CN105367738A - Rigid polyurethane foam plastic achieving flame retarding through structural flame retardant and preparation method of rigid polyurethane foam plastic - Google Patents
Rigid polyurethane foam plastic achieving flame retarding through structural flame retardant and preparation method of rigid polyurethane foam plastic Download PDFInfo
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- CN105367738A CN105367738A CN201510944391.7A CN201510944391A CN105367738A CN 105367738 A CN105367738 A CN 105367738A CN 201510944391 A CN201510944391 A CN 201510944391A CN 105367738 A CN105367738 A CN 105367738A
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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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
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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
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
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- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a rigid polyurethane foam plastic achieving flame retarding through structural flame retardant. The rigid polyurethane foam plastic is prepared from white materials, the structural flame retardant and black materials according to the mass ratio of 65-90:10-35:120. The white materials are formed by mixing polyether polyol, dibutyltin dilaurate, silicon-carbon bond type foam stabilizer, a tertiary amine catalyst, 2,4,6-tris(dimethyl amine methyl)phenol, a foaming agent and water. The black materials are a mixture of isocyanate and methylene diphenyl diisocyanate. The structural flame retardant is named N-9,10-dihydro-9-oxa-10-phosphonia-10-oxidized phenanthryl isopropyl-N,N-bi-(2-ethoxyl)amine. The foam plastic is high in flame retardation and good in structural stability and compatibility. The invention further discloses a preparation method of the rigid polyurethane foam plastic. According to the preparation method, foam forming is achieved in one step, operation is easy, and process parameters are easy to control.
Description
Technical field
The invention belongs to flame retarded polyurethane-foam plastics arts, be specifically related to flame retardant rigid urethane foam of a kind of structure-type and preparation method thereof.
Background technology
Urethane foam is because of its excellent stuctures and properties, and applied to the industry-by-industry of economic production widely, especially building, freezer, automobile, space flight and aviation etc., be developed into one of requisite material in the many fields of national economy.But because porous plastics has loose porous, low density feature, urethane is met fire and is very easily burnt, and not easily from putting out, release smog and toxic gas during burning, hazardness is large simultaneously, so improve flame retardant resistance become the gordian technique that solution needed badly by urethane foam.
Fire retardant has addition type and response type two kinds, and wherein additive flame retardant occuping market is leading, accounts for greatly 85% of product, its major cause is that its preparation technology is simple, price is low, can reduce costs, but additive flame retardant also also exists insurmountable problem: addition is large; Structural stability and and polyurethane matrix between poor compatibility; Because of migration volatile loss and may cause thus be difficult to expect chemical reaction, affect flame retardant effect etc.
Structure-type fire retardant by flame retarding construction unit, can be incorporated into main chain or the side base of polyether polyols with reduced unsaturation by chemical reaction, give the flame retardant properties of urethane essence, can solve the problems such as the stability of product, consistency, improves flame retarding efficiency.Therefore, structure-type flame retardant instead additive flame retardant is the trend of following fire-retardant market development.
Summary of the invention
First technical problem to be solved by this invention is to provide the flame retardant rigid urethane foam of a kind of structure-type, and this porous plastics flame retardant properties is high, structural stability and consistency good.
Second technical problem to be solved by this invention is to provide the preparation method of the flame retardant rigid urethane foam of said structure type, the method one-shot molding, and simple to operate, processing parameter is more easy to control.
Above-mentioned first technical problem to be solved by this invention is achieved through the following technical solutions: the flame retardant rigid urethane foam of a kind of structure-type, it is characterized in that being made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 65 ~ 90:10 ~ 35:120, and wherein said white material is mixed by the raw material of following proportion by weight:
Further, the proportion by weight of white material of the present invention, structure-type fire retardant and black material three is preferably 70:30:120.
Black material of the present invention is preferably the mixture of isocyanic ester and diphenylmethanediisocyanate.This black material preferably originates from the PM-200 (technical grade) that Guangdong Wan Hua urethane company limited produces, its viscosity (25 DEG C) is preferably 150 ~ 250mPas, and isocyanic acid (-NCO) functional group percentage composition (%Wt) is 30.2 ~ 32.0.
In fact, the black material of other manufacturer production well known in the art is also fine, commercially available prod.
The name of structure-type fire retardant of the present invention is called N-9, and the assorted-10-phospha-10-of 10-dihydro-9-oxy is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine, and its molecular structural formula is:
Described structure-type fire retardant is prepared by following two-step reaction:
(1) the first step obtains intermediate product 2,2-dimethyl-3-(2-hydroxyethyl)-1,3-oxazolidine;
(2) second step obtains the assorted-10-phospha-10-of target fire-retardant N-9,10-dihydro-9-oxy and is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine;
Concrete reaction formula is as follows:
The first step:
Second step:
This structure-type fire retardant is halogen-free phosphorus-containing/N structure type fire retardant, and its preparation method is as follows:
A () gets diethanolamine, acetone mixing after, add Anhydrous potassium carbonate, under the condition of water reflux condensation mode, react 24 hours under room temperature, reacted the remaining salt of wormwood of rear removed by filtration, underpressure distillation removes unreacted acetone, obtains intermediate product 2,2-dimethyl-3-(2-hydroxyethyl)-1,3-oxazolidine;
B () gets 9,10-dihydro-9-oxy is mixed-10-phospho hetero phenanthrene-10-oxide compound, with intermediate product 2,2-dimethyl-3-(2-hydroxyethyl)-1, after the mixing of 3-oxazolidine, add methyl alcohol, under the condition of reflux condensation mode, after reaction 1.0 ~ 1.5h, flask is transferred in 55 ~ 60 DEG C of water-baths and reacts 4 hours, obtain end product N-9, the assorted-10-phospha-10-of 10-dihydro-9-oxy is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine.
Wherein the mol ratio of diethanolamine and acetone is about 1:1.5, and the mol ratio of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and 2,2-dimethyl-3-(2-hydroxyethyl)-1,3-oxazolidine is about 1:1.
Its flame retarding construction unit can be incorporated into main chain or the side base of polyether polyols with reduced unsaturation by this structure-type fire retardant, gives the flame retardant properties of urethane essence, can solve the stability of product, compatibility problem, improve its flame retarding efficiency.：
As one of the present invention preferred embodiment, tertiary amine catalyst of the present invention is preferably dipropylene glycol solution (rain field (Shanghai) the Chemical Co., Ltd. production of triethylene diamine, other producers also can), wherein the mass percentage of triethylene diamine is 33%.
As another preferred embodiment of the present invention, described whipping agent is preferably pentamethylene (can purchased from Maoming City Bao Run Chemical Co., Ltd., other producers also can) or the pentamethylene aqueous solution.
Second technical problem to be solved by this invention is achieved through the following technical solutions: the preparation method of the flame retardant rigid urethane foam of said structure type, comprises the following steps:
(1) by above-mentioned formula with magnitude relation, get each raw material and make white material;
(2) will expect in vain to mix by above-mentioned magnitude relation with structure-type fire retardant, obtain the mixture of white material and fire retardant;
(3) joined by above-mentioned magnitude relation in the mixture of white material and fire retardant by black material, mixing, is placed in mould and foams;
(4) will foam product completely, the demoulding of slaking after fixing, i.e. the obtained flame retardant rigid urethane foam of structure-type.
In the preparation method of the flame retardant rigid urethane foam of said structure type: in step (4), curing temperature is 50 ~ 60 DEG C, and the curing time is 1.5 ~ 2.5h.
Preferably, the preparation method of the flame retardant rigid urethane foam of said structure type in the present invention, specifically comprises the following steps:
(1) each raw material polyether glycol, dibutyl tin laurate, silicon-carbon of bonding foam stabilizer, the tertiary amine catalyst, 2 of white material will be made, 4,6-tri-(dimethylamino methyl) phenol, whipping agent and water are by above-mentioned proportion by weight mixing, and high-speed stirring, obtains white material;
(2) the white material of preparation in step (1) and structure-type fire retardant are mixed by above-mentioned proportion by weight, high-speed stirring, obtains the mixture of white material and structure-type fire retardant;
(3) black material is poured into rapidly in the mixture of white material and the structure-type fire retardant prepared in step (2) by above-mentioned magnitude relation, high-speed stirring 10 ~ 15s, after mixing, inject mould rapidly, foam completely;
(4) by the mixture completely that foams in above-mentioned (3), slaking 2 hours under the temperature environment of 50 ~ 60 DEG C, cure and demold, obtains flame retarded rigid polyurethane foams.
Compared with prior art, the present invention has the following advantages:
(1) the structure-type fire retardant in the present invention is halogen-free phosphorus-containing/N structure type fire retardant, it is a kind of alcohols of two functional groups, can by its flame retarding construction unit, main chain or the side base of polyether polyols with reduced unsaturation is incorporated into by chemical reaction, give the flame retardant properties of urethane essence, effectively can improve the flame retarding efficiency of porous plastics;
(2) the present invention adopts structure-type fire retardant, halogen-free phosphorus-containing/nitrogen compound is combined with polyurethane matrix with the form of covalent linkage, improve the consistency of fire retardant and matrix, and the thermostability of porous plastics, also overcome the shortcoming of moving after fire retardant is long placed in simultaneously;
(3) porous plastics made of the present invention, owing to have employed structure-type fire retardant, in combustion, phosphorous coke layer can be produced, the amount of being fuming and melting dropping can be reduced, shorten self-extinguishing time, also can reduce the discharge of toxic gas, this porous plastics is a kind of environmentally friendly fire retardant material simultaneously;
(4) preparation method of the flame retardant rigid urethane foam of structure-type of the present invention, simple to operate, processing parameter is more easy to control; The hard polyurethane foams obtained has that flame retardant effect is high, good physical performance, toxicity are little, the feature of long service life.
Embodiment
Following examples are used for illustrating and implementing the present invention, belong to the protection domain of invention, and those skilled in the art all can realize object of the present invention according to above disclosed content.
In following examples, polyether glycol is preferably produced by Jiangsu Zhongshang Chemical Co., Ltd., dibutyl tin laurate is preferably produced by Jining Heng Tai Chemical Co., Ltd., silicon-carbon of bonding foam stabilizer is preferably produced by Hangzhou Bao Er get organosilicon company limited, 2, 4, 6-tri-(dimethylamino methyl) phenol is preferably produced by Tianjin Zhong Xinkaitai Chemical Co., Ltd., the dipropylene glycol solution (production of rain field (Shanghai) Chemical Co., Ltd.) of amines catalyst triethylene diamine, wherein the mass percentage of triethylene diamine is 33%, whipping agent pentamethylene (purchased from Maoming City Bao Run Chemical Co., Ltd.).
Each manufacturer is only enumerated above, and other producers in this area are also fine, commercially available prod.
Comparative example 1
The flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material and black material, the proportion by weight of the two is 100:120, and wherein white material is mixed by the raw material of following proportion by weight:
Black material is isocyanic ester and mixtures of diisocyanates and diphenylmethane.
The preparation method of the flame retardant rigid urethane foam of said structure type is as follows:
Adopt a step foam process, carry out the preparation of flame retarded rigid polyurethane foams plastics, first, the white material of preparation, polyether glycol is got by the consumption relation another name of each raw material of above-mentioned white material, dibutyl tin laurate, silicon-carbon of bonding foam stabilizer, the dipropyleneglycol solution of tertiary amine catalyst triethylene diamine, wherein the mass percentage of triethylene diamine is 33%, 2, 4, 6-tri-(dimethylamino methyl) phenol, whipping agent (pentamethylene), water is Homogeneous phase mixing in high-speed stirring, the mixed solution obtained is called white material, then by above-mentioned magnitude relation, a certain amount of white material is poured in container, airtight rear for subsequent use.Take 100g to expect in vain to pour another container into, taking the black material of 120g adds rapidly in ready white material, high-speed stirring 10 ~ 15s, mould is injected after fully mixing, curing and demolding, be that 50 ~ 60 DEG C of baking oven inside holding 2h carry out slaking in temperature, remove appearance crust layer, obtain rigid urethane foam sample.
Embodiment 1
With comparative example 1 unlike, the flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 90:10:120.
Wherein white material formula and the same comparative example of black material.
The name of structure-type fire retardant is called N-9, and the assorted-10-phospha-10-of 10-dihydro-9-oxy is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine, and its molecular structural formula is:
This structure-type fire retardant is prepared by following two-step reaction:
(1) the first step obtains intermediate product 2,2-dimethyl-3-(2-hydroxyethyl)-1,3-oxazolidine;
(2) second step obtains the assorted-10-phospha-10-of target fire-retardant N-9,10-dihydro-9-oxy and is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine;
Concrete reaction formula is as follows:
The first step:
Second step:
Concrete, structure-type fire retardant is halogen-free phosphorus-containing/N structure type fire retardant, and its preparation process is as follows:
Take diethanolamine 1mol (105.15g), acetone 1.5mol (87.12g) pours single port flask into, stirs, mixes.Then add Anhydrous potassium carbonate 1mol (about 138g), under the condition of water reflux condensation mode, react 24 hours under room temperature, reacted the remaining salt of wormwood of rear removed by filtration, underpressure distillation removes unreacted acetone.Obtain intermediate product 2,2-dimethyl-3-(2-hydroxyethyl)-1,3-oxazolidine.
Take 9, 10-dihydro-9-oxy is mixed-10-phospho hetero phenanthrene-10-oxide compound 217.45g (about 1mol), grind to form powdery, pour into and above-mentioned intermediate material 2 is housed, 2-dimethyl-3-(2-hydroxyethyl)-1, in the flask of 3-oxazolidine 145.20g (about 1mol), then 50mL methyl alcohol is added, under the condition of reflux condensation mode, after reaction 1.0 ~ 1.5h, flask is transferred in 55 DEG C to 60 DEG C water-baths and reacts 4 hours, obtain end product N-9, assorted-10-phospha-the 10-of 10-dihydro-9-oxy is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine, slowly be reduced to room temperature, product is slowly separated out, cryogenic freezing, separate out completely to product, then suction filtration, obtain white granular solid, dry 7 hours in 80 DEG C of baking ovens, weigh and obtain 255.20g crystal, productive rate is 70.23%.
The preparation method of the flame retardant rigid urethane foam of this structure-type is as follows:
(1) each raw material polyether glycol, dibutyl tin laurate, silicon-carbon of bonding foam stabilizer, the tertiary amine catalyst, 2 of white material will be made, 4,6-tri-(dimethylamino methyl) phenol, whipping agent and water are by above-mentioned proportion by weight mixing, and high-speed stirring, obtains white material;
(2) the white material of preparation in step (1) and structure-type fire retardant are mixed by above-mentioned proportion by weight, high-speed stirring, obtains the mixture of white material and structure-type fire retardant;
(3) black material is poured into rapidly in the mixture of white material and the structure-type fire retardant prepared in step (2) by above-mentioned magnitude relation, high-speed stirring 10 ~ 15s, after mixing, inject mould rapidly, foam completely;
(4) by the mixture completely that foams in above-mentioned (3), slaking 2 hours under the temperature environment of 50 ~ 60 DEG C, cure and demold, obtains flame retarded rigid polyurethane foams.
Embodiment 2
As different from Example 1, the flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 85:15:120.
The preparation method of the flame retardant rigid urethane foam of this structure-type is with embodiment 1.
Embodiment 3
As different from Example 1, the flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 80:20:120.
The preparation method of the flame retardant rigid urethane foam of this structure-type is with embodiment 1.
Embodiment 4
As different from Example 1, the flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 75:25:120.
The preparation method of the flame retardant rigid urethane foam of this structure-type is with embodiment 1.
Embodiment 5
As different from Example 1, the flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 70:30:120.
The preparation method of the flame retardant rigid urethane foam of this structure-type is with embodiment 1.
Embodiment 6
As different from Example 1, the flame retardant rigid urethane foam of the structure-type that the present embodiment provides, be made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 65:35:120.
The preparation method of the flame retardant rigid urethane foam of this structure-type is with embodiment 1.
The flame retardant rigid urethane foam of structure-type prepared by comparative example 1 and embodiment 1-6, by the content of change structure type fire retardant, obtained 7 kinds of different flame retarded rigid polyurethane foams plastic raw materials proportionings and oxygen index thereof are as shown in Table 1 below.
The rigid urethane foam proportioning raw materials that seven kinds, table 1 is different and oxygen index thereof
Flame retarded rigid polyurethane foams plastics oxygen index of the present invention is the HC-2 type oxygen index measuring instrument test adopting analytical instrument factory of Jiangning county, Zhejiang to produce, and testing standard is according to GB/T2406.1-2008.
In the above specific embodiment 1-6, best preferably case study on implementation is embodiment 5.
Embodiment 7
As different from Example 1, wherein white material is mixed by the raw material of following proportion by weight:
In the step (4) of the preparation method of the flame retardant rigid urethane foam of this structure-type, curing temperature is 60 DEG C, and the curing time is 1.5h.
Embodiment 8
As different from Example 1, wherein white material is mixed by the raw material of following proportion by weight:
In the step (4) of the preparation method of the flame retardant rigid urethane foam of this structure-type, curing temperature is 50 DEG C, and the curing time is 2.5h.
Above embodiment is only for setting forth the present invention, and protection scope of the present invention is not only confined to above embodiment.Those skilled in the art, according to above content disclosed by the invention and scope that each parameter is got, all can realize object of the present invention.
Claims (9)
1. the flame retardant rigid urethane foam of structure-type, it is characterized in that being made up of white material, structure-type fire retardant and black material, the proportion by weight of three is 65 ~ 90:10 ~ 35:120, and wherein said white material is mixed by the raw material of following proportion by weight:
2. the flame retardant rigid urethane foam of structure-type according to claim 1, is characterized in that: the proportion by weight of described white material, structure-type fire retardant and black material three is 70:30:120.
3. the flame retardant rigid urethane foam of structure-type according to claim 1 and 2, is characterized in that: described black material is the mixture of isocyanic ester and diphenylmethanediisocyanate.
4. the flame retardant rigid urethane foam of structure-type according to claim 1 and 2, it is characterized in that: the name of described structure-type fire retardant is called N-9, assorted-10-phospha-the 10-of 10-dihydro-9-oxy is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine, its molecular structural formula is:
5. the flame retardant rigid urethane foam of structure-type according to claim 4, is characterized in that described structure-type fire retardant is prepared by following two-step reaction:
(1) the first step obtains intermediate product 2,2-dimethyl-3-(2-hydroxyethyl)-1,3-oxazolidine;
(2) second step obtains the assorted-10-phospha-10-of target fire-retardant N-9,10-dihydro-9-oxy and is oxidized phenanthryl sec.-propyl-N, N-bis--(2-hydroxyethyl) amine;
Concrete reaction formula is as follows:
The first step:
Second step:
6. the flame retardant rigid urethane foam of structure-type according to claim 1, is characterized in that: described tertiary amine catalyst is the dipropylene glycol solution of triethylene diamine, and wherein the mass percentage of triethylene diamine is 33%.
7. the flame retardant rigid urethane foam of structure-type according to claim 1, is characterized in that: described whipping agent is pentamethylene or the pentamethylene aqueous solution.
8. the preparation method of the flame retardant rigid urethane foam of the structure-type described in any one of claim 1-7, is characterized in that comprising the following steps:
(1) by above-mentioned formula with magnitude relation, get each raw material and make white material;
(2) will expect in vain to mix by above-mentioned magnitude relation with structure-type fire retardant, obtain the mixture of white material and fire retardant;
(3) joined by above-mentioned magnitude relation in the mixture of white material and fire retardant by black material, mixing, is placed in mould and foams;
(4) will foam product completely, the demoulding of slaking after fixing, i.e. the obtained flame retardant rigid urethane foam of structure-type.
9. the preparation method of the flame retardant rigid urethane foam of structure-type according to claim 8, is characterized in that: in step (4), curing temperature is 50 ~ 60 DEG C, and the curing time is 1.5 ~ 2.5h.
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Cited By (3)
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| CN106496507A (en) * | 2016-10-27 | 2017-03-15 | 湖北科技学院 | A kind of phosphorus nitrogen cooperative flame retardant RPUF |
| CN112194683A (en) * | 2020-10-12 | 2021-01-08 | 福建师范大学 | Preparation of phosphorus-containing polyhydroxy flame retardant and application of phosphorus-containing polyhydroxy flame retardant in flame-retardant polylactic acid |
| CN113717515A (en) * | 2021-08-23 | 2021-11-30 | 安徽瑞琦塑胶科技有限公司 | Antistatic heat-insulating plastic pipe and preparation method thereof |
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| CN106496507A (en) * | 2016-10-27 | 2017-03-15 | 湖北科技学院 | A kind of phosphorus nitrogen cooperative flame retardant RPUF |
| CN112194683A (en) * | 2020-10-12 | 2021-01-08 | 福建师范大学 | Preparation of phosphorus-containing polyhydroxy flame retardant and application of phosphorus-containing polyhydroxy flame retardant in flame-retardant polylactic acid |
| CN112194683B (en) * | 2020-10-12 | 2022-06-17 | 福建师范大学 | Preparation of phosphorus-containing polyhydroxy flame retardant and application of phosphorus-containing polyhydroxy flame retardant in flame-retardant polylactic acid |
| CN113717515A (en) * | 2021-08-23 | 2021-11-30 | 安徽瑞琦塑胶科技有限公司 | Antistatic heat-insulating plastic pipe and preparation method thereof |
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