基于LFt-D模压技术的长纤维增强热塑性复合材料建筑模板成型工艺研究

打开文本图片集

中图分类号：TB332 文献标志码：A

Research on the forming process of long fiber reinforced thermoplastic composite building formwork based on LFt -D molding technology

HU Mingshan

（Organizational Information：Jiuzhou Vocational and Technical College，Xuzhou221116，Jiangsu，China）

Abstract： To ensure the quality of long fiber-reinforced thermoplastic composite building formwork，this paper conducts research on the forming process of long fiber-reinforced thermoplastic composite building formwork based on LFt-D （long fiber thermoplastic direct） molding technology. Determine the raw materials for long fiber reinforced thermoplastic composite building templates， analyze the process flow and application advantages of LFt - D molding technology，analyze the process influencing factors of LFt-D molding technology，and calculate the relevant process parameters of this technology； Select appropriate LFt-D compression molding equipment to produce three different process parameters of building formwork specimens， S1，S2，and S3，with the same size；Analyze the average fiber length of the specimens using scanning electron microscopy，calculate the crystallnity using differential scanning calorimetry，test the mechanical properties using a universal testing machine，and analyze the application performance of each specimen; The orthogonal experimental method was used for testing，and the optimal molding process parameters for the long fiber reinforced thermoplastic composite building formwork were determined as follows： molding pressure of 5000kN ，mold temperature and holding time of 100∘C and 40s ，respectively. The test results showed that under the optimal parameters，the degree of warping deformation of the building formwork could be effectively reduced，and the quality of the building formwork molding could be improved.

Key words：LFt - D （long fiber thermoplastic direct） molding technology； long fibers;enhance thermoplasticity； compound material； building templates； forming process

0 引言

长纤维增强热塑性复合材料以连续的长纤维粒料为主，经切粒处理后形成所需的固定长度纤维。（剩余10470字）