CN111303364A - High-heat-insulation polyurethane foaming formula and freezer based on same - Google Patents
High-heat-insulation polyurethane foaming formula and freezer based on same Download PDFInfo
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- CN111303364A CN111303364A CN202010295557.8A CN202010295557A CN111303364A CN 111303364 A CN111303364 A CN 111303364A CN 202010295557 A CN202010295557 A CN 202010295557A CN 111303364 A CN111303364 A CN 111303364A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3218—Polyhydroxy compounds containing cyclic groups having at least one oxygen atom in the ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- 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
- C08J9/08—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 carbon dioxide
-
- 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
- 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
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
- C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/16—Unsaturated hydrocarbons
- C08J2203/162—Halogenated unsaturated hydrocarbons, e.g. H2C=CF2
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/20—Ternary blends of expanding agents
- C08J2203/204—Ternary blends of expanding agents of chemical foaming agent and physical blowing agents
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Refrigerator Housings (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a high-heat-insulation polyurethane foaming formula, and relates to the technical field of freezers. The high-heat-insulation polyurethane foaming formula comprises the following components in parts by weight: 100 parts of white; HFO-1233ZD15-20 parts; 5-10 parts of cyclopentane; 140 portions and 155 portions of black materials; wherein the white material comprises the following components in percentage by weight: 35-40% of sucrose; 30-35% of diethylenetriamine; 10-15% of glycerol; 10-15% of pentaerythritol; 1-2% of water; 2-4% of a catalyst; 2-4% of stabilizing agent. According to the invention, the high heat-insulating property of the polyurethane foaming heat-insulating layer is realized by adjusting the polyurethane foaming formula, and the manufacturing requirement of the ultrathin refrigerator is realized; solves the problems of complicated production process and high production cost of the existing ultrathin freezer.
Description
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a high-heat-insulation polyurethane foaming formula and a refrigerator based on the same.
Background
The refrigerator is an indispensable electrical appliance in life, and along with the continuous development of technology and the continuous competition of products, the ultra-thin refrigerator gradually becomes the development direction. Under the same volume, the occupied area of the ultrathin freezer is smaller; the volume of the ultrathin freezer is larger with the same floor area. And the transportation cost and the storage cost of the ultrathin refrigerator can be reduced. Thus, ultra-thin ice chests are a better choice, both for the consumer and for the manufacturer.
The ultra-thin freezer is manufactured by adopting a vacuum insulation panel (VIP panel for short) technology and utilizing the ultra-high heat insulation effect of the VIP panel, so that the purpose of reducing the thickness of a heat insulation layer (namely a polyurethane heat insulation layer) of the freezer is achieved, and the ultra-thin freezer is manufactured.
However, the VIP plate used in the technical scheme is very high in price, the manufacturing process is increased, and meanwhile, the rejection rate of the VIP plate in the field use process is high, so that the overall production cost of the ultrathin refrigerator is high. Therefore, how to adopt a low-cost technical scheme to meet the requirement of manufacturing an ultrathin refrigerator becomes a common difficulty in the industry.
Disclosure of Invention
The invention aims to provide a high-heat-insulation polyurethane foaming formula and a freezer based on the high-heat-insulation polyurethane foaming formula, wherein the high heat-insulation performance of a polyurethane foaming heat-insulation layer is realized by adjusting the polyurethane foaming formula, and the manufacturing requirement of an ultrathin freezer is realized; solves the problems of complicated production process and high production cost of the existing ultrathin freezer.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a high-heat-insulation polyurethane foaming formula which comprises the following components in parts by weight:
100 parts of white material;
HFO-1233ZD15-20 parts;
5-10 parts of cyclopentane;
140 portions and 155 portions of black materials;
the black material is polymethylene polyphenyl isocyanate, the viscosity of the black material is 850-900(25 ℃) mPa & s, and the content of the isocyanate is 36-38%
Wherein the white material comprises the following components in percentage by weight:
an ice chest, said ice chest comprising a polyurethane insulation; the polyurethane heat-insulating layer is prepared by the high-heat-insulating polyurethane foaming formula.
The invention has the following beneficial effects:
according to the invention, through reconfiguration and adjustment of the polyurethane foaming formula, the heat insulation effect of the polyurethane foaming layer is effectively improved, and the high heat insulation performance of the polyurethane foaming heat insulation layer is realized, so that the wall thicknesses of the refrigerator body and the door body of the refrigerator can be effectively reduced, the manufacturing requirement of the ultrathin refrigerator is realized, and compared with the manufacturing mode of adopting a vacuum heat insulation plate, the production process is effectively simplified, and the production cost is reduced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a high-heat-insulation polyurethane foaming formula which comprises the following components in parts by weight:
100 parts of white material;
15-20 parts of HFO-1233ZD, wherein the HFO-1233ZD is hereinafter abbreviated as LBA;
5-10 parts of cyclopentane;
140 portions and 155 portions of black materials;
the black material is polymethylene polyphenyl isocyanate, the viscosity is 850-900(25 ℃)/mPa.s, and the content of isocyanate is 36-38%.
Wherein the white material comprises the following components in percentage by weight:
a refrigerator comprises a polyurethane heat-insulating layer; the polyurethane heat-insulating layer is prepared by the high-heat-insulating polyurethane foaming formula, and the preparation method comprises the following steps:
the preparation method comprises the following steps:
the method comprises the following steps: mixing a white material, cyclopentane and LBA in a white material premixing tank according to a formula ratio at the material temperature of 18 ℃ to obtain a mixed white material;
step two: under the condition that the material temperature is 18 ℃, putting isocyanate with the viscosity of 850-900(25 ℃) mPa & s and high functionality into a black material premixing tank and uniformly stirring to obtain a black material; wherein, the content of isocyanic acid radical is 36-38%;
step three: injecting the mixed white material and the black material into an inner cavity of a material injection gun head at high speed and high pressure, and injecting the fully mixed foaming raw material into a refrigerator body and a door body mould to be foamed through a gun head nozzle;
step four: after the foaming raw materials are cured in the mould, demoulding is carried out, and then a hard polyurethane heat-insulating layer is formed in the refrigerator body and the door body.
The first embodiment is as follows:
the high-heat-insulation polyurethane foaming formula comprises the following raw materials in parts by weight:
the white material is a mixed substance of polyether polyol, water, a catalyst and a stabilizer in different component proportions, and the white material comprises the following raw materials in percentage by mass:
the formula is prepared into the high-heat-insulation polyurethane heat-insulation layer for the freezer according to the following steps:
the method comprises the following steps: mixing a white material, cyclopentane and LBA in a white material premixing tank according to a formula ratio at the material temperature of 18 ℃ to obtain a mixed white material;
step two: under the condition that the material temperature is 18 ℃, putting isocyanate with the viscosity of 850-900(25 ℃) mPa & s and high functionality into a black material premixing tank and uniformly stirring to obtain a black material; wherein, the content of isocyanic acid radical is 36-38%;
step three: injecting the mixed white material and the black material into an inner cavity of a material injection gun head at high speed and high pressure, and injecting the fully mixed foaming raw material into a refrigerator body and a door body mould to be foamed through a gun head nozzle;
step four: after the foaming raw materials are cured in the mould, demoulding is carried out, and then a hard polyurethane heat-insulating layer is formed in the refrigerator body and the door body.
Comparative example:
the common polyurethane foaming formula comprises the following raw materials in parts by weight:
100 parts of white material;
LBA 2 shares;
13 parts of cyclopentane;
138 parts of black material;
the black material is polymethylene polyphenyl isocyanate with common functionality, the viscosity of the black material is 300-400(25 ℃) mPa.S, the content of isocyanate group is 30-32%, and the black material is provided by Wanhua chemical group GmbH and the mark is PM-200.
The white material comprises the following raw materials in percentage by mass:
a common freezer polyurethane insulation layer is prepared according to the preparation steps of the first embodiment, and the freezer polyurethane insulation layers prepared in the first embodiment and the comparative embodiment are compared and tested, wherein the technical parameters are shown in Table 1, and the performances are compared:
TABLE 1 comparison of Properties
| Parameter(s) | Examples | Comparative example |
| Ratio of black to white | 1.2:1 | 1.2:1 |
| LBA number of copies | 18 | 2 |
| Fraction of cyclopentane | 6 | 13 |
| The temperature of the material was lower | 18 | 18 |
| Mold temperature C | 45 | 45 |
| Fill factor α | 1.7 | 1.7 |
| Coefficient of thermal conductivity mw/mk | 16.7 | 19.8 |
As can be seen from table 1, the thermal conductivity of the polyurethane insulation layer prepared in example one is much lower than that of the comparative example, and is only 16.7mw/mk, so that the polyurethane insulation layer has better insulation performance than the conventional polyurethane insulation layer. Therefore, the high heat insulation performance of the refrigerator can be utilized, the wall thicknesses of the refrigerator body and the door body of the refrigerator can be effectively reduced, the manufacturing requirement of the ultrathin refrigerator is met, and compared with a manufacturing mode adopting a vacuum heat insulation plate, the manufacturing process can be effectively simplified, and the production cost is reduced.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A high-heat-insulation polyurethane foaming formula is characterized by comprising the following components in parts by weight:
wherein the white material comprises the following components in percentage by weight:
2. the foaming formulation as claimed in claim 1, wherein the black material is polymethylene polyphenyl isocyanate with viscosity of 850-.
3. An ice chest, said ice chest comprising a polyurethane insulation; the polyurethane heat-insulating layer is prepared by the high-heat-insulating polyurethane foaming formula in claim 1 or 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010295557.8A CN111303364A (en) | 2020-04-15 | 2020-04-15 | High-heat-insulation polyurethane foaming formula and freezer based on same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010295557.8A CN111303364A (en) | 2020-04-15 | 2020-04-15 | High-heat-insulation polyurethane foaming formula and freezer based on same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112574387A (en) * | 2020-12-14 | 2021-03-30 | 长虹美菱股份有限公司 | Low-cost environment-friendly polyurethane foaming material and foaming process thereof |
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| US20160369077A1 (en) * | 2014-03-05 | 2016-12-22 | Hisense Ronshen (Guangdong) Refrigerator Co., Ltd. | Rigid polyurethane foam and manufacturing method and applications thereof |
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| CN110511422A (en) * | 2019-08-22 | 2019-11-29 | 长虹美菱股份有限公司 | A kind of polyurethane insulation coating and preparation method thereof for refrigerator |
| CN110698714A (en) * | 2019-10-08 | 2020-01-17 | 长虹美菱股份有限公司 | Heat preservation foaming system based on heat preservation refrigerator |
| CN112812354A (en) * | 2020-12-30 | 2021-05-18 | 长虹美菱股份有限公司 | Polyurethane foaming agent |
-
2020
- 2020-04-15 CN CN202010295557.8A patent/CN111303364A/en active Pending
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|---|---|---|---|---|
| CN101357979A (en) * | 2008-08-20 | 2009-02-04 | 江苏科技大学 | Low temperature resistant LNG thermal insulation material and preparation method thereof |
| US20160369077A1 (en) * | 2014-03-05 | 2016-12-22 | Hisense Ronshen (Guangdong) Refrigerator Co., Ltd. | Rigid polyurethane foam and manufacturing method and applications thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112574387A (en) * | 2020-12-14 | 2021-03-30 | 长虹美菱股份有限公司 | Low-cost environment-friendly polyurethane foaming material and foaming process thereof |
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