CN105273681B - Modified inorganic Nano filling, additional organosilicon adhesive and preparation method thereof - Google Patents

Modified inorganic Nano filling, additional organosilicon adhesive and preparation method thereof Download PDF

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CN105273681B
CN105273681B CN201510811570.3A CN201510811570A CN105273681B CN 105273681 B CN105273681 B CN 105273681B CN 201510811570 A CN201510811570 A CN 201510811570A CN 105273681 B CN105273681 B CN 105273681B
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preparation
nano
adhesive
inorganic nano
modified inorganic
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CN105273681A (en
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付子恩
陈建军
刘光华
黄恒超
黄文哲
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Guangzhou Baiyun Technology Co ltd
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Guangzhou Baiyun Chemical Industry Co Ltd
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Abstract

The present invention discloses a kind of modified inorganic Nano filling, additional organosilicon adhesive and preparation method thereof, and for the modified inorganic Nano filling by 100 parts of inorganic nanoparticles, 5~15 parts of silane coupling agents and 1~3 part of organic acid are modified and obtain;The adhesive is blended by modified inorganic Nano filling and add-on type base rubber refining glue and is obtained.After the present invention using silane coupling agent and organic acid to inorganic nano-filler by being ground modification, it is added in add-on type liquid silicon rubber, modified inorganic Nano filling plays the role of viscosifying reinforcement and heat conduction simultaneously, the additional organosilicon adhesive prepared has excellent adhesive strength to the basis materials such as PCB, aluminium, copper-clad plate, PBT, PET, while having good thermal conductivity and excellent ageing-resistant performance.Preparation method of the invention is convenient and simple, Efficient Adhesive Promotion is apparent, and environmental pollution is small, can meet heat conduction encapsulation and the bonding requirements of electronic apparatus well.

Description

Modified inorganic Nano filling, additional organosilicon adhesive and preparation method thereof
Technical field
The invention belongs to adhesive technical fields, specifically, the present invention relates to a kind of modified inorganic Nano filling, additions Type organosilicon adhesive and preparation method thereof.
Background technology
With the development of electronic apparatus technology, the ageing-resistant performance of the gluing agent material applied to the field is required more next It is higher.Compare traditional epoxy resin, polyurethane and polyacrylate material, additional organosilicon material has excellent resistance to Warm aging, ultraviolet light and aging and thermal shock performance, it is believed that be that the traditional adhesive of substitution is answered extensively in field of electronics Material.
Certainly, that there are still thermal conductivitys is relatively low, substrate bonding performance is weak, mechanical strength is poor etc. asks for additional organosilicon adhesive Topic needs to go specifically to solve in application field.For the relatively low problem with mechanical strength difference of thermal conductivity, typically to liquid silicon Heat conduction reinforced filling is added in rubber to go to solve;And the solution of adhesive property difference can be summarized as primary coat method and tackifier Method.
Primary coat method as first paints one layer of chemical substance in substrate surface, and then above, gluing is bonded again, the party Method the shortcomings of there are environmental pollution is larger and complex operation;Also may be used in most cases by adding tackifier into adhesive To solve the problems, such as bonding, but the techniques such as synthesis for being related to tackifier, environmental pollution and finished product can all cause one cost etc. Fixed influence, at the same it is weaker with respect to primary coat method by the adhesive strength of tackifier method progress tackified finish.
Invention content
Based on this, in order to overcome the defect of the above-mentioned prior art, the present invention provides a kind of modified inorganic Nano filling, add It is molded organic silica gel and sticks agent and preparation method thereof.
In order to achieve the above-mentioned object of the invention, this invention takes following technical schemes:
A kind of modified inorganic Nano filling is by 100 parts of inorganic nanoparticles, 5~15 parts of silane coupling agents and 1~3 Part organic acid is modified and obtains.
In wherein some embodiments, the inorganic nanoparticles are nano zine oxide, nano aluminium oxide, nano-titanium oxide One or more of with nano aluminum nitride, the initial particle size of the nano particle of the inorganic nano-filler is 30~ 150nm。
In wherein some embodiments, the silane coupling agent is γ-glycidyl ether oxygen propyl of mass ratio 0.1~10 Trimethoxy silane KH560 and γ-methacryloxypropyl trimethoxy silane KH570.
In wherein some embodiments, the silane coupling agent is mass ratio 1:1 γ-glycidyl ether oxygen propyl front three Oxysilane KH560 and γ-methacryloxypropyl trimethoxy silane KH570.
In wherein some embodiments, the organic acid is one or more of oxalic acid, salicylic acid and tartaric acid.
The present invention also provides the preparation methods of above-mentioned modified inorganic Nano filling, take following technical scheme:
A kind of preparation method of modified inorganic Nano filling, includes the following steps:By 100 parts of inorganic nanoparticles, 5~15 Part silane coupling agent and 1~3 part of organic acid carry out physical blending, then obtain modified inorganic nanometer into line program milled processed and fill out Material, described program milled processed are:300r/min grinds 30min, and 500r/min grinds 10min, and 1000r/min grinds 5min, 2000r/min grinds 3min.
The present invention also provides a kind of additional organosilicon adhesives, take following technical scheme:
A kind of additional organosilicon adhesive, the adhesive are refined by above-mentioned modified inorganic Nano filling and add-on type base rubber Glue is blended and obtains, and additive amount of the modified inorganic Nano filling in the adhesive is 12~34wt%.
In wherein some embodiments, additive amount of the modified inorganic Nano filling in the adhesive is 34wt%.With the increase of modified inorganic Nano filling additive amount, curing adhesive gradually increases the adhesive strength of base material, when When modified inorganic Nano filling additive amount reaches 12wt%, the adhesive strength of curing adhesive and base material is rendered as cohesional failure, Additive amount of the modified inorganic Nano filling in add-on type silica gel in the present invention is at maximum up to 34wt%, to aluminium and PCB Maximum adhesive strength respectively reaches 1.8MPa and 2.06MPa, and wherein additive amount is preferably 34wt%.
In wherein some embodiments, the ingredient of the add-on type base rubber is vinyl polysiloxane or hydrogeneous poly- silica Alkane, 0.05~0.15mmoles/g of contents of ethylene of the vinyl polysiloxane, the hydrogen content of the hydrogen containing siloxane Viscosity for 0.15~3.2mmoles/g, the add-on type base rubber is 500~10000mPa.s.
The present invention also provides the preparation methods of above-mentioned additional organosilicon adhesive, take following technical scheme:
A kind of preparation method of additional organosilicon adhesive, includes the following steps:By modified inorganic Nano filling and add Be molded base rubber carry out refining glue be blended to get;Additive amount of the modified inorganic Nano filling in the adhesive be 12~ 34wt%.
Compared with prior art, the invention has the advantages that:
(1), after the present invention using silane coupling agent and organic acid to inorganic nano-filler by being ground modification, It is added in add-on type liquid silicon rubber, modified inorganic Nano filling plays the role of viscosifying reinforcement and heat conduction simultaneously, prepares Additional organosilicon adhesive to the basis materials such as PCB, aluminium, copper-clad plate, PBT, PET have excellent adhesive strength, together When with good thermal conductivity and excellent ageing-resistant performance.
(2), the preparation method of modified inorganic Nano filling of the invention and additional organosilicon adhesive is convenient and simple, increases Viscous with obvious effects, environmental pollution is small, can meet heat conduction encapsulation and the bonding requirements of electronic apparatus well.
Specific implementation mode
Below by specific embodiment, the present invention will be described in detail, but the far super implementation of application range that the present invention is included Example.Unless otherwise specified, the raw material used in following embodiment derives from commercially available.
The preparation of 1 modified nano zinc oxide of embodiment
The method of modifying of the present embodiment includes the following steps:
(1), it presses following weight percentage and prepares raw material:Nano zine oxide (grain size 49nm) 2006.78g, KH560100.07g, KH570100.18g, oxalic acid 10.03g, tartaric acid 30.06g, physical mixed;
(2), it is into line program milled processed, Program milled processed technique in high-speed grinder by above-mentioned raw materials: 300r/min grinds 30min, and 500r/min grinds 10min, and 1000r/min grinds 5min;2000r/min grinds 3min, grinding After obtain modified nano zinc oxide.
The preparation of 2 modified Nano alundum (Al2O3) of embodiment
The method of modifying of the present embodiment includes the following steps:
(1), it presses following weight percentage and prepares raw material:Nano-aluminium oxide (grain size 58nm) 2000.07g, KH560100.12g, KH570100.06g, oxalic acid 10.05g, tartaric acid 30.08g, physical mixed;
(2), it is into line program milled processed, Program milled processed technique in high-speed grinder by above-mentioned raw materials: 300r/min grinds 30min, and 500r/min grinds 10min, and 1000r/min grinds 5min;2000r/min grinds 3min, grinding After obtain modified Nano alundum (Al2O3).
The preparation of 3 modified Nano titanium oxide of embodiment
The method of modifying of the present embodiment includes the following steps:
(1), it presses following weight percentage and prepares raw material:Nano-titanium oxide (grain size 43nm) 2002.34g, KH560100.05g, KH57019.98g, oxalic acid 10.12g, tartaric acid 30.09g, physical mixed;
(2), it is into line program milled processed, Program milled processed technique in high-speed grinder by above-mentioned raw materials: 300r/min grinds 30min, and 500r/min grinds 10min, and 1000r/min grinds 5min;2000r/min grinds 3min, grinding After obtain modified Nano titanium oxide.
The preparation of 4 modified Nano aluminium nitride of embodiment
The method of modifying of the present embodiment includes the following steps:
(1), it presses following weight percentage and prepares raw material:Nano aluminum nitride (grain size 37nm) 2000.34g, KH560100.06g, KH570100.19g, oxalic acid 10.05g, salicylic acid 29.65g, physical mixed;
(2), it is into line program milled processed, Program milled processed technique in high-speed grinder by above-mentioned raw materials: 300r/min grinds 30min, and 500r/min grinds 10min, and 1000r/min grinds 5min;2000r/min grinds 3min, grinding After obtain modified Nano aluminium nitride.
Following example 5~8 are the preparation of additional organosilicon adhesive.
5 cementability additional organosilicon adhesive of embodiment (additive amount of unmodified inorganic nano-filler is 12wt%)
Take 4 parts of 1000g vinyl polysiloxanes (contents of ethylene 0.06mmoles/g), 40g containing hydrogen silicone oil (hydrogen contents 1.8mmoles/g) be used as add-on type base rubber, respectively with the unmodified nano zine oxides of 142g, the unmodified nano aluminium oxides of 142g, The unmodified nano-titanium oxides of 142g and the unmodified nano aluminum nitride blendings of 142g respectively obtain organosilicon adhesive A, B, C, D.
6 cementability additional organosilicon adhesive of embodiment (additive amount of modified inorganic Nano filling is 12wt%)
Take 4 parts of 1000g vinyl polysiloxanes (contents of ethylene 0.06mmoles/g), 40g containing hydrogen silicone oil (hydrogen contents It 1.8mmoles/g) is used as base rubber, respectively with 142g modified nano zinc oxides (embodiment 1), 142g modified nano-aluminas are (in fact Apply example 2), 142g modified Nanos titanium oxide (embodiment 3) and 142g modified Nanos aluminium nitride (embodiment 4) blending have respectively obtained Machine silicon adhesive A1, B1, C1, D1.
7 cementability additional organosilicon adhesive of embodiment (additive amount of modified inorganic Nano filling is 21wt%)
Take 4 parts of 1000g vinyl polysiloxanes (contents of ethylene 0.06mmoles/g), 40g containing hydrogen silicone oil (hydrogen contents It 1.8mmoles/g) is used as base rubber, respectively with 276g modified nano zinc oxides (embodiment 1), 276g modified nano-aluminas are (in fact Apply example 2), 276g modified Nanos titanium oxide (embodiment 3) and 276g modified Nanos aluminium nitride (embodiment 4) blending have respectively obtained Machine silicon adhesive A2, B2, C2, D2.
8 cementability additional organosilicon adhesive of embodiment (additive amount of modified inorganic Nano filling is 34wt%)
Take 4 parts of 1000g vinyl polysiloxanes (contents of ethylene 0.06mmoles/g), 40g containing hydrogen silicone oil (hydrogen contents It 1.8mmoles/g) is used as base rubber, respectively with 535g modified nano zinc oxides (embodiment 1), 535g modified nano-aluminas are (in fact Apply example 2), 535g modified Nanos titanium oxide (embodiment 3) and 535g modified Nanos aluminium nitride (example 4) are blended and obtain organosilicon respectively Adhesive A3, B3, C3, D3.
The performance test of the cementability additional organosilicon adhesive of test example embodiment 5~8
Test method is as follows:
(1), prepared by adhesive:The organosilicon adhesive for taking appropriate embodiment 5~8 to prepare adds 5ppm platinums and urges respectively Agent and 1% vinyl ring body inhibitor blending and stirring are uniformly used as adhesive afterwards.
(2), prepared by tensile shear batten:It is bonding sample to select the base material of 125mm × 25mm × 2mm;Applying adhesion type Before adhesive, first clean substrate surface with ethyl alcohol (metal material is first polished with sand paper, is then cleaned up with ethyl alcohol).In base material After bonding plane coats adhesion type adhesive, then 2 pieces of testing substrates adhesive surfaces close up it and gently pressurize, makes to bond interplanar distance From for 1mm, bond area is 25 × 25mm2.It is aluminium and PCB to select base material.The adhesive adhesive shear strength of the present invention Solidification temperature is 150 DEG C, hardening time 10min.Table 1 be various adhesives to the tensile shear strength of aluminium and pcb board, lead Yellowing-resistant ageing properties at heating rate and 150 DEG C.
Performance measurement of the 1 each cementability additional organosilicon adhesive of table to aluminium and pcb board
As it can be seen from table 1 after modified inorganic Nano filling is added, add-on type adhesive and base material aluminium sheet and pcb board The intensity of tensile shear strength inorganic nano-filler more unmodified than addition, which is compared, to be obviously improved, and intensity is with modified filler The increase of amount and increase, when the additive amount of modified inorganic Nano filling is in 12~34wt%, tensile shear strength is stronger, and works as When the additive amount of modified inorganic Nano filling is 34%, tensile shear strength is most strong.Thermal conductivity with modified filler amount increase It is increased slightly, adding modified filler and unmodified filler influences less yellowing-resistant ageing properties at 150 DEG C.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (6)

1. a kind of preparation method of additional organosilicon adhesive, which is characterized in that include the following steps:By modified inorganic nanometer Filler and add-on type base rubber carry out refining glue be blended to get, wherein the preparation method of the modified inorganic Nano filling includes following Step:By 100 parts of inorganic nanoparticles, 5~15 parts of silane coupling agents and 1~3 part of organic acid carry out physical blending, then carry out Program milled processed obtains modified inorganic Nano filling, and described program milled processed is:300r/min grinds 30min, 500r/ Min grinds 10min, and 1000r/min grinds 5min, and 2000r/min grinds 3min;
Additive amount of the modified inorganic Nano filling in the adhesive is 12~34wt%;
The organic acid is one or more of oxalic acid, salicylic acid and tartaric acid.
2. the preparation method of additional organosilicon adhesive according to claim 1, which is characterized in that the modified inorganic Additive amount of the Nano filling in the adhesive is 34wt%.
3. the preparation method of additional organosilicon adhesive according to claim 1 or 2, which is characterized in that the addition The ingredient of type base rubber is vinyl polysiloxane and hydrogen containing siloxane, the contents of ethylene 0.05 of the vinyl polysiloxane The hydrogen content of~0.15mmoles/g, the hydrogen containing siloxane are 0.15~3.2mmoles/g, and the add-on type base rubber is glued Degree is 500~10000mPa.s.
4. the preparation method of additional organosilicon adhesive according to claim 1 or 2, which is characterized in that described inorganic Nano particle is one or more of nano zine oxide, nano aluminium oxide, nano-titanium oxide and nano aluminum nitride, described inorganic The initial particle size of the nano particle of Nano filling is 30~150nm.
5. the preparation method of additional organosilicon adhesive according to claim 1 or 2, which is characterized in that the silane Coupling agent is the γ-glycidyl ether oxygen propyl trimethoxy silicane and γ-methacryloxypropyl of mass ratio 0.1~10 Trimethoxy silane.
6. the preparation method of additional organosilicon adhesive according to claim 5, which is characterized in that described silane coupled Agent is mass ratio 1:1 γ-glycidyl ether oxygen propyl trimethoxy silicane and γ-methacryloxypropyl trimethoxy Silane.
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CN108084742A (en) * 2017-11-22 2018-05-29 纳琳威纳米科技南通有限公司 A kind of preparation method and purposes of the high heat conduction aluminium nitride dispersion liquid that insulate
CN109777346A (en) * 2019-01-28 2019-05-21 江西省航宇新材料股份有限公司 A kind of copper-clad plate heat-conducting glue and its production technology

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Address after: No. 1 Yun'an Road, Guangzhou Private Science and Technology Park, Baiyun District, Guangzhou City, Guangdong Province, 510000

Patentee after: Guangzhou Baiyun Technology Co.,Ltd.

Address before: No. 1 Yun'an Road, Guangzhou Private Science and Technology Park, Baiyun District, Guangzhou City, Guangdong Province, 510000

Patentee before: GUANGZHOU BAIYUN CHEMICAL INDUSTRY Co.,Ltd.