CN106188553A - Copolyesters electronic isolation cushion block and manufacture method thereof - Google Patents
Copolyesters electronic isolation cushion block and manufacture method thereof Download PDFInfo
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- CN106188553A CN106188553A CN201610653611.5A CN201610653611A CN106188553A CN 106188553 A CN106188553 A CN 106188553A CN 201610653611 A CN201610653611 A CN 201610653611A CN 106188553 A CN106188553 A CN 106188553A
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- copolyesters
- cushion block
- electronic isolation
- isolation cushion
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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
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/672—Dicarboxylic acids and dihydroxy compounds
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
- C08G63/86—Germanium, antimony, or compounds thereof
- C08G63/863—Germanium or compounds thereof
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
- C08G63/86—Germanium, antimony, or compounds thereof
- C08G63/866—Antimony or compounds thereof
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
- H01B3/422—Linear saturated polyesters derived from dicarboxylic acids and dihydroxy compounds
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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)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention discloses a kind of copolyesters electronic isolation cushion block, it is made up of the material of following weight/mass percentage composition: composition of raw materials is made up of the material of following weight/mass percentage composition: p-phthalic acid 50%～70%；Ethylene glycol 20%～40%；1,4 cyclohexanedimethanols 1%～3%；Polypropylene oxide triol 0.2%～2%；Tetramethylolmethane 0.2%～2%；1,3,5 phloroglucitols 0.2%～2%；Antimony acetate 0.1%～1%；Germanium dioxide 0.1%～1%；Trimethyl phosphate 0.1%～2%；Maleic anhydride 0.5%～5%；Styrene 0.5%～5%；Polybutylene terephthalate (PBT) 3%～8%；The weight/mass percentage composition summation of above material is 100%.By with the addition of maleic anhydride and the styrene improving toughness reinforcing performance in the present invention, improve the ability that is hit of cross-over block.
Description
Technical field
The invention belongs to electrical insulating material field, particularly to a kind of copolyesters electronic isolation cushion block and manufacturer thereof
Method.
Background technology
Cross-over block is widely used in electrical equipment, plays the effect of insulating supporting, is particularly made up of PET insulant
Cross-over block, is the comprehensive insulant of a kind of Performance comparision.Polyethylene terephthalate is called for short PET, for macromolecule
Polymer, by ethylene glycol terephthalate generation dehydration condensation.Ethylene glycol terephthalate is by benzene two
Formic acid and ethylene glycol generation esterification gained.PET is milky or light yellow, the polymer of highly crystalline, and surface is smooth to be had
Gloss.There is within the scope of wider temperature excellent physical and mechanical properties, life-time service temperature up to 120 DEG C, electrical insulating property
Excellent, even under high-temperature high-frequency, its electrical property is still preferable, but corona resistance is poor, creep resistance, fatigue durability, rub resistance
Property, dimensional stability are the most fine.PET molecular structure high degree of symmetry, has certain crystalline orientation ability, so having relatively
High film property and becoming second nature.PET has good optical property and weatherability, and amorphous PET has good
Optical transparence.Additionally PET has excellent abrasion performance frictional property and dimensional stability and electrical insulating property.PET makes
Bottle has that intensity is big, the transparency is good, nontoxic, impermeable, light weight, production efficiency are high thus receives and be widely applied, spy
It not at electronic applications and mechanical fields such as insulating material, capacitor films, flexible printed circuit board and thin film switches.
Not enough in toughness reinforcing performance as the cross-over block of carrier by PET, cause the hydraulic performance decline that is hit of cross-over block, absolutely
Edge cushion block easily ftractures or broken, directly affects insulation and the support function of cross-over block, even results in electrical equipment and break down, by
This, need badly and a kind of tolerate the cross-over block that impact strength is high.
Summary of the invention
For above-mentioned technical problem, the present invention proposes a kind of copolyesters electronic isolation cushion block and manufacture method thereof, this
Invention, by being modified PET, with the addition of maleic anhydride and the styrene improving toughness reinforcing performance, improves being subject to of cross-over block
Impact capacity.
In order to realize according to object of the present invention and further advantage, it is provided that a kind of copolyesters electronic isolation cushion block,
Comprise the following steps:
The weight/mass percentage composition summation of above material is 100%.
Preferably, described germanium dioxide is can be by the white powder of 800 eye mesh screens.
Preferably, described antimony acetate can pass through 600 eye mesh screens.
The manufacture method of a kind of copolyesters electronic isolation cushion block, comprises the following steps:
Step 1) weigh in the ratio of above-mentioned raw materials formula；
Step 2) by the p-phthalic acid weighed, ethylene glycol, 1,4 cyclohexane dimethanol, polypropylene oxide triol, season
Send after the mixed material mix homogeneously of penta tetrol, phloroglucitol, antimony acetate, germanium dioxide and trimethyl phosphate composition
To the first esterifier, carry out esterification, generate the first carboxylate；
Step 3) described first carboxylate and described maleic anhydride and the styrene weighed are put into the second esterification simultaneously
Reactor carries out esterification, generates the second carboxylate；
Step 4) the second carboxylate and the described polybutylene terephthalate (PBT) weighed are sent into Prepolycondensating reactor
In carry out prepolymerization reaction, generate the first prepolymer, described first prepolymer sent into eventually after prepolymer filter filters
Polycondensation reactor carries out whole polycondensation reaction, is finally passed through nitrogen, export copolyester section；
Step 5) described copolyester section is carried out following process process, obtain cross-over block.
Preferably, described step 2) in, described mixed material is sent in slurry preparation groove, at slurry preparation groove agitator
Effect under, stir, the rotating speed of agitator is 10r/min, and stirring incorporation time is 3h.
Preferably, described first esterification reaction temperature is 245～255 DEG C, and the second esterification reaction temperature is 255～265 DEG C,
The operation pressure of described Prepolycondensating reactor is 9～11kPa, and the operating temperature of described final polycondensation reactor is 265～275 DEG C.
Preferably, described step 5) in, described following process is processed as: carry out pre-crystallized, dried, heating successively
After fusion plastification and filtration, injection mo(u)lding, obtain end product cross-over block after shaped test.
Preferably, described germanium dioxide is can be by the white powder of 800 eye mesh screens；Described antimony acetate can pass through
600 eye mesh screens.
Preferably, pre-crystallized and baking temperature is 150 DEG C～170 DEG C, drying time 3～4h.
Preferably, the heating-up temperature of described heating fusion plastification is 275 DEG C～285 DEG C.
The present invention at least includes following beneficial effect:
1, the cross-over block of the present invention is by adding multiple polyhydric alcohol, improves the consistency of cross-over block, thus improves
The insulation resistance of cross-over block and mechanical performance；
2, the cross-over block of the present invention is by adding polybutylene terephthalate (PBT), improves the thermostability of cross-over block
Can, reduce the heat shrinkability of cross-over block simultaneously；
3, the preparation technology simple possible of the cross-over block of the present invention, it is simple to industrialization；
4, the cross-over block of the present invention is by adding maleic anhydride and styrene, improves the toughness reinforcing performance of cross-over block,
Tolerance impact strength is higher.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this
Invention research and practice and be understood by the person skilled in the art.
Detailed description of the invention
The present invention is described in further detail below, with make those skilled in the art with reference to description word can evidence
To implement.
Should be appreciated that used in the present invention such as " have ", " comprising " and " including " term do not allot one or
Other elements multiple or the existence of a combination thereof or interpolation.
The present invention is based on terephthalate, and introduces 1,4-CHDM, polypropylene oxide three
Alcohol, tetramethylolmethane, 1,3,5-phloroglucitols are as additive, it is intended to fully improve the consistency of cross-over block so that insulation
The insulating properties of cushion block are strengthened, and improve the mechanical performance of cross-over block simultaneously.Meanwhile, antimony acetate, germanium dioxide and phosphorus are introduced
Acid trimethyl is as esterification and polycondensation process catalyst, and introduces the sweet acid in Malaysia and styrene, as cross-over block
Toughener, it is intended to improve the tolerance impact capacity of cross-over block, finally coordinate and add appropriate polybutylene terephthalate (PBT),
It is intended to improve the heat resistance of cross-over block, reduces the heat shrinkability of cross-over block simultaneously, ensure the exhausted of cross-over block
Edge performance, improves the reliability of the electrical equipment using this cross-over block.
Preparation employing process uses twice esterification, twice polycondensation, with maleic anhydride, styrene and poly terephthalic acid fourth
After carrying out pre-crystallized, dried, heating fusion plastification after diol ester mixing successively and filtering, injection mo(u)lding, shaped test
After obtain end product cross-over block.
Conventional with p-phthalic acid and ethylene glycol as raw material, the toughness reinforcing performance of polyester insulated cushion block prepared by catalytic esterification
The highest, affect the ability that is hit of cross-over block, meanwhile, under the high temperature conditions, as easy as rolling off a log contraction distortion, cause cross-over block
Can decline.To this end, carry out formula as below improvement:
1) introducing 1,4-CHDM, its scope control, at 1wt%～3wt%, introduces in composite insulation cushion block
1,4-CHDM can reduce the fusing point of polyester in building-up process, raise glass temperature, and copolymer is become noncrystalline
Structure, so that cross-over block is finer and close, reduces hydrone transmitance；
2) introducing multiple polyhydric alcohol, wherein, the addition of polypropylene oxide triol is 0.2wt%～2wt%；Tetramethylolmethane
Addition be 0.2wt%～2wt%；The addition of phloroglucitol is 0.2wt%～2wt%；Drawing of polyhydric alcohol
Enter, reduce the crystallization rate of polyester macromolecule so that arrange finer and close between polyester molecule, reduce owing to crystallization rate is too fast
And the too much defect causing cross-over block to be internally generated, further increase the consistency of cross-over block；
3) introducing maleic anhydride and styrene are as toughener, and its span of control is all at 0.5wt%～5wt%, toughener
Introducing improve cross-over block tolerance impact strength, improve use this cross-over block electrical equipment reliability；
4) introducing polybutylene terephthalate (PBT), its span of control is in 3wt%～8wt%, poly terephthalic acid fourth two
The introducing of alcohol ester improves the heat resistance of cross-over block, reduces the heat shrinkability of cross-over block simultaneously, and further
Improve the mechanical performance of cross-over block.
To achieve these goals, the present invention is by the following technical solutions: a kind of copolyesters electronic isolation cushion block, raw material is joined
Side is made up of the material of following weight/mass percentage composition:
The weight/mass percentage composition summation of above material is 100%.
In technique scheme, described germanium dioxide is can be by the white powder of 800 eye mesh screens, described antimony acetate energy
Enough by 600 eye mesh screens.Germanium dioxide and antimony acetate as catalyst, particle size distribution evenly, careful, catalytic performance is the highest；
Meanwhile, appropriate 1,4-CHDM, polypropylene oxide triol, tetramethylolmethane, 1,3,5-phloroglucitols, binary are added
The addition of alcohol and polyhydric alcohol can reduce the crystalline rate of copolyesters, improves the consistency of cross-over block.
The manufacture method of a kind of copolyesters electronic isolation cushion block, comprises the following steps:
Step 1) weigh in the ratio of above-mentioned raw materials formula；
Step 2) by the p-phthalic acid weighed, ethylene glycol, 1,4 cyclohexane dimethanol, polypropylene oxide triol, season
Send after the mixed material mix homogeneously of penta tetrol, phloroglucitol, antimony acetate, germanium dioxide and trimethyl phosphate composition
To the first esterifier, carry out esterification, generate the first carboxylate；
Step 3) described first carboxylate and described maleic anhydride and the styrene weighed are put into the second esterification simultaneously
Reactor carries out esterification, generates the second carboxylate；
Step 4) the second carboxylate and the described polybutylene terephthalate (PBT) weighed are sent into Prepolycondensating reactor
In carry out prepolymerization reaction, generate the first prepolymer, described first prepolymer sent into eventually after prepolymer filter filters
Polycondensation reactor carries out whole polycondensation reaction, is finally passed through nitrogen, export copolyester section；
Step 5) described copolyester section is carried out following process process, obtain cross-over block.
Concrete, by the p-phthalic acid weighed, ethylene glycol, 1,4-CHDM, polypropylene oxide triol, season
Penta tetrol, 1,3,5-phloroglucitols, antimony acetate, germanium dioxide and trimethyl phosphate are sent in slurry preparation groove, adjust at slurry
Joining under the effect of groove agitator, stir, the rotating speed of agitator is 10r/min, and mixing time is 3h；The slurry configured
Being delivered in the first esterifier carry out esterification by slurry delivery pump, described first esterifier is vertical chuck
Reactor, is provided with heating coil and belt stirrer in it.Reactant reacts generation the first esterification in the first reaction kettle of the esterification
Thing, puts into described first carboxylate the second esterifier, and the described maleic anhydride weighed and styrene is put simultaneously
Entering in described second esterifier, carry out graft copolymerization, the second esterifier is one the anti-of inside and outside cell structure
Answering device, material to be introduced into outdoor, then flow into interior room by the crack on sleeve, interior room is provided with heating coil, and by agitator
Circulating-heating, brings up to 265 DEG C by temperature of charge, and the ethylene glycol of ethylene glycol knockout tower backflow, in interior room, improves reaction mole
Ratio, further speeds up reaction and carries out, and the esterification yield at the second esterifier has reached 96.5%, and it is anti-that pressured difference delivers to precondensation
Answering device, the coil pipe heating of this reactor uses liquid phase heating agent, this reactor jacket and gas phase pipeline heating to use gas phase heating agent, with
Prepolycondensating reactor shares a set of gas phase heating agent reactor, and reactor interior reaction temperature is the magnitude of recruitment by regulating primary fluid
Change what the temperature of secondary heating medium for heating controlled.By the regulation temperature of esterification, pressure, liquid level and ethylene glycol
Capacities of returns etc., can control the esterification yield of the second esterification.
In technique scheme, described first esterification reaction temperature is 245～255 DEG C, and the second esterification reaction temperature is 255
～265 DEG C, the operation pressure of described Prepolycondensating reactor is 9～11kPa, and the operating temperature of described final polycondensation reactor is 265
～275 DEG C.
In technique scheme, described step 5) in, described following process is processed as: carry out pre-crystallized, dry successively
After process, heating fusion plastification and filtration, injection mo(u)lding, obtain end product cross-over block after shaped test.
In technique scheme, described germanium dioxide is can be by the white powder of 800 eye mesh screens；Described antimony acetate energy
Enough by 600 eye mesh screens.
In technique scheme, pre-crystallized and baking temperature is 150 DEG C～170 DEG C, drying time 3～4h.
In technique scheme, the heating-up temperature of described heating fusion plastification is 275 DEG C～285 DEG C.
The prepolymer that Prepolycondensating reactor reaction generates is respectively through melt Sleeve three-way valve discharging, prepolymer discharging pump supercharging
After collecting with melt Sleeve three-way valve afterwards, through prepolymer filter, more specially designed melt jacket pipe is delivered to final minification and is gathered
In reactor.
Precondensation material is continuously fed into final polycondensation reactor, just can arrive final products under stirring and high vacuum condition
Quality.Control pressure, temperature and the time of staying to proper level so that the viscosity measured as the degree of polymerization is adjustable.By regulation
The temperature of heating agent, can regulate temperature of charge in reactor, controls the intrinsic viscosity of outlet material.Being passed through nitrogen, output PET is altogether
Polyester slice.
Pre-crystallized and the drying equipment of PET typically uses with crystallizing bed packed column, is furnished with dry air preparation dress simultaneously
Put, including air compressor machine, molecular sieve moisture separator, heater etc..Pre-crystallized and baking temperature is 150 DEG C～170 DEG C, and drying time is about
3～4h, dried PET section moisture content requires to control 30～50ppm.
The heating-up temperature of described heating fusion plastification is 275 DEG C～285 DEG C, that may be present miscellaneous in order to remove in melt
The foreign bodies such as matter, gel particles, flake, often one filter of each installation, filter heating before and after dosing pump on melt pipeline
Temperature controls at 275 DEG C～285 DEG C.
The cross-over block of the cross-over block present invention that this case prepares, by adding multiple polyhydric alcohol, improves cross-over block
Consistency, which thereby enhance the insulation resistance of cross-over block and mechanical performance by adding polybutylene terephthalate (PBT),
Improve the heat resistance of cross-over block；
Reduce the heat shrinkability of cross-over block simultaneously；Meanwhile, by adding maleic anhydride and styrene, improve absolutely
The toughness reinforcing performance of edge cushion block, tolerance impact strength is higher, and the preparation technology simple possible of the cross-over block of the present invention, it is simple to produce
Industry.
Being the concrete composition of raw materials of different embodiment shown in following table one:
Table one
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details.
Claims (10)
1. a copolyesters electronic isolation cushion block, it is characterised in that composition of raw materials is made up of the material of following weight/mass percentage composition:
Copolyesters electronic isolation cushion block the most according to claim 1, it is characterised in that described germanium dioxide is for passing through
The white powder of 800 eye mesh screens.
Copolyesters electronic isolation cushion block the most according to claim 1, it is characterised in that described antimony acetate can be by 600
Eye mesh screen.
4. the manufacture method of a copolyesters electronic isolation cushion block, it is characterised in that comprise the following steps:
Step 1) weigh in the ratio of composition of raw materials described in claim 1；
Step 2) by the p-phthalic acid weighed, ethylene glycol, 1,4 cyclohexane dimethanol, polypropylene oxide triol, Ji Wusi
The is delivered to after the mixed material mix homogeneously of alcohol, phloroglucitol, antimony acetate, germanium dioxide and trimethyl phosphate composition
One esterifier carries out esterification, generates the first carboxylate；
Step 3) described first carboxylate and described maleic anhydride and the styrene weighed are put into the second esterification simultaneously
Device carries out esterification, generates the second carboxylate；
Step 4) send in Prepolycondensating reactor by the second carboxylate and the described polybutylene terephthalate (PBT) weighed
Row prepolymerization reaction, generates the first prepolymer, described first prepolymer is sent into after prepolymer filter filters final minification and gathers
Reactor carries out whole polycondensation reaction, is finally passed through nitrogen, export copolyester section；
Step 5) described copolyester section is carried out following process process, obtain cross-over block.
5. the manufacture method of copolyesters electronic isolation cushion block as claimed in claim 4, it is characterised in that described step 2) in,
Described mixed material is sent in slurry preparation groove, under the effect of slurry preparation groove agitator, stirs, turning of agitator
Speed is 10r/min, and stirring incorporation time is 3h.
6. the manufacture method of copolyesters electronic isolation cushion block as claimed in claim 5, it is characterised in that described first esterification is anti-
Answering temperature is 245～255 DEG C, and the second esterification reaction temperature is 255～265 DEG C, and the operation pressure of described Prepolycondensating reactor is 9
～11kPa, the operating temperature of described final polycondensation reactor is 265～275 DEG C.
7. the manufacture method of copolyesters electronic isolation cushion block as claimed in claim 6, it is characterised in that described step 5) in,
Described following process is processed as: after carrying out pre-crystallized, dried, heating fusion plastification successively and filtering, injection mo(u)lding, warp
End product cross-over block is obtained after shaping test.
8. the manufacture method of copolyesters electronic isolation cushion block as claimed in claim 7, it is characterised in that described germanium dioxide is
Can be by the white powder of 800 eye mesh screens；Described antimony acetate can pass through 600 eye mesh screens.
9. the manufacture method of copolyesters electronic isolation cushion block as claimed in claim 8, it is characterised in that pre-crystallized and dry temperature
Degree is 150 DEG C～170 DEG C, drying time 3～4h.
10. the manufacture method of copolyesters electronic isolation cushion block as claimed in claim 9, it is characterised in that described in add heat fusing
The heating-up temperature of plasticizing is 275 DEG C～285 DEG C.
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| CN201610653611.5A CN106188553A (en) | 2016-08-11 | 2016-08-11 | Copolyesters electronic isolation cushion block and manufacture method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101906064B1 (en) | 2017-07-25 | 2018-10-08 | 송기용 | Low temperature curable organic dielectrics composition and method for preparing organic insulating film using the same |
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