A kind of degradable environment-friendly type lithium battery pack case and preparation method thereofTechnical field
The present invention relates to technical field of lithium batteries, and in particular to a kind of degradable environment-friendly type lithium battery pack case and its preparationMethod.
Background technique
Battery of mobile phone is that the energy storage tool of electric power is provided for mobile phone, is consisted of three parts: battery core, protection circuit and shell,Battery of mobile phone generally be lithium battery and nickel-metal hydride battery, lithium system battery is divided into lithium battery and lithium ion battery, mobile phone and notesWhat this computer used is all lithium ion battery, and usual people's custom is called lithium battery, and battery generally uses the material containing elemental lithiumMaterial is used as electrode, is the representative of modern high performance battery, and real lithium battery is rarely applied to daily electricity since risk is bigSub- product, lithium battery is one kind using lithium metal or lithium alloy as negative electrode material, using the one-shot battery of non-aqueous electrolytic solution, withRechargeable battery lithium ion battery with lithium ion polymer battery be it is different, the inventor of lithium battery is Edison, due toThe chemical characteristic of lithium metal is very active, so that the processing of lithium metal, preservation, use, very high to environmental requirement, so, lithiumBattery is not applied for a long time, and with the development of twentieth century end microelectric technique, the equipment of miniaturization is increasing, to electricitySource proposes very high requirement, and lithium battery enters the large-scale practical stage therewith, and mobile phone produces on a large scale, causes lithium electricPond output is increased with very surprising quantity, is become more and more important the research and development of associated materials and technology, is then wrappedThe shell consumption for filling lithium battery is also more and more, and then environmental pollution is also aggravating.
Existing Chinese patent literature (publication number: CN102431239B) discloses a kind of polymer lithium ion battery core outsourcingFill moulding material, it is desirable to provide one kind has superpower barrier property, and good cold stamping shaped property, paracentesis resistance, electrolyte resistance is steadyIt is qualitative, it is resistant to organic solvent and high volatile material battery outer package forming material.Its extrernal resistance layer laminate body is by leastOne layer of heat-resistant resin film: PET, BOPA, PEN is optionally first, both wherein and deposit coextru-lamination composition, barrier layerThe Fe that aluminium foil in laminated body is at least 0.9wt%~1.5wt% containing content, high-obstruction laminated body includes base, functionLayer and hot sealing layer, the base be by PP, CPP, PE, PET, PA or MXD6, MPE elastomer blend, PVDC, EVOH, PEN,The combination of at least two film substrates or the copolymerization body thin film of compound composition two-by-two in GT, on the copolymer film substrateIt is coated with the water-fast modified polyvinylalcohol of high-barrier (PVA) coated film, the material degradation performance is poor, and environmentally protective performance is insufficient, becauseAnd there is still a need for further research and development.
Summary of the invention
The purpose of the present invention is to provide a kind of degradable environment-friendly type lithium battery pack cases and preparation method thereof, on solvingState the problem of proposing in background technique.
To achieve the above object, the invention provides the following technical scheme:
A kind of degradable environment-friendly type lithium battery pack case, the raw material including following parts by weight:
Chitin modified liquid 60-70 parts, 20-30 parts of humic acid Modified Starch liquid, 15-25 parts of acetate fiber, aluminium silicate fiberTie up 5-11 parts, 10-20 parts of single-layer graphene, 4-8 parts of magnesium salt whisker, 5-9 parts of vermiculite power, 3-6 parts of zinc oxide, surfactant 2-4 parts.
Be as further scheme of the invention: the degradable environment-friendly type lithium battery pack case includes following parts by weightRaw material:
Chitin modified liquid 65-70 parts, 25-30 parts of humic acid Modified Starch liquid, 20-25 parts of acetate fiber, aluminium silicate fiberTie up 7-11 parts, 15-20 parts of single-layer graphene, 6-8 parts of magnesium salt whisker, 7-9 parts of vermiculite power, 4-6 parts of zinc oxide, surfactant 3-4 parts.
Be as further scheme of the invention: the degradable environment-friendly type lithium battery pack case includes following parts by weightRaw material:
65 parts of chitin modified liquid, 25 parts of humic acid Modified Starch liquid, 20 parts of acetate fiber, 8 parts of alumina silicate fibre, single layer15 parts of graphene, 6 parts of magnesium salt whisker, 7 parts of vermiculite power, 4.5 parts of zinc oxide, 3 parts of surfactant.
Be as further scheme of the invention: the preparation method of the chitin modified liquid be by chitosan and ethyl alcohol intoRow is configured to the chitosan solution that mass fraction is 40-50%, then adds glacial acetic acid and adjusts pH to 4.0-5.0, withThe Plant Powder of chitosan solution total amount 20-30% is added afterwards, and ultrasonic disperse 30-40min then adds people's Plant Powder total weight again30% epoxidized soybean oil, then adds the diethyl amino propylamine of epoxidized soybean oil total amount 10%, stirs 1-2h, then again fromThe heart, washing, drying are to get chitin modified liquid of the invention.
Be as further scheme of the invention: the humic acid Modified Starch liquid and preparation method thereof is to be added to starchIt is stirred in ionized water, then carries out heating water bath, bath temperature is 85-95 DEG C, and water-bath 1-3h then adds humicAcid is cooled to room temperature, and ultrasonic disperse 20-30min is then centrifuged again, washs, dries.
Be as further scheme of the invention: the starch, humic acid substance mass ratio be 5:1.
Be as further scheme of the invention: the surfactant is cetyl trimethylammonium bromide.
The present invention also provides a kind of methods for preparing degradable environment-friendly type lithium battery pack case, comprising the following steps:
Step 1, by chitin modified liquid, humic acid Modified Starch liquid, acetate fiber, alumina silicate fibre, mono-layer graphiteAlkene, magnesium salt whisker, vermiculite power, zinc oxide, surfactant are added sequentially in high-speed mixer, and speed of agitator rises to 800-1000r/min stirs 40-50min, obtains compound material A；
Compound material A is added in double screw extruder and squeezes out by step 2, and extrusion temperature is 170-180 DEG C, thenIt cools down again to get degradable environment-friendly type lithium battery pack case of the invention.
Compared with prior art, the present invention have it is following the utility model has the advantages that
Chitosan is passed through modification, then the associated with humic acid Modified Starch liquid by the present invention, can substantially improve degradationProperty, green environmental protection is improved, the acetate fiber then added, alumina silicate fibre improve the strength character of material, the list of additionThe connectivity of storeroom can be improved in layer graphene, and the addition of magnesium salt whisker makes to connect between raw material more closely, phase between raw materialMutual associated greatly improves the performances such as material degradation, stabilization, low in cost, and preparation flow is easy, is suitble to medium-sized and small enterprises production.
Specific embodiment
Combined with specific embodiments below, technical scheme in the embodiment of the invention is clearly and completely described, showsSo, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present inventionExample is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs toIn the scope of protection of the invention.
Embodiment 1:
A kind of degradable environment-friendly type lithium battery pack case of the present embodiment, the raw material including following parts by weight:
60 parts of chitin modified liquid, 20 parts of humic acid Modified Starch liquid, 15 parts of acetate fiber, 5 parts of alumina silicate fibre, single layer10 parts of graphene, 4 parts of magnesium salt whisker, 5 parts of vermiculite power, 3 parts of zinc oxide, 2 parts of surfactant.
The preparation method of the chitin modified liquid of the present embodiment is to carry out chitosan and ethyl alcohol to be configured to quality pointThe chitosan solution that number is 40% then adds glacial acetic acid and adjusts pH to 4.0, then adds chitosan solution total amount 20%Plant Powder, ultrasonic disperse 30min, then again plus people's Plant Powder total weight 30% epoxidized soybean oil, then add epoxyThe diethyl amino propylamine of soybean oil total amount 10% stirs 1h, is then centrifuged, washs again, drying and change to get chitosan of the inventionProperty liquid.
The humic acid Modified Starch liquid and preparation method thereof of the present embodiment is to be add to deionized water starch to be stirred, withAfter carry out heating water bath, bath temperature is 85 DEG C, and water-bath 1h then adds humic acid, is cooled to room temperature, ultrasonic disperse20min is then centrifuged again, washs, dries.
The starch of the present embodiment, the mass ratio of humic acid substance are 5:1.
The surfactant of the present embodiment is cetyl trimethylammonium bromide.
A kind of method preparing degradable environment-friendly type lithium battery pack case of the present embodiment, comprising the following steps:
Step 1, by chitin modified liquid, humic acid Modified Starch liquid, acetate fiber, alumina silicate fibre, mono-layer graphiteAlkene, magnesium salt whisker, vermiculite power, zinc oxide, surfactant are added sequentially in high-speed mixer, and speed of agitator rises to 800r/Min stirs 40min, obtains compound material A；
Compound material A is added in double screw extruder and squeezes out by step 2, and extrusion temperature is 170 DEG C, then cold againBut to get degradable environment-friendly type lithium battery pack case of the invention.
Embodiment 2:
A kind of degradable environment-friendly type lithium battery pack case of the present embodiment, the raw material including following parts by weight:
70 parts of chitin modified liquid, 30 parts of humic acid Modified Starch liquid, 25 parts of acetate fiber, 11 parts of alumina silicate fibre, listLayer 20 parts of graphene, 8 parts of magnesium salt whisker, 9 parts of vermiculite power, 6 parts of zinc oxide, 4 parts of surfactant.
The preparation method of the chitin modified liquid of the present embodiment is to carry out chitosan and ethyl alcohol to be configured to quality pointThe chitosan solution that number is 50% then adds glacial acetic acid and adjusts pH to 5.0, then adds chitosan solution total amount 30%Plant Powder, ultrasonic disperse 40min, then again plus people's Plant Powder total weight 30% epoxidized soybean oil, then add epoxyThe diethyl amino propylamine of soybean oil total amount 10% stirs 2h, is then centrifuged, washs again, drying and change to get chitosan of the inventionProperty liquid.
The humic acid Modified Starch liquid and preparation method thereof of the present embodiment is to be add to deionized water starch to be stirred, withAfter carry out heating water bath, bath temperature is 95 DEG C, and water-bath 3h then adds humic acid, is cooled to room temperature, ultrasonic disperse30min is then centrifuged again, washs, dries.
The starch of the present embodiment, the mass ratio of humic acid substance are 5:1.
The surfactant of the present embodiment is cetyl trimethylammonium bromide.
A kind of method preparing degradable environment-friendly type lithium battery pack case of the present embodiment, comprising the following steps:
Step 1, by chitin modified liquid, humic acid Modified Starch liquid, acetate fiber, alumina silicate fibre, mono-layer graphiteAlkene, magnesium salt whisker, vermiculite power, zinc oxide, surfactant are added sequentially in high-speed mixer, and speed of agitator rises to 1000r/Min stirs 50min, obtains compound material A；
Compound material A is added in double screw extruder and squeezes out by step 2, and extrusion temperature is 180 DEG C, then cold againBut to get degradable environment-friendly type lithium battery pack case of the invention.
Embodiment 3:
A kind of degradable environment-friendly type lithium battery pack case of the present embodiment, the raw material including following parts by weight:
65 parts of chitin modified liquid, 25 parts of humic acid Modified Starch liquid, 20 parts of acetate fiber, 8 parts of alumina silicate fibre, single layer15 parts of graphene, 6 parts of magnesium salt whisker, 7 parts of vermiculite power, 4.5 parts of zinc oxide, 3 parts of surfactant.
The preparation method of the chitin modified liquid of the present embodiment is to carry out chitosan and ethyl alcohol to be configured to quality pointThe chitosan solution that number is 45% then adds glacial acetic acid and adjusts pH to 4.5, then adds chitosan solution total amount 25%Plant Powder, ultrasonic disperse 35min, then again plus people's Plant Powder total weight 30% epoxidized soybean oil, then add epoxyThe diethyl amino propylamine of soybean oil total amount 10% stirs 1.5h, is then centrifuged, washs again, drying to get chitosan of the inventionModification liquid.
The humic acid Modified Starch liquid and preparation method thereof of the present embodiment is to be add to deionized water starch to be stirred, withAfter carry out heating water bath, bath temperature is 90 DEG C, and water-bath 2h then adds humic acid, is cooled to room temperature, ultrasonic disperse25min is then centrifuged again, washs, dries.
The starch of the present embodiment, the mass ratio of humic acid substance are 5:1.
The surfactant of the present embodiment is cetyl trimethylammonium bromide.
A kind of method preparing degradable environment-friendly type lithium battery pack case of the present embodiment, comprising the following steps:
Step 1, by chitin modified liquid, humic acid Modified Starch liquid, acetate fiber, alumina silicate fibre, mono-layer graphiteAlkene, magnesium salt whisker, vermiculite power, zinc oxide, surfactant are added sequentially in high-speed mixer, and speed of agitator rises to 9000r/Min stirs 45min, obtains compound material A；
Compound material A is added in double screw extruder and squeezes out by step 2, and extrusion temperature is 175 DEG C, then cold againBut to get degradable environment-friendly type lithium battery pack case of the invention.
Comparative example 1:
It is not added with chitin modified liquid as different from Example 3.
Comparative example 2:
Humic acid Modified Starch liquid is modified without humic acid as different from Example 3.
The encapsulating material the performance test results of embodiment 1-3 and comparative example 1-2 preparation are as follows
| Mass loss rate (%) |
| Embodiment 1 | 45 |
| Embodiment 2 | 43 |
| Embodiment 3 | 47 |
| Comparative example 1 | 29 |
| Comparative example 2 | 38 |
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er QieIn the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matterFrom the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended powerBenefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claimsVariation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrappedContaining an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art shouldIt considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the artThe other embodiments being understood that.