The present invention relates to a technology for reproducing a polystyrene foam product by waste polystyrene foam. Blocky waste polystyrene is put in water to which softener, surfactant and defoamer are added, and is broken into beads or similar bodies thereof by a rapidly rotating cutter; after the beads or the similar bodies thereof are dehydrated and dried to contract, a foaming agent is added to obtain expandable polystyrene, and then the expandable polystyrene is directly (or after being prefoamed) moulded in a mould so as to become a foam product in a designated shape.
Description
A kind of method of making the polystyrene foam goods specifically, is a method of utilizing modelling foam products made from waste polystyrene foam.
In recent decades, along with the extensive use of polystyrene foam as packing and heat-barrier material, its discarded amount also grows with each passing day.Relative density is little because this waste material has, volume is big, have good ageing resistance, is difficult for degraded voluntarily and destroys; Bury, volume is flexible greatly again; Burning a large amount of dense smokes of emerging cause secondary pollution, and people claim that it is " typical case's representatives of plastics public hazards ".All fail fine solution up to now both at home and abroad, how this waste material of reasonable use has caused the concern of the countries in the world that comprise China.In the prior art, adopt following several method usually for the processing of waste polystyrene foam: (1) is dissolved in and makes various types of coating and bonding agent in the machine solvent.Shortcoming is that poor adhesive force can only be used in coarse surface, and of low quality; (2) styrene monomer is made in cracking, and shortcoming is that conversion ratio is low, and product purity be cannot say for sure to demonstrate,prove; (3) its fragmentation, fusion, deaeration, extrusion molding, pelletizing are made general polystyrene material grain, as injection molding raw material.Shortcoming is that the general polystyrene aberration matter of gained is low; (4) solvent polymerization manufactured expandable polystyrene.Shortcoming is that quality be cannot say for sure to demonstrate,prove, and will consume styrene more in short supply in the market.
The purpose of this invention is to provide a kind of method of simple, economic processing waste polystyrene foam, waste polystyrene foam is turned bane into boon, after simple the processing, regeneration becomes new polystyrene foam goods.
Particular content of the present invention is: the waste polystyrene foam piece is placed on uses the cutter that rotates at a high speed with its fragmentation in the water, weaken for making the bonding force between the foam beads, has added softening agent, surfactant and defoamer in aqueous medium.Wherein: softening agent is meant the alcohols (as methyl alcohol, ethanol, propyl alcohol, ethylene glycol, glycerine etc.) that energy is water-soluble; Water-fast benzene compounds (as benzene,toluene,xylene etc.) and halogenated hydrocarbons (as carrene, dichloroethanes, dichloropropane) or its mixture, its addition is 10～20% of a water consumption; Surfactant is meant various types of anion, cation, nonionic or amphoteric surfactant, and its addition is 0.01～0.5% of a water consumption; Defoamer is meant all kinds silicone defoaming agent and polyether type defoamer, and its addition is 0.01～0.2% of a water consumption; The temperature of water is 10～100 ℃ during fragmentation waste polystyrene foam piece.The bead that waste polystyrene foam obtains after fragmentation or its approximation are handled through 80～160 ℃ air (or water vapour), make its drying, be shrunk to ganoid circular foam beads, just can obtain the regenerated polystyrene foam beads after adding blowing agent again.The blowing agent that adds is meant: benzene,toluene,xylene, carrene, dichloroethanes, dichloropropane, ethyl acetate, butyl acetate, propane, butane, pentane, hexane, heptane, benzinum, fluorine Lyons 11, fluorine Lyons 12, methyl alcohol, ethanol, isopropyl alcohol or its mixture, its addition is for being 2～25% of polystyrene foam.At last, be 100～150 ℃ in temperature, pressure is to keep 0.5～20 minute under the condition of 0.05～0.5 MPa, the regenerated polystyrene foam beads is molded as the foamed product of designated shape in traditional EPS mould.
The invention has the advantages that technology is simple, the additional materials that consumes is few, under the situation that keeps polystyrene foam true qualities (white), can all change into new product to waste material, every physical and mechanical properties of molded product and former goods are approximate, there is not " three wastes " discharging aborning, and small investment, benefit are big, have very big economic benefit, social benefit and environmental benefit.
Embodiment:
The waste polystyrene foam of bulk is put into the aqueous solution that is added with 5% ethanol, 5% glycerine, 0.01% neopelex, 0.01% polyether type defoamer; be heated to 50 ℃; make its fragmentation become polystyrene foam bead or its approximation with atwirl cutter; then through 120-130 ℃ hot air treatment 1 hour, in the activation still, add the mixture blowing agent (its ratio is 6: 4: 1) that bead weighs 20% propane, butane and pentane.Be 0.25 MPa with pressure in traditional EPS aluminum alloy mould, temperature is 120 ℃ water vapour heating 5 minutes, and then explosive decompression, cooling can make the foamed product of designated shape.
Claims (6)
1, a kind of modelling foam products made from waste polystyrene foam method, it is characterized in that the waste polystyrene foam piece is placed in the water, be added with concentration in the water and be water-soluble alcohols of 10～20% of water, the softening agent of water-fast benzene compounds and halogenated hydrocarbons or its mixture; Concentration is that the surfactant of 0.01～0.5% anion, cation, nonionic or amphoteric of water and concentration are 0.01～0.2% all types of silicone defoaming agents and polyether type defoamer of water; be broken into bead or its approximation with atwirl cutter; after shrinking, adding blowing agent, molding becomes foamed product again.
2, according to the described modelling foam products made from waste polystyrene foam method of claim 1, the temperature that it is characterized in that water is 10～100 ℃.
3,, it is characterized in that described contraction is meant that the broken waste polystyrene foam that becomes particle handles with 80～160 ℃ air or water vapour according to the described modelling foam products made from waste polystyrene foam method of claim 1.
4,, it is characterized in that the blowing agent that adds is benzene,toluene,xylene, carrene, dichloroethanes, dichloropropane, ethyl acetate, butyl acetate, propane, butane, pentane, hexane, benzinum, fluorine Lyons 11, fluorine Lyons 12, methyl alcohol, ethanol, isopropyl alcohol or its mixture according to the described method of utilizing Remodeling of Waste Polystyrene Foam to become foamed product of claim 1.
5, according to claim 1 or the 4 described methods of utilizing Remodeling of Waste Polystyrene Foam to become foamed product, the consumption that it is characterized in that adding blowing agent is 2～25% of a waste polystyrene foam.
6, according to the described method of utilizing Remodeling of Waste Polystyrene Foam to become foamed product of claim 1, it is characterized in that its molding methods is directly to adopt traditional EPS mould to carry out molding, its condition is:
Temperature: 100～150 ℃
Pressure: 0.05～0.5 MPa
Time: 0.5～20 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104920A CN1032794C (en) | 1991-07-17 | 1991-07-17 | Modelling foam products made from waste polystyrene foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104920A CN1032794C (en) | 1991-07-17 | 1991-07-17 | Modelling foam products made from waste polystyrene foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1059118A CN1059118A (en) | 1992-03-04 |
| CN1032794C true CN1032794C (en) | 1996-09-18 |
Family
ID=4906881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91104920A Expired - Fee Related CN1032794C (en) | 1991-07-17 | 1991-07-17 | Modelling foam products made from waste polystyrene foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032794C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105856456A (en) * | 2016-04-28 | 2016-08-17 | 安徽省华晨塑业科技有限公司 | Energy-saving regeneration process for waste foamed plastic |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60123231T2 (en) * | 2000-03-15 | 2007-09-27 | Kagoshimaken | METHOD FOR PRODUCING RECYCLED, EXPANDED POLYSTYRENE RESIN PARTICLES |
| CN100404610C (en) * | 2006-08-24 | 2008-07-23 | 姚野 | Producing method for generative foaming deposed foam of polystyrene |
| CN101230152B (en) * | 2007-01-28 | 2010-05-19 | 青岛科技大学 | Method for preparing waste polyphenylacetylene micron-size spherical particles |
| CN108623928A (en) * | 2017-03-21 | 2018-10-09 | 洛阳尖端技术研究院 | A kind of suction wave foam and preparation method thereof |
| CN109177109A (en) * | 2018-08-30 | 2019-01-11 | 东莞市兆盈建材有限公司 | A kind of extrusion molding board production technology |
-
1991
- 1991-07-17 CN CN91104920A patent/CN1032794C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105856456A (en) * | 2016-04-28 | 2016-08-17 | 安徽省华晨塑业科技有限公司 | Energy-saving regeneration process for waste foamed plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059118A (en) | 1992-03-04 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |