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Solid-liquid filled low-surface-energy smooth functional material and preparation method thereof

A low surface energy, functional material technology, applied in the direction of fireproof coatings, additive processing, paints containing biocide, etc., can solve the problems of uncontrollable lubricant content, poor mechanical properties of materials, and can not be used as coatings, etc., to achieve the preparation method Simple and easy to control, improve mechanical properties, and improve processing performance

Pending Publication Date: 2020-10-27
SUZHOU TIANLAN BIOMATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although super-slip polymer materials exhibit excellent interfacial properties, they have the following problems: (1) Poor mechanical properties; the mechanical properties of polymer materials will be greatly reduced after injection of liquid lubricants
Lubricant molecules tend to have relatively large molecular weight and take a long time to swell; after swelling, the material is prone to deformation or falls off from the substrate
Although polymer gels can also be prepared by in-situ polymerization, the mechanical properties of the materials obtained by this method are very poor and cannot be used as coatings
(3) The lubricant content is uncontrollable; the durability of the super-slip performance of the super-slip material directly depends on the lubricant content
(4) Polymer materials are flammable
Adding lubricant molecules to polymer composites is a common approach, however, in the prior art, lubricants are added in very small amounts (0.2-1%) and are added as processing aids rather than functional ingredients It does not serve the purpose of modifying the surface properties of materials

Method used

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  • Solid-liquid filled low-surface-energy smooth functional material and preparation method thereof
  • Solid-liquid filled low-surface-energy smooth functional material and preparation method thereof
  • Solid-liquid filled low-surface-energy smooth functional material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of base material that end-capping of large end group, its preparation method comprises the following steps:

[0049] Dissolve 2g of dimethylhydrogen-terminated dimethylsiloxane and 2g of monovinyl-terminated polysiloxane with a molecular weight of 2000 in toluene and stir. After mixing evenly, add a certain amount of Pt catalyst. Reaction 1d, and then carry out vacuum distillation and vacuum drying to remove the toluene solution to obtain vinyl-terminated polysiloxane. Mix the obtained vinyl-terminated polysiloxane with the fluorinated oligomeric silsesquioxane according to a molar ratio of 2:1 by mass, configure it into a 20wt% tetrahydrofuran solution, and then add a certain amount of Pt catalyst to mix and stir After 1 hour, the mixed solution was added dropwise into a polytetrafluoroethylene mold, and the organic reagent was removed to obtain a branched silicone substrate.

[0050] The branched silicone substrate prepared in this example has good transparenc...

Embodiment 2

[0052] A kind of supramolecular substrate containing dynamic bond, its preparation method comprises the following steps:

[0053] Dissolve the silicone containing diamino active group-terminated in an organic solvent and configure it into a linear silicone solution of 0.1-0.2mol / ml, and dissolve the diisocyanate active small molecules in an organic solvent and configure it into a 0.4-0.6mol / ml ml active small molecule solution, and then mixed according to the volume ratio of 10:2-4, then stirred at room temperature for 20-28h, and copolymerized to obtain a silicone solution. Add the organosilicon solution dropwise to the inorganic substrate, and volatilize in the air at room temperature for 4-6 days, because the supramolecular polymer network coating crosslinked by hydrogen bonds (linear organosilicon containing dynamic hydrogen bonds) is prepared by solvent volatilization , the gelation process of the polymer network cross-linked by hydrogen bonds is similar to the general fr...

Embodiment 3

[0056] A kind of porous base material preparation with water as porogen, its preparation method comprises the following steps:

[0057] Mix the two-component PDMS (Shenzhen Hongyejie E-6205) uniformly according to the mass ratio of 10:1 to obtain the organosilicon precursor, mix and stir 5g of the organosilicon precursor and 3g of water for 10min, add to the above emulsion After the Pt catalyst is mixed evenly, the obtained emulsion is poured on the substrate and pre-cured at room temperature for 30 minutes to obtain an opaque film material. The film material is placed at room temperature for 7 days, and the film changes from white opaque to transparent, and a transparent reversible Dynamic cellular elastomeric polymer materials.

[0058] The porosity of the porous elastomer base material obtained in this example is 83%, and the pore diameter range is 200-600 nm.

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Abstract

The invention provides a solid-liquid filled low-surface-energy smooth functional material and a preparation method thereof. The solid-liquid filled low-surface-energy smooth functional material comprises the following raw materials by weight: 30-90% of a base material, 5-90% of a liquid filler and 0-60% of a solid filler; the liquid filler secretes to the surface of the material to form a lubricating layer, and the thickness of the lubricating layer is 20-1000nm. The invention further provides a preparation method of the solid-liquid filled low-surface-energy smooth functional material. The preparation method is simple and easy to control, the low-surface-energy smooth functional material can be rapidly prepared, the obtained material has a three-layer structure, the mechanical property is improved, the material processability is improved, the material is functionalized, and the characteristics of low surface energy and smoothness are achieved.

Description

technical field [0001] The invention belongs to the technical field of smooth functional materials, in particular to a solid-liquid filled low surface energy smooth functional material and a preparation method thereof. Background technique [0002] Polymer composites are a class of materials that are based on polymers and added with other substances to enhance specific properties. Depending on the type of additive, the performance enhancement effect of the material is different. Early polymer composite materials mainly enhanced the mechanical properties of materials through additives. For example, adding flake fillers with low aspect ratios such as single crystals / whiskers, clay, talc, and mica can improve the stiffness of materials; Adding fillers with high aspect ratios such as fiber, glass fiber, graphite, boron, etc. can improve both tensile strength and stiffness. These materials with excellent mechanical properties are widely used in construction, chemistry, transpor...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/12C08L79/04C08K7/26C08K7/14C08K3/22C08K3/04C08J9/26C08J5/18C08J9/42C08J7/00C09D183/04C09D5/16C09D7/61C09D5/18B33Y70/10C08K9/00C08L67/04C08L91/00C08L71/00
CPCC08J9/26C08J9/0085C08J9/0061C08J9/0066C08J9/0071C08J5/18C08J9/42C08J7/00C09D183/04C09D5/1675C09D7/61C09D5/18B33Y70/10C08L83/04C08L67/04C08L71/00C08K2003/2227C08J2383/04C08J2483/04C08J2491/06C08J2201/0462C08J2201/0422C08K7/26C08K7/14C08K3/04C08K3/041C08K2201/001C08J2483/12C08J2479/04C08L2205/025C08K3/22C08K9/00C08L91/00
Inventor 崔家喜杨莉吴倩王宏
Owner SUZHOU TIANLAN BIOMATERIAL TECH CO LTD
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