CN109651849A - A kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide - Google Patents
A kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide Download PDFInfo
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- CN109651849A CN109651849A CN201811564526.7A CN201811564526A CN109651849A CN 109651849 A CN109651849 A CN 109651849A CN 201811564526 A CN201811564526 A CN 201811564526A CN 109651849 A CN109651849 A CN 109651849A
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- wollastonite
- flame
- aluminium
- retardant cable
- aluminium hydroxide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/407—Aluminium oxides or hydroxides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
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- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
A kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide, high-quality wollastonite raw ore is crushed, is ground to 400 mesh by the method, then ground wollastonite and water are made into certain density slurries, a certain amount of dispersing agent is added, the aluminium chloride and ammonium hydroxide centainly matched is added after reaching certain temperature, add a certain amount of composite coupler, by constant temperature high-speed stirred wet grinding, obtain the composite mortar of 6000 mesh, again through drying, collection, the wollastonite in powder of rear final obtained aluminium hydrate nano particles coat is broken up in depolymerization.Product of the present invention reaches the anti-flammability in low-smoke non-halogen flame-retardant cable, and it is filled in and shows to have excellent comprehensive mechanical property and electrical insulation capability in low-smoke non-halogen flame-retardant cable.Product of the present invention is suitable for power cable surface and is coated with.
Description
Technical field
The present invention relates to a kind of flame-retardant cable preparation methods of wollastonite surface cladded aluminium hydroxide, belong to fine chemistry industry skill
Art field.
Background technique
Aluminium hydroxide is a kind of inorganic fire retardants for integrating fire-retardant, pressing down cigarette, is antidrip, filling four big functions, decomposes temperature
Degree is 200-300 DEG C, and fire retardant mechanism releases the water of combination when being burning, while absorbing a large amount of heat, while raw after hydrolysis
At aluminium oxide be good refractory material, reduce the combustibility of basis material.Aluminium hydroxide is as a kind of nuisanceless fire-retardant
Agent is widely used in low-smoke non-halogen flame-retardant cable field.
Wollastonite is the metasilicate mineral of chain, belongs to anorthic system, aggregate is in threadiness and needle-shaped, ordinary circumstance
Under it is acidproof, alkaline-resisting, resistant to chemical etching, oil absorption is low, conductivity is low, good insulating.Due to its aspect fibers with higher
Shape and acicular texture can do reinforcing agent for surface side filler, be widely used in plastics, rubber, coating, ceramics, refractory material
Equal fields, can significantly improve tensile strength, flexural strength, the impact resistance of basis material, enhance hardness, improve matrix material
Electric property, thermal stability and the dimensional stability of material.Wollastonite is a kind of inorganic silicon-series five-retardant again simultaneously, has resistance to height
Temperature, fire resisting and fire-retardant effect, fire retardant mechanism are that solid protective layer is formed in composite material combustion process, can be fine
Isolation protective layer in the substance heat and the outside Es-region propagations of imflammable gas that generate, so that material is reached self-extinguishment, to reach real
Existing flame retardant effect.As fire retardant, wollastonite is while assigning the good flame retardant property of material and fire resisting resistant to high temperatures, to life
State is friendly, nontoxic, tasteless, is a kind of very with development potentiality " green " fire retardant.
Summary of the invention
The object of the present invention is to be led for during aluminium hydroxide flame-retardant to promoting polymer surfaces poor at the effect of charcoal
The problem for causing low smoke and zero halogen cable anti-flammability deficiency, proposes a kind of preparation of flame-retardant cable wollastonite surface cladded aluminium hydroxide
Method.
The technical solution that the present invention realizes is as follows, a kind of preparation side of flame-retardant cable wollastonite surface cladded aluminium hydroxide
High-quality wollastonite raw ore is crushed, is ground to 400 mesh by method, the method, and ground wollastonite and water are then made into one
A certain amount of dispersing agent is added in the slurries for determining concentration, reaches and the aluminium chloride and ammonium hydroxide centainly matched is added after certain temperature, then plus
Enter a certain amount of composite coupler, by constant temperature high-speed stirred wet grinding, obtain the composite mortar of 6000 mesh, then through drying,
It collects, the wollastonite in powder of rear final obtained aluminium hydrate nano particles coat is broken up in depolymerization.
The method is modified powder surface using aluminium titanium composite coupler, and coats one layer on wollastonite in powder surface
Aluminium hydroxide efficiently uses the fire retardation of aluminium hydroxide, forms solid unformed silicon in combustion using wollastonite
Protective layer makes up aluminium hydroxide into the disadvantage of charcoal effect difference, realizes the low of wollastonite surface cladded aluminium hydroxide composite material
Cigarette, Halogen and flame retarding function.
A kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide, the specific steps are as follows:
(1) raw ore cleaning primary fragmentation obtains diameter by high-quality wollastonite raw ore after coarse crushing, cleaning, primary fragmentation
For the raw ore of 5-10cm；
(2) second-time breakage will clean broken wollastonite raw ore, and be put into feed bin and carry out second-time breakage, second-time breakage
The material that diameter is 5-10mm is obtained afterwards；
(3) dry grinding, the material after second-time breakage is delivered to 198 type ring rollers mill through belt and carries out dry grinding, in ring
Roller grinds entrance and grinding aid is added, and 400 mesh wollastonite powders are obtained after dry grinding；
(4) slurry is prepared, the wollastonite powder of 400 obtained mesh is configured to the slurry that solid content is 70-75%；Together
When, dispersing agent is added during slurry configuration, keeps its fully dispersed uniformly；
(5) high-speed constant-temperature stirs wet grinding, and aluminium chloride and ammonium hydroxide will be added in the slurry of obtained solid content 70-75%
It grinds, stirs 2 hours in vertical mixer；Precipitation reaction is carried out in process of lapping, while composite coupler is added；It is vertical to stir
Mixing and microspheroidal hole zirconium oxide is added in machine is abrasive media, controls slurry temperature during agitation grinding, is allowed to full and uniform mixed
It closes, the slurry of 6000 mesh is finally made；
(6) slurry after being stirred to react is pumped into flash dryer by expansion drying, is carried out using clean hot-air
Expansion drying；
(7) cloth bag is collected, and the powder after drying is collected through cloth bag；
(8) depolymerization is broken up, and the powder after collection is entered Depolymerizing thrasher through spiral reamer feeder, is destroyed due to particle
Reunion, keep the partial size of primary partical；
(9) finished product packing packs the powder after high-speed stirred through automatic packaging machine.
The dispersing agent is the perfluoro octyl sulfonic acid sodium dispersing agent of powder quality 2 ‰.
The composite coupler is the aluminium titanium composite coupler of powder quality 6 ‰ -8 ‰, molecular formula are as follows:
The mass ratio of the aluminium chloride and ammonium hydroxide and wollastonite are as follows: aluminium chloride and ammonium hydroxide: wollastonite=2-3:1；Aluminium chloride
With ammonium hydroxide mass ratio are as follows: aluminium chloride: ammonium hydroxide=1:3-4.
The vertical mixer revolving speed is 2500r/min.
The Mohs' hardness of the abrasive media is 8, diameter 3mm.
The temperature that slurry is controlled during the agitation grinding is 70-80 DEG C.
The invention has the advantages that products of the present invention has fineness, surface active degree height, fire-retardant reinforcing property
Good feature.
The hardness of wollastonite is relatively high, is generally difficult to be ground to 3000 mesh or more, product of the present invention is super by wet grinding
Powder granule can be ground to 6000 mesh by fine powder body processing technology, and for average grain diameter at 0.8-0.9 μm, BET specific surface area is big
In equal to 10m2/g.The technique that depolymerization is broken up is used in product processes simultaneously, powder is effectively dispersed, is kept
The partial size of primary partical.
Product of the present invention surface active degree is high, good with the compatibility of substrate；Product of the present invention is after depolymerization is broken up, using aluminium
The characteristics of titanium composite coupler is modified powder surface, has both Aluminate and titanate coupling agent, the activation grade of product is big
In 97%.The surface active degree of powder body material is higher, and oil absorption is also lower, and dispersibility and mobility are also better, with substrate tree
The compatibility of rouge is also stronger.
One layer of aluminium hydroxide is coated on wollastonite in powder surface in the production process of product of the present invention, effectively utilizes hydrogen
The fire retardation of aluminium oxide simultaneously, also utilizes wollastonite promotion and burns into charcoal raising flame retardant effect, and the fibre that wollastonite is special
Peacekeeping acicular texture has reinforcement and other effects to cable.Product of the present invention reaches the anti-flammability in low-smoke non-halogen flame-retardant cable, and
And it is filled in and shows to have excellent comprehensive mechanical property and electrical insulation capability in low-smoke non-halogen flame-retardant cable.
Product of the present invention is suitable for power cable surface and is coated with.
Detailed description of the invention
Fig. 1 is present invention process flow diagram；
Fig. 2 is the corresponding product scanning electron microscope (SEM) photograph of embodiment 1 (product amplifies 5000 times)；
Fig. 3 is the corresponding product scanning electron microscope (SEM) photograph of embodiment 2 (product amplifies 1000 times)；
Fig. 4 is the corresponding product scanning electron microscope (SEM) photograph of embodiment 3 (product amplifies 5000 times).
Specific embodiment
A specific embodiment of the invention is as shown in Figure 1.
Embodiment 1:
It prepares slurry: the mass ratio of aluminium chloride and ammonium hydroxide and wollastonite being added in the slurry that obtained 70-75% is contained admittedly
Are as follows: aluminium chloride and ammonium hydroxide: wollastonite=2:1, aluminium chloride and ammonium hydroxide mass ratio are as follows: aluminium chloride: ammonium hydroxide=1:3, in process of lapping
Middle carry out precipitation reaction, while composite coupler is added；Vertical mixer revolving speed is 2500r/min, is stirred 2 hours, vertical to stir
Mixing and the microspheroidal hole zirconium oxide of speciality is added in mill is abrasive media, and the Mohs' hardness of abrasive media is 8, diameter 3mm.Stirring
Slurry temperature is controlled in process of lapping between 70-80 DEG C, is allowed to full and uniform mixing, powder is changed using coupling agent
Property, modifying agent is the aluminium titanium composite coupler of powder quality 6 ‰, and the slurry of 6000 mesh is finally made, and then passes through expansion drying
It collects, depolymerization is broken up, and is sieved, and it is ultra-fine to obtain a kind of low-smoke non-halogen flame-retardant cable wollastonite surface cladded aluminium hydroxide for packaging
Powder.
The corresponding lot sample testing result of embodiment 1
The corresponding product scanning electron microscope (SEM) photograph of embodiment 1 is as shown in Figure 2.
Embodiment 2:
It prepares slurry: the mass ratio of aluminium chloride and ammonium hydroxide and wollastonite being added in the slurry that obtained 70-75% is contained admittedly
Are as follows: aluminium chloride and ammonium hydroxide: wollastonite=3:1, aluminium chloride and ammonium hydroxide mass ratio are as follows: aluminium chloride: ammonium hydroxide=1:4, in process of lapping
Middle carry out precipitation reaction, while composite coupler is added；Vertical mixer revolving speed is 2500r/min, is stirred 2 hours, vertical to stir
Mixing and the microspheroidal hole zirconium oxide of speciality is added in mill is abrasive media, and the Mohs' hardness of abrasive media is 8, diameter 3mm.Stirring
Slurry temperature is controlled in process of lapping between 70-80 DEG C, is allowed to full and uniform mixing, powder is changed using coupling agent
Property, modifying agent is the aluminium titanium composite coupler of powder quality 7 ‰, and the slurry of 6000 mesh is finally made, and then passes through expansion drying
It collects, depolymerization is broken up, and is sieved, and it is ultra-fine to obtain a kind of low-smoke non-halogen flame-retardant cable wollastonite surface cladded aluminium hydroxide for packaging
Powder.
The corresponding lot sample testing result of embodiment 2
The corresponding product scanning electron microscope (SEM) photograph of embodiment 2 is as shown in Figure 3.
Embodiment 3:
It prepares slurry: the mass ratio of aluminium chloride and ammonium hydroxide and wollastonite being added in the slurry that obtained 70-75% is contained admittedly
Are as follows: aluminium chloride and ammonium hydroxide: wollastonite=2:1, aluminium chloride and ammonium hydroxide mass ratio are as follows: aluminium chloride: ammonium hydroxide=1:4, in process of lapping
Middle carry out precipitation reaction, while composite coupler is added；Vertical mixer revolving speed is 2500r/min, is stirred 2 hours, vertical to stir
Mixing and the microspheroidal hole zirconium oxide of speciality is added in mill is abrasive media, and the Mohs' hardness of abrasive media is 8, diameter 3mm.Stirring
Slurry temperature is controlled in process of lapping between 70-80 DEG C, is allowed to full and uniform mixing, powder is changed using coupling agent
Property, modifying agent is the aluminium titanium composite coupler of powder quality 8 ‰, and the slurry of 6000 mesh is finally made, and then passes through expansion drying
It collects, depolymerization is broken up, and is sieved, and it is ultra-fine to obtain a kind of low-smoke non-halogen flame-retardant cable wollastonite surface cladded aluminium hydroxide for packaging
Powder.
3 corresponding lot sample testing result in implementation
The corresponding product scanning electron microscope (SEM) photograph of embodiment 3 is as shown in Figure 4.
Claims (8)
1. a kind of flame-retardant cable preparation method of wollastonite surface cladded aluminium hydroxide, including by high-quality wollastonite raw ore through broken
It is broken, grinding, be made into certain density slurries, which is characterized in that the method using aluminium titanium composite coupler to powder surface into
Row is modified, and coats one layer of aluminium hydroxide on wollastonite in powder surface, is efficiently used the fire retardation of aluminium hydroxide, is utilized wollastonite
It forms solid unformed silicon protective layer in combustion to make up aluminium hydroxide into the disadvantage of charcoal effect difference, realizes wollastonite
Low cigarette, Halogen and the flame retarding function of surface cladded aluminium hydroxide composite material.
2. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 1, special
Sign is that specific step is as follows for the method:
(1) raw ore cleans primary fragmentation, and by high-quality wollastonite raw ore after coarse crushing, cleaning, primary fragmentation, obtaining diameter is 5-
The raw ore of 10cm；
(2) second-time breakage will clean broken wollastonite raw ore, and be put into feed bin and carry out second-time breakage, after second-time breakage
The material for being 5-10mm to diameter；
(3) dry grinding, the material after second-time breakage are delivered to 198 type ring rollers mill through belt and carry out dry grinding, grind in ring roll
Grinding aid is added in entrance, and 400 mesh wollastonite powders are obtained after dry grinding；
(4) slurry is prepared, the wollastonite powder of 400 obtained mesh is configured to the slurry that solid content is 70-75%；Meanwhile
Dispersing agent is added during configuring in slurry, keeps its fully dispersed uniformly；
(5) high-speed constant-temperature stirs wet grinding, aluminium chloride and ammonium hydroxide will be added in the slurry of obtained solid content 70-75% vertical
It grinds, stirs 2 hours in formula blender；Precipitation reaction is carried out in process of lapping, while composite coupler is added；Vertical mixer
Middle addition microspheroidal hole zirconium oxide is abrasive media, controls slurry temperature during agitation grinding, is allowed to full and uniform mixing, most
The slurry of 6000 mesh is made afterwards；
(6) slurry after being stirred to react is pumped into flash dryer, is flashed using clean hot-air by expansion drying
It is dry；
(7) cloth bag is collected, and the powder after drying is collected through cloth bag；
(8) depolymerization is broken up, and the powder after collection is entered Depolymerizing thrasher through spiral reamer feeder, destroys the group due to particle
It is poly-, keep the partial size of primary partical；
(9) finished product packing packs the powder after high-speed stirred through automatic packaging machine.
3. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 2, special
Sign is that the dispersing agent is the perfluoro octyl sulfonic acid sodium dispersing agent of powder quality 2 ‰.
4. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 2, special
Sign is that the composite coupler is the aluminium titanium composite coupler of powder quality 6 ‰ -8 ‰, molecular formula are as follows:
5. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 2, special
Sign is, the mass ratio of the aluminium chloride and ammonium hydroxide and wollastonite are as follows: aluminium chloride and ammonium hydroxide: wollastonite=2-3:1；Aluminium chloride with
Ammonium hydroxide mass ratio are as follows: aluminium chloride: ammonium hydroxide=1:3-4.
6. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 2, special
Sign is that the vertical mixer revolving speed is 2500r/min.
7. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 2, special
Sign is that the Mohs' hardness of the abrasive media is 8, diameter 3mm.
8. a kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide according to claim 2, special
Sign is that the temperature that slurry is controlled during the agitation grinding is 70-80 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811564526.7A CN109651849A (en) | 2018-12-20 | 2018-12-20 | A kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811564526.7A CN109651849A (en) | 2018-12-20 | 2018-12-20 | A kind of preparation method of flame-retardant cable wollastonite surface cladded aluminium hydroxide |
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Cited By (3)
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| CN111892831A (en) * | 2020-08-07 | 2020-11-06 | 江西广源化工有限责任公司 | Composite powder for electronic adhesive and preparation method and application thereof |
| CN114316368A (en) * | 2021-12-30 | 2022-04-12 | 江西广源化工有限责任公司 | Preparation method of aluminum hydroxide/magnesium hydroxide composite inorganic flame retardant |
| CN116444858A (en) * | 2023-03-29 | 2023-07-18 | 江西广源化工有限责任公司 | Wollastonite/magnesium hydroxide composite inorganic flame retardant and preparation method thereof |
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