Preparation method of bamboo-based hybrid fiber felt for VARTM molding composite material

Abstract

The invention provides a preparation method of a bamboo-based hybrid fiber felt for a VARTM molding composite material. The method comprises the following steps: firstly, putting bamboo fibers into a distilled water solution, stirring until the bamboo fibers are dispersed, and sorting out standard bamboo fibers; uniformly dispersing the standard bamboo fibers in a sieve, placing the sieve in a wet-process layer laying device, and immersing the sieve in an ultrasonic device filled with different solvents for treatment; adding one or more other fibers into the sieve, carrying out ultrasonic treatment, standing, pre-pressing, evaporating the solvent in the fibrofelt, and taking out the formed bamboo-based hybrid fibrofelt; and repeating the above steps on bamboo fibers and other fibers which are equal in mass to obtain a plurality of formed bamboo-based hybrid fiber felts, sequentially stacking and pressing the fiber felts in the sieve to obtain a bamboo-based hybrid fiber felt, and naturally airing and drying the bamboo-based hybrid fiber felt to obtain a bamboo-based hybrid fiber felts for the VARTM formed composite material. The process steps are simple and convenient, the bamboo fibers and other fibers can be uniformly mixed and dispersed, and damage in the mixing preparation process of different fibers is also avoided.

Description

technical field [0001] The invention belongs to the technical field of fiber felts, and in particular relates to a preparation method of bamboo-based hybrid fiber felts for VARTM molding composite materials. Background technique [0002] Since the 21st century, the global timber supply and demand are still low. As the second largest forest resource, bamboo has attracted widespread attention because of its low density, high strength, easy processing, and short growth cycle. It has high performance and high added value. High-value bamboo fiber composite materials not only meet the needs of human life and social development, but also make up for the shortcomings of bamboo itself such as uneven structure, obvious anisotropy, and poor durability. [0003] VARTM technology has become an emerging technology for the preparation of plant fiber composites in recent years due to its low manufacturing cost, high product performance and low environmental pollution. In the preparation of ...

AI Technical Summary

Problems solved by technology

Then the dispersion and paving of hybrid fibers is a major problem in the preparation of fiber composite materials. At present, hybrid fiber mats are often prepared by manual paving and needle punching processes. Manual paving is often caused by the operator's skills and proficiency. The fibers cannot be evenly dispersed, and a lot of labor is required, and the needle punching process is likely to cause a certain degree of loss to the plant fibers due to mechanical puncture, thereby reducing the strength of the plant fiber composite material and reducing the service life

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