全文总字数：9260字
1. 研究目的与意义（文献综述）
plant fiber composite material is an organic combination of plant fiber and plastic. it has the dual characteristics of both, has good physical and mechanical properties and processing properties, can be reused and recycled. it is a resource-saving and environment-friendly material. . compared with materials such as steel, aluminum, and concrete, plant fiber composites have superior biodegradability because the main component, cellulose fibril aggregation, is a two-dimensional combination of crystalline and amorphous regions. in the system, the molecular internal environment has a variety of aggregate structures, many gaps, and polydispersity. due to the natural degradability of plant fibers, it effectively gives the degradation properties of plant fiber composites, overcomes the weak characteristics of high-molecular plastics, strengthens and avoids weaknesses, alleviates the secondary use of waste resources in the plastic and wood industries, and truly realizes product resource , plasticization, environmental protection, economical, recycling.
with the continuous development of the automotive industry, energy saving, environmental protection, safety, and lightweight will become the main development direction of future automobiles. compared with traditional materials, plant fiber composite materials have the characteristics of high rigidity, high strength, and light weight. leading the world's automotive industry towards gradual weight reduction and cost reduction is an inevitable trend for the development of future automobile manufacturers. in terms of product weight reduction effects, sound insulation effects, and collision experiments, plant fiber composites have great advantages, especially a series of advantages such as renewable, degradable, recyclable, low cost, and low harm to humans. compared with traditional materials, plant fiber composites have the advantage that after the collision, no debris and sharp edges are generated. in some experimental tests, it can be found that the plant fiber composite material can effectively avoid secondary injuries to people after a collision, and has better safety.
in recent years, plant fiber composite materials have become more and more widely used in automotive interiors. they are mainly used in the production of interior parts such as car roofs, trunk liners, heat insulation pads, sun visors, bumpers, and door trims. . swiss car manufacturers mainly use linen fiber for automotive parts such as roofs and hoods, which can effectively reduce weight by more than 40%. in germany, wood-plastic composite materials are mainly used to make instrument panels and door panels, which effectively improves the strength of interior trims and reduces weight by 17%. there are also a large number of vehicle models in china that use plant fiber composite materials. the interior decoration is mainly made of door panels, rear partition panels, ceilings and elevated boxes.
2. 研究的基本内容与方案
(1)research contents
1. performance analysis of door interior trim panels and plant fiber materials
2. establishment of cae model
3. 研究计划与安排
1-2 (weeks 18-19 of the 7 semester)
determine graduation project topics, improve graduation project assignments (relevant parameters), and collect data inside and outside the school
3 (1st week of 8 semesters)
4. 参考文献（12篇以上）
[1]harpreet singh,jai inder preet singh,sehijpal singh,vikas dhawan,sunil kumar tiwari. a brief review of jute fibre and its composites.materialstoday：proceedings, 2018, 5:427-437
[2] n. karthi,k. kumaresan,k. kumaresan,s. sathish ,s. gokulkumar,l. prabhu,n. vigneshkumar.an overview: natural fifiber reinforced hybrid composites, chemical treatments and application areas.materialstoday：proceedings, 2020
[3] yan li,li xie,hao ma. permeability and mechanical properties of plant fifiber reinforced hybrid composites. materialsdesign, 2015,86:313-320
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