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Preparation method of real-time vulcanized elastomer fiber membrane

A technology for vulcanizing elastomers and elastomer fibers, which is applied in the field of real-time vulcanization of elastomer fiber membranes. It can solve the problems of discontinuous conduction, metal particles are easy to fall off, and poor durability, so as to reduce stuffy discomfort and good cycle stability. and durability, high sensitivity effect

Pending Publication Date: 2022-05-27
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, Chinese patent 202011144017.6 discloses a method for preparing a flexible elastomeric fiber membrane with a curled structure: soaking the flexible elastomeric fiber membrane in an alcohol substance with low surface tension for 10 to 60 minutes; wherein, the The flexible elastomer fiber film is prepared by the following method: dissolving the flexible elastomer pellets in the corresponding solvent, stirring to obtain a uniform flexible elastomer solution; then spinning by an electrospinning machine with a high-speed roller; wherein , the rotating speed of the roller is 1000~3000rpm; the alcohols with low surface tension are selected from at least one of ethanol, methanol, propanol or dibutanol; the conductivity of the flexible elastic fiber film prepared by the metal is It is realized by depositing and constructing a conductive layer, but there are problems that the metal particles are easy to fall off, the conductivity is discontinuous when stretched, and the durability is poor.

Method used

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  • Preparation method of real-time vulcanized elastomer fiber membrane
  • Preparation method of real-time vulcanized elastomer fiber membrane
  • Preparation method of real-time vulcanized elastomer fiber membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The specific process of the preparation method of the real-time vulcanized elastomer fiber film involved in the present embodiment is:

[0033] (1) Preparation of elastomer spinning solution: Dissolve trans-1,4-polyisoprene (TPI) in tetrahydrofuran, add functional fillers, heat in a water bath at a temperature of 60°C, stir magnetically for 4h, A uniformly dispersed elastomer spinning solution with a mass percentage concentration of 2% is prepared, and is used for later use;

[0034] (2) Preparation of elastomer fibers: The elastomer spinning solution is kept at a constant temperature, and through the action of an electric field, through electrospinning technology, referring to electrospinning molding equipment, a flask, a high-voltage power supply, a high-speed receiving roller, a peristaltic pump, The glove box, infrared heating lamps and spinning nozzles are used for spinning, and the jet is evaporated to obtain solid elastomer fibers. The nozzle needle is 20G, the ...

Embodiment 2

[0038]The process of the preparation method of the real-time vulcanized elastomer fiber film involved in this embodiment is as follows: fully dissolving the white granular TPI and the vulcanization system in a mixed organic solvent composed of tetrahydrofuran and N,N-dimethylformamide, Turn on the infrared heating lamp in the glove box, control the ambient temperature, and use electric field spinning to obtain TPI elastomer fibers. The plasma nozzle is placed 10 cm from the non-collecting side of the high-speed collecting roller. While the high-speed collecting roller collects the TPI elastomer fibers, The plasma equipment processes the elastomer fibers in real time, and obtains a uniform plasma real-time vulcanized TPI elastomer fiber film.

Embodiment 3

[0040] The specific process of the preparation method of the real-time vulcanized elastomer fiber film involved in the present embodiment is:

[0041] Fully dissolve TPI-40 with a density of ≥ 0.940 produced by Qingdao Junxiang Technology Co., Ltd. in analytically pure tetrahydrofuran and dimethylformamide, and add functional fillers composed of insoluble sulfur, TMTD, CZ, RD and 4010 to prepare Elastomer spinning solution;

[0042] The elastomer spinning solution is kept at a constant temperature of 40 °C, and is spun under the action of an electric field, and the jet is evaporated to obtain solid elastomer fibers;

[0043] The elastomer fibers were collected, and the vulcanized elastomer fibers were treated with plasma equipment at the same time. The air pressure of the plasma real-time vulcanization gas source was 6 bar. After ventilation, the elastomer fibers were removed, rinsed with deionized water, and dried at room temperature to obtain an elastomer fiber film.

[004...

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Abstract

The invention belongs to the technical field of preparation of elastomer fiber membranes, and relates to a preparation method of a real-time vulcanized elastomer fiber membrane, which is characterized in that the elastomer fiber membrane is vulcanized in real time in an electrostatic spinning process, and a high polymer material with plasticity at normal temperature is processed into an elastomer with certain tensile strength. A solution electrostatic spinning method is used for preparing a micro-nano elastomer fiber membrane from a thermoplastic elastomer similar to rubber, real-time vulcanization of the elastomer fiber membrane in the spinning process is proposed for the first time, and the obtained uniform micro-nano-level fiber membrane is large in specific surface area, has certain porosity, is oleophylic and hydrophobic, is good in skin-friendly performance and is wide in application field; comprising drug sustained release, a flexible sensor, a breathable waterproof fabric, a smoke filter, a water-oil filter, a catalyst load and the like. The electrostatic spinning technology and the real-time vulcanization technology are combined, the performance of the fiber membrane is improved, the elastomer fiber membrane is crosslinked, the elongation at break and the tensile strength are improved, and a new thought is provided for a processing method of rubber and plastic.

Description

Technical field: [0001] The invention belongs to the technical field of elastomer fiber film preparation, relates to a preparation method of a real-time vulcanized elastomer fiber film, proposes new ideas for processing methods of rubber and plastics, and broadens the application fields of thermoplastic elastomers and rubber. Background technique: [0002] The flexible electronic skin is a new type of robotic skin that covers the robotic arm of the robot, allowing the robot to gain a "feel" and flexibly avoid various obstacles encountered in the forward movement. Flexible electronic skin has become a research hotspot in the field of robotics because of its good skin feel and the ability to detect the surrounding environment in real time. Flexible electronic skin must have high sensitivity, good stretchability, and long-term durability. Based on this, a polymer elastic fiber membrane with both breathability and flexibility has become the best choice for flexible electronic sk...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/4291D04H1/4358D04H1/4382C02F1/40B01D46/54B25J19/00
CPCD04H1/728D04H1/4291D04H1/4358D04H1/43825C02F1/40B01D46/543B25J19/00D10B2321/02D10B2331/10Y02A20/204
Inventor 边慧光薛俊秀朱东林聂万富郝英杰闫理智汪传生
Owner QINGDAO UNIV OF SCI & TECH
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