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Sulfonated PVDF-based IPMC electric actuator, preparation method thereof and application of sulfonated PVDF-based IPMC electric actuator in VR touch gloves

An electric actuator and sulfonation technology, applied in piezoelectric devices/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, instruments, etc. Low efficiency and other problems, to achieve the effect of high mechanical properties, low energy consumption, and low price

Active Publication Date: 2019-11-29
三体次元信息科技(宁波)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The driving of the ionomer metal compound is that the cations in the base material drive the water molecules to move to the cathode under the action of the electric field, so that the material bends to the anode and the loss of water It will affect the output force and displacement of IPMC artificial muscle materials, so the current application of IPMC artificial muscles is mainly in water or wet environments, and the working time of IPMC artificial muscles in dry environments is still quite short
[0005]The IPMC made of PVDF has the characteristics of low voltage, fast response and low price. It is widely used in various fields of science and technology, but it also has low porosity, Poor water absorption, short displacement distance, short displacement period, small mechanical properties, etc.

Method used

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  • Sulfonated PVDF-based IPMC electric actuator, preparation method thereof and application of sulfonated PVDF-based IPMC electric actuator in VR touch gloves
  • Sulfonated PVDF-based IPMC electric actuator, preparation method thereof and application of sulfonated PVDF-based IPMC electric actuator in VR touch gloves
  • Sulfonated PVDF-based IPMC electric actuator, preparation method thereof and application of sulfonated PVDF-based IPMC electric actuator in VR touch gloves

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 (preparation of sulfonated PVDF powder)

[0036] Preparation of sulfonic acid grafted PVDF powder: Weigh 3g of PVDF solid powder, soak in 0.07mol / L NaOH aqueous solution for 2h, and then soak in deionized water for 2h. Add 10mL of photoinitiator 2-hydroxyl-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone and sodium p-vinylbenzenesulfonate solution, and place it under a UV lamp Initiate and irradiate for 15h, 24h, 36h, 45h, 50h, 60h respectively to obtain sulfonated PVDF solid powder. Such as figure 2 Shown is the grafting mechanism diagram of sulfonated PVDF solid powder.

[0037] In order to judge the influence of UV irradiation time on the performance of IPMC, the IPMC prepared with different irradiation times was placed on the two poles of the power supply, the control voltage was 3V, the working frequency was 0.5Hz, and the length, width, and thickness were fixed at 30, 3, and 0.11, respectively. mm, use a high-speed camera (Olympus) and a laser d...

Embodiment 2

[0040] Embodiment 2 (electrospinning prepares sulfonated PVDF electrolyte membrane)

[0041] Preparation of sulfonic acid grafted PVDF composite basement membrane by electrospinning method:

[0042] (1) Preparation of sulfonated PVDF basement membrane solution: Weigh 1.2g sulfonated PVDF solid powder, add 15mL DMF solvent, heat and stir at 60°C, mix well, and then vacuumize to remove the bubbles in the solution to obtain sulfonic acid grafted PVDF Membrane solution;

[0043] (2) Preparation of sulfonated PVDF electrolyte membrane: the membrane solution is placed on the syringe pusher, the high-voltage device line is connected, and the electrostatic shielding device is installed, the voltage is adjusted to 12kV, the distance between the needle tube and the receiving device roller is 20cm, and the The advancing speed was 0.20mL / h, and the spinning was performed for 24 hours to obtain the sulfonated PVDF basement membrane. A basement membrane of 1 cm×4 cm was cut out as IPMC. Su...

Embodiment 3

[0044] Embodiment 3 (preparation of PVDF / graphite electrode)

[0045] Preparation of PVDF / Graphite Electrode Liquid: Weigh conductive graphite powder and PVDF to adjust the mass ratio to 1.4:1 and put them in a beaker, add DMF and place them in an ultrasonic disperser to fully disperse evenly to obtain IPMC electrode liquid; / Graphite electrode solution is coated on a glass plate, and placed in an oven to dry to form a film; the sheet resistance of the electrode obtained by testing with a four-probe instrument is shown in Table 2.

[0046] Sheet resistance of table 2 electrode solution

[0047] 1 2 3 4 5 6 average Electrode solution resistance (Ω) 4.75 5.25 5.04 5.52 5.79 4.99 5.22

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Abstract

The invention discloses a sulfonated PVDF-based IPMC electric actuator, a preparation method thereof and application of the sulfonated PVDF-based IPMC electric actuator in VR touch gloves. The IPMC electric actuator is composed of a base membrane prepared from sulfonated PVDF, PVDF / graphite electrodes fixed to the two sides of the base membrane and an external electric signal input system. The base membrane is prepared from sulfonated PVDF through electrostatic spinning, and a PVDF / graphite electrode is prepared from conductive graphite doped PVDF through slurry hanging and membrane forming. IPMC is provided with a large number of water channels. The water molecule migration amount in the material can be greatly increased through the large number of water channels, larger pressure difference and ion flow are formed in the material, an electric actuator can form larger drive advantageously, and meanwhile larger mechanical properties are provided. The IPMC provided by the invention has awider application field. For example, the IPMC provided by the invention is light in weight and low in energy consumption, so that the IPMC can be used for touch gloves of VR game equipment.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a sulfonated PVDF-based IPMC electric actuator, a preparation method thereof, and an application in VR tactile gloves. Background technique [0002] Plating precious metals such as platinum, gold, etc. on both sides of the polymer film by electroless plating can be made into an ionic polymer metal composite (Ionic Polymer Metal Composite, IPMC), also known as artificial muscle. The material can bend under the action of an electric field, and can generate a micro-electric field in an alternating bending state, so it can be applied to actuators and sensors. Due to its light weight and low driving voltage, it is similar to the performance of biological muscles. At present, it has been widely researched and applied in the field of actuators. Its driving mechanism is as figure 1 shown. [0003] Under the action of an electric field, the cations carry certain...

Claims

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Application Information

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IPC IPC(8): B81B3/00B81C1/00B81C3/00G06F3/01
CPCB81B3/0021B81C1/00134B81C1/00436B81C3/001G06F3/014B81B2201/03
Inventor 郭东杰王付义王放
Owner 三体次元信息科技(宁波)有限公司
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