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Polydimethylsiloxane film and its preparation method and friction generator using it

A technology of polydimethylsiloxane film and dimethylsiloxane, applied in triboelectric generators, coatings, etc., can solve the problems of high material price, template deformation, and complicated preparation process, and achieve low price, Cost saving, easy preparation effect

Active Publication Date: 2017-04-19
NEWNAGY TANGSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Polydimethylsiloxane membranes have been used in various fields, especially in the preparation of triboelectric generators, but the preparation process of polydimethylsiloxane membranes is complicated, and most of the current membrane separation methods are limited to Mechanical peeling, which is very easy to damage the polydimethylsiloxane film, not suitable for mass production
However, the price of the materials required for the polydimethylsiloxane film with micro-nano structure prepared by the existing sacrificial layer template method is generally high, and the strength and toughness of the sacrificial layer template made are not ideal, so that the The template is deformed during the curing process of polydimethylsiloxane, which affects the film-forming effect, which further affects the application of polydimethylsiloxane film in triboelectric generators, and is also not conducive to the preparation and industrialization of triboelectric generators. Production

Method used

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  • Polydimethylsiloxane film and its preparation method and friction generator using it
  • Polydimethylsiloxane film and its preparation method and friction generator using it
  • Polydimethylsiloxane film and its preparation method and friction generator using it

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preparation example Construction

[0040] First, combine figure 1 The preparation method of polydimethylsiloxane membrane of the present invention is described in detail, and this method comprises:

[0041] (1) Add polyvinyl alcohol into distilled water, then stir at 90-98°C for 30-35 minutes to dissolve, and after dissolving, let it stand at room temperature to obtain a polyvinyl alcohol solution. For example, in a preferred embodiment, polyvinyl alcohol is added into distilled water, then placed in a 95° C. water bath, stirred for 30 minutes to dissolve, and after dissolution, it is left to stand at room temperature to obtain a polyvinyl alcohol solution.

[0042] (2) Add starch into distilled water, and stir and gelatinize at 78-85°C for 30-35min to obtain a starch gelatinization product.

[0043] (3) Add the polyvinyl alcohol solution obtained in step (1) to the starch gelatinized product obtained in step (2), and add a cross-linking agent solution (such as an aqueous cross-linking agent solution) at the s...

Embodiment 1

[0076] The size of the triboelectric generator is 3cm×3cm, and the total thickness is about 500μm. The triboelectric generator 1 includes a first electrode layer 11 , a first polymer insulation layer 12 , and a second electrode layer 13 which are stacked in sequence. The first polymer insulating layer 12 is a polydimethylsiloxane film. The preparation method of the friction generator will be described in detail below.

[0077] 1. Preparation of Polydimethylsiloxane Membrane

[0078] Add 10.5g of polyvinyl alcohol into 100ml of distilled water, then place it in a water bath at 90°C, stir for 30 minutes to dissolve, take it out after dissolving, and let it stand at room temperature to obtain a polyvinyl alcohol solution; add 4g of starch to 50ml of distilled water In a water bath at 78°C, stir and gelatinize for 30 minutes to obtain a starch gelatinization product; add polyvinyl alcohol solution to the starch gelatinization product, add 0.45g glyoxal dissolved in 10ml distille...

Embodiment 2

[0085] The size of the triboelectric generator is 3cm×3cm, and the total thickness is about 500μm. The triboelectric generator 1 includes a first electrode layer 11 , a first polymer insulation layer 12 , and a second electrode layer 13 which are stacked. The first polymer insulating layer 12 is a polydimethylsiloxane film. The preparation method of the friction generator will be described in detail below.

[0086] 1. Preparation of Polydimethylsiloxane Membrane

[0087] Add 12.5g of polyvinyl alcohol to 100ml of distilled water, then place it in a water bath at 95°C, stir for 33 minutes to dissolve, take it out after dissolving, and let it stand at room temperature to obtain a polyvinyl alcohol solution; add 7.5g of starch to 50ml In distilled water, stir and gelatinize in a water bath at 80°C for 32 minutes to obtain a starch gelatinization product; add polyvinyl alcohol solution to the starch gelatinization product, and add 0.5g glutaraldehyde dissolved in 10ml of distill...

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Abstract

The invention provides a preparation method of a polydimethylsiloxane film, comprising: adding polyvinyl alcohol into distilled water, then stirring at 90-98°C for 30-35min to dissolve, and then dissolving it at room temperature Stand still to obtain a polyvinyl alcohol solution; add the starch to distilled water, stir and gelatinize at 78-85°C for 30-35min to obtain a starch gelatinization product; add the polyvinyl alcohol solution to the starch gelatinization product, and simultaneously Add the cross-linking agent solution, stir and let it stand; lay a film on the silicon template, dry it at 75-85°C to form a film and cross-link to obtain a water-soluble sacrificial layer template, and then separate the water-soluble sacrificial layer template from the silicon template; The polydimethylsiloxane slurry is coated on the water-soluble sacrificial layer template, vacuumized, solidified and formed, and the polydimethylsiloxane film is separated in water. The invention also provides a triboelectric generator made of the polydimethylsiloxane film prepared by the method. The method for preparing the polydimethylsiloxane film of the present invention has low cost, simple and convenient operation, and can realize batch production.

Description

technical field [0001] The invention relates to the field of polymer films, in particular to a polydimethylsiloxane film used for a triboelectric generator and a preparation method thereof. Background technique [0002] Polydimethylsiloxane membranes have been used in various fields, especially in the preparation of triboelectric generators, but the preparation process of polydimethylsiloxane membranes is complicated, and most of the current membrane separation methods are limited to Mechanical peeling, which is very easy to damage the polydimethylsiloxane film, is not suitable for mass production. However, the price of the materials required for the polydimethylsiloxane film with micro-nano structure prepared by the existing sacrificial layer template method is generally high, and the strength and toughness of the sacrificial layer template made are not ideal, so that the The template is deformed during the curing process of polydimethylsiloxane, which affects the film-for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/10B29C41/38H02N1/04C08L83/04C08L29/04C08L3/02
CPCB29C41/10B29C41/38C08L3/02C08L29/04C08L83/04H02N1/04
Inventor 丁超孙利佳王竹赵豪
Owner NEWNAGY TANGSHAN