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POM 美国杜邦 DE7057 特性： 

POM 美国杜邦 DE7057 体育设备原料 汽车配件 电动车配件 耐磨

POM 美国杜邦 DE7057                    

POM 美国杜邦 DE7057

POM 美国杜邦 DE7057

POM 美国杜邦 DE7057

POM 美国杜邦 DE7057

POM 美国杜邦 DE7057 其他型号报价:

POM 美国杜邦 DE7057

新POM稳定剂对POM热氧老化的稳定作用影响

聚甲醛POM在热氧状态下以分解出甲醛气体而失重为特征，因此测定聚甲醛在200 oC下保持1 h、2 h后的热失重率可充分反映出聚甲醛POM稳定剂对于聚甲醛的热稳定保护程度，失重率低者预示着POM稳定剂对于热氧老化的稳定效能好

可以看出，使用新POM稳定剂具有与原POM稳定剂相似的热失重率或更低，说明新POM对于聚甲醛POM的热氧老化保护是充分的。新POM稳定剂中，抗氧化剂245的用量低于原POM稳定剂配方，但由于抗氧化剂1425也是酚类抗氧化剂结构，对于聚甲醛POM同样具有抗氧化效果，才使得新POM稳定剂具有优异的抗热氧老化效能。

2．2 新POM稳定剂对结晶性能的影响

在聚甲醛POM分别添加定量的原POM稳定剂和新POM稳定剂，用差示扫描式量热(DSC)仪测定其结晶温度和结晶时间

可以看出，添加新POM稳定剂相对于添加原POM稳定剂，对于聚甲醛POM来说提高了结晶温度近3．5℃ ，结晶时间缩短了近9．5 s，结晶时间缩短了11．4％。这充分说明新POM稳定剂，对于聚甲醛POM具有成核剂作用。也充分说明抗氧化剂1425的使用对于聚甲醛POM具有成核作用，这与抗氧化剂1425为有机磷酸钙盐，熔点>1260 ，与抗氧化剂245、三聚氰胺和滑剂EBS混合后在POM熔融进聚甲醛POM，在降温结晶过程中先以POM固化，从而取到晶核剂的效果。

2．3 聚甲醛POM机械性能的影响

在生产聚甲醛POM过程中，由于经历热氧过程，聚甲醛POM会因热氧导致链的末端的发生解聚而产生甲醛挥发性气体，并伴随质量减少和产生变色，从而对机械性能、加工稳定性产生影响。分别测定添加原POM稳定剂和新POM稳定剂加工后的聚甲醛POM的机械性能和熔体流动速率(MFR)。

可以看出，新POM稳定剂的加入在拉伸强度上基本上与使用原POM稳定剂相当，很好地保持了POM的拉伸强度；在熔体质量流动速率MFR上稍有下降，降幅在1．5％ ，不会对POM应用构成影响；而断裂伸长率和缺口冲击强度得到了大幅的提高，这是因为新POM稳定剂中所含有的抗氧化剂1425具有POM成核剂的作用，使得POM球晶半径减少，球晶界面变得模糊，球晶之间的空隙越小，晶体堆积越紧密，当受到外来冲击时，使应力分布均匀，冲击强度得到提高。这充分认证了抗氧化剂1425在聚甲醛中具有异相成核剂的作用，所以新POM稳定剂对于提升POM的力学性能具有优异的作用。

(1)在POM中添加1．0份的新POM稳定剂具有优异的耐热稳定性和机械性能，优于使用0．8份原POM稳定剂。

(2)新POM稳定剂中的抗氧化剂1425成分对于POM不仅具有抗氧化剂效能，同时具有成核剂作用，其有利于POM的机械性能的提高和稳定，同时由于提高了结晶温度，利于POM在小型滚、滑动部件的加工应用。

POM 美国杜邦 DE7057

Since 2007, linear low-density polyethylene (LLDPE), polyvinyl chloride (PVC (6155, -65.00, -1.05%)) and polypropylene (PP) three plastic futures varieties in the Dalian Commodity Exchange (hereinafter referred to as " Big business ") have been listed. Over the past decade, the plastic futures system and market mechanism has been gradually improved, the futures market price discovery and risk management functions have been deepened, and the recognition of the industry customers' futures tools has gone from unfamiliar to familiar processes. In the international oil price fluctuations and the fundamentals of domestic supply and demand changes in the macro background, the plastics industry, enterprise customers gradually use futures tools for market pricing, hedging and inventory management, to participate in the futures market, enterprise customers gradually increased, participation from the basic Futures trading to expand to the base pricing, OTC options and other emerging areas. In the increasingly complex market environment, plastic futures has become a plastic industry chain-related business management market risk, robust development of a powerful tool.

Found price: futures prices become a plastic business "compass"

Since 2014, the international oil prices fell sharply, the domestic price of plastic products with a greater volatility. Plastic companies refer to the futures contract price, timely adjustment of raw material procurement strategies and inventories, rational development of business plans to improve business decision-making level. Relevant market participants said that the futures price of plastic spot market allocation of resources is very significant role, more and more attention by the plastics industry enterprises, futures prices have become the benchmark for the spot market.

Plastic futures have also brought about changes in the pricing of the plastics industry. For a long time, the plastic market pricing is usually based on petrochemical enterprises, traders follow the traditional model. With the continuous expansion of Dalian plastic futures market and influence gradually increased, futures prices have become an important reference factor in the market to futures prices for the reference pricing model gradually in the plastics industry to promote. Market participants said that many spot companies from the previous 8:30 fixed daily quotation into the futures after the opening offer, the frequency of the offer from the previous day once the offer changed to now according to the futures market for several real-time quotes.

In 2016, the three major plastic futures prices are maintained at a high level of 0.85, 0.97 and 0.94, plastic futures prices and spot prices close fit, price discovery function effectively. Dalian plastic futures prices have become the industry and the market "compass". Such as a trading day plastic futures prices rose sharply, the spot price is likely to follow the futures prices simultaneously higher, some traders will even reluctant to sell; the other hand, when the futures prices, spot quotes will be reduced.

Hedge hedge: futures market for plastic companies propped up "umbrella"

Due to the volatility of crude oil prices and the impact of the new coal-to-olefins plant, plastic industry customers need to use derivative tools for risk management. Some mid-range traders from the plastic futures market began to focus on the futures market, try to use hedging hedging hedge instruments. After years of exploration and practice, enterprises have formed a mature, perfect hedging strategy, a stable development of an important weight. Shanghai Four Union Flying Chemical New Materials Co., Ltd. relevant person in charge said that the company from the listing of LLDPE in 2007, they began to participate in the futures market hedging, has now formed a standard base trade, non-standard basis trade, The price of non - standard dish and the non - standard plate price four hedging mode. In the above hedging mode, enterprises for different market and demand to carry out different hedging business, and the effective use of futures standards and non-standard price-related, expand the range of safe-haven varieties for enterprises to resolve a variety of market risks Important guarantee.

In addition, some traders will futures market as a new channel for buying and selling, according to the futures premiums and discounts to adjust the hedge ratio and spot purchase and selling strategies, thereby reducing inventory costs and improve profits. Zhejiang specialty petrochemical Co., Ltd. official said, when the futures premium spot more, with the use of futures to build empty single pre-sale, while locking the profits while reducing the risk of falling stocks. During which if the spot price rise, the current price difference narrowed, and then futures a single open, to the downstream customer sales spot. When the futures premium spot more, the company futures as a procurement channel in the futures market to establish more than a single, while the downstream customers will sell the spot, the current price difference is expected to return after the liquidation.

Over the past decade, Dalian plastic futures market price discovery and hedging functions of the increasingly perfect, led the industry to actively participate in the futures market. The number of legal clients involved in the trading of plastic futures in Dafa increased from 174 in 2007 to 7539 in 2016. In 2016, the hedge efficiency of the three major plastic futures varieties remained at 61%, 68% and 75% respectively. The proportion of plastic traders' spot trade was 50% -70%, and plastic futures had become domestic Futures market, industrial enterprises to participate in a higher degree of hedging one of the better results for the operation of a number of plastic varieties at the same time the production, trade and consumer manufacturers to provide a complete hedging industry chain.

Basis pricing: gradually become the mainstream of the plastic industry pricing model

In recent years, the domestic plastic industry market environment has undergone great changes. In the domestic chemical industry demand growth slowed down at the same time, China's chemical industry capacity growth year after year, there is oversupply situation, the industry as a whole profit margins decline. In this context, the traditional business risk management model encountered a "ceiling", plastic companies began to seek safe haven innovation and breakthrough. Base point price model is gradually in the plastics industry to promote the popularity of the current plastic industry has become a new bright spot of integration. In the base pricing model, the buyers and sellers signed a purchase and sale contract, according to the futures market price lock basis, by the buyer before shipment to select a point in the futures price for the valuation basis to futures prices together with the agreed agreement To determine the spot price of both sides.

At present, the base price of the plastic industry has gradually become one of the most popular pricing model, more and more industrial customers in the pricing when using the base pricing model. Upstream enterprises through the signing of the base contract, in advance to sell products to lock production profits. Midstream traders face the double uncertainty of the sale price, in different stages of the market using different base pricing model. In the specific operation, such as the price after a continuous decline in the bottom of the stage, and the futures price premiums larger, the traders to the base price point from the upstream enterprises to buy the spot to lock in procurement costs; when the market after a wave of obvious Of the rise to the stage of high, and poor spot sales, inventory accumulation, the traders to the base price of the way to the downstream business sales of the spot. Downstream plastic processing enterprises to wait for futures prices fell sharply and futures prices greatly premium, to the base price point to the traders to purchase the spot, ahead of lock production costs.

A representative of the East China Plastics traders, said the company in 2009 after the PP futures market gradually after the base price, in recent years, PP futures contracts will have a certain amount of the price, accounting for about 10% of the company's overall distribution. By the end of 2015, PP futures prices fell to 5361 yuan / ton low, spot prices also fell to the low since 2008, far month contract premium 500-700 yuan / ton, part of the factory is expected next year, business orders There is a slight increase, so, in December 2015 to January 2016 downstream factories have entered the market price, according to far month prices plus 150 yuan / ton pricing, procurement standing inventory. At that time the size of the East China market price of about 100,000 tons, accounting for about 5% of the average monthly demand.

After ten years of development, the base price transaction has become the development trend of the plastics industry. In the downstream processing enterprises under the premise of sufficient orders, traders use base bargain way to downstream enterprises to sell long-term goods, while hedging in the futures market, both for the downstream business to lock the next period of time the cost of raw materials, but also for the trade enterprises Expand the trading channels, increase the viscosity of downstream customers.

OTC options: gradually win the favor of industry customers

In addition to the basic pricing business, the past two years, OTC option has also entered the vision of plastic business managers, and its more flexible and sophisticated risk management approach to some enterprises of all ages. OTC options are similar to price insurance, with limited risk, less capital and other advantages, designed by professional financial institutions to meet the demand for off-site options and financial institutions in the futures market on behalf of the operation, industrial enterprises only pay a small amount of royalties Will be able to achieve the purpose of locking the future market price, conducive to business management of plastic price fluctuations risk.

In the positive promotion of the business, the OTC option business has been in the plastics industry to promote and preliminary application. Shanghai Sihe Flying Chemical New Materials Co., Ltd. person in charge, the company began in 2015 contact OTC options. When the stock is high and continue to increase, the company will buy put options. If the future price of plastic fell, from the futures risk management company to obtain price compensation, companies do not have to worry too much about the loss of inventory value, you can focus on business operations. He said that the current over-the-counter options have higher premiums, so the plastic industry's over-the-counter option activity has yet to be improved.

Futures market to actively explore the new path of integration

After ten years of sound management and innovation and development, Dalian plastic futures market rules and regulations continue to improve, the market continued to expand the scale of futures functions to give full play to the use of futures market hedging has become a plastic industry business new normal. On the basis of maintaining and consolidating the existing service system, Daxang will continue to introduce more and more refined new model of service industry, which will continue to escort the plastics industry and help the plastics industry to realize the plastics industry and futures market. Communion, win-win development.

如需了解更多关于POM 美国杜邦 DE7057及 的详细信息，欢迎致电联系。

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POM 美国杜邦 DE7057今日新闻：

中新网5月23日电 据外媒报道，在撒哈拉沙漠的难民营，为了抵御恶劣的天气，人们用废弃的塑料瓶建造起了房屋。

近日，联合国难民署发布的一段视频中显示，居住在阿尔及利亚撒哈拉难民营的布雷卡(Tateh Lehbib Breica)正在用装满沙子的塑料瓶建房子。

据介绍，布雷卡居住的这个难民营叫Awserd，有的人已经在这里生活了几十年。但是，由于沙漠地带天气恶劣，沙尘暴、暴雨、高温给难民的家园造成了严重损害

在这个营地，难民的住所原本是用一些简易帐篷或是土坯泥砖建成的。2015年的一场风暴摧毁了该地区的数千所房屋。而当大雨侵袭时，塑料瓶沙石房屋更坚固耐用。

去年，布雷卡为家人建造了第一座塑料瓶屋，他的想法此后被联合国难民署采用。之后，布雷卡和其他工人一起，又在该地区的其他几个难民营地建造了“塑料瓶房屋”。

这种用塑料瓶建造的房屋不仅能有效抵御了恶劣天气，还解决了另一个重要问题，那就是塑料废品回收利用。

据介绍，布雷卡建造“塑料房屋”的想法并不是第一例。此前在2014年，一个非盈利组织曾在厄瓜多尔建造出“塑料房屋”，2010年，阿根廷也有人用啤酒瓶建造了房子。