预成型

异型钢丝的生产RTM工艺的预成型技术研究

Production of Special shaped Steel Wire STUDY ON RTM PREFORMING PROCESS

RTM工艺的预成型技术研究

Study on RTM preforming process

纤维预成型技术是LCM工艺的一个重要环节。

The tackified fiber preform technology is important in LCM process .

论文根据三维编织原理及对预成型件细观结构的分析，利用计算机图形学技术、Visualc++。

Based on the analysis of the 3-d braiding mechanism and the microstructure a simulation system was developed for 3-D braiding using computer graphics , Visual C + + .

LCM工艺中注射压力对纤维预成型体渗透率的影响

Influence of injection pressure on permeability of fibre preform in LCM

LCM工艺中纤维预成型体渗透率的研究

Study on Permeability of Fiber Perform in LCM

LCM用纤维预成型体技术研究

Fabrication technology of fiber preforms for LCM

研究了PTFE废料粒径、各种填料用量及预成型压力对产品性能的影响。

The influence of granule size of waste PTFE , mass ratio of fillers and the preforming pressure to the performance of the product is studied .

纤维预成型技术是复合材料液体模塑工艺（LCM）低成本化中的重要方面。

The fabrication technology of fiber preforms for liquid composite molding ( LCM ) is an important aspect on cost-effective composites .

对复合材料一体化制造过程中的编织预成型体织造技术、RTM工艺及Sol-gel工艺进行了介绍，并对具体工艺过程进行了分析和探讨。

This paper introduces the weave technology of the pre-shaped body in the integrated manufacture process , RTM process and Sol-gel process . Detailed process is discussed and analyzed .

纤维预成型体的渗透率是构件成型中控制渗流方式和进行充模流动数值模拟的关键参数，属于LCM工艺的基础性研究。

As one of the basic study in LCM , the permeability of fiber perform is a key to the control of flow pattern and the filling simulation .

预成型体渗透率是LCM工艺的重要工艺参数，直接影响纤维树脂的流动浸润过程和效果。

Pre-forming process LCM penetration rate is an important process parameters , which will directly impact on the flow of resin fiber and effectiveness of the process of infiltration .

在复合材料液体模塑成型工艺中（LCM），预成型体和模具壁间存在的缝隙容易产生优先的树脂流道，即为常见的边缘效应。

In liquid composites molding ( LCM ) processes , a gap between the perform and the mold edge can create a preferential flow path for the resin , which is the so-called edge effect .

结果表明；丙烯酸型粘合剂用量为纤维用量的3%时，与不同的基体树脂有较好的相容性，从而使RTM预成型工艺取得满意效果。

The result shows that when the acrylic adhesive agent content is 3 % of the fibre agent content , the adhesive agent has good mutual solubility with matrix resin , which can make the RTM preforming process satisfactory .

本论文依据RTM技术的最新进展，从预成型体设计和充模过程控制两个方面研究了气泡、干斑和结构变形三种缺陷的形成机理和消除方法。

According to the new development of the RTM technique , the study of this paper includes two parts , one is the defects formation mechanism and effect factors , the other is the control method in resin transfer molding .

预成型体渗透率是LCM工艺重要的材料工艺参数，建立渗透率模型对认识纤维/树脂流动浸润机理，更准确地预报渗透率及优化工艺和材料参数具有重要意义。

The permeability of preform is an important material processing parameter . To build a model of estimating permeability is significant for understanding the wetting mechanism of fiber to resin , forecasting the permeability and optimizing the process and material parameters accurately .

炭纤维平纹编织物和炭纤维Z-pin制备的预成型体，通过化学气相渗透（CVI）工艺制成Z-pin增强平纹编织陶瓷基复合材料。

A preform consisting of plain woven fabric and Z-pin through thickness reinforcements was prepared . The process of chemical vapor infiltration ( CVI ) was used to fabricate the ceramic matrix composite with Z-pins .

非寄主抗性涉及植物叶面或表皮细胞提供的预成型物理或化学壁垒，这些预成型保护机制不仅可以阻止侵染结构的建立，而且能够诱导物理或化学抗性（Heath2000；MysoreandRyu2004）。

NHR can involve preformed physical or chemical barriers present on the plant surface or in epidermal cells that can stop establishment of infection structures as well as induced physical or chemical defenses ( Heath 2000 ; Mysore and Ryu 2004 ) .

本课题研究的主要内容是模压方法加工亚麻纤维增强低熔点涤纶（LMPET）复合材料，预成型件为亚麻/LMPET混合非织造布，并且测试、分析了的复合材料的各项性能。

In this research , the method of compression moulding flax reinforced low melt point PET ( LMPET ) composite and the properties of composites are studied . The preforming is in the form of nonwovens .

预成型体纵向渗透率统计模型

Research on the statistical model for the longitudinal permeability of preform

分析了三种锥形管状预成型机织物的织造方法。

Three weaving methods of cone-shaped tubular woven preforms were discussed .

高模碳纤维M40/聚酰亚胺预成型膜层合复合材料的研究

Laminated Composites of High Modulus Carbon Fiber M40 / Polyimide Films

盘式制动片预成型工艺特点与设备

Process Features and Equipments of the Pre-formation of Brake Discs

应用胎面预成型技术提高轿车子午线轮胎动平衡检测通过率

Improving Dynamic Unbalance of Passenger Car Tire with Preformed Tread

四步法三维编织预成型仿真系统的设计与实现

The design of four-step 3 D braiding process simulation

复合材料低成本成型用预成型体的制备

Preparation of the preform for low-cost forming of composite

含预成型孔复合材料单层板的一种设计方法

A Design Method for Composite Ply Containing Preformed Hole

应用胎面预成型技术改善轿车子午线轮胎带束层帘线排列

Application of Preformed Tread Technology to Improving Belt Cord Bending of Passenger Radial Tire

含预成型孔复合材料层合板的强度分析

Strength analysis of composite laminates containing preformed hole

复合材料高压气瓶用预成型织物的设计与织造

Structural design and weaving of preformed fabric for manufacturing composite high-pressure cylinder for gases