CN113817213A - Preparation method of polyurethane rigid foam - Google Patents
Preparation method of polyurethane rigid foam Download PDFInfo
- Publication number
- CN113817213A CN113817213A CN202111059148.9A CN202111059148A CN113817213A CN 113817213 A CN113817213 A CN 113817213A CN 202111059148 A CN202111059148 A CN 202111059148A CN 113817213 A CN113817213 A CN 113817213A
- Authority
- CN
- China
- Prior art keywords
- parts
- polyurethane foam
- polyether
- polyether polyol
- rigid polyurethane
- 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
Links
- 239000004814 polyurethane Substances 0.000 title claims abstract description 16
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000006260 foam Substances 0.000 title abstract description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 46
- 229920000570 polyether Polymers 0.000 claims abstract description 46
- 229920005862 polyol Polymers 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 35
- 150000003077 polyols Chemical class 0.000 claims abstract description 26
- 238000005187 foaming Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000012948 isocyanate Substances 0.000 claims abstract description 21
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 21
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 13
- 239000006261 foam material Substances 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 36
- -1 flame retardant polyol Chemical class 0.000 claims description 23
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 18
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 14
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 14
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 12
- 239000011496 polyurethane foam Substances 0.000 claims description 12
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 12
- 239000003063 flame retardant Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- FRCHKSNAZZFGCA-UHFFFAOYSA-N 1,1-dichloro-1-fluoroethane Chemical compound CC(F)(Cl)Cl FRCHKSNAZZFGCA-UHFFFAOYSA-N 0.000 claims description 7
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 7
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 claims description 6
- RLYCRLGLCUXUPO-UHFFFAOYSA-N 2,6-diaminotoluene Chemical compound CC1=C(N)C=CC=C1N RLYCRLGLCUXUPO-UHFFFAOYSA-N 0.000 claims description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 6
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 claims description 6
- WUKNPIYSKBLCQI-UHFFFAOYSA-N CC(C=C1)=CC=C1C1=CC=C(C)C=C1.N=C=O.N=C=O Chemical compound CC(C=C1)=CC=C1C1=CC=C(C)C=C1.N=C=O.N=C=O WUKNPIYSKBLCQI-UHFFFAOYSA-N 0.000 claims description 6
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 6
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 6
- 229930006000 Sucrose Natural products 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 6
- 239000000600 sorbitol Substances 0.000 claims description 6
- 239000005720 sucrose Substances 0.000 claims description 6
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C08J9/04—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
- 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
- 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
- C08G18/3225—Polyamines
- C08G18/3237—Polyamines aromatic
- C08G18/324—Polyamines aromatic containing only one aromatic 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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4829—Polyethers containing at least three hydroxy groups
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- 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
-
- 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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/10—Rigid foams
-
- 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
- C08J2375/08—Polyurethanes from polyethers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a preparation method of polyurethane rigid foam, which comprises the following steps: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.02 to 0.5, mixed to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 0.5-2, keeping the air pressure in the high-pressure foaming mechanism at 100-200MPa and the temperature at 80-120 ℃; (4) the product of the high-pressure foaming mechanism is turned into a special mould for moulding, and the temperature is controlled to be 20-70 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material. The polyurethane rigid foam prepared by the invention has high strength and excellent performance.
Description
Technical Field
The invention relates to the technical field of polyurethane foam, in particular to a preparation method of polyurethane rigid foam.
Background
Polyurethane foam is a foam material obtained by addition polymerization and foaming of a polyol and isocyanate as raw materials under the action of a catalyst and a blowing agent, for example. The material has excellent physical and mechanical properties, electrical properties, acoustic properties and chemical resistance. The product has low heat conductivity, low density, high strength, low water absorption, high heat and sound insulation, high chemical stability and high recovery rate after impact, so that it is used widely in petroleum, chemical, transportation, building and other fields.
However, the existing polyurethane rigid foam has complex manufacturing method and high cost, and is not suitable for popularization and use.
Disclosure of Invention
The invention aims to provide a preparation method of polyurethane rigid foam, and the prepared polyurethane rigid foam has high strength and excellent performance.
In order to solve the technical problems, the invention provides a preparation method of polyurethane rigid foam, which comprises the following steps: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.02 to 0.5, mixed to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 0.5-2, keeping the air pressure in the high-pressure foaming mechanism at 100-200MPa and the temperature at 80-120 ℃; (4) the product of the high-pressure foaming mechanism is turned into a special mould for moulding, and the temperature is controlled to be 20-70 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material.
Further, the polyether polyol comprises the following components: 10-30 parts of propylene glycol, 10-30 parts of sorbitol, 10-30 parts of diethylene glycol, 10-30 parts of o-toluenediamine, 10-55 parts of sucrose and glycerol polyether polyol and 5-15 parts of glycerol polyether polyol.
Further, the foaming agent is formed by mixing one or more of cyclopentane, n-pentane and monofluorodichloroethane.
Further, the catalyst is one or more of triethylamine, N-ethylmorpholine, triethylene diamine, triethanolamine and triethyl diamine.
Further, a flame-retardant polyol may be added in the step 2, and the functionality of the flame-retardant polyol is 3 to 6.
Further, the isocyanate mixture is selected from one or more of polymethylene polyphenyl polyisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.
Further, the surfactant is polymethylsiloxane.
The invention has the beneficial effects that: the hard foam prepared by the invention utilizes the foaming agent formed by mixing one or more of cyclopentane, n-pentane and monofluorodichloroethane, and can achieve the effects of zero ozone potential and environmental protection; and the whole process is simple, easy to operate and low in cost.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a data comparison diagram of an embodiment of the present invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The first embodiment is as follows:
referring to fig. 1, an embodiment of a method for preparing a rigid polyurethane foam according to the present invention includes the steps of: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.02, mixing to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 0.5, keeping the air pressure in the high-pressure foaming mechanism at 100MPa and the temperature at 80 ℃; (4) turning the product of the high-pressure foaming mechanism into a special mould for moulding, and controlling the temperature to be 20 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material.
The polyether polyol comprises the following components: 10 parts of propylene glycol, 10 parts of sorbitol, 10 parts of diethylene glycol, 10 parts of o-toluenediamine, 10 parts of sucrose and glycerol polyether polyol and 5 parts of glycerol polyether polyol; the foaming agent is formed by mixing one or more of cyclopentane, n-pentane and monofluorodichloroethane; the catalyst is one or more of triethylamine, N-ethylmorpholine, triethylene diamine, triethanolamine and triethyldiamine; a flame-retardant polyol can be added in the step 2, wherein the functionality of the flame-retardant polyol is 3; the isocyanate mixture is selected from one or more of polymethylene polyphenyl polyisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate; the surfactant is polymethylsiloxane.
Example two:
referring to fig. 1, an embodiment of a method for preparing a rigid polyurethane foam according to the present invention includes the steps of: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.1, mixing to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 0.9, keeping the air pressure in the high-pressure foaming mechanism at 130MPa and the temperature at 90 ℃; (4) turning the product of the high-pressure foaming mechanism into a special mould for moulding, and controlling the temperature to be 40 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material.
The polyether polyol comprises the following components: 15 parts of propylene glycol, 15 parts of sorbitol, 15 parts of diethylene glycol, 15 parts of o-toluenediamine, 30 parts of sucrose and glycerol polyether polyol and 9 parts of glycerol polyether polyol; the foaming agent is formed by mixing one or more of cyclopentane, n-pentane and monofluorodichloroethane; the catalyst is one or more of triethylamine, N-ethylmorpholine, triethylene diamine, triethanolamine and triethyldiamine; a flame-retardant polyol can be added in the step 2, wherein the functionality of the flame-retardant polyol is 4; the isocyanate mixture is selected from one or more of polymethylene polyphenyl polyisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate; the surfactant is polymethylsiloxane.
Example three:
referring to fig. 1, an embodiment of a method for preparing a rigid polyurethane foam according to the present invention includes the steps of: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.3, mixing to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 1.5, keeping the air pressure in the high-pressure foaming mechanism at 160MPa and the temperature at 110 ℃; (4) turning the product of the high-pressure foaming mechanism into a special mould for moulding, and controlling the temperature to be 60 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material.
The polyether polyol comprises the following components: 25 parts of propylene glycol, 25 parts of sorbitol, 25 parts of diethylene glycol, 25 parts of o-toluenediamine, 25 parts of sucrose and glycerol polyether polyol and 12 parts of glycerol polyether polyol; the foaming agent is formed by mixing one or more of cyclopentane, n-pentane and monofluorodichloroethane; the catalyst is one or more of triethylamine, N-ethylmorpholine, triethylene diamine, triethanolamine and triethyldiamine; a flame-retardant polyol can be added in the step 2, wherein the functionality of the flame-retardant polyol is 5; the isocyanate mixture is selected from one or more of polymethylene polyphenyl polyisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate; the surfactant is polymethylsiloxane.
Example four:
referring to fig. 1, an embodiment of a method for preparing a rigid polyurethane foam according to the present invention includes the steps of: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.5, mixing to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 2, keeping the air pressure in the high-pressure foaming mechanism at 200MPa and the temperature at 120 ℃; (4) turning the product of the high-pressure foaming mechanism into a special mould for moulding, and controlling the temperature to be 70 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material.
The polyether polyol comprises the following components: 30 parts of propylene glycol, 30 parts of sorbitol, 30 parts of diethylene glycol, 30 parts of o-toluenediamine, 55 parts of sucrose and glycerol polyether polyol and 15 parts of glycerol polyether polyol; the foaming agent is formed by mixing one or more of cyclopentane, n-pentane and monofluorodichloroethane; the catalyst is one or more of triethylamine, N-ethylmorpholine, triethylene diamine, triethanolamine and triethyldiamine; a flame-retardant polyol can be added in the step 2, wherein the functionality of the flame-retardant polyol is 6; the isocyanate mixture is selected from one or more of polymethylene polyphenyl polyisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate; the surfactant is polymethylsiloxane.
The experimental data of the first embodiment, the second embodiment, the third embodiment and the fourth embodiment are shown in fig. 2.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (7)
1. The preparation method of the rigid polyurethane foam is characterized by comprising the following steps: (1) putting the combined polyether, a catalyst and a surfactant into a reaction kettle for mixing to obtain polyether polyol; (2) adding a foaming agent into a reaction kettle, wherein the weight ratio of the combined polyether to the foaming agent is 1: 0.02 to 0.5, mixed to form a first composition; (3) in step 2, quickly adding the first composition and the isocyanate mixture into a high-pressure foaming mechanism in a reaction manner, wherein the weight ratio of the combined polyether to the isocyanate mixture is 1: 0.5-2, keeping the air pressure in the high-pressure foaming mechanism at 100-200MPa and the temperature at 80-120 ℃; (4) the product of the high-pressure foaming mechanism is turned into a special mould for moulding, and the temperature is controlled to be 20-70 ℃; (5) demoulding is carried out at normal temperature to obtain the final polyurethane rigid foam material.
2. The method for producing a rigid polyurethane foam according to claim 1, wherein the polyether polyol comprises: 10-30 parts of propylene glycol, 10-30 parts of sorbitol, 10-30 parts of diethylene glycol, 10-30 parts of o-toluenediamine, 10-55 parts of sucrose and glycerol polyether polyol and 5-15 parts of glycerol polyether polyol.
3. The process for preparing rigid polyurethane foam according to claim 1, wherein the blowing agent is a mixture of one or more of cyclopentane, n-pentane and monofluorodichloroethane.
4. The method of preparing the rigid polyurethane foam according to claim 1, wherein the catalyst is one or more of triethylamine, N-ethylmorpholine, triethylenediamine, triethanolamine, and triethyldiamine.
5. The method for preparing rigid polyurethane foam according to claim 1, wherein a flame retardant polyol having a functionality of 3 to 6 is added in the step 2.
6. The method of claim 1, wherein the isocyanate mixture is selected from the group consisting of polymethylene polyphenyl polyisocyanates, toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate, and dimethylbiphenyl diisocyanate.
7. The method of preparing the rigid polyurethane foam according to claim 1, wherein the surfactant is polymethylsiloxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111059148.9A CN113817213A (en) | 2021-09-10 | 2021-09-10 | Preparation method of polyurethane rigid foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111059148.9A CN113817213A (en) | 2021-09-10 | 2021-09-10 | Preparation method of polyurethane rigid foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113817213A true CN113817213A (en) | 2021-12-21 |
Family
ID=78921818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111059148.9A Pending CN113817213A (en) | 2021-09-10 | 2021-09-10 | Preparation method of polyurethane rigid foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113817213A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114057981A (en) * | 2021-11-09 | 2022-02-18 | 红宝丽集团股份有限公司 | Polyurethane rigid foam and combined polyether used by same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864396A (en) * | 2018-07-24 | 2018-11-23 | 长虹美菱股份有限公司 | A kind of refrigerator hard polyurethane foam foaming formulation and preparation method thereof |
| CN109251304A (en) * | 2018-08-23 | 2019-01-22 | 合肥金菱电器有限公司 | A kind of flame-retardant polyurethane foam plastic and preparation method thereof |
| CN109776747A (en) * | 2018-12-29 | 2019-05-21 | 广州市聚科聚氨酯有限公司 | Modified isocyanate reacts the method for preparing hard polyurethane foam with combined polyether |
| CN110628073A (en) * | 2019-08-15 | 2019-12-31 | 长虹美菱股份有限公司 | Formula and preparation method of polyurethane rigid foam |
| CN111647191A (en) * | 2020-05-14 | 2020-09-11 | 万华化学（宁波）容威聚氨酯有限公司 | Low-conductivity foaming agent composition, polyurethane rigid foam and preparation method thereof |
-
2021
- 2021-09-10 CN CN202111059148.9A patent/CN113817213A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864396A (en) * | 2018-07-24 | 2018-11-23 | 长虹美菱股份有限公司 | A kind of refrigerator hard polyurethane foam foaming formulation and preparation method thereof |
| CN109251304A (en) * | 2018-08-23 | 2019-01-22 | 合肥金菱电器有限公司 | A kind of flame-retardant polyurethane foam plastic and preparation method thereof |
| CN109776747A (en) * | 2018-12-29 | 2019-05-21 | 广州市聚科聚氨酯有限公司 | Modified isocyanate reacts the method for preparing hard polyurethane foam with combined polyether |
| CN110628073A (en) * | 2019-08-15 | 2019-12-31 | 长虹美菱股份有限公司 | Formula and preparation method of polyurethane rigid foam |
| CN111647191A (en) * | 2020-05-14 | 2020-09-11 | 万华化学（宁波）容威聚氨酯有限公司 | Low-conductivity foaming agent composition, polyurethane rigid foam and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114057981A (en) * | 2021-11-09 | 2022-02-18 | 红宝丽集团股份有限公司 | Polyurethane rigid foam and combined polyether used by same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102203156B (en) | Process for the preparation of closed cell rigid polyurethane foams | |
| EP2411436B1 (en) | Production of rigid polyurethane foams and the use thereof | |
| CN102405245B (en) | Polyurethane and polyisocyanurate foams having improved curing performance and fire behavior | |
| KR101425240B1 (en) | Method for the production of rigid polyurethane foam | |
| US8193257B2 (en) | Amine-initiated polyols and rigid polyurethane foam made therefrom | |
| CN105131580A (en) | Halogen-free flame retardant polyurethane flexible foam and preparation method thereof | |
| WO2014037476A1 (en) | Rigid polyurethane foams with reduced shrinkage | |
| KR102092811B1 (en) | Production of foams having improved properties | |
| EP2115027A1 (en) | Cis and/or trans-ortho-cyclohexanediamine-initiated polyols and rigid polyurethane foam made therefrom | |
| WO2017050887A1 (en) | Rigid polyurethane foams with improved insulating property and mechanical property | |
| KR20110079470A (en) | Polyurethane foam-carbon nanotube composite and fabrication method of the same | |
| WO2009027025A1 (en) | Methods of producing rigid polyurethane foams | |
| CN113817213A (en) | Preparation method of polyurethane rigid foam | |
| WO2018060255A1 (en) | Composite flame retardant and polyurethane materials comprising the same | |
| WO2010014691A1 (en) | Rigid polyurethane foam systems based on ortho-cyclohexanediamine-initiated polyols | |
| US20110124759A1 (en) | Polyol blends containing ortho-cyclohexanediamine-initiated polyols for rigid polyurethane foams | |
| US20110077315A1 (en) | Methylene bis(cyclohexylamine)-initiated polyols and rigid polyurethane foam made therefrom | |
| KR101321258B1 (en) | Polyurethane Form Having Improved Insulating Property by Eco-Friendly Foaming Agent | |
| CN106715506A (en) | Polyol composition for rigid polyurethane foam and method for preparing rigid polyurethane foam | |
| KR20090004329A (en) | Polymer foam composite comprising hollow particles and preparation process thereof | |
| JP2001329041A (en) | Production method of rigid foamed synthetic resin | |
| KR102577420B1 (en) | Low temperature flexible polyurethane formulations | |
| JP5403898B2 (en) | Polyol composition for spray foamed rigid polyurethane foam and method for producing spray foamed rigid polyurethane foam | |
| JPH0386720A (en) | Production of polyurethane foam | |
| JPH03195718A (en) | Production of rigid urethane foam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211221 |
|
| RJ01 | Rejection of invention patent application after publication |