CN104449546B - Environment-friendly type LED light fixture joint sealant and preparation method thereof - Google Patents
Environment-friendly type LED light fixture joint sealant and preparation method thereof Download PDFInfo
- Publication number
- CN104449546B CN104449546B CN201410664829.1A CN201410664829A CN104449546B CN 104449546 B CN104449546 B CN 104449546B CN 201410664829 A CN201410664829 A CN 201410664829A CN 104449546 B CN104449546 B CN 104449546B
- Authority
- CN
- China
- Prior art keywords
- deaeration
- preparation
- catalyst
- led light
- light fixture
- 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.)
- Active
Links
Landscapes
- Sealing Material Composition (AREA)
Abstract
A kind of environment-friendly type LED light fixture joint sealant and preparation method thereof.The present invention is base glue with (α, ω) dialkyl polydimethylsiloxane, adds filler, deaeration, adds crosslinking agent, deaeration after being down to room temperature；It is subsequently adding catalyst, deaeration, prepare environment-friendly type LED light fixture joint sealant.Used catalyst of the present invention is organosilicon titanium complex, and its structural formula is: Ti [O (C3H6O)m(C2H4O)nH]a[(OSi(CH3)2)hOSi(CH3)3](4‑a), wherein, 3 >=a >=0 and be integer, 1000 ＞ m, n, h ＞ 50.The fluid sealant preparing has the features such as corrosion-free, yellowing resistance good, caking property is excellent.
Description
Technical field
The invention belongs to fluid sealant technical field, be specifically related to a kind of corrosion-free, yellowing resistance good, caking property
Excellent fluid sealant, for the adhering and sealing of LED lamp lampshade and pedestal.
Background technology
Single-component dealcoholization-type room temperature vulcanized silicone rubber for electron trade is most for de-ethanol in the market
Type, minority is piptonychia alcohol type.De-ethanol-type used catalyst is for such as diethylin MTES etc.
High activity aminated compounds or organic tin catalyst.In aminated compounds amino in use aoxidize flavescence and
Corrosion can be produced；Organic tin catalyst (dibutyl tin laurate, stannous octoate etc.) itself is toxic,
Can release organic acid in using solidification process, organic acid can occur xanthochromia and produce corrosion to base material.
From 2009, in EC regulations REACH clearly propose prohibit the use of dibutyl tin and dioctyl tin and
Three replacement tin compounds.Piptonychia alcohol type used catalyst in the market is most for double (ethyl acetoacetate)
This is several alone for metatitanic acid diisopropyl ester, two (levulinic ketone group) metatitanic acid diisopropyl ester, organic tin catalyst
Or collocation uses.Owing to ethyl acetoacetate and acetylacetone,2,4-pentanedione at high temperature easily turn yellow, at the double (acetyl of synthesis
Ethyl acetate) metatitanic acid diisopropyl ester and the catalyst obtaining during two (levulinic ketone group) metatitanic acid diisopropyl ester many
Number is bronzing and yellow liquid, and ethyl acetoacetate or acetylacetone,2,4-pentanedione are released in solidification when being used as RTV catalyst
Thus cause fluid sealant surface to turn to be yellow；During in addition, they are used as catalyst, the reason that due to this body structure,
Still need to add other amine silane couplers increasing its caking property to material, thus cause its xanthochromia and
Corrosion problems increases the weight of.
And it is used alone titanate esters as catalyst and without amine silane coupler, organic tin catalyst,
Not groups such as amino-contained, ethyl acetoacetate, acetylacetone,2,4-pentanedione in system, this type of fluid sealant is not reported.
Content of the invention
For the technical deficiency of existing single-component dealcoholization-type room temperature vulcanized silicone rubber, it is an object of the invention to provide
A kind of fluid sealant being mainly used in LED lamp lampshade and the adhering and sealing of pedestal.The fluid sealant of the present invention is without corruption
Erosion, color inhibition, caking property are excellent.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of environment-friendly type LED light fixture joint sealant, material component is based on following mass parts:
As optimal technical scheme, environment-friendly type LED light fixture joint sealant of the present invention, described (α,
The dynamic viscosity of ω)-dialkyl polydimethylsiloxane is 500～500000cps, for example, 550cps, 1000
cps、5000cps、8000cps、15000cps、50000cps、80000cps、200000cps、450000
Cps etc..The fluid sealant that (α, ω)-dialkyl polydimethylsiloxane in above-mentioned range of viscosities prepares has
Preferable toughness, extrudability, hardness.
As optimal technical scheme, environment-friendly type LED light fixture joint sealant of the present invention, described filler
For any one in calcium carbonate, titanium dioxide, white carbon, zinc oxide, silicon powder or two or more
Combination.
As optimal technical scheme, environment-friendly type LED light fixture joint sealant of the present invention, described crosslinking
Agent is methyl silicate, MTMS, vinyltrimethoxy silane, dodecyl trimethoxy
In base silane, phenyltrimethoxysila,e, allyltrimethoxysilanis any one or two or more
Combination.
As optimal technical scheme, environment-friendly type LED light fixture joint sealant of the present invention, described catalysis
Agent is titanate catalyst, its structural formula such as following formula (1):
Ti[O(C3H6O)m(C2H4O)nH]a[(OSi(CH3)2)hOSi(CH3)3](4-a) (1)
Wherein, 3 >=a >=0 and be integer, 1000 ＞ m, n, h ＞ 50.
Titaniferous condensed type catalyst above-mentioned in the present invention can use following preparation method, comprises the steps:
1) pre-treatment: be passed through inert gas in tetraisopropyl titanate；
2) prepare mixture: PPG is mixed with hydroxy silicon oil, prepares mixture；
3) react: described mixture is added drop-wise to described tetraisopropyl titanate reacts；
4) post-process: reacted lower-molecular substance is removed, obtains titaniferous condensed type catalyst.
The catalyst of the present invention is prepared from by tetraisopropyl titanate, PPG and hydroxy silicon oil, wherein
The Si-O key containing in hydroxy silicon oil has effect and the increase catalyst of Ti-key in stable tetraisopropyl titanate
Effect with siloxanes compatibility；The introducing of PPG so that described catalyst water absorbing capacity strengthens,
So that the ability to cure of described catalyst significantly improves.
Described lower-molecular substance is isopropanol.
Step 1) described inert gas be passed through the time for more than 30min.Described inert gas be nitrogen and
/ or helium.
The mass ratio of described tetraisopropyl titanate and described mixture is 1:2-10, as 1:3,1:4,1:5,1:6,
1:7,1:8 or 1:9 etc..
Step 3) described reaction is by step 2) described mixture is added drop-wise in described tetraisopropyl titanate, choosing
Mode with dropping so that react more uniform, stable；The reaction time of described reaction is 0.5-6h, as 1h,
2h, 3h, 4h, 4.5h, 5h or 5.5h etc.；The temperature of described reaction be not higher than 80 DEG C, as 10 DEG C, 20 DEG C,
25 DEG C, 30 DEG C, 40 DEG C, 45 DEG C, 50 DEG C, 60 DEG C, 70 DEG C or 75 DEG C etc., preferably 60 DEG C.
Step 2) described PPG is arbitrary with the mol ratio of hydroxy silicon oil, preferably 1:1-3, as
1:1.2,1:1.5,1:1.8,1:2,1:2.3,1:2.5,1:2.8 or 1:2.9 etc..Described reaction system will be to gather
Based on siloxanes, the catalyst and the polysiloxanes that so prepare can similar compatibility, improve at polysiloxanes
Solubility.
The weight average molecular weight of described PPG is 300-800, as the 350th, the 400th, the 450th, the 500th, the 600th,
650th, 700 or 750 etc., the weight average molecular weight of described hydroxy silicon oil is 200-600, as the 250th, the 300th, the 350th,
380th, the 400th, the 450th, 500 or 550 etc..Consider for reactivity and catalysis activity, select as mentioned above
The PPG of molecular weight and hydroxy silicon oil: if the molecular weight of PPG and hydroxy silicon oil is smaller,
The catalyst of preparation is unstable；Molecular weight is bigger, and the catalyst activity preparing is bad, catalysis
Speed is too slow.
Preferably, described PPG weight average molecular weight is the polyether Glycols of 500, as
HO(C2H4O)8(C3H6O)8H；Described hydroxy silicon oil weight average molecular weight is 500, such as HO ((CH3)2SiO)7H。
Step 4) described removing lower-molecular substance device be chemical industry common equipment.Described removal temperature is the highest not
More than 80 DEG C, such as 10 DEG C, 20 DEG C, 25 DEG C, 30 DEG C, 40 DEG C, 45 DEG C, 50 DEG C, 60 DEG C, 70 DEG C or 75 DEG C.
Described removing lower-molecular substance proceeds to flow out without low molecule, and the time does not limits.
Titaniferous condensed type catalyst above-mentioned in the present invention also can use other any suitable method systems
Standby.
An object of the present invention also resides in a kind of environment-friendly type LED light fixture joint sealant of the present invention
Preparation method, comprises the following steps:
(1) in (α, ω)-dialkyl polydimethylsiloxane, filler being added power mixer according to quantity,
The lower deaeration of heating；
(2) crosslinking agent, deaeration are added after being down to room temperature；
(3) it is subsequently adding catalyst, deaeration, obtain described fluid sealant.
As optimal technical scheme, the preparation method of the present invention, the temperature of the described heating of step (1) is 120 DEG C
～200 DEG C.
Preferably, described deaeration is-0.15-0.03MPa in vacuum, carries out under preferably-0.08MPa stirring
3～10 hours.
As optimal technical scheme, the preparation method of the present invention, the described deaeration of step (2) in vacuum is
Carry out 10～60 minutes under-0.15-0.03MPa, preferably-0.08MPa stirring.
As optimal technical scheme, the preparation method of the present invention, the described deaeration of step (3) in vacuum is
Carry out 10～120 minutes under-0.15-0.03MPa, preferably-0.08MPa stirring.
As optimal technical scheme, the preparation method of the present invention, comprise the steps:
(1) power is added to mix according to quantity (α, ω)-dialkyl polydimethylsiloxane, plasticizer, filler
In conjunction machine, under the conditions of temperature 120 DEG C～200 DEG C, vacuum-0.08MPa, stir deaeration 3～10 hours；
(2) add crosslinking agent after being down to room temperature, under vacuum-0.08MPa, stir deaeration 30 minutes；
(3) it is subsequently adding catalyst, stir deaeration 30～60 minutes under vacuum；Discharging, packaging.
Used catalyst of the present invention has without corruption for self-control organosilicon titanium complex, the fluid sealant that the present invention prepares
The features such as erosion, yellowing resistance is good, caking property is excellent.
Detailed description of the invention
For the present invention is better described, it is simple to understand technical scheme, the typical case of the present invention but non-limit
The embodiment of property processed is as follows:
Embodiment 1:
A kind of environment-friendly type LED light fixture joint sealant, material component is based on following mass parts:
And adopt and prepare with the following method:
(1) in (α, ω)-dialkyl polydimethylsiloxane, filler being added power mixer according to quantity,
Deaeration 3～10 hours is stirred under the conditions of temperature 200 DEG C, vacuum-0.08MPa；
(2) add crosslinking agent after being down to room temperature, under vacuum-0.08MPa, stir deaeration 30 minutes；
(3) it is subsequently adding catalyst, stir deaeration 60 minutes under vacuum and get final product.
Embodiment 2
A kind of environment-friendly type LED light fixture joint sealant, material component is based on following mass parts:
And adopt and prepare with the following method:
(1) in (α, ω)-dialkyl polydimethylsiloxane, filler being added power mixer according to quantity,
Deaeration 3 hours is stirred under the conditions of temperature 120 DEG C, vacuum-0.03MPa；
(2) add crosslinking agent after being down to room temperature, under vacuum-0.12MPa, stir deaeration 10 minutes；
(3) it is subsequently adding catalyst, stir deaeration 10 minutes under vacuum and get final product.
Embodiment 3
A kind of environment-friendly type LED light fixture joint sealant, material component is based on following mass parts:
And adopt and prepare with the following method:
(1) in (α, ω)-dialkyl polydimethylsiloxane, filler being added power mixer according to quantity,
Deaeration 10 hours is stirred under the conditions of temperature 160 DEG C, vacuum-0.14MPa；
(2) add crosslinking agent after being down to room temperature, under vacuum-0.03MPa, stir deaeration 30 minutes；
(3) it is subsequently adding catalyst, stir deaeration 60 minutes under vacuum and get final product.
The fluid sealant that embodiment 1-3 prepares is carried out performance test, and testing result is shown in Table 1.
Table 1
From the results shown in Table 1, the environment-friendly type LED light fixture joint sealant caking property that prepared by the present invention
Good, anti-yellowing property is excellent, it is adaptable to the adhering and sealing of LED lamp.
Applicant states, the present invention illustrates the method detailed of the present invention by above-described embodiment, but the present invention
It is not limited to above-mentioned method detailed, i.e. do not mean that the present invention has to rely on above-mentioned method detailed and could implement.
Person of ordinary skill in the field is it will be clearly understood that any improvement in the present invention, each former to product of the present invention
The interpolation of the equivalence replacement of material and auxiliary element, concrete way choice etc., all fall within the protection model of the present invention
Within the scope of enclosing and disclosing.
Claims (5)
1. an environment-friendly type LED light fixture joint sealant, material component is based on following mass parts:
The dynamic viscosity of described (α, ω)-dialkyl polydimethylsiloxane is 500～8000cps；
Described filler be titanium dioxide, white carbon, zinc oxide, any one or two kinds in silicon powder with
On combination；
Described crosslinking agent be methyl silicate, MTMS, vinyltrimethoxy silane, ten
Any one in dialkyl group trimethoxy silane, phenyltrimethoxysila,e, allyltrimethoxysilanis
Or two or more combinations；
Described catalyst is titanate catalyst, its structure such as formula (1):
Ti[O(C3H6O)m(C2H4O)nH]a[(OSi(CH3)2)hOSi(CH3)3](4-a) (1)
Wherein, 3 >=a >=0 and be integer, 1000 ＞ m, n, h ＞ 50.
2. a preparation method for the environment-friendly type LED light fixture joint sealant described in claim 1, including
Following steps:
(1) in (α, ω)-dialkyl polydimethylsiloxane, filler being added power mixer according to quantity,
The lower deaeration of heating；
(2) crosslinking agent, deaeration are added after being down to room temperature；
(3) it is subsequently adding catalyst, deaeration, obtain described fluid sealant.
3. preparation method according to claim 2, it is characterised in that the described heating of step (1)
Temperature is 120 DEG C～200 DEG C.
4. preparation method according to claim 2, it is characterised in that the described deaeration of step (2) exists
Vacuum is stirring 10～60 minutes under the conditions of-0.15-0.03MPa.
5. preparation method according to claim 2, it is characterised in that comprise the steps:
(1) in (α, ω)-dialkyl polydimethylsiloxane, filler being added power mixer according to quantity,
Deaeration 3～10 hours is stirred under the conditions of temperature 120 DEG C～200 DEG C, vacuum-0.08MPa；
(2) add crosslinking agent after being down to room temperature, under vacuum-0.08MPa, stir deaeration 30 minutes；
(3) it is subsequently adding catalyst, stir deaeration 30～60 minutes under vacuum；Discharging, packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664829.1A CN104449546B (en) | 2014-11-19 | 2014-11-19 | Environment-friendly type LED light fixture joint sealant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664829.1A CN104449546B (en) | 2014-11-19 | 2014-11-19 | Environment-friendly type LED light fixture joint sealant and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104449546A CN104449546A (en) | 2015-03-25 |
| CN104449546B true CN104449546B (en) | 2016-10-05 |
Family
ID=52896313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664829.1A Active CN104449546B (en) | 2014-11-19 | 2014-11-19 | Environment-friendly type LED light fixture joint sealant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104449546B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860861A (en) * | 2016-05-06 | 2016-08-17 | 烟台图文马克化工科技有限公司 | Silicone sealant for hanging wallboard |
| CN113185546B (en) * | 2021-04-28 | 2022-07-29 | 广州市白云化工实业有限公司 | High-activity catalyst for dealcoholized silicone sealant and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146208A (en) * | 2011-01-26 | 2011-08-10 | 广州市高士实业有限公司 | Method for preparing transparent dealcoholized single-component room temperature vulcanized silicone rubber |
| CN102757647A (en) * | 2012-07-11 | 2012-10-31 | 东莞兆舜有机硅新材料科技有限公司 | Single-component catalytic dealcoholized room temperature vulcanized (RTV) silicone rubber and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103951980B (en) * | 2013-09-18 | 2017-02-08 | 烟台德邦科技有限公司 | Wet-heat dual curing silicone composition |
-
2014
- 2014-11-19 CN CN201410664829.1A patent/CN104449546B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146208A (en) * | 2011-01-26 | 2011-08-10 | 广州市高士实业有限公司 | Method for preparing transparent dealcoholized single-component room temperature vulcanized silicone rubber |
| CN102757647A (en) * | 2012-07-11 | 2012-10-31 | 东莞兆舜有机硅新材料科技有限公司 | Single-component catalytic dealcoholized room temperature vulcanized (RTV) silicone rubber and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104449546A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110003842B (en) | Single-component dealcoholized room temperature vulcanized organopolysiloxane composition | |
| CN104031389B (en) | Moisture-proof heat type room temperature silicon sulfide rubber composition | |
| CN104673180B (en) | Condensed type double-component silicone sealant and preparation method thereof | |
| CN101942201B (en) | Room-temperature vulcanized antiflaming single-component dealcoholization-type silicone rubber sealant and preparation method thereof | |
| CN103436216B (en) | Dealcoholized organosilicone sealant with low modulus and high elongation percentage and preparation method thereof | |
| CN102040840A (en) | Single-component room temperature vulcanized silicone rubber and preparation method thereof | |
| CN103396759B (en) | A kind of desulfuration chimney inner wall anti-corrosive organic silicon adhesive and method for formulating thereof | |
| CN102643549B (en) | Dealcoholized flame-retardant silicone sealant and preparation method thereof | |
| CN106190012B (en) | A kind of transparent high-intensitive Self-leveling piptonychia alcohol type single-component organic silicon glue and preparation method thereof | |
| CN104277759B (en) | Aging-resisting type solar photovoltaic assembly encapsulant and preparation method thereof | |
| CN101580688A (en) | Dual-component silicone sealant formula used for construction and preparation thereof | |
| CN106833478A (en) | A kind of high-performance refractory type double-component silane modified polyether seal glue and preparation method | |
| CN113337122B (en) | Dealcoholized room-temperature cured silicone rubber with ultra-long storage period and preparation method thereof | |
| CN104004357A (en) | Transparent, fast-cured and thixotropic dealcoholization one-component silicone rubber | |
| CN107523257A (en) | A kind of cold curing demulsification acetoacetic ester type silicone sealant | |
| CN103865474A (en) | Preparation method of transparent pasty alcohol type organosilicone sealant | |
| WO2014077100A1 (en) | Room-temperature-curable polyorganosiloxane composition | |
| CN110240888A (en) | A kind of thermally conductive Silica hydrogel of two-component condensed type and preparation method thereof | |
| CN109593510A (en) | Alkoxy end-capped organosilicon polymer, preparation method and single-component de-alcoholized organosilicon sealant | |
| CN102532917A (en) | High-temperature resisting liquid silicon rubber and preparation method thereof | |
| CN103044920A (en) | One-component room temperature vulcanized and methyl alcohol-removed silicon rubber of starting-resistant engine oil and preparation method of rubber | |
| CN103408938B (en) | A kind of addition type liquid silicone rubber compound used for manufacturing pad printing rubber head and preparation method thereof | |
| CN105086925A (en) | Novel environment-friendly flame-retardant silicone sealant and preparation method thereof | |
| CN104449546B (en) | Environment-friendly type LED light fixture joint sealant and preparation method thereof | |
| CN105585998B (en) | One-component titanate esters halogen-free flame-retardant organosilicon sealant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Two street 523233 Guangdong province Dongguan City Chudo Zhen Dong Bo Cun Da Xin Wei Lu Daxin Road No. 1 Applicant after: Dongguan million Shun's organosilicon Science and Technology Co., Ltd. Address before: Two street 523233 Guangdong province Dongguan City Chudo Zhen Dong Bo Cun Da Xin Wei Lu Daxin Road No. 1 Applicant before: Dongguan Zhaoshun Organosilicon New Material Technology Co., Ltd . |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: DONGGUAN ZHAOSHUN ORGANOSILICON NEW MATERIAL TECHNOLOGY CO., LTD . TO: DONGGUAN MEGASUN SILICONE TECHNOLOGY CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Two street 523233 Guangdong province Dongguan City Chudo Zhen Dong Bo Cun Da Xin Wei Lu Daxin Road No. 1 Patentee after: Zhaoshun Technology (Guangdong) Co., Ltd Address before: Two street 523233 Guangdong province Dongguan City Chudo Zhen Dong Bo Cun Da Xin Wei Lu Daxin Road No. 1 Patentee before: Dongguan million Shun's organosilicon Science and Technology Co., Ltd. |