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楼主: 徐家汇

叶片用环氧树脂区别

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发表于 2009-3-19 09:59:07 | 显示全部楼层
对于叶片本身质量来说:
最重要的是叶片的耐疲劳性能和机械强度;
那么对于树脂的要求最关键的要求是两个:
1. 树脂与所选用的纤维之间的界面粘接强度
2. 树脂的断裂延伸率
耐热性能则是根据需要,理论上当然约高越好
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发表于 2009-3-19 14:37:08 | 显示全部楼层
所用增强纤维与所用树脂基体 界面性质能相协调
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发表于 2009-3-19 16:06:21 | 显示全部楼层
引用第21楼spar_cap于2009-03-19 02:37 PM发表的  :
所用增强纤维与所用树脂基体 界面性质能相协调

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发表于 2009-3-20 20:13:22 | 显示全部楼层
如果这样就能决定用一种灌注体系,那就太便宜了吧。

其实每个公司由每个公司的认证体系。 叫做materials specifications 这么一个东西,

但是你也不能拿着Suzlon和树脂认证标准和Vestas的芯材标准混用,

如果一下子说要满足怎样一个条件都是太过于简化的。

就算是免打磨布这样的东西,要改动都是褪一层皮的事:如有的树脂体系对尼龙的免打磨布兼容性很好,没有Nylon transfer, 作了XPS检测, 做wettability 试验,contact angle 也小,粘结性能很好,但是如果用在另一树脂体系上,也许就有Nylon transfer,然后导致粘结强度变差,或者是短期还可以,长期的粘结强度下降很快。

这不是这么简单的事情。

很多事情做得太仓促,无知者无畏...................
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发表于 2009-4-12 21:36:22 | 显示全部楼层
是双酚A的吗,树脂的黏度有这么低吗?
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发表于 2009-4-13 17:21:44 | 显示全部楼层
现在咱们国内没有树脂供应商,全是Hexion、DOW、Huntman,为什么不在国内找一家供应商呐?
价格、供货周期都是很大的优势,未来的风电竞争就是价格的比拼,现在不找以后还要再找供应商
到时再认证检测就要很多时间。品质方面可以达到进口标准。
灌注树脂粘度一般在1000cps左右,混合粘度在250cps左右
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发表于 2009-4-13 17:30:22 | 显示全部楼层
国内也有,上纬的性价比不错!有需求的请联系!
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发表于 2009-4-16 16:17:24 | 显示全部楼层
引用第26楼wesley于2009-04-13 05:30 PM发表的  :
国内也有,上纬的性价比不错!有需求的请联系!
呵呵  楼上的兄弟是哪位啊?
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发表于 2009-4-22 22:05:56 | 显示全部楼层
Dow不是国产化了吗?
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发表于 2009-4-22 22:14:20 | 显示全部楼层
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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