CN106800633A - High fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 and preparation method thereof - Google Patents
High fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 and preparation method thereof Download PDFInfo
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- CN106800633A CN106800633A CN201710027812.9A CN201710027812A CN106800633A CN 106800633 A CN106800633 A CN 106800633A CN 201710027812 A CN201710027812 A CN 201710027812A CN 106800633 A CN106800633 A CN 106800633A
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- 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
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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- 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
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- 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
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- C08K3/02—Elements
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- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C08K5/00—Use of organic ingredients
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- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
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- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
- C08J2203/184—Binary blends of expanding agents of chemical foaming agent and physical blowing agent, e.g. azodicarbonamide and fluorocarbon
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
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- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
High fire-retardance sealing agent of single component polyurethane foam the invention discloses oxygen index (OI) >=32 and preparation method thereof, it is characterized in that, including reactive flame retardant, liquid additive flame retardant, solid additive flame retardant, the reactive flame retardant is reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol containing ignition-proof element, and the solid additive flame retardant contains expansible graphite；By selecting three kinds of suitable fire retardants and optimizing the ratio of three, using routine, it is easy to get, the third cheap butane, diformazan ether mixture environment-friendly foaming agent, obtains with preferable physical property and performance, the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32.The product oxygen index (OI) is high, and smoke density is low, flame propagation is small, good flame retardation effect, it is adaptable to have the fields such as the building and the vehicles of high fire-retardance requirement to use.
Description
Technical field
The present invention relates to sealing agent of single component polyurethane foam field, and in particular to the high fire-retardance one pack system of oxygen index (OI) >=32
Cranny filler of polyurethane foam and preparation method thereof.
Background technology
In recent years, the requirement more and more higher with building and the vehicles to the fire resistance of its material therefor and political affairs
Plan regulation it is increasingly strict, the fire resistance of material therefor is faced with huge challenge.
Sealing agent of single component polyurethane foam is the special polyurethane foam products being loaded in aerosol pressure cans, extensively
General joint filling, sealing, heat-insulated, bonding, sound insulation for being applied to building and the vehicles etc., is a kind of excellent performance, easy to use,
The new material of environmental protection and energy saving.But common non-flame resistant (so-called B3 grades) sealing agent of single component polyurethane foam oxygen index (OI) (oxygen
Index is to weigh the index that material lights difficulty or ease, and value is bigger, and anti-flammability is better) only 18 or so, belong to combustible material；General resistance
Combustion type (so-called B2 grades) cranny filler of polyurethane foam oxygen index (OI) is also only capable of reaching 26, falls within combustible material；Even if in the market has
A small amount of so-called " fire retardant " (so-called B1 grades, DIN4102B1 standards) product both at home and abroad, oxygen index (OI) does not reach 32 (it is generally acknowledged that oxygen
Index ＞ 32 is nonflammable material), it is impossible to meet the harsh flame-retardancy requirements of some niche markets.Therefore, some special dimensions of market
There is urgent demand to the product with high fire-retardance effect.
Flame retardant type sealing agent of single component polyurethane foam is by realizing hindering to suitable flame retardants are added in formula system
Combustion purpose, patent CN103923294 by add the elements such as chloride, bromine, phosphorus, nitrogen reaction-type flame-retarding polyethers or (and) it is fire-retardant
The foaming agent (F12) of PEPA, liquid additive flame retardant and non-combustible type is filled out preparing fire-retardant one-component polyurethane foam
Seam agent, its optimization formula oxygen index (OI) is also only capable of reaching 29.5 (actual measurement is 27.4), and also uses the foaming agent of non-environmental protection
F12.And patent WO2010058036 is provided without reaction-type flame-retarding polyethers or flame retardant polyester polyalcohol, only adds general liquid and add
Plus type fire retardant TCPP and solid additive flame retardant expansible graphite, fire resistance is also only capable of reaching B2 grades, and (DIN4102B2 is marked
It is accurate), oxygen index (OI) index is not mentioned in this text (actual measurement is 25.2).Fire-retardant mono-component polyurethane bubble obtained in above-mentioned two patent
Foam gap filler flame retardant effect is poor.Oxygen index (OI) can reach 30 fire-retardant sealing agent of single component polyurethane foam almost in the market
No, therefore let alone the high fire-retardance product of this fire retardant rank in oxygen index (OI) >=32.Existing fire-retardant mono-component polyurethane bubble
The expensive foaming agent (such as 134a) that what foam gap filler had also use non-environmental protection foaming agent (such as F12) or will be on the verge of being replaced,
Environmental requirement today strict all the more, using routine, it is easy to get, cheap environment-friendly foaming agent is obtained the high fire-retardance list of oxygen index (OI) >=32
Part polyurethane foam gap filler more in the urgent need to.
The content of the invention
The technical problems to be solved by the invention are the oxygen of existing common flame retardant type sealing agent of single component polyurethane foam
Index is relatively low, is unfavorable for being used in fire resistance requirement field higher, it is therefore intended that provide the high fire-retardance list of oxygen index (OI) high
Part polyurethane foam gap filler and preparation method thereof, makes the oxygen index (OI) of obtained high fire-retardance sealing agent of single component polyurethane foam
>=32, make it that not only there is high fire-retardance effect, and products obtained therefrom also has preferable physical property and performance.
The present invention is achieved through the following technical solutions：
The high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, including reactive flame retardant, liquid addition type
Fire retardant, solid additive flame retardant, the reactive flame retardant include the reaction-type flame-retarding polyethers containing ignition-proof element or/and
Flame retardant polyester polyalcohol, the solid additive flame retardant contains expansible graphite.
Specifically, in reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, the ignition-proof element such as phosphorous, chlorine, bromine.Phosphorus unit
Element mainly plays a role in condensed phase, and phosphide can consume the fuel gas decomposited during burning and convert it into not in burning
Incendive carbide, belongs to catalysis carbon-forming fire retardant mechanism；Halogen (chlorine, bromine) then mainly plays a role in the gas phase, in burning
Shi Shengcheng hydrogen halides and suppress combustion reaction, be the chain terminating agent of combustion reaction.
Liquid additive flame retardant is generally phosphorous, the micromolecular compound of chlorine, bromine, such as (halo) phosphorus (phosphine) esters of gallic acid.
This kind of liquid flame retardant fire retardant mechanism is identical with the reactive flame retardant fire retardant mechanism of above-mentioned phosphorous, chlorine, bromine.
Expansible graphite is fire-retardant by solid matter generation inflammable substance by delaying or interrupting.Expansible graphite
It is heated to a certain extent, expansion will be started, the graphite after expansion becomes the very low vermiform of density by original flakey, from
And form good heat insulation layer.Graphite flake after expansion is both the charcoal source of intumescent system, is again heat insulation layer, can be effectively heat-insulated,
Delay and terminate the decomposition of polymer；Meanwhile, largely absorbed heat in expansion process, can effectively reduce system temperature；And it is expanded
Acid ion in journey in release jacket coating, can promote dehydration carbonization, can further increase anti-flammability.
Further, usual oxygen index (OI) >=32 are nonflammable material, and existing single-component cranny filler of polyurethane foam is several
Without oxygen index (OI) >=32.According to the fire retardant mechanism of above-mentioned fire retardant, cannot all be obtained using any one or two kinds of fire retardants
To oxygen index (OI) >=32, while the high fire-retardance one-component polyurethane foam joint filling with preferable physical property and performance
Degree of functionality is that 2-3, hydroxyl value are the reaction-type flame-retarding polyethers of 50-400 or/and flame retardant polyester polyalcohol, suitable by agent, the present invention
Liquid flame retardant, expansion multiplying power are 20-400 times of expansible graphite three collective effect in one-component polyurethane foam system
In, and by optimizing triangular proper ratio so as to obtain a kind of oxygen index (OI) >=32, while having preferable physical property
And the high fire-retardance sealing agent of single component polyurethane foam of performance, it is had in the environment high to fire resistance requirement
The application of effect.
Further, the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, reactive flame retardant, liquid add
Plus the ratio of weight and number of type fire retardant, solid additive flame retardant is 1:0.70~0.95:0.8~1.3.
The ignition-proof elements such as phosphorus, chlorine, bromine wherein, in reactive flame retardant, can react with polyisocyanates and be attached to poly-
In urethane molecular structure, make polyurethane molecular that there is flame-retardant composition in itself.Reactive flame retardant influences small to foaming properties, fire-retardant
Persistently and effect is good, therefore will not be separated out during long-term use and reduce fire resistance.This kind of reactive flame retardant synthesis
It is more complicated, it is relatively costly compared to additive flame retardant.If being excessively used, in addition to cost increases, the fragility of foam can also become
Greatly, adhesiveness increase, shortened shelf life, and then the use of high fire-retardance single-component cranny filler of polyurethane foam can be influenceed.
The production of liquid additive flame retardant is ripe, price is relatively low, viscosity is small, and with other materials compatibilities in formula
It is good；There is preferable manufacturability in production and in, but if dosage is excessive, then can have a strong impact on the physical property of foam, such as
Intensity decreases, dimensional stability are deteriorated, caking property reduction, and as time went on, the increase of its animal migration can make foam on the contrary
Anti-flammability is deteriorated.
Expansible graphite has nontoxic, is heated and does not generate toxic gas, and cigarette it is few, without dripping off with non-migratory phenomenon, its
Source is sufficient, manufacturing process is simple, low cost, is a class novel environment friendly high-efficiency fire retardant.But expansible graphite is solid as one kind
Body fire retardant, addition has restriction in system, because the increase with expansible graphite addition can be significantly greatly increased body
It is viscosity, system mobility is deteriorated, the normal of influence product is used.
Therefore, combined reaction type flame retarding polyether or/and flame retardant polyester polyalcohol, liquid additive flame retardant, inflatable stone
The performance of black three, it is 1 to obtain its ratio of weight and number according to experiment:0.70~0.95:When in 0.8~1.3, the one pack system for obtaining
Oxygen index (OI) >=32 of cranny filler of polyurethane foam, while having preferable physical property and performance, its high flame retardant
Make high fire-retardance sealing agent of single component polyurethane foam obtained in the present invention more safe and reliable when in use.
Preferably, the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, reactive flame retardant, liquid addition
Type fire retardant, the ratio of weight and number of solid additive flame retardant are 1：0.8~0.9：0.95~1.2, the reactive flame retardant,
Liquid additive flame retardant, the ratio of weight and number of solid additive flame retardant are 1:0.85:1.1.
Preferably, the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, when this gap filler is prepared, may be used also
Use conventional polyether or/and PEPA.Conventional polyether or/and PEPA have in inventive formulation adjustment some things
The effect of the auxiliary such as property and processing performance, can not in particular cases use at some.
Specifically, the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, the gap filler include polyethers or/
And PEPA, foam stabiliser, catalyst, polyisocyanates, foaming agent, the polyethers or/and PEPA are normal
Rule polyethers or/and PEPA；Foam stabiliser is the organic silicon surfactant for conventional polyurethanes foam gap filler,
The catalyst is N,N-Dibenzylamine, and the polyisocyanates is many phenylmethane polyisocyanates, and the foaming agent is
The mixture of the third butane and dimethyl ether.
Can also according to circumstances add or be not added with pigment.
Wherein, foaming agent is the mixture containing the third butane and dimethyl ether, and the third butane and dimethyl ether parts by weight
Than being 1:0.4~1, the third butane and dimethyl ether are that (ODP=0, GWP=0 use GWP to readily available and inexpensive green-blowing agent
(global warming potential) come measure they to global warming effect size, material for the size of depletion of the ozone layer ability be with
ODP (atmospheric ozone layer loss latent energy value) is come what is weighed)；Also, foaming agent of the invention is relative inflammable blowing agent, but finally
It is not available for existing fire-retardant sealing agent of single component polyurethane foam that oxygen index (OI) >=32 can be reached.
Preferably, the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, the solid additive flame retardant
Also include the one kind or many in ammonium polyphosphate or aluminium hydroxide or antimony oxide or Firebrake ZB or melamine salt or red phosphorus
Kind.Sometimes for the flame-retarding characteristic (such as combustion product intensity, smoke density, smoke toxicity etc.) and some other performances that improve foam,
Expansible graphite also can be with other solid additive flame retardants (such as melamine salt, ammonium polyphosphate, Firebrake ZB, aluminium hydroxide
Deng) compound use.
A kind of preparation method of the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, comprises the following steps：
A. by reactive flame retardant, polyethers or/and PEPA, liquid additive flame retardant, foam stabiliser, catalysis
Agent is mixed and stirred for uniformly, combined polyether being obtained in proportion；Wherein the weight of reactive flame retardant is the 30- of combined polyether
50%, the weight of polyethers or/and PEPA is the 0-20% of combined polyether, and the weight of liquid additive flame retardant is combination
The 25-45% of polyethers, the weight of foam stabiliser is the 2-5% of combined polyether, and the weight of catalyst is the 0.8- of combined polyether
1.5%.
B. combined polyether, solid additive flame retardant, polyisocyanates are proportionally added into inhalator jar；Solid addition type
The weight of fire retardant is the 20-50% of combined polyether, and the weight of polyisocyanates is the 100%-150% of combined polyether.
C. the valve of inhalator jar is sealed up, foaming agent is poured, finished product is obtained at normal temperatures after being well mixed.
The preparation method of the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, foaming agent in the step C
Weight for combined polyether 20%~80%.
The preparation method of the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, foaming agent in the step C
Weight for combined polyether 54%.
Sealing agent of single component polyurethane foam contains isocyanate prepolymer, foam stabiliser, fire retardant, catalyst, hair
Infusion etc., after content sprays from special valve when using, is drastically expanded due to the vaporization of foaming agent, is formed substantial amounts of low
Density foam, solidifies along with the water reaction generation carbon dioxide in performed polymer largely in residual-NCO and air or matrix.
Compared with bi-component hard polyurethane foams, the density of sealing agent of single component polyurethane foam it is smaller (it is general≤
30kg/m3)；Rate of closed hole is relatively low (≤80%), and fire retardant range of choice is small (to be had because the requirement of one pack system specific packaged forms is caused
A little fire retardants will influence shelf life of products and mobility), based on high fire-retardance sealing agent of single component polyurethane foam of the invention also
Inflammable blowing agent (butane of dimethyl ether third) is used as foaming agent, therefore have been accomplished and flame retardant bicomponent hard polyurethane foams
Identical fire-retardant rank relative difficulty, will accomplish that high fire-retardance rank (fire retardant) is extremely difficult if oxygen index (OI) >=32.The present invention is adopted
The high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 is obtained with above-mentioned technical proposal.
The present invention compared with prior art, has the following advantages and advantages：
1st, high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 of the present invention and preparation method thereof, application method
It is essentially identical with conventional sealing agent of single component polyurethane foam, and the high fire-retardance effect with oxygen index (OI) >=32, while its cigarette
Density is low, flame propagation is small, it is adaptable to have the fields such as the building and the vehicles of high fire-retardance requirement to use；
2nd, high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 of the present invention and preparation method thereof, is used
Foaming agent is the mixture of the third butane and dimethyl ether.The ODP and GWP of this foaming agent are zero, be it is a kind of very environmentally friendly, cheaply again
Readily available foaming agent；
3rd, high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 of the present invention and preparation method thereof, by list
Reactive flame retardant, liquid additive flame retardant, solid additive flame retardant are added in part polyurethane foam system, three presses
Aforementioned proportion is presented " cooperative effect ", makes oxygen index (OI) >=32 of obtained high fire-retardance sealing agent of single component polyurethane foam, and shows
The oxygen index (OI) of the fire-retardant sealing agent of single component polyurethane foam having almost not more than 30, therefore this gap filler more meet as
Modern fire-retardant regulation strict all the more, can effectively apply in the place required with high fire-retardance.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment, the present invention is made
Further to describe in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this
The restriction of invention.
Embodiment 1
High fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 of the present invention and preparation method thereof, matches somebody with somebody by table 11
Side, by 40g reactivity flame retardant polyester polyalcohol RB79,20g polyethers 310,36g liquid flame retardants TCPP, 3g foam stabiliser
B8871,1g catalyst DMDEE are well mixed, and 100g combined polyethers are obtained.Again by 100g combined polyethers, 40g expansible graphites,
125g polyisocyanates M20S is added in inhalator jar, seals up valve, and 24g dimethyl ether, the butane of 30g third, shaking mixing 5 are poured successively
Minute, to be placed 24 hours under normal temperature, then gluing, solidification measures product oxygen index (OI) after 24 hours be 32.2.
Contain reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant, solid in the present embodiment
Additive flame retardant, wherein solid additive flame retardant are expansible graphite, are also added with conventional polyether or/and polyester polyols
Alcohol, i.e. 20g polyethers, and the third butane and the ratio of dimethyl ether are 1 in foaming agent:In 0.8, therefore span of the invention,
Reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant, solid additive flame retardant are added, finally
Oxygen index (OI) >=32 of the mono-component polyurethane gap filler for obtaining, with good flame retardant effect.
Embodiment 2
By 9 formula in table 1, by 60g reactivity flame retardant polyester RB79,36g liquid flame retardant DMMP, 3g foam stabilisers
B8871,1g catalyst DMDEE are well mixed, and 100g combined polyethers are obtained.Again by 100g combined polyethers, 125g polyisocyanates
M20S is added in inhalator jar, seals up valve, and 24g dimethyl ether, the butane of 30g third, shaking mixing 5 minutes, normal temperature decentralization are poured successively
Put 24 hours, then gluing, solidification measures product oxygen index (OI) after 24 hours be 28.2.Do not contained in this formula expansible graphite or
Its mixture, only reactive flame retardant, liquid additive flame retardant.
Be can be seen that from formula 9, only addition reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant
Two kinds of fire retardants of agent, below 32, its effect is than the three kinds of effects of fire retardant of addition in embodiment 1 for its final oxygen index (OI)
Difference.
Embodiment 3
By 10 formulas in table 1, without flame-proof polyol, only containing liquid additive flame retardant and contain inflatable stone
The solid additive flame retardant of ink or its mixture, its final oxygen index (OI) is below 32.
Embodiment 4
By 11 formulas in table 1, (to meet processing performance requirement, non-resistance is with the addition of without liquid additive flame retardant
The liquid plasticizer DOP of combustion is compared), only contain RB79 reaction-type flame-retardings PEPA and expansible graphite solid addition type
Two kinds of fire retardants of fire retardant, its oxygen index (OI) is below 32, and physical property and performance are poor.
Embodiment 5
It is the reaction of the reaction-type flame-retarding polyethers containing ignition-proof element or/and flame retardant polyester polyalcohol by 6 formula in table 1
Type fire retardant, liquid additive flame retardant, the ratio of the solid additive flame retardant containing expansible graphite or graphite mixture are
1:1.5:1.65, although flame retardant effect is slightly good, but oxygen index (OI) does not reach 32 yet, and physical property and performance are poor.
Embodiment 6
It is the reaction of the reaction-type flame-retarding polyethers containing ignition-proof element or/and flame retardant polyester polyalcohol by 7 formula in table 1
Type fire retardant, liquid additive flame retardant, the ratio of the solid additive flame retardant containing expansible graphite or graphite mixture are
1:0.5:1, it is identical with formula 7, although flame retardant effect is slightly good, but oxygen index (OI) does not reach 32, and physical property and usability yet
Can be poor.
Embodiment 7
It is the reaction of the reaction-type flame-retarding polyethers containing ignition-proof element or/and flame retardant polyester polyalcohol by 8 formula in table 1
Type fire retardant, liquid additive flame retardant, the ratio of the solid additive flame retardant containing expansible graphite or graphite mixture are
1:0.9:0.4, flame retardant effect is poor, and oxygen index (OI) does not reach 32 yet, and physical property and performance are also poor.
Embodiment 8
According to reaction-type flame-retarding polyethers in patent CN103923294 or/and flame retardant polyester polyalcohol and liquid additive flame
Fire the ratio of agent, and liquid additive flame retardant and the solid additive flame containing expansible graphite in patent WO2010058036
The ratio of agent is fired, reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant is obtained, containing inflatable
The ratio of the solid additive flame retardant of graphite is 1:0.95:0.4, prepare one-component polyurethane foam joint filling according to aforementioned proportion
Agent (uses the third butane diformazan ether mixture foaming agent), and its oxygen index (OI) is 29.6, and below 32, flame retardant effect is poor.
According to the parts by weight of reactive flame retardant, liquid additive flame retardant, solid additive flame retardant in the present invention
Formula 1-5 in the value range of ratio, such as table 1, its oxygen index (OI) >=32.
Therefore, when reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant, containing inflatable
The ratio of weight and number of the solid additive flame retardant of graphite is 1:0.70~0.95:When in the range of 0.8~1.3, it has higher
Anti-flammability, and according to the ratio of three in existing patent, its oxygen index (OI) can not reach 32, therefore, the present invention passes through three kinds
Fire retardant mutually acts synergistically in aforementioned proportion scope, can reach oxygen index (OI) >=32, and with preferable physical property and
Performance.
In sum, can be obtained from table 1, the component ratio in formula 1-5 is in composition and proportion of the invention
It is interior, containing composition of the invention and reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant,
Three kinds of fire retardants of solid additive flame retardant containing expansible graphite, its oxygen index (OI) >=32, therefore with preferably it is fire-retardant
Property；And only it is being reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant containing ignition-proof element
When agent, the solid additive flame retardant three containing expansible graphite or graphite mixture act synergistically, can just make single group segregation
Oxygen index (OI) >=32 of urethane foam gap filler；And only reactive flame retardant, liquid additive flame retardant, solid additive flame
The ratio of weight and number for firing agent is 1:0.70~0.95:In the range of 0.8~1.3, three could act synergistically and reach oxygen index (OI) >=32
Effect；And the high fire-retardance sealing agent of single component polyurethane foam obtained by ratio value of the present invention has preferable
Physical property and performance, practicality are higher.
Therefore work as reaction-type flame-retarding polyethers or/and flame retardant polyester polyalcohol, liquid additive flame retardant, contain inflatable stone
Three kinds of fire retardant ratios of weight and number of solid additive flame retardant of ink are 1:0.70~0.95:Ratio in the range of 0.8~1.3
Not only anti-flammability reaches existing sealing agent of single component polyurethane foam institute to sealing agent of single component polyurethane foam prepared by example
Inaccessiable effect, i.e. oxygen index (OI) >=32.Physical property of the invention and performance also preferably, can be effectively met to fire-retardant
Property has the demand of the special dimension of high request.
The embodiment of the present invention formula of table 1 and oxygen index value
| Raw material | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| RB79 | 40 | 20 | 40 | 60 | 60 | ||||||
| M125 | 50 | 40 | 20 | 30 | 50 | 50 | |||||
| JQN-310 | 20 | 10 | 10 | 20 | 21 | 60 | |||||
| JQN-210 | 21 | 1 | |||||||||
| PS-2352 | 10 | 20 | |||||||||
| TEP | 18.5 | 18.6 | 45 | 25 | 45 | ||||||
| TCPP | 36 | 18.5 | 18 | 36 | |||||||
| DMMP | 18.6 | 18 | 37 | 36 | |||||||
| DOP | 36 | ||||||||||
| B8871 | 3 | 2 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 3 |
| DMDEE | 1 | 1 | 0.8 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| EG | 40 | 40 | 50 | 40 | 40 | 50 | 50 | 20 | 40 | 50 | |
| Firebrake ZB | 8 | ||||||||||
| M20S | 125 | 135 | 125 | 130 | 120 | 108 | 140 | 112 | 125 | 125 | 125 |
| Dimethyl ether | 24 | 22 | 26 | 24 | 24 | 24 | 26 | 24 | 24 | 24 | 24 |
| Third butane | 30 | 28 | 32 | 30 | 30 | 30 | 32 | 30 | 30 | 30 | 30 |
| Oxygen index (OI) | 32.2 | 32.2 | 32.4 | 32.4 | 32.8 | 31.2 | 31.6 | 27.8 | 28.2 | 28.6 | 30.8 |
Wherein, RB79 is the reaction-type flame-retarding PEPA of Ya Bao Chemical Co., Ltd.s production；M125 is Su Wei chemistry
The reaction-type flame-retarding PPG that Co., Ltd is produced；JQN-310, JQN-210 are that Nanjing gold is dwelt the polyethers of Chemical Manufacture,
The polyester of PS-2352 Nanjing Nanjing Si Taipan Chemical Co., Ltd.s production；TEP is triethyl phosphate, TCPP is three (2- chlorine third
Base) phosphate, DMMP be dimethyl methyl phosphonate, DOP be dioctyl phthalate liquid plasticizer, TEP, TCPP and DMMP
All it is commercially available conventional common liq fire retardant；DOP is common plasticizers.B8871 is the organosilyl surface of Ying Chuan companies production
Activating agent, i.e. foam stabiliser；The N,N-Dibenzylamine catalyst that DMDEE is produced by Beijing oiling；EG is inflatable stone
Ink, Firebrake ZB is other solid flame retardants；M20S is the polyisocyanates of BASF AG's production, i.e., many many isocyanides of phenylmethane
Acid esters (PAPI, polymeric MDI)；Third butane, dimethyl ether is propellant (foaming agent) used by common aerosol.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (9)
1. the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32, it is characterised in that including reactive flame retardant, liquid
Body additive flame retardant, solid additive flame retardant, the reactive flame retardant are that the reaction-type flame-retarding containing ignition-proof element is more
First alcohol, the solid additive flame retardant contains expansible graphite.
2. the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claim 1, it is characterised in that
Reactive flame retardant, liquid additive flame retardant, the ratio of weight and number of solid additive flame retardant are 1:0.70~0.95:0.8
~1.3.
3. the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claim 1, it is characterised in that
Reactive flame retardant, liquid additive flame retardant, the ratio of weight and number of solid additive flame retardant are 1：0.8~0.9：0.95~
1.2, the reactive flame retardant, liquid additive flame retardant, the ratio of weight and number of solid additive flame retardant are 1:0.85:
1.1。
4. the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claims 1 to 3, its feature exists
In, the gap filler also include polyethers or (and) polyester, foam stabiliser, catalyst, many phenylmethane polyisocyanates, foaming
Agent.
5. the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claim 4, it is characterised in that
The foaming agent is the mixture of the third butane and dimethyl ether, and the third butane and the ratio of weight and number of dimethyl ether are 1:0.4~1.
6. the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claim 1, it is characterised in that
The solid additive flame retardant also includes ammonium polyphosphate or aluminium hydroxide or antimony oxide or Firebrake ZB or melamine
One or more in salt or red phosphorus.
7. the high fire-retardance sealing agent of single component polyurethane foam of a kind of oxygen index (OI) >=32 as described in claim any one of 1-6
Preparation method, it is characterised in that comprise the following steps：
A. by reactive flame retardant, polyethers or (and) polyester, liquid additive flame retardant, foam stabiliser, catalyst by proportion
It is mixed and stirred for uniform, prepared combined polyether；
B. combined polyether, solid additive flame retardant, many phenylmethane polyisocyanates are proportionally added into inhalator jar；
C. aerosol tank valve is sealed up, foaming agent is poured, finished product is obtained at normal temperatures after being well mixed.
8. the preparation method of the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claim 7,
Characterized in that, the weight of foaming agent is the 20%~80% of combined polyether in the step C.
9. the preparation method of the high fire-retardance sealing agent of single component polyurethane foam of oxygen index (OI) >=32 according to claim 8,
Characterized in that, the weight of foaming agent is the 54% of combined polyether in the step C.
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| CN110204676A (en) * | 2019-05-31 | 2019-09-06 | 李学友 | It is a kind of for packing the foamed material and preparation method thereof of filling |
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