CN102875882A - Polyethylene and carbon dioxide extruded micro-foamed product and preparation method thereof - Google Patents
Polyethylene and carbon dioxide extruded micro-foamed product and preparation method thereof Download PDFInfo
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- CN102875882A CN102875882A CN2012104086943A CN201210408694A CN102875882A CN 102875882 A CN102875882 A CN 102875882A CN 2012104086943 A CN2012104086943 A CN 2012104086943A CN 201210408694 A CN201210408694 A CN 201210408694A CN 102875882 A CN102875882 A CN 102875882A
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- polyethylene
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Abstract
The invention discloses a polyethylene and carbon dioxide extruded micro-foamed product and a preparation method thereof. The polyethylene and carbon dioxide extruded micro-foamed product is mainly made from polyethylene by adding foamer sodium bicarbonate, lubricant and nucleating agent and performing mixing, extrusion foaming, calendering, cooling and forming. Liquid carbon dioxide is replaced by the sodium bicarbonate, the foaming process is simple, production cost is low, no toxic substances occur, the process is safe, the formulation is simple, and the yield is high.
Description
Technical field
The invention belongs to polymeric material field, the plastic working industry is specifically related to a kind of polyethylene carbonic acid gas and extrudes little foaming product and preparation method.
Technical background
The little foaming technique of present polyethylene is chemical foaming mostly, adopts the azo chemical foaming agent, behind the foamable in the goods residual harmful substance can not thoroughly decompose, can not reach the residual index that requires of objectionable impurities in the GB.In addition, also have plenty of and adopt liquid carbon dioxide technology (LCD) to make the polyethylene carbonic acid gas to extrude little foaming product, but these goods and foaming technique are as whipping agent with liquid carbon dioxide, under supercritical state, be injected in the plastics of melting, the method is not only extremely strict to the carbon dioxide injection equipment requirements, and equipment price is expensive, and technical difficulty is large, production cost is high, and the finished product rate of particularly importantly producing is lower.
Summary of the invention
The object of the present invention is to provide the polyethylene carbonic acid gas that a kind of foam process is simple, yield rate is high, production cost is low and performance is good to extrude little foaming product and preparation method.
In order to realize the present invention, polyethylene carbonic acid gas of the present invention is extruded little foaming product take polyethylene as base material, by adding whipping agent sodium bicarbonate, and lubricant, nucleator mixes, and concrete parts by weight of raw materials forms:
Polyethylene is that Sinopec company produces white granular in the above-mentioned starting material; Whipping agent is the food grade sodium bicarbonate, and this sodium bicarbonate thermal degradation is carbonic acid gas and water, without any the Harmful Residue; Nucleator is the food grade talc powder.
Take above-mentioned materials as starting material, the polyethylene carbonic acid gas is extruded little foaming product preparation method, may further comprise the steps:
1) batch mixing: with polyethylene, sodium bicarbonate, lubricant, nucleator component weigh batching by weight, prepare and with mixing machine it is fully mixed afterwards, the material that mixes is for subsequent use, and mixture temperature is controlled at below 40 degree, time 15-20 minute;
2) extrusion foaming: the material that will mix adds No. 1 forcing machine with feeder, make its fully melting under 130 degree temperature, mixing, send into that No. 2 forcing machines fully mix again, shearing, mixing, the carbonic acid gas that obtains after sodium bicarbonate is decomposed fully is dissolved in the molten plastic, after 3-4 minute, expanded foamed extruding through the die head die orifice time;
3) press polish, cooling, moulding: after foaming is extruded, through the three-roller calendar press polish, then through the cooling roller cooling and shaping, again through the tractor traction, cut or be rolled into the coiled material packing finally by crossing cutting machine.
Above-mentioned related production unit is the known equipment of industry.
The present invention, the polyethylene carbonic acid gas is extruded little foaming product and preparation method, adopts sodium bicarbonate to substitute liquid carbon dioxide, and foam process is simple, production cost is low, without decomposing toxic substance, process safety, and prescription is simple, and yield rate is high, and product performance meet industry requirement fully.
Embodiment
The present invention is described further below by example, need to prove that present embodiment only is used for the present invention is further specified, but do not limit to its scope.
Embodiment 1:
The polyethylene carbonic acid gas is extruded little foaming product and preparation method, and component is by weight:
Take by weighing above-mentioned starting material, above-mentioned starting material are spent below the temperature 40, the 15-20 minutes fully mixes it with mixing machine, it is for subsequent use that the material that mixes is put into feed bin, then will expect to add the forcing machine hopper with feeder, make the material fully melting under 130-150 degree temperature in the 1# forcing machine that mixes, molten plastic enters the 2# forcing machine fully to be mixed again, shear, mixing, the carbonic acid gas that obtains after sodium bicarbonate is decomposed fully is dissolved in the molten plastic, carbonic acid gas is separated out, after 3-4 minute, expanded foamed extruding through the die head die orifice time, after foaming is extruded through the three-roller calendar press polish, then through the cooling roller cooling and shaping, again through the tractor traction, cut or be rolled into the coiled material packing finally by crossing cutting machine.
Embodiment 2:
The polyethylene carbonic acid gas is extruded little foaming product and preparation method, and component is by weight:
Take by weighing above-mentioned starting material, above-mentioned starting material are spent below the temperature 40, the 15-20 minutes fully mixes it with mixing machine, it is for subsequent use that the material that mixes is put into feed bin, then will expect to add the forcing machine hopper with feeder, make the material fully melting under 130-150 degree temperature in the 1# forcing machine that mixes, molten plastic enters the 2# forcing machine fully to be mixed again, shear, mixing, the carbonic acid gas that obtains after sodium bicarbonate is decomposed fully is dissolved in the molten plastic, carbonic acid gas is separated out, after 3-4 minute, expanded foamed extruding through the die head die orifice time, after foaming is extruded through the three-roller calendar press polish, then through the cooling roller cooling and shaping, again through the tractor traction, cut or be rolled into the coiled material packing finally by crossing cutting machine.
Claims (1)
1. a polyethylene carbonic acid gas is extruded little foaming product and preparation method, it is characterized in that: the polyethylene carbonic acid gas is extruded little foaming product take polyethylene as base material, by adding the whipping agent sodium bicarbonate, lubricant, nucleator mixes, and concrete parts by weight of raw materials forms:
Take above-mentioned materials as starting material, the polyethylene carbonic acid gas is extruded little foaming product preparation method, may further comprise the steps:
A, batch mixing: with polyethylene, sodium bicarbonate, lubricant, nucleator component weigh batching by weight, prepare and with mixing machine it is fully mixed afterwards, the material that mixes is for subsequent use, and mixture temperature is controlled at below 40 degree, time 15-20 minute;
B, extrusion foaming: the material that will mix adds No. 1 forcing machine with feeder, make its fully melting under 130 degree temperature, mixing, send into that No. 2 forcing machines fully mix again, shearing, mixing, the carbonic acid gas that obtains after sodium bicarbonate is decomposed fully is dissolved in the molten plastic, after 3-4 minute, expanded foamed extruding through the die head die orifice time;
C, press polish, cooling, moulding: after foaming is extruded, through the three-roller calendar press polish, then through the cooling roller cooling and shaping, again through the tractor traction, cut or be rolled into the coiled material packing finally by crossing cutting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104086943A CN102875882A (en) | 2012-10-24 | 2012-10-24 | Polyethylene and carbon dioxide extruded micro-foamed product and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104086943A CN102875882A (en) | 2012-10-24 | 2012-10-24 | Polyethylene and carbon dioxide extruded micro-foamed product and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102875882A true CN102875882A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104086943A Pending CN102875882A (en) | 2012-10-24 | 2012-10-24 | Polyethylene and carbon dioxide extruded micro-foamed product and preparation method thereof |
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| CN (1) | CN102875882A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113651A (en) * | 2013-01-25 | 2013-05-22 | 安徽省长城汽车内饰件有限责任公司 | Method for producing high-foaming EPE pearl wool by use of carbon dioxide foaming agent |
| CN103554658A (en) * | 2013-10-18 | 2014-02-05 | 深圳职业技术学院 | Porous plastic material and preparation method thereof |
| CN108770327A (en) * | 2018-06-22 | 2018-11-06 | 四川大学 | A kind of gradient layer foaming absorbing material and preparation method thereof |
| WO2023019919A1 (en) | 2021-08-17 | 2023-02-23 | 江苏大毛牛新材料有限公司 | Foaming process using carbon dioxide solution |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353460A (en) * | 2008-09-11 | 2009-01-28 | 丹阳市华东工程塑料有限公司 | Environment-friendly type micro-foaming polypropylene sheet and preparation thereof |
| CN102020799A (en) * | 2009-09-22 | 2011-04-20 | 中国石油化工股份有限公司 | Raw material composition special for rotational molding foamed product, and preparation method and application method thereof |
-
2012
- 2012-10-24 CN CN2012104086943A patent/CN102875882A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353460A (en) * | 2008-09-11 | 2009-01-28 | 丹阳市华东工程塑料有限公司 | Environment-friendly type micro-foaming polypropylene sheet and preparation thereof |
| CN102020799A (en) * | 2009-09-22 | 2011-04-20 | 中国石油化工股份有限公司 | Raw material composition special for rotational molding foamed product, and preparation method and application method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杨经涛 等: "《发泡塑料制品与加工》", 31 July 2012, 化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113651A (en) * | 2013-01-25 | 2013-05-22 | 安徽省长城汽车内饰件有限责任公司 | Method for producing high-foaming EPE pearl wool by use of carbon dioxide foaming agent |
| CN103554658A (en) * | 2013-10-18 | 2014-02-05 | 深圳职业技术学院 | Porous plastic material and preparation method thereof |
| CN108770327A (en) * | 2018-06-22 | 2018-11-06 | 四川大学 | A kind of gradient layer foaming absorbing material and preparation method thereof |
| WO2023019919A1 (en) | 2021-08-17 | 2023-02-23 | 江苏大毛牛新材料有限公司 | Foaming process using carbon dioxide solution |
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Application publication date: 20130116 |