CN104694065B - Automobile silicane-modified polyurethane fluid sealant and preparation method thereof - Google Patents
Automobile silicane-modified polyurethane fluid sealant and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of automobile silicane-modified polyurethane fluid sealant and preparation method thereof, it is raw material by silicane-modified polyurethane polymer, plasticizer, filler, reinforcing agent, cross-linking agent, viscosifier, catalyst, antioxidant, first by silicane-modified polyurethane, plasticizer at temperature 80～90 DEG C, mix homogeneously under vacuum 0.06～0.09MPa；It is subsequently adding filler, is uniformly mixed；Adding reinforcing agent, antioxidant, temperature 100～120 DEG C, vacuum 0.06～0.09MPa dehydration is blended uniformly；Being eventually adding cross-linking agent, viscosifier, catalyst, under vacuum 0.06～0.09MPa, mix homogeneously obtains automobile silicane-modified polyurethane fluid sealant.This automobile silicane-modified polyurethane fluid sealant is compared with existing same type of material, and the mechanical property range of choice is wide, can require that the sealing for automobile difference parts is bonding according to difference；Water resistance is excellent, it is ensured that the safety of automobilism；It is provided simultaneously with the mechanical performance of excellence, cementability, resistance to ag(e)ing, can be widely applied to automobile manufacturing field.
Description
Technical field
Embodiments of the present invention relate to polymeric material field, more specifically, embodiments of the present invention relate to
And a kind of hydrolyze under moist conditions by cross-linking agent and silicane-modified polyurethane crosslink react prepare and
The automobile silicane-modified polyurethane fluid sealant and preparation method thereof obtained.
Background technology
Continuous progressive along with science and technology, automobile industry gradually to safety and comfort, good looking appearance, energy-conserving and environment-protective,
Light-weighted direction is developed.As one of indispensable material in automobile making, the exploitation of high performance sealant and
Application seems abnormal important.
Fluid sealant is a kind of for filling cavity, the material of seam, at automobile manufacturing field, is mainly used in gear
The parts such as wind glass, car light, door and window, vehicle-mounted skylight, automotive trim bonding and sealing, play waterproof,
Dust-proof, sound insulations etc. act on.
Polyurethane sealant is one of encapsulant that application is wide at present.Polyurethane sealant has excellence
Mechanical performance, be mainly used in the assembling of windshield.But polyurethane material ageing-resistant performance is poor,
Easily there is phenomenons such as leaking in fluid sealant after aging, it is impossible to ensure the safety of automobilism.Polyurethane is close
The cementability that sealing commonly uses inorganic material with the automobile such as glass, aluminium is poor, during use, need to coordinate special
Primary coat can ensure its cementability, and construction technology is more complicated.It addition, one of raw material preparing polyurethane isocyanide
Acid esters belongs to severe toxicity class, not environmentally.
Organosilicon sealant curing rate is fast, good with inorganic material cementability, high temperature resistant, ageing-resistant performance is excellent
Different, service life is long, but its mechanical performance is poor, it is impossible to enough meet the requirement of Automobile sealant.
Organic silicon modified polyurethane fluid sealant not only has the mechanical performance that polyurethane sealant is excellent, and has
There are cementability that organosilicon sealant is good, the performance such as ageing-resistant, become the one of current Automobile sealant
Preferably select.Individually disclose in patent CN102504748, CN102516917 and CN104087230
A kind of silicane-modified polyurethane material, is respectively provided with mechanical performance, cementability and the ageing-resistant performance of excellence, its
In, disclosed in patent CN102504748, silicane-modified polyurethane material has the characteristic of quick surface drying,
Disclosed in CN102516917, silicane-modified polyurethane material has more excellent heat resistance, CN104087230
Disclosed silicane-modified polyurethane material is more environmentally friendly.But, above organic silicon modified polyurethane fluid sealant patent
The technical products mechanical property range of choice is narrower, it is impossible to fully meet the use of Automobile sealant difference parts
Requirement.It addition, as it was previously stated, waterproof is one of the effect of Automobile sealant, and existing silane-modified poly-
In urethane fluid sealant patented technology, the resistance to water of material is not yet mentioned.
Therefore, for meeting the automobile manufacture industry different use requirements to fluid sealant, it is ensured that car running process
In safe and stable property, needing exploitation badly, a kind of the mechanical property range of choice is wide, water resistance is excellent, and with
Time possess excellence mechanical performance, cementability, the automobile silicane-modified polyurethane fluid sealant of resistance to ag(e)ing.
Summary of the invention
The present invention is directed to the deficiency of existing silicane-modified polyurethane fluid sealant performance, it is provided that a kind of automobile silane
Modified polyurethane sealant and preparation method thereof, obtains a kind of mechanical performance, bonding with excellence with expectation
Property, resistance to ag(e)ing, resistance to water and the mechanical property range of choice wider array of automobile silicane-modified polyurethane seal
Glue.
For solving above-mentioned technical problem, one embodiment of the present invention by the following technical solutions:
A kind of automobile silicane-modified polyurethane fluid sealant, this fluid sealant is by following raw material system by weight
Become:
The silicane-modified polyurethane polymer that automobile silicane-modified polyurethane fluid sealant of the present invention uses
Raw material be the silicane-modified polyurethane of trimethoxy silane end-blocking, triethoxysilane end-blocking silane-modified poly-
Urethane or the mixture of the two.
The plasticizer raw material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is O-phthalic
Acid di-isooctyl, diisobutyl phthalate, diisooctyl phthalate, the different nonyl of phthalic acid two
Ester, diethyl phthalate, dibutyl phthalate, dioctyl phthalate, phthalic acid
At least one in butyl benzyl ester.
The filler material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is calcium carbonate, gas
At least one in phase white carbon, titanium dioxide, white carbon black, Pulvis Talci, organobentonite.
The reinforcing agent raw material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is liquid butyl
At least one in rubber, liquid styrene butadiene rubber, LNBR, liquid isoprene rubber.
The cross-linking agent raw material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is methyl trimethoxy
TMOS, MTES, vinyltrimethoxy silane, VTES,
At least one in anilinomethyl triethoxysilane.
The viscosifier raw material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is aminopropyl three
Methoxy silane, aminopropyl triethoxysilane, aminopropyltriethoxy dimethoxysilane, aminoethylaminopropyl
Trimethoxy silane, aminoethylaminopropyl triethoxysilane, aminoethyl aminomethyl triethoxysilane, ring
At least one in oxygen the third oxygen propyl trimethoxy silicane and ureido-propyl trimethoxy silane.
The catalyst raw material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is tin dilaurate
Dibutyl tin, dibutyl tin acetate, dibutyl two maleic acid stannum, dibutyl tin dioctoate, stannous octoate,
At least one in tetra isopropyl titanate and tetra-n-butyl titanate esters.
The antioxidant raw material that automobile silicane-modified polyurethane fluid sealant of the present invention uses is 2,6-bis-uncle
Butyl paracresol, tetramethylene β-(3,5-di-tert-butyl-hydroxy phenyl) propionate and 4,4`-
At least one in two t-octyl diphenylamines.
Present invention also offers a kind of method preparing above-mentioned automobile silicane-modified polyurethane fluid sealant, its bag
Include following steps:
(1) by the silicane-modified polyurethane polymer of 100 weight portions, 20～100 plasticizers of weight portion
Add in blender, stirring mixing under the conditions of temperature 80～90 DEG C, vacuum 0.06～0.09MPa
10～30 minutes；
(2) mixture obtained after step (1) stirring mixing is cooled to less than 60 DEG C, stops taking out very
Sky and stirring, add the filler of 20～300 weight portions, stirring mixing 30～60 minutes；
(3) mixture obtained after step (2) stirring mixing adds the benefit of 50～200 weight portions
Strong agent, 0.1～1 antioxidant of weight portion, in temperature 100～120 DEG C, vacuum 0.06～0.09MPa
Under the conditions of dehydration be blended 60～120 minutes；
(4) mixture obtained after step (3) dehydration being blended is cooled to less than 50 DEG C, stops taking out very
Empty and stirring, adds the cross-linking agent of 5～30 weight portions, 0.5～2 viscosifier, 0.1～2 of weight portion
The catalyst of weight portion, stirring mixing 10～30 minutes under the conditions of vacuum 0.06～0.09MPa,
Obtain automobile silicane-modified polyurethane fluid sealant.
In order to obtain combination property more preferable automobile silicane-modified polyurethane fluid sealant, this fluid sealant is by by weight
The following material of amount part meter is raw material:
And use the method comprised the steps of to prepare:
(1) by the silicane-modified polyurethane polymer of 100 weight portions, 20～90 weight portion plasticizer add
In blender, under the conditions of temperature 80～90 DEG C, vacuum 0.08～0.09MPa stirring mixing 15～
30 minutes；
(2) mixture that obtains after step (1) stirring mixing is cooled to less than 60 DEG C, stop evacuation and
Stirring, adds the filler of 100～150 weight portions, stirring mixing 40～50 minutes；
(3) mixture obtained after step (2) stirring mixing adds the reinforcement of 100～150 weight portions
Agent, 0.1～1 antioxidant of weight portion, in temperature 100～120 DEG C, vacuum 0.07～0.085MPa
Under the conditions of dehydration be blended 90～100 minutes；
(4) mixture obtained after step (3) dehydration being blended is cooled to less than 50 DEG C, stops evacuation and stirs
Mix, add the cross-linking agent of 8～15 weight portions, 1～2 viscosifier, 0.5～2 catalysis of weight portion of weight portion
Agent, under the conditions of vacuum 0.08～0.09MPa, stirring mixing 10～20 minutes, obtain automobile silane and change
Property polyurethane sealant.
Compared with prior art, the method have the advantages that
1, the automobile silicane-modified polyurethane fluid sealant mechanical performance of the present invention improves further, and according to increasing
Stick kind and the adjustment of consumption, mechanical property is adjustable in relative broad range, can select for automobile difference parts
With more suitably sealant material.
2, the automobile silicane-modified polyurethane fluid sealant of the present invention adds special reinforcing agent, and water resistance is excellent
Different, improve the safety of automobilism, comfortableness further.
3, the automobile silicane-modified polyurethane fluid sealant preparation technology of the present invention is simple, adhesive strength is big, resistance to
Ageing properties is excellent, system environmental protection, can meet the requirement of Automobile sealant.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment and
Comparative example, is further elaborated to the present invention.Should be appreciated that concrete reality described herein
Execute example only in order to explain the present invention, be not intended to limit the present invention.
In following each embodiment, the measurement unit " part " of each material refers to weight portion.
Embodiment 1
By triethoxysilane block silicane-modified polyurethane 100 parts, diisooctyl phthalate 15 parts,
In 5 parts of addition blenders of dioctyl phthalate, temperature 80 DEG C, stirring mixing under vacuum 0.09MPa
15 minutes；Be cooled to less than 60 DEG C, stop evacuation and stirring, add calcium carbonate 40 parts, titanium dioxide 40 parts,
White carbon black 10 parts, gas-phase silica 10 parts, stirring mixing 40 minutes；Add liquid butyl rubber 80 parts, liquid
Isoprene rubber 20 parts, tetramethylene β-(3,5-di-tert-butyl-hydroxy phenyl) propionate
0.5 part, in temperature 120 DEG C, vacuum 0.07MPa, dehydration is blended 100 minutes；It is cooled to less than 50 DEG C, stops
Only evacuation and stirring, adds vinyltrimethoxy silane 12 parts, VTES 3 parts, urea
Base propyl trimethoxy silicane 1 part, dibutyl tin laurate 0.8 part, stannous octoate 0.2 part, in vacuum
Under 0.085MPa, stirring mixing 20 minutes, obtain automobile silicane-modified polyurethane fluid sealant, properties of product
Test result details are shown in Table 1.
Embodiment 2
By trimethoxy silane block silicane-modified polyurethane 100 parts, diisononyl phthalate 50 parts,
In 25 parts of addition blenders of dioctyl phthalate, temperature 80 DEG C, stirring mixing under vacuum 0.06MPa
30 minutes；Be cooled to less than 60 DEG C, stop evacuation and stirring, add calcium carbonate 25 parts, Pulvis Talci 20 parts,
Gas-phase silica 5 parts, stirring mixing 60 minutes；Add liquid styrene butadiene rubber 55 parts, 2,6-di-t-butyl to first
0.2 part of phenol, in temperature 100 DEG C, vacuum 0.06MPa, dehydration is blended 120 minutes；It is cooled to less than 50 DEG C,
Stop evacuation and stirring, add vinyltrimethoxy silane 5 parts, aminopropyl trimethoxysilane 0.5 part,
Dibutyl tin acetate 0.5 part, under vacuum 0.09MPa, stirring mixing 15 minutes, obtain automobile silane and change
Property polyurethane sealant, the test result details of properties of product are shown in Table 1.
Embodiment 3
The silicane-modified polyurethane 50 parts, the silane of triethoxysilane end-blocking that are blocked by trimethoxy silane change
Property polyurethane 50 parts, diisooctyl phthalate 50 parts, butyl benzyl phthalate 50 parts add stirring
In machine, temperature 90 DEG C, stirring mixing 10 minutes under vacuum 0.08MPa；It is cooled to less than 60 DEG C, stops
Evacuation and stirring, add white carbon black 50 parts, organobentonite 50 parts, titanium dioxide 30 parts, Pulvis Talci 30 parts,
Gas-phase silica 10 parts, stirring mixing 55 minutes；Add liquid butyl rubber 80 parts, 2,6-di-t-butyl to first
0.1 part of phenol, 4,4`-bis-t-octyl diphenylamines 0.5 part, temperature 110 DEG C, vacuum 0.09MPa, dehydration is blended
60 minutes；It is cooled to less than 50 DEG C, stopping evacuation and stirring, addition MTMS 10 parts,
VTES 10 parts, aminoethylaminopropyl trimethoxy silane 1 part, dibutyl tin dioctoate 0.5
Part, tetra isopropyl titanate 0.3 part, under vacuum 0.08MPa, stirring mixing 10 minutes, obtain automobile silicon
Alkane modified polyurethane sealant, the test result details of properties of product are shown in Table 1.
Embodiment 4
By the silicane-modified polyurethane 100 parts of triethoxysilane end-blocking, diethyl phthalate 30 parts, neighbour
In 20 parts of addition blenders of phthalic acid dibutyl ester, temperature 85 DEG C, stirring mixing under vacuum 0.085MPa
15 minutes；Be cooled to less than 60 DEG C, stop evacuation and stirring, add calcium carbonate 200 parts, white carbon black 50 parts,
Organobentonite 50 parts, stirring mixing 30 minutes；Add liquid styrene butadiene rubber 100 parts, LNBR 60
Part, 4,4`-bis-t-octyl diphenylamines 0.8 part, temperature 100 DEG C, vacuum 0.085MPa, dehydration is blended 90
Minute；It is cooled to less than 50 DEG C, stopping evacuation and stirring, addition vinyltrimethoxy silane 15 parts,
Anilinomethyl triethoxysilane 5 parts, aminopropyl trimethoxysilane 1 part, aminopropyl triethoxysilane 0.8
Part, aminoethyl aminomethyl triethoxysilane 0.2 part, tetra-n-butyl titanate esters 0.1 part, in vacuum 0.06MPa
Lower stirring mixing 30 minutes, obtains automobile silicane-modified polyurethane fluid sealant, the test result of properties of product
Details are shown in Table 1.
Embodiment 5
The silicane-modified polyurethane 100 parts, the diisooctyl phthalate 90 parts that are blocked by trimethoxy silane add
Enter in blender, temperature 90 DEG C, stirring mixing 20 minutes under vacuum 0.08MPa；It is cooled to less than 60 DEG C,
Stop evacuation and stirring, add calcium carbonate 60 parts, white carbon black 60 parts, gas-phase silica 30 parts, stirring mixing
50 minutes；Add liquid butyl rubber 90 parts, liquid styrene butadiene rubber 60 parts, DBPC 2,6 ditertiary butyl p cresol 0.3
Part, tetramethylene β-(3,5-di-tert-butyl-hydroxy phenyl) propionate 0.7 part, temperature 100 DEG C,
Vacuum 0.08MPa, dehydration is blended 100 minutes；It is cooled to less than 50 DEG C, stops evacuation and stirring, add
Enter vinyltrimethoxy silane 8 parts, ureido-propyl trimethoxy silane 2 parts, dibutyl two maleic acid stannum 0.3
Part, tetra-n-butyl titanate esters 0.2 part, under vacuum 0.09MPa, stirring mixing 10 minutes, obtain automobile silicon
Alkane modified polyurethane sealant, the test result details of properties of product are shown in Table 1.
Embodiment 6
By trimethoxy silane block silicane-modified polyurethane 100 parts, diisobutyl phthalate 20 parts,
In 10 parts of addition blenders of diisooctyl phthalate, temperature 80 DEG C, stir under vacuum 0.075MPa
Mix 20 minutes；It is cooled to less than 60 DEG C, stops evacuation and stirring, add titanium dioxide 40 parts, white carbon black 20
Part, Pulvis Talci 20 parts, stirring mixing 40 minutes；Add liquid butyl rubber 100 parts, liquid styrene butadiene rubber 50
Part, liquid isoprene rubber 50 parts, tetramethylene β-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid season
Doutrate 0.1 part, in temperature 100～120 DEG C, vacuum 0.075MPa, dehydration is blended 80 minutes；Cooling
To less than 50 DEG C, stop evacuation and stirring, add vinyltrimethoxy silane 25 parts, methyl three ethoxy
Base silane 5 parts, aminoethylaminopropyl trimethoxy silane 0.5 part, dibutyl tin laurate 0.1 part, very
Under reciprocal of duty cycle 0.09MPa, stirring mixing 18 minutes, obtain automobile silicane-modified polyurethane fluid sealant, properties of product
Test result details be shown in Table 1.
Embodiment 7
By triethoxysilane block silicane-modified polyurethane 100 parts, diisononyl phthalate 80 parts,
In 10 parts of addition blenders of diisooctyl phthalate, temperature 90 DEG C, under vacuum 0.09MPa, stirring is mixed
Close 12 minutes；It is cooled to less than 60 DEG C, stops evacuation and stirring, add filler-calcium carbonate 150 parts, titanium white
30 parts of powder, gas-phase silica 30 parts, stirring mixing 30 minutes；Addition liquid butyl rubber 25 parts, liquid are different
Pentadiene rubber 25 parts, 2,6 ditertiary butyl p cresol 0.5 part, temperature 100 DEG C, vacuum 0.09MPa,
Dehydration is blended 80 minutes；It is cooled to less than 50 DEG C, stops evacuation and stirring, add vinyl triethoxyl
20 parts of silane, MTMS 5 parts, aminopropyl triethoxysilane 0.5 part, epoxypropoxy three
Methoxy silane 0.1 part, dibutyl tin laurate 0.8 part, dibutyl tin acetate 0.8 part, tetra-n-butyl titanium
Acid esters 0.4 part, under vacuum 0.09MPa, stirring mixing 20 minutes, obtain automobile silicane-modified polyurethane close
Sealing, the test result details of properties of product are shown in Table 1.
Embodiment 8
By silicane-modified polyurethane 100 parts, the dioctyl phthalate 80 parts addition of trimethoxy silane end-blocking
In blender, temperature 90 DEG C, stirring mixing 30 minutes under vacuum 0.085MPa；It is cooled to less than 60 DEG C,
Stop evacuation and stirring, add calcium carbonate 60 parts, white carbon black 30 parts, organobentonite 25 parts, gas phase Linesless charcoal
Black 5 parts, stirring mixing 40 minutes；Add liquid butyl rubber 80 parts, LNBR 40 parts, four methylenes
Base β-(3,5-di-tert-butyl-hydroxy phenyl) propionate 0.2 part, 4,4`-bis-t-octyl diphenylamines
0.2 part, in temperature 110 DEG C, vacuum 0.085MPa, dehydration is blended 90 minutes；It is cooled to less than 50 DEG C, stops
Only evacuation and stirring, adds vinyltrimethoxy silane 12 parts, aminopropyl trimethoxysilane 1 part, urea
Base propyl trimethoxy silicane 0.5 part, dibutyl tin laurate 1 part, stannous octoate 0.6 part, in vacuum
Under 0.085MPa, stirring mixing 20 minutes, obtain automobile silicane-modified polyurethane fluid sealant, properties of product
Test result details are shown in Table 1.
Comparative example 1 (not using reinforcing agent)
By trimethoxy silane block silicane-modified polyurethane 100 parts, diisooctyl phthalate 15 parts,
In 5 parts of addition blenders of dioctyl phthalate, temperature 80 DEG C, stirring mixing under vacuum 0.09MPa
15 minutes；Be cooled to less than 60 DEG C, stop evacuation and stirring, add calcium carbonate 40 parts, titanium dioxide 40 parts,
White carbon black 10 parts, gas-phase silica 10 parts, stirring mixing 40 minutes；Add tetramethylene β-(3,5-bis-tertiary fourths
Base-4-hydroxy phenyl) propionate 0.5 part, in temperature 120 DEG C, vacuum 0.07MPa, dehydration is altogether
Mixed 100 minutes；It is cooled to less than 50 DEG C, stops evacuation and stirring, add vinyltrimethoxy silane 12
Part, VTES 3 parts, ureido-propyl trimethoxy silane 1 part, dibutyl tin laurate
0.8 part, stannous octoate 0.2 part, under vacuum 0.085MPa, stirring mixing 20 minutes, obtain automobile silane
Modified polyurethane sealant, the test result details of properties of product are shown in Table 1.
Comparative example 2 (not using viscosifier)
The silicane-modified polyurethane 100 parts, the diisooctyl phthalate 90 parts that are blocked by triethoxysilane add
Enter in blender, temperature 90 DEG C, stirring mixing 20 minutes under vacuum 0.08MPa；It is cooled to less than 60 DEG C,
Stop evacuation and stirring, add calcium carbonate 60 parts, white carbon black 60 parts, gas-phase silica 30 parts, stirring mixing
50 minutes；Add liquid butyl rubber 90 parts, liquid styrene butadiene rubber 60 parts, DBPC 2,6 ditertiary butyl p cresol 0.3
Part, tetramethylene β-(3,5-di-tert-butyl-hydroxy phenyl) propionate 0.7 part, temperature 100 DEG C,
Vacuum 0.08MPa, dehydration is blended 100 minutes；It is cooled to less than 50 DEG C, stops evacuation and stirring, add
Enter vinyltrimethoxy silane 8 parts, 0.3 part of dibutyl two maleic acid stannum, tetra-n-butyl titanate esters 0.2 part,
Under vacuum 0.09MPa, stirring mixing 10 minutes, obtain automobile silicane-modified polyurethane fluid sealant, product
The test result details of performance are shown in Table 1.
The automobile silicane-modified polyurethane fluid sealant that the various embodiments described above prepare, is not making any process to it
Time test fluid sealant performance, then place 24 hours under the conditions of 120 DEG C, UV300 surveys after irradiating 24 lab scales again
Try its performance.During test performance, test surface drying time by GB/T 13477, test hot strength by GB/T528
And elongation at break, test shear strength by GB/T 7124, test impermeability, test knot by GB/T 23445
The most as shown in Table 1 below.
Table 1 automobile silicane-modified polyurethane fluid sealant the performance test results
Result shows, by automobile the most made in accordance with the present invention with silicane-modified polyurethane fluid sealant with according to
The automobile silicane-modified polyurethane fluid sealant of manufacture of the present invention compares, and the automobile of the present invention is with silane-modified poly-
Urethane fluid sealant mechanical strength is higher, and anti-permeability performance is more excellent, and mechanical property is adjustable in relative broad range.
Although reference be made herein to invention has been described for the multiple explanatory embodiment of the present invention, but, should
This understanding, those skilled in the art can be designed that a lot of other amendments and embodiment, these amendment and
Embodiment will fall within spirit disclosed in the present application and spirit.More specifically, public in the application
Open with claim in the range of, the building block of theme composite configuration and/or layout can be carried out multiple change
Type and improvement.In addition to the modification that building block and/or layout are carried out and improvement, for people in the art
For Yuan, other purposes also will be apparent from.
Claims (8)
1. an automobile silicane-modified polyurethane fluid sealant, it is characterised in that this fluid sealant is by by weight
Following raw material is made:
Described silicane-modified polyurethane polymer be trimethoxy silane end-blocking silicane-modified polyurethane,
The silicane-modified polyurethane of triethoxysilane end-blocking or the mixture of the two；Described reinforcing agent is liquid
In body butyl rubber, liquid styrene butadiene rubber, LNBR, liquid isoprene rubber at least
A kind of.
Automobile silicane-modified polyurethane fluid sealant the most according to claim 1, it is characterised in that described increasing
Mould agent be diisooctyl phthalate, diisobutyl phthalate, diisooctyl phthalate,
Diisononyl phthalate, diethyl phthalate, dibutyl phthalate, O-phthalic
At least one in dioctyl phthalate, butyl benzyl phthalate.
Automobile silicane-modified polyurethane fluid sealant the most according to claim 1, it is characterised in that described in fill out
Material in calcium carbonate, gas-phase silica, titanium dioxide, white carbon black, Pulvis Talci, organobentonite at least
A kind of.
Automobile silicane-modified polyurethane fluid sealant the most according to claim 1, it is characterised in that described friendship
Connection agent is MTMS, MTES, vinyltrimethoxy silane, second
At least one in thiazolinyl triethoxysilane, anilinomethyl triethoxysilane.
Automobile silicane-modified polyurethane fluid sealant the most according to claim 1, it is characterised in that described increasing
Stick is aminopropyl trimethoxysilane, aminopropyl triethoxysilane, aminopropyltriethoxy dimethoxy
Silane, aminoethylaminopropyl trimethoxy silane, aminoethylaminopropyl triethoxysilane, aminoethyl
Aminomethyl triethoxysilane, glycidoxy-propyltrimethoxy silane and ureido-propyl trimethoxy silicon
At least one in alkane.
Automobile silicane-modified polyurethane fluid sealant the most according to claim 1, it is characterised in that described in urge
Agent is dibutyl tin laurate, dibutyl tin acetate, dibutyl two maleic acid stannum, dibutyl
At least one in two tin octoates, stannous octoate, tetra isopropyl titanate and tetra-n-butyl titanate esters.
Automobile silicane-modified polyurethane fluid sealant the most according to claim 1, it is characterised in that described anti-
Oxygen agent is 2,6 ditertiary butyl p cresol, tetramethylene β-(3,5-di-tert-butyl-hydroxy phenyl)
At least one in propionate and 4,4`-bis-t-octyl diphenylamines.
8. the automobile silicane-modified polyurethane fluid sealant prepared as described in claim 1～7 any one
Method, it is characterised in that it comprises the following steps:
(1) by the silicane-modified polyurethane polymer of 100 weight portions, 20～100 the plasticizer of weight portion add
Enter in blender, under the conditions of temperature 80～90 DEG C, vacuum 0.06～0.09MPa stirring mixing 10～
30 minutes；
(2) mixture obtained after step (1) stirring mixing is cooled to less than 60 DEG C, stops evacuation
And stirring, add the filler of 20～300 weight portions, stirring mixing 30～60 minutes；
(3) mixture obtained after step (2) stirring mixing adds the reinforcement of 50～200 weight portions
Agent, 0.1～1 antioxidant of weight portion, in temperature 100～120 DEG C, vacuum 0.06～0.09MPa
Under the conditions of dehydration be blended 60～120 minutes；
(4) mixture obtained after step (3) dehydration being blended is cooled to less than 50 DEG C, stops evacuation
And stirring, add the cross-linking agent of 5～30 weight portions, 0.5～2 viscosifier, 0.1～2 weights of weight portion
The catalyst of amount part, stirring mixing 10～30 minutes under the conditions of vacuum 0.06～0.09MPa, i.e.
Obtain automobile silicane-modified polyurethane fluid sealant.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109929497A (en) * | 2019-04-08 | 2019-06-25 | 宜昌众智环保科技有限公司 | A kind of MS sealant processing technology |
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| CN115433534B (en) * | 2022-09-20 | 2024-02-13 | 江西博泓新材料科技有限公司 | SPU modified polyether adhesive special for automobile sheet metal |
| CN115466595B (en) * | 2022-11-07 | 2024-04-02 | 河南瑞朗达新材料有限公司 | Bi-component modified silicone rubber adhesive for bonding automobile cabin door, preparation method and bonding process thereof |
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| CN1091765A (en) * | 1994-01-18 | 1994-09-07 | 吉林省华详实业公司 | Polyurethane binder/sealant and making method |
| CN102181257A (en) * | 2011-01-31 | 2011-09-14 | 北京东方雨虹防水技术股份有限公司 | Single-component silane modified polyurethane sealant and preparation method |
| CN102504750B (en) * | 2011-11-22 | 2013-11-20 | 东莞市普赛达密封粘胶有限公司 | Polyurethane sealant with good initial adhesion |
| CN102516917A (en) * | 2011-12-05 | 2012-06-27 | 湖北回天胶业股份有限公司 | Heat resistance single-component silane modified polyurethane sealant and preparation method thereof |
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| CN109929497A (en) * | 2019-04-08 | 2019-06-25 | 宜昌众智环保科技有限公司 | A kind of MS sealant processing technology |
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