CN104582032B - A kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable - Google Patents
A kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable Download PDFInfo
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- CN104582032B CN104582032B CN201310483345.2A CN201310483345A CN104582032B CN 104582032 B CN104582032 B CN 104582032B CN 201310483345 A CN201310483345 A CN 201310483345A CN 104582032 B CN104582032 B CN 104582032B
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- vinyl acetate
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Abstract
The invention discloses a kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable, wherein, Kynoar forms matrix with ethylene-vinyl acetate copolymer, Kynoar is 1:3 1:4 with the weight ratio of ethylene-vinyl acetate copolymer, carbon black addition in the base is 25 34wt%, tribasic lead sulfate addition in the base is 0.08 0.1wt%, styrenated phenol addition in the base is 0.16 0.2wt%, and salicylic acid is 0.09 0.11wt% to tert-butyl benzene fat addition in the base.The invention also discloses and a kind of prepare the method for high molecular based PTC composite in above-mentioned high temperature modification high polymer self-limiting temperature accompanying-heat cable.
Description
Technical field
The present invention relates to accompanying-heat cable technical field, particularly relate to a kind of high temperature modification high polymer self-limiting temperature heat tracing electricity
Cable.
Background technology
Accompanying-heat cable is widely used in many fields, as mainly utilized in oil, chemical industry, heat in industrial aspect
Power plant etc. need to prevent the place that the liquid substance solidification/flowing velocity in pipeline or tank is slow, in communal facility side
Face is mainly used in the heat tracing of fire protection pipeline, civilian aspect can be used for heating of house and winter yard piping prevent
Freeze aspect.The core of accompanying-heat cable is its structure and makes the PTC(Positive of its electrothermal part
Temperature Coefficient) material.Ptc material refers to that the resistance value of material rises with the rising of temperature
A kind of thermo-sensitive material, i.e. the resistance of material or resistivity within the scope of a certain specific temperature time substantially keep
Constant or only small quantity change, and when temperature reaches near certain specific knee pointy temperature of material,
The resistivity of material can be undergone mutation within the scope of the narrow temperature in several years or ten several years, and resistivity increases rapidly
Big 103-109The order of magnitude.
Ptc material is broadly divided into ceramic base ptc material and high molecular based PTC material two types.Wherein, high
Molecule matrix PTC material owing to having easily processing, manufacturing cost is relatively low, conductive extensions is big, room temperature resistivity is low
Huge using value is demonstrated etc. advantage.But, in prior art, high molecular based PTC material and height
Molecule accompanying-heat cable there is also the defect that PTC transition temperature is relatively low, low-temperature resistance is higher.
Summary of the invention
In order to solve technical problem present in background technology, the present invention propose a kind of high temperature modification macromolecule from
Limit temperature accompanying-heat cable, it is achieved that the performance boost to accompanying-heat cable, its simple in construction, PTC transition temperature is high,
Low-temperature resistance is low.
A kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable that the present invention proposes, including PTC core ribbon, wraps successively
Overlaying on the insulating barrier outside described PTC core ribbon, metal screen layer and wear-resistance protective sleeve layer, PTC core ribbon is parallel by two
The heating-wire arranged is constituted with the ptc layer being coated on outside it；Ptc material uses high molecular based PTC multiple
Condensation material, high molecular based PTC composite by Kynoar, ethylene-vinyl acetate copolymer, carbon black,
Tribasic lead sulfate, styrenated phenol, salicylic acid p-tert-butyl benzene fat, wherein, Kynoar and second
Alkene-acetate ethylene copolymer composition matrix, Kynoar with the weight ratio of ethylene-vinyl acetate copolymer is
1:3-1:4, carbon black addition in the base is 25-34wt%, tribasic lead sulfate addition in the base
For 0.08-0.1wt%, styrenated phenol addition in the base is 0.16-0.2wt%, and salicylic acid is p-
Tert-butyl benzene fat addition in the base is 0.09-0.11wt%.
Preferably, Kynoar is 1:3 with the weight ratio of ethylene-vinyl acetate copolymer.
Preferably, carbon black addition in the base is 26wt%.
Preferably, tribasic lead sulfate addition in the base is 0.1wt%.
Preferably, styrenated phenol addition in the base is 0.16wt%.
Preferably, salicylic acid p-tert-butyl benzene fat addition in the base is 0.11wt%.
A kind of prepare the method for high molecular based PTC composite in high temperature modification high polymer self-limiting temperature accompanying-heat cable,
Comprise the following steps:
1) Kynoar and ethylene-vinyl acetate copolymer are weighed by weight, reference Kynoar,
The amount of weighing of ethylene-vinyl acetate copolymer, weighs carbon black, tribasic lead sulfate, styrol by addition
Phenol, salicylic acid p-tert-butyl benzene fat；
2) by p-to the carbon black weighed in step 1), tribasic lead sulfate, styrenated phenol, salicylic acid
Tert-butyl benzene fat puts into batch mixing 5-10 minute in batch mixer；
3) by the Kynoar weighed in step 1) and ethylene-vinyl acetate copolymer, put in mixing roll,
At 180 DEG C after mixing 5-7 minute, by step 2) in obtain carbon black, tribasic lead sulfate, styrol
Phenol, salicylic acid p-tert-butyl benzene lipoprotein mixture adds mixing 15-20 minute of continuation, cooling, pelletizing.
In the present invention, by employing Kynoar as main matrix material, due to the fusing point of Kynoar
Higher, and the resistance of ptc material is ramping up being that organic material expands the conductive mesh cutting off conducting particles formation
Network causes, it is thus possible to improve the PTC transition temperature of material；By using ethylene-vinyl acetate copolymer,
Carbon black can be soaked, permeate the air getting rid of carbon black aggregate surface, thus by agglomerate, group
Aggressiveness is dispersed into particle tiny, stable, uniform, improves the dispersiveness of carbon black, and the low temperature promoting material is led
Electrical property and stability, meanwhile, use ethylene-vinyl acetate copolymer and Kynoar collectively as matrix,
Carbon black particle generation Application can be made, thus improve the percolation threshold of carbon black particle, improve electric conductivity
Energy；The interpolation of tribasic lead sulfate with the heat endurance of reinforcing material, thus can prevent the high temperature time property of material
Can be impaired, styrenated phenol, salicylic acid p-tert-butyl benzene fat can improve in material preparation process respectively
Oxidation resistance and photostability.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable that the present invention proposes；
Fig. 2 is that the one that the present invention proposes prepares high molecular based PTC in high temperature modification high polymer self-limiting temperature accompanying-heat cable
The method of composite.
Detailed description of the invention
As it is shown in figure 1, the knot of a kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable that Fig. 1 is the present invention to be proposed
Structure schematic diagram.
Reference Fig. 1, a kind of high temperature modification high polymer self-limiting temperature accompanying-heat cable that the present invention proposes, including PTC core ribbon,
It is coated on the insulating barrier 3 outside described PTC core ribbon, metal screen layer 4 and wear-resistance protective sleeve layer 5, PTC core successively
Band is made up of ptc layer 2 that two heating-wires being arranged in parallel 1 are outer with being coated on it；Ptc material is adopted
Use high molecular based PTC composite；
High molecular based PTC composite is by Kynoar, ethylene-vinyl acetate copolymer, carbon black, three alkali
Formula lead sulfate, styrenated phenol, salicylic acid p-tert-butyl benzene fat, wherein, Kynoar and ethene-
Acetate ethylene copolymer composition matrix, Kynoar with the weight ratio of ethylene-vinyl acetate copolymer is
1:3-1:4, carbon black addition in the base is 25-34wt%, tribasic lead sulfate addition in the base
For 0.08-0.1wt%, styrenated phenol addition in the base is 0.16-0.2wt%, and salicylic acid is p-
Tert-butyl benzene fat addition in the base is 0.09-0.11wt%.
In a kind of specific embodiment, Kynoar is 1:3 with the weight ratio of ethylene-vinyl acetate copolymer,
Carbon black addition in the base is 26wt%, and tribasic lead sulfate addition in the base is 0.1wt%,
Styrenated phenol addition in the base is 0.16wt%, and salicylic acid p-tert-butyl benzene fat is in the base
Addition is 0.11wt%.
At another kind of specific embodiment, Kynoar is 2:7 with the weight ratio of ethylene-vinyl acetate copolymer,
Carbon black addition in the base is 29wt%, and tribasic lead sulfate addition in the base is 0.08wt%,
Styrenated phenol addition in the base is 0.18wt%, and salicylic acid p-tert-butyl benzene fat is in the base
Addition is 0.09wt%.
In another specific embodiment, Kynoar with the weight ratio of ethylene-vinyl acetate copolymer is
1:4, carbon black addition in the base is 34wt%, and tribasic lead sulfate addition in the base is
0.09wt%, styrenated phenol addition in the base is 0.2wt%, and salicylic acid p-tert-butyl benzene fat exists
Addition in matrix is 0.1wt%.
In the present invention, by employing Kynoar as main matrix material, due to melting of Kynoar
Point is higher, and the resistance of ptc material is ramping up being that organic material expands the conduction cutting off conducting particles formation
Network causes, it is thus possible to improve the PTC transition temperature of material；By using ethene-vinyl acetate copolymerization
Thing, can soak carbon black, permeate the air getting rid of carbon black aggregate surface, thus by agglomerate,
Aggregate is dispersed into particle tiny, stable, uniform, improves the dispersiveness of carbon black, promotes the low temperature of material
Electric conductivity and stability, meanwhile, use ethylene-vinyl acetate copolymer and Kynoar collectively as base
Body, can make carbon black particle generation Application, thus improve the percolation threshold of carbon black particle, and raising is led
Electrical property；The interpolation of tribasic lead sulfate with the heat endurance of reinforcing material, thus can prevent the high temperature of material
Time performance impairment, styrenated phenol, salicylic acid p-tert-butyl benzene fat can improve material preparation process respectively
In oxidation resistance and photostability.
As in figure 2 it is shown, Fig. 2 is the one that the present invention proposes prepares high temperature modification high polymer self-limiting temperature accompanying-heat cable
The method of middle high molecular based PTC composite.
With reference to Fig. 2, the invention allows for one and prepare macromolecule in high temperature modification high polymer self-limiting temperature accompanying-heat cable
The method of base PTC composite material, comprises the steps:
1) Kynoar and ethylene-vinyl acetate copolymer are weighed by weight, reference Kynoar,
The amount of weighing of ethylene-vinyl acetate copolymer, weighs carbon black, tribasic lead sulfate, styrol by addition
Phenol, salicylic acid p-tert-butyl benzene fat；
2) by p-to the carbon black weighed in step 1), tribasic lead sulfate, styrenated phenol, salicylic acid
Tert-butyl benzene fat puts into batch mixing 5 minutes in batch mixer；
3) by the Kynoar weighed in step 1) and ethylene-vinyl acetate copolymer, put in mixing roll,
At 180 DEG C after mixing 5 minutes, by step 2) in obtain carbon black, tribasic lead sulfate, styrol benzene
Phenol, salicylic acid p-tert-butyl benzene lipoprotein mixture adds mixing 15 minutes of continuation, cooling, pelletizing.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (7)
1. a high temperature modification high polymer self-limiting temperature accompanying-heat cable, it is characterised in that include PTC core ribbon, successively
Insulating barrier (3), metal screen layer (4) and wear-resistance protective sleeve layer (5), the PTC being coated on outside described PTC core ribbon
Core ribbon is by two heating-wires being arranged in parallel (1) and is coated on its outer ptc layer (2) and constitutes；
Ptc material use high molecular based PTC composite, high molecular based PTC composite by Kynoar,
The p-tertiary fourth of ethylene-vinyl acetate copolymer, carbon black, tribasic lead sulfate, styrenated phenol, salicylic acid
Base benzene fat forms, and wherein, Kynoar forms matrix, Kynoar with ethylene-vinyl acetate copolymer
Being 1:3-1:4 with the weight ratio of ethylene-vinyl acetate copolymer, carbon black addition in the base is
25-34wt%, tribasic lead sulfate addition in the base is 0.08-0.1wt%, and styrenated phenol exists
Addition in matrix is 0.16-0.2wt%, and salicylic acid p-tert-butyl benzene fat addition in the base is
0.09-0.11wt%.
High temperature modification high polymer self-limiting temperature accompanying-heat cable the most according to claim 1, it is characterised in that poly-inclined
PVF is 1:3 with the weight ratio of ethylene-vinyl acetate copolymer.
High temperature modification high polymer self-limiting temperature accompanying-heat cable the most according to claim 1, it is characterised in that carbon
Black addition in the base is 26wt%.
High temperature modification high polymer self-limiting temperature accompanying-heat cable the most according to claim 1, it is characterised in that three
Basic lead sulphate addition in the base is 0.1wt%.
High temperature modification high polymer self-limiting temperature accompanying-heat cable the most according to claim 1, it is characterised in that benzene
Vinylation phenol addition in the base is 0.16wt%.
High temperature modification high polymer self-limiting temperature accompanying-heat cable the most according to claim 1, it is characterised in that water
Poplar acid p-tert-butyl benzene fat addition in the base is 0.11wt%.
7. in the high temperature modification high polymer self-limiting temperature accompanying-heat cable that a kind is prepared as described in any one of claim 1-6
The method of high molecular based PTC composite, it is characterised in that comprise the following steps:
1) Kynoar and ethylene-vinyl acetate copolymer are weighed by weight, reference Kynoar,
The amount of weighing of ethylene-vinyl acetate copolymer, weighs carbon black, tribasic lead sulfate, styrol by addition
Phenol, salicylic acid p-tert-butyl benzene fat；
2) by step 1) in the carbon black that weighs, tribasic lead sulfate, styrenated phenol, salicylic acid p-
Tert-butyl benzene fat puts into batch mixing 5-10 minute in batch mixer；
3) by step 1) in the Kynoar that weighs and ethylene-vinyl acetate copolymer, put into mixing roll
In, at 180 DEG C after mixing 5-7 minute, by step 2) in obtain carbon black, tribasic lead sulfate, benzene second
Alkylene phenol, salicylic acid p-tert-butyl benzene lipoprotein mixture adds mixing 15-20 minute of continuation, cooling, pelletizing.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795507A (en) * | 2010-01-20 | 2010-08-04 | 芜湖市科阳电热材料有限责任公司 | 90-degree special temperature selflimiting electric tracing band |
| CN103113668A (en) * | 2013-01-07 | 2013-05-22 | 安邦电气集团有限公司 | Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100597448B1 (en) * | 2000-02-16 | 2006-07-05 | 삼성토탈 주식회사 | Incombustible polyolefin resin composition |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795507A (en) * | 2010-01-20 | 2010-08-04 | 芜湖市科阳电热材料有限责任公司 | 90-degree special temperature selflimiting electric tracing band |
| CN103113668A (en) * | 2013-01-07 | 2013-05-22 | 安邦电气集团有限公司 | Polymer matrix conductive composite material and method for preparing temperature self-limiting heat tracing cable from same |
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| CN104582032A (en) | 2015-04-29 |
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