Hollow organosilane microsphere with rough surface structure and preparation method thereof

An organosilane and rough surface technology, applied in the field of organosilane microspheres and their preparation, can solve problems such as sphere damage and uneven particle size, and achieve the effect of solving difficult control and solving process steps.

Active Publication Date: 2011-08-03
ETERNAL SPECIALTY MATERIALS ZHUHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the inventors of the present application have found after extensive research and repeated experiments that a kind of organic silane microspheres with wrinkles on the surface and hollow inside have high particle size uniformity, and the synthesis method is simple and easy, which can solve the problem of traditional Problems of uneven particle size and damage to a large number of spheres caused by the preparation method of hollow microspheres

Method used

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  • Hollow organosilane microsphere with rough surface structure and preparation method thereof
  • Hollow organosilane microsphere with rough surface structure and preparation method thereof
  • Hollow organosilane microsphere with rough surface structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Disperse 0.01 gram of 25% ammonia water into 10 gram of pure water to form a homogeneous solution, mix vinyltrimethoxysilane and ethyl orthosilicate with a mass ratio of 4:1, stir at 200 rpm for 30 minutes, then mix 1.5 gram of the above-mentioned organic The silane mixture was slowly added dropwise to the pre-mixed ammonia solution, heated to 70°C, reacted at 200rpm for 8h, and then aged at 70°C for 15h; finally centrifuged, washed repeatedly with pure water, freeze-dried, and the resulting particles averaged The particle size is 0.87 μm, the particle size distribution is 0.7 μm-1.2 μm, and the yield is 37%.

Embodiment 2

[0045] Disperse 0.5 g of 25% ammonia water into 10 g of pure water to form a uniform solution, mix phenyltrimethoxysilane and ethyl orthosilicate with a mass ratio of 4:1, stir at 200 rpm for 30 min, then mix 1.6 g of the above organic The silane mixture was slowly added dropwise to the pre-mixed ammonia solution, placed in the ice-water mixture, reacted at 200 rpm for 8 hours, and then aged in the ice-water mixture at 0°C for 15 hours; finally centrifuged, washed repeatedly with pure water, After freeze-drying, the average particle size of the generated particles is 2.48 μm, the particle size is mainly distributed in the range of 2.2 μm-2.6 μm, and the yield is 41%.

Embodiment 3

[0047] Disperse 0.5 g of 25% ammonia water into 10 g of pure water to form a homogeneous solution, mix methyltrimethoxysilane and ethyl orthosilicate at a mass ratio of 4:1, stir at 200 rpm for 30 min, then mix 1.2 g of the above organic The silane mixture was slowly added dropwise to the pre-mixed ammonia solution, placed in a room temperature of 20°C, reacted at 200 rpm for 2 hours, and then aged at room temperature for 15 hours; finally centrifuged, washed repeatedly with pure water, and freeze-dried to produce The average particle size of the particles is 1.5 μm, the particle size is mainly distributed in the range of 1.3 μm-1.7 μm, and the yield is 46%.

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Abstract

The invention provides a hollow organosilane microsphere with a rough surface structure and a preparation method thereof. The hollow organosilane microsphere with the rough surface structure is characterized by being prepared by the following steps of: providing an alkaline solution with the pH value of between 10 and 13; mixing at least two types of organosilane to obtain an organosilane mixture; adding the organosilane mixture into the alkaline solution; undergoing a hydrolytic polycondensation reaction; and standing and ageing. Organosilane microsphere particles are provided with folds on the surface and are hollow inside, and the particle sizes of the particles have high uniformity. The method provided by the invention is simple and feasible. By adopting the method, the problems of non-uniform particle size and breakage of a large number of sphere bodies caused by the conventional hollow microsphere preparation method can be solved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an organosilane microsphere with a hollow rough surface structure and a preparation method thereof. Background technique [0002] Organosilanes are a type of organic-inorganic hybrid structure at the molecular level, in which silicon atoms constitute the "skeleton" of inorganic silicon oxygen, and silicon atoms can introduce various organic functional groups through side groups to form organic structural parts. This structure makes it have both the excellent properties of inorganic materials and organic materials. Its inorganic core can inhibit the chain movement of polymer molecules and endow hybrid materials with good heat resistance. Organic substituents and polymer chains endow hybrid materials with good heat resistance. toughness and workability. Organosilanes also have good optical properties, heat resistance, weather resistance, hygroscopicity, elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08G77/06B01J13/14
Inventor 周青竹卜诗尧徐坚周浪
Owner ETERNAL SPECIALTY MATERIALS ZHUHAI CO LTD
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