EP3853296A1 - Mousse de polyuréthane et son procédé de production et dispositif de refroidissement - Google Patents

Mousse de polyuréthane et son procédé de production et dispositif de refroidissement

Info

Publication number
EP3853296A1
EP3853296A1 EP19749692.0A EP19749692A EP3853296A1 EP 3853296 A1 EP3853296 A1 EP 3853296A1 EP 19749692 A EP19749692 A EP 19749692A EP 3853296 A1 EP3853296 A1 EP 3853296A1
Authority
EP
European Patent Office
Prior art keywords
polyurethane foam
catalyst
unit
mixture
polyol
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.)
Withdrawn
Application number
EP19749692.0A
Other languages
German (de)
English (en)
Inventor
Tugce ONER
Orcun YUCEL
Yusuf YUSUFOGLU
Cahit Can CANAKCI
Sefa Yasin UZEN
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3853296A1 publication Critical patent/EP3853296A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/12—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 physical blowing agent
    • C08J9/14—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 physical blowing agent organic
    • C08J9/141—Hydrocarbons
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/022—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments premixing or pre-blending a part of the components of a foamable composition, e.g. premixing the polyol with the blowing agent, surfactant and catalyst and only adding the isocyanate at the time of foaming
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • 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
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2401/02—Cellulose; Modified cellulose
    • 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
    • C08J2497/00—Characterised by the use of lignin-containing materials
    • C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • 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
    • C08J9/0028—Use of organic additives containing nitrogen

Definitions

  • the present invention relates to a polyurethane foam, to the production method of the polyurethane foam and a cooling device comprising the polyurethane foam.
  • Polyurethane foams have very good adiabatic properties. Thanks to their high thermal insulation properties, they are commonly used in building insulation in the construction sector and in cooling systems such as refrigerators, deep freezers, etc.
  • the polyurethane foams are divided into the groups, which are hard and soft, and during the production stage, the main reaction occurs via the polyol mixed with isocyanate and blowing agent earlier on. Additionally, catalysts, nucleating agents, surfactants and other chemicals can be used as additives. Improving especially the thermal properties of the polyurethane foam is related to the total thermal conductivity coefficient. The insulation value of said material is increased by using components therein with low thermal conductivity coefficients.
  • Said gas thermal conductivity vale ( ⁇ gas ) is directly related to the blowing agent added in to the polyurethane foam.
  • the most common blowing agent today is cyclopentane. The most important reason of this is the minimum effect of the agent on ozone depletion and global warming.
  • the thermal conductivity coefficient of the cyclopentane which is 12 mW/mK cannot meet the requirements of the systems with high energy efficiency which are increasingly used with each passing day. Therefore, in the polyurethane foams, the compounds are required to be improved with compounds in addition to the blowing agent, which in turn requires innovations.
  • the most common nucleating agents are used to increase the closed cell ratio in the polyurethane foam and to improve the thermal properties of the polyurethane foam so as to provide said developments.
  • the thermal properties of the foam are improved.
  • the nucleating agents currently used cannot provide sufficiently effective solutions.
  • a refrigerator characterized by the polyurethane foam having a hydroxyl group comprising nanosized and microsized linen fiber, cellulose fiber, etc.
  • the aim of the present invention is the realization of a polyurethane foam with improved material properties (thermal, mechanic, etc.), of the production method of said polyurethane foam, and of a cooling device comprising the polyurethane foam.
  • the polyurethane foam realized to attain the aim of the present invention comprises at least one surfactant and at least one catalyst and at least one polyol which is mixed with water and at least one cyclopentane or mixture of isobutane/cyclopentane and at least one isocyanate as blowing agent and microcrystalline cellulose as the nucleating agent.
  • mechanical properties such as thermal insulation performance and
  • Base polyol defines only the polyol.
  • Polyol mixture defines a mixture comprising at least one polyol mixed with at least one surfactant and at least one catalyst and water.
  • a component defines the polyol mixture and cyclopentane or polyol mixture and isobutane/cyclopentane mixture.
  • B component defines the isocyanate compounds completing the reaction.
  • microcrystalline cellulose in the polyurethane foam disperses in the polyurethane in an easy and homogeneous manner, and thus a material with equal properties at every region is obtained.
  • the polyurethane foam of the present invention comprises the surfactant which is 2% to 5% of the polyol mixture by weight.
  • the surfactant in the polyurethane foam is about 2 to 3 times the catalyst by weight.
  • the polyol mixture in the first step of the production of the polyurethane foam comprises at least one of the blowing catalyst and/or gel catalyst and/or trimer catalyst or the mixture thereof.
  • the polyol mixture comprises at least one catalyst which is mixed by 0.5 to 5% by weight.
  • the polyurethane foam is formed in a quick and efficient manner.
  • methylene diisocyanate as isocyanate component (B component).
  • B component methylene diisocyanate
  • the polyurethane foam comprises water which is 2% of the polyol mixture by weight.
  • the components in the polyol mixture are enabled to easily disperse in each other.
  • the polyurethane foam of the present invention is used in cooling devices as insulation material.
  • the polyurethane foams are materials which are obtained by mixing the polyol, already mixed with cyclopentane, with isocyanate, and which are used as insulation material.
  • the polyurethane foam of the present invention comprises
  • composition of the polyurethane foam of the present invention cell formation in the polyurethane foam increases, and thus thermal conductivity is enabled to significantly decrease. Consequently, as the thermal conductivity coefficient decreases, a more efficient insulation is provided.
  • the base polyol is the main component required for the polyurethane foam reaction.
  • polyether polyol or polyester polyol is used as base polyol. The use of said components provides ease of production and cost advantage.
  • the surfactant in the polyol mixture in the polyurethane foam of the present invention is a siloxane-based surfactant which decreases the surface energy of the mixture, for the base polyol which has a molecular weight of 400-800 g/mol.
  • a siloxane-based surfactant which decreases the surface energy of the mixture, for the base polyol which has a molecular weight of 400-800 g/mol.
  • the ratio of the surfactant is between 2% to 5%.
  • the fluidity and thermal conductivity coefficient values of the resulting material are enabled to be optimum.
  • the catalysts in the polyol mixture in the polyurethane foam of the present invention are selected from at least one of the blowing catalyst and/or gel catalyst and/or trimer catalyst or the mixture thereof. By means of said catalysts, the reactions are performed in the desired time and conditions.
  • metal-based catalysts are ignored, and amine-based catalysts are used as reaction catalyst.
  • Said catalysts are selected from at least one of the bis(2-dimethylaminoethyl) (methyl) amine (C 9 H 23 N 3 based) and/or cyclohexyldimethylamine (C 8 H 17 N based) and/or N,N,N’,N’,N’’,N’’-Hexamethyl-1,3,5-triazine-1,3,5 (2H,4H,6H)-tripropanamine (C 18 H 42 N 6 ) or the mixture thereof.
  • the catalysts in the polyurethane foam of the present invention are 0.5% to 5% of the total polyol mixture by weight.
  • the range given for said ratio enables the reaction to be performed with the desired efficiency and under desired conditions.
  • the polyurethane foam of the present invention comprises Tegostab® as surfactant, Polycat® 5 as blowing catalyst, Polycat® 41 as gel catalyst and Polycat® 8 as trimer catalyst.
  • Tegostab® as surfactant
  • Polycat® 5 as blowing catalyst
  • Polycat® 41 as gel catalyst
  • Polycat® 8 as trimer catalyst.
  • the general advantage of the specific surfactant and catalysts used is to provide fluidity in the reaction, to accelerate the reaction in the desired time, and to enable the components to be mixed well.
  • the surfactant is 2-3 times the total catalyst weight.
  • the materials in the components of the polyurethane foam are enabled to be mixed well, providing a desired fluidity value.
  • the water in the polyol mixture in the polyurethane foam of the present invention is used as mixing agent/solvent.
  • the polyurethane foam of the present invention comprises high-purity cyclopentane or isobutane/cyclopentane mixture as blowing gas.
  • a closed cell ratio of 95% or above is obtained, and the insulation properties of the material are brought up to desired levels.
  • the B component is the component which provides the completion of the reaction for the A component (cyclopentane or isobutane/cyclopentane mixed with polyol mixture) with added microcrystal and which provides the curing of the polyurethane foam.
  • the B component is the conventional methylene diphenyl isocyanate.
  • the polyurethane foam comprises 1.3-1.5 unit conventional methylene diphenyl diisocyanate in a 1 unit polyol mixture.
  • the mechanical properties of the polyurethane foam material are optimized.
  • the polyurethane foam of the present invention comprises microcrystalline cellulose as nucleating agent.
  • the curing process of the polyurethane is accelerated and the polyurethane foam form is obtained more quickly.
  • the homogeneous dispersion of the microcrystalline cellulose in the polyurethane becomes homogeneous.
  • a material with the same properties at every region is obtained.
  • microcrystalline cellulose increases cell formation in the polyurethane foam of the present invention.
  • thermal conductivity decreases and the polyurethane foam gains better insulation properties.
  • the effect value (length/width ratio) of the microcrystalline cellulose is 3:2 and the diameter thereof is between 0.6 to 1.5 microns. Said values provide the polyurethane foam with better thermal insulation properties, and contribute to the homogeneous mixing of the components.
  • the polyol mixture comprises, for 100 unit bas polyol, 2-2.5 unit surfactant, 0.4-1 unit blowing catalyst, 2-3 unit gel catalyst, 0.6-0.8 unit trimer catalyst and 1-2 unit pure water.
  • the resulting polyol mixture is defined as 1 unit polyol mixture.
  • the A component in order to form the A component, 14-17 unit cyclopentane is added to the 1 unit polyol mixture.
  • 0.2 to 3 unit microcrystalline cellulose is added to the A component.
  • the microcrystalline cellulose added as nucleating agent cell formation in the polyurethane foam is increased while the thermal conductivity is decreased.
  • 1.3-1.5 unit isocyanate is added to 1 unit polyol mixture, thus forming the polyurethane foam.
  • the production method of the polyurethane foam of the present invention comprises the steps of
  • a polyurethane foam with improved thermal insulation and homogeneous pore dispersion is obtained.
  • a polyurethane foam with a compressive strength of 130 kPa-140 kPa can be obtained.
  • ultrasonification and/or gravitational and/or mechanical stirrers are used to efficiently mix the microcrystalline cellulose with the A component.
  • the thermal conductivity coefficient is improved by 0.7 mW/mK, while gravitational and mechanical mixings provide an improvement by 0.5-0.6 mW/mK.
  • the thermal conductivity values of the polyurethane foam are improved by 0.5-0.7 mW/mK.
  • the polyurethane foam of the present invention is used in cooling devices such as refrigerator, etc.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

La présente invention concerne une mousse de polyuréthane présentant des propriétés thermiques et mécaniques améliorées, qui comprend au moins un polyol (mélange de polyols) mélangé avec au moins un tensioactif et au moins un catalyseur et de l'eau, au moins un cyclopentane ou isobutane/cyclopentane comme gaz soufflant et au moins un isocyanate. L'invention concerne également son procédé de production et un dispositif de refroidissement.
EP19749692.0A 2018-09-20 2019-07-31 Mousse de polyuréthane et son procédé de production et dispositif de refroidissement Withdrawn EP3853296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201813600 2018-09-20
PCT/EP2019/070685 WO2020057840A1 (fr) 2018-09-20 2019-07-31 Mousse de polyuréthane et son procédé de production et dispositif de refroidissement

Publications (1)

Publication Number Publication Date
EP3853296A1 true EP3853296A1 (fr) 2021-07-28

Family

ID=67544231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19749692.0A Withdrawn EP3853296A1 (fr) 2018-09-20 2019-07-31 Mousse de polyuréthane et son procédé de production et dispositif de refroidissement

Country Status (2)

Country Link
EP (1) EP3853296A1 (fr)
WO (1) WO2020057840A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240114905A1 (en) 2021-01-28 2024-04-11 3M Innovative Properties Company Antimicrobial compositions and articles and related methods

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH471846A (fr) * 1967-04-19 1969-04-30 Elekal Procédé de fabrication d'une mousse de polyuréthane souple et hydrophile
JP2000128951A (ja) * 1998-10-26 2000-05-09 Sumitomo Bayer Urethane Kk 硬質ポリウレタンフォームの製造方法
CA2913359C (fr) 2013-05-29 2020-05-26 Celluforce Inc. Composites a base de polyurethane comprenant de la cellulose nanocristalline et procede permettant d'ameliorer les proprietes des polyurethanes
KR102465857B1 (ko) 2015-12-14 2022-11-11 삼성전자주식회사 폴리우레탄 폼, 이를 포함하는 냉장고 및 폴리우레탄 폼의 제조 방법

Also Published As

Publication number Publication date
WO2020057840A1 (fr) 2020-03-26

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