玻璃钢产品的生产工艺简介

Definition – The process of spraying chopped fibers and resin, in place of mat type reinforcements, into an open mold resulting in a part with one finished surface. 将短切的纤维（替代短切毡）和树脂一起喷涂于开模 上，形成一面光滑的部件。
OCV Products: P204
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BMC
OCV Products 979
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Advantages 优点
Simple 简单 Low mold cost 模具投资低 Relatively low start up costs 启动成本相对低 (but not as low as hand lay-up) Short tooling lead time, simple design changes工具准备 时间短，设计变动容易 Virtually no product size restrictions 无产品尺寸限制
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The HLU Process
Laminating 层压
– this is the process of combining the thermoset resin and reinforcement in the mold.是将树脂和增强材料糊制成型的步骤 – rollers, brushes or squeegees are used to consolidate the laminate; wetting all fibers, releasing air and conforming to the mold.采用辊子，刷子或橡皮磙来层压成型 ，使纤维被树脂浸透，与模具贴合并赶出 气泡
– cores, stiffeners, inserts, etc. can be molded in at this stage.植入预埋件
– the part should be inspected before leaving it for dry spots, entrapped air and other defects.脱模前，检查部件的缺陷， 如未浸透处，气泡等
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Applications 应用
Marine: boats!, pleasure and commercial 商用和休闲娱乐的船 舶
Transportation: truck, bus parts 交
Mold
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Hand Lay Up – Features 手糊工艺的特点 Large parts. 大尺寸部件 Structural parts. 结构件
Low to medium volumes. 中低产量订单
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The HLU Process
– Gel Coat 上胶衣 ·if a smooth, high quality surface is required, a pigmented gelcoat is applied.如需要光滑 ，优质表面，可以采用彩胶 ·this can be flow-coated or brushed, but preferably sprayed on.可以浇涂，刷涂但最 好用喷涂 ·Where no gelcoat is used, the first layer should be veil to form a resin rich layer for better aesthetics. 如不用胶衣，需要采用表 面毡，在部件表面形成富树脂层，达到表面 效果
What Is SMC?
SMC = Sheet Molding Compound 片状模塑料 Type of FRP consisting of:包括组分

Thermosetting resin system 树脂 Glass fiber reinforcement (roving) 玻纤增强 Fillers (Calcium Carbonate, Aluminum Trihydrate)填料 Low profile additives (thermoplastic)低收缩 助剂 Cure initiators (peroxide catalyst) 固化引发剂 Thickeners (Magnesium/Calcium Oxides)增稠剂 Mold release agents (CaSt, ZnSt)脱模剂
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OCV Products 应用
CSM ( chopped strand mat ) 短切毡 M123, M123E: 300gsm, 380gsm,450gsm,600gsm M137,M137E :300gsm, 380gsm,450gsm,600gsm
采用手工方式将增强材料和树脂铺在开模中成型，获取一面为 光滑表面的部件
Variations: （不同形式）
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–
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Wet Transfer (pre-wet & carry)
Dry Transfer Resin
Reinforcements
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Input materials: （增强 材料）
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CSM, woven roving, knits, veils, etc.短切毡， 方格布，缝编毡，表面 毡等
Prototyping or production. 原型翻制
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The HLU Process 手糊过程
Mold Preparation:模具准备
– typically made of a composite with a tooling gelcoat on the surface, supported by wood or metal framing, often portable. 通常在木架或金属架上做一个玻璃钢模具 ，使用模具胶衣，可以是移动式的
– Clean and apply mold release (PVA, waxes, films).清洁模具，上脱模剂
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The HLU Process
Material Preparation 材料准备
SMC Auto Applications
Exterior Class A parts 外饰件 Structural parts 结构件
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Spray-Up 喷射
Spray-Up 喷射
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Compression Molding 模压工艺
NA
Compression Molding 模压工艺

Definition — The process using matched metal dies under high pressure to form the reinforcement and resin into the finished part. This process is suitable for molding, complex, high strength glass fiber reinforced parts using preforms, sheet molding compound (SMC) or bulk molding compound (BMC).
– most reinforcements for HLU come as rolled goods which can be placed on racks to unroll onto cutting tables.大多用于手糊 工艺的增强材料是成卷的，可以在工作台 上展开 – multiple layers can be cut at the same time using shears, utility knife or power cutters. 使用切割工具，可以一次切多层 – reinforcement can then be stored until needed, but must stay clean and dry.增强 材料应当储存在干净，干燥的环境
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The HLU Process
Finishing 结束
– after consolidation is complete, excess material can be trimmed off and the part is allowed to cure, generally at ambient temperature. 多余的材料可以切掉，在室 温下固化 – The part can then be removed using wedges, grapple points or even compressed air.脱模
- Thermoset FRP Processing 玻璃钢产品的生产工艺简介
Nov. 17, 2010 At NCM of China
Hand Lay-Up (HLU) 手糊工艺
Definition - The process of hand placing successive layers of reinforcement and resin into an open mold resulting in a part with one finished surface. Also known as contact molding.

该工艺采用金属对模，用高压将增强材料和树脂压制成型。适 用于复杂形状，高强度要求的部件；有预成型，片状模塑料（ SMC ）和团状模塑料（BMC）等 Resin Reinforcement
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© 2003 Owens Corning / Owens Corning Confidential Information
The HLU Process
Laminating 层压
– additional reinforcement layers and resin are next applied to build up the thickness.可以继续铺层以达到需要的厚 度
通运输：卡车，公共汽车部件 Corrosion: tanks, ducts, fittings防腐：罐、导 管、管件
Industrial: housings, shroud, enclosures 工业：
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机架、围栏、棚子
Consumer goods: trays, skis 消费品：托盘、滑板