CN107880593A - A kind of preparation method for the filler for lifting PVC wood plastic composite material quality - Google Patents
A kind of preparation method for the filler for lifting PVC wood plastic composite material quality Download PDFInfo
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- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- 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
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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- C09C3/10—Treatment with macromolecular organic compounds
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a kind of preparation method for the filler for lifting PVC wood plastic composite material quality, comprise the following steps：（1）Decontamination processing,（2）Surface-active-treatment,（3）Calcination processing,（4）Immersion treatment,（5）Secondary immersion treatment,（6）Drying process.Filler made from preparation method of the present invention can effectively improve the overall quality of PVC wood plastic composite material, improve the characteristic such as its heatproof, corrosion resistant, wear-resisting, impact resistance, the service life of PVC wood plastic composite material has been obviously prolonged, there is good economic benefit and promotional value.
Description
Technical field
The invention belongs to door-window section bar processing and manufacturing technology, and in particular to one kind lifting PVC wood plastic composite material product
The preparation method of the filler of matter.
Background technology
Wood plastic composite is a kind of emerging composite, is using wood-fibred or string as primary raw material, fill,
Enhancing, through the modified thermoplastic material made of different processing modes such as compound, melting extrusion of hot pressing, be mainly used in building materials, furniture,
The industries such as logistics packaging.Wood plastic composite has merged the two-fold advantage of " wood " and " modeling ", can overcome because strength of wood is low, becomes
Limitation is used caused by the different in nature big and low grade of organic material modulus of elasticity, and can makes full use of discarded timber and plastics, section
Energy emission reduction, reduces environmental pollution, lifts the surcharge of material, be a kind of new material of great development prospect.Especially with
The increase increasingly reduced with demand of natural resources, the application field of wood plastic composite constantly expands, and technical merit is therewith
Upgrading, market prospects are very wide.Although wood plastic composite has been widely used, with the development of the society, continuous
Improve its performance, such as the performance such as intensity, toughness, heat resistance, heat insulating ability, sound-proofing, antistatic behaviour, ultra-violet resistance.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of filler for lifting PVC wood plastic composite material quality
Preparation method, manufactured filler can lift impact strength, temperature-resistance characteristic of PVC wood plastic composite material etc. well.
The present invention is achieved by the following technical solutions：
A kind of preparation method for the filler for lifting PVC wood plastic composite material quality, comprises the following steps：
（1）Decontamination processing：
Zeolite powder is put into clear water to rinse and once taken out afterwards, is then put into immersion treatment in liquor potassic permanganate again
25 ~ 30min, finally take out to use again and standby use is rinsed in clear water；
（2）Surface-active-treatment：
By step（1）Zeolite powder after processing first puts into 5 ~ 8min of immersion treatment in citric acid solution, is thrown again after taking-up
Enter into salpeter solution 8 ~ 10min of immersion treatment, 10 ~ 15min of immersion treatment in sodium hydroxide solution put into after then taking out,
Finally take out with standby after deionized water rinsing one time；
（3）Calcination processing：
By step（2）Zeolite powder after processing, which is put into heating kiln, carries out calcination processing, is taken out after 2 ~ 3h and naturally cools to room
It is standby after temperature；
（4）Immersion treatment：
By step（3）Zeolite powder after processing is put into reactor, and an immersion treatment liquid is added into reactor, constantly super
Filtered out after 40 ~ 45min of sonication standby；A described immersion treatment liquid by following parts by weight material composition：10 ~ 15 parts are received
Rice carbon pipe, 4 ~ 6 parts of sodium alginates, 8 ~ 12 parts of silane couplers, 3 ~ 5 parts of calgons, 10 ~ 15 parts of ethylene glycol, 2 ~ 4 parts of polyoxies
Ethene polyoxy propyl alcohol amidogen ether, 260 ~ 280 parts of water；
（5）Secondary immersion treatment：
By step（4）The zeolite powder filtered out after processing is put into reactor, secondary immersion treatment liquid is added into reactor, no
Filtered out after 1 ~ 1.5h of disconnected supersound process standby；Described secondary immersion treatment liquid by following parts by weight material composition：15 ~ 20 parts
White mica powder, 25 ~ 30 parts of aluminate coupling agents, 6 ~ 10 parts of bacteria celluloses, 3 ~ 5 parts of calcium chloride, 5 ~ 8 parts of acrylic acid, 4 ~ 6 part ten
Six sodium alkyl benzene sulfonates, 300 ~ 350 parts of water；The bacteria cellulose of addition has good crosslinking feature, effectively improves white clouds
Female powder wraps the crystallized ability on layer in CNT, and the calcium ion in the calcium chloride of addition can promote the crosslinking of bacteria cellulose
Solidification, improve the use quality of bacteria cellulose；
（6）Drying process：
By step（5）The zeolite powder filtered out after processing, which is put into freeze drier, is dried processing, after the completion of take out.
Further, step（1）Described in zeolite powder particle diameter be 1 ~ 40 μm.
Further, step（1）Described in liquor potassic permanganate in potassium permanganate mass fraction be 3 ~ 5%.
Further, step（2）Described in citric acid solution in citric acid mass fraction be 5 ~ 7%, described nitric acid
The mass fraction of nitric acid is 8 ~ 10% in solution, and the mass fraction of sodium hydroxide is 10 ~ 12% in described sodium hydroxide solution.
Further, step（3）Described in calcination processing when keep heating kiln in temperature be 600 ~ 650 DEG C.
Further, step（4）Described in the frequency of supersound process be 55 ~ 60kHz, during which heating is kept in reactor
Temperature be 70 ~ 75 DEG C.
Further, step（5）Described in the frequency of supersound process be 80 ~ 85kHz, during which heating is kept in reactor
Temperature be 65 ~ 70 DEG C, and the pressure in reactor is increased into 0.5 ~ 0.6MPa.
Further, step（5）Described in the particle diameter of white mica powder be 10 ~ 50nm.
It is relatively conventional to improve the quality of wood plastic composite using inorganic filler, but existing most fillers are because of composition
Structure is single, causes the problems such as bad to the quality-improving of wood plastic composite, filling effect is unstable.The present invention has arranged in pairs or groups more
Kind of process has been made that a structure is special, filler composition of good performance, and effectively improving the entirety of wood plastic composite makes
Use quality.Wherein have selected zeolite powder is base matter, has first carried out decontamination processing to it, eliminates the impurity component on surface,
Laid a good foundation for follow-up processing, then carried out surface-active-treatment, further eliminate impurity component, improve enhancing again
Its surface-active, is easy to the reaction of subsequent step, has then carried out calcination processing, effectively improve the specific surface area of zeolite powder
And characterization of adsorption, an immersion treatment is then carried out, the sodium alginate, silane coupler, six inclined in an immersion treatment liquid
Under the collective effect of the compositions such as sodium phosphate, CNT is effectively interspersed to graft on the micropore and surface of zeolite powder, forms
The crosslinking of one CNT wraps layer, has carried out secondary immersion treatment again afterwards, and Aluminate is coupled in secondary immersion treatment liquid
Under the collective effect of the compositions such as agent, bacteria cellulose, calcium chloride, acrylic acid, white mica powder is scattered to be fixed on CNT and wraps
On layer, form a white mica powder and wrap layer, finally carried out vacuum freeze drying processing, while moisture removal is removed, utilize
Low temperature environment improves the strength characteristics for wrapping layer, and then improves filling using effect；This filler is used for wood plastic composite
Manufacture in, when wood plastic composite is impacted, the white mica powder of filler wraps layer outer layer and CNT is wrapped in layer
It is deformed corresponding to interbed meeting, slides, ftracture, and then absorb substantial amounts of impact energy, is played a part of stress concentration, subtract
The weak transmission of impact energy, improves the impact property of wood plastic composite, and this filler each component be respectively provided with it is very strong resistance to
Temperature, corrosion resistant characteristic, its three-decker improve the isolation effect to temperature, and when temperature is higher, the CNT in intermediate layer wraps
Layer and can absorbs to heat well, and reducing heat diffusion influences the degree of wood plastic composite substrate performance, enhancing
Its heat-resisting feature.
The present invention has advantages below compared with prior art：
Filler made from preparation method of the present invention can effectively improve the overall quality of PVC wood plastic composite material, and it is resistance to improve its
The characteristic such as temperature, corrosion resistant, wear-resisting, impact resistance, hence it is evident that extend the service life of PVC wood plastic composite material, have economic well
Benefit and promotional value.
Embodiment
Embodiment 1
A kind of preparation method for the filler for lifting PVC wood plastic composite material quality, comprises the following steps：
（1）Decontamination processing：
Zeolite powder is put into clear water to rinse and once taken out afterwards, is then put into immersion treatment in liquor potassic permanganate again
25min, finally take out to use again and standby use is rinsed in clear water；
（2）Surface-active-treatment：
By step（1）Zeolite powder after processing first puts into immersion treatment 5min in citric acid solution, is put into again after taking-up
The immersion treatment 8min into salpeter solution, immersion treatment 10min in sodium hydroxide solution is put into after then taking out, is finally taken out
With standby after deionized water rinsing one time；
（3）Calcination processing：
By step（2）Zeolite powder after processing, which is put into heating kiln, carries out calcination processing, is taken out after 2h and naturally cools to room temperature
It is standby afterwards；
（4）Immersion treatment：
By step（3）Zeolite powder after processing is put into reactor, and an immersion treatment liquid is added into reactor, constantly super
Filtered out after sonication 40min standby；A described immersion treatment liquid by following parts by weight material composition：10 parts of nano-sized carbons
Pipe, 4 parts of sodium alginates, 8 parts of silane couplers, 3 parts of calgons, 10 parts of ethylene glycol, 2 parts of polyoxyethylene polyoxy Propanolamines
Ether, 260 parts of water；
（5）Secondary immersion treatment：
By step（4）The zeolite powder filtered out after processing is put into reactor, secondary immersion treatment liquid is added into reactor, no
Filtered out after disconnected supersound process 1h standby；Described secondary immersion treatment liquid by following parts by weight material composition：15 parts of muscovites
Powder, 25 parts of aluminate coupling agents, 6 parts of bacteria celluloses, 3 parts of calcium chloride, 5 parts of acrylic acid, 4 parts of cetyl benzenesulfonic acid sodiums, 300
Part water；
（6）Drying process：
By step（5）The zeolite powder filtered out after processing, which is put into freeze drier, is dried processing, after the completion of take out.
Further, step（1）Described in zeolite powder particle diameter be 1 ~ 40 μm.
Further, step（1）Described in liquor potassic permanganate in potassium permanganate mass fraction be 3%.
Further, step（2）Described in citric acid solution in citric acid mass fraction be 5%, described nitric acid is molten
The mass fraction of nitric acid is 8% in liquid, and the mass fraction of sodium hydroxide is 10% in described sodium hydroxide solution.
Further, step（3）Described in calcination processing when keep heating kiln in temperature be 600 DEG C.
Further, step（4）Described in the frequency of supersound process be 55kHz, during which heating is kept in reactor
Temperature is 70 DEG C.
Further, step（5）Described in the frequency of supersound process be 80kHz, during which heating is kept in reactor
Temperature is 65 DEG C, and the pressure in reactor is increased into 0.5MPa.
Further, step（5）Described in the particle diameter of white mica powder be 10 ~ 50nm.
Embodiment 2
A kind of preparation method for the filler for lifting PVC wood plastic composite material quality, comprises the following steps：
（1）Decontamination processing：
Zeolite powder is put into clear water to rinse and once taken out afterwards, is then put into immersion treatment in liquor potassic permanganate again
28min, finally take out to use again and standby use is rinsed in clear water；
（2）Surface-active-treatment：
By step（1）Zeolite powder after processing first puts into immersion treatment 7min in citric acid solution, is put into again after taking-up
The immersion treatment 9min into salpeter solution, immersion treatment 13min in sodium hydroxide solution is put into after then taking out, is finally taken out
With standby after deionized water rinsing one time；
（3）Calcination processing：
By step（2）Zeolite powder after processing, which is put into heating kiln, carries out calcination processing, is taken out after 2.5h and naturally cools to room
It is standby after temperature；
（4）Immersion treatment：
By step（3）Zeolite powder after processing is put into reactor, and an immersion treatment liquid is added into reactor, constantly super
Filtered out after sonication 43min standby；A described immersion treatment liquid by following parts by weight material composition：13 parts of nano-sized carbons
Pipe, 5 parts of sodium alginates, 10 parts of silane couplers, 4 parts of calgons, 13 parts of ethylene glycol, 3 parts of polyoxyethylene polyoxy Propanolamines
Ether, 270 parts of water；
（5）Secondary immersion treatment：
By step（4）The zeolite powder filtered out after processing is put into reactor, secondary immersion treatment liquid is added into reactor, no
Filtered out after disconnected supersound process 1.2h standby；Described secondary immersion treatment liquid by following parts by weight material composition：18 parts of white clouds
Female powder, 27 parts of aluminate coupling agents, 8 parts of bacteria celluloses, 4 parts of calcium chloride, 7 parts of acrylic acid, 5 parts of cetyl benzenesulfonic acid sodiums,
320 parts of water；
（6）Drying process：
By step（5）The zeolite powder filtered out after processing, which is put into freeze drier, is dried processing, after the completion of take out.
Further, step（1）Described in zeolite powder particle diameter be 1 ~ 40 μm.
Further, step（1）Described in liquor potassic permanganate in potassium permanganate mass fraction be 4%.
Further, step（2）Described in citric acid solution in citric acid mass fraction be 6%, described nitric acid is molten
The mass fraction of nitric acid is 9% in liquid, and the mass fraction of sodium hydroxide is 11% in described sodium hydroxide solution.
Further, step（3）Described in calcination processing when keep heating kiln in temperature be 630 DEG C.
Further, step（4）Described in the frequency of supersound process be 58kHz, during which heating is kept in reactor
Temperature is 73 DEG C.
Further, step（5）Described in the frequency of supersound process be 82kHz, during which heating is kept in reactor
Temperature is 68 DEG C, and the pressure in reactor is increased into 0.55MPa.
Further, step（5）Described in the particle diameter of white mica powder be 10 ~ 50nm.
Embodiment 3
A kind of preparation method for the filler for lifting PVC wood plastic composite material quality, comprises the following steps：
（1）Decontamination processing：
Zeolite powder is put into clear water to rinse and once taken out afterwards, is then put into immersion treatment in liquor potassic permanganate again
30min, finally take out to use again and standby use is rinsed in clear water；
（2）Surface-active-treatment：
By step（1）Zeolite powder after processing first puts into immersion treatment 8min in citric acid solution, is put into again after taking-up
The immersion treatment 10min into salpeter solution, immersion treatment 15min in sodium hydroxide solution is put into after then taking out, is finally taken
Go out with standby after deionized water rinsing one time；
（3）Calcination processing：
By step（2）Zeolite powder after processing, which is put into heating kiln, carries out calcination processing, is taken out after 3h and naturally cools to room temperature
It is standby afterwards；
（4）Immersion treatment：
By step（3）Zeolite powder after processing is put into reactor, and an immersion treatment liquid is added into reactor, constantly super
Filtered out after sonication 45min standby；A described immersion treatment liquid by following parts by weight material composition：15 parts of nano-sized carbons
Pipe, 6 parts of sodium alginates, 12 parts of silane couplers, 5 parts of calgons, 15 parts of ethylene glycol, 4 parts of polyoxyethylene polyoxy Propanolamines
Ether, 280 parts of water；
（5）Secondary immersion treatment：
By step（4）The zeolite powder filtered out after processing is put into reactor, secondary immersion treatment liquid is added into reactor, no
Filtered out after disconnected supersound process 1.5h standby；Described secondary immersion treatment liquid by following parts by weight material composition：20 parts of white clouds
Female powder, 30 parts of aluminate coupling agents, 10 parts of bacteria celluloses, 5 parts of calcium chloride, 8 parts of acrylic acid, 6 parts of cetyl benzenesulfonic acid sodiums,
350 parts of water；
（6）Drying process：
By step（5）The zeolite powder filtered out after processing, which is put into freeze drier, is dried processing, after the completion of take out.
Further, step（1）Described in zeolite powder particle diameter be 1 ~ 40 μm.
Further, step（1）Described in liquor potassic permanganate in potassium permanganate mass fraction be 5%.
Further, step（2）Described in citric acid solution in citric acid mass fraction be 7%, described nitric acid is molten
The mass fraction of nitric acid is 10% in liquid, and the mass fraction of sodium hydroxide is 12% in described sodium hydroxide solution.
Further, step（3）Described in calcination processing when keep heating kiln in temperature be 650 DEG C.
Further, step（4）Described in the frequency of supersound process be 60kHz, during which heating is kept in reactor
Temperature is 75 DEG C.
Further, step（5）Described in the frequency of supersound process be 85kHz, during which heating is kept in reactor
Temperature is 70 DEG C, and the pressure in reactor is increased into 0.6MPa.
Further, step（5）Described in the particle diameter of white mica powder be 10 ~ 50nm.
Comparative example 1
This comparative example 1 compared with Example 2, saves step（4）Immersion treatment operation, method and step in addition are equal
It is identical.
Comparative example 2
This comparative example 2 compared with Example 2, saves step（5）Secondary immersion treatment operation, method and step in addition are equal
It is identical.
Control group
Existing commercially available zeolite powder filler.
In order to contrast effect of the present invention, to above-described embodiment 2, comparative example 1, comparative example 2, the corresponding system of control group
Filler be used in the preparation of PVC wood plastic composite material, addition percentage by weight during preparation is 10%, finally to each group
Obtained PVC wood plastic composite material carries out performance test, and specific correction data is as shown in table 1 below：
Table 1
| Impact strength（KJ/m2） | Heat distortion temperature（℃） | |
| Embodiment 2 | 7.60 | 112 |
| Comparative example 1 | 6.95 | 87 |
| Comparative example 2 | 6.74 | 96 |
| Control group | 6.31 | 78 |
Note：Impact strength described in upper table 1 is tested with reference to international standard ISO179-1, and environment temperature during test is 23
± 2 DEG C, the size of impact specimen is：Long 80mm, wide 10mm, thick 4mm；Described heat distortion temperature equally takes above-mentioned impact to try
Sample is tested.
Filler produced by the present invention can lift the comprehensive use of PVC wood plastic composite material well it can be seen from upper table 1
Quality, have good value for applications.
Claims (8)
1. a kind of preparation method for the filler for lifting PVC wood plastic composite material quality, it is characterised in that comprise the following steps：
（1）Decontamination processing：
Zeolite powder is put into clear water to rinse and once taken out afterwards, is then put into immersion treatment in liquor potassic permanganate again
25 ~ 30min, finally take out to use again and standby use is rinsed in clear water；
（2）Surface-active-treatment：
By step（1）Zeolite powder after processing first puts into 5 ~ 8min of immersion treatment in citric acid solution, is thrown again after taking-up
Enter into salpeter solution 8 ~ 10min of immersion treatment, 10 ~ 15min of immersion treatment in sodium hydroxide solution put into after then taking out,
Finally take out with standby after deionized water rinsing one time；
（3）Calcination processing：
By step（2）Zeolite powder after processing, which is put into heating kiln, carries out calcination processing, is taken out after 2 ~ 3h and naturally cools to room
It is standby after temperature；
（4）Immersion treatment：
By step（3）Zeolite powder after processing is put into reactor, and an immersion treatment liquid is added into reactor, constantly super
Filtered out after 40 ~ 45min of sonication standby；A described immersion treatment liquid by following parts by weight material composition：10 ~ 15 parts are received
Rice carbon pipe, 4 ~ 6 parts of sodium alginates, 8 ~ 12 parts of silane couplers, 3 ~ 5 parts of calgons, 10 ~ 15 parts of ethylene glycol, 2 ~ 4 parts of polyoxies
Ethene polyoxy propyl alcohol amidogen ether, 260 ~ 280 parts of water；
（5）Secondary immersion treatment：
By step（4）The zeolite powder filtered out after processing is put into reactor, secondary immersion treatment liquid is added into reactor, no
Filtered out after 1 ~ 1.5h of disconnected supersound process standby；Described secondary immersion treatment liquid by following parts by weight material composition：15 ~ 20 parts
White mica powder, 25 ~ 30 parts of aluminate coupling agents, 6 ~ 10 parts of bacteria celluloses, 3 ~ 5 parts of calcium chloride, 5 ~ 8 parts of acrylic acid, 4 ~ 6 part ten
Six sodium alkyl benzene sulfonates, 300 ~ 350 parts of water；
（6）Drying process：
By step（5）The zeolite powder filtered out after processing, which is put into freeze drier, is dried processing, after the completion of take out.
2. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（1）Described in zeolite powder particle diameter be 1 ~ 40 μm.
3. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（1）Described in liquor potassic permanganate in potassium permanganate mass fraction be 3 ~ 5%.
4. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（2）Described in citric acid solution in the mass fraction of citric acid be 5 ~ 7%, the matter of nitric acid in described salpeter solution
It is 8 ~ 10% to measure fraction, and the mass fraction of sodium hydroxide is 10 ~ 12% in described sodium hydroxide solution.
5. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（3）Described in calcination processing when keep heating kiln in temperature be 600 ~ 650 DEG C.
6. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（4）Described in the frequency of supersound process be 55 ~ 60kHz, it is 70 ~ 75 that during which heating, which keeps the temperature in reactor,
℃。
7. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（5）Described in the frequency of supersound process be 80 ~ 85kHz, it is 65 ~ 70 that during which heating, which keeps the temperature in reactor,
DEG C, and the pressure in reactor is increased into 0.5 ~ 0.6MPa.
8. a kind of preparation method of filler for lifting PVC wood plastic composite material quality according to claim 1, its feature exist
In step（5）Described in the particle diameter of white mica powder be 10 ~ 50nm.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106280208A (en) * | 2016-08-04 | 2017-01-04 | 浙江畅通科技有限公司 | A kind of lead-acid accumulator aging resistance moulds shell preparation method |
| CN106633193A (en) * | 2016-11-28 | 2017-05-10 | 宣城市聚源精细化工有限公司 | High-quality fire retardant |
| CN106800683A (en) * | 2017-02-27 | 2017-06-06 | 合肥中科富华新材料有限公司 | A kind of wear-resistant cable material and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106280208A (en) * | 2016-08-04 | 2017-01-04 | 浙江畅通科技有限公司 | A kind of lead-acid accumulator aging resistance moulds shell preparation method |
| CN106633193A (en) * | 2016-11-28 | 2017-05-10 | 宣城市聚源精细化工有限公司 | High-quality fire retardant |
| CN106800683A (en) * | 2017-02-27 | 2017-06-06 | 合肥中科富华新材料有限公司 | A kind of wear-resistant cable material and preparation method |
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