CN115109357A - Fluororubber sealing nail material for power battery plugging liquid and preparation method thereof - Google Patents

Fluororubber sealing nail material for power battery plugging liquid and preparation method thereof Download PDF

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Publication number
CN115109357A
CN115109357A CN202210767779.4A CN202210767779A CN115109357A CN 115109357 A CN115109357 A CN 115109357A CN 202210767779 A CN202210767779 A CN 202210767779A CN 115109357 A CN115109357 A CN 115109357A
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Prior art keywords
fluororubber
sealing nail
power battery
parts
nail material
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Inventor
敖煜之
简鹏
程亚南
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Jiangsu Zhongyu Rubber Plastic Technology Co ltd
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Jiangsu Zhongyu Rubber Plastic Technology Co ltd
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Priority to CN202210767779.4A priority Critical patent/CN115109357A/en
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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
    • 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
    • C08L27/12—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 fluorine atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a fluororubber sealing nail material for power battery plugging liquid and a preparation method thereof, wherein the fluororubber sealing nail material for power battery plugging liquid is prepared from the following substances: fluororubber, active agent, processing aid, reinforcing filler, cross-linking agent, auxiliary cross-linking agent, peroxide scorch retarder and colorant. According to the invention, through optimizing the raw materials of the components and optimizing the formula system and proportion, the fluororubber sealing nail material has the advantages of higher crosslinking degree, electrical insulation, low mass change and volume change, better sealing property and longer service life.

Description

Fluororubber sealing nail material for power battery plugging liquid and preparation method thereof
Technical Field
The invention relates to the technical field of modified rubber, in particular to a fluororubber sealing nail material for a power battery plugging liquid and a preparation method thereof.
Background
At present, the materials for the liquid plugging sealing nail of the power battery are mainly thermoplastic elastomers, and no fluororubber materials are applied to the field; due to the defects of poor heat resistance, poor elasticity, short service life, high price and the like existing in the use process of the thermoplastic elastomer, the fluororubber sealing nail material for the liquid plugging of the power battery is developed. Because the sealing nail material has one end which needs to contact with the electrolyte in the use process, the fluororubber sealing nail needs to have the characteristics of better medium resistance (no corrosion phenomenon, smaller volume and mass change), better insulativity and sealability, long service life and the like. The fluororubber sealing nail has high hardness and needs high crosslinking degree, so that the reduction of mechanical property and insulating property caused by volume and mass change is reduced.
Disclosure of Invention
The invention aims to solve the existing problems and provides a fluororubber sealing nail material for power battery liquid plugging and a preparation method thereof.
The invention is realized by the following technical scheme:
a fluororubber sealing nail material for power battery liquid plugging is prepared from the following substances in parts by weight:
50-100 parts of fluororubber, 3-6 parts of active agent, 0.5-2 parts of processing aid, 10-50 parts of reinforcing filler, 1-5 parts of cross-linking agent, 2-6 parts of auxiliary cross-linking agent, 0.5-2 parts of peroxide anti-scorching agent and 0.6 part of coloring agent.
Further, the fluororubber is peroxide fluororubber.
Further, the active agent is any one of zinc oxide, magnesium oxide and zinc stearate.
Further, the processing aid is at least one of aliphatic hydrocarbon derivatives, waxes, organic silicon compounds, fatty acid derivatives and polyvinyl alcohol.
Furthermore, the reinforcing filler is any one of carbon black, silicates, sulfates and composite mineral fillers.
Further, the cross-linking agent is any one of dibenzoyl peroxide, 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, No. 1 vulcanizing agent and bisphenol AF.
Further, the auxiliary crosslinking agent is any one of triallyl isocyanurate, benzyltriphenylphosphonium chloride and sulfur.
Further, the peroxide scorch retarder is any one of Roprocess Ht and AD.
Further, the colorant is PG312 yellow.
A preparation method of a fluororubber sealing nail material for a power battery plugging solution comprises the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide anti-scorching agent and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40-50 ℃, plasticating the crude fluororubber for 1-5min, adding the obtained primary mixed material, mixing and dispersing for 10-20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5-10min, adjusting the roller spacing to 0.5mm, and thinly passing and wrapping for 5 times to obtain mixed rubber for later use;
s2, small press molding:
weighing the mixed rubber prepared in the step S1, putting the mixed rubber into a sealing nail mold preheated at 180 ℃ under the pressure of 10-18MPa, vulcanizing for 5-10min for a while, then carrying out compression molding, trimming and secondary vulcanization, and controlling the time duration of the secondary vulcanization to be 4h to finally obtain the fluororubber sealing nail material.
Carbon black is not used in the material, and the carbon black belongs to semiconductors, so that the material is conductive easily under high voltage when the dispersibility is poor, and the rubber sealing nail material has high insulation resistance. The improvement of the crosslinking density of the peroxide fluororubber can lead to the shortening of scorching time, seriously influences the processability of products and has the risk of cracking of the products, so that the scorch retarder is added, the crosslinking density is improved, the processing safety is ensured, and the products are endowed with excellent electrolyte resistance (corrosion resistance, low volume change and quality change) and sealing property.
Compared with the prior art, the invention has the following advantages:
the invention provides a fluororubber sealing nail material for a power battery plugging liquid, which is characterized in that fluororubber is used for replacing a thermoplastic elastomer as a sealing material for the first time, various chemical media such as high temperature resistance, electrolyte resistance and the like inherent in the fluororubber material are fully utilized, and the fluororubber sealing nail material is weather-resistant, aging-resistant, excellent in high-temperature voltage change and the like, has good popularization and application values by adjusting the hardness of the material, improving the crosslinking degree of the material and ensuring the service life of the material through the insulativity of the material.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A fluororubber sealing nail material for a power battery plugging solution is prepared from the following substances in parts by weight:
100 parts of peroxide fluororubber;
3 parts of zinc oxide;
1 part of carnauba wax;
24 parts of nano kaolin (US-75);
3 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane;
1.5 parts of triallyl isocyanurate;
roces Ht 1 portion;
PG312 yellow 0.6 parts.
A preparation method of a fluororubber sealing nail material for a power battery plugging solution comprises the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide anti-scorching agent and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40 ℃, plasticating the raw fluororubber for 5min, adding the obtained primary mixed material, mixing and dispersing for 20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5min, adjusting the roller spacing to 0.5mm, and performing thin passing and triangular wrapping for 5 times to obtain mixed rubber for later use;
s2, small press molding:
weighing the rubber compound prepared in the step S1, putting the rubber compound into a sealing nail mold preheated at 160 ℃, vulcanizing for 5min under the pressure of 10Mpa, then carrying out compression molding, trimming and secondary vulcanization, controlling the time of the secondary vulcanization to be 4h, and finally preparing the fluororubber sealing nail material.
Example 2
A fluororubber sealing nail material for a power battery plugging solution is prepared from the following substances in parts by weight:
100 parts of peroxide fluororubber;
5 parts of zinc oxide;
1 part of carnauba wax;
24 parts of nano kaolin (US-75);
2 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane;
4 parts of triallyl isocyanurate;
roces Ht 1 portion;
0.6 part of PG312 yellow.
A preparation method of a fluororubber sealing nail material for a power battery plugging solution comprises the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide scorch retarder and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40 ℃, plasticating the crude fluororubber for 5min, adding the obtained primary mixed material, mixing and dispersing for 20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5min, adjusting the roller spacing to 0.5mm, and performing thin passing and triangular wrapping for 5 times to obtain mixed rubber for later use;
s2, small press molding:
and (4) weighing the mixed rubber prepared in the step S1, putting the mixed rubber into a sealing nail mold preheated at 160 ℃, vulcanizing for 5min for one time under the pressure of 10Mpa, then carrying out compression molding, then trimming and carrying out secondary vulcanization, and controlling the time of the secondary vulcanization to be 4h to finally prepare the fluororubber sealing nail material.
Example 3
A fluororubber sealing nail material for a power battery plugging solution is prepared from the following substances in parts by weight:
100 parts of peroxide fluororubber;
5 parts of zinc oxide;
1 part of carnauba wax;
24 parts of nano kaolin (US-75);
3 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane;
5 parts of triallyl isocyanurate;
2.5 parts of Roces Ht;
PG312 yellow 0.6 parts.
A preparation method of a fluororubber sealing nail material for a power battery plugging solution comprises the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide anti-scorching agent and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40 ℃, plasticating the crude fluororubber for 5min, adding the obtained primary mixed material, mixing and dispersing for 20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5min, adjusting the roller spacing to 0.5mm, and performing thin passing and triangular wrapping for 5 times to obtain mixed rubber for later use;
s2, small press molding:
and (4) weighing the mixed rubber prepared in the step S1, putting the mixed rubber into a sealing nail mold preheated at 170 ℃, vulcanizing for 8min for one time under the pressure of 14MPa, then carrying out compression molding, then trimming and carrying out secondary vulcanization, and controlling the time duration of the secondary vulcanization to be 4h to finally prepare the fluororubber sealing nail material.
Example 4
A fluororubber sealing nail material for a power battery plugging solution is prepared from the following substances in parts by weight:
100 parts of peroxide fluororubber;
5 parts of zinc oxide;
1 part of carnauba wax;
30 parts of nano kaolin (US-75);
1.5 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane;
3 parts of triallyl isocyanurate;
1.5 parts of Roces Ht;
PG312 yellow 0.6 parts.
A preparation method of a fluororubber sealing nail material for a power battery plugging solution comprises the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide anti-scorching agent and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40 ℃, plasticating the crude fluororubber for 5min, adding the obtained primary mixed material, mixing and dispersing for 20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5min, adjusting the roller spacing to 0.5mm, and performing thin passing and triangular wrapping for 5 times to obtain mixed rubber for later use;
s2, small press molding:
and (3) weighing the rubber compound prepared in the step S1, putting the rubber compound into a sealing nail mold preheated at 175 ℃, vulcanizing for 8min under the pressure of 16Mpa for one time, carrying out compression molding, then trimming and carrying out secondary vulcanization, controlling the time of the secondary vulcanization to be 4h, and finally preparing the fluororubber sealing nail material.
Example 5
A fluororubber sealing nail material for a power battery plugging solution is prepared from the following substances in parts by weight:
100 parts of peroxide fluororubber;
5 parts of zinc oxide;
1 part of carnauba wax;
30 parts of nano kaolin (US-75);
4 parts of 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane;
6 parts of triallyl isocyanurate;
2.5 parts of Roces Ht;
PG312 yellow 0.6 parts.
A preparation method of a fluororubber sealing nail material for a power battery plugging solution comprises the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide anti-scorching agent and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40 ℃, plasticating the crude fluororubber for 5min, adding the obtained primary mixed material, mixing and dispersing for 20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5min, adjusting the roller spacing to 0.5mm, and performing thin passing and triangular wrapping for 5 times to obtain mixed rubber for later use;
s2, compression molding by a small press:
and (4) weighing the mixed rubber prepared in the step S1, putting the mixed rubber into a sealing nail mold preheated at 180 ℃, vulcanizing for 10min for one time under the pressure of 18MPa, then carrying out compression molding, then trimming and carrying out secondary vulcanization, and controlling the time duration of the secondary vulcanization to be 4h to finally prepare the fluororubber sealing nail material.
The following performance tests were performed on the nail sealing materials prepared in accordance with examples 1 to 5 above, and the results are shown in table 1:
TABLE 1
Figure BDA0003726268510000071
As can be seen from the above table 1, the fluororubber sealing nail material for the power battery plugging solution obtained by the method of the invention has good comprehensive performance and great market competitiveness.

Claims (10)

1. A fluororubber sealing nail material for a power battery plugging solution is characterized by being prepared from the following substances in parts by weight:
50-100 parts of fluororubber, 3-6 parts of active agent, 0.5-2 parts of processing aid, 10-50 parts of reinforcing filler, 1-5 parts of cross-linking agent, 2-6 parts of auxiliary cross-linking agent, 0.5-2 parts of peroxide anti-scorching agent and 0.6 part of coloring agent.
2. The fluororubber sealing nail material for the power battery plugging solution according to claim 1, characterized in that the fluororubber is peroxide fluororubber.
3. The fluororubber sealing nail material for the power battery plugging fluid according to claim 1, wherein the active agent is any one of zinc oxide, magnesium oxide and zinc stearate.
4. The fluororubber sealing nail material for the power battery plugging solution according to claim 1, wherein the processing aid is at least one of aliphatic hydrocarbon derivatives, waxes, organosilicon compounds, fatty acid derivatives and polyvinyl alcohol.
5. The fluororubber sealing nail material for the power battery plugging fluid according to claim 1, wherein the reinforcing filler is any one of carbon black, silicates, sulfates and composite mineral fillers.
6. The fluororubber sealing nail material for the power battery plugging solution according to claim 1, wherein the crosslinking agent is any one of dibenzoyl peroxide, 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, No. 1 vulcanizing agent and bisphenol AF.
7. The fluororubber sealing nail material for the power battery plugging solution according to claim 1, wherein the auxiliary crosslinking agent is any one of triallyl isocyanurate, benzyltriphenylphosphonium chloride and sulfur.
8. The fluororubber sealing nail material for power battery liquid shutoff according to claim 1, characterized in that the peroxide anti-scorching agent is any one of Roprocesses Ht and AD.
9. The fluororubber sealing nail material for the power battery plugging fluid according to claim 1, wherein the colorant is PG312 yellow.
10. A preparation method of a fluororubber sealing nail material for liquid plugging of a power battery is characterized by comprising the following steps:
s1, mixing materials by a milling machine:
firstly, accurately weighing an active agent, a processing aid, a reinforcing filler, an auxiliary crosslinking agent, a peroxide anti-scorching agent and a coloring agent, and mixing and stirring uniformly to obtain a primary mixed material for later use; heating an open mill to 40-50 ℃, plasticating the crude fluororubber for 1-5min, adding the obtained primary mixed material, mixing and dispersing for 10-20min by the open mill, adding a crosslinking agent, continuously mixing and dispersing for 5-10min, adjusting the roller spacing to 0.5mm, and thinly passing and wrapping for 5 times to obtain mixed rubber for later use;
s2, small press molding:
weighing the mixed rubber prepared in the step S1, putting the mixed rubber into a sealing nail mold preheated at 180 ℃ under the pressure of 10-18MPa, vulcanizing for 5-10min for a while, then carrying out compression molding, trimming and secondary vulcanization, and controlling the time duration of the secondary vulcanization to be 4h to finally obtain the fluororubber sealing nail material.
CN202210767779.4A 2022-07-01 2022-07-01 Fluororubber sealing nail material for power battery plugging liquid and preparation method thereof Pending CN115109357A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115584141A (en) * 2022-10-27 2023-01-10 四川道弘新材料有限公司 Lithium battery electrolyte-resistant bisphenol high-fluorine fluororubber compound and preparation method thereof
CN115926344A (en) * 2022-12-31 2023-04-07 氟乐泰科（厦门）新材料有限公司 Modified fluororubber compound and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109651736A (en) * 2018-12-27 2019-04-19 广州弗西林橡塑有限公司 A kind of end cap seal loop material of lithium battery electrolytes and preparation method thereof
CN111269511A (en) * 2020-03-18 2020-06-12 江苏中煜橡塑科技有限公司 Insulating fluororubber material for sealing lithium battery and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109651736A (en) * 2018-12-27 2019-04-19 广州弗西林橡塑有限公司 A kind of end cap seal loop material of lithium battery electrolytes and preparation method thereof
CN111269511A (en) * 2020-03-18 2020-06-12 江苏中煜橡塑科技有限公司 Insulating fluororubber material for sealing lithium battery and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115584141A (en) * 2022-10-27 2023-01-10 四川道弘新材料有限公司 Lithium battery electrolyte-resistant bisphenol high-fluorine fluororubber compound and preparation method thereof
CN115584141B (en) * 2022-10-27 2023-07-18 四川道弘新材料有限公司 Bisphenol high-fluorine rubber compound for lithium-resistant battery electrolyte and preparation method thereof
CN115926344A (en) * 2022-12-31 2023-04-07 氟乐泰科（厦门）新材料有限公司 Modified fluororubber compound and preparation method thereof
CN115926344B (en) * 2022-12-31 2024-04-19 氟乐泰科（厦门）新材料有限公司 Modified fluororubber compound and preparation method thereof

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