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葉片用環氧樹脂區別

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31#
發表于 2009-4-22 22:05:56 | 只看該作者
Dow不是國產化了嗎?
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32#
發表于 2009-4-22 22:14:20 | 只看該作者
Dow Epoxy Systems Starts Local Manufacture of Formulations for Wind Energy in China and South Korea

Dow Epoxy Systems (DES) announced today that it has established an on-the-ground manufacturing facility in China by utilizing a state-of-the-art site from another Dow business. In addition, DES will also start producing blends in a Dow Epoxy site in South Korea, putting DES in a uniquely competitive position to supply and support its customers in China and the Asia Pacific region.

With plants strategically located in Brazil, US, Europe, China and South Korea, DES is now capable of effectively supplying customers anywhere in the world with the highest level of service.

"Establishing a local asset in China underscores our commitment to customers in the country and is a major step forward in realizing our aggressive growth aspirations in Asia Pacific," said Pepe Carnevale, global business director, Dow Epoxy Systems.

Located in Wuhan, capital city of Hubei province, the manufacturing facility is strategically located at the heart of China to service customers in both the coastal as well as inner regions of the country. Meanwhile, the DES site in Gumi is also strategically located in South Korea to support and service customers in North Asia.

The manufacturing site in Wuhan is well equipped to provide customers with differentiated, solution-based products with multiple reactors which can handle also very high viscosity formulations. The asset will be used for the multiple market segments that DES is targeting, in particular composites, wind and infrastructure.

"Coupled with our world class R&D capability in Shanghai, our facilities in Wuhan and Gumi will differentiate - and accelerate - our already successful growth in China and the Asia Pacific region, particularly in two key target markets - wind energy and infrastructure. What sets us apart from competition is our on-the-ground capability to provide customized solutions to our customers," he said.

According to the Chinese Wind Energy Association (CWEA), the Chinese wind energy market doubled in size in 2008 compared to 2007, reaching over 12 GW of total installed capacity. In 2009, new installed capacity is expected to nearly double again. At this rate, China would be well on its way to overtake Germany and Spain to become world number two in terms of total wind power capacity in 2010.  

South Korea has set ambitious growth for the establishment of renewable energies. The South Korean government has reportedly placed orders to build ten new indigenously-made wind power generators to help reduce the country's reliance on imports in the renewable energy sector. Its Ministry of Knowledge Economy said the 2-to-3 MW generators, which are expected to compete commercially with market-dominating foreign products, will be built on land owned by three state-run thermal power plants by 2010.

Meanwhile, investments in rural infrastructure and infrastructural projects such as highways and railways have been an integral part of the Chinese government's US$586 billion stimulus package, announced in November last year, in a bid to revitalize the country's slowing economy amid the global financial downturn.

"Our global presence translates into strong local support, and our integrated supply chain is our distinct competitive advantage," added Carnevale. "With the manufacturing sites in Asia Pacific and the various facilities in other parts of the world, we now have in place an unmatched global supply network that can meet our customers' needs for fast supply and high volumes of qualified materials - helping them keep pace and take advantage of growth opportunities."
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33#
發表于 2009-4-22 22:30:55 | 只看該作者
Dow 收購的歐洲公司UPPC AG ,如同Hexion收購MGS Germany一樣。

http://www.uppc.de/english/docs/ ... release_final_0.pdf

http://www.uppc.de/
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34#
發表于 2009-4-23 08:30:25 | 只看該作者
引用第19樓曾鴻鳴于2009-03-19 09:53 AM發表的  :
鄙人人認為:
對于灌注來說,粘度應該是越低越好的,只是如果不改變灌注參數,也會出現缺陷(常常是:不是白斑,而是氣泡)
另外樹脂與纖維之間的界面張力也比較重要。
灌注參數設定的根本是:界面前沿和樹脂前沿保持盡可能一致。


也不是越低越好,有個范圍的,太低了樹脂對纖維的浸潤性不好。但是一般來說環氧樹脂的粘度再低都不會低到哪里去的,除了BPF類的。
樹脂的粘度大致在700-1300mPas,混合后才如胡總所說的200多,但是范圍一般在150-350之間
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35#
發表于 2009-4-23 08:36:03 | 只看該作者
另外問各位大俠幾個問題:1.你們有沒有關注環氧樹脂分子量范圍。2.樹脂試驗對羥基當量有無要求。3.有關樹脂化學性能方面要求高不,還是只是測試樹脂和其澆鑄體的物理性能和工藝性能。
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36#
發表于 2009-4-23 10:50:56 | 只看該作者
引用第25樓weiyuzhu于2009-04-13 05:21 PM發表的  :
現在咱們國內沒有樹脂供應商,全是Hexion、DOW、Huntman,為什么不在國內找一家供應商吶?
價格、供貨周期都是很大的優勢,未來的風電競爭就是價格的比拼,現在不找以后還要再找供應商
到時再認證檢測就要很多時間。品質方面可以達到進口標準。
灌注樹脂粘度一般在1000cps左右,混合粘度在250cps左右


我建議大家聯系聯系藍星, 他們在做葉片用環氧的配方, 而且藍星無錫自己產環氧, 比那些小公司強多了
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37#
發表于 2009-4-25 21:50:15 | 只看該作者
樓上的,發白有時跟樹脂是沒有關系的。在做真空、灌注、后固化 。都是有原因的
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38#
發表于 2009-4-27 15:58:53 | 只看該作者
引用第25樓weiyuzhu于2009-04-13 05:21 PM發表的  :
現在咱們國內沒有樹脂供應商,全是Hexion、DOW、Huntman,為什么不在國內找一家供應商吶?
價格、供貨周期都是很大的優勢,未來的風電競爭就是價格的比拼,現在不找以后還要再找供應商
到時再認證檢測就要很多時間。品質方面可以達到進口標準。
灌注樹脂粘度一般在1000cps左右,混合粘度在250cps左右


國內已經有做環氧樹脂的啦,LZ下方的廣告就是一家業內做環氧樹脂的企業,據說還不錯。
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39#
發表于 2009-5-18 17:32:01 | 只看該作者
引用第28樓iseeall于2009-04-22 10:05 PM發表的  :
Dow不是國產化了嗎?

國產化?還得一段時間,現在他的基礎樹脂都是進口過來在國內張家港工廠復混
供貨周期還是比較漫長的,而且DOW的價格是幾家進口當中最為高的
現在市面上流動最多的還是Hexion
國產的
上緯的 在國內有的做,但不多,他們的產能也不是很大
圣潔的 在國內原來是做不飽和的小葉片,現在澆注樹脂也做出來啦,并拿到啦GL證書,用的人就更少啦
國都化工 也拿到啦GL證書,基礎樹脂也是自己生產,很多葉片廠都在聯系啦,不過現在還沒有人用過
惠利現在也拿到啦GL證書,市場份額還不曉得
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40#
發表于 2009-5-20 15:33:13 | 只看該作者
上緯的樹脂還是不錯的,年產能能到4萬噸,而且目前每個月也有三四百噸出貨,400套上緯樹脂制作的葉片成功掛機,成績不錯啊,各位如有需求可以聯系!seanxiao6831@163.com
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