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 PDF

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Publication number
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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CN
China
Prior art keywords
polyethylene
carbonic acid
acid gas
sodium bicarbonate
preparation
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.)
Pending
Application number
CN2012104086943A
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Chinese (zh)
Inventor
王洪业
王松刚
王松山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGDAO XINSANHONG PLASTIC PRODUCTS CO Ltd
Original Assignee
QINGDAO XINSANHONG PLASTIC PRODUCTS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by QINGDAO XINSANHONG PLASTIC PRODUCTS CO Ltd filed Critical QINGDAO XINSANHONG PLASTIC PRODUCTS CO Ltd
Priority to CN2012104086943A priority Critical patent/CN102875882A/en
Publication of CN102875882A publication Critical patent/CN102875882A/en
Pending legal-status Critical Current

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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

The polyethylene carbonic acid gas is extruded little foaming product and preparation method
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.
CN2012104086943A 2012-10-24 2012-10-24 Polyethylene and carbon dioxide extruded micro-foamed product and preparation method thereof Pending CN102875882A (en)

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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Cited By (3)

* Cited by examiner, † Cited by third party
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

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 (3)

* Cited by examiner, † Cited by third party
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

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Application publication date: 20130116