Preparation method of natural bamboo fiber composites and application thereof

A preparation method of natural bamboo fiber composites, wherein comprising following steps:

• S1. preparing a treatment solution including sodium hydroxide, sodium silicate, sodium sulfite, composite sodium phosphate, and sodium carbonate;
• and
• S2. cutting a bamboo into bamboo slices, then soaking the bamboo slices in the treatment solution obtained in step S1 for 5-7 days;
• taking out the bamboo slices after soaking, immersing in a sodium hydroxide solution with a mass percentage of 4-10%, and heating at 70-100 degree for 1-3 hours;
• adding an acetic acid to a pH of 6.8-7.2 after heating, taking out the bamboo slices, cleaning and drying, then separating manually to obtain natural bamboo fibers;
• and
• S3. mixing the natural bamboo fibers obtained in step S2 with polypropylene fibers evenly, using a process of opening, carding, lapping and needle-punching to produce a natural bamboo fiber felt material;
• then laying a fabric on a surface of the natural bamboo fiber felt material, and using a secondary needle-punching process to produce a natural bamboo fiber composite felt;
• after heating to soft the natural bamboo fiber composite felt, pressing into shape to produce natural bamboo fiber composites.