CN112175164A - Preparation method of flame-retardant polyurethane foam - Google Patents
Preparation method of flame-retardant polyurethane foam Download PDFInfo
- Publication number
- CN112175164A CN112175164A CN202011096094.9A CN202011096094A CN112175164A CN 112175164 A CN112175164 A CN 112175164A CN 202011096094 A CN202011096094 A CN 202011096094A CN 112175164 A CN112175164 A CN 112175164A
- Authority
- CN
- China
- Prior art keywords
- temperature
- reaction
- preparation
- stirring
- foaming
- 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
Classifications
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
-
- 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
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3878—Low-molecular-weight compounds having heteroatoms other than oxygen having phosphorus
- C08G18/388—Low-molecular-weight compounds having heteroatoms other than oxygen having phosphorus having phosphorus bound to carbon and/or to hydrogen
-
- 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
- C08G18/4833—Polyethers containing oxyethylene units
-
- 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
- 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
- C08G18/6677—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 having 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
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to the field of polyurethane, and discloses a preparation method of flame-retardant polyurethane foam, which comprises the following steps: the method comprises the following steps: adding trihydroxymethyl phosphorus oxide, polyethylene glycol and a catalyst dibutyltin dilaurate into a reaction kettle, heating and vacuumizing for reaction; step two: and (3) cooling, and respectively adding chain extender N-methyldiethanolamine and 1, 4-butanediol, internal cross-linking agent trimethylolpropane and solvent N-methylpyrrolidone. Continuing the reaction; step three: cooling the system to room temperature after the reaction is finished, adding glacial acetic acid for neutralization, taking out a product, adding the product into a container, adding water, and stirring; step four: the stirring speed is increased, and hexamethylene diisocyanate is rapidly added; step five: stirring the mixture at a high speed, and pouring the mixture into a mold for standing and foaming; step six: heating and curing after foaming to obtain the finished product. The flame retardant polyurethane foam obtained by the method of the present invention has excellent flame retardancy and lower density, and can be used in various occasions of conventional foam applications.
Description
Technical Field
The invention relates to the field of polyurethane, in particular to a preparation method of flame-retardant polyurethane foam.
Background
Polyurethane is an organic high molecular polymer containing urethane chain segment structural units, which is prepared by reacting isocyanate with polyester or polyether polyol. Polyurethane is one of the fastest growing organic polymer materials in recent years due to its performance advantages. The polyurethane foam plastic has the characteristics of good cohesiveness, chemical resistance, aging resistance and the like, particularly has good resilience of soft foam and excellent heat insulation performance of hard foam, so the polyurethane foam plastic is widely applied, and is particularly widely applied in the fields of home furniture, transportation pipelines, building materials, aviation materials, refrigeration and heat insulation, electronic equipment and the like.
However, the polyurethane foam structure is in a porous shape, has low apparent density, contains more hydrocarbon segments and has a Limiting Oxygen Index (LOI) of about 18 percent, so the polyurethane foam is extremely easy to burn in air, and the fire spreading speed is high. The flammability of polyurethane foams and the toxicity of their combustion products limit their range of applications. Therefore, there is a need for a polyurethane material having excellent flame retardant properties.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a method for preparing flame retardant polyurethane foam, which has excellent flame retardancy and low density, can be used in various occasions of conventional foam applications, and has low cost.
The specific technical scheme of the invention is as follows: a preparation method of flame retardant polyurethane foam comprises the following steps:
the method comprises the following steps: adding trihydroxymethyl phosphorus oxide, polyethylene glycol and a catalyst dibutyltin dilaurate into a jacket reaction kettle with a stirrer and a condenser, connecting heat conducting oil with the temperature of 110-.
Step two: adjusting the temperature of the high-temperature circulator to 65-75 ℃ without closing the stirrer and the vacuum pump, and respectively adding chain extender N-methyldiethanolamine and 1, 4-butanediol, internal cross-linking agent trimethylolpropane and solvent N-methylpyrrolidone. The reaction is continued for 1.5 to 2.5 hours.
Step three: and after the reaction is finished, cooling the system to room temperature, adding glacial acetic acid for neutralization for 20-40min, taking out a product obtained in the reaction kettle, adding the product into a container, adding water, and starting stirring.
Step four: the stirring speed was increased and hexamethylene diisocyanate was added rapidly.
Step five: and D, stirring the mixture obtained in the step four at a high speed for 5-15s, and pouring the mixture into a mold for standing and foaming.
Step six: heating and curing after foaming to obtain the finished product.
Preferably, in the first step, the density of the trihydroxymethyl phosphorus oxide is 1.4-1.5g/m3The content of phosphorus is 20-21%.
Preferably, in the first step, the mass ratio of the trihydroxymethyl phosphorus oxide to the polyethylene glycol is 1: (5-7).
Preferably, in the first step, the pressure of the reaction system is 0.08-0.12 MPa.
Preferably, in the second step, when the temperature of the system is reduced to 65-75 ℃, chain extenders N-methyldiethanolamine and 1, 4-butanediol, internal crosslinking agent trimethylolpropane and solvent N-methylpyrrolidone are added.
Preferably, in the second step, N-methyldiethanolamine, 1, 4-butanediol and trimethylolpropane are added in the order of 8 to 9%, 3 to 3.5% and 1.5 to 1.7% by mass of the reaction system.
Preferably, in the third step, the adding amount of water is 2-4wt% of the polyethylene glycol; the adding amount of the glacial acetic acid is 3-6wt% of the reaction system.
Preferably, in the fourth step, the speed of the stirrer is 2500-;
preferably, in the fifth step, the die is placed in an oven with the temperature of 35-45 ℃ for preheating; foaming is considered to be complete by expanding the foam in the mold until it solidifies.
Preferably, in the sixth step, the curing time is 20-30h, and the curing temperature is 70-90 ℃.
Compared with the prior art, the invention has the beneficial effects that: the invention firstly rapidly stirs trihydroxymethyl phosphorus oxide and polyethylene glycol solution at normal temperature and normal pressure to uniformly mix all components, and then reacts with hexamethylene diisocyanate to foam to prepare the flame-retardant polyurethane foam. The flame-retardant polyurethane foam prepared by the invention has the oxygen index of 24-26 percent and the density of 0.035-0.040g/cm2The method can be used in various occasions of the traditional foam application, and has the advantages of low cost, simple method and obvious flame retardant effect.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
(1) 30.0g of polyethylene glycol and 5.0g of trihydroxymethyl phosphorus oxide were introduced into a jacketed reaction vessel equipped with a stirrer and a condenser, and 1ml of dibutyltin dilaurate was added. And pouring a proper amount of heat conducting oil into the high-temperature circulator, connecting the high-temperature circulator with the reaction kettle, opening the heating cycle of the high-temperature circulator, and setting the temperature to be 120 ℃. Then connecting the jacketed reaction kettle with a vacuum pump, starting the vacuum pump to enable the system pressure to be 0.1MPa, starting a stirrer, and accelerating the material mixing reaction for 2.5 h.
(2) And (4) adjusting the temperature of the high-temperature circulator to 70 ℃ without closing the stirrer and the vacuum pump, and waiting for the temperature of the reaction kettle to be reduced. 2.98g of N-Methyldiethanolamine (MDEA), 1.12g of 1, 4-Butanediol (BDO) and 0.56g of Trimethylolpropane (TMP) are weighed. 0.56g of Trimethylolpropane (TMP) was dissolved with a small amount of N-methylpyrrolidone (NMP). And when the temperature of the reaction kettle is reduced to 70 ℃, adding the weighed medicine into the reaction kettle, and continuing to react for 2.0 hours.
(3) After the reaction is finished, the system is cooled to room temperature, 1.75g of glacial acetic acid is added for neutralization for 30min, then the product obtained in the reaction kettle is taken out and added into a round-bottom flask, 1.05g of water is added, the stirring is started, and the speed of the stirrer is 1500r/min, so that the materials are fully mixed.
(4) 20g of hexamethylene diisocyanate are weighed and quickly added into a round-bottom flask, the stirring speed of a stirrer is adjusted to 3000r/min, and after 10s, the mixed solution in the round-bottom flask is poured into a mold which is preheated to 40 ℃.
(5) Standing in a mold for foaming for 30min, and then putting the cured foam into an oven at 80 ℃ to finish the curing process for 24 h.
The detection proves that the obtained polyurethane foam has the oxygen index of 26 percent and the density of 0.035g/cm3。
Example 2
(1) 45.0g of polyethylene glycol and 9.0g of trihydroxymethyl phosphorus oxide were introduced into a jacketed reaction vessel equipped with a stirrer and a condenser, and 1ml of dibutyltin dilaurate was added. And pouring a proper amount of heat conducting oil into the high-temperature circulator, connecting the high-temperature circulator with the reaction kettle, opening the heating cycle of the high-temperature circulator, and setting the temperature to be 120 ℃. Then connecting the jacketed reaction kettle with a vacuum pump, starting the vacuum pump to enable the system pressure to be 0.1MPa, starting a stirrer, and accelerating the material mixing reaction for 2.5 h.
(2) And (4) adjusting the temperature of the high-temperature circulator to 70 ℃ without closing the stirrer and the vacuum pump, and waiting for the temperature of the reaction kettle to be reduced. 4.59g of N-Methyldiethanolamine (MDEA), 1.73g of 1, 4-Butanediol (BDO) and 0.86g of Trimethylolpropane (TMP) were weighed. 0.86g of Trimethylolpropane (TMP) was dissolved with a small amount of N-methylpyrrolidone (NMP). And when the temperature of the reaction kettle is reduced to 70 ℃, adding the weighed medicine into the reaction kettle, and continuing to react for 2.0 hours.
(3) After the reaction is finished, the system is cooled to room temperature, 1.75g of glacial acetic acid is added for neutralization for 30min, then the product obtained in the reaction kettle is taken out and added into a round-bottom flask, 1.62g of water is added, the stirring is started, and the speed of the stirrer is 1500r/min, so that the materials are fully mixed.
(4) 32g of hexamethylene diisocyanate are weighed and quickly added into a round-bottom flask, the stirring speed of a stirrer is adjusted to 3000r/min, and after 10s, the mixed solution in the round-bottom flask is poured into a mold which is preheated to 40 ℃.
(5) Standing in a mold for foaming for 30min, and then putting the cured foam into an oven at 80 ℃ to finish the curing process for 24 h.
The detection proves that the obtained polyurethane foam has the oxygen index of 24 percent and the density of 0.038g/cm3。
Example 3
(1) 63.0g of polyethylene glycol and 9.0g of trihydroxymethyl phosphorus oxide were introduced into a jacketed reaction vessel equipped with a stirrer and a condenser, and 1ml of dibutyltin dilaurate was added. And pouring a proper amount of heat conducting oil into the high-temperature circulator, connecting the high-temperature circulator with the reaction kettle, opening the heating cycle of the high-temperature circulator, and setting the temperature to be 120 ℃. Then connecting the jacketed reaction kettle with a vacuum pump, starting the vacuum pump to enable the system pressure to be 0.1MPa, starting a stirrer, and accelerating the material mixing reaction for 2.5 h.
(2) And (4) adjusting the temperature of the high-temperature circulator to 70 ℃ without closing the stirrer and the vacuum pump, and waiting for the temperature of the reaction kettle to be reduced. 6.12g of N-Methyldiethanolamine (MDEA), 2.30g of 1, 4-Butanediol (BDO) and 1.15g of Trimethylolpropane (TMP) are weighed. 1.15g of Trimethylolpropane (TMP) was dissolved with a small amount of N-methylpyrrolidone (NMP). And when the temperature of the reaction kettle is reduced to 70 ℃, adding the weighed medicine into the reaction kettle, and continuing to react for 2.0 hours.
(3) After the reaction is finished, the system is cooled to room temperature, 1.75g of glacial acetic acid is added for neutralization for 30min, then the product obtained in the reaction kettle is taken out and added into a round-bottom flask, 2.16g of water is added, the stirring is started, and the speed of the stirrer is 1500r/min, so that the materials are fully mixed.
(4) 36g of hexamethylene diisocyanate was weighed and quickly added into a round-bottom flask, the stirring speed of the stirrer was adjusted to 3000r/min, and after 10s, the mixture in the round-bottom flask was poured into a mold which had been preheated to 40 ℃.
(5) Standing in a mold for foaming for 30min, and then putting the cured foam into an oven at 80 ℃ to finish the curing process for 24 h.
The detection proves that the obtained polyurethane foam has the oxygen index of 25 percent and the density of 0.040g/cm3。
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A preparation method of flame-retardant polyurethane foam is characterized by comprising the following steps:
the method comprises the following steps: adding trihydroxymethyl phosphorus oxide, polyethylene glycol and a catalyst dibutyltin dilaurate into a jacket reaction kettle with a stirrer and a condenser, connecting heat conducting oil with the temperature of 110-;
step two: adjusting the temperature of the high-temperature circulator to 65-75 ℃ without closing the stirrer and the vacuum pump, respectively adding chain extender N-methyldiethanolamine and 1, 4-butanediol, internal cross-linking agent trimethylolpropane and solvent N-methylpyrrolidone, and continuously reacting for 1.5-2.5 h;
step three: cooling the system to room temperature after the reaction is finished, adding glacial acetic acid for neutralization for 20-40min, taking out a product obtained in the reaction kettle, adding the product into a container, adding water, and starting stirring;
step four: the stirring speed is increased, and hexamethylene diisocyanate is rapidly added;
step five: stirring the mixture obtained in the step four at a high speed for 5-15s, and pouring the mixture into a mold for standing and foaming;
step six: heating and curing after foaming to obtain the finished product.
2. The method of claim 1, wherein in step one, the density of the trihydroxymethyl phosphorus oxide is 1.4-1.5g/m3The content of phosphorus is 20-21%.
3. The preparation method of claim 1, wherein in the first step, the mass ratio of the trihydroxymethyl phosphorus oxide to the polyethylene glycol is 1: (5-7).
4. The process according to claim 1, wherein in the first step, the pressure of the reaction system is 0.08 to 0.12 MPa.
5. The preparation method of claim 1, wherein in the second step, when the temperature of the system is reduced to 65-75 ℃, chain extenders N-methyldiethanolamine and 1, 4-butanediol, internal crosslinking agent trimethylolpropane and solvent N-methylpyrrolidone are added.
6. The preparation method according to claim 1, wherein in the second step, the addition amounts of N-methyldiethanolamine, 1, 4-butanediol and trimethylolpropane are respectively 8-9%, 3-3.5% and 1.5-1.7% of the mass of the reaction system.
7. The preparation method according to claim 1, wherein in the third step, the water is added in an amount of 2 to 4wt% based on the polyethylene glycol; the adding amount of the glacial acetic acid is 3-6wt% of the reaction system.
8. The method as set forth in claim 1, wherein in the fourth step, the stirrer speed is 2500-3500r/min, and the mass of hexamethylene diisocyanate is 3-4 times that of trihydroxymethyl phosphorus oxide.
9. The preparation method according to claim 1, wherein in the fifth step, the mold is placed in an oven at 35-45 ℃ for preheating; foaming is considered to be complete by expanding the foam in the mold until it solidifies.
10. The method according to claim 1, wherein in the sixth step, the aging time is 20 to 30 hours, and the aging temperature is 70 to 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011096094.9A CN112175164A (en) | 2020-10-14 | 2020-10-14 | Preparation method of flame-retardant polyurethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011096094.9A CN112175164A (en) | 2020-10-14 | 2020-10-14 | Preparation method of flame-retardant polyurethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112175164A true CN112175164A (en) | 2021-01-05 |
Family
ID=73950571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011096094.9A Pending CN112175164A (en) | 2020-10-14 | 2020-10-14 | Preparation method of flame-retardant polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112175164A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB967834A (en) * | 1961-04-24 | 1964-08-26 | Rhone Poulenc Sa | Cellular articles of hydrophilic character and their production |
| US3838075A (en) * | 1972-02-17 | 1974-09-24 | Bayer Ag | Process for the production of hydrophilic foam plastics |
| CA2535067A1 (en) * | 2003-08-27 | 2005-03-10 | Basf Aktiengesellschaft | Foam regulating agent based on cationic urethane oligomers |
| CN102115546A (en) * | 2010-12-29 | 2011-07-06 | 清华大学 | Preparation method of hydrophilic cation type polyurethane foam plastic by means of direct foaming |
| CN102292365A (en) * | 2009-01-24 | 2011-12-21 | 拜尔材料科学股份公司 | Dispersed two-component polyurethane foams |
| CN104844777A (en) * | 2015-04-22 | 2015-08-19 | 湖北大学 | Preparation method of soybean oil-based flame-retardant hard polyurethane foam |
| CN107090070A (en) * | 2017-05-11 | 2017-08-25 | 东莞泰康泡绵有限公司 | A kind of hydrophilic polyurethane bubble silk floss and preparation method thereof |
| CN109851750A (en) * | 2019-02-22 | 2019-06-07 | 四川大学 | A kind of preparation method of strand hard section resistance combustion polyurethane foam |
| CN111004379A (en) * | 2019-12-02 | 2020-04-14 | 浙江理工大学桐乡研究院有限公司 | Preparation method of flame-retardant polyol with high phosphorus content and multiple functionality degrees |
| CN111040125A (en) * | 2019-12-27 | 2020-04-21 | 陕西科技大学 | Composite fulvic acid antibacterial sponge matrix and preparation method and application thereof |
| CN113549222A (en) * | 2021-08-04 | 2021-10-26 | 中国科学技术大学 | Hyperbranched flame retardant based on phosphorus-silicon-nitrogen synergistic flame retardance and preparation method and application thereof |
-
2020
- 2020-10-14 CN CN202011096094.9A patent/CN112175164A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB967834A (en) * | 1961-04-24 | 1964-08-26 | Rhone Poulenc Sa | Cellular articles of hydrophilic character and their production |
| US3838075A (en) * | 1972-02-17 | 1974-09-24 | Bayer Ag | Process for the production of hydrophilic foam plastics |
| CA2535067A1 (en) * | 2003-08-27 | 2005-03-10 | Basf Aktiengesellschaft | Foam regulating agent based on cationic urethane oligomers |
| CN102292365A (en) * | 2009-01-24 | 2011-12-21 | 拜尔材料科学股份公司 | Dispersed two-component polyurethane foams |
| CN102115546A (en) * | 2010-12-29 | 2011-07-06 | 清华大学 | Preparation method of hydrophilic cation type polyurethane foam plastic by means of direct foaming |
| CN104844777A (en) * | 2015-04-22 | 2015-08-19 | 湖北大学 | Preparation method of soybean oil-based flame-retardant hard polyurethane foam |
| CN107090070A (en) * | 2017-05-11 | 2017-08-25 | 东莞泰康泡绵有限公司 | A kind of hydrophilic polyurethane bubble silk floss and preparation method thereof |
| CN109851750A (en) * | 2019-02-22 | 2019-06-07 | 四川大学 | A kind of preparation method of strand hard section resistance combustion polyurethane foam |
| CN111004379A (en) * | 2019-12-02 | 2020-04-14 | 浙江理工大学桐乡研究院有限公司 | Preparation method of flame-retardant polyol with high phosphorus content and multiple functionality degrees |
| CN111040125A (en) * | 2019-12-27 | 2020-04-21 | 陕西科技大学 | Composite fulvic acid antibacterial sponge matrix and preparation method and application thereof |
| CN113549222A (en) * | 2021-08-04 | 2021-10-26 | 中国科学技术大学 | Hyperbranched flame retardant based on phosphorus-silicon-nitrogen synergistic flame retardance and preparation method and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| KAIBO ZHANG，等: "Flame retardant polyurethane foam prepared from compatible blends of soybean oil-based polyol and phosphorus containing polyol", 《JOURNAL OF APPLIED POLYMER SCIENCE》 * |
| 刘建军，等: "可逆交联聚电解质微胶囊的制备及表征", 《浙江理工大学学报(自然科学版)》 * |
| 王德源，等: "阳离子型聚氨酯泡沫载体的制备及对活性污泥的吸附性能", 《高分子学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111560108B (en) | Full-water polyurethane rigid foam and preparation method and application thereof | |
| CN110105525B (en) | NDI-based polyurethane microporous elastomer resistant to damp-heat aging and preparation method thereof | |
| CN114835872B (en) | High-flame-retardance low-heat-conductivity polyurethane foam material and preparation method thereof | |
| CN105440243A (en) | Polyurethane composition for automobile sunroof buffer pad, and preparation method of polyurethane composition | |
| CN109970942A (en) | A kind of polyurethane wet bass of cold-resistant hydrolysis and preparation method thereof | |
| CN115074073A (en) | Flame-retardant polyurethane sealant and preparation method thereof | |
| CN111117465B (en) | Environment-friendly single-component polyurethane waterproof coating | |
| CN112708340A (en) | Anti-sagging single-component polyurethane waterproof coating capable of being sprayed and constructed | |
| CN113249101A (en) | Preparation method of water-soluble composite temporary plugging agent for diversion fracturing | |
| CN112175164A (en) | Preparation method of flame-retardant polyurethane foam | |
| CN112358594B (en) | Composite material for automobile interior trim skin and preparation method and application thereof | |
| CN109439267A (en) | A kind of adhesive and preparation method thereof introducing epoxy resin | |
| CN114410201A (en) | Waterproof coating and preparation method thereof | |
| CN113845640B (en) | Polyether polyol for polyurethane foam plastic and preparation method and application thereof | |
| CN115093553B (en) | Tetrabromobisphenol A polyether ester polyol, preparation method thereof, polyurethane rigid foam and preparation method thereof | |
| CN111777887A (en) | Flame-retardant heat-resistant waterborne polyurethane coating and preparation method thereof | |
| CN114478989B (en) | Flame-retardant polyurethane and preparation method thereof | |
| CN110845838A (en) | Polycarbonate type polyurethane film and preparation thereof | |
| CN112552631A (en) | Degradable pearl cotton and low-temperature degradation treatment process thereof | |
| CN113621128A (en) | Safety phenolic resin modified polyurethane functional material and preparation method thereof | |
| CN116284652B (en) | Steel sleeve steel polyurethane heat-insulating pipe and preparation method thereof | |
| CN116410434B (en) | Polyurethane rigid foam combined polyester, preparation method and application | |
| CN117801202B (en) | High-strength high-stability high-flame-retardance polyurethane foam material without ODS (oxide dispersion medium) substances and preparation method and application thereof | |
| CN108409931A (en) | A kind of preparation method of polyurethane thermal insulation wallboard for building | |
| CN115304762B (en) | Preparation method and application of reactive halogen-free flame-retardant polyether polyol |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210105 |