CN107652500A - A kind of antistatic foaming material and preparation method thereof - Google Patents
A kind of antistatic foaming material and preparation method thereof Download PDFInfo
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- CN107652500A CN107652500A CN201710825913.0A CN201710825913A CN107652500A CN 107652500 A CN107652500 A CN 107652500A CN 201710825913 A CN201710825913 A CN 201710825913A CN 107652500 A CN107652500 A CN 107652500A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0033—Use of organic additives containing sulfur
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/026—Crosslinking before of after foaming
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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Abstract
The invention discloses a kind of antistatic foaming material and preparation method thereof, described antistatic foaming material includes 75~90% low density polyethylene (LDPE)s, 2~15% foaming agents, 0.1~0.5% antistatic additive, 0.1~1% lubricant, 2~5% toughener, 0.1~2% antioxidant and 2~5% colouring agents by weight percentage.Material is made by substep mixing, single screw extrusion machine is extruded, high energy electron irradiation crosslinking and high temperature foaming are prepared, component be sufficiently mixed uniformly, cross-linking effect is good, abscess is fine and smooth, the finished sheet of acquisition has good impact resistance, elongation at break and resistance to ag(e)ing, and sheet material is permanence antistatic material, without being coated with antistatic additive, compared in general polyethylene foam-material, the dosage of antistatic additive can save more than 50%, cost is low, and technique is simple, easy to process.
Description
Technical field
The present invention relates to field of high polymer material processing, and in particular to a kind of antistatic foaming material and preparation method thereof.
Background technology
Polyethylene（PE）With excellent physics, chemistry and mechanical property, its toughness, flexibility and shock-absorbing capacity are good, tool
There is the characteristic such as electric insulation, heat-insulated, be widely used in the fields such as packaging, chemical industry and building.Produced using polyethylene and foaming agent
Polyethylene foam-material is one of earliest industrial applications and the wider expanded material of application, is widely used in electronics, household electrical appliances, vapour
The industries such as car, Leisure Sport.Polyethylene foam-material is using polyethylene as base-material, is subject to the auxiliary materials such as foaming agent, auxiliary agent, passes through hair
Bubble technique, make occur a large amount of trickle foams in base-material, volume increase, density reduces, and possesses buffering, sound-absorbing, shock-absorbing, heat insulation effect
Functional material.
Polyethylene foam-material makes material easily adsorb dust, shadow because the high resistivity on surface easily produces accumulation of static electricity
Ring surface cleanliness and aesthetic property, it is also possible to influence its performance, therefore antistatic process is carried out to it and is particularly important.
The industrial method for taking addition antistatic additive overcomes the defect, but antistatic additive and polyethylene compatible are poor, in polyethylene
It is difficult to be uniformly dispersed, therefore the antistatic effect obtained is all temporary, often carries out secondary operation, in material surface again
Antistatic additive is coated, this mode takes consumptive material, makes process complications, and antistatic property does not significantly improve.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of antistatic foaming material and preparation method thereof, described is anti-
Electrostatic expanded material is electron radiation crosslinked polyethylene expanded material, has excellent draftability, ageing resistace, impact resistance
And it is permanence antistatic sheet material, antistatic effect is good, applied widely.
To reach above-mentioned purpose, the concrete technical scheme that the present invention uses is as follows：
A kind of antistatic foaming material, raw material include in parts by mass：
Low density polyethylene (LDPE) 75~90
Foaming agent 2~15
Antistatic additive 0.1~0.5
Lubricant 0.1~1
Toughener 2~5
Antioxidant 0. 1~2
Colouring agent 2~5
The foaming agent is azodicarbonamide, and the antistatic additive is glycerin monostearate, and the lubricant is stearic acid
Zinc.
Preferably, the mass parts of the low density polyethylene (LDPE) are 78~85, the mass parts of the azodicarbonamide for 7~
12。
Preferably, the toughener is calcium carbonate, and the antioxidant is one or both of DSTDP, antioxidant 1010.
Preferably, the colouring agent is Masterbatch 1398.
A kind of preparation method of antistatic foaming material, comprises the following steps：
（1）Raw material is weighed according to the percentage by weight is formulated；
（2）Material is made in substep mixing：Material is made in foaming agent and low density polyethylene (LDPE) mixing；Lubricant, toughener, antioxidant, colouring agent
Material is made with low density polyethylene (LDPE) mixing；Material is made in antistatic additive and low density polyethylene (LDPE) mixing；
（3）By step（2）The material of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is wound；
（4）Sheet material passes through high energy electron irradiation crosslinking Treatment；
（5）By step（4）Sheet material carry out high temperature foaming, obtain finished sheet.
Preferably, step（2）Substep mixing makes the temperature control of material at 105~150 DEG C.
Preferably, step（3）The process conditions of the single screw extrusion machine are：One 150~160 DEG C of area's temperature, two area's temperature
140~150 DEG C of degree, three 120~130 DEG C of area's temperature, four 110~120 DEG C of area's temperature, five 100~110 DEG C of area's temperature, six area's temperature
100~110 DEG C of degree, seven 95~100 DEG C of area's temperature, 110~120 DEG C of die head temperature, material extruder time of delivery for 2~
5min。
Preferably, step（5）The high temperature blowing temperature is 130~170 DEG C.
The invention has the advantages that：
1st, for the present invention using low density polyethylene (LDPE) as base material, low density polyethylene (LDPE) has acid and alkali-resistance, organic solvent-resistant, water imbibition
Small, the features such as electrical insulating property is excellent, it is adapted to the various moulding process of thermoplastic molding's processing, molding processibility is good.But low-density
Polyethylene is due to being Crystalline plastics, and when temperature exceedes its fusing point, viscosity drastically declines, and this characteristic is to foaming pole
To be unfavorable, the empty phenomenon of bubble is also easy to produce, foaming effect difference directly affects material property, present invention improvement from technique and material two in terms of
Foaming effect：High energy electron irradiation crosslinking is carried out to polyethylene polymer, the polymer viscoelastic increase after crosslinking, makes to foam
The bubble of journey is more easy to keep, and the temperature range for making suitably to foam is widened, and is easy to production operation control；Made using azodicarbonamide
Nonpoisonous and tasteless for foaming agent, heat discharges a large amount of nitrogen, and gas forming amount is high, but its decomposition temperature is high, and the profit that the present invention uses
Lubrication prescription zinc stearate plays lubrication, moreover it is possible to plays activation to foaming agent azodicarbonamide, reduces its decomposition temperature
Gas forming amount is not influenceed simultaneously, steadily can form abscess by fast decoupled.Therefore the foaming effect of the present invention is good, foam structure
It is stable, fine and smooth uniform.
2nd, the present invention takes substep mixing to make the mode of material, dilutes foaming agent, auxiliary agent respectively with low density polyethylene (LDPE) and resists
It is thoroughly mixed again after electrostatic agent, at 105~150 DEG C, low density polyethylene (LDPE) is in molten state so that each component can be wherein
It is dispersed.For the present invention using glycerin monostearate as antistatic additive, glycerin monostearate is good with polyethylene compatible,
With good heat endurance, while there is lubricant, make material with reference to substep mixing, ensure that it is good in the material
Dispersiveness, with reference to follow-up extrusion, electron radiation crosslinking and foam process, the finished sheet time foaming of acquisition is made forever
Long property anti-static material, without being coated with antistatic additive, and compared in general polyethylene foam-material, the dosage of antistatic additive
More than 50% can be saved, cost is low, and technique is simple, easy to process.In addition, the piece of different colours is obtained by adding Masterbatch
Material, colour stable, good dispersion meet diversified demand, and the addition of toughener, antioxidant, lubricant obtains sheet material
Good impact resistance, elongation at break and resistance to ag(e)ing.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of antistatic foaming material, raw materials by weight meter include：It is low density polyethylene (LDPE) 75%, foaming agent 15%, anti-quiet
Electric agent 0.1%, lubricant 0.3%, toughener 4%, antioxidant 0.6% and colouring agent 5%.The foaming agent is azodicarbonamide, is resisted
Electrostatic agent is glycerin monostearate, and lubricant is zinc stearate, and toughener is calcium carbonate, antioxidant DSTDP, and colouring agent is
Masterbatch 1398.
A kind of preparation method of antistatic foaming material, comprises the following steps：（1）Original is weighed according to above-mentioned percentage by weight
Material；
（2）Material is made in substep mixing：Foaming agent and 30% polyethylene mixer are well mixed；Lubricant, toughener, antioxidant, coloring
Agent and 20% polyethylene mixer are well mixed；Antistatic additive and 25% polyethylene mixer are well mixed, and mixing temperature control exists
105℃；（3）By step（2）The material agitator of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is received
Volume, raw material is 2min in the time of delivery of single screw extrusion machine, and the heating-up temperature in each area of single screw extrusion machine is followed successively by：One area
150 DEG C, two 140 DEG C of areas, three 120 DEG C of areas, four 110 DEG C of areas, five 100 DEG C of areas, six 100 DEG C of areas, seven 95 DEG C of areas；Die head temperature 110
℃；（4）Sheet material passes through high energy electron irradiation crosslinking Treatment；（5）By step（4）Sheet material carry out high temperature foaming, blowing temperature 130
DEG C, obtain finished sheet.
Embodiment 2
A kind of antistatic foaming material, raw materials by weight meter include：It is low density polyethylene (LDPE) 78%, foaming agent 11%, anti-quiet
Electric agent 0.2%, lubricant 0.5%, toughener 5%, antioxidant 1.5% and colouring agent 3.8%.The foaming agent is azodicarbonamide,
Antistatic additive is glycerin monostearate, and lubricant is zinc stearate, and toughener is calcium carbonate, and antioxidant is antioxidant 1010,
Colouring agent is Masterbatch 1398.
A kind of preparation method of antistatic foaming material, comprises the following steps：（1）Original is weighed according to above-mentioned percentage by weight
Material；
（2）Material is made in substep mixing：Foaming agent and 25% polyethylene mixer are well mixed；；Lubricant, toughener, antioxidant,
Toner and 25% polyethylene mixer are well mixed；Antistatic additive and 28% polyethylene mixer are well mixed, mixing temperature control
At 110 DEG C；（3）By step（2）The material of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is wound, former
Material is 3min in the time of delivery of single screw extrusion machine, and the heating-up temperature in each area of single screw extrusion machine is followed successively by：One 150 DEG C of area,
Two 145 DEG C of areas, three 125 DEG C of areas, four 110 DEG C of areas, five 100 DEG C of areas, six 105 DEG C of areas, seven 95 DEG C of areas；115 DEG C of die head temperature；（4）
Sheet material passes through high energy electron irradiation crosslinking Treatment；（5）By step（4）Sheet material carry out high temperature foaming, 150 DEG C of blowing temperature, obtain
To finished sheet.
Embodiment 3
A kind of antistatic foaming material, raw materials by weight meter include：It is low density polyethylene (LDPE) 80%, foaming agent 12%, anti-quiet
Electric agent 0.3%, lubricant 1%, toughener 3%, antioxidant 1.2% and colouring agent 2.5%.The foaming agent is azodicarbonamide, is resisted
Electrostatic agent is glycerin monostearate, and lubricant is zinc stearate, and toughener is calcium carbonate, antioxidant DSTDP, and colouring agent is
Masterbatch 1398.
A kind of preparation method of antistatic foaming material, comprises the following steps：（1）Original is weighed according to above-mentioned percentage by weight
Material；
（2）Material is made in substep mixing：Foaming agent and 30% polyethylene mixer are well mixed；Lubricant, toughener, antioxidant, coloring
Agent and 28% polyethylene mixer are well mixed；Antistatic additive and 22% polyethylene mixer are well mixed, and mixing temperature control exists
120℃；（3）By step（2）The material of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is wound, raw material
It is 4min in the time of delivery of single screw extrusion machine, the heating-up temperature in each area of single screw extrusion machine is followed successively by：One 155 DEG C of area, two
145 DEG C of area, three 125 DEG C of areas, four 112 DEG C of areas, five 105 DEG C of areas, six 105 DEG C of areas, seven 98 DEG C of areas；115 DEG C of die head temperature；（4）Piece
Material passes through high energy electron irradiation crosslinking Treatment；（5）By step（4）Sheet material carry out high temperature foaming, 160 DEG C of blowing temperature, obtain
Finished sheet.
Embodiment 4
A kind of antistatic foaming material, raw materials by weight meter include：It is low density polyethylene (LDPE) 85%, foaming agent 8%, antistatic
Agent 0.4%, lubricant 0.8%, toughener 2.6%, antioxidant 1.2% and colouring agent 2%.The foaming agent is azodicarbonamide, is resisted
Electrostatic agent is glycerin monostearate, and lubricant is zinc stearate, and toughener is calcium carbonate, and antioxidant is antioxidant 1010,
Toner is Masterbatch 1398.
A kind of preparation method of antistatic foaming material, comprises the following steps：（1）Original is weighed according to above-mentioned percentage by weight
Material；
（2）Material is made in substep mixing：Foaming agent and 25% polyethylene mixer are well mixed；Lubricant, toughener, antioxidant, coloring
Agent and 30% polyethylene mixer are well mixed；Antistatic additive and 30% polyethylene mixer are well mixed, and mixing temperature control exists
140℃；；（3）By step（2）The material of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is wound, raw material
It is 4min in the time of delivery of single screw extrusion machine, the heating-up temperature in each area of single screw extrusion machine is followed successively by：One 158 DEG C of area, two
150 DEG C of area, three 130 DEG C of areas, four 115 DEG C of areas, five 108 DEG C of areas, six 110 DEG C of areas, seven 98 DEG C of areas；118 DEG C of die head temperature；（4）Piece
Material passes through high energy electron irradiation crosslinking Treatment；（5）By step（4）Sheet material carry out high temperature foaming, 160 DEG C of blowing temperature, obtain
Finished sheet.
Embodiment 5
A kind of antistatic foaming material, raw materials by weight meter include：It is low density polyethylene (LDPE) 90%, foaming agent 4%, antistatic
Agent 0.5%, lubricant 1%, toughener 2%, antioxidant 0.5% and colouring agent 2%.The foaming agent is azodicarbonamide, antistatic
Agent is glycerin monostearate, and lubricant is zinc stearate, and toughener is calcium carbonate, and antioxidant is DSTDP and antioxidant 1010
Deng mass mixing, colouring agent is Masterbatch 1398.
A kind of preparation method of antistatic foaming material, comprises the following steps：（1）Original is weighed according to above-mentioned percentage by weight
Material；
（2）Material is made in substep mixing：Foaming agent and 25% polyethylene mixer are well mixed；Lubricant, toughener, antioxidant, coloring
Agent and 35% polyethylene mixer are well mixed；Antistatic additive and 30% polyethylene mixer are well mixed, and mixing temperature control exists
150℃；（3）By step（2）The material of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is wound, raw material
It is 4min in the time of delivery of single screw extrusion machine, the heating-up temperature in each area of single screw extrusion machine is followed successively by：One 160 DEG C of area, two
150 DEG C of area, three 130 DEG C of areas, four 120 DEG C of areas, five 110 DEG C of areas, six 110 DEG C of areas, seven 100 DEG C of areas；120 DEG C of die head temperature；（4）Piece
Material passes through high energy electron irradiation crosslinking Treatment；（5）By step（4）Sheet material carry out high temperature foaming, 170 DEG C of blowing temperature, obtain
Finished sheet.
Comparative example 1
Except step in preparation technology（2）Other same as Example 3, batch mixing sides of comparative example 1 beyond material are made in substep mixing
Method is well mixed for all raw material components are disposably poured into mixer, stir the temperature that need to be controlled, time also with the phase of embodiment 3
Together.
Comparative example 2
Ordinary electronic radiant crosslinked polyethylene expanded material
Embodiment 1~5 and comparative example 1~2 are subjected to surface resistivity test, test result such as table 1 according to GB/T1410-2006
It is shown.
The antistatic effect of table 1
As seen from the above table, the antistatic foaming material that preparation technology of the present invention obtains has good lasting antistatic behaviour,
And the substep mixing in preparation technology, which is made, expects that step is particularly significant, directly affects the antistatic effect and persistence of material.
Embodiment described above is only explanation of the invention, is not limitation of the present invention, people in the art
The equivalent transformation and modification that member makes according to the present invention, belong to protection scope of the present invention.
Claims (8)
- A kind of 1. antistatic foaming material, it is characterised in that：Raw material includes in parts by mass：Low density polyethylene (LDPE) 75~90Foaming agent 2~15Antistatic additive 0.1~0.5Lubricant 0.1~1Toughener 2~5Antioxidant 0. 1~2Colouring agent 2~5The foaming agent is azodicarbonamide, and the antistatic additive is glycerin monostearate, and the lubricant is stearic acid Zinc.
- 2. antistatic foaming material according to claim 1, it is characterised in that：The mass parts of the low density polyethylene (LDPE) are 78~85, the parts by weight of the azodicarbonamide are 7~12.
- 3. antistatic foaming material according to claim 1, it is characterised in that：The toughener is calcium carbonate, described anti- Oxygen agent is one or both of DSTDP, antioxidant 1010.
- 4. antistatic foaming material according to claim 1, it is characterised in that：The colouring agent is Masterbatch 1398.
- 5. a kind of preparation method of antistatic foaming material, it is characterised in that comprise the following steps：（1）Raw material is weighed according to the percentage by weight is formulated；（2）Material is made in substep mixing：Material is made in foaming agent and low density polyethylene (LDPE) mixing；Lubricant, toughener, antioxidant, colouring agent Material is made with low density polyethylene (LDPE) mixing；Material is made in antistatic additive and low density polyethylene (LDPE) mixing；（3）By step（2）The material of substep mixing is well mixed, and is extruded into sheet material through single screw extrusion machine and is wound；（4）Sheet material passes through high energy electron irradiation crosslinking Treatment；（5）By step（4）Sheet material carry out high temperature foaming, obtain finished sheet.
- 6. the preparation method of antistatic foaming material according to claim 5, it is characterised in that：Step（2）Material is made in mixing Mixed for mixer, temperature control is at 105~150 DEG C.
- 7. the preparation method of antistatic foaming material according to claim 5, it is characterised in that：Step（3）Single spiral shell The process conditions of bar extruder are：One 150~160 DEG C of area's temperature, two 140~150 DEG C of area's temperature, three area's temperature 120~130 DEG C, four 110~120 DEG C of area's temperature, five 100~110 DEG C of area's temperature, six 100~110 DEG C of area's temperature, seven area's temperature 95~100 DEG C, 110~120 DEG C of die head temperature, material is 2~5min in the time of delivery of extruder.
- 8. the preparation method of antistatic foaming material according to claim 5, it is characterised in that：Step（5）The high temperature Blowing temperature is 130~170 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437522A (en) * | 2019-07-19 | 2019-11-12 | 浙江润阳新材料科技股份有限公司 | A kind of preparation method of fire-retardant foam tape base material |
| CN111518328A (en) * | 2020-04-24 | 2020-08-11 | 浙江润阳新材料科技股份有限公司 | One-step formed antistatic IXPE and preparation method thereof |
| CN115107212A (en) * | 2022-07-12 | 2022-09-27 | 长虹美菱股份有限公司 | Polyurethane step-by-step premixing system for refrigerator cabinet, control method and working procedures |
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| CN110437522A (en) * | 2019-07-19 | 2019-11-12 | 浙江润阳新材料科技股份有限公司 | A kind of preparation method of fire-retardant foam tape base material |
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| CN115107212A (en) * | 2022-07-12 | 2022-09-27 | 长虹美菱股份有限公司 | Polyurethane step-by-step premixing system for refrigerator cabinet, control method and working procedures |
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