CN104059568A - Hot melt adhesive capable of evacuating electric stress and production method thereof - Google Patents
Hot melt adhesive capable of evacuating electric stress and production method thereof Download PDFInfo
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- CN104059568A CN104059568A CN201310088644.6A CN201310088644A CN104059568A CN 104059568 A CN104059568 A CN 104059568A CN 201310088644 A CN201310088644 A CN 201310088644A CN 104059568 A CN104059568 A CN 104059568A
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Abstract
The invention relates to a hot melt adhesive capable of evacuating electric stress and a production method thereof. The hot melt adhesive capable of evacuating electric stress has a dielectric constant of 13 to 25, volume resistivity of 1.0 * 10<9> to 1.0 * 10<11> omega.cm and peeling strength of 2 to 6 N/mm. The production method for the hot melt adhesive comprises a step of preparing a hot melt adhesive granule from a resin and a plurality of auxiliary agents and a step of dehydration and anti-blocking treatment so as to obtain the hot melt adhesive capable of evacuating electric stress. The hot melt adhesive is used to coat the inner wall of an electric stress control pipe; during heat shrinkage of the electric stress control pipe, the hot melt adhesive can be well bonded between the electric stress control pipe and a cable, exerts both an electric stress evacuating effect and a waterproof sealing effect, and has god application prospects.
Description
Technical field
The invention belongs to chemical technology field.More specifically, the present invention relates to a kind of electric stress and evacuate hot melt adhesive, also relate to the production method of described electric stress evacuation hot melt adhesive.
Background technology
In the construction process of high voltage power cable terminal or joint, the semiconductive layer of cable is by segment, and electric field distortion occurs and skewness, if do not take adequate measures uniform electric field, meeting consequently cause electrical breakdown because electric discharge occur electric stress undue concentration.
The general method that solves electric stress has two kinds: one is to power up stress control at semiconductive layer cut-off part to bore to improve electric field distribution; Another kind method is that the material that has certain electrical parameter in employing solves the concentrated problem of electric stress, and stress control material mainly contains two kinds: one is stress evacuating glue, and another kind is electric stress control tube.The product that the present invention protects is exactly a kind of stress evacuating glue.
Stress control tube belongs to the heat-shrink tube with specific function, not gluing or be coated with common hot melt adhesive of general wall therein, this just makes electric stress control material---stress control tube, and the irregular section of the cable semiconductive layer of can not well fitting declines electric stress dissemination.
Product of the present invention is that a kind of electric stress that is coated in electric stress control tube inwall is evacuated hot melt adhesive, different from existing electric stress evacuation glue purposes.Product of the present invention can make electric stress evacuate can well the fit irregular section of cable semiconductive layer of material in the time of the pyrocondensation of electric stress control tube.Do not have in the market this series products also not see and have relevant report, patent CN200910108224.3 is claimed is a kind of structure, is different from the claimed electric stress evacuation hot melt adhesive of the present invention and manufacture method thereof.
Therefore, the inventor, summing up on the basis of prior art, by lot of experiments, has completed the present invention finally.
Summary of the invention
The technical problem solving
The object of this invention is to provide a kind of electric stress and evacuate hot melt adhesive.
Another object of the present invention is to provide the production method that described a kind of electric stress is evacuated hot melt adhesive.
Technical scheme
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of electric stress and evacuate the production method of hot melt adhesive.
The step of the method is as follows:
A, batch mixing
Take 100 parts by weight resin, 70 ~ 140 weight part electric property adjusting agents, 40 ~ 100 weight part tackifier, 5 ~ 25 weight part viscosity-controlling agents, 1 ~ 7 weight part oxidation inhibitor, 2 ~ 14 weight part softening agent input high-speed mixers, after mixing, pack is for subsequent use;
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder, start twin screw extruder and extrude the electric stress hot melt adhesive of molten state, cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state, electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length;
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
A kind of preferred implementation according to the present invention, one or more are selected from the resin of EVA resin, EEA resin, EAA resin to it is characterized in that described resin.
The another kind of preferred implementation according to the present invention, is characterized in that described electric property adjusting agent is that one or more are selected from conductive carbon black, conductive zinc oxide, conductive titanium dioxide.
The another kind of preferred implementation according to the present invention, is characterized in that described tackifier are one or more tackifier that are selected from rosin, polymerized rosin, terpine resin, petroleum resin.
According to the present invention, another kind of preferred implementation, is characterized in that described viscosity-controlling agent is one or more viscosity-controlling agents that are selected from paraffin, Microcrystalline Wax, synthetic wax.
According to the present invention, another kind of preferred implementation, is characterized in that described oxidation inhibitor is one or more oxidation inhibitor that are selected from irgasfos 168, oxidation inhibitor DLTDP, oxidation inhibitor DSTDP.
According to the present invention, another kind of preferred implementation, is characterized in that described softening agent is one or more softening agent that are selected from dibutyl phthalate, diisobutyl phthalate, Vanay.
The invention still further relates to and adopt the electric stress that described method obtains to evacuate hot melt adhesive, described electric stress evacuate hot melt adhesive by micelle be attached to that its surperficial talcum powder forms.
A kind of preferred implementation of the present invention, its specific inductivity 13 ~ 25, volume specific resistance 1.0 × 10
9~ 1.0 × 10
11Ω cm, stripping strength 2 ~ 6N/mm.
The present invention will be described below in more detail.
The present invention relates to a kind of electric stress and evacuate the production method of hot melt adhesive.
The step of the method is as follows:
A, batch mixing
Take 100 parts by weight resin, 70 ~ 140 weight part electric property adjusting agents, 40 ~ 100 weight part tackifier, 5 ~ 25 weight part viscosity-controlling agents, 1 ~ 7 weight part oxidation inhibitor, 2 ~ 14 weight part softening agent input high-speed mixers, after mixing, pack is for subsequent use.
High-speed mixer is the conventional machine that powder material is mixed of a kind of chemical industry in the present invention.As Shenyang northern new railway is risen the mixing machine that chemical machinery company limited produces.
One or more are selected from the resin of EVA resin, EEA resin, EAA resin described resin.
EVA resin full name ethene-vinyl acetate resin copolymer, general vinyl acetate between to for plastic (VA) content is 5%～40%.Be widely used in the fields such as foaming shoe material, functional canopy film, packing film, hot melt adhesive, electric wire and toy.
EEA full name ethylene-ethyl acrylate copolymer, its structure is similar to EVA, but its use temperature a wider range, Heat stability is good, polarity is low.Can be used as polymer modification, hot-melt adhesive and sealing agent, flexible hose and plain end pipe, laminate, multilayer film, injection moulding and extrusion sections and electric wire and cable compound.
EAA full name ethylene-acrylic acid copolymer, is a kind of polymkeric substance with thermoplasticity and high cementability, is widely used in the aspects such as packaging, powder coating, tackiness agent, hot melt adhesive, sealing material, aqueous solvent.
In the present invention, using resin is all the rosin products of extensively selling in the market, the EVA rosin products that for example Taiwan polymeric chemical product company limited produces, EEA resin and the EAA rosin products that du pont company head produces.
According to the present invention, described electric property adjusting agent should be appreciated that it is a kind of auxiliary agent that can regulate hot melt adhesive unit for electrical property parameters.Therefore, every have this performance and do not damage again more such chemical substances of resin property used herein and may be used to the present invention.
Described electric property adjusting agent is that one or more are selected from conductive carbon black, conductive zinc oxide, conductive titanium dioxide.They are all normally used Chemicals of generally selling on market in chemical technology field.
In the present invention, if 100 parts by weight resin are used while being less than 70 weight part electric property adjusting agent, can make product dielectric constant less; If 100 parts by weight resin are used while being greater than 140 weight part electric property adjusting agent, can make small product size resistivity less; Therefore, 100 parts by weight resin use 70 ~ 140 weight part electric property adjusting agents are suitable.Preferably, 100 parts by weight resin are used 80 ~ 130 weight part electric property adjusting agents; More preferably, 100 parts by weight resin are used 90 ~ 120 weight part electric property adjusting agents.
According to the present invention, described tackifier should be appreciated that it is that one can make the sticking auxiliary agent of hot melt adhesive tool.Therefore, every have this performance and do not damage again more such chemical substances of resin property used herein and may be used to the present invention.
Described tackifier are one or more tackifier that are selected from rosin, polymerized rosin, terpine resin, petroleum resin.They are all normally used Chemicals of generally selling on market in chemical technology field.
In the present invention, if 100 parts by weight resin are used while being less than 40 weight part tackifier, can make product viscosity less; If 100 parts by weight resin are used while being greater than 100 weight part tackifier, can make product easily lump; Therefore, 100 parts by weight resin use 40 ~ 100 weight part tackifier are suitable.Preferably, 100 parts by weight resin are used 50 ~ 90 weight part tackifier; More preferably, 100 parts by weight resin are used 70 ~ 80 weight part tackifier.
According to the present invention, described viscosity-controlling agent should be appreciated that it is a kind of auxiliary agent that can regulate hot melt adhesive viscosity.Therefore, every have this performance and do not damage again more such chemical substances of resin property used herein and may be used to the present invention.
Described viscosity-controlling agent is one or more viscosity-controlling agents that are selected from paraffin, Microcrystalline Wax, synthetic wax.They are all normally used Chemicals of generally selling on market in chemical technology field.
In the present invention, if 100 parts by weight resin are used while being less than 5 weight part viscosity-controlling agent, can make product easily lump; If 100 parts by weight resin are used while being greater than 25 weight part viscosity-controlling agent, can make product viscosity lower; Therefore, 100 parts by weight resin use 5 ~ 25 weight part viscosity-controlling agents are suitable.Preferably, 100 parts by weight resin are used 10 ~ 20 weight part viscosity-controlling agents; More preferably, 100 parts by weight resin are used 15 ~ 20 weight part viscosity-controlling agents.
According to the present invention, described oxidation inhibitor should be appreciated that it is a kind of auxiliary agent that can make hot melt adhesive have antioxygenation.Therefore, every have this performance and do not damage again more such chemical substances of resin property used herein and may be used to the present invention.
Described oxidation inhibitor is one or more oxidation inhibitor that are selected from irgasfos 168, oxidation inhibitor DLTDP, oxidation inhibitor DSTDP.They are all normally used Chemicals of generally selling on market in chemical technology field.
In the present invention, if 100 parts by weight resin are used while being less than 1 weight part oxidation inhibitor, can not have oxidation resistant effect; If 100 parts by weight resin are used while being greater than 7 weight part oxidation inhibitor, can make product performance surplus cause waste; Therefore, 100 parts by weight resin use 1 ~ 7 weight part oxidation inhibitor are suitable.Preferably, 100 parts by weight resin are used 2 ~ 6 weight part oxidation inhibitor; More preferably, 100 parts by weight resin are used 3 ~ 4 weight part oxidation inhibitor.
According to the present invention, described softening agent should be appreciated that it is a kind of auxiliary agent that can regulate hot melt adhesive plasticity.Therefore, every have this performance and do not damage again more such chemical substances of resin property used herein and may be used to the present invention.
Described softening agent is one or more softening agent that are selected from dibutyl phthalate, diisobutyl phthalate, Vanay.They are all normally used Chemicals of generally selling on market in chemical technology field.
In the present invention, if 100 parts by weight resin are used while being less than 2 weight part softening agent, can make product plasticity lower; If 100 parts by weight resin are used while being greater than 14 weight part softening agent, can make product plasticity too high; Therefore, 100 parts by weight resin use 2 ~ 14 weight part softening agent are suitable.Preferably, 100 parts by weight resin are used 4 ~ 12 weight part softening agent; More preferably, 100 parts by weight resin are used 6 ~ 10 weight part softening agent.
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder; start twin screw extruder and extrude the electric stress hot melt adhesive of molten state; cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state; electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length.
Twin screw extruder is that one is applicable to raw material processing, material mixing uniform machine therein.The twin screw extruder that the present invention uses is the normally used twin screw extruder of generally selling on market in chemical technology field, as the twin screw extruder of Nanjing gold shell line mechano-electronic company limited production.
Dicing machine is the general name that strip or sheet plastic cement is cut into equipment or the machine of granulate material; the dicing machine that the present invention uses is the normally used dicing machine of generally selling on market in chemical industry and multiple technical field, the dicing machine of producing as southern Taizhou City Yu Le mechanical means company limited.
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
Water extracter is to utilize the centrifugal force of high speed rotating that water is thrown away to dehydration barrel and the machine that reaches drying purpose, the water extracter that the present invention uses is the normally used water extracter of generally selling on market in chemical technology field, as the water extracter of Huzhou Wangneng Environmental Protection Technology Co., Ltd.'s production.
Stirrer is mainly that material is carried out to strong shearing, shock, pulverizing, dispersion at a high speed, reaches the function of rapid mixing, dissolving, dispersion, refinement.It is the high-efficiency appliance that the solids such as coating stir, disperse, dissolve.As the stirrer of Beijing Guo Hao chemical machinery company limited production.
The invention still further relates to and adopt the electric stress that described method obtains to evacuate hot melt adhesive, described electric stress evacuate hot melt adhesive by micelle be attached to that its surperficial talcum powder forms.
Adopt the electric stress that obtains of the inventive method to evacuate hot melt adhesive and carried out the test of specific inductivity, volume specific resistance, stripping strength.
Specific inductivity is measured according to GB/T1693-2007.The method is applicable to sample and is placed under the alternating electric field that frequency is 50Hz, measures its dielectric loss angle tangent or electric capacity, and calculates specific inductivity by capacity meter.Calculated the specific inductivity of sample by following formula.
In formula:
C
x-sample electrical capacity, pF
D
1-bore, cm
D
2-pipe external diameter, cm
L-electrode length, cm
The instrument that the mensuration of specific inductivity is used is the YY-2814 type Dielectric Coefficient instrument that wireless six factories in Tianjin produce, and mensuration is carried out under the following conditions: frequency=100Hz.
Volume specific resistance is measured according to GB/T1692-92.The method is applicable to the mensuration that resistance is greater than the vulcanized rubber insulation resistivity of 108 Ω.By sample is applied to volts DS, test, by perpendicular to sample or along the leakage current of specimen surface, is calculated the volume specific resistance of sample by following formula.
Volume specific resistance=RVS/d
In formula:
RV-volume resistance, Ω
S-electrode useful area, cm
2
D-sample thickness, cm
It is the ZC-90G that upper Haitai gull Electronics Co., Ltd. produces that volume specific resistance is measured the instrument using, and mensuration is carried out under the following conditions: voltage=1000V, measures 23 ± 2 DEG C of temperature, relative humidity 60 ﹪-70 ﹪.
Stripping strength is measured according to GB/T2790-1995.This standard has specified device, sample preparation, experimental procedure and the result treatment of 180 ° of stripping tests of flexible material and the bonding splicing sample of rigid material.Calculated the stripping strength of sample by following formula.
Stripping strength=F/B
Wherein:
F: peeling force, N
B: specimen width, mm
It is the WDW-5KN microcomputer controlled electro minor universal testing machine that Changchun the second material-testing machine factory produces that stripping strength is measured the instrument using, and test is measured under GB2918 standard defined terms.
Adopt aforesaid method to measure specific inductivity 13 ~ 25, the volume specific resistance 1.0 × 10 of a kind of high ductibility electric stress evacuation of the present invention glue
9~ 1.0 × 10
11cm, stripping strength 2 ~ 6N/mm.
Electric stress of the present invention is evacuated hot melt adhesive and is applied in electric stress control tube inwall, has bonding electric stress control tube and cable, electric stress evacuation and the effect sealing.
Beneficial effect
Electric stress of the present invention is evacuated hot melt adhesive and is had following advantage:
1, product of the present invention is a kind of hot melt adhesive with electric stress evacuation glue, is used for being coated in electric stress control tube inwall.The electric stress control material irregular section of cable semiconductive layer of well fitting in the time using electric stress control tube, has eliminated the not tight drawback of laminating of traditional electrical stress control tube.On market, do not sell with the similar product of product of the present invention, there is no bibliographical information yet, there is novelty.
2, product of the present invention tight being bonded between stress tube and cable of energy after the pyrocondensation of electric stress control tube completes, has the effect of water-tight, has improved the security of cable splice.
Electric stress of the present invention evacuates that the electric property of hot melt adhesive is good, adhesiveproperties is good, adopts the specific inductivity 13 ~ 25 of GB/T1693-2007 standard test, adopts its volume specific resistance 1.0 × 10 of GB/T1692-92 standard test
9~ 1.0 × 10
11Ω cm, adopts its stripping strength of GB/T2790-1995 standard test 2 ~ 6N/mm.The effect that these performances have not only met electric stress evacuates the requirement of glue and also can play water-tight, the security that has improved cable splice, extends work-ing life of cable, has good application prospect.
Embodiment
To better understand the present invention below by these embodiment
Embodiment 1: electric stress of the present invention is evacuated the production of hot melt adhesive
The step of the method is as follows:
A, batch mixing
Take 100 parts of EVA resins, 80 weight part conductive carbon blacks, 70 weight part rosin, 15 weight part Microcrystalline Waxes, 4 weight part oxidation inhibitor DSTDP, 8 weight part diisobutyl phthalates input high-speed mixers, after mixing, pack is for subsequent use;
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder, start twin screw extruder and extrude the electric stress hot melt adhesive of molten state, cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state, electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length;
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
The electric stress obtaining is evacuated hot melt adhesive glue and is adopted the measuring method of describing in this specification sheets to carry out specific inductivity, volume specific resistance and stripping strength mensuration, and its measurement result is as follows:
Specific inductivity: 13.4
Volume specific resistance: 7.5 × 10
10Ω cm
Stripping strength: 3.87N/mm.
Embodiment 2: electric stress of the present invention is evacuated the production of hot melt adhesive
The step of the method is as follows:
A, batch mixing
Take 100 weight part EEA resins, 100 weight part conductive zinc oxides, 90 weight part polymerized rosines, 22 weight part synthetic waxs, 2 weight part oxidation inhibitor DLTDP, 4 weight part Vanays input high-speed mixers, after mixing, pack is for subsequent use;
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder, start twin screw extruder and extrude the electric stress hot melt adhesive of molten state, cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state, electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length;
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
The electric stress obtaining is evacuated hot melt adhesive glue and is adopted the measuring method of describing in this specification sheets to carry out specific inductivity, volume specific resistance and stripping strength mensuration, and its measurement result is as follows:
Specific inductivity: 15.1
Volume specific resistance: 4.3 × 10
10Ω cm
Stripping strength: 2.96N/mm.
Embodiment 3: electric stress of the present invention is evacuated the production of hot melt adhesive
The step of the method is as follows:
A, batch mixing
Take 100 weight part EAA resins, 130 weight part conductive titanium dioxides, 80 weight part terpine resins, 10 weight part paraffin, 6 weight part irgasfos 168s, 10 weight part dibutyl phthalates input high-speed mixers, after mixing, pack is for subsequent use;
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder, start twin screw extruder and extrude the electric stress hot melt adhesive of molten state, cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state, electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length;
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
The electric stress obtaining is evacuated hot melt adhesive glue and is adopted the measuring method of describing in this specification sheets to carry out specific inductivity, volume specific resistance and stripping strength mensuration, and its measurement result is as follows:
Specific inductivity: 22.0
Volume specific resistance: 4.9 × 10
9Ω cm
Stripping strength: 5.48N/mm.
Embodiment 4: electric stress of the present invention is evacuated the production of hot melt adhesive
The step of the method is as follows:
A, batch mixing
Take 50 parts of EVA resins, 50 weight part EEA resins, 50 weight part conductive carbon blacks, 70 weight part conductive titanium dioxides, 50 weight part petroleum resin, 7 weight part Microcrystalline Waxes, 9 weight part synthetic waxs, 2 weight part irgasfos 168s, 2 weight part oxidation inhibitor DLTDP, 4 weight part dibutyl phthalates, 3 weight part Vanays input high-speed mixers, after mixing, pack is for subsequent use;
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder, start twin screw extruder and extrude the electric stress hot melt adhesive of molten state, cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state, electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length;
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
The electric stress obtaining is evacuated hot melt adhesive glue and is adopted the measuring method of describing in this specification sheets to carry out specific inductivity, volume specific resistance and stripping strength mensuration, and its measurement result is as follows:
Specific inductivity: 24.7
Volume specific resistance: 2.5 × 10
9Ω cm
Stripping strength: 2.42N/mm.
Embodiment 5: electric stress of the present invention is evacuated the production of hot melt adhesive
The step of the method is as follows:
A, batch mixing
Take 50 weight part EEA resins, 50 weight part EAA resins, 80 weight part conductive zinc oxides, 40 weight part conductive titanium dioxides, 30 weight part polymerized rosines, 45 weight part terpine resins, 6 weight part paraffin, 6 weight part Microcrystalline Waxes, 1 weight part irgasfos 168,2 weight part oxidation inhibitor DSTDP, 3 weight part diisobutyl phthalates, 3 weight part Vanays input high-speed mixers, after mixing, pack is for subsequent use.
Other implementation step is identical with embodiment 1.The electric stress obtaining is evacuated glue and is adopted the measuring method of describing in this specification sheets to carry out specific inductivity, volume specific resistance and stripping strength mensuration, and its measurement result is as follows:
Specific inductivity: 21.4
Volume specific resistance: 5.6 × 10
9Ω cm
Stripping strength: 4.55N/mm.
Embodiment 6: electric stress of the present invention is evacuated the production of hot melt adhesive
The step of the method is as follows:
A, batch mixing
Take 30 parts of EVA resins, 30 weight part EEA resins, 40 weight part EAA resins, 35 weight part conductive carbon blacks, 20 weight part conductive zinc oxides, 65 weight part conductive titanium dioxides, 35 weight part polymerized rosines, 25 weight part petroleum resin, 5 weight part paraffin, 7 weight part Microcrystalline Waxes, 6 weight part synthetic waxs, 2 weight part irgasfos 168s, 2 weight part oxidation inhibitor DLTDP, 1 weight part oxidation inhibitor DSTDP, 4 weight part diisobutyl phthalates, 4 weight part dibutyl phthalates, 4 weight part Vanays drop into high-speed mixer, after mixing, pack is for subsequent use.
Other implementation step is identical with embodiment 1.The electric stress obtaining is evacuated glue and is adopted the measuring method of describing in this specification sheets to carry out specific inductivity, volume specific resistance and stripping strength mensuration, and its measurement result is as follows:
Specific inductivity: 22.3
Volume specific resistance: 4.7 × 10
9Ω cm
Stripping strength: 2.43N/mm.
Claims (9)
1. electric stress is evacuated a production method for hot melt adhesive, it is characterized in that the step of the method is as follows:
A, batch mixing
Take 100 parts by weight resin, 70 ~ 140 weight part electric property adjusting agents, 40 ~ 100 weight part tackifier, 5 ~ 25 weight part viscosity-controlling agents, 1 ~ 7 weight part oxidation inhibitor, 2 ~ 14 weight part softening agent input high-speed mixers, after mixing, pack is for subsequent use;
B, extrude, cooling, granulation
By steps A) mixed material pours in the hopper of twin screw extruder, start twin screw extruder and extrude the electric stress hot melt adhesive of molten state, cooling by carrying out in the electric stress hot melt adhesive introducing cooling trough of molten state, electric stress hot melt adhesive solid-state after cooling is introduced dicing machine, regulates engine speed to obtain the micelle of appropriate length;
C, dehydration, anti-caking processing
By step B) micelle that obtains puts into water extracter dehydration and obtains dry micelle, and dry micelle and appropriate talcum powder are put into stirrer, and start stirrer and make talcum powder be evenly distributed in micelle surface, the electric stress hot melt adhesive described in obtaining.
2. method according to claim 1, one or more are selected from the resin of EVA resin, EEA resin, EAA resin to it is characterized in that described resin.
3. method according to claim 1, is characterized in that described electric property adjusting agent is that one or more are selected from graphitized carbon black, conductive zinc oxide, conductive titanium dioxide.
4. method according to claim 1, is characterized in that described tackifier are one or more tackifier that are selected from rosin, polymerized rosin, terpine resin, petroleum resin.
5. method according to claim 1, is characterized in that described viscosity-controlling agent is one or more viscosity-controlling agents that are selected from paraffin, Microcrystalline Wax, synthetic wax.
6. method according to claim 1, is characterized in that described oxidation inhibitor is one or more oxidation inhibitor that are selected from irgasfos 168, oxidation inhibitor DLTDP, oxidation inhibitor DSTDP.
7. method according to claim 1, is characterized in that described softening agent is one or more softening agent that are selected from dibutyl phthalate, diisobutyl phthalate, Vanay.
8. the electric stress that obtains according to method described in any one claim in claim 1 ~ 7 is evacuated hot melt adhesive, it is characterized in that it by micelle be attached to that its surperficial talcum powder forms.
9. method according to claim 8, is characterized in that its specific inductivity 13 ~ 25, volume specific resistance 1.0 × 10
9~ 1.0 × 10
11Ω cm, stripping strength 2 ~ 6N/mm.
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| CN201310088644.6A CN104059568A (en) | 2013-03-20 | 2013-03-20 | Hot melt adhesive capable of evacuating electric stress and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106182575A (en) * | 2016-06-30 | 2016-12-07 | 杭州富通通信技术股份有限公司 | Stealthy optical cable production technology and coating equipment |
| CN106281100A (en) * | 2016-08-25 | 2017-01-04 | 强新正品（苏州）环保材料科技有限公司 | Conductive glue slice |
| CN108624259A (en) * | 2018-06-05 | 2018-10-09 | 汪逸凡 | A kind of conduction EVA hot-melt adhesive |
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Cited By (7)
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| CN106182575A (en) * | 2016-06-30 | 2016-12-07 | 杭州富通通信技术股份有限公司 | Stealthy optical cable production technology and coating equipment |
| CN106182575B (en) * | 2016-06-30 | 2018-11-30 | 杭州富通通信技术股份有限公司 | Stealthy optical cable production technology |
| CN109159358A (en) * | 2016-06-30 | 2019-01-08 | 杭州富通通信技术股份有限公司 | Coating equipment for stealthy optical cable production technology |
| CN109203359A (en) * | 2016-06-30 | 2019-01-15 | 杭州富通通信技术股份有限公司 | Stealthy optical cable production technology |
| CN109435141A (en) * | 2016-06-30 | 2019-03-08 | 杭州富通通信技术股份有限公司 | Stealthy optical cable production technology |
| CN106281100A (en) * | 2016-08-25 | 2017-01-04 | 强新正品（苏州）环保材料科技有限公司 | Conductive glue slice |
| CN108624259A (en) * | 2018-06-05 | 2018-10-09 | 汪逸凡 | A kind of conduction EVA hot-melt adhesive |
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Application publication date: 20140924 |