CN102153983B - Adhesive for cable shielding film and preparation method thereof - Google Patents
Adhesive for cable shielding film and preparation method thereof Download PDFInfo
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- CN102153983B CN102153983B CN 201110027432 CN201110027432A CN102153983B CN 102153983 B CN102153983 B CN 102153983B CN 201110027432 CN201110027432 CN 201110027432 CN 201110027432 A CN201110027432 A CN 201110027432A CN 102153983 B CN102153983 B CN 102153983B
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Abstract
The invention discloses an adhesive for a cable shielding film and a preparation method thereof and belongs to the field of adhesive manufacture. The adhesive is synthesized by using polyester polyol, toluene diisocynate, an organic solvent and gamma-epoxy propoxy propyl triethoxysilane as the raw materials through performing a synthetic reaction on the raw materials and has solid content of 65 percent to 75 percent, viscosity of 2,000mPas to 3,500mPas and hydroxyl value of 10 to 20mgKOH/g, wherein the polyester polyol is prepared by using adipic acid, diethylene glycol, isophthalic acid, propanediol and trimethylolpropane as the raw materials through primary esterification, secondary esterification and condensation polymerization. The adhesive product has excellent flexibility and extensibility. Trimethylolpropane tri-functionality micromolecule alcohol is induced into the adhesive product. Due to the curing process, a polyurethane chain segment has higher crosslinking degree. The adhesive has the characteristics that the composite fastness is high, and no aluminium breaking and cracking phenomena is generated when the adhesive is stretched. The shielding effect of the cable shielding film is ensured.
Description
Technical field
The invention belongs to technical field of adhesive, particularly relate to a kind of adhesive for cable shielding film and preparation method thereof.
Background technology
Along with the increase of power system capacity and improving constantly of automatization level; the second set of power system has now used the protector of integrated circuit type or microcomputer type widely, and the application of these protectors plays a key effect to improving the Systems balanth operation.But also put forward some new problems accordingly.Such as because microcomputer protecting device is all to be made of electronic component, micro-chip etc., belong to weak current equipment, and this protector to operate under high-tension environment when using, this problem of anti-electromagnetic interference just occurred how coming.And the impact of former conventional electromagnetic type protector is subjected to that this high pressure produces electromagnetism aspect is with regard to less.
Therefore in high voltage substation; be useful on and connect electric current, voltage and the direct current tripping operation etc. of introducing the watch-keeping cubicle relay protection device by switch yard and all may introduce interfering voltage to the secondary circuits based on the relaying of microelectronic device by switch yard, the control cables (being commonly referred to as shielding cable) with screen layer all should be adopted in these application scenarios.Therefore, adopt shielding cable for suppressing electromagnetic interference in high voltage substation at present, how proper grounding to reducing external electromagnetic field to the interference level of the second sets such as microcomputer type protection equipment, plays an important role its screen layer.
The present invention is in preparation cable shielding film adhesive specially process, glycol ether and armorphous 1 is introduced in the flexible polyester unit, 2 propylene glycol segments, make the polyurethane product of preparation have splendid snappiness and ductility, introduce simultaneously trimethylolpropane tris functionality small molecular alcohol, give the urethane segment higher degree of crosslinking in solidification process, have higher compound fastness.
And be used at present the tackiness agent of shielding cable screened film, and because glue-line ductility, snappiness are not good, easily make cable shielding film after bonding have stretching easy fracture, and the phenomenon such as be full of cracks, can't guarantee the problem of the shielding effect of cable shielding film.
Summary of the invention
The purpose of embodiment of the present invention is to provide a kind of adhesive for cable shielding film and preparation method thereof, has higher compound fastness, with cable shielding film be bonded in exist on shielding cable after, stretch not easy fracture, the phenomenons such as be full of cracks can not appear, can effectively guarantee the shielding effect of cable shielding film.
The objective of the invention is to be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of adhesive for cable shielding film, this tackiness agent is take polyester polyol, tolylene diisocyanate, organic solvent, γ-glycidoxy propyl-triethoxysilicane as raw material, and each raw material carries out that solid content synthetic after building-up reactions is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g;
Wherein, described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, the polyester polyol of making after an esterification, secondary esterification and polycondensation.
Each raw material consumption of described tackiness agent is by weight percentage:
Polyester polyol 60～70%, tolylene diisocyanate 2～6%, organic solvent 25～35%, γ-glycidoxy propyl-triethoxysilicane 0.3～0.8%.
After described each raw material reaction, synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are that the tackiness agent of 10～20mgKOH/g comprises:
With polyester polyol, tolylene diisocyanate, organic solvent reacted 3～4 hours under 70～90 ℃ of conditions, added γ-glycidoxy propyl-triethoxysilicane, and making solid content is 65%～75%, viscosity is 2000mPas～3500mPas, and hydroxyl value is the tackiness agent of 10～20mgKOH/g.
Described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, and the polyester polyol of making after an esterification, secondary esterification and polycondensation specifically comprises:
An esterification: hexanodioic acid, glycol ether are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 2～3 hours;
Secondary esterification: m-phthalic acid, 1,2 propylene glycol, TriMethylolPropane(TMP) are joined in described polyester synthesis reactor after an above-mentioned esterification, be warming up to 210～230 ℃, reacted 5～6 hours; Complete the secondary esterification, the acid number≤20mgKOH/g of secondary esterification after product;
Polycondensation: to taking out rough vacuum in the described polyester synthesis reactor after above-mentioned secondary esterification, vacuum tightness is from-0.02Mpa to-0.04Mpa, and every 30 minutes raisings-0.005Mpa take out to stop hanging down after 2～3 hours rough vacuum time and vacuumize, and put overhead product;
Continue pumping high vacuum to taking out in the described polyester synthesis reactor after rough vacuum, vacuum tightness is from-0.05Mpa to-0.09Mpa, every 30 minutes raising-0.007Mpa, and the pumping high vacuum time is 2.5～3.5 hours, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum is complete, vacuumize growing in described polyester synthesis reactor, vacuum tightness will reach-0.094Mpa, and the long pumpdown time is 6～8 hours, and pure overhead product accounts for 2～8% of each raw material gross weight of preparation polyester polyol;
After long vacuumizing, make that rotary viscosity is that 6000～10000mPas, hydroxyl value are that 45～55mgKOH/g, acid esters are the polyester polyol of 0.1～2mgKOH/g at 60 ℃ of temperature.
Organic solvent in the raw material of described tackiness agent adopts any in toluene, vinyl acetic monomer, ritalin, butanone, acetone.
Each raw material consumption of described polyester polyol is by weight percentage:
Hexanodioic acid 25～35%, glycol ether 30～40%, m-phthalic acid 15～25%, 1,2 propylene glycol 15～25%, TriMethylolPropane(TMP) 2～5%.
Embodiment of the present invention also provides a kind of preparation method of adhesive for cable shielding film, comprising:
Take polyester polyol, tolylene diisocyanate, organic solvent, γ-glycidoxy propyl-triethoxysilicane as raw material; Wherein, described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, the polyester polyol of making after an esterification, secondary esterification and polycondensation;
Make above-mentioned each raw material carry out after building-up reactions that synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g, namely obtain adhesive for cable shielding film.
Described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, and the polyester polyol of making after an esterification, secondary esterification and polycondensation comprises:
Each raw material consumption is by mass percentage: hexanodioic acid 25～35%, glycol ether 30～40%, m-phthalic acid 15～25%, 1,2 propylene glycol 15～25%, TriMethylolPropane(TMP) 2～5%;
An esterification: the hexanodioic acid in above-mentioned raw materials, glycol ether are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 2～3 hours;
Secondary esterification: the m-phthalic acid in above-mentioned raw materials, 1,2 propylene glycol, TriMethylolPropane(TMP) are joined in described polyester synthesis reactor after an above-mentioned esterification, be warming up to 210～230 ℃, reacted 5～6 hours; Complete the secondary esterification, the acid number≤20mgKOH/g of secondary esterification after product;
Polycondensation: to taking out rough vacuum in the described polyester synthesis reactor after above-mentioned secondary esterification, vacuum tightness is from-0.02Mpa to-0.04Mpa, and every 30 minutes raisings-0.005Mpa take out to stop hanging down after 2～3 hours rough vacuum time and vacuumize, and put overhead product;
Continue pumping high vacuum to taking out in the described polyester synthesis reactor after rough vacuum, vacuum tightness is from-0.05Mpa to-0.09Mpa, every 30 minutes raising-0.007Mpa, and the pumping high vacuum time is 2.5～3.5 hours, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum is complete, vacuumize growing in described polyester synthesis reactor, vacuum tightness will reach-0.094Mpa, and the long pumpdown time is 6～8 hours, and pure overhead product accounts for 2～8% of each raw material gross weight of preparation polyester polyol;
After long vacuumizing, make that rotary viscosity is that 6000～10000mPas, hydroxyl value are that 45～55mgKOH/g, acid esters are the polyester polyol of 0.1～2mgKOH/g at 60 ℃ of temperature.
In a described esterif iotacation step, keep aquifer yield be stabilized in per hour water outlet be in esterif iotacation step raw materials used gross weight 0.5～1.0%.
Describedly make above-mentioned each raw material carry out after building-up reactions that synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g, namely make adhesive for cable shielding film and comprise:
Each raw material consumption is by mass percentage: polyester polyol 60～70%, tolylene diisocyanate 2～6%, organic solvent 25～35%, γ-glycidoxy propyl-triethoxysilicane 0.3～0.8%;
With polyester polyol, tolylene diisocyanate, organic solvent reacted 3～4 hours under 70～90 ℃ of conditions, added γ-glycidoxy propyl-triethoxysilicane, and making solid content is 65%～75%, viscosity is 2000mPas～3500mPas, and hydroxyl value is the tackiness agent of 10～20mgKOH/g.
Can be found out by the technical scheme that the invention described above embodiment provides, embodiment of the present invention is in preparation adhesive for cable shielding film process, make the polyester polyol introducing glycol ether and armorphous 1 with flexible polyester unit, 2 propylene glycol segments, make polyurethane binder product of preparation have splendid snappiness and ductility, introduce simultaneously trimethylolpropane tris functionality small molecular alcohol, give the urethane segment higher degree of crosslinking in solidification process, have higher compound fastness.This tackiness agent is used in bonding cable shielding film in shielding cable, make the cable shielding film of the shielding cable of preparing have the continuous aluminium of stretching, without crack performance, effectively guaranteed the shielding effect of cable shielding film.
Embodiment
Below in conjunction with embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that obtains under the creative work prerequisite.
The below will be described in further detail the embodiment of the present invention.
Embodiment 1
The present embodiment provides a kind of adhesive for cable shielding film, the cable shielding film that is used for bonding shielding cable, this tackiness agent is take by weight percentage polyester polyol 60～70%, tolylene diisocyanate 2～6%, organic solvent 25～35%, γ-glycidoxy propyl-triethoxysilicane 0.3～0.8% as raw material, and after each raw material reaction, synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g; Specifically with polyester polyol, tolylene diisocyanate, organic solvent reacted 3～4 hours under 70～90 ℃ of conditions, add γ-glycidoxy propyl-triethoxysilicane, making solid content is 65%～75%, viscosity is 2000mPas～3500 mPas, and hydroxyl value is the tackiness agent of 10～20mgKOH/g.
Wherein, described polyester polyol is hexanodioic acid 25～35%, glycol ether 30～40%, the m-phthalic acid 15～25%, 1 with by weight percentage, 2 propylene glycol 15～25%, TriMethylolPropane(TMP) 2～5% are raw material, the polyester polyol of making after an esterification, secondary esterification and polycondensation.Specifically make this polyester polyol by following step, comprising:
An esterification: hexanodioic acid, glycol ether are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 2～3 hours;
Secondary esterification: m-phthalic acid, 1,2 propylene glycol, TriMethylolPropane(TMP) are joined in described polyester synthesis reactor after an above-mentioned esterification, be warming up to 210～230 ℃, reacted 5～6 hours; Complete the secondary esterification, the acid number≤20mgKOH/g of secondary esterification after product;
Polycondensation: to taking out rough vacuum in the described polyester synthesis reactor after above-mentioned secondary esterification, vacuum tightness is from-0.02Mpa to-0.04Mpa, and every 30 minutes raisings-0.005Mpa take out to stop hanging down after 2～3 hours rough vacuum time and vacuumize, and put overhead product;
Continue pumping high vacuum to taking out in the described polyester synthesis reactor after rough vacuum, vacuum tightness is from-0.05Mpa to-0.09Mpa, every 30 minutes raising-0.007Mpa, and the pumping high vacuum time is 2.5～3.5 hours, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum is complete, vacuumize growing in described polyester synthesis reactor, vacuum tightness will reach-0.094Mpa, and the long pumpdown time is 6～8 hours, and pure overhead product accounts for 2～8% of each raw material gross weight of preparation polyester polyol;
After long vacuumizing, make that rotary viscosity is that 6000～10000mPas, hydroxyl value are that 45～55mgKOH/g, acid esters are the polyester polyol of 0.1～2mgKOH/g at 60 ℃ of temperature.
Organic solvent in the raw material of above-mentioned tackiness agent can adopt any in toluene, vinyl acetic monomer, ritalin, butanone, acetone.
The preparation method of above-mentioned adhesive for cable shielding film specifically comprises:
(1) synthesizing polyester polyvalent alcohol (in this step, the consumption of each raw material used is all by mass percentage):
An esterification: the hexanodioic acid with 25～35%, 30～40% glycol ether join in the polyester synthesis reactor, are warming up to 210～230 ℃, react 2～3 hours.Keep aquifer yield stable (account for the raw materials used gross weight 0.5～1.0% of an esterification/per hour), distillate water 6.2～8.6%;
Secondary esterification: with the m-phthalic acid, 15～25%1 of 15～25% mass parts, 2 propylene glycol, 2～5% TriMethylolPropane(TMP)s join the described polyester synthesis reactor after a described esterification, described polyester synthesis reactor is warming up to 210～230 ℃, reacted 5～6 hours.Note to observe the water outlet situation, keep aquifer yield stable (account for the raw materials used gross weight 0.5～1.0% of secondary esterification/per hour), distillate water 3.2～5.4%; Treat that the secondary esterification is complete, measure the acid number≤20mgKOH/g of reaction product;
Polycondensation: to taking out rough vacuum in described polyester synthesis reactor, vacuum tightness from-0.02Mpa～-0.04Mpa, every 30 minutes rising 0.05Mpa took out rough vacuum after 2～3 hours, cut off the vacuum line valve of described polyester synthesis reactor, stopped taking out rough vacuum, put overhead product;
Continuation is to taking out the described polyester synthesis reactor pumping high vacuum after rough vacuum, vacuum tightness from-0.05Mpa～-0.09Mpa, every 30 minutes rising 0.07Mpa, the pumping high vacuum time is about 2.5～3.5h, the still temperature control is at 245 ℃～255 ℃; After pumping high vacuum was complete, the Luoci pump that starts described polyester synthesis reactor was grown and is vacuumized, and vacuum tightness will reach-0.094Mpa, and long finding time is about 6～8 hours, and pure overhead product accounts for 2～8% of each raw material gross weight of polyester polyol;
After long vacuumizing, make at 60 ℃ of temperature, rotary viscosity is that 6000～10000mPas, hydroxyl value are that 45～55mgKOH/g, acid esters are the polyester polyol of 0.1～2mgKOH/g;
(2) composite adhesives (in this step, the consumption of each raw material used is all by mass percentage):
With above-mentioned 60～70% polyester polyols that make, 2～6% tolylene diisocyanate, 25～35% organic solvent reacted 3～4 hours under 70～90 ℃ of conditions, add 0.3～0.8% γ-glycidoxy propyl-triethoxysilicane (KH560), make solid content and be 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the adhesive for cable shielding film of 10～20mgKOH/g.Wherein, organic solvent can adopt any in toluene, vinyl acetic monomer, ritalin, butanone, acetone.
When this adhesive for cable shielding film uses, the general solidifying agent such as this tackiness agent and Baeyer L-75 are used in conjunction with, mass ratio is 10: 1, and the slaking condition is 50～60 ℃, and constant temperature was placed 24～48 hours.
The embodiment of the present invention prepares in the adhesive for cable shielding film process, make the polyester polyol introducing glycol ether and armorphous 1 with flexible polyester unit, 2 propylene glycol segments, make polyurethane binder product of preparation have splendid snappiness and ductility, introduce simultaneously trimethylolpropane tris functionality small molecular alcohol, give the urethane segment higher degree of crosslinking in solidification process, have higher compound fastness, can give goods good snappiness, ductility.This tackiness agent is used in bonding cable shielding film in shielding cable, make the cable shielding film of the shielding cable of preparing have the continuous aluminium of stretching, without crack performance, effectively guaranteed the shielding effect of cable shielding film.
Embodiment 2
The present embodiment provides a kind of adhesive for cable shielding film, is used for the cable shielding film of bonding shielding cable, and this tackiness agent is prepared in the steps below, comprising:
(1) preparation polyester polyol, get each raw material of preparation polyester polyol by following formula:
Raw materials quality part
Hexanodioic acid 28
M-phthalic acid 20
Glycol ether 32
1,2 propylene glycol 16
TriMethylolPropane(TMP) 4
The operation steps of preparation polyester polyol:
(1) esterification:
The hexanodioic acid of 28 mass parts, the glycol ether of 32 mass parts are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 2.5 hours; In an esterification process, keep aquifer yield stable (aquifer yield account for each raw material gross weight 0.5～1.0% of an esterification/per hour), distillate water 6.9 mass parts;
(2) secondary esterification:
The TriMethylolPropane(TMP) of 1,2 propylene glycol of the m-phthalic acid of 20 mass parts, 16 mass parts, 4 mass parts is added in described polyester synthesis reactor after an esterification, be warming up to 210～230 ℃, reacted 5 hours; Note to observe the water outlet situation, keep aquifer yield stable (aquifer yield account for each raw material gross weight 0.5～1.0% of secondary esterification/per hour), distillate water 4.3 mass parts; Treat that esterification is complete, the acid number of measuring reaction product is: 18mgKOH/g;
(3) polycondensation:
Described polyester synthesis reactor after complete to esterification is taken out rough vacuum, vacuum tightness from-0.02Mpa～-0.04Mpa, take out rough vacuum after 2～3 hours, cut off vacuum line valve, stop taking out rough vacuum, put overhead product.
Continuation is carried out pumping high vacuum to described polyester synthesis reactor, vacuum tightness from-0.05Mpa～-0.09Mpa, the pumping high vacuum time is about 3h, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum was complete, the Luoci pump that starts described polyester synthesis reactor was grown and is vacuumized, and vacuum tightness will reach-0.094Mpa, and long finding time is about 6 hours, and pure overhead product is 4 mass parts;
Long vacuumize complete after, the rotary viscosity (at 60 ℃ of temperature) of surveying the polyester polyol that makes is 8000mPas, hydroxyl value is 50.34mgKOH/g, acid esters is 0.18mgKOH/g.
(2) composite adhesives, by each raw material of following formula taking adhesive:
Raw materials quality part
The above-mentioned polyester polyol that makes 65
Methane diisocyanate 3.7
Vinyl acetic monomer 31
γ-glycidoxy propyl-triethoxysilicane (KH560) 0.3
The operation steps of composite adhesives:
With the above-mentioned polyester polyol that makes of 65 mass parts, the tolylene diisocyanate of 3.7 mass parts, the organic solvent of 31 mass parts reacted 4 hours under 85 ℃ of conditions, add the γ of 0.3 mass parts-glycidoxy propyl-triethoxysilicane (KH560), making solid content is 69%, viscosity is 3000mPas, and hydroxyl value is the cable film tackiness agent of 18.32mgKOH/g.
Embodiment 3
The present embodiment provides a kind of adhesive for cable shielding film, is used for the cable shielding film of bonding shielding cable, and this tackiness agent is prepared in the steps below, comprising:
(1) preparation polyester polyol, get each raw material of preparation polyester polyol by following formula:
Raw materials quality part
Hexanodioic acid 30
M-phthalic acid 18
Glycol ether 35
1,2 propylene glycol 15
TriMethylolPropane(TMP) 2
The operation steps of preparation polyester polyol:
(1) esterification:
The hexanodioic acid of 30 mass parts, the glycol ether of 35 mass parts are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 3 hours.Keep aquifer yield stable (0.5～1.0% hour), distillate water 7.3 mass parts;
(2) secondary esterification:
The TriMethylolPropane(TMP) of 1,2 propylene glycol of the m-phthalic acid of 18 mass parts, 15 mass parts, 2 mass parts is added in the above-mentioned described polyester synthesis reactor of completing an esterification, make in described polyester synthesis reactor and be warming up to 210～230 ℃, reacted 6 hours; In reaction process, note to observe the water outlet situation, keep aquifer yield stable (aquifer yield account for secondary esterification each raw material gross weight used 0.5～1.0%/per hour), distillate water 3.9 mass parts; Treat that esterification is complete, the acid number of measuring reaction product is 16.5mgKOH/g;
(3) polycondensation:
To taking out rough vacuum in the above-mentioned described polyester synthesis reactor of completing esterification, vacuum tightness from-0.02Mpa～-0.04Mpa, can be undertaken by the mode of the 0.05Mpa that per hour raises, low vacuumize 2～3 hours after, cut off vacuum line valve and stop low vacuumizing, put overhead product;
Continuation is to carrying out pumping high vacuum in described polyester synthesis reactor, vacuum tightness from-0.05Mpa～-0.09Mpa, can be undertaken by the mode of the 0.07Mpa that per hour raises, the high pumpdown time is about 3h, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum was complete, the Luoci pump that starts described polyester synthesis reactor was grown and is vacuumized, and vacuum tightness will reach-0.094Mpa, and the long time that vacuumizes is about 8 hours, and pure overhead product accounts for 3% of each raw material gross weight of preparation polyester polyol;
After long vacuumizing, making rotary viscosity (at 60 temperature) is that 46.29mgKOH/g, acid esters are the polyester polyol of 1.14mgKOH/g for 10000mPas, hydroxyl value;
(2) composite adhesives, get each raw material of composite adhesives by following formula:
Raw materials quality part
The above-mentioned polyester polyol that makes 65
Tolylene diisocyanate 2.9
Butanone 31.7
γ-glycidoxy propyl-triethoxysilicane (KH560) 0.4
The operation steps of composite adhesives:
Tolylene diisocyanate with the above-mentioned polyester polyol that makes of 65 mass parts, 2.9 mass parts, 31.7 the butanone of mass parts reacted 4 hours under 78 ℃ of conditions, add the γ of 0.4 mass parts-glycidoxy propyl-triethoxysilicane (KH560), making solid content is 68.3%, viscosity is 2800mPas, and hydroxyl value is the adhesive for cable shielding film of 15.67mgKOH/g.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1. adhesive for cable shielding film, it is characterized in that, this tackiness agent is take polyester polyol, tolylene diisocyanate, organic solvent, γ-glycidoxy propyl-triethoxysilicane as raw material, and each raw material carries out that solid content synthetic after building-up reactions is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g;
Wherein, described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, the polyester polyol of making after an esterification, secondary esterification and polycondensation;
Each raw material consumption of described tackiness agent is by weight percentage: polyester polyol 60～70%, tolylene diisocyanate 2～6%, organic solvent 25～35%, γ-glycidoxy propyl-triethoxysilicane 0.3～0.8%;
After described each raw material reaction, synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are that the tackiness agent of 10～20mgKOH/g comprises:
With polyester polyol, tolylene diisocyanate, organic solvent reacted 3～4 hours under 70～90 ℃ of conditions, added γ-glycidoxy propyl-triethoxysilicane, and making solid content is 65%～75%, viscosity is 2000mPas～3500mPas, and hydroxyl value is the tackiness agent of 10～20mgKOH/g;
Described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, and the polyester polyol of making after an esterification, secondary esterification and polycondensation specifically comprises:
An esterification: hexanodioic acid, glycol ether are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 2～3 hours;
Secondary esterification: m-phthalic acid, 1,2-PD, TriMethylolPropane(TMP) are joined in described polyester synthesis reactor after an above-mentioned esterification, be warming up to 210～230 ℃, reacted 5～6 hours; Complete the secondary esterification, the Suan Zhi＜=20mgKOH/g of secondary esterification after product;
Polycondensation: to taking out rough vacuum in the described polyester synthesis reactor after above-mentioned secondary esterification, vacuum tightness is from-0.02Mpa to-0.04MPa, and every 30 minutes raisings-0.005MPa take out to stop hanging down after 2～3 hours rough vacuum time and vacuumize, and put overhead product;
Continue pumping high vacuum to taking out in the described polyester synthesis reactor after rough vacuum, vacuum tightness is from-0.05MPa to-0.09MPa, every 30 minutes raising-0.007MPa, and the pumping high vacuum time is 2.5～3.5 hours, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum is complete, vacuumize growing in described polyester synthesis reactor, vacuum tightness will reach-0.094MPa, and the long pumpdown time is 6～8 hours, and pure overhead product accounts for 2～8% of each raw material gross weight of preparation polyester polyol;
After long vacuumizing, make that rotary viscosity is that 6000～10000mPas, hydroxyl value are that 45～55mgKOH/g, acid number are the polyester polyol of 0.1～2mgKOH/g at 60 ℃ of temperature;
Each raw material consumption of described polyester polyol is by weight percentage:
Hexanodioic acid 25～35%, glycol ether 30～40%, m-phthalic acid 15～25%, 1,2 propylene glycol 15～25%, TriMethylolPropane(TMP) 2～5%.
2. adhesive for cable shielding film according to claim 1, is characterized in that, the organic solvent in the raw material of described tackiness agent adopts any in toluene, vinyl acetic monomer, ritalin, butanone, acetone.
3. the preparation method of an adhesive for cable shielding film, is characterized in that, comprising:
Take polyester polyol, tolylene diisocyanate, organic solvent, γ-glycidoxy propyl-triethoxysilicane as raw material; Wherein, described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, the polyester polyol of making after an esterification, secondary esterification and polycondensation;
Above-mentioned each raw material is carried out after building-up reactions synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g, namely obtain adhesive for cable shielding film;
Described polyester polyol is take hexanodioic acid, glycol ether, m-phthalic acid, propylene glycol and TriMethylolPropane(TMP) as raw material, and the polyester polyol of making after an esterification, secondary esterification and polycondensation comprises:
Each raw material consumption is by mass percentage: hexanodioic acid 25～35%, glycol ether 30～40%, m-phthalic acid 15～25%, 1,2 propylene glycol 15～25%, TriMethylolPropane(TMP) 2～5%;
An esterification: the hexanodioic acid in above-mentioned raw materials, glycol ether are joined in the polyester synthesis reactor, be warming up to 210～230 ℃, reacted 2～3 hours;
Secondary esterification: the m-phthalic acid in above-mentioned raw materials, 1,2 propylene glycol, TriMethylolPropane(TMP) are joined in described polyester synthesis reactor after an above-mentioned esterification, be warming up to 210～230 ℃, reacted 5～6 hours; Complete the secondary esterification, the Suan Zhi＜=20mgKOH/g of secondary esterification after product;
Polycondensation: to taking out rough vacuum in the described polyester synthesis reactor after above-mentioned secondary esterification, vacuum tightness is from-0.02Mpa to-0.04MPa, and every 30 minutes raisings-0.005MPa take out to stop hanging down after 2～3 hours rough vacuum time and vacuumize, and put overhead product;
Continue pumping high vacuum to taking out in the described polyester synthesis reactor after rough vacuum, vacuum tightness is from-0.05MPa to-0.09MPa, every 30 minutes raising-0.007MPa, and the pumping high vacuum time is 2.5～3.5 hours, the still temperature control of described polyester synthesis reactor is at 245 ℃～255 ℃; After pumping high vacuum is complete, vacuumize growing in described polyester synthesis reactor, vacuum tightness will reach-0.094MPa, and the long pumpdown time is 6～8 hours, and pure overhead product accounts for 2～8% of each raw material gross weight of preparation polyester polyol;
After long vacuumizing, make that rotary viscosity is that 6000～10000mPas, hydroxyl value are that 45～55mgKOH/g, acid number are the polyester polyol of 0.1～2mgKOH/g at 60 ℃ of temperature;
Describedly make above-mentioned each raw material carry out after building-up reactions that synthetic solid content is 65%～75%, viscosity is that 2000mPas～3500mPas, hydroxyl value are the tackiness agent of 10～20mgKOH/g, namely make adhesive for cable shielding film and comprise:
Each raw material consumption is by mass percentage: polyester polyol 60～70%, tolylene diisocyanate 2～6%, organic solvent 25～35%, γ-glycidoxy propyl-triethoxysilicane 0.3～0.8%;
With polyester polyol, tolylene diisocyanate, organic solvent reacted 3～4 hours under 70～90 ℃ of conditions, added γ-glycidoxy propyl-triethoxysilicane, and making solid content is 65%～75%, viscosity is 2000mPas～3500mPas, and hydroxyl value is the tackiness agent of 10～20mgKOH/g.
4. the preparation method of adhesive for cable shielding film according to claim 3, is characterized in that, in a described esterif iotacation step, keep aquifer yield be stabilized in per hour water outlet be in esterif iotacation step raw materials used gross weight 0.5～1.0%.
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| CN102660007B (en) * | 2012-05-22 | 2014-05-14 | 常州市华润复合材料有限公司 | Application of substituted alkane in saturated polyester resin |
| CN102660216B (en) * | 2012-05-29 | 2013-07-10 | 四川爱伦科技有限公司 | Method for preparing adhesive for compounding aluminizing film |
| CN104403622B (en) * | 2014-12-18 | 2017-03-29 | 济南中正新材料有限公司 | A kind of polyurethane electromagnetic shielding fluid sealant and preparation method thereof |
| CN106367014A (en) * | 2016-09-30 | 2017-02-01 | 中山市康和化工有限公司 | High-stretching-ratio-resisting adhesive for cable shielding film |
| CN109851763B (en) * | 2018-12-28 | 2021-09-28 | 沈阳化工研究院有限公司 | Preparation method of outer layer adhesive of aluminum plastic film of lithium battery |
| CN112708116A (en) * | 2020-12-24 | 2021-04-27 | 上海回天新材料有限公司 | High-molecular-weight and high-flexibility polyester polyol for cable shielding film and preparation method and application thereof |
| CN113053577A (en) * | 2021-03-29 | 2021-06-29 | 安徽电缆股份有限公司 | Anti-corrosion and mould-resistant control cable for ships and warships and manufacturing method thereof |
| CN113192676A (en) * | 2021-05-06 | 2021-07-30 | 安徽电缆股份有限公司 | Corrosion-resistant armored communication cable for warships and manufacturing method thereof |
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| EP0038588B1 (en) * | 1980-04-21 | 1984-03-07 | Shell Internationale Researchmaatschappij B.V. | A heat-insulated container for liquefied gases |
| CN101870858A (en) * | 2010-06-28 | 2010-10-27 | 北京高盟新材料股份有限公司 | Low-cost adhesive and preparation method thereof |
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| EP0038588B1 (en) * | 1980-04-21 | 1984-03-07 | Shell Internationale Researchmaatschappij B.V. | A heat-insulated container for liquefied gases |
| CN101870858A (en) * | 2010-06-28 | 2010-10-27 | 北京高盟新材料股份有限公司 | Low-cost adhesive and preparation method thereof |
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