CN110257002A - A kind of Projecting Lamp two-component silicone sealant - Google Patents
A kind of Projecting Lamp two-component silicone sealant Download PDFInfo
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- CN110257002A CN110257002A CN201910434464.6A CN201910434464A CN110257002A CN 110257002 A CN110257002 A CN 110257002A CN 201910434464 A CN201910434464 A CN 201910434464A CN 110257002 A CN110257002 A CN 110257002A
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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
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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
- C09J11/06—Non-macromolecular additives organic
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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
- C09J11/08—Macromolecular additives
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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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The invention discloses a kind of Projecting Lamp two-component silicone sealants, component A and B component including phase independent packaging, and the weight ratio of the component A and B component is (5-10): 1；And in parts by weight, component A includes: 100 parts of hydroxyl-terminated injecting two methyl siloxane, and trimethyl blocks dimethyl silicone polymer 2-10 parts, 80-150 parts of reinforced filling, 10-40 parts of composite flame-retardant agent；In parts by weight, B component includes: that trimethyl blocks dimethyl silicone polymer 30-50 parts, carbon black or 3-10 parts of titanium dioxide, and 10-50 parts of reinforced filling, 5-20 parts of silane crosslinker, 5-20 parts of silane coupling agent, 0.01-3 parts of condensation catalyst of compound collaboration.The invention has the advantages that deep cure speed is more uniform, bonding quality is preferable.
Description
Technical field
The present invention relates to adhering and sealing technical fields, more particularly, to a kind of Projecting Lamp two-component silicone sealant.
Background technique
Organosilicon material has superior weatherability, resistant of high or low temperature, ultra-violet resistance etc. physical compared to other materials
Can, cooperation coupling agent, silicone resin tackifier use, and after surface treatment, it is viscous to can be widely applied for various low pole materials
It connects in fixed.Currently, the organosilicon material as adhering and sealing is mainly one pack system condensation room temperature vulcanized silicone rubber and one pack system
Addition-type Heat Curable Silicone Rubber Compound.Single-component room-temperature vulcanized silicone rubber contacts vulcanized by moisture using easy, special sets without other
It is standby, but its deep cure is slow, and especially winter, slower curing rate constrain its high efficiency, large-scale bonding application；It is single
Component Addition-type Heat Curable Silicone Rubber Compound needs to save under low temperature (0 DEG C -10 DEG C) environment there are poor storage stability, and it is anti-to play bonding
Answer temperature high, 1-2 hour generally at 120-150 DEG C, need in this way and increase heating equipment outside, increase produce utilization at
This, long-term high-temperature baking also has significant effect the service life of adhering and sealing substrate and electronic component.
Summary of the invention
The object of the present invention is to provide a kind of Projecting Lamp two-component silicone sealants, it has easy to operate, deep cure
Speed is fast, has excellent bonding feature to a variety of substrates.
The technical scheme adopted by the invention is that:
A kind of Projecting Lamp two-component silicone sealant, component A and B component including phase independent packaging,
The weight ratio of the component A and B component is (5-10): 1；And
In parts by weight, component A includes:
100 parts of hydroxyl-terminated injecting two methyl siloxane, trimethyl blocks dimethyl silicone polymer 2-10 parts, reinforced filling 80-
150 parts, 10-40 parts of composite flame-retardant agent；
In parts by weight, B component includes:
Trimethyl blocks dimethyl silicone polymer 30-50 parts, carbon black or 3-10 parts of titanium dioxide, and 10-50 parts of reinforced filling,
5-20 parts of silane crosslinker, 5-20 parts of silane coupling agent, 0.01-3 parts of condensation catalyst of compound collaboration.
The hydroxyl-terminated injecting two methyl siloxane hydroxyl-terminated injecting two methyl siloxane I and terminal hydroxy group different by two kinds of viscosity
II interworking of dimethyl silicone polymer forms.
The range of viscosities of the hydroxyl-terminated injecting two methyl siloxane I is 1000-10000mPas, terminal hydroxy group poly dimethyl silicon
The range of viscosities of oxygen alkane II is 30000-50000mPas, and hydroxyl-terminated injecting two methyl siloxane I and terminal hydroxy group poly dimethyl silicon
The weight ratio of oxygen alkane II is 1:(1.5-2).
The reinforced filling includes by the active nano-calcium carbonate of arbitrary proportion, hydrophobic fumed silica, lightweight carbon
Sour calcium, powdered whiting composition.
The composite flame-retardant agent is aluminium hydroxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complexing
Object, nitrogenated flame retardant are constituted, and aluminium hydroxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound, nitrogen
The weight ratio of flame retardant is 4:(1-3): (1-2): (0.2-2): (0.01-2).
The trimethyl sealing end dimethyl silicone polymer range of viscosities is 100~1000mPas.
The silane crosslinker is ethyl orthosilicate, positive silicic acid propyl ester, vinyltrimethoxysilane, methyl trimethoxy oxygroup
Silane, vinyltriethoxysilane, 1,2- bis- (triethoxy silicon substrate) ethane, 1,3- bis- ((triethoxy silicon substrate) ethyls)-
Bis- ((methyl dimethoxy oxygroup silicon substrate) the ethyl) -1,1,3,3- tetramethyl disiloxanes of 1,1,3,3- tetramethyl disiloxane, 1,3-
One of.
The silane coupling agent is aminopropyl triethoxysilane, N- (β-aminoethyl)-γ-aminopropyl trimethoxy silicon
Alkane, urea propyl trimethoxy silicane, Dynasylan 1146, Dynasylan SIVO 203, isocyanates propyl trimethoxy
One of silane, isocyanate propyl triethoxysilane, glycidyl ether oxygen propyl trimethoxy silicane.
The compound collaboration condensation catalyst is compounded using organotitanium, organo aluminum catalyst, organotin catalysts,
Wherein, weight ratio when organotitanium, organo aluminum catalyst, organotin catalysts compounding is 1:(30-50): (20-
50)。
The present invention is made that improvement in following several respects:
1, interworking is carried out using the hydroxyl-terminated injecting two methyl siloxane of different viscosities grade, one can guarantee to have sufficient anti-
Answer crosslinking points, it is ensured that suitable crosslink density provides basis for good mechanical property；Secondly maintain it is good it is extrudability and
Thixotropy is integrally glued upper plastic emitting and receives glue freely, ensures curing rate to a certain extent after allowing component A and B component to mix
Uniform and preferable bonding quality.
2, in reinforced filling, calcium carbonate, the wood powder of active nano-calcium carbonate, silica and lightweight and heavy are introduced,
So that the flexibility, ductility, density of component A is improved, not only ensure the leakproofness of sealant, and keeps component each
Soft, hard, thin, the close combination of the distribution of some materials, during cured, the substance inside component can be with the object of outer layer
Matter has relatively uniform curing rate, reduces and from outward appearance to inner essence carries out cured probability, effectively increases the cured uniformity
And speed, and after solidification, the space of the flexible materials such as wood powder is filled as early as possible by other fillers, enhances air-tightness.
3, compound collaboration condensation catalyst is introduced, one guarantees that B component has good storage stability；Secondly introducing organic
The appearance of titanium catalyst and organo aluminum catalyst, the help that can be provided to the bonding of different substrate materials；It is urged thirdly introducing organotin
Agent further provides for excellent sealing and curing efficiency.And three kinds of catalyst collaborations are used in compounding, especially selected suitable weight
Ratio is measured, plays in curing rate, solidify very big equilibrium in the uniformity.
4, using bi-component as sealant, and relative to common bi-component similar product, reinforced filling is placed in not
With component in, and content is different, it is ensured that each component in independent state ingredient it is uniform, but specifically used
When, the reinforced filling in component A can be supplemented in B component rapidly and as soon as possible, on the basis of increasing air-tightness, further
Accelerate inside and outside curing rate, and the free particle in product can displacement, enhance the instant spy that sealant uses
Property, enhance the air-tightness of product.
To sum up, pass through the optimization of above several respects, it is ensured that the deep cure effect of sealant and have preferably be bonded
Quality.That is, the invention has the advantages that compared with the prior art: deep cure speed is more uniform, and bonding quality is preferable.
Specific embodiment
Embodiment 1
A kind of Projecting Lamp two-component silicone sealant, component A and B component including phase independent packaging, and component A and B group
The weight ratio divided is 5:1.In specific preparation, the preparation including component A and B component.
The preparation of component A are as follows: in parts by weight, take 100 parts of hydroxyl-terminated injecting two methyl siloxane, trimethyl blocks poly- diformazan
2 parts of radical siloxane, 80 parts of reinforced filling, 10 parts of composite flame-retardant agent.Later, by aforementioned component in inert gas shielding, the highest temperature
Degree is no more than in the environment of 0 °, stirs evenly, is fitted into independent sealed package under last inert gas shielding, room temperature state i.e.
It can.Found in specific preparation, after first cold by the way of heat, to product using when air-tightness have certain promotion.
The preparation of B component are as follows: in parts by weight, take trimethyl block 30 parts of dimethyl silicone polymer, 3 parts of carbon black, reinforcement
10 parts of filler, 5 parts of silane crosslinker, 5 parts of silane coupling agent, compound 0.01 part of collaboration condensation catalyst.Later, by aforementioned component
In the environment of inert gas shielding, maximum temperature are no more than 0 °, stir evenly, under last inert gas shielding, room temperature state
It is fitted into independent sealed package.It is found in specific preparation, the gas after first cold by the way of heat, when using product
Close property has certain promotion.
Wherein:
Hydroxyl-terminated injecting two methyl siloxane is by the different hydroxyl-terminated injecting two methyl siloxane I of two kinds of viscosity and terminal hydroxy group poly- two
II interworking of methylsiloxane forms.The range of viscosities of hydroxyl-terminated injecting two methyl siloxane I is 1000mPas, terminal hydroxy group poly dimethyl
The range of viscosities of siloxanes II is 30000mPas, and hydroxyl-terminated injecting two methyl siloxane I and hydroxyl-terminated injecting two methyl siloxane II
Weight ratio be 1:1.5.
Reinforced filling include by the active nano-calcium carbonate of arbitrary proportion, hydrophobic fumed silica, precipitated calcium carbonate,
Powdered whiting, wood powder composition.In the present embodiment, active nano-calcium carbonate, hydrophobic fumed silica, precipitated calcium carbonate,
Powdered whiting, wood powder weight ratio be 4:1:1:2:0.2.Wood powder can select the wood powder of the preparations such as rice husk, bamboo scraps.It is common
Experiment discovery, after the partial size of wood powder is sufficiently small, sealant using when curing rate become slowly, but sealant integral sealing
Property, air-tightness can become good.In general, the partial size of wood powder select 1-1.5 μm (in terms of average grain diameter, and following embodiment phase
Together).
Composite flame-retardant agent is aluminium hydroxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound, nitrogen
Flame retardant is constituted, and aluminium hydroxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound, the resistance of nitrogen system
The weight ratio for firing agent is 4:1:1:0.2:0.01.
It is 100mPas that trimethyl, which blocks dimethyl silicone polymer range of viscosities,.
Silane crosslinker is ethyl orthosilicate.
Silane coupling agent is aminopropyl triethoxysilane.
Compound collaboration condensation catalyst is had using organotitanium, organo aluminum catalyst, organotin catalysts compounding
Weight ratio when machine titanium catalyst, organo aluminum catalyst, organotin catalysts compounding is 1:30:20.Organotitanium is double
(ethyl acetoacetate) metatitanic acid diisobutyl ester, organo aluminum catalyst are two (ethyl acetoacetate) aluminic acid diisopropyl esters, organotin
Catalyst is dibutyl tin dilaurate.
In this way, preparation forms finished product 1.
Embodiment 2
Difference with embodiment 1 is only that:
The weight ratio of component A and B component is 8:1.
In the preparation of component A, in parts by weight, 100 parts of hydroxyl-terminated injecting two methyl siloxane are taken, trimethyl blocks poly- diformazan
5 parts of radical siloxane, 120 parts of reinforced filling, 30 parts of composite flame-retardant agent.
In the preparation of B component, in parts by weight, takes trimethyl to block 40 parts of dimethyl silicone polymer, 5 parts of titanium dioxide, mend
Strong 40 parts of filler, 10 parts of silane crosslinker, 10 parts of silane coupling agent, compound 1 part of collaboration condensation catalyst.
Hydroxyl-terminated injecting two methyl siloxane is by the different hydroxyl-terminated injecting two methyl siloxane I of two kinds of viscosity and terminal hydroxy group poly- two
II interworking of methylsiloxane forms.The range of viscosities of hydroxyl-terminated injecting two methyl siloxane I is 5000mPas, terminal hydroxy group poly dimethyl
The range of viscosities of siloxanes II is 40000mPas, and hydroxyl-terminated injecting two methyl siloxane I and hydroxyl-terminated injecting two methyl siloxane II
Weight ratio be 1:1.8.
In reinforced filling, active nano-calcium carbonate, hydrophobic fumed silica, precipitated calcium carbonate, powdered whiting, wood
The weight ratio of powder is 6:1:1:3:0.1.
In composite flame-retardant agent, aluminium hydroxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound,
The weight ratio of nitrogenated flame retardant is 4:2:1.5:1:1.
It is 500mPas that trimethyl, which blocks dimethyl silicone polymer range of viscosities,.
Silane crosslinker is positive silicic acid propyl ester.
Silane coupling agent is N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane.
Compound collaboration condensation catalyst is had using organotitanium, organo aluminum catalyst, organotin catalysts compounding
Weight ratio when machine titanium catalyst, organo aluminum catalyst, organotin catalysts compounding is 1:40:30.Organotitanium is double
(ethyl acetoacetate) metatitanic acid diisopropyl ester, organotin catalysts are two pungent certain herbaceous plants with big flowers acid stannous methides.
In this way, preparation forms finished product 2.
Embodiment 3
Difference with embodiment 1 is only that:
The weight ratio of component A and B component is 10:1.
In the preparation of component A, in parts by weight, 100 parts of hydroxyl-terminated injecting two methyl siloxane are taken, trimethyl blocks poly- diformazan
10 parts of radical siloxane, 150 parts of reinforced filling, 40 parts of composite flame-retardant agent.
In the preparation of B component, in parts by weight, take trimethyl block 50 parts of dimethyl silicone polymer, 10 parts of carbon black, reinforcement
50 parts of filler, 20 parts of silane crosslinker, 20 parts of silane coupling agent, compound 3 parts of collaboration condensation catalyst.
Hydroxyl-terminated injecting two methyl siloxane is by the different hydroxyl-terminated injecting two methyl siloxane I of two kinds of viscosity and terminal hydroxy group poly- two
II interworking of methylsiloxane forms.The range of viscosities of hydroxyl-terminated injecting two methyl siloxane I is 10000mPas, the poly- diformazan of terminal hydroxy group
The range of viscosities of radical siloxane II is 50000mPas, and hydroxyl-terminated injecting two methyl siloxane I and hydroxyl-terminated injecting two methyl siloxane
II weight ratio is 1:2.
In reinforced filling, active nano-calcium carbonate, hydrophobic fumed silica, precipitated calcium carbonate, powdered whiting, wood
The weight ratio of powder is 8:1:1:5:0.2.
In composite flame-retardant agent, aluminium hydroxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound,
The weight ratio of nitrogenated flame retardant is 4:3:2:2:2.
It is 1000mPas that trimethyl, which blocks dimethyl silicone polymer range of viscosities,.
Silane crosslinker is vinyltrimethoxysilane.
Silane coupling agent is urea propyl trimethoxy silicane.
Compound collaboration condensation catalyst is had using organotitanium, organo aluminum catalyst, organotin catalysts compounding
Weight ratio when machine titanium catalyst, organo aluminum catalyst, organotin catalysts compounding is 1:50:50.Organotitanium is to have
Machine titanium catalyst is bis- (ethyl acetoacetate) metatitanic acid diisobutyl esters, and organotin catalysts are dibutyl tin dilaurate.
In this way, preparation forms finished product 3.
Embodiment 4
Difference with embodiment 1 is only that:
Silane crosslinker is vinyltriethoxysilane, 1,2- bis- (triethoxy silicon substrate) ethane.
Silane coupling agent is Dynasylan 1146, Dynasylan SIVO 203.
Organotitanium is that organotitanium is bis- (ethyl acetoacetate) metatitanic acid diisopropyl esters, organotin catalysts
For two pungent certain herbaceous plants with big flowers acid stannous methides.
In this way, preparation forms finished product 4.
Embodiment 5
Difference with embodiment 2 is only that:
Silane crosslinker is bis- ((triethoxy silicon substrate) the ethyl) -1,1,3,3- tetramethyl disiloxanes of 1,3-.
Silane coupling agent is isocyanate propyl trimethoxysilane.
Organotitanium is poly(tributoxy titanium), and organotin catalysts are di-n-butyl two (levulinic ketone group) tin.
In this way, preparation forms finished product 5.
Embodiment 6
Difference with embodiment 2 is only that:
Silane crosslinker is bis- ((methyl dimethoxy oxygroup silicon substrate) the ethyl) -1,1,3,3- tetramethyl disiloxanes of 1,3-.
Silane coupling agent is isocyanate propyl triethoxysilane.
Organotitanium is tetraisopropyl titanate.
In this way, preparation forms finished product 6.
Embodiment 7
Difference with embodiment 1 is only that:
Silane coupling agent is glycidyl ether oxygen propyl trimethoxy silicane.
In this way, preparation forms finished product 7.
Comparative example 1
The preparation of component A are as follows: in parts by weight, taking viscosity is 100 parts of hydroxyl-terminated injecting two methyl siloxane of 2000mpas,
Trimethyl blocks 10 parts of dimethyl silicone polymer, 80 parts of nanometer calcium carbonate, 50 parts of aluminium hydroxide.Later, by aforementioned component lazy
Property gas shield under be dispersed with stirring uniformly.
The preparation of B component are as follows: in parts by weight, take trimethyl block 30 parts of dimethyl silicone polymer, 3 parts of carbon black, reinforcement
10 parts of filler, 10 parts of ethyl orthosilicate, 5 parts of aminopropyl triethoxysilane, 0.1 part of dibutyl tin dilaurate.
In this way, being contrasted product 1.
Comparative example 2
The preparation of component A are as follows: in parts by weight, taking viscosity is 100 parts of hydroxyl-terminated injecting two methyl siloxane of 5000mpas,
Trimethyl blocks 10 parts of dimethyl silicone polymer, 80 parts of nanometer calcium carbonate, 50 parts of magnesium hydroxide.Later, by aforementioned component lazy
Property gas shield under be dispersed with stirring uniformly.
The preparation of B component are as follows: in parts by weight, take trimethyl block 30 parts of dimethyl silicone polymer, 3 parts of carbon black, reinforcement
10 parts of filler, 10 parts of ethyl orthosilicate, 5 parts of aminopropyl triethoxysilane, 0.1 part of the poly- metatitanic acid tert-butyl ester.
In this way, being contrasted product 2.
Effect example
Using generic way, the product of above embodiments 1-7 and comparative example 1-2 is compared into test.
Performance test
It according to the component A of each embodiment and the use proportion of B component, mixes 1 minute, and compares in Speedmixer equipment
Compared with product 1 and compares product 2 and be directly used in every sealant performance test according to its operation instruction.All samples are being mixed or are being tested
Before, placed 24 hours in 23 DEG C, the environment of 50% relative humidity, and the solidification of all samples also 23 DEG C, it is 50% opposite
It is carried out in the environment of humidity.
Correlated performance is tested according to following method.
Deep cure:
Sealant is injected with a thickness of in 8 millimeters of PE circular die, the condition of 23 DEG C, 50% relative humidity is placed in
Under, sample is taken out after 3 hours, measures the curing depth (depth that test glue has formed elastomer) and hardness of glue respectively
(ASTM D2240), and be compared with the hardness after solidifying 24 hours, 7 days.
Surface drying time:
Using the test method of GB 13477, the surface drying time of sealant is tested.
Operating time:
After sealant is mixed, it is inserted into a spillikin, every stick of 1 minute pumping, until not continuous glue occurs (i.e.
Glue is pulled off), record the time, the as operating time of glue, also referred to as working life.It is not available more than the time glue.
The test of sealant adhesive property:
According to the requirement of ASTM D1002 standard, shearing (Lap Shear) of the sealant between light projector lamp part is tested
Performance.
Sealant hydrothermal aging performance test:
Be cured 8 millimeters of glue samples are put into 85 DEG C, in the constant temperature and humidity ageing oven of 85% relative humidity, test aging
The variation of sealant hardness after 1000 hours.
The curing performance test result of sealant is shown in Table 1.
Table 1:
As can be seen from Table 1, Projecting Lamp two-component silicone sealant relatively product 1 of the invention and for comparing product 2,
Operating time between 10-15min, is unlikely to also to be unlikely to as too long in compared product 2 as compared the shorter of product 1, can
Working efficiency is improved, and meets the requirement of equipment task time.Meanwhile 3 hours curing depths are preferable, be common sealant extremely
It is 2 times few, reflect that it has the preferable solidification uniformity and faster curing rate.And from sealant hardness, also compared with
It is good, meet bonding needs enough.
The adhesive property test of sealant is shown in Table 2 (only testing finished product 1-3 and comparison product 1).
Table 2:
From table 2 it can be seen that the adhesive strength of sealant of the invention is preferable, it can especially be rapidly reached bonding and want
It asks.
The anti-aging property test of sealant is shown in Table 3 (only testing finished product 1-3 and comparison product 1).
Table 3:
From table 3 it can be seen that superiority is extremely bright for the anti-aging property of sealant of the invention is compared to product are compared
It is aobvious.
In conclusion the advantages of Projecting Lamp two-component silicone sealant of the invention is: deep cure speed is more uniform,
Bonding quality is preferable.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations
Equivalent structure or equivalent flow shift made by present specification is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (9)
1. a kind of Projecting Lamp two-component silicone sealant, component A and B component including phase independent packaging, it is characterised in that:
The weight ratio of the component A and B component is (5-10): 1；And
In parts by weight, component A includes:
100 parts of hydroxyl-terminated injecting two methyl siloxane, trimethyl blocks dimethyl silicone polymer 2-10 parts, reinforced filling 80-150
Part, 10-40 parts of composite flame-retardant agent；
In parts by weight, B component includes:
Trimethyl blocks dimethyl silicone polymer 30-50 parts, carbon black or 3-10 parts of titanium dioxide, and 10-50 parts of reinforced filling, silane
5-20 parts of crosslinking agent, 5-20 parts of silane coupling agent, 0.01-3 parts of condensation catalyst of compound collaboration.
2. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the terminal hydroxy group poly dimethyl
Siloxanes is formed by the different hydroxyl-terminated injecting two methyl siloxane I of two kinds of viscosity and II interworking of hydroxyl-terminated injecting two methyl siloxane.
3. Projecting Lamp two-component silicone sealant according to claim 2, it is characterised in that: the terminal hydroxy group poly dimethyl
The range of viscosities of siloxanes I is 1000-10000mPas, and the range of viscosities of hydroxyl-terminated injecting two methyl siloxane II is 30000-
50000mPas, and the weight ratio of hydroxyl-terminated injecting two methyl siloxane I and hydroxyl-terminated injecting two methyl siloxane II is 1:(1.5-
2)。
4. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the reinforced filling include by
Active nano-calcium carbonate, hydrophobic fumed silica, precipitated calcium carbonate, powdered whiting, the wood powder composition of arbitrary proportion.
5. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the composite flame-retardant agent is hydrogen
Aluminium oxide, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound, nitrogenated flame retardant are constituted, and hydroxide
Aluminium, magnesium hydroxide, zinc carbonate, platinum-divinyl tetramethyl disiloxane complex compound, nitrogenated flame retardant weight ratio be 4:(1-
3): (1-2): (0.2-2): (0.01-2).
6. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the trimethyl sealing end poly- two
Methylsiloxane range of viscosities is 100~1000mPas.
7. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the silane crosslinker is positive
Silester, positive silicic acid propyl ester, vinyltrimethoxysilane, methyltrimethoxysilane, vinyltriethoxysilane, 1,
2- bis- (triethoxy silicon substrate) ethane, 1,3- bis- ((triethoxy silicon substrate) ethyl) -1,1,3,3- tetramethyl disiloxanes, 1,3-
One of bis- ((methyl dimethoxy oxygroup silicon substrate) ethyl) -1,1,3,3- tetramethyl disiloxanes.
8. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the silane coupling agent is ammonia
Propyl-triethoxysilicane, N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane, urea propyl trimethoxy silicane,
Dynasylan 1146, Dynasylan SIVO 203, isocyanate propyl trimethoxysilane, three ethoxy of isocyanates propyl
One of base silane, glycidyl ether oxygen propyl trimethoxy silicane.
9. Projecting Lamp two-component silicone sealant according to claim 1, it is characterised in that: the compound collaboration condensation is urged
Agent is using organotitanium, organo aluminum catalyst, organotin catalysts compounding, wherein organotitanium, organo-aluminium are urged
Weight ratio when agent, organotin catalysts compounding is 1:(30-50): (20-50).
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| WO2021133621A1 (en) * | 2019-12-23 | 2021-07-01 | Dow Silicones Corporation | Moisture curable compositions |
| CN115322572A (en) * | 2022-08-11 | 2022-11-11 | 深圳市泰科科技有限公司 | Flame-retardant and fireproof silicon rubber material for cable and preparation method thereof |
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| CN115322572A (en) * | 2022-08-11 | 2022-11-11 | 深圳市泰科科技有限公司 | Flame-retardant and fireproof silicon rubber material for cable and preparation method thereof |
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| CN110257002B (en) | 2021-09-03 |
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