CN108059762A - A kind of preparation method of fire-resistant cable material - Google Patents
A kind of preparation method of fire-resistant cable material Download PDFInfo
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- CN108059762A CN108059762A CN201711316480.2A CN201711316480A CN108059762A CN 108059762 A CN108059762 A CN 108059762A CN 201711316480 A CN201711316480 A CN 201711316480A CN 108059762 A CN108059762 A CN 108059762A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- 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
- H01B3/44—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 vinyl resins; acrylic resins
- H01B3/441—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 vinyl resins; acrylic resins from alkenes
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K2003/026—Phosphorus
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Abstract
The present invention relates to a kind of CABLE MATERIALSs and preparation method thereof, and in particular to a kind of preparation method of fire-resistant cable material.Present invention sodium aluminate solution and aluminum sulfate neutralization reaction obtain fine aluminium-hydroxide powder through gel crystals.Aluminium-hydroxide powder is modified to obtain fire-resistant cable material with other synergistic flame retardants and matrix resin blending granulation hot pressing.Aluminium-hydroxide powder is coated on EVA resin surface, with being continuously generated for nucleus, the cladded type composite granule of one shell structure of core is ultimately formed, so as to play fire-retardant effect.Aluminium hydroxide, which is filled into matrix resin, forms charring layer, can stop that heat and oxygen enter, and can stop the effusion of the imflammable gas of small molecule.Red phosphorus inhibits the generation of free radical with radical reaction and degradation obtains polyphosphoric acid, and polyphosphoric acid causes fire proofing dehydration carbonization, so that CABLE MATERIALS is difficult to burn, carbon forming rate is high when matrix resin burns, and has broad application prospects.
Description
Technical field
The present invention relates to fire-resistant cable material preparing technical fields, and in particular to a kind of preparation method of fire-resistant cable material.
Background technology
With economic rapid development, electric wire is widely used in industry-by-industry, field.Main application
In connecting line in the machine of the electronic and electrical equipments such as power cable, computer, refrigerator, TV, air-conditioning and outside machine, instrument line, automotive line,
In the production of motor down-lead, mobile phone and laptop line.Wire cable insulating and sheath are commonly called as CABLE MATERIALS with plastics, wherein wrapping
Include a variety of kinds such as rubber, plastics, nylon.In electric wire product in addition to the bare wires product such as steel-cored aluminium strand, electromagnetic wire almost
It is required for insulating layer mouth.Nearly 5000 of China's live wire cable manufacturing enterprise at present, and have upgrading urban and rural power grids, development of the West Regions
And communications facility large area upgrading is to the great demand of electric wire product, thus from the point of view of for a period of time, CABLE MATERIALS exists
China has extensive market development prospect.
CABLE MATERIALS is widely used, also there is special requirement to its performance indicator, for example insulating properties, tensile strength use temperature
Degree, the indexs such as flame retardant property have strict requirements, constantly improve the performance of CABLE MATERIALS, are the urgent of economy and social development
Demand.Traditional CABLE MATERIALS is mostly there are poor fire, the problems such as high temperature is yielding, poor mechanical property, service life is short, to reality
Using bringing many inconvenience or even threaten the security of the lives and property of people.
Therefore it provides a kind of strong CABLE MATERIALS of flame retardant property is current urgent problem to be solved.
The content of the invention
Present invention mainly solves the technical issues of, for CABLE MATERIALS matrix resin easy firing, charing can force difference during burning
Defect provides a kind of preparation method of fire-resistant cable material.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of preparation method of fire-resistant cable material, it is characterised in that specifically preparation process is：
（1）400~500mL sodium hydroxide solutions and 80~90g aluminium hydroxides are mixed, are placed in stainless-steel pan, through resistance furnace
Heat temperature raising boiling, obtains cooking liquor, and cooking liquor is filtered with microporous barrier, solid residue is removed, obtains sodium aluminate solution；
（2）Aluminum sulfate solution and above-mentioned sodium aluminate solution are added in beaker, than mixing to beaker heating water bath liter as isometric
Temperature, after stirring, insulation reaction obtains reaction product, and reaction product is placed in centrifugal treating in supercentrifuge, is separated in removal
Layer liquid, obtains lower sediment thing, precipitate washed with water to cleaning solution is in neutrality, obtain fine aluminium hydroxide；
（3）Fine aluminium hydroxide is placed in baking oven, heat temperature raising, after dry, obtains aluminium hydroxide fine powder, by 120~
140g aluminium hydroxides fine powder is put into colloid mill with 10~12g titanate esters and handles, and obtains activation aluminium-hydroxide powder；
（4）Activation aluminium-hydroxide powder is placed in low speed kneader, configures the ethanol solution of 150~180mL aluminum stearates, spray
It drenches on activation aluminium-hydroxide powder, is stirred, after mixing, heat temperature raising continues to be stirred, and obtains modified hydrogen-oxygen
Change aluminium powder；
（5）It counts in parts by weight, by 70~80 parts of EVA resins, 20~30 parts of linear low density polyethylene, 20~25 parts of modified hydrogen
Alumina powder, 10~15 parts of red phosphorus, which are put into high speed dispersor, to be disperseed to obtain pre-dispersed material, and pre-dispersed material is placed in twin-screw
Extruding pelletization in extruder obtains blending pellet；
（6）Weigh 23~30g blending pellet, be placed in it is framed in, be placed in framed in moulding press, to framed preheating, hot pressing is framed,
It is cold-pressed again with the pressure of 10.0MPa to room temperature and obtains fire-resistant cable material.
Step（1）The mass fraction of the sodium hydroxide solution is 40%, and temperature is 200 after resistance furnace heat temperature raising
~230 DEG C, digestion time is 20~25min.
Step（2）The mass fraction of the aluminum sulfate solution is 30%, to temperature after beaker water-bath heat temperature raising for 70~
75 DEG C, mixing time is 10~15min, and the insulation reaction time is 30~35min, and supercentrifuge rotating speed is 4500~4800r/
Min, centrifugal treating time are 15~20min.
Step（3）After the baking oven heat temperature raising temperature be 80~85 DEG C, drying time be 4~5h, milling treatment of colloid
When glue mill gap be 0.1~0.3mm, the milling treatment of colloid time be 50~55min.
Step（4）The mass fraction of the ethanol solution of the aluminum stearate is 30%, low speed kneader rotating speed for 200~
230r/min is stirred the time as 20~30min, and temperature is 75~90 DEG C after heat temperature raising, speed of agitator for 500~
550r/min is stirred the time as 2~3h.
Step（5）The high speed dispersor rotating speed is 3000~3200r/min, and jitter time is 30~40min.
Step（6）The framed thickness is 1~3mm, and it is 160~180 DEG C that moulding press temperature is adjusted during preheating,
Preheating time is 6~8min, and the framed pressure of hot pressing is 4.5~5.0MPa, and hot pressing time is 4~5min.
The beneficial effects of the invention are as follows：
（1）Sodium aluminate solution is obtained by the reaction with sodium hydroxide solution and aluminium hydroxide in the present invention, sodium aluminate solution and aluminum sulfate
Neutralization reaction obtains fine aluminium-hydroxide powder through gel crystals, and fine aluminium-hydroxide powder is used as matrix after modified
The inorganic filler constituents of resin are granulated with other synergistic flame retardants and matrix resin blending, and hot pressing obtains fire-resistant cable material, EVA
The crystallinity of resin is low, and compatibility is good when inorganic constituents is filled, and fine aluminium-hydroxide powder can be formed on EVA resin surface and wrapped
Coating, according to heterogeneous nucleation mechanism, aluminium-hydroxide powder nucleus can be adsorbed onto EVA resin surface to reduce its energy first,
With being continuously generated for nucleus, nucleus will constantly deposit on nuclear particle surface, ultimately form the cladded type composite powder of nucleocapsid structure
Body, EVA resin are covered by composite granule, and matrix resin is protected during burning, so as to play fire-retardant effect；
（2）When burning starts, aluminium hydroxide starts to decompose when being heated to 220 DEG C or so, releases with reference to water and absorbs largely
Heat makes the reduction of burning position temperature, water vapour is only released, without generating toxic, flammable or mordant gas, hydroxide
The vapor that aluminium decomposition releases can rush the concentration for releasing oxygen in flame region, and have certain cooling effect, hydroxide concurrently
Aluminium is filled into matrix resin, helps to form charring layer during burning, which can not only stop that heat and oxygen entered, but also can
Stop the effusion of the imflammable gas of small molecule, during high-temp combustion, the free radical generated during polyolefin thermal degradation is easily sent out
Raw chain tra nsfer and further trigger the degradation of chain, red phosphorus can react with these free radicals and inhibit free radical generation and
The progress of degradation reaction, and red phosphorus is heated first depolymerization as tetravalence phosphorus, and then phosphoric acid is oxidized to, phosphoric acid absorbs water into polyphosphoric acid, more
Phosphoric acid causes fire proofing dehydration carbonization, so that CABLE MATERIALS is difficult to burn, carbon forming rate is high when matrix resin burns, and has wide
Application prospect.
Specific embodiment
Sodium hydroxide solution and 80~90g aluminium hydroxides that 400~500mL mass fractions are 40% are mixed, are placed in stainless
In steel pot, 200~230 DEG C are heated to through resistance furnace, 20~25min of boiling obtains cooking liquor, with microporous barrier to cooking liquor
Filtering removes solid residue, obtains sodium aluminate solution；By aluminum sulfate solution of the mass fraction for 30% and above-mentioned sodium aluminate solution
By isometric than mixing, add in beaker, 70~75 DEG C are heated to beaker water-bath, after stirring 10~15min, heat preservation is anti-
Answer 30~35min, obtain reaction product, by reaction product be placed in supercentrifuge with the rotating speed of 4500~4800r/min from
The heart handles 15~20min, and separation removal upper liquid obtains lower sediment thing, precipitate washed with water to cleaning solution is in neutrality,
Obtain fine aluminium hydroxide；Fine aluminium hydroxide is placed in baking oven, 80~85 DEG C of heat temperature raising, after dry 4~5h, obtained
To aluminium hydroxide fine powder, by 120~140g aluminium hydroxides fine powder and 10~12g titanate esters be put into colloid mill using glue grind gap as
0.1~0.3mm handles 50~55min, obtains activation aluminium-hydroxide powder；Activation aluminium-hydroxide powder is placed in low speed to mediate
In machine, the ethanol solution for the aluminum stearate that 150~180mL of configuration mass fractions are 30% is sprayed in activation aluminium-hydroxide powder
On, and 20~30min is stirred with the rotating speed of 200~230r/min, after mixing, 75~90 DEG C are heated to, with
The rotating speed of 500~550r/min continues to be stirred 2~3h, obtains modified aluminium hydroxide powder；It counts in parts by weight, by 70~
80 parts of EVA resins, 20~30 parts of linear low density polyethylene, 20~25 parts of modified aluminium hydroxide powder, 10~15 parts of red phosphorus are put
Enter to disperse 30~40min with the rotating speed of 3000~3200r/min in high speed dispersor and obtain pre-dispersed material, pre-dispersed material is placed in
Extruding pelletization in double screw extruder obtains blending pellet；23~30g blending pellets are weighed, are placed in thick framed of 1~3mm,
It is placed in framed in moulding press, it is 160~180 DEG C to adjust moulding press temperature, to 6~8min of framed preheating, with 4.5~5.0MPa
The framed 4~5min of pressure hot pressing, then be cold-pressed with the pressure of 10.0MPa to room temperature and obtain fire-resistant cable material.
Example 1
Sodium hydroxide solution and 80g aluminium hydroxides that 400mL mass fractions are 40% are mixed, are placed in stainless-steel pan, through resistance
Stove heat is warming up to 200 DEG C, and boiling 20min obtains cooking liquor, and cooking liquor is filtered with microporous barrier, solid residue is removed, obtains
Sodium aluminate solution；Mass fraction is mixed for 30% aluminum sulfate solution and above-mentioned sodium aluminate solution by isometric ratio, addition beaker
In, 70 DEG C are heated to beaker water-bath, after stirring 10min, insulation reaction 30min obtains reaction product, by reaction product
It being placed in supercentrifuge with the rotating speed centrifugal treating 15min of 4500r/min, separation removal upper liquid obtains lower sediment thing,
Precipitate washed with water to cleaning solution is in neutrality, obtains fine aluminium hydroxide；Fine aluminium hydroxide is placed in baking oven,
80 DEG C of heat temperature raising after drying 4h, obtains aluminium hydroxide fine powder, and 120g aluminium hydroxides fine powder and 10g titanate esters are put into colloid
Gap is ground as 0.1mm using glue in mill, handles 50min, obtains activation aluminium-hydroxide powder；Activation aluminium-hydroxide powder is placed in low
In fast kneader, the ethanol solution for the aluminum stearate that configuration 150mL mass fractions are 30% is sprayed in activation aluminium-hydroxide powder
On, and 20min is stirred with the rotating speed of 200r/min, after mixing, 75 DEG C are heated to, with the rotating speed of 500r/min
Continue to be stirred 2h, obtain modified aluminium hydroxide powder；It counts in parts by weight, by 70 parts of EVA resins, 20 parts of linea low densities
Polyethylene, 20 parts of modified aluminium hydroxide powder, 10 parts of red phosphorus are put into high speed dispersor and are disperseed with the rotating speed of 3000r/min
30min obtains pre-dispersed material, and pre-dispersed material is placed in extruding pelletization in double screw extruder, obtains blending pellet；23g is weighed to be total to
Mixed pellet is placed in thick framed of 1mm, is placed in framed in moulding press, it is 160 DEG C to adjust moulding press temperature, to framed preheating
6min with the framed 4min of pressure hot pressing of 4.5MPa, then is cold-pressed to room temperature with the pressure of 10.0MPa and obtains fire-resistant cable material.
Example 2
Sodium hydroxide solution and 85g aluminium hydroxides that 450mL mass fractions are 40% are mixed, are placed in stainless-steel pan, through resistance
Stove heat is warming up to 215 DEG C, and boiling 23min obtains cooking liquor, and cooking liquor is filtered with microporous barrier, solid residue is removed, obtains
Sodium aluminate solution；Mass fraction is mixed for 30% aluminum sulfate solution and above-mentioned sodium aluminate solution by isometric ratio, addition beaker
In, 73 DEG C are heated to beaker water-bath, after stirring 13min, insulation reaction 33min obtains reaction product, by reaction product
It being placed in supercentrifuge with the rotating speed centrifugal treating 17min of 4650r/min, separation removal upper liquid obtains lower sediment thing,
Precipitate washed with water to cleaning solution is in neutrality, obtains fine aluminium hydroxide；Fine aluminium hydroxide is placed in baking oven,
83 DEG C of heat temperature raising after drying 4.5h, obtains aluminium hydroxide fine powder, and 130g aluminium hydroxides fine powder and 11g titanate esters are put into glue
Gap is ground as 0.2mm using glue in body mill, handles 53min, obtains activation aluminium-hydroxide powder；Activation aluminium-hydroxide powder is placed in
In low speed kneader, the ethanol solution for the aluminum stearate that configuration 165mL mass fractions are 30% is sprayed in activation aluminium hydrate powder
On end, and 25min is stirred with the rotating speed of 215r/min, after mixing, is heated to 83 DEG C, with turning for 525r/min
Speed continues to be stirred 2.5h, obtains modified aluminium hydroxide powder；It counts in parts by weight, by 75 parts of EVA resins, 25 parts linear low
Density polyethylene, 23 parts of modified aluminium hydroxide powder, 13 parts of red phosphorus are put into high speed dispersor and are disperseed with the rotating speed of 3100r/min
35min obtains pre-dispersed material, and pre-dispersed material is placed in extruding pelletization in double screw extruder, obtains blending pellet；26g is weighed to be total to
Mixed pellet is placed in thick framed of 2mm, is placed in framed in moulding press, it is 170 DEG C to adjust moulding press temperature, to framed preheating
7min with the framed 4min of pressure hot pressing of 4.7MPa, then is cold-pressed to room temperature with the pressure of 10.0MPa and obtains fire-resistant cable material.
Example 3
Sodium hydroxide solution and 90g aluminium hydroxides that 500mL mass fractions are 40% are mixed, are placed in stainless-steel pan, through resistance
Stove heat is warming up to 230 DEG C, and boiling 25min obtains cooking liquor, and cooking liquor is filtered with microporous barrier, solid residue is removed, obtains
Sodium aluminate solution；Mass fraction is mixed for 30% aluminum sulfate solution and above-mentioned sodium aluminate solution by isometric ratio, addition beaker
In, 75 DEG C are heated to beaker water-bath, after stirring 15min, insulation reaction 35min obtains reaction product, by reaction product
It being placed in supercentrifuge with the rotating speed centrifugal treating 20min of 4800r/min, separation removal upper liquid obtains lower sediment thing,
Precipitate washed with water to cleaning solution is in neutrality, obtains fine aluminium hydroxide；Fine aluminium hydroxide is placed in baking oven,
85 DEG C of heat temperature raising after drying 5h, obtains aluminium hydroxide fine powder, and 140g aluminium hydroxides fine powder and 12g titanate esters are put into colloid
Gap is ground as 0.3mm using glue in mill, handles 55min, obtains activation aluminium-hydroxide powder；Activation aluminium-hydroxide powder is placed in low
In fast kneader, the ethanol solution for the aluminum stearate that configuration 180mL mass fractions are 30% is sprayed in activation aluminium-hydroxide powder
On, and 30min is stirred with the rotating speed of 230r/min, after mixing, 90 DEG C are heated to, with the rotating speed of 550r/min
Continue to be stirred 3h, obtain modified aluminium hydroxide powder；It counts in parts by weight, by 80 parts of EVA resins, 30 parts of linea low densities
Polyethylene, 25 parts of modified aluminium hydroxide powder, 15 parts of red phosphorus are put into high speed dispersor and are disperseed with the rotating speed of 3200r/min
40min obtains pre-dispersed material, and pre-dispersed material is placed in extruding pelletization in double screw extruder, obtains blending pellet；30g is weighed to be total to
Mixed pellet is placed in thick framed of 3mm, is placed in framed in moulding press, it is 180 DEG C to adjust moulding press temperature, to framed preheating
8min with the framed 5min of pressure hot pressing of 5.0MPa, then is cold-pressed to room temperature with the pressure of 10.0MPa and obtains fire-resistant cable material.
The CABLE MATERIALS that comparative example is produced with Shanghai City company is as a comparison case to fire-resistant cable material produced by the present invention
It is detected with the CABLE MATERIALS in comparative example, testing result is as shown in table 1：1st, test method
Tensile strength test is detected by the regulation of GB/T1040.3-2006.
Elongation at break test is detected by the regulation of GB/T1040.3-2006.
Oxygen index (OI) is detected by the regulation of GB/T2406-2009.
Charring rate：The charring rate of High Purity Nitrogen atmosphere at 800 DEG C of sample is used to be tried for characteristic magnitude with thermogravimetric analyzer
It tests.
Table 1
According to data in table 1, the excellent in mechanical performance of fire-resistant cable material produced by the present invention, charring rate is high, and anti-flammability is strong,
With wide prospect of the application.
Claims (7)
1. a kind of preparation method of fire-resistant cable material, it is characterised in that specifically preparation process is：
（1）400~500mL sodium hydroxide solutions and 80~90g aluminium hydroxides are mixed, are placed in stainless-steel pan, through resistance furnace
Heat temperature raising boiling, obtains cooking liquor, and cooking liquor is filtered with microporous barrier, solid residue is removed, obtains sodium aluminate solution；
（2）Aluminum sulfate solution and above-mentioned sodium aluminate solution are added in beaker, than mixing to beaker heating water bath liter as isometric
Temperature, after stirring, insulation reaction obtains reaction product, and reaction product is placed in centrifugal treating in supercentrifuge, is separated in removal
Layer liquid, obtains lower sediment thing, precipitate washed with water to cleaning solution is in neutrality, obtain fine aluminium hydroxide；
（3）Fine aluminium hydroxide is placed in baking oven, heat temperature raising, after dry, obtains aluminium hydroxide fine powder, by 120~
140g aluminium hydroxides fine powder is put into colloid mill with 10~12g titanate esters and handles, and obtains activation aluminium-hydroxide powder；
（4）Activation aluminium-hydroxide powder is placed in low speed kneader, configures the ethanol solution of 150~180mL aluminum stearates, spray
It drenches on activation aluminium-hydroxide powder, is stirred, after mixing, heat temperature raising continues to be stirred, and obtains modified hydrogen-oxygen
Change aluminium powder；
（5）It counts in parts by weight, by 70~80 parts of EVA resins, 20~30 parts of linear low density polyethylene, 20~25 parts of modified hydrogen
Alumina powder, 10~15 parts of red phosphorus, which are put into high speed dispersor, to be disperseed to obtain pre-dispersed material, and pre-dispersed material is placed in twin-screw
Extruding pelletization in extruder obtains blending pellet；
（6）Weigh 23~30g blending pellet, be placed in it is framed in, be placed in framed in moulding press, to framed preheating, hot pressing is framed,
It is cold-pressed again with the pressure of 10.0MPa to room temperature and obtains fire-resistant cable material.
2. a kind of preparation method of fire-resistant cable material according to claim 1, it is characterised in that：Step（1）The hydrogen
The mass fraction of sodium hydroxide solution is 40%, and temperature is 200~230 DEG C after resistance furnace heat temperature raising, digestion time for 20~
25min。
3. a kind of preparation method of fire-resistant cable material according to claim 1, it is characterised in that：Step（2）The sulphur
The mass fraction of sour aluminum solutions is 30%, is 70~75 DEG C to temperature after beaker water-bath heat temperature raising, mixing time for 10~
15min, insulation reaction time are 30~35min, and supercentrifuge rotating speed is 4500~4800r/min, and the centrifugal treating time is
15~20min.
4. a kind of preparation method of fire-resistant cable material according to claim 1, it is characterised in that：Step（3）The baking
Temperature is 80~85 DEG C after case heat temperature raising, and drying time is 4~5h, and glue mill gap is 0.1~0.3mm during milling treatment of colloid,
The milling treatment of colloid time is 50~55min.
5. a kind of preparation method of fire-resistant cable material according to claim 1, it is characterised in that：Step（4）Described is hard
The mass fraction of the ethanol solution of resin acid aluminium is 30%, and low speed kneader rotating speed is 200~230r/min, is stirred the time and is
20~30min, temperature is 75~90 DEG C after heat temperature raising, and speed of agitator is 500~550r/min, be stirred the time for 2~
3h。
6. a kind of preparation method of fire-resistant cable material according to claim 1, it is characterised in that：Step（5）The height
Fast dispersing speed is 3000~3200r/min, and jitter time is 30~40min.
7. a kind of preparation method of fire-resistant cable material according to claim 1, it is characterised in that：Step（6）The mould
Frame thickness is 1~3mm, and it is 160~180 DEG C that moulding press temperature is adjusted during preheating, and preheating time is 6~8min, and hot pressing is framed
Pressure is 4.5~5.0MPa, and hot pressing time is 4~5min.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054164A (en) * | 2018-07-23 | 2018-12-21 | 安徽成力特科技有限公司 | A kind of low-smoke non-halogen flame-retardant cross-linked polyolefin sheath material and preparation method thereof |
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