A kind of submicron composite ball and its preparation method and its application as silicone rubber porcelain filler

A composite ball and sub-micron technology, which is applied in the treatment of fibrous fillers and dyed organic silicon compounds, can solve the problem of affecting the molding process and comprehensive performance of silicone rubber/filler composite materials, the large amount of inorganic filler added, and the consumption of modifiers. Large and other problems, to achieve the effect of being convenient for mass production, easy to form and process, and good self-supporting

Active Publication Date: 2018-10-02
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, these inorganic fillers are added in a large amount and have poor compatibility with the organic matrix, thus affecting the molding process and comprehensive performance of silicone rubber / filler composites
In practical applications, chemical methods (silane coupling agent modification, etc.) and physical methods are usually used to modify inorganic fillers to improve their compatibility with organic matrices, but these modification methods consume a lot of modifiers, and the operation Strict conditions and high equipment requirements, resulting in high product costs; the product post-processing process is often very complicated, and will cause organic solvent pollution

Method used

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  • A kind of submicron composite ball and its preparation method and its application as silicone rubber porcelain filler
  • A kind of submicron composite ball and its preparation method and its application as silicone rubber porcelain filler
  • A kind of submicron composite ball and its preparation method and its application as silicone rubber porcelain filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1 (preparation of solid submicron composite ball filler)

[0062] The raw materials are 3-methacryloyloxypropyltrimethoxysilane and lithium diatomaceous earth, and the initiator is potassium persulfate. Add 0.5mL of 3-methacryloyloxypropyltrimethoxysilane and 0.1g of lithium diatomaceous earth into 40mL of water, stir at 30°C for 6 hours, then raise the temperature to 70°C, add 10mg of potassium persulfate to initiate polymerization, and the polymerization reaction lasts for 12 hours. The resulting emulsion is centrifuged, washed with ethanol three times, dispersed in water, and freeze-dried to obtain a white powder solid filler.

[0063] The above powder was dispersed in ethanol to make a transmission electron microscope sample, and the filler morphology was observed. Such as figure 1 as shown in a.

[0064] Depend on figure 1 a It can be seen that the solid submicron composite spheres prepared in this example have a hydrophobic polymer part and a hydrop...

Embodiment 2

[0065] Embodiment 2 (preparation of hollow submicron composite ball filler)

[0066] The raw materials are 3-methacryloyloxypropyltrimethoxysilane, lithium diatomaceous earth and isopropyl acetate, and the initiator is potassium persulfate. Add 1mL of 3-methacryloyloxypropyltrimethoxysilane, 0.3g of lithium diatomaceous earth, and 1mL of isopropyl acetate into 60mL of water, stir at 10°C for 28 hours, then raise the temperature to 70°C, add 20mg of potassium persulfate to initiate polymerization, and polymerize The reaction lasted 18 hours. The resulting emulsion was centrifuged, washed with ethanol three times, dispersed in water, and freeze-dried to obtain a white powder solid filler.

[0067] The above powder was dispersed in ethanol to make a transmission electron microscope sample, and the filler morphology was observed. Such as figure 1 as shown in b.

[0068] Depend on figure 1 b It can be seen that the hollow submicron composite spheres prepared in this example ha...

Embodiment 3

[0069] Embodiment 3 (preparation of solid submicron composite ball filler)

[0070] The raw materials are 3-methacryloyloxypropyltrimethoxysilane and lithium diatomaceous earth, and the initiator is azobisisobutylamidine. Add 1mL of 3-methacryloyloxypropyltrimethoxysilane and 0.3g of lithium diatomaceous earth into 150mL of water, stir at 20°C for 24 hours, then raise the temperature to 65°C, add 15mg of azobisisobutylamidine to initiate polymerization, and the polymerization reaction continues 18 hours. The resulting emulsion is centrifuged, washed with ethanol three times, dispersed in water, and freeze-dried to obtain a white powder solid filler.

[0071] The solid submicron composite sphere prepared in this embodiment has a hydrophobic polymer part and a hydrophilic lethionite sheet, and the lethionite sheet is coated on the surface of the polymer to form an armor structure, which is an organic-inorganic composite structure. The particle size of the submicron composite b...

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Abstract

The invention discloses a submicron composite sphere and a preparation method thereof, and an application of the submicron composite sphere as a silicone rubber ceramic-forming filling material. The filling material is of an inorganic nanosheet-polymer composite structure, and comprises a hydrophobic silicon-containing polymer part and a hydrophilic inorganic nanosheet part; and the inorganic nanosheet coats the surface of the polymer part to form an armor structure. The preparation method for the filling material has the advantages of simple process, good product repeatability, good process controllability and facilitation to large-scale production. The composite sphere is used as the ceramic-forming filling material of silicone rubber, and on the basis of guaranteeing high strength and original shape of a ceramic product, the filling material has low ceramization temperature and can match with the decomposition temperature of silicone rubber; the ceramic product has good self-support properties; excellent dispersibility and compatibility in a silicone rubber matrix can be achieved without the need of further modification; and the silicone rubber containing the filling material facilitates to molding processing.

Description

technical field [0001] The invention relates to a submicron composite ball and its preparation method and application, more specifically to a submicron inorganic nanosheet-polymer composite ball, its preparation method and its application as a silicone rubber porcelain filler. Background technique [0002] In recent years, fires in chemical industry, coal mines, and large-scale entertainment venues have occurred frequently, causing great losses to people's lives and property, and making people have a deeper understanding of fire protection and fire safety. How to ensure the unimpeded power and communication within a certain period of time in the event of a fire, so as to win the precious time to the maximum extent and reduce the loss of personnel and property is a problem that needs people's serious consideration and continuous exploration. Fire-resistant cables can ensure the normal operation of the line in the event of a fire, which is of great help to rescue work and can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C09C1/28C09C1/42C09C3/12C08L83/07C08L83/06C08L83/08C08K9/06C08K3/34C08K3/22
Inventor 邱东张新萍李爱玲谢玥赵云峰张志杰
Owner INST OF CHEM CHINESE ACAD OF SCI
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