CN108559141A - Battery flame retardant plastic material shell and preparation method thereof - Google Patents
Battery flame retardant plastic material shell and preparation method thereof Download PDFInfo
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- CN108559141A CN108559141A CN201810447511.6A CN201810447511A CN108559141A CN 108559141 A CN108559141 A CN 108559141A CN 201810447511 A CN201810447511 A CN 201810447511A CN 108559141 A CN108559141 A CN 108559141A
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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
- C08L7/00—Compositions of natural rubber
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of battery flame retardant plastic material shell and preparation method thereof, the preparation method includes：Modified coating is mixed with montmorillonite, then dried, be placed in sulfuric acid solution and impregnated, filtered to obtain modified montmorillonoid；Modified montmorillonoid, natural rubber, polyethylene, alkyd resin, acrylic resin, organic silicon fibre retardant, filler, lubricant and plasticizer are mixed, mixture M is obtained；Mixture M is added twin-screw extrude, flame retardant plastics is obtained after extruded, molding；Solve the problems, such as that existing flame retardant plastics is difficult to ensure superior mechanical property and flame retardant property simultaneously.
Description
Technical field
The present invention relates to battery manufacturing fields, and in particular, to a kind of battery flame retardant plastic material shell and preparation method thereof.
Background technology
With the continuous development of science and technology, the development of new energy battery is getting faster, the product of new energy battery on the market
It is more and more, therefore develop new energy battery with regard to particularly significant.The battery of new energy is often one battery of multiple battery compositions
Group, temperature is higher after battery pack works long hours, it is desirable to battery-pack exterior casing have excellent mechanical performance, high temperature resistance and
Flame retardant property avoids battery case high temperature deformation, while reducing the risk of battery spontaneous combustion.
Invention content
The object of the present invention is to provide a kind of battery flame retardant plastic material shells and preparation method thereof, solve existing battery case
It is difficult to the problem of ensureing superior mechanical performance and flame retardant property simultaneously.
To achieve the goals above, the present invention provides a kind of preparation method of battery flame retardant plastic material shell, the preparation sides
Method includes：
(1) modified coating is mixed with montmorillonite, then dries, is placed in sulfuric acid solution and is impregnated, filtered to obtain
Modified montmorillonoid；Wherein, modified coating is mixed to get by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate；
(2) by modified montmorillonoid, natural rubber, polyethylene, alkyd resin, acrylic resin, organic silicon fibre retardant, filling
Agent, lubricant and plasticizer mixing, obtain mixture M；
(3) mixture M is added twin-screw extrude, battery flame retardant plastic material shell is obtained after extruded, molding；Wherein,
The condition of extrusion includes：The rotating speed of screw rod is 200-300 revs/min, and the temperature of feeding section is 200-210 DEG C, fusion plastification section
Temperature be 240-250 DEG C, the temperature for mixing homogenizing zone is 210-220 DEG C, and the temperature of melt conveying metering section is 180-200
℃。
The present invention also provides a kind of battery flame retardant plastic material shell, the battery flame retardant plastic material shell is by above-mentioned preparation method system
.
Through the above technical solutions, the present invention provides a kind of battery flame retardant plastic material shell and preparation method thereof, the preparation
Method includes：Modified coating is mixed with montmorillonite, then dried, be placed in sulfuric acid solution and impregnated, filtered to be changed
Property montmorillonite；Wherein, modified coating is mixed to get by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate；It will be modified
Montmorillonite, natural rubber, polyethylene, alkyd resin, acrylic resin, organic silicon fibre retardant, filler, lubricant and plasticizer
Mixing, obtains mixture M；Mixture M is added twin-screw extrude, battery flame retardant plastic material shell is obtained after extruded, molding；
Passing through the synergistic effect between each raw material so that battery case obtained is provided simultaneously with excellent mechanical performance and flame retardant property,
Meanwhile the method that is used to prepare the battery case is simple, raw material is easy to get.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of preparation method of battery flame retardant plastic material shell, the preparation method includes：
(1) modified coating is mixed with montmorillonite, then dries, is placed in sulfuric acid solution and is impregnated, filtered to obtain
Modified montmorillonoid；Wherein, modified coating is mixed to get by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate；
(2) by modified montmorillonoid, natural rubber, polyethylene, alkyd resin, acrylic resin, organic silicon fibre retardant, filling
Agent, lubricant and plasticizer mixing, obtain mixture M；
(3) mixture M is added twin-screw extrude, battery flame retardant plastic material shell is obtained after extruded, molding；Wherein,
The condition of extrusion includes：The rotating speed of screw rod is 200-300 revs/min, and the temperature of feeding section is 200-210 DEG C, fusion plastification section
Temperature be 240-250 DEG C, the temperature for mixing homogenizing zone is 210-220 DEG C, and the temperature of melt conveying metering section is 180-200
℃。
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, relative to the natural rubber of 100 parts by weight, the dosage of modified montmorillonoid is 2-8 parts by weight, and the dosage of polyethylene is
The dosage of 20-30 parts by weight, alkyd resin is 25-45 parts by weight, and the dosage of acrylic resin is 40-80 parts by weight, organosilicon
The dosage of fire retardant is 2-10 parts by weight, and the dosage of filler is 2-7 parts by weight, and the dosage of lubricant is 2-7 parts by weight, plasticising
The dosage of agent is 2-8 parts by weight.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, relative to the natural rubber of 100 parts by weight, the dosage of modified montmorillonoid is 4-6 parts by weight, and the dosage of polyethylene is
The dosage of 24-26 parts by weight, alkyd resin is 30-40 parts by weight, and the dosage of acrylic resin is 50-70 parts by weight, organosilicon
The dosage of fire retardant is 4-6 parts by weight, and the dosage of filler is 4-5 parts by weight, and the dosage of lubricant is 4-5 parts by weight, plasticising
The dosage of agent is 4-6 parts by weight.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, in step (1), dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate are 1 according to mass ratio:10:10-
20 ratio is mixed.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, the mass concentration of sulfuric acid solution is 40-60%.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, filler is one or more in calcium carbonate, clay, silicate and talcum powder.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, lubricant is one or more in stearic acid, stearate, polystyrene wax, paraffin and oleamide.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, plasticizer is selected from phthalate compound, terephthalic acid ester compound and trimellitic acid esters chemical combination
It is one or more in object.
In a kind of preferred embodiment of the present invention, in order to further increase mechanical property and the resistance of plastics obtained
Performance is fired, the weight average molecular weight of polyethylene is 5000-8000, and the weight average molecular weight of alkyd resin is 9000-12000, polyethylene
The weight average molecular weight of alcohol is 6000-8000.
The present invention also provides a kind of battery flame retardant plastic material shell, the battery flame retardant plastic material shell is by above-mentioned preparation method system
.
The present invention will be described in detail by way of examples below.In following embodiment, the weight average molecular weight of polyethylene
Weight average molecular weight for 5000-8000, alkyd resin is 9000-12000, and the weight average molecular weight of polyvinyl alcohol is 6000-8000；
The commercially available product that organic silicon fibre retardant is KR-2710 by the trade mark that Shanghai Guang Bin trade Co., Ltds provide.
Embodiment 1
Modified coating is mixed with montmorillonite, then dried, be placed in sulfuric acid solution (mass concentration 40%) and soaked
Bubble is filtered to obtain modified montmorillonoid；Wherein, modified coating is by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate
Be mixed to get (dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate according to mass ratio be 1:10:10 ratio is mixed
It closes)；By 4g modified montmorillonoids, 100g natural rubbers, 24g polyethylene, 30g alkyd resins, 50g acrylic resins, 4g organosilicons
Fire retardant, 4g calcium carbonate, 4g stearic acid and the mixing of 4g phthalate compounds, obtain mixture M；By mixture M plus
Enter in double screw extruder, extruded, molding (it is molded by the way of hot-forming, and the temperature of hot pressing is 40 DEG C, hot pressing
Pressure is 30MPa) after obtain battery flame retardant plastic material shell A1；Wherein, the condition of extrusion includes：The rotating speed of screw rod is 200 revs/min
The temperature of clock, feeding section is 200 DEG C, and the temperature of fusion plastification section is 240 DEG C, and the temperature for mixing homogenizing zone is 210 DEG C, and melt is defeated
It is 180 DEG C to send the temperature of metering section.
Embodiment 2
Modified coating is mixed with montmorillonite, then dried, be placed in sulfuric acid solution (mass concentration 60%) and soaked
Bubble is filtered to obtain modified montmorillonoid；Wherein, modified coating is by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate
Be mixed to get (dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate according to mass ratio be 1:10:20 ratio is mixed
It closes)；By 6g modified montmorillonoids, 100g natural rubbers, 26g polyethylene, 40g alkyd resins, 70g acrylic resins, 6g organosilicons
Fire retardant, 5g silicates (sodium metasilicate), 5g polystyrene wax and the mixing of 6g terephthalic acid ester compounds, obtain mixture M；
Mixture M is added twin-screw extrude, extruded, molding (is molded by the way of hot-forming, and the temperature of hot pressing is
40 DEG C, the pressure of hot pressing is 30MPa) after obtain battery flame retardant plastic material shell A2；Wherein, the condition of extrusion includes：The rotating speed of screw rod
It it is 300 revs/min, the temperature of feeding section is 210 DEG C, and the temperature of fusion plastification section is 250 DEG C, and the temperature for mixing homogenizing zone is
220 DEG C, the temperature of melt conveying metering section is 200 DEG C.
Embodiment 3
Modified coating is mixed with montmorillonite, then dried, be placed in sulfuric acid solution (mass concentration 50%) and soaked
Bubble is filtered to obtain modified montmorillonoid；Wherein, modified coating is by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate
Be mixed to get (dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate according to mass ratio be 1:10:15 ratio is mixed
It closes)；By 5g modified montmorillonoids, 100g natural rubbers, 25g polyethylene, 35g alkyd resins, 60g acrylic resins, 5g organosilicons
Fire retardant, 4.5g talcum powder, 4.5g oleamides and the mixing of 5g trimellitic acid esters compounds, obtain mixture M；By mixture
M is added twin-screw extrude, and extruded, molding (is molded by the way of hot-forming, and the temperature of hot pressing is 40 DEG C, heat
The pressure of pressure be 30MPa) after obtain battery flame retardant plastic material shell A3；Wherein, the condition of extrusion includes：The rotating speed of screw rod be 250 turns/
Minute, the temperature of feeding section is 205 DEG C, and the temperature of fusion plastification section is 245 DEG C, and the temperature for mixing homogenizing zone is 215 DEG C, melt
The temperature for conveying metering section is 190 DEG C.
Embodiment 4
It is prepared according to the method for embodiment 3, unlike, relative to the natural rubber of 100g, modified montmorillonoid
Dosage is 2g, and the dosage of polyethylene is 20g, and the dosage of alkyd resin is 25g, and the dosage of acrylic resin is 40g, organosilicon resistance
The dosage for firing agent is 2g, and the dosage of filler is 2g, and the dosage of lubricant is 2g, and the dosage of plasticizer is 2g, obtains battery resistance
Fire plastic housing A4.
Embodiment 5
It is prepared according to the method for embodiment 3, unlike, relative to the natural rubber of 100g, modified montmorillonoid
Dosage is 8g, and the dosage of polyethylene is 30g, and the dosage of alkyd resin is 45g, and the dosage of acrylic resin is 80g, organosilicon resistance
The dosage for firing agent is 10g, and the dosage of filler is 7g, and the dosage of lubricant is 7g, and the dosage of plasticizer is 8g, obtains battery resistance
Fire plastic housing A5.
Embodiment 6
It is prepared according to the method for embodiment 3, unlike, relative to the natural rubber of 100g, modified montmorillonoid
Dosage is 1g, and the dosage of polyethylene is 15g, and the dosage of alkyd resin is 20g, and the dosage of acrylic resin is 35g, organosilicon resistance
The dosage for firing agent is 1g, and the dosage of filler is 1g, and the dosage of lubricant is 1g, and the dosage of plasticizer is 1g, obtains battery resistance
Fire plastic housing A6.
Embodiment 7
It is prepared according to the method for embodiment 3, unlike, relative to the natural rubber of 100g, modified montmorillonoid
Dosage is 10g, and the dosage of polyethylene is 35g, and the dosage of alkyd resin is 50g, and the dosage of acrylic resin is 85g, organosilicon
The dosage of fire retardant is 15g, and the dosage of filler is 10g, and the dosage of lubricant is 10g, and the dosage of plasticizer is 10g, is obtained
Battery flame retardant plastic material shell A7.
Comparative example 1
It is prepared according to the method for embodiment 3, unlike, the condition of expressing technique includes：The rotating speed of screw rod is 150
Rev/min, the temperature of feeding section is 180 DEG C, and the temperature of fusion plastification section is 220 DEG C, and the temperature for mixing homogenizing zone is 180 DEG C,
The temperature of melt conveying metering section is 150 DEG C, obtains battery flame retardant plastic material shell D1.
Comparative example 2
It is prepared according to the method for embodiment 3, unlike, the condition of expressing technique includes：The rotating speed of screw rod is 350
Rev/min, the temperature of feeding section is 240 DEG C, and the temperature of fusion plastification section is 260 DEG C, and the temperature for mixing homogenizing zone is 240 DEG C,
The temperature of melt conveying metering section is 220 DEG C, obtains battery flame retardant plastic material shell D2.
Comparative example 3
It is prepared according to the method for embodiment 3, unlike, do not include polyethylene in raw material, obtains battery flame retardant plastic
Material shell D3.
Comparative example 4
It is prepared according to the method for embodiment 3, unlike, do not include alkyd resin in raw material, it is fire-retardant to obtain battery
Plastic housing D4.
Comparative example 5
It is prepared according to the method for embodiment 3, unlike, do not include acrylic resin in raw material, obtains battery resistance
Fire plastic housing D5.
Test case
Tensile strength parameter is measured by the method for GB1040-2006, and elongation at break parameter is to pass through GB1040-
2006 method measures, and flame retardant property passes through GB/T2406.2-2009《Plastics measure burning behavior with oxygen index method》Method
It measures.
Table 1
| Embodiment is numbered | Tensile strength (Mpa) | Elongation at break (%) | Oxygen index (OI) |
| Embodiment 1 | 16.9 | 251 | 59 |
| Embodiment 2 | 16.3 | 253 | 52 |
| Embodiment 3 | 16.5 | 241 | 54 |
| Embodiment 4 | 15.0 | 221 | 40 |
| Embodiment 5 | 14.1 | 215 | 45 |
| Embodiment 6 | 12.3 | 173 | 32 |
| Embodiment 7 | 11.2 | 172 | 32 |
| Comparative example 1 | 11.5 | 171 | 34 |
| Comparative example 2 | 11.6 | 174 | 22 |
| Comparative example 3 | 11.7 | 161 | 24 |
| Comparative example 4 | 10.2 | 165 | 21 |
| Comparative example 5 | 10.9 | 169 | 22 |
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail can carry out a variety of simple variants to technical scheme of the present invention within the scope of the technical concept of the present invention, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of preparation method of battery flame retardant plastic material shell, which is characterized in that the preparation method includes：
(1) modified coating is mixed with montmorillonite, then dries, is placed in sulfuric acid solution and is impregnated, filtered to be modified
Montmorillonite；Wherein, modified coating is mixed to get by dodecyl sodium sulfate, polyvinyl alcohol and lauryl sulfate；
(2) by modified montmorillonoid, natural rubber, polyethylene, alkyd resin, acrylic resin, organic silicon fibre retardant, filler,
Lubricant and plasticizer mixing, obtain mixture M；
(3) mixture M is added twin-screw extrude, battery flame retardant plastic material shell is obtained after extruded, molding；Wherein, it squeezes out
Condition include：The rotating speed of screw rod is 200-300 revs/min, and the temperature of feeding section is 200-210 DEG C, the temperature of fusion plastification section
Degree is 240-250 DEG C, and the temperature for mixing homogenizing zone is 210-220 DEG C, and the temperature of melt conveying metering section is 180-200 DEG C.
2. preparation method according to claim 1, wherein relative to the natural rubber of 100 parts by weight, modified montmorillonoid
Dosage is 2-8 parts by weight, and the dosage of polyethylene is 20-30 parts by weight, and the dosage of alkyd resin is 25-45 parts by weight, acrylic acid
The dosage of resin is 40-80 parts by weight, and the dosage of organic silicon fibre retardant is 2-10 parts by weight, and the dosage of filler is 2-7 weight
Part, the dosage of lubricant is 2-7 parts by weight, and the dosage of plasticizer is 2-8 parts by weight.
3. preparation method according to claim 2, wherein relative to the natural rubber of 100 parts by weight, modified montmorillonoid
Dosage is 4-6 parts by weight, and the dosage of polyethylene is 24-26 parts by weight, and the dosage of alkyd resin is 30-40 parts by weight, acrylic acid
The dosage of resin is 50-70 parts by weight, and the dosage of organic silicon fibre retardant is 4-6 parts by weight, and the dosage of filler is 4-5 weight
Part, the dosage of lubricant is 4-5 parts by weight, and the dosage of plasticizer is 4-6 parts by weight.
4. preparation method according to claim 2 or 3, wherein in step (1), dodecyl sodium sulfate, polyvinyl alcohol
With lauryl sulfate according to mass ratio be 1:10:The ratio of 10-20 is mixed.
5. preparation method according to claim 4, wherein the mass concentration of sulfuric acid solution is 40-60%.
6. preparation method according to claim 2 or 3, wherein filler is selected from calcium carbonate, clay, silicate and talcum
It is one or more in powder.
7. preparation method according to claim 2 or 3, wherein lubricant is selected from stearic acid, stearate, polystyrene
It is one or more in wax, paraffin and oleamide.
8. preparation method according to claim 2 or 3, wherein plasticizer is selected from phthalate compound, to benzene
It is one or more in diformic ester compound and trimellitic acid esters compound.
9. preparation method according to claim 2 or 3, wherein the weight average molecular weight of polyethylene is 5000-8000, alkyd
The weight average molecular weight of resin is 9000-12000, and the weight average molecular weight of polyvinyl alcohol is 6000-8000.
10. a kind of battery flame retardant plastic material shell, which is characterized in that the battery flame retardant plastic material shell is by any one in claim 1-9
Preparation method described in is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447511.6A CN108559141A (en) | 2018-05-11 | 2018-05-11 | Battery flame retardant plastic material shell and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447511.6A CN108559141A (en) | 2018-05-11 | 2018-05-11 | Battery flame retardant plastic material shell and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108559141A true CN108559141A (en) | 2018-09-21 |
Family
ID=63538644
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810447511.6A Withdrawn CN108559141A (en) | 2018-05-11 | 2018-05-11 | Battery flame retardant plastic material shell and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108559141A (en) |
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2018
- 2018-05-11 CN CN201810447511.6A patent/CN108559141A/en not_active Withdrawn
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Application publication date: 20180921 |