CN110317566A - A kind of polysulfide sealant and preparation method thereof - Google Patents
A kind of polysulfide sealant and preparation method thereof Download PDFInfo
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- CN110317566A CN110317566A CN201910630693.5A CN201910630693A CN110317566A CN 110317566 A CN110317566 A CN 110317566A CN 201910630693 A CN201910630693 A CN 201910630693A CN 110317566 A CN110317566 A CN 110317566A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J181/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Adhesives based on polysulfones; Adhesives based on derivatives of such polymers
- C09J181/04—Polysulfides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of two-component polysulfide sealant and its applications, including the component A containing liquid polysulfide rubber and blocked isocyanate, B component containing manganese dioxide and polyamine, A, it will form the paste glue for application after B component mixing, blocked isocyanate passes through formula 1) compound react obtained with isocyanates, and the molar ratio of polyamine and blocked isocyanate is 1: 0.9-1.1；A, it in trickling liquid when initial after being mixed under B component room temperature, and mix and starts extremely to form the time interval between the paste glue not trickled at least 3 minutes；Using: at the construction field (site) by A, B component, it is mixed to get mixed system in a stirring kettle, after certain time interval, becomes paste from liquid；The paste glue of aforementioned preparation is applied to building splice seam sealing；The present invention is able to achieve using convention stir device and is stirred evenly, and is avoided the problem that being not easy in the prior art or can not be mixed, and the mechanical property etc. for promoting glue is conducive to.
Description
Technical field
The invention belongs to the field of building materials more particularly to building splice seam sealing, including concrete splicing seams, highway and
The sealing at railroad bridge expansion joint, terrace cutting seam, and in particular to a kind of two-component polysulfide sealant and its application.
Background technique
Polysulfide sealant refers to that by liquid polysulfide rubber be basis material, and incorporation promoter material obtains can be at room temperature
The elastic packing for having good bonding power to metal or other materials surface is become by chemical crosslinking under the conditions of either heating
Material.Since polysulfide sealant has good fuel resistance energy, water resistance and weather resistance, it has been widely used in mixing
The sealing of solidifying soil splicing seams and cutting seam.
One of the performance for wherein splicing sealant needs to have more excellent sag resistance energy.Common practice is at present
Anti-sag agent (also referred to as thixotropic agent) Lai Shixian is directly added in the feed, and common anti-sag agent has fumed silica, nanometer
Calcium carbonate and resin with polyurea structure, however to there is generation environment when being added dirty for fumed silica and nanometer calcium carbonate
Dye, while can not be uniformly mixed after being directly added into using conventional mixing equipment, need expensive planet stirring device to be mixed,
Material loss is bigger in production process, and have thixotropic paste glue construct at the scene ingredient when, thixotropy feature
In the presence of causing common electric mixer to be difficult to accomplish to be uniformly mixed.Certain polyureas anti-sag agent, such as CN106590376B
Disclosed hyperbranched poly ureas anti-sag agent improves production efficiency although the problem of can solve workshop pollution, same
The problem of sample, at the construction field (site), it is impossible to be sufficiently mixed the material of two thixotroping components, and then uniform due to cannot achieve
Mixing will necessarily adversely affect in mechanical property to structure glue and service life.
Summary of the invention
The technical problem to be solved by the present invention is to overcome deficiency in the prior art, one kind is provided and is suitable for site operation simultaneously
Uniformly mixed two-component polysulfide sealant is able to achieve using convention stir device.
The present invention additionally provides the application method of above-mentioned two-component polysulfide sealant simultaneously.
In order to solve the above technical problems, a kind of technical solution that the present invention takes is as follows:
A kind of two-component polysulfide sealant, including component A and B component, the component A include liquid polysulfide rubber, the B
Component includes manganese dioxide, is will form after the component A is mixed with B component for splicing the paste glue of sealing, the A group
Dividing also includes blocked isocyanate, and the blocked isocyanate, which is reacted by formula (1) compound with isocyanates, to be made；
Wherein, R1、R2Separately selected from alkyl, oxyl, hydrocarbon sulfydryl, alkyl carbonyl,
Hydrocarbyloxycarbonyl, alkyl sulfinyl, naphthenic base, cycloalkyloxy, cycloalkanes sulfydryl, carbonyl naphthene, Heterocyclylalkyl, heterocycle alcoxyl
Base, heterocycle alkane sulfydryl, heterocycloalkylcarbonyl, aryl, aryloxy group, aryloxy group alkyl, aromatic thiohydroxy, aryl carbonyl, alkyl sulfuryl, ring
Alkane sulfuryl or fragrant sulfuryl；
The B component also includes polyamine, and the molar ratio of the polyamine and the blocked isocyanate is 1:
0.9-1.1；
In trickling liquid when initial after being mixed under the component A and the B component room temperature, certainly by the component A and the B
The paste glue for splicing sealing that component mixing starts not trickle to formation (has thixotropic for splicing sealing use
Paste body shape glue) between, there is at least time interval of 3min.
In the present invention, " room temperature " is also general temperature or room temperature, generally 25 ± 10 DEG C." trickling liquid " has stream
The liquid of performance is dropped down, there is preferable self-leveling.
It is " initial in " being in trickling liquid when initial after being mixed under the component A and the B component room temperature " in the present invention
When " it is the timing node that the component A of conventional meaning understanding has just been mixed with B component.
Some preferred aspects according to the present invention, the R1、R2The carbon number contained is respectively 1-20；It is highly preferred that described
R1、R2The carbon number contained is respectively 1-10.
More according to the present invention preferred and specific aspect, the R1、R2Separately it is selected from C1-6Alkyl, C1-6
Oxyl, C1-6Hydrocarbon sulfydryl, C1-6Alkyl carbonyl, C1-6Hydrocarbyloxycarbonyl, C1-6Alkyl sulfinyl, C3-6Naphthenic base, C3-6Ring
Alkoxy, C3-6Cycloalkanes sulfydryl, C3-6Carbonyl naphthene, C4-8Heterocyclylalkyl, C4-8Heterocyclylalkoxy groups, C4-8Heterocycle alkane sulfydryl, C4-8It is miscellaneous
Naphthene base carbonyl, C5-10Aryl, C5-10Aryloxy group, C5-10Aryloxy group alkyl, C5-10Aromatic thiohydroxy, C5-10Aryl carbonyl, C1-6Alkyl sulfone
Base, C3-6Cycloalkanes sulfuryl or C5-10Fragrant sulfuryl.
In certain embodiments of the present invention, formula (1) compound is selected from one of such as flowering structure or a variety of
Combination:
It is more according to the present invention preferably and specific aspect, when the component A is mixed with the B component
3-20min in, the mixed system of the component A and the B component remains trickling liquid, is formed later close for splicing
The paste glue (there is anti-sag or thixotropic paste body shape glue, can be applied to elevation construction) of envelope.
Some preferred aspects according to the present invention, the time interval be 3-10min, more preferably 3-8min, further
Preferably 3~5min.
Some preferred aspects according to the present invention keep the formula (1) compound and the isocyanates anti-at 30-40 DEG C
The blocked isocyanate should be prepared.
Some specific aspects according to the present invention, in the reaction for preparing the blocked isocyanate, formula (1) compound
Feed intake mole and feed intake the ratio between the mole of middle isocyanate group of the isocyanates is 1.01-1.05: 1.
Some preferred aspects according to the present invention, in terms of mass percentage, the inventory of the blocked isocyanate is accounted for
The 1-8% of the raw material total amount of feeding of the two-component polysulfide sealant；It is highly preferred that in terms of mass percentage, the sealing end
The inventory of isocyanates accounts for the 1-5% of the raw material total amount of feeding of the two-component polysulfide sealant；It is further preferred that with matter
Percentage composition meter is measured, the inventory of the blocked isocyanate accounts for the 1- of the raw material total amount of feeding of the two-component polysulfide sealant
3%.
The mass ratio that feeds intake of more according to the present invention preferred and specific aspect, the component A and the B component is 10
:0.8-1.2.The mass ratio that feeds intake of a specific aspect according to the present invention, the component A and the B component is 10: 1.
More according to the present invention preferred and specific aspect, in terms of mass percentage, the component A is poly- comprising liquid
Sulphur rubber 55-80%, blocked isocyanate 1-3.5%, filler 0-35%, plasticizer 0-10%, silane coupling agent 0-3%；With
Mass percentage meter, the B component include manganese dioxide 50-60%, polyamine 6-12%, liquid plasticizer 0-48%, promote
Into agent 0-3%.
Some specific aspects according to the present invention, the number-average molecular weight of the liquid polysulfide rubber are 1000-6000, crosslinking
Degree is 0.1-2%.Preferably, the number-average molecular weight of the liquid polysulfide rubber is 1000-5000, degree of cross linking 0.5-1.5%.
A specific aspect according to the present invention, the liquid polysulfide rubber are the liquid polysulfide purchased from Akzo Nobel Liu Jiao company
Rubber G44 and/or liquid polysulfide rubber LP-33 purchased from toray company.
Some specific aspects according to the present invention, the isocyanates are diisocyanate or triisocyanate or both
Combination, the filler are talcum powder, kaolin or powdered whiting, and the plasticizer, the liquid plasticizer are respectively adjacent benzene
Dibutyl carboxylic acid or phthalic acid fourth Bian ester.
More according to the present invention specific and preferred aspect, the polyamine are ethylenediamine or tri-methyl hexamethylene two
Amine.
Some specific aspects according to the present invention, the promotor are 1,3- diphenylguanidine.
Another technical solution provided by the invention: a kind of application method of two-component polysulfide sealant described above, institute
The application method for stating two-component polysulfide sealant includes the following steps:
Firstly, at the construction field (site) by the component A and the B component, being mixed to get mixed system in a stirring kettle, this is mixed
Zoarium ties up to after the time interval, and generating has thixotropic paste glue for splicing sealing；
Secondly, the paste glue of aforementioned preparation to be applied to the sealing of building splice seam.
In the present invention, the stirred tank can be the stirred tank of various conventional belt rabbling mechanisms, without expensive row
Star agitating device.
In the present invention, using formula (1) compound blocked isocyanate containing active methylene group, so that closed isocyanic acid
Ester group stability with higher, is conducive to further increase storage stability, at the same when practical application and by the component A with
When the B component is mixed, the blocked isocyanate contacted with atmosphere will be dissociated, and closed isocyanates can be gradually
The isocyanate group with reactivity is released, to react with the polyamine in the B component, generates polyurea structure
Anti-sag agent, can formed after at least time interval of 3-20min with anti-sag effect for splicing sealing use
Paste glue；Specifically, in the process, the mixed system of the early period of each component mixing, liquid state have splendid mobility
Can, whole system mixing can be ensured more evenly by electric stirring equipment, wherein blocked isocyanate, polyamine are able to
The even each position for being dispersed in mixed system, blocked isocyanate compounds gradually dissociate isocyanide during mixing
Perester radical avoids so that can react in each position of mixed system and form the anti-sag agent of polyurea structure
It is close to be conducive to promotion polysulfide for the defect that direct addition anti-sag agent or thixotropic agent bring are not easy or can not mix in the prior art
Mechanical property and service life of sealing etc., and the equipment such as the planet stirring device of use costly are also avoided, it can facilitate
Site operation.
Due to the use of above technical scheme, the invention has the following advantages over the prior art:
Two-component polysulfide sealant of the invention, storage stability is good, and is able to achieve and is stirred using conventional agitating device
It mixes and uniformly avoids the problem that being not easy or can not mixing using conventional agitating device in the prior art, it is close to be conducive to promotion polysulfide
Mechanical property and service life of sealing etc. are suitable for site operation, can control to be formed for splicing the paste glue of sealing
Time interval, and then the building splice seam splicing sealing being suitable under varying environment.
Specific embodiment
Above scheme is described further below in conjunction with specific embodiment；It should be understood that these embodiments are for illustrating
The basic principles, principal features and advantages of the present invention, and the present invention is not by the scope limitation of following embodiment；It is used in embodiment
Implementation condition further adjustment can be done according to specific requirement, the implementation condition being not specified is usually the item in routine experiment
Part.
In following, unless otherwise specified, all raw materials are substantially from conventional method that is commercially available or passing through this field
It is prepared.
Liquid polysulfide rubber G44 is purchased from Akzo Nobel Liu Jiao company, and liquid polysulfide rubber LP-33 is purchased from toray
Company；The structure of following formula used in the examples (1) compounds is specific as follows:
The preparation of 1 blocked isocyanate of embodiment
Formula (1a) compound (1.01mol), 2,4- toluene di-isocyanate(TDI) (0.5mol) are weighed, is mixed, it is anti-at 35 DEG C
It answers, blocked isocyanate shown in formula (2a) is made.
The preparation of 2 blocked isocyanate of embodiment
Formula (1b) compound (1.01mol), isophorone diisocyanate (0.5mol) are weighed, is mixed, it is anti-at 40 DEG C
It answers, blocked isocyanate shown in formula (2b) is made.
The preparation of 3 blocked isocyanate of embodiment
Formula (1c) compound (1.01mol), hexamethylene diisocyanate (0.5mol) are weighed, is mixed, it is anti-at 40 DEG C
It answers, blocked isocyanate shown in formula (2c) is made.
The preparation of 4 blocked isocyanate of embodiment
Formula (1d) compound (1.01mol), methyl diphenylene diisocyanate (0.5mol) are weighed, is mixed, at 30 DEG C
Blocked isocyanate shown in formula (2d) is made in reaction.
Embodiment 5-8
Following embodiment 5-8 provide a kind of two-component polysulfide sealant, in terms of mass fraction, composition of raw materials packet respectively
It includes: 100 parts of component A, 10 parts of B component；Specific ingredient and dosage are referring to the following table 1.
The formulation dosage of two-component polysulfide sealant shown in table 1, embodiment 5-8
Two-component polysulfide sealant shown in above-described embodiment 5-8 is applied to the splicing sealing of building splice seam, specifically
Mode of operation is as follows:
Firstly, directly at the construction field (site) by component A described in each embodiment and the B component, in common stirred tank
In be mixed to get mixed system, which is in a liquid state always in a certain time interval, easily stirring flowing, and herein it
Afterwards, the viscosity of mixed system steeply rises, and is gradually in body of paste, forms the paste for splicing sealing with anti-sag
Glue；
Secondly, the paste glue of aforementioned preparation is applied to building splice seam sealing.
The time interval for measuring each embodiment in above-mentioned mixing process is as shown in table 2.
Table 2
| Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | |
| Time interval (min) | 7 | 13 | 10 | 3.5 |
Can be learnt by above-described embodiment: the specific two-component polysulfide sealant of the present invention, each component mixing early period,
Mixed system has splendid mobile performance, and wherein blocked isocyanate, polyamine are uniformly dispersed in each of mixed system
A position, blocked isocyanate gradually dissociates isocyanate group during mixing, so that in each of mixed system
A position can react and form the anti-sag agent of polyurea structure, so that the anti-sag agent of polyurea structure is entire
Dispersibility is splendid in system, and it is difficult to avoid direct addition anti-sag agent (thixotropic agent) bring production and construction in the prior art
Degree.It is more equal that the presence of time interval makes construction personnel that there is time enough to be mixed whole system using convention stir kettle
It is even, be conducive to promote mechanical property and service life of polysulfide sealant etc., and also avoid and stir using planet costly
The equipment such as device are mixed, site operation can be facilitated.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of two-component polysulfide sealant, including component A and B component, the component A includes liquid polysulfide rubber, the B group
Subpackage contains manganese dioxide, is will form after the component A is mixed with B component for splicing the paste glue of sealing, feature exists
In: the component A also includes blocked isocyanate, and the blocked isocyanate is reacted by formula (1) compound with isocyanates
And it is made；
Wherein, R1、R2Separately it is selected from alkyl, oxyl, hydrocarbon sulfydryl, alkyl carbonyl, alkyl
Epoxide carbonyl, alkyl sulfinyl, naphthenic base, cycloalkyloxy, cycloalkanes sulfydryl, carbonyl naphthene, Heterocyclylalkyl, heterocyclylalkoxy groups,
Heterocycle alkane sulfydryl, heterocycloalkylcarbonyl, aryl, aryloxy group, aryloxy group alkyl, aromatic thiohydroxy, aryl carbonyl, alkyl sulfuryl, cycloalkanes
Sulfuryl or fragrant sulfuryl；
The B component also includes polyamine, and the molar ratio of the polyamine and the blocked isocyanate is 1: 0.9-
1.1；
In trickling liquid when initial after being mixed under the component A and the B component room temperature, certainly by the component A and the B component
Mixing starts to being formed between the paste glue for splicing sealing not trickled, and has at least time interval of 3min.
2. two-component polysulfide sealant according to claim 1, which is characterized in that the R1、R2The carbon number difference contained
For 1-20；It is highly preferred that the R1、R2The carbon number contained is respectively 1-10.
3. two-component polysulfide sealant according to claim 2, which is characterized in that the R1、R2Separately it is selected from
C1-6Alkyl, C1-6Oxyl, C1-6Hydrocarbon sulfydryl, C1-6Alkyl carbonyl, C1-6Hydrocarbyloxycarbonyl, C1-6Alkyl sulfinyl, C3-6Ring
Alkyl, C3-6Cycloalkyloxy, C3-6Cycloalkanes sulfydryl, C3-6Carbonyl naphthene, C4-8Heterocyclylalkyl, C4-8Heterocyclylalkoxy groups, C4-8Heterocycle alkane
Sulfydryl, C4-8Heterocycloalkylcarbonyl, C5-10Aryl, C5-10Aryloxy group, C5-10Aryloxy group alkyl, C5-10Aromatic thiohydroxy, C5-10Aryl carbonyl
Base, C1-6Alkyl sulfuryl, C3-6Cycloalkanes sulfuryl or C5-10Fragrant sulfuryl.
4. two-component polysulfide sealant described in any one of -3 claims according to claim 1, which is characterized in that the formula
(1) compound is selected from one of such as flowering structure or a variety of combinations:
5. two-component polysulfide sealant according to claim 1, which is characterized in that certainly by the component A and the B component
In the 3-20min started when mixing, the mixed system of the component A and the B component remains trickling liquid, later shape
At the paste glue for splicing sealing.
6. two-component polysulfide sealant according to claim 1 or 5, which is characterized in that the time interval is 3-
10min, further preferably 3~5min.
7. two-component polysulfide sealant according to claim 1, which is characterized in that make the formula (1) compound with it is described
Isocyanates reacts at 30-40 DEG C prepares the blocked isocyanate；And/or prepare the reaction of the blocked isocyanate
In, feed intake the ratio between the mole of middle isocyanate group of feed intake mole and the isocyanates of formula (1) compound is
1.01-1.05:1；And/or
In terms of mass percentage, the raw material that the inventory of the blocked isocyanate accounts for the two-component polysulfide sealant is always thrown
The 1-8% of doses；Preferably, in terms of mass percentage, the inventory of the blocked isocyanate accounts for the two-component polysulfide
The 1-5% of the raw material total amount of feeding of sealant；It is highly preferred that the blocked isocyanate feeds intake in terms of mass percentage
Amount accounts for the 1-3% of the raw material total amount of feeding of the two-component polysulfide sealant.
8. two-component polysulfide sealant according to claim 1, which is characterized in that the throwing of the component A and the B component
Expect that mass ratio is 10: 0.8-1.2；
Wherein, in terms of mass percentage, the component A includes liquid polysulfide rubber 55-80%, blocked isocyanate 1-
3.5%, filler 0-35%, plasticizer 0-10%, silane coupling agent 0-3%；In terms of mass percentage, the B component includes
Manganese dioxide 50-60%, polyamine 6-12%, liquid plasticizer 0-48%, promotor 0-3%.
9. two-component polysulfide sealant according to claim 8, which is characterized in that the number of the liquid polysulfide rubber is divided equally
Son amount is 1000-6000, degree of cross linking 0.1-2%；And/or the isocyanates be diisocyanate or triisocyanate or
Combination, the filler are talcum powder, kaolin or powdered whiting, the plasticizer, liquid plasticizer difference
For dibutyl phthalate or phthalic acid fourth Bian ester；And/or the polyamine is ethylenediamine or tri-methyl hexamethylene
Diamines, the promotor are 1,3- diphenylguanidine.
10. the application method of two-component polysulfide sealant described in a kind of any one of claim 1-9 claim, feature
It is, the application method of the two-component polysulfide sealant includes the following steps:
Firstly, at the construction field (site) by the component A and the B component, being mixed to get mixed system in a stirring kettle, the mixture
It ties up to after the time interval, generating has thixotropic paste glue for splicing sealing；
Secondly, the paste glue of aforementioned preparation to be applied to the sealing of building splice seam.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854355A (en) * | 2022-06-02 | 2022-08-05 | 郑州大学 | Isocyanate-terminated bi-component polysulfide adhesive and preparation method thereof |
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| 程曾越: "《通用树脂实用技术手册》", 30 November 1999, 中国石化出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854355A (en) * | 2022-06-02 | 2022-08-05 | 郑州大学 | Isocyanate-terminated bi-component polysulfide adhesive and preparation method thereof |
| CN114854355B (en) * | 2022-06-02 | 2023-05-26 | 郑州大学 | Isocyanate-terminated bi-component polysulfide adhesive and preparation method thereof |
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| CN110317566B (en) | 2021-06-11 |
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