Tensile fixture for nanocellulose film

Abstract

The invention discloses a tensile fixture for a nanocellulose film. The tensile fixture for the nanocellulose film comprises an upper fixture and a lower fixture which are used cooperatively, wherein the upper fixture comprises an upper joint, an upper locking nut, an upper fixture body and a first clamping part, the upper joint is connected with the upper fixture body, the upper locking nut is arranged on the upper joint, and the first clamping part is arranged on the upper fixture body; the lower fixture comprises a lower joint, a lower locking nut, a lower fixture body and a second clamping part, the lower joint is connected with the lower fixture body, the lower locking nut is arranged on the lower joint, and the second clamping part is arranged on the lower fixture body. The tensile fixture for the nanocellulose film has the advantages that the upper fixture and the lower fixture respectively adopt a short screw structure and a long screw structure, so that interference produced when the fixture is close to the nanocellulose film can be avoided, and clamping, especially clamping on a short sample, is facilitated; meanwhile, sample clamping parts of the upper and lower fixture bodies adopt corrugated jaws, clamping is reliable, and a good breaking point can be guaranteed, so that the tensile fixture disclosed by the invention is especially applicable to a tensile test experiment of a small sample.

Description

technical field [0001] The invention belongs to the technical field of testing equipment, and in particular relates to a stretching fixture for a nanocellulose film. Background technique [0002] Nanocellulose membrane and its composite film are a new type of membrane material and composite material. The nanocellulose membrane obtained by suction filtration, molding and drying or the composite film obtained by combining nanocellulose membrane and polymer materials has high strength. , small thickness, smooth surface performance. In recent years, with the development of science and technology, more and more fields require high-strength, smooth-surfaced nanocellulose membrane materials and their composite materials. Nanocellulose has been combined with more and more polymer materials, graphene materials, etc. Preparation of composite membrane materials. [0003] The nanocellulose membrane obtained by suction filtration and molding drying is usually firstly filtered by the na...

AI Technical Summary

Problems solved by technology

[0004] The nanocellulose films are all prepared from small samples. When the prepared samples are subjected to the tensile test, the overall length is between 3 and 5 cm. Since the samples are relatively short, it is not easy to load the samples. Remove the clamped edges. The sample span is small, and the existing tensile fixture is not easy to load the sample

[0005] When performing a tensile test, the existing clamps often cannot firmly hold the nanocellulose film during use, the sample is easy to slip off, and the phenomenon that the test is terminated due to slipping often occurs without breaking, so it cannot be used for Tensile test of nanocellulose films

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