CN106811165A - A kind of high performance polyurethane fluid sealant - Google Patents
A kind of high performance polyurethane fluid sealant Download PDFInfo
- Publication number
- CN106811165A CN106811165A CN201611244798.XA CN201611244798A CN106811165A CN 106811165 A CN106811165 A CN 106811165A CN 201611244798 A CN201611244798 A CN 201611244798A CN 106811165 A CN106811165 A CN 106811165A
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- CN
- China
- Prior art keywords
- fluid sealant
- high performance
- performance polyurethane
- parts
- polyurethane fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- 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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- 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
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of high performance polyurethane fluid sealant, mixed by following components：Base polyurethane prepolymer for use as, filler, reinforcing agent, catalyst.Polyurethane sealant of the invention has good storage stability and thixotropic property, and combination property is good.Meanwhile, present invention additionally comprises following component：The mixture of sodium bicarbonate particle and carbon dust, and the particle diameter of the mixture is less than 0.1mm.When the fluid sealant is just packed into position to be sealed, fluid sealant is heated to more than 50 DEG C by the hot blast blown out by hair-dryer, and heating is stopped after continuing 30S.The present invention provides a kind of novel seal gum for possessing good heat radiating function.
Description
Technical field
The present invention relates to fluid sealant field, and in particular to a kind of high performance polyurethane fluid sealant.
Background technology
Polyurethane has good cementability, resistant to chemical etching, heat-resisting, low temperature resistant and mechanical and physical performance etc., used as viscous
Connect and be widely used in construction material with elaxtic seal.
Fumed silica has particle diameter small, the feature such as specific surface area is big, with its superior stability, it is reinforcing, increase
Thick thixotropy and be used widely in many industrial circles such as rubber, coating, fluid sealant.However, inside aerosil
Polysiloxane structure and outer surface exist activated silica alcohol radical absorption water and preparation process cause in itself its surface occur acid
Area, makes white carbon show hydrophily, is difficult to infiltrate in organic phase and disperses.
Meanwhile, existing fluid sealant is used primarily in electronic component, and electronic component is often in the work shape of high temperature
State, when the heat dispersion of fluid sealant is not good, can cause electronic component to be failed because local heating is too high, damaged, and existing
Fluid sealant in technology often only serve sealing and fixation, not only can not heat conduction well, also because of its thermal insulation more not
Beneficial to radiating；Therefore, existing fluid sealant how is improved, preferable heat dispersion is reached, is this area urgent need to resolve
Technical barrier.
The content of the invention
1. the invention technical problem to be solved
Present invention aim at, there is provided a kind of high performance polyurethane sealant.
2. technical scheme
The technical solution adopted in the present invention is：
A kind of high performance polyurethane fluid sealant, is mixed by weight percentage by following components：
Base polyurethane prepolymer for use as 60-75 parts
Filler 20-30 parts
Reinforcing agent 2-7 parts
Catalyst 1-3 parts.
One of preferably, described filler is talcum powder.
One of preferably, described reinforcing agent is modified manometer silicon dioxide.
One of preferably, the preparation method of described modified manometer silicon dioxide is as follows：
（1）Nano silicons of the 6g through overactivation is weighed, 12mL silane couplers are drawn, is scattered in toluene, ultrasonic disperse
12min；
（2）Intensification is heated to reflux, and reacts 3 .5h, and after cooling, centrifugation goes out sediment, washing precipitate for several times after, drying is
Obtain modified manometer silicon dioxide.
One of preferably, described toluene is removed water through 3A molecular sieves.
Further, also including following component：The mixture of sodium bicarbonate particle and carbon dust, and the particle diameter of the mixture is small
In 0.1mm.
Further, when the fluid sealant is just packed into position to be sealed, the hot blast blown out by hair-dryer is by fluid sealant
More than 50 DEG C are heated to, heating is stopped after continuing 30S.
3. beneficial effect
The present invention is relative to the beneficial effect of prior art：Polyurethane sealant of the invention, by the modified nanometer of addition
Used as reinforcing agent, polyurethane sealant has lower 100% modulus and elongation higher to silica, what addition 3% was modified
Silica, 100% modulus of fluid sealant, tensile strength and elongation at break difference 0.72MPa-1.62 MPa and 650%.This hair
Bright polyurethane sealant has good storage stability and thixotropic property, and combination property is good.
Specific embodiment
Embodiment 1：
A kind of high performance polyurethane fluid sealant, is mixed by weight percentage by following components：
65 parts of base polyurethane prepolymer for use as
28 parts of talcum powder
5 parts of modified manometer silicon dioxide
2 parts of catalyst.
The preparation method of wherein above-mentioned modified manometer silicon dioxide is as follows：
（1）Nano silicons of the 6g through overactivation is weighed, 12mL silane couplers are drawn, is scattered in toluene, ultrasonic disperse
12min；
（2）Intensification is heated to reflux, and reacts 3 .5h, and after cooling, centrifugation goes out sediment, washing precipitate for several times after, drying is
Obtain modified manometer silicon dioxide.
Wherein above-mentioned toluene is removed water through 3A molecular sieves.
Embodiment 2：
A kind of high performance polyurethane fluid sealant, is mixed by weight percentage by following components：
70 parts of base polyurethane prepolymer for use as
22 parts of talcum powder
7 parts of modified manometer silicon dioxide
1 part of catalyst.
The preparation method of wherein above-mentioned modified manometer silicon dioxide is as follows：
（1）Nano silicons of the 6g through overactivation is weighed, 12mL silane couplers are drawn, is scattered in toluene, ultrasonic disperse
12min；
（2）Intensification is heated to reflux, and reacts 3 .5h, and after cooling, centrifugation goes out sediment, washing precipitate for several times after, drying is
Obtain modified manometer silicon dioxide.
Wherein above-mentioned toluene is removed water through 3A molecular sieves.
Meanwhile, in the present embodiment, also including following component：The mixture of sodium bicarbonate particle and carbon dust, and the mixture
Particle diameter be less than 0.1mm.When the fluid sealant is just packed into position to be sealed, the hot blast blown out by hair-dryer is added fluid sealant
Heat stops heating to more than 50 DEG C after continuing 30S.Because solid sodium bicarbonate starts gradually to decompose generation dioxy more than 50 DEG C
Change carbon, generation of the carbon dioxide inside fluid sealant causes that fluid sealant is internally formed porous small ventilating structure, be conducive to close
The heat convection of sealing（Because above-mentioned ventilating structure is small, considerable influence can't be formed to the watertightness performance of fluid sealant）；Together
When, while fluid sealant internal porous ventilating structure is formed, a part of carbon dust can automatically be packed into the hole inside fluid sealant
In, toner passage is formed, so as to be internally formed the heat conduction via based on toner passage in fluid sealant, be conducive to fluid sealant
Heat transfer.By the addition of sodium bicarbonate particle above and toner mixture, the radiating mould inside fluid sealant can be effectively improved
Formula, significantly improves the radiating effect of fluid sealant, so as to provide a kind of novel seal gum for possessing good heat radiating function.（The present invention
It is directed to Application No.：The patent of CN 201610215774.5 is further improved）
Better embodiment of the invention is illustrated above, but the invention is not limited to the embodiment,
Those of ordinary skill in the art can also make a variety of equivalent modifications or replacements on the premise of without prejudice to spirit of the invention, this
A little equivalent modifications or replacement are all contained in the application claim limited range.
Claims (7)
1. a kind of high performance polyurethane fluid sealant, it is characterised in that mixed by weight percentage by following components：
Base polyurethane prepolymer for use as 60-75 parts
Filler 20-30 parts
Reinforcing agent 2-7 parts
Catalyst 1-3 parts.
2. high performance polyurethane fluid sealant according to claim 1, it is characterised in that described filler is talcum powder.
3. high performance polyurethane fluid sealant according to claim 1, it is characterised in that described reinforcing agent is modified Nano
Silica.
4. high performance polyurethane fluid sealant according to claim 3, it is characterised in that described modified manometer silicon dioxide
Preparation method it is as follows：
（1）Nano silicons of the 6g through overactivation is weighed, 12mL silane couplers are drawn, is scattered in toluene, ultrasonic disperse
12min；
（2）Intensification is heated to reflux, and reacts 3.5h, and after cooling, centrifugation goes out sediment, washing precipitate for several times after, drying is
Obtain modified manometer silicon dioxide.
5. high performance polyurethane fluid sealant according to claim 4, it is characterised in that described toluene is through 3A molecular sieves
Water removal.
6. the high performance polyurethane fluid sealant according to claim 1, it is characterised in that also including following component：Bicarbonate
The mixture of sodium particle and carbon dust, and the particle diameter of the mixture is less than 0.1mm.
7. the high performance polyurethane fluid sealant according to claim 6, it is characterised in that：Treated when the fluid sealant is just packed into
During sealing station, fluid sealant is heated to more than 50 DEG C by the hot blast blown out by hair-dryer, and heating is stopped after continuing 30S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244798.XA CN106811165A (en) | 2016-12-29 | 2016-12-29 | A kind of high performance polyurethane fluid sealant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244798.XA CN106811165A (en) | 2016-12-29 | 2016-12-29 | A kind of high performance polyurethane fluid sealant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106811165A true CN106811165A (en) | 2017-06-09 |
Family
ID=59110472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611244798.XA Pending CN106811165A (en) | 2016-12-29 | 2016-12-29 | A kind of high performance polyurethane fluid sealant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106811165A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812280A (en) * | 2010-04-09 | 2010-08-25 | 连云港昭华科技有限公司 | Environment-friendly heat conduction insulating glue used by high-power LEDs and preparation method |
| CN104371648A (en) * | 2014-09-28 | 2015-02-25 | 苏州长盛机电有限公司 | Preparation method of graphene modified friction material |
| CN105602510A (en) * | 2016-04-09 | 2016-05-25 | 佛山市恒学科技服务有限公司 | High-performance polyurethane sealant |
| CN106221633A (en) * | 2016-08-19 | 2016-12-14 | 四川海英电子科技有限公司 | A kind of hole conductive glue and preparation method thereof |
-
2016
- 2016-12-29 CN CN201611244798.XA patent/CN106811165A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812280A (en) * | 2010-04-09 | 2010-08-25 | 连云港昭华科技有限公司 | Environment-friendly heat conduction insulating glue used by high-power LEDs and preparation method |
| CN104371648A (en) * | 2014-09-28 | 2015-02-25 | 苏州长盛机电有限公司 | Preparation method of graphene modified friction material |
| CN105602510A (en) * | 2016-04-09 | 2016-05-25 | 佛山市恒学科技服务有限公司 | High-performance polyurethane sealant |
| CN106221633A (en) * | 2016-08-19 | 2016-12-14 | 四川海英电子科技有限公司 | A kind of hole conductive glue and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |
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| RJ01 | Rejection of invention patent application after publication |