A spider silk-like polymer fiber based on silica porous microspheres and its preparation method

A technology of porous microspheres and silica, applied in the field of chemical bionics, can solve the problems of low cost, weak interaction between additives and fiber matrix, etc., and achieve the effects of low cost, weakened influence and good stability

Active Publication Date: 2020-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the method of the present application, by adding porous silica microspheres during the spinning process, the spindle structure can be obtained during the fiber preparation process, and the microfiber network can be formed inside the porous structure during the fiber formation process, to a certain extent Solve the problem of weak interaction between the additive and the fiber matrix, and reduce the influence of the additive on the mechanical properties of the fiber. This method does not require major changes to the existing spinning process, and the equipment does not need to be changed. From a technical point of view, it is simpler , the cost is also lower

Method used

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  • A spider silk-like polymer fiber based on silica porous microspheres and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Disperse 7 grams of polyvinyl alcohol (PVA 1799, Aladdin, polymerization degree of 1700, alcoholysis degree of 99%), 1.05 grams of porous silica microspheres in 43 grams of 1,4-dioxane (DMSO) In the medium, heating and stirring at 80 degrees Celsius for 2 hours to obtain a uniform spinning dope. At room temperature, the above-mentioned spinning stock solution is extruded into methanol through a peristaltic pump for spinning: the actual extrusion rate is 0.02 ml per minute, the spinneret model is 25G (diameter is 260 microns), and the take-up rate is 0.1 meter per minute. Minutes, the fiber is in the coagulation bath for at least 5 minutes; after sufficient drying and collection, the nascent fiber is obtained; it is thermally stretched at 180 degrees Celsius to 8 times the original length to obtain the spider silk fiber, and the test is performed. figure 1 . The diameter of the main body of the obtained fiber is 27 microns, the radial height of the spindle nodes is 40-70...

Embodiment 2

[0061] 7 grams of polyvinyl alcohol (PVA 1799, Aladdin, degree of polymerization is 1700, degree of alcoholysis is 99%), 2.1 grams of porous silica microspheres (same as Example 1), dispersed in 43 grams of 1,4-bis In oxane (DMSO), heat and stir at 80 degrees Celsius for 2 hours to obtain a uniform spinning dope. At room temperature, the above-mentioned spinning stock solution is extruded into methanol through a peristaltic pump for spinning: the actual extrusion rate is 0.02 ml per minute, the spinneret model is 25G (diameter is 260 microns), and the take-up rate is 0.1 meter per minute. Minutes, the fiber stays in the coagulation bath for at least 5 minutes; after fully drying and collecting, the nascent fiber is obtained; and it is thermally stretched at 180 degrees Celsius to 8 times the original length to obtain the spider silk fiber. The main body diameter of the obtained fiber is 27 microns, the radial height of the spindle nodes is 40-75 microns, the axial length is 50-...

Embodiment 3

[0064] 6 grams of polyvinyl alcohol (PVA 2499, Aladdin, degree of polymerization is 2400, degree of alcoholysis is 99%), 0.9 grams of porous silica microspheres (same as Example 1), dispersed in 44 grams of 1,4-bis In oxyhexane (DMSO), heat and stir at 80 degrees Celsius for 3 hours to obtain a uniform spinning dope. At room temperature, the above-mentioned spinning stock solution is extruded into methanol through a peristaltic pump for spinning: the actual extrusion rate is 0.02 ml per minute, the spinneret model is 25G (diameter is 260 microns), and the take-up rate is 0.1 meter per minute. Minutes, the fiber is in the coagulation bath for at least 5 minutes; after fully drying and collecting, the nascent fiber is obtained; and it is thermally stretched at 180 degrees Celsius to 6 times the original length to obtain the spider silk fiber. The main body diameter of the obtained fiber is 25 microns, the radial height of the spindle nodes is 35-80 microns, the axial length is 50...

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Abstract

The invention relates to a spider silk-like polymer fiber based on silica porous microspheres and a preparation method thereof in the technical field of chemobionics. The spider silk-like polymer fiber comprises the following components by weight: 100 parts of a fiber matrix polymer and 1-45 parts of silica porous microspheres. The monofilament of the polymer fiber has a spider silk-like microstructure with spindle knot structural units in interval distribution, and the spindle knot structural units have a radial height of 10-300 microns, an axial length of 10-1000 microns, and an interval of10-5000 microns. The method provided by the invention has no need for substantial change of the existing spinning technology and has no need for change of equipment, the process is simple, and the cost is low. The spider silk-like polymer fiber obtained by the invention can realize directional movement of water droplets on the fiber surface, has water gathering function, and also has good mechanical properties.

Description

Technical field [0001] The present invention relates to the technical field of chemical bionics, and furthermore, to a spider silk polymer fiber based on porous silica microspheres and a preparation method thereof. Background technique [0002] Water resources are important natural resources for the development of human society. Although the amount of water on the earth is huge, the amount of water that can be directly used by people for production and life is pitifully small, accounting for only 0.26% of the total amount of water on the earth. The sustainable use of water resources is the most important issue in the sustainable development and utilization of all natural resources. In today's society, the shortage of fresh water resources is gradually emerging. About 1.5 billion people in more than 80 countries around the world are facing a shortage of fresh water, among which 300 million people in 26 countries are living in a state of water shortage. It is estimated that by 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/50D01F6/38D01F6/94D01F1/10D01D5/06D01D5/20
CPCD01D5/06D01D5/20D01F1/10D01F6/38D01F6/50D01F6/94
Inventor 乔金樑姜超戚桂村张晓红宋志海赖金梅蔡传伦李秉海王湘蒋海斌张江茹茹越高建明张红彬韩朋
Owner CHINA PETROLEUM & CHEM CORP
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