CN107973890A - Block water the preparation method and application of foam - Google Patents
Block water the preparation method and application of foam Download PDFInfo
- Publication number
- CN107973890A CN107973890A CN201711459571.1A CN201711459571A CN107973890A CN 107973890 A CN107973890 A CN 107973890A CN 201711459571 A CN201711459571 A CN 201711459571A CN 107973890 A CN107973890 A CN 107973890A
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- parts
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- blocks water
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
-
- 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
-
- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- 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
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A kind of preparation method and application of the foam that blocks water of foam technical field, prepares high-barrier PET and modified foam foaming colloid respectively, and modified foam foaming colloid is cast on high-barrier PET, obtains the foam that blocks water；Described modification foam foaming colloid is by by 90~110 parts by weight polyether polyol thermal dehydration under vacuum, dehydration polyether polyol is obtained, then heats reaction after being mixed with 30~40 parts by weight MDI, 2~10 parts by weight of carbon nanotubes, 1~2 parts by weight of blowing agent, 0.3~0.8 part by weight of catalyst, 1~5 parts by weight silicone oil and 3~20 parts by weight reactive flame retardants and is made.The present invention sets modified foam on high-barrier PET, integrates impedance, blocks water and the function such as antidetonation.
Description
Technical field
The present invention relates to a kind of technology in foam field, is specifically a kind of preparation method and application for the foam that blocks water.
Background technology
OLED technology is had been widely used in display device at present.Due to the trend of display device slimming, OLED screen
Curtain also does more and more thinner.But there are broken equivalent risk for frivolous OLED mobile phone screens.Therefore in the design, usually use
Foam is attached to the OLED screen curtain back side, to protect screen.On the other hand, waterproof performance requirement of the market for portable display device
Higher and higher, highest waterproofing grade requirement is IPX8.
The foam being applied at present in OLED screen curtain has two kinds, and one kind is PU foams, using hole-opening foaming technology, resiliency
Can be good, but waterproof effect is poor；Another is PO foams, belongs to closed pore foam, the cushion performance of foam is slightly worse, waterproof effect
It is good.Above-mentioned foam can not adapt to new market demands.In addition foam tape is in display device assembling process, and easily absorption is grey
Dirt, therefore to foam also resistive requirement, this is also the place that current foam needs to improve.
The content of the invention
The present invention is directed to deficiencies of the prior art, it is proposed that a kind of preparation method and application for the foam that blocks water,
Modified foam is set on high-barrier PET, integrates impedance, block water and the function such as antidetonation.
The present invention is achieved by the following technical solutions：
The present invention relates to a kind of preparation method for the foam that blocks water, and prepares high-barrier PET and modified foam foaming colloid respectively,
Modified foam foaming colloid is cast on high-barrier PET, obtains the foam that blocks water；
The modification foam foaming colloid is de- by the way that 90~110 parts by weight polyether polyol are heated under vacuum
Water, obtain dehydration polyether polyol, then with 30~40 parts by weight MDI (Diphenyl-methane-diisocyanate, hexichol
Dicyclohexylmethane diisocyanate), 2~10 parts by weight of carbon nanotubes, 1~2 parts by weight of blowing agent, 0.3~0.8 part by weight of catalyst, 1
Heating reaction is made after~5 parts by weight silicone oil and the mixing of 3~20 parts by weight reactive flame retardants.Preferably, 2~10 weights are further included
Measure part carbon nanotubes.
Preferably, in parts by weight, the polyether polyol is 100 parts, and MDI is 35 parts, and carbon nanotubes is 5 parts, foaming
Agent is 1.5 parts, and catalyst is 0.5 part, and silicone oil is 2 parts, and reactive flame retardant is 5 parts.
The high-barrier PET uses intaglio plate roller mode, and by PVDC emulsion coatings to PET, heating, drying is made.
The temperature of the thermal dehydration is 120~150 DEG C, it is preferable that temperature is 130~140 DEG C；Polyether polyols after dehydration
Moisture is less than 0.5% in alcohol, it is preferable that moisture is less than 0.3%.
The molecular weight of the dehydration polyether polyol is 1000, hydroxyl value 110.
Any common foaming agent can be selected in the foaming agent；Preferably, the foaming agent is water.
Preferably, the catalyst is stannous octoate.
Preferably, the reactive flame retardant is bromide fire retardant, is further preferably 2,3- dibromo-propanols.
The temperature that reaction is heated after the mixing is 70~100 DEG C, the reaction time is 5~10min, it is preferable that described
Temperature is 80~90 DEG C.
The present invention relates to a kind of display device foam tape that blocks water, including the foam that blocks water.
PET is bonded on release film by pressure sensitive adhesive in the foam that blocks water；Preferably, the pressure sensitive adhesive passes through slit
Coventry type die head coventry is extrusion coated to block water on foam.
The display device is 0.15~0.7g/cm with the density for the foam tape that blocks water3, block-water performance is 1.5~7g
(m2.24h), impedance behavior 1011~1013.5Ω, 180 ° of peeling forces are 500~1500gf, 25% compression ratio for 0.015~
0.04MPa。
Technique effect
Compared with prior art, the present invention sets modified foam on high-barrier PET, and collection impedance, block water and the work(such as antidetonation
Can be in one.
Embodiment
With reference to embodiment, the present invention will be described in detail.Density uses balance by standard ASTM D3574
Measure, block-water performance is measured by standard GBT 1038-2000 using the instrument that blocks water, and impedance behavior is by standard ASTM D257 using resistance
Anti- instrument measures, and 180 ° of peeling forces are measured by standard GBT-2792-2014 using tensilon, and 25% compression ratio presses standard JIS
K6254 is measured using tensilon.
Embodiment 1
The present embodiment is related to a kind of preparation method for the foam that blocks water, including：
A intaglio plate roller mode) is used, by the PET of PVDC emulsion coatings to 12 μm, 80 DEG C of drying, obtain high-barrier PET；
B the polyether polyol of 100 parts by weight) is heated to 130~140 DEG C of dehydrations under vacuum so that polyethers is more
Moisture is less than 0.3% in first alcohol, obtains dehydration polyether polyol；Again with 35 parts by weight MDI, 5 parts by weight of carbon nanotubes,
1.5 parts by weight water, 0.5 parts by weight of octanoic acid stannous, 2 parts by weight silicone oil and 5 parts by weight 2,3- dibromo-propanols are mixed, are heated to
80 DEG C, 10min is reacted, obtains modified foam foaming colloid；
C) the modified foam colloid that foams is cast on high-barrier PET, 0.1mm is obtained and blocks water foam；
D) on the PET for blocking water foam, by the extrusion coated pressure sensitive adhesive of slit coventry type die head coventry, 10 μm of coating thickness, then it is bonded
Release film, obtains the display device foam tape that blocks water.
The display device is 0.54g/cm with the density for the foam tape that blocks water3, every square metre of 24h block-water performance is
1.5g, impedance behavior 1011.5Ω, 180 ° of peeling forces are 800gf, and 25% compression ratio is 0.015MPa.
Embodiment 2
The present embodiment is related to a kind of preparation method for the foam that blocks water, including：
A intaglio plate roller mode) is used, by the PET of PVDC emulsion coatings to 12 μm, 80 DEG C of drying, obtain high-barrier PET；
B 100 parts by weight polyether polyol) are heated to 130~140 DEG C of dehydrations under vacuum so that polyether polyols
Moisture is less than 0.3% in alcohol, obtains dehydration polyether polyol；Again with 35 parts by weight MDI, 10 parts by weight of carbon nanotubes, 3 weights
Amount part water, 0.5 parts by weight of octanoic acid stannous, 2 parts by weight silicone oil and 2 parts by weight 2,3- dibromo-propanols are mixed, and are heated to 80 DEG C,
10min is reacted, obtains modified foam foaming colloid；
C) the modified foam colloid that foams is cast on high-barrier PET, 0.1mm is obtained and blocks water foam；
D) on the PET for blocking water foam, by the extrusion coated pressure sensitive adhesive of slit coventry type die head coventry, 10 μm of coating thickness, then it is bonded
Release film, obtains the display device foam tape that blocks water.
The display device is 0.35g/cm with the density for the foam tape that blocks water3, every square metre of 24h block-water performance is 7g,
Impedance behavior is 1013.5Ω, 180 ° of peeling forces are 800gf, and 25% compression ratio is 0.015MPa.
It is emphasized that：It the above is only presently preferred embodiments of the present invention, not the present invention made in any form
Limitation, every any simple modification, equivalent change and modification for being made to above example of technical spirit according to the present invention,
In the range of still falling within technical solution of the present invention.
Claims (10)
- A kind of 1. preparation method for the foam that blocks water, it is characterised in that high-barrier PET and modified foam foaming colloid are prepared respectively, Modified foam foaming colloid is cast on high-barrier PET, obtains the foam that blocks water；Described modification foam foaming colloid by by 90~110 parts by weight polyether polyol thermal dehydration under vacuum, Obtain dehydration polyether polyol, then with 30~40 parts by weight MDI, 1~2 parts by weight of blowing agent, 0.3~0.8 part by weight of catalyst, Heating reaction is made after 1~5 parts by weight silicone oil and the mixing of 3~20 parts by weight reactive flame retardants.
- 2. the preparation method of the foam according to claim 1 that blocks water, it is characterized in that, modification foam foaming colloid leads to Cross 90~110 parts by weight polyether polyol thermal dehydration under vacuum, obtain dehydration polyether polyol, then with 30~40 Parts by weight MDI, 1~2 parts by weight of blowing agent, 0.3~0.8 part by weight of catalyst, 2~10 parts by weight of carbon nanotubes, 1~5 weight Heating reaction is made after part silicone oil and the mixing of 3~20 parts by weight reactive flame retardants.
- 3. the preparation method of the foam according to claim 2 that blocks water, it is characterized in that, in parts by weight, the polyether polyols Alcohol is 100 parts, and MDI is 35 parts, and carbon nanotubes is 5 parts, and foaming agent is 1.5 parts, and catalyst is 0.5 part, and silicone oil is 2 parts, reaction Type fire retardant is 5 parts.
- 4. the preparation method of the foam according to claim 1 that blocks water, it is characterized in that, the temperature of the thermal dehydration is 120 ~150 DEG C, it is preferable that temperature is 130~140 DEG C；Moisture is less than 0.5% in polyether polyol after dehydration, it is preferable that water Content is divided to be less than 0.3%.
- 5. the preparation method of the foam according to claim 3 that blocks water, it is characterized in that, the molecule of the dehydration polyether polyol Measure as 1000, hydroxyl value 110.
- 6. the preparation method of the foam according to claim 2 that blocks water, it is characterized in that, the reactive flame retardant is bromine system Fire retardant, it is preferable that the bromide fire retardant is 2,3- dibromo-propanols.
- 7. the preparation method of the foam according to claim 1 that blocks water, it is characterized in that, the high-barrier PET uses intaglio plate Roller mode, by PVDC emulsion coatings to PET, heating, drying is made.
- 8. the preparation method of the foam according to claim 1 that blocks water, it is characterized in that, the temperature of reaction is heated after the mixing It is 5~10min for 70~100 DEG C, reaction time, it is preferable that the temperature is 80~90 DEG C.
- 9. a kind of display device foam tape that blocks water, it is characterised in that including the bubble that blocks water described in any of the above-described claim Cotton.
- 10. the display device foam tape that blocks water according to claim 9, it is characterized in that, the display device is with blocking water The density of foam tape is 0.15~0.7g/cm3, block-water performance is 1.5~7g (m2.24h), impedance behavior 1011~1013.5 Ω, 180 ° of peeling forces are 500~1500gf, and 25% compression ratio is 0.015~0.04MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711459571.1A CN107973890A (en) | 2017-12-28 | 2017-12-28 | Block water the preparation method and application of foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711459571.1A CN107973890A (en) | 2017-12-28 | 2017-12-28 | Block water the preparation method and application of foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107973890A true CN107973890A (en) | 2018-05-01 |
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ID=62008200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711459571.1A Pending CN107973890A (en) | 2017-12-28 | 2017-12-28 | Block water the preparation method and application of foam |
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| Country | Link |
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| CN (1) | CN107973890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111148012A (en) * | 2019-12-02 | 2020-05-12 | 苏州市新广益电子有限公司 | Conductive foam for loudspeaker and electronic terminal equipment and production process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104263264A (en) * | 2014-08-13 | 2015-01-07 | 隆昌羽玺新材料科技有限公司 | Novel thermally-bonded double-sided tape and making and use methods thereof |
| CN104987702A (en) * | 2015-06-29 | 2015-10-21 | 青岛海信电器股份有限公司 | Polyurethane foam and preparation method thereof |
| CN106008876A (en) * | 2016-06-17 | 2016-10-12 | 嘉兴中易碳素科技有限公司 | Preparation method of slow-rebound polyurethane foam |
-
2017
- 2017-12-28 CN CN201711459571.1A patent/CN107973890A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104263264A (en) * | 2014-08-13 | 2015-01-07 | 隆昌羽玺新材料科技有限公司 | Novel thermally-bonded double-sided tape and making and use methods thereof |
| CN104987702A (en) * | 2015-06-29 | 2015-10-21 | 青岛海信电器股份有限公司 | Polyurethane foam and preparation method thereof |
| CN106008876A (en) * | 2016-06-17 | 2016-10-12 | 嘉兴中易碳素科技有限公司 | Preparation method of slow-rebound polyurethane foam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111148012A (en) * | 2019-12-02 | 2020-05-12 | 苏州市新广益电子有限公司 | Conductive foam for loudspeaker and electronic terminal equipment and production process thereof |
| CN111148012B (en) * | 2019-12-02 | 2020-12-29 | 苏州市新广益电子有限公司 | Conductive foam for loudspeaker and electronic terminal equipment and production process 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180501 |