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Shanghai Sijun Machinery Equipment Co., Ltd
Fluorine rubber magnesium oxide grinding and dispersing machine
NegotiableUpdate on 05/06
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Overview
The rotor speed of the fluororubber magnesium oxide grinding and dispersing machine can reach 44m/s. Within this speed range, turbulence caused by shear forces combined with specially developed motors can reduce the particle size range to the nanometer level. The shear force is stronger, and the particle size distribution of lotion is narrower.
Product Details
Fluorine rubber magnesium oxide grinding and dispersing machine
Fluororubber is a synthetic polymer rubber containing fluorine atoms on the main or side chain carbon atoms. It has the characteristics of high temperature resistance, oil resistance, high temperature resistance, aging resistance, and corrosion resistance to various chemicals, and has good physical and mechanical properties. It is widely used in aerospace, automotive, petrochemical and other fields.
Although fluororubber has many excellent properties, it also has the problem of poor compression deformation performance. To solve this problem, the main approach is to add sulfurized crosslinking agents. However, during the vulcanization process of fluororubber, the vulcanizing agent and the raw rubber undergo cross-linking reactions, forming a large amount of small molecular weight acid hydrogen fluoride. If hydrogen fluoride is not absorbed, it will affect the degree of crosslinking, reduce the vulcanization rate, and cause corrosion and pollution to the metal. Therefore, acid absorbing agents need to be used in combination.
The preparation method of fluororubber magnesium oxide includes the following steps:
a、 Mix the required quality surface treatment agent with active magnesium oxide and pour it into a high-speed mixer to stir and mix for 20 minutes. Under high-speed stirring, magnesium containing fatty acid salts melt and uniformly adhere to the surface of active magnesium oxide;
b、 Dissolve sulfur-containing or mercapto silane coupling agents in anhydrous ethanol in a mass ratio of 1:3-1:10 between surface coating dispersant and anhydrous ethanol; c、 Start the high-speed mixer and evenly spray the ethanol solution containing silane coupling agent prepared in step b onto the magnesium oxide solid powder in a high-speed stirring and mixing state. Continue stirring and mixing for 15 minutes to obtain fluororubber magnesium oxide.
(1) Magnesium containing fatty acids play a bridging role, and the magnesium end in the molecule has the same properties as magnesium oxide, which is conducive to forming a coating layer on the surface of magnesium oxide particles with magnesium ion end inward and fatty acid organic end outward, making it easy for organic silane coupling agents to coat it. Compared to directly coating magnesium oxide particles with silane coupling agents, this method provides more uniform and efficient coating; (2) The coated active magnesium oxide particles have an additional protective layer between them and the outside world, reducing their contact with moisture and CO2 in the air. As a result, the product's activity retention period is extended, and its storage shelf life is prolonged; (3) Due to the good compatibility between silane coupling agent and fluororubber, this product can be easily dispersed in the fluororubber compound during the mixing process, fully exerting its acid absorption effect and effectiveness; (4) The sulfur-containing and thiol containing silane coupling agents used contain sulfur, which has a substitute and homogenizing effect on the vulcanization process of fluororubber, making the vulcanization and polymerization process of fluororubber uniform and sufficient, thus helping to improve the tensile strength of fluororubber.
The first level consists of three-level sawtooth protrusions and grooves with increasing precision. The stator can be infinitely adjusted to the desired distance between the rotors. Under enhanced fluid turbulence. The groove can change direction at each level.
The second stage is composed of a stator. The design of the dispersing head also effectively meets the needs of substances with different viscosities and particle sizes. The difference in the design of the stator and rotor (emulsifying head) between online and batch machines is mainly due to the requirements for conveying performance. It is particularly important to note that the difference between coarse precision, medium precision, fine precision, and other types of working heads is not only the arrangement of rotor teeth, but also an important difference in the geometric characteristics of different working heads. The width of the slot and other geometric features can alter the different functions of the stator and rotor working heads.
The following is a model table for reference:
Fluororubber is a synthetic polymer rubber containing fluorine atoms on the main or side chain carbon atoms. It has the characteristics of high temperature resistance, oil resistance, high temperature resistance, aging resistance, and corrosion resistance to various chemicals, and has good physical and mechanical properties. It is widely used in aerospace, automotive, petrochemical and other fields.
Although fluororubber has many excellent properties, it also has the problem of poor compression deformation performance. To solve this problem, the main approach is to add sulfurized crosslinking agents. However, during the vulcanization process of fluororubber, the vulcanizing agent and the raw rubber undergo cross-linking reactions, forming a large amount of small molecular weight acid hydrogen fluoride. If hydrogen fluoride is not absorbed, it will affect the degree of crosslinking, reduce the vulcanization rate, and cause corrosion and pollution to the metal. Therefore, acid absorbing agents need to be used in combination.
The preparation method of fluororubber magnesium oxide includes the following steps:
a、 Mix the required quality surface treatment agent with active magnesium oxide and pour it into a high-speed mixer to stir and mix for 20 minutes. Under high-speed stirring, magnesium containing fatty acid salts melt and uniformly adhere to the surface of active magnesium oxide;
b、 Dissolve sulfur-containing or mercapto silane coupling agents in anhydrous ethanol in a mass ratio of 1:3-1:10 between surface coating dispersant and anhydrous ethanol; c、 Start the high-speed mixer and evenly spray the ethanol solution containing silane coupling agent prepared in step b onto the magnesium oxide solid powder in a high-speed stirring and mixing state. Continue stirring and mixing for 15 minutes to obtain fluororubber magnesium oxide.
(1) Magnesium containing fatty acids play a bridging role, and the magnesium end in the molecule has the same properties as magnesium oxide, which is conducive to forming a coating layer on the surface of magnesium oxide particles with magnesium ion end inward and fatty acid organic end outward, making it easy for organic silane coupling agents to coat it. Compared to directly coating magnesium oxide particles with silane coupling agents, this method provides more uniform and efficient coating; (2) The coated active magnesium oxide particles have an additional protective layer between them and the outside world, reducing their contact with moisture and CO2 in the air. As a result, the product's activity retention period is extended, and its storage shelf life is prolonged; (3) Due to the good compatibility between silane coupling agent and fluororubber, this product can be easily dispersed in the fluororubber compound during the mixing process, fully exerting its acid absorption effect and effectiveness; (4) The sulfur-containing and thiol containing silane coupling agents used contain sulfur, which has a substitute and homogenizing effect on the vulcanization process of fluororubber, making the vulcanization and polymerization process of fluororubber uniform and sufficient, thus helping to improve the tensile strength of fluororubber.
The first level consists of three-level sawtooth protrusions and grooves with increasing precision. The stator can be infinitely adjusted to the desired distance between the rotors. Under enhanced fluid turbulence. The groove can change direction at each level.
The second stage is composed of a stator. The design of the dispersing head also effectively meets the needs of substances with different viscosities and particle sizes. The difference in the design of the stator and rotor (emulsifying head) between online and batch machines is mainly due to the requirements for conveying performance. It is particularly important to note that the difference between coarse precision, medium precision, fine precision, and other types of working heads is not only the arrangement of rotor teeth, but also an important difference in the geometric characteristics of different working heads. The width of the slot and other geometric features can alter the different functions of the stator and rotor working heads.
The following is a model table for reference:
| model | standard flow | output speed | Standard linear velocity | Motor power | Imported size | Outlet size |
| L/H | rpm | m/s | KW | |||
| GMD2000/4 | 400 | 18000 | 44 | 4 | DN25 | DN15 |
| GMD2000/5 | 1500 | 10500 | 44 | 11 | DN40 | DN32 |
| GMD2000/10 | 4000 | 7200 | 44 | 22 | DN80 | DN65 |
| GMD2000/20 | 10000 | 4900 | 44 | 45 | DN80 | DN65 |
| GMD2000/30 | 20000 | 2850 | 44 | 90 | DN150 | DN125 |
| GMD2000/50 | 60000 | 1100 | 44 | 160 | DN200 | DN150 |
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