Shape Group(Witney，UK)已經(jīng)成功地將短纖維板料(SMC)組合在優(yōu)化的連續(xù)碳纖維ShapeTex預(yù)制件上的批零件進(jìn)行了壓縮成型。這個(gè)過程通常被稱為
過模
。通常情況下，模具是注射成型的化合物，但是在這種情況下ShapeTex使用的是壓縮成型的SMC。
ShapeTex
預(yù)制體使用連續(xù)的碳纖維束，使完成的部分具有顯著的強(qiáng)度，包括徑向和軸向增強(qiáng)。短纖維SMC采用環(huán)氧樹脂。成品厚4.5毫米。
公司不能宣布這一示范的客戶。“但這是一個(gè)令人興奮的發(fā)展，”Shape的董事總經(jīng)理彼得·麥庫爾(Peter McCool)說。“我們使用ShapeTex預(yù)制體的連續(xù)纖維作為結(jié)構(gòu)支撐，我們在上面加固一個(gè)短纖維層壓板，它可以更容易地流動和填充模具型腔。”
“這項(xiàng)技術(shù)的潛力相當(dāng)大，”McCool繼續(xù)說。“我們已經(jīng)對這一組合進(jìn)行了很長一段時(shí)間的研究，并認(rèn)為現(xiàn)在是將其推向市場的時(shí)候了。”我們有幾個(gè)客戶，他們喜歡SMC的美觀外觀，喜歡用管道、肋拱和固定滾筒按壓和修復(fù)部件的能力，這意味著我們可以將特性合并到一個(gè)復(fù)合部件中，否則需要多個(gè)操作和部件。這一工藝是用環(huán)氧樹脂熱固性樹脂開發(fā)的，并使用經(jīng)批準(zhǔn)的樹脂系統(tǒng)提供了強(qiáng)度優(yōu)化的封閉模塑件。“
雖然這些試驗(yàn)是在一個(gè)扁平的模式下進(jìn)行的，但是這個(gè)過程同樣適用于復(fù)雜的和雙曲率的零件。Shape的目標(biāo)是在汽車和體育器材市場上大量應(yīng)用這一過程。
原文如下：
Shape Group (Witney, UK) has successfully compression molded the first batch of parts that combine short fiber sheet molding compound (SMC) over an optimized, continuous carbon fiber ShapeTex preform. This process is commonly referred to as
overmolding
. Typically, the overmold is an injection molded compound, but in this case ShapeTex used a compression molded SMC.
The
ShapeTex
preform uses a continuous tow of carbon fiber that gives significant strength to the finished part, including both radial and axial reinforcement. The short fiber SMC uses epoxy resin. The finished part is 4.5mm thick.
The company cannot announce the customer for this demonstration. “But it’s an exciting development,” says Shape’s Managing Director, Peter McCool. “We use the continuous fiber of the ShapeTex preform as the structural backing on to which we consolidate a short fiber laminate that can flow and fill the mold cavity more easily.”
“The potential of this technology is quite significant,” McCool continues. “We have been working on this combination for quite a while and feel that now is the time to bring it to market. We have several customers that like the aesthetic look of the SMC and the ability to press and cure parts with channels, ribs and fixing bosses means that we can incorporate features into a single composite part that would otherwise require multiple operations and parts. This process has been developed using epoxy thermoset resins and offers closed molded parts with optimized strength using approved resin systems.”
Although these trials were conducted in a flat mold the process lends itself equally to complex and double curvature parts. Shape is targeting high volume applications in the automotive and sports equipment market with this process.
English
簡體中文
