CN106169343A - A kind of PTC themistor core being applied to electric heater - Google Patents
A kind of PTC themistor core being applied to electric heater Download PDFInfo
- Publication number
- CN106169343A CN106169343A CN201610649738.XA CN201610649738A CN106169343A CN 106169343 A CN106169343 A CN 106169343A CN 201610649738 A CN201610649738 A CN 201610649738A CN 106169343 A CN106169343 A CN 106169343A
- Authority
- CN
- China
- Prior art keywords
- parts
- powder
- core
- electric heater
- ptc themistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/027—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/006—Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistor chips
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Thermistors And Varistors (AREA)
Abstract
The present invention relates to PTC themistor production technical field, be specifically related to a kind of PTC themistor core being applied to electric heater.Described core is made up of the raw material of following weight portion: metallocene linear-low density polyethylene 50 parts, mixes iodine polyacetylene 10 18 parts, nano imvite 58 parts, lauric acid amide of ethanol 13 parts, epoxy tetrahydro-2-ethylhexyl phthalate 14 parts, electric conductive oxidation tin powder 12 parts, titanium diboride powder 13 parts, copper powder 13 parts, dibutyl tin laurate 0.5 2 parts, stannous chloride 12 parts, triethylene tetramine 24 parts, zinc fluoride 0.5 1 parts, p-t-Butylbenzaldehyde 25 parts, PEG400 37 parts.The core resistance stability that the present invention provides is good, and temperature rise is uniform, and tensile strength is high.
Description
Technical field
The present invention relates to PTC themistor production technical field, be specifically related to a kind of PTC heat being applied to electric heater
Sensitive resistor core.
Background technology
PTC electric heater is by using the PTC-ceramic critesistor element as heating, with ripple aluminum strip through high temperature gluing
Conjunction forms, and is a compact conformation, and volume is little, simple installation, the heating equipment of safety durable.
Core component in PTC electric heater i.e. PTC themistor core, current domestic PTC themistor core
Material still uses the formula of the eighties of last century nineties, adds the restriction aborning due to processing conditions and environmental condition, makes product
The tensile strength performance of product is the highest, simultaneously in the crystallization behavior instability of product, crystallization imperfection, and PTC core material
Portion's residual thermal stress, this all can make the resistance instability of PTC core, gradient of temperature is uneven, ptc characteristics is unstable, ptc characteristics
Repeatability declines, thus further shortens the service life of core.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of core resistance stability good, temperature rise is uniform, and stretch-proof is strong
Spend the high PTC themistor core being applied to electric heater.
For realizing object above, the present invention is achieved by the following technical programs:
A kind of PTC themistor core being applied to electric heater, is made up of the raw material of following weight portion: metallocene line
Property Low Density Polyethylene 50 parts, mixes iodine polyacetylene 10-18 part, nano imvite 5-8 part, lauric acid amide of ethanol 1-3 part, ring
Oxygen tetrahydro-2-ethylhexyl phthalate 1-4 part, electricity oxygen leading tin powder 1-2 part, titanium diboride powder 1-3 part, copper powder 1-3 part,
Dibutyl tin laurate 0.5-2 part, stannous chloride 1-2 part, triethylene tetramine 2-4 part, zinc fluoride 0.5-1 part, to the tert-butyl group
Benzaldehyde 2-5 part, PEG400 3-7 part.
Further, described PTC themistor core, it is made up of the raw material of following weight portion: metallocene linear is low
Density polyethylene 50 parts, mixes iodine polyacetylene 12-16 part, nano imvite 6-7 part, lauric acid amide of ethanol 1-2 part, epoxy four
Hydrogen dioctyl phthalate 2-3 part, electric conductive oxidation tin powder 1-2 part, titanium diboride powder 2-3 part, copper powder 1-2 part, February
Dilaurylate 1-2 part, stannous chloride 1-2 part, triethylene tetramine 3-4 part, zinc fluoride 0.5-1 part, p-t-Butylbenzaldehyde
3-4 part, PEG400 5-6 part.
Further, the described PTC themistor core being applied to electric heater, by the raw material group of following weight portion
Become: metallocene linear-low density polyethylene 50 parts, mix iodine polyacetylene 12 parts, nano imvite 6 parts, lauric acid amide of ethanol 1
Part, epoxy tetrahydro-2-ethylhexyl phthalate 2 parts, electric conductive oxidation tin powder 1 part, titanium diboride powder 2 parts, copper powder 1 part, February
Dilaurylate 1 part, stannous chloride 1 part, triethylene tetramine 3 parts, zinc fluoride 0.5 part, p-t-Butylbenzaldehyde 3 parts, poly-second
Glycol 400 5 parts.
Further, the preparation method of the described PTC themistor core being applied to electric heater, including walking as follows
Rapid:
S1, weigh each raw material by the weight portion of constitutive material, by nano imvite, electric conductive oxidation tin powder, titanium diboride
Powder, copper powder, stannous chloride and zinc fluoride mix homogeneously, calcine 2-3h under conditions of 215-355 DEG C, cool down standby；
S2, by step S1 products therefrom and p-t-Butylbenzaldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy four
Hydrogen dioctyl phthalate, triethylene tetramine and dibutyl tin laurate mixing, with the stirring speed of 1500-2000r/min
Degree stirring 0.5-1h；
S3, by step S2 products therefrom and metallocene linear-low density polyethylene with mix iodine polyacetylene and mix and put into high-speed stirring
Mix stirring 3-10min in machine, take out, use double screw extruder extruding pelletization, obtain product.
Further, in described step S1 after mixture cooling, it is ground into the powder of 400-800 mesh.
Further, in described step S2, whipping temp is 50-60 DEG C.
The invention have the benefit that
The present invention uses metallocene linear-low density polyethylene and mixes iodine polyacetylene as major ingredient, with the addition of nanometer simultaneously and covers
De-soil, electric conductive oxidation tin powder, titanium diboride powder and copper powder, improve elastic modelling quantity and the breakaway poing stress value of core, have
Help reinforcing material stretch-proof performance own；Nano imvite, electric conductive oxidation tin powder, titanium diboride powder, copper powder, protochloride
Through pulverizing after stannum and zinc fluoride calcining, the compatible and intermolecular network between composition can be increased, and to tert-butyl benzene first
Aldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy tetrahydro-2-ethylhexyl phthalate, triethylene tetramine and tin dilaurate two
Butyl tin carries out a batch mixing, has and strengthens effect that is heat-resisting and that improve resistance variations stability so that PTC core characteristic is steady
Fixed, service life is long.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the enforcement of the present invention
Example, is clearly and completely described the technical scheme in the embodiment of the present invention.Based on the embodiment in the present invention, this area
The every other embodiment that those of ordinary skill is obtained under not making creative work premise, broadly falls into present invention protection
Scope.
Embodiment 1:
A kind of PTC themistor core being applied to electric heater, is made up of the raw material of following weight portion: metallocene line
Property Low Density Polyethylene 50 parts, mixes iodine polyacetylene 12 parts, nano imvite 6 parts, lauric acid amide of ethanol 1 part, epoxy tetrahydrochysene
Dioctyl phthalate 2 parts, electric conductive oxidation tin powder 1 part, titanium diboride powder 2 parts, copper powder 1 part, di lauric dibutyl
1 part of stannum, stannous chloride 1 part, triethylene tetramine 3 parts, zinc fluoride 0.5 part, p-t-Butylbenzaldehyde 3 parts, PEG400 5
Part.
Its preparation method, comprises the steps:
S1, weigh each raw material by the weight portion of constitutive material, by nano imvite, electric conductive oxidation tin powder, titanium diboride
Powder, copper powder, stannous chloride and zinc fluoride mix homogeneously, calcine 2.5h, cooling under conditions of 220 DEG C, be ground into 400-800
Purpose powder, standby；
S2, by step S1 products therefrom and p-t-Butylbenzaldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy four
Hydrogen dioctyl phthalate, triethylene tetramine and dibutyl tin laurate mixing, with the mixing speed of 1500r/min 55
1h is stirred under conditions of DEG C；
S3, by step S2 products therefrom and metallocene linear-low density polyethylene with mix iodine polyacetylene and mix and put into high-speed stirring
Mix stirring 5min in machine, take out, use double screw extruder extruding pelletization, obtain product.
Embodiment 2:
A kind of PTC themistor core being applied to electric heater, is made up of the raw material of following weight portion: metallocene line
Property Low Density Polyethylene 50 parts, mixes iodine polyacetylene 10 parts, nano imvite 8 parts, lauric acid amide of ethanol 1 part, epoxy tetrahydrochysene
Dioctyl phthalate 4 parts, electricity oxygen leading tin powder 1 part, titanium diboride powder 3 parts, copper powder 1 part, di lauric dibutyl
2 parts of stannum, stannous chloride 1 part, triethylene tetramine 4 parts, zinc fluoride 0.5 part, p-t-Butylbenzaldehyde 5 parts, PEG400 3
Part.
Its preparation method, comprises the steps:
S1, weigh each raw material by the weight portion of constitutive material, by nano imvite, electric conductive oxidation tin powder, titanium diboride
Powder, copper powder, stannous chloride and zinc fluoride mix homogeneously, calcine 3h, cooling under conditions of 215 DEG C, be ground into 400-800 mesh
Powder, standby；
S2, by step S1 products therefrom and p-t-Butylbenzaldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy four
Hydrogen dioctyl phthalate, triethylene tetramine and dibutyl tin laurate mixing, with the mixing speed of 1800r/min 55
1h is stirred under conditions of DEG C；
S3, by step S2 products therefrom and metallocene linear-low density polyethylene with mix iodine polyacetylene and mix and put into high-speed stirring
Mix stirring 3min in machine, take out, use double screw extruder extruding pelletization, obtain product.
Embodiment 3:
A kind of PTC themistor core being applied to electric heater, is made up of the raw material of following weight portion: metallocene line
Property Low Density Polyethylene 50 parts, mixes iodine polyacetylene 16 parts, nano imvite 7 parts, lauric acid amide of ethanol 2 parts, epoxy tetrahydrochysene
Dioctyl phthalate 3 parts, electric conductive oxidation tin powder 2 parts, titanium diboride powder 3 parts, copper powder 2 parts, di lauric dibutyl
2 parts of stannum, stannous chloride 2 parts, triethylene tetramine 4 parts, zinc fluoride 1 part, p-t-Butylbenzaldehyde 4 parts, PEG400 6 parts.
Its preparation method, comprises the steps:
S1, weigh each raw material by the weight portion of constitutive material, by nano imvite, electric conductive oxidation tin powder, titanium diboride
Powder, copper powder, stannous chloride and zinc fluoride mix homogeneously, calcine 2.5h, cooling under conditions of 285 DEG C, be ground into 400-800
Purpose powder, standby；
S2, by step S1 products therefrom and p-t-Butylbenzaldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy four
Hydrogen dioctyl phthalate, triethylene tetramine and dibutyl tin laurate mixing, with the mixing speed of 2000r/min 60
0.5h is stirred under conditions of DEG C；
S3, by step S2 products therefrom and metallocene linear-low density polyethylene with mix iodine polyacetylene and mix and put into high-speed stirring
Mix stirring 10min in machine, take out, use double screw extruder extruding pelletization, obtain product.
Embodiment 4:
A kind of PTC themistor core being applied to electric heater, is made up of the raw material of following weight portion: metallocene line
Property Low Density Polyethylene 50 parts, mixes iodine polyacetylene 18 parts, nano imvite 5 parts, lauric acid amide of ethanol 3 parts, epoxy tetrahydrochysene
Dioctyl phthalate 1 part, electricity oxygen leading tin powder 2 parts, titanium diboride powder 1 part, copper powder 3 parts, di lauric dibutyl
0.5 part of stannum, stannous chloride 2 parts, triethylene tetramine 2 parts, zinc fluoride 1 part, p-t-Butylbenzaldehyde 2 parts, PEG400 7
Part.
Its preparation method, comprises the steps:
S1, weigh each raw material by the weight portion of constitutive material, by nano imvite, electric conductive oxidation tin powder, titanium diboride
Powder, copper powder, stannous chloride and zinc fluoride mix homogeneously, calcine 2h, cooling under conditions of 355 DEG C, be ground into 400-800 mesh
Powder, standby；
S2, by step S1 products therefrom and p-t-Butylbenzaldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy four
Hydrogen dioctyl phthalate, triethylene tetramine and dibutyl tin laurate mixing, with the mixing speed of 1600r/min 50
0.5h is stirred under conditions of DEG C；
S3, by step S2 products therefrom and metallocene linear-low density polyethylene with mix iodine polyacetylene and mix and put into high-speed stirring
Mix stirring 7min in machine, take out, use double screw extruder extruding pelletization, obtain product.
Above example only in order to technical scheme to be described, is not intended to limit；Although with reference to previous embodiment
The present invention is described in detail, it will be understood by those within the art that: it still can be to aforementioned each enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent；And these amendment or
Replace, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. the PTC themistor core being applied to electric heater, it is characterised in that by the raw material group of following weight portion
Become: metallocene linear-low density polyethylene 50 parts, mix iodine polyacetylene 10-18 part, nano imvite 5-8 part, coconut oil diethanol
Amide 1-3 part, epoxy tetrahydro-2-ethylhexyl phthalate 1-4 part, electric conductive oxidation tin powder 1-2 part, titanium diboride powder 1-3
Part, copper powder 1-3 part, dibutyl tin laurate 0.5-2 part, stannous chloride 1-2 part, triethylene tetramine 2-4 part, zinc fluoride 0.5-
1 part, p-t-Butylbenzaldehyde 2-5 part, PEG400 3-7 part.
It is applied to the PTC themistor core of electric heater the most as claimed in claim 1, it is characterised in that by weighing as follows
The raw material composition of amount part: metallocene linear-low density polyethylene 50 parts, mixes iodine polyacetylene 12-16 part, nano imvite 6-7 part,
Lauric acid amide of ethanol 1-2 part, epoxy tetrahydro-2-ethylhexyl phthalate 2-3 part, electric conductive oxidation tin powder 1-2 part, two boron
Change titanium powder 2-3 part, copper powder 1-2 part, dibutyl tin laurate 1-2 part, stannous chloride 1-2 part, triethylene tetramine 3-4 part,
Zinc fluoride 0.5-1 part, p-t-Butylbenzaldehyde 3-4 part, PEG400 5-6 part.
It is applied to the PTC themistor core of electric heater the most as claimed in claim 2, it is characterised in that by weighing as follows
The raw material composition of amount part: metallocene linear-low density polyethylene 50 parts, mixes iodine polyacetylene 12 parts, nano imvite 6 parts, coconut oil
Diglycollic amide 1 part, epoxy tetrahydro-2-ethylhexyl phthalate 2 parts, electric conductive oxidation tin powder 1 part, titanium diboride powder 2 parts,
Copper powder 1 part, dibutyl tin laurate 1 part, stannous chloride 1 part, triethylene tetramine 3 parts, zinc fluoride 0.5 part, to tert-butyl benzene
3 parts of formaldehyde, PEG400 5 parts.
4. the preparation method of the PTC themistor core being applied to electric heater as according to any one of claim 1-3,
It is characterized in that, comprise the steps:
S1, weigh each raw material by the weight portion of constitutive material, by nano imvite, electric conductive oxidation tin powder, titanium diboride powder,
Copper powder, stannous chloride and zinc fluoride mix homogeneously, calcine 2-3h under conditions of 215-355 DEG C, cool down standby；
S2, by step S1 products therefrom and p-t-Butylbenzaldehyde, Polyethylene Glycol, lauric acid amide of ethanol, epoxy tetrahydrochysene is adjacent
Dioctyl phthalate, triethylene tetramine and dibutyl tin laurate mixing, stir with the mixing speed of 1500-2000r/min
Mix 0.5-1h；
S3, by step S2 products therefrom and metallocene linear-low density polyethylene with mix iodine polyacetylene and mix and put into homogenizer
Middle stirring 3-10min, takes out, uses double screw extruder extruding pelletization, obtain product.
Being applied to the preparation method of the PTC themistor core of electric heater the most as claimed in claim 4, its feature exists
In, in described step S1 after mixture cooling, it is ground into the powder of 400-800 mesh.
Being applied to the preparation method of the PTC themistor core of electric heater the most as claimed in claim 4, its feature exists
In, in described step S2, whipping temp is 50-60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649738.XA CN106169343B (en) | 2016-08-09 | 2016-08-09 | A kind of PTC themistor core applied to electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649738.XA CN106169343B (en) | 2016-08-09 | 2016-08-09 | A kind of PTC themistor core applied to electric heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106169343A true CN106169343A (en) | 2016-11-30 |
| CN106169343B CN106169343B (en) | 2018-02-16 |
Family
ID=58066223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610649738.XA Active CN106169343B (en) | 2016-08-09 | 2016-08-09 | A kind of PTC themistor core applied to electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106169343B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766692A (en) * | 2018-05-25 | 2018-11-06 | 江苏湃特瑞电器有限公司 | A kind of PTC thermistor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176360A (en) * | 2011-02-22 | 2011-09-07 | 深圳市长园维安电子有限公司 | PTC thermistor and substrate applied therein and manufacturing method thereof |
| CN103304873A (en) * | 2013-05-24 | 2013-09-18 | 安邦电气集团有限公司 | PTC (Positive Temperature Coefficient) macromolecular composite heating material based on iron and copper powder and preparation method thereof |
| CN103333384A (en) * | 2013-05-29 | 2013-10-02 | 安徽荣玖光纤通信科技有限公司 | Stretch resistance PTC polymer conductive material and preparation method thereof |
| CN103333400A (en) * | 2013-05-29 | 2013-10-02 | 安徽荣玖光纤通信科技有限公司 | PTC polymer conductive material adopting linear low-density polyethylene as main material and preparation method thereof |
| CN103333388A (en) * | 2013-05-29 | 2013-10-02 | 安徽荣玖光纤通信科技有限公司 | PTC polymer conductive material adopting metallocene polyethylene as main material and preparation method thereof |
-
2016
- 2016-08-09 CN CN201610649738.XA patent/CN106169343B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176360A (en) * | 2011-02-22 | 2011-09-07 | 深圳市长园维安电子有限公司 | PTC thermistor and substrate applied therein and manufacturing method thereof |
| CN103304873A (en) * | 2013-05-24 | 2013-09-18 | 安邦电气集团有限公司 | PTC (Positive Temperature Coefficient) macromolecular composite heating material based on iron and copper powder and preparation method thereof |
| CN103333384A (en) * | 2013-05-29 | 2013-10-02 | 安徽荣玖光纤通信科技有限公司 | Stretch resistance PTC polymer conductive material and preparation method thereof |
| CN103333400A (en) * | 2013-05-29 | 2013-10-02 | 安徽荣玖光纤通信科技有限公司 | PTC polymer conductive material adopting linear low-density polyethylene as main material and preparation method thereof |
| CN103333388A (en) * | 2013-05-29 | 2013-10-02 | 安徽荣玖光纤通信科技有限公司 | PTC polymer conductive material adopting metallocene polyethylene as main material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766692A (en) * | 2018-05-25 | 2018-11-06 | 江苏湃特瑞电器有限公司 | A kind of PTC thermistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106169343B (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105385016A (en) | Composite material based on ethylene-tetrafluoroethylene copolymer, preparation method and applications thereof | |
| CN102558638B (en) | Positive temperature coefficient material, preparation method thereof and thermistor containing positive temperature coefficient material | |
| CN104292702B (en) | Dynamic vulcanization polychloroethylene with high polymerization degree nitrile (HTBN) wire cable insulating/sheath material and preparation method thereof | |
| CN105017608A (en) | Conductive polymer material and preparation method thereof | |
| CN106169343A (en) | A kind of PTC themistor core being applied to electric heater | |
| CN101928422A (en) | Method for preparing polymer matrix conductive and heating composite film material | |
| CN107129594A (en) | A kind of PVC triazole based composite heat stabilizers | |
| CN108962519B (en) | Preparation method of high-temperature thermistor material | |
| CN103304875B (en) | PTC composite material and preparation method thereof | |
| CN102167858A (en) | Positive temperature coefficient material, preparation method thereof and thermistor containing material | |
| CN106009685A (en) | Compound PTC thermistor heating material | |
| CN102140194A (en) | Material with positive temperature coefficient, preparation method thereof and thermosensitive resistor having same | |
| CN101870783B (en) | Polyvinyl PTC thermo-sensitive conductive composite material and manufacturing method thereof | |
| CN106146984B (en) | A kind of thermistor composite material and preparation method | |
| CN111019336A (en) | PA-ABS alloy material | |
| CN104292592A (en) | Material for self-regulating heating/heat tracing cables and preparation method thereof | |
| CN103694640A (en) | Preparation method of conductive thermo-cured epoxy resin system | |
| CN103304938B (en) | PTC thermistor base material and preparation method thereof | |
| CN103333427B (en) | A kind of aluminum conductor PTC high-molecular conductive material and preparation method thereof | |
| CN102816380B (en) | Heat tracing cable and preparation method thereof | |
| CN103333400B (en) | A kind of LLDPE is PTC macromolecule conducting material of major ingredient and preparation method thereof | |
| CN103333386B (en) | A kind of High-temperature resistance PTC polymer conductive material and preparation method thereof | |
| CN105037871A (en) | PPTC chip and preparation method thereof | |
| CN109825062A (en) | A kind of capacitor potent insulating rubber material and preparation method thereof | |
| CN102702603A (en) | Polyethylene/titanium diboride PTC (Positive Temperature Coefficient) composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |