CN109485820A - A kind of low VOC polyurethane high resilience foam of low smell - Google Patents
A kind of low VOC polyurethane high resilience foam of low smell Download PDFInfo
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- 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
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
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- 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
- C08G18/28—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
- C08G18/61—Polysiloxanes
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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
- C08G18/65—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
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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
- C08G18/7607—Compounds of C08G18/7614 and of C08G18/7657
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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
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
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- 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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- C08G2101/00—Manufacture of cellular products
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Abstract
The present invention relates to foam technology fields, the low VOC polyurethane high resilience foam of specifically a kind of low smell, it is characterized in that, including glycol composition and isocyanates, the equivalent proportion of NCO content and OH content in glycol composition is 70~120: 100 in the isocyanates, and the glycol composition includes following components: polyalcohol, crosslinking agent, chain extender, catalyst, silicone oil, aldehydes scavenger, water, other auxiliary agents.The present invention is compared to the prior art, the PU foam prepared has the characteristics that low smell, low VOC, the increasingly harsh requirement of smell and VOC of the automobile main frame maker to PU material can be met, be widely used in automobile interior decoration, furniture item and to smell and the demanding occasion of VOC.
Description
Technical field
The present invention relates to foamed material and preparation method thereof technical field, the low poly- ammonia of VOC of specifically a kind of low smell
The high rebound foam of ester.
Background technique
Polyurethane (PU) flex foam have light, resilience is high, comfort is good, durable, sound insulation and absorbing compared with
The features such as high, is widely used in the application such as seat, backrest, headrest, handrail and sound insulation vibrating isolation system of automobile.With people
Increasingly raising to automotive quality and environmental requirement, the smell and volatile organic matter (VOC) in PU material are by increasingly
More concerns.National departments concerned in 2011 has formulated GB/T 27630-2011, and " Air Quality Evaluation refers in passenger car
South ", it is specified that benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, methacrylaldehyde (referred to as new eight in vehicle inner air
) etc. VOC concentration requirement.In order to meet vehicle smell and VOC emission requirement, major main engine plants have formulated respective one after another
Material standard, mono- cube of cabin law regulation of PV3942:2000 of such as public company material VOC limit value and PV3900 oder levels
Evaluation method；General TS-BD-003 sack method measures material VOC emission and the smell appraisal procedure of GMW 3025 etc..
Polyurethane material is generally by glycol composition and isocyanate composition in existence conditions such as catalyst, silicone oil
Under react, it is especially more difficult to control with aldehydes index in the eight point date of foam VOC.In order to improve PU material smell and VOC row
Standard is put, researcher does a lot of work.The numerous and confused examinations such as many polyether polyol supplier such as Dow, BASF, long China, ten thousand China
Figure reduces the aldehyde of polyethers itself, but effect is still unsatisfactory.Auxiliary agent producer such as Air Products, Evonik and
The companies such as Momentive are also constantly proposed their low volatilization catalyst and silicone oil, but since auxiliary dosage is not in formula
Height, though foam VOC has certain improvement, from reaching with a certain distance from automobile main frame maker requires still to have.
Therefore, there are also to be developed for the prior art.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of low VOC polyurethane of low smell
High rebound foam and preparation method thereof.Not only smell is low for the foamed material, but also also more common PU material is low by VOC
Much, the increasingly harsh requirement of smell and VOC of the automobile main frame maker to PU material can be met, be widely used in automobile interior decoration, family
Has product and to smell and the demanding occasion of VOC.
In order to achieve the above object, this invention takes following technical schemes:
The present invention provides a kind of low smell low VOC polyurethane high resilience foam, which is characterized in that
It is mixed by glycol composition and isocyanates；NCO content and glycol composition in the isocyanates
The equivalent proportion of middle OH content is 0.7~1.2；
The glycol composition includes that following weight percent raw material mixes: polyalcohol: 70~95wt%, is handed over
Join agent: 0.5~5wt%, chain extender: 0~3.0wt%, catalyst: 0.1~3.0wt%, silicone oil: 0.2~3.Owt%, aldehydes
Scavenger: 0.2~4.0wt%, water: 1.0~6.0wt%, other auxiliary agents: 0~6.0wt%；
The glycol composition preferably use one or more hydroxyl values for 15~80mg KOH/g, apparent degree of functionality 2~
8 polyalcohol, and/or as one or more hydroxyl values be 15~80mg KOH/g, apparent degree of functionality 2~8 polyalcohol made from
Polymer polyatomic alcohol；
The crosslinking agent is the small molecule polyol or polyamine that degree of functionality is greater than 2；Or by the small molecule polyol,
Polyamine makees initiator and hydroxyl value is greater than one of polyethers of 300mgKOH/g or a variety of；
The chain extender is the small molecule polyol that degree of functionality is 2；
The catalyst is the response type trimethylamine containing reactive hydrogen in low volatility tertiary amine catalyst or molecular structure
Catalyst；Although catalyst amount seldom, since tertiary amine typically contains very strong pungent smell, can seriously affect most
The smell and ammonia of terminal alveoli foam such as distribute at the indexs.Using low volatility tertiary amine catalyst due to its relatively high boiling point in the present invention
And smell and volatility are relatively low, response type catalyst was formed due to containing active hydrogen group in its structure in foam reactant
Cheng Zhongyu isocyanates reaction bonded has the characteristics that low volatilization, low smell into foaming structure.It is suitably such to urge
The non-sporadic catalyst of the NE such as NE300, NE1070 of agent such as Evonik company (former U.S.'s gas companies) series,
The EF series of products such as EF602, EF608, EF150, EF680 of Momentive company, ZR-50, DPA etc. of Huntsman company
Product and on the market one of similar product of other companies' sales or a variety of.
Further, the hydroxyl value is 15~80mg KOH/g, the polyalcohol of apparent degree of functionality 2~8 is containing primary hydroxyl
High-active multiple alcohol；The content of formaldehyde, acetaldehyde and methacrylaldehyde is respectively smaller than 3 μ g/g in the high-active multiple alcohol；The polymerization
The content of formaldehyde, acetaldehyde and methacrylaldehyde is respectively smaller than 5 μ g/g in object polyalcohol.Suitable such polyalcohol, polymer polyol
Alcohol, such as: GEP-330NY, GPOP-H45Y of middle petrochemical industry Shanghai Gaoqiao Petrochemical Company production, can Leah polyalcohol (Nanjing) it is limited
The FA 703 of company, KE 8102, KE 880S etc., F3135, POP 2140 of Yantai Wanhua etc., and other companies on the market
The similar product of sale.
The crosslinking agent includes monoethanolamine, diethanol amine, triethanolamine, glycerol, trimethylolpropane, pentaerythrite,
Diglycolamine, triethylene glycol amine, triisopropanolamine, ethylenediamine, NJ403 (Ningwu company, EDA polyethers, hydroxyl value 770mgKOH/g).
It is preferred that monoethanolamine, diethanol amine, triethanolamine, glycerol, trimethylolpropane.
The degree of functionality be 2 small molecule polyol include ethylene glycol, propylene glycol, 1,4-butanediol, 1,6- hexylene glycol,
Diglycol, diethylene glycol (DEG), triethylene glycol, dipropylene glycol, neopentyl glycol.It is preferred that propylene glycol, 1,4-butanediol, a contracting
Diethylene glycol.
The silicone oil uses low fogging, low sporadic silicone oil.Silicone oil is typically duplicate dimethyl siloxane chain
Section, ethylene oxide chain link, propylene oxide chain link.The a small amount of unreacted small molecule structure of remaining is easy in silicone oil preparation process
Unit.To guarantee final foamed product VOC emission requirement, silicone oil of the present invention is low fogging, low sporadic silicone oil, example
The B8726LF2 of such as Evonik company, B8715LF2, B8736LF2 LF2 series are low distributes silicone oil, Momentive company
L3635, L3636, L3639 etc. are low to distribute silicone oil, and one of low sporadic silicone oil that other companies sell on the market or
It is a variety of.
The aldehydes scavenger is aldehyde material generation or energy and aldehyde radical during capable of preventing or reducing polyurethane reaction
The aldehyde remover of reaction, such as: the AS102 of Ou Huanbao science and technology of oozing (Shanghai) Co., Ltd., AS103, AS104 AS aldehyde remover series
Product.
Other auxiliary agents appropriate can also be added as needed, other auxiliary agents include foamed open cell agent, antioxidant, light
Stabilizer, mill base or fire retardant.
The isocyanates is MDI, is modified one of MDI or TDI or a variety of；Overall NCO content in isocyanates
For 20.0wt%~35.0wt%；The modified MDI includes polyether-modified MDI, the modified MDI prepolymer of small molecule polyol, ammonia
Carbamate is modified one of MDI, Carbodiimide-Modified MDI, the imine modified MDI of phenodiazine cyclobutanone or a variety of.Such as ten thousand
Wannate series, the Mitsui chemistry Cosmonate series, Bayer company Desmodur series, BASF of magnificent chemical company
The products such as company Lupranate series, Huntsman company Suprasec series.It is different to reduce foam VOC and smell discharge
In cyanate preferred TDI content be lower than 30wt%, more preferably less than 10%.
Known method can be used in the preparation method of foam, such as the method that hand dropping or machine are poured, by isocyanates
The equivalent proportion (abbreviation isocyanate index) of NCO content and OH content in glycol composition is to pour after 0.7~1.2 hybrid reaction
Note is cured into 45-75 DEG C of mold and is made.
Compared with prior art, the present invention the PU foam prepared has the characteristics that low smell, low VOC, automobile can be met
The increasingly harsh requirement of smell and VOC of the main engine plants to PU material, is widely used in automobile interior decoration, furniture item and to smell
With the demanding occasion of VOC.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1-3
Table 1 is the formula of comparative example 1 and embodiment 1-3 product:
1 Example formulations of table
Raw material described in table are as follows:
GEP-330NY: polyether polyol with high activity, hydroxyl value 35mg KOH/g, degree of functionality 3, content of formaldehyde: 1.7 μ g/g,
Acetaldehyde: 2.1 μ g/g, level of acrolein: 0.8 μ g/g, middle petrochemical industry Shanghai Gaoqiao Petrochemical Company；
GPOP-H45Y: highly reactive polymer polyether polyol, hydroxyl value 21mg KOH/g, degree of functionality 3, content of formaldehyde: 2.3
μ g/g, acetaldehyde: 4.1 μ g/g, level of acrolein: N.D., middle petrochemical industry Shanghai Gaoqiao Petrochemical Company；
GEP-828: polyether polyol with high activity, hydroxyl value 28mg KOH/g, degree of functionality 3, content of formaldehyde: 4.2 μ g/g, second
Aldehyde: 5.8 μ g/g, level of acrolein: 4.4 μ g/g, middle petrochemical industry Shanghai Gaoqiao Petrochemical Company；
Diethanol amine: commercially available；
Triethanolamine: commercially available；
DC6080, B8734 LF2: low to distribute silicone oil, Evonik company；
NE300, NE1070: response type catalyst, Evonik company；
L3639: low to distribute silicone oil, Momentive company；
Niax C225, Niax A-33: common tertiary amine-type catalyst, Momentive company；
AS102, AS103, AS104: aldehydes scavenger, Ou Huanbao science and technology of oozing (Shanghai) Co., Ltd.；
TDI-80:Covestro company；
Wannate 8001: modified MDI, ten thousand Hua Huaxue；
Preparation step and process are as follows:
Each component in polyalcohol A material is stirred evenly in ratio in table 1, about 25 DEG C of material temperature of control A, B material, by table 1
A, B component are mixed and pour into mold (the 200mm x that temperature is 60 DEG C after stirring 8~10s rapidly by isocyanate index
200mm × 60mm) in molding curing 5min, after die sinking take out foam sample block juxtaposition cure at room temperature 3 days after it is to be measured.
Foam VOC is measured by general TS-BD-003 2000L sack method and (to avoid error, is tested each match quadrat sampling every time
Number of blocks is four), other testing standards and it the results are shown in Table 2.
2 VOC testing standard of table and result
Comparative example 1 is conventional formulation in table 2, and used high-active multiple alcohol GEP-828 aldehyde is higher, catalyst
For conventional tertiary amine catalyst, aldehydes scavenger is not used, thus final foam aldehyde is higher, smell is also larger, is more than big
The requirement of many 3.5 grades.The use of conventional catalyst also result in foam ammonia distribute test in PVC epidermis redden and production be not achieved
Product requirement.And embodiment 1 uses formula of the invention, not only smell reaches the requirement of 3.5 grades, and formaldehyde is reduced compared with comparative example 1
About 68%, ammonia distributes the requirement for also meeting masses' PV3937 standard.Embodiment 2 and 3 similarly achieves preferable effect.Its
The method that middle embodiment 2 is used in combination using AS102 and two aldehyde removers of AS103, formaldehyde removing rate are up to 84%, and third
Olefine aldehydr is not detected in sample test.Embodiment 3 uses full MDI system, and uses AS104 as aldehyde remover, and formaldehyde is clear
Except rate is also up to 82%, acetaldehyde and methacrylaldehyde also have different degrees of reduction.
From the foregoing, it will be observed that having the characteristics that low smell, low VOC according to the PU foam that the present invention prepares, automobile primary can be met
The increasingly harsh requirement of smell and VOC of the machine factory to PU material, be widely used in automobile interior decoration, furniture item and to smell with
The demanding occasion of VOC.
Claims (10)
1. a kind of low VOC polyurethane high resilience foam of low smell, which is characterized in that
It is mixed by glycol composition and isocyanates；NCO content and OH in glycol composition in the isocyanates
The equivalent proportion of content is 0.7~1.2；
The glycol composition includes that following weight percent raw material mixes: polyalcohol: 70~95wt%, crosslinking agent:
0.5~5wt%, chain extender: 0~3.0wt%, catalyst: 0.1~3.0wt%, silicone oil: 0.2~3.0wt%, aldehydes are removed
Agent: 0.2~4.0wt%, water: 1.0~6.0wt%, other auxiliary agents: 0~6.0wt%；
The glycol composition use one or more hydroxyl values for 15~80mg KOH/g, apparent degree of functionality 2~8 it is polynary
Alcohol, and/or as one or more hydroxyl values be 15~80mg KOH/g, apparent degree of functionality 2~8 polyalcohol made from polymer it is more
First alcohol；
The crosslinking agent is the small molecule polyol or polyamine that degree of functionality is greater than 2；Or by the small molecule polyol, polyamine
Make initiator and hydroxyl value is greater than one of polyethers of 300mgKOH/g or a variety of；
The chain extender is the small molecule polyol that degree of functionality is 2；
The catalyst is the response type trimethylamine catalysis in low volatility tertiary amine catalyst or molecular structure containing reactive hydrogen
Agent.
2. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that
The hydroxyl value is 15~80mg KOH/g, the polyalcohol of apparent degree of functionality 2~8 is the high-active multiple alcohol containing primary hydroxyl；
The content of formaldehyde, acetaldehyde and methacrylaldehyde is respectively smaller than 3 μ g/g in the high-active multiple alcohol；
The content of formaldehyde, acetaldehyde and methacrylaldehyde is respectively smaller than 5 μ g/g in the polymer polyatomic alcohol.
3. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that the crosslinking
Agent includes monoethanolamine, diethanol amine, triethanolamine, glycerol, trimethylolpropane, pentaerythrite, diglycolamine, triethylene glycol
Amine, triisopropanolamine, ethylenediamine.
4. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that the function
Degree for 2 small molecule polyol include ethylene glycol, it is propylene glycol, 1,4-butanediol, 1,6- hexylene glycol, diglycol, two sweet
Alcohol, triethylene glycol, dipropylene glycol, neopentyl glycol.
5. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that the silicone oil
Using low fogging, low sporadic silicone oil.
6. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that the aldehyde
Class scavenger generates for that can prevent or reduce aldehyde material during polyurethane reaction, or the substance that can be reacted with aldehyde radical, including
The AS aldehyde remover of Ou Huanbao science and technology of oozing (Shanghai) Co., Ltd..
7. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that described other
Auxiliary agent includes foamed open cell agent, antioxidant, light stabilizer, mill base or fire retardant.
8. a kind of low VOC polyurethane high resilience foam of low smell according to claim 1, which is characterized in that
The isocyanates is MDI, is modified one of MDI or TDI or a variety of；Overall NCO content is in isocyanates
20.0wt%~35.0wt%；
The modified MDI includes polyether-modified MDI, the modified MDI prepolymer of small molecule polyol, urethane-modified MDI, carbon
Change one of the modified MDI of diimine, the imine modified MDI of phenodiazine cyclobutanone or a variety of.
9. a kind of low VOC polyurethane high resilience foam of low smell according to claim 8, which is characterized in that the isocyanide
TDI content is lower than 30wt% in acid esters.
10. a kind of low VOC polyurethane high resilience foam of low smell according to claim 8, which is characterized in that the isocyanide
TDI content is lower than 10wt% in acid esters.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591052A (en) * | 2019-09-09 | 2019-12-20 | 优麦化学(山东)有限公司 | Low-odor isocyanate mixture, preparation method and application |
| CN110885417A (en) * | 2019-11-22 | 2020-03-17 | 山东蓝星东大有限公司 | Compression-resistant low-density TDI (toluene diisocynate) type high-resilience foam sponge and preparation method thereof |
| CN110951081A (en) * | 2019-11-08 | 2020-04-03 | 东华大学 | Non-volatile multifunctional POSS-based tertiary amine catalyst and preparation and application thereof |
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| CN110591052A (en) * | 2019-09-09 | 2019-12-20 | 优麦化学(山东)有限公司 | Low-odor isocyanate mixture, preparation method and application |
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| CN110964173A (en) * | 2019-12-13 | 2020-04-07 | 万华化学（北京）有限公司 | Polyurethane composition for honeycomb composite material, preparation method of polyurethane composition, polyurethane foam and application of polyurethane foam |
| CN112552476A (en) * | 2020-12-07 | 2021-03-26 | 上海宏璞化工科技有限公司 | Polyurethane foam material and preparation method thereof |
| CN115725048A (en) * | 2021-08-31 | 2023-03-03 | 常州正友海绵科技有限公司 | High-resilience polyurethane flexible foam material and preparation method thereof |
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