竹安全帽编织工艺及产品性能研究

Study on Technology and Performance of Bamboo Safety Helmet

竹安全帽编织工艺不仅发挥了竹材良好的劈篾性能和力学强度,而且是对传统竹编技术的传承和延伸,具有很高的应用推广价值。竹编安全帽采用经纬编织方法编制而成,具有天然缝隙,透气、透湿性能优良,轻质高强。系统分析了竹编安全帽的材料选择、制作工艺、性能评价,经测试产品的冲击吸收和耐穿刺性能均达到GB/T 2811—2019《头部防护安全帽》标准规定。通过表征竹编安全帽不同结构冲击吸收能量的分布特征,初步阐述了竹编安全帽在落锤撞击过程中的能量传递和破坏规律。研究结果可为竹编安全帽产品的技术进步、标准制定、产品推广提供依据。

Bamboo safety helmet not only gives full play to the good splitting performance and mechanical strength of bamboo materials,but also inherits and extends the traditional bamboo weaving technology,which has high application and promotion value.Bamboo safety helmet is made of warp and weft knitting method,with a large number of crisscross gaps existing in the whole helmet body.This structure endows it with excellent breathability and moisture permeability,as well as light weight and high strength performance.In this study,the bamboo safety helmets were manufactured with different process and materials parameters.Then the performance evaluation of the bamboo woven safety helmet was systematically characterized.The results showed that the impact absorption and puncture resistance of the tested product all meet the provisions of the GB/T 2811—2019"Head Protection Safety Helmet"standard.Furthermore,the law of energy transfer and failure for bamboo safety helmet during process of falling hammer impact were clarified by characterizing the energy distribution absorbed by different structure units of helmet during impact.The research results could provide a basis for the technical progress,standard formulation and product promotion of bamboo woven safety helmet products.