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丁二烯橡膠行業的技術發展趨勢

Mar 14, 2019

近年來,在國內衛生廠的集中生產之後,供過於求的人變得越來越明顯。自今年年初以來,一些石化植物一直處於關閉狀態,總體運營速率波動在40%至50%之間。此外,受內部和外部問題影響的下游輪胎企業,市場也進入了改組時期,對丁基橡膠的需求減少了丁基橡膠的需求,也不斷提高生產競爭,也不斷提高腸道化和促進腸道的競爭。

1。丁二烯橡膠

丁二烯橡膠通常被稱為富含順式的丁二烯橡膠,丁二烯橡膠作為原材料,通過鎳萘型作為催化劑,由溶液聚合產生的催化劑,合成,較早地化為一般合成橡膠品種的成熟技術,並且具有極好的耐磨性,高彈性,高度穩定性,高溫,高溫,高溫,高溫,高溫,高溫,高溫,高溫,高溫,高溫,高溫,高溫,效果,高溫,效果均勻,均具有良好的效果。輪胎胎面,側輪胎主體的製造,也用於製造橡膠膠帶,橡膠軟管和其他工業產品,但其特性是低撕裂強度,濕滑的性不好,原始橡膠的冷流現象。

Structure of rare earth butadiene rubber content is higher, narrow molecular weight distribution, do not contain branched and gel, therefore has the environmental security, convenient processing, using the production of rubber mixing rubber () have a higher fatigue resistance and crack growth and cutting resistance, wear resistance, is used in the manufacture of green tire sidewall and the ideal raw material, made of the tire rolling resistance lower, at the same time can reduce tire wear.


稀土丁二烯橡膠催化系統

According to the catalytic system, the technologies used by the world's shunding rubber production companies can be divided into five major systems: nickel, cobalt, lithium, titanium, and rare earth (neodymium).Titanium, nickel and cobalt system is the mainstream in elimination trend, rare earth system in the development stage, lithium is butadiene rubber is mainly used for production, impact polystyrene modification for the nickel butadiene is our country in the 1960 s the successful development of highly active nickel catalysts, respectively in 1965 in jinzhou, lanzhou, began to industrialized production, butadiene rubber production of new technological achievements in 1985, special-class award of national scientific and technological progress, after half a century of several generations efforts, China's nickel production technology and nickel butadiene product quality in the world advanced level.

鎳催化系統的特徵:

1。鎳催化系統是一個多組分系統。催化劑的劑量比,進食模式和衰老模式不僅會影響催化系統的活性,還會影響聚合物的分子量。

2,鎳催化劑系統的穩定性,聚合溫度,以適應較大的範圍,反應溫度以上的溫度超過120度,系統仍未失活,具有良好的溫度抗性。

3。鎳催化系統具有良好的方向性,並且受催化劑量和單體濃度的影響較小。

4。鎳催化的系統在聚合過程中導致丁二烯的大量鏈傳遞,從而導致鏈終止。

稀土催化系統的聚合特徵:

1。飽和烴己烷用作溶劑,有利於環境保護;

2。高單體轉化率,甚至達到100%;

3。產生交聯反應並產生凝膠並不容易。


稀土丁二烯橡膠的特性

稀土催化系統產生的丁二烯橡膠具有較高的分子鏈規則性和最高的摩爾尼粘度,這表明分子鏈具有一定量的長鏈分支,表明線性較高。另外,鎳系列的分子量分佈比稀土系列的分子分佈窄。

By comparison, the rare earth catalyzed polymerization of butadiene rubber has a high cis structure, less branched, no gel, so it has a good linear structure, known as high dimensional regularity of butadiene rubber.It can produce strong crystallization under the action of stretching, that is, with "stress crystallization ability, which gives rare earth butadiene rubber high self-viscosity, good tensile properties and advantages of abrasion resistance和抗疲勞性,是製造高性能輪胎的第一個橡膠。

 

稀土丁二烯橡膠的發展趨勢

日本合成橡膠公司的研究發現,稀土橡膠是未來的發展趨勢。與高速,安全性,節能,節能,環境保護等高性能輪胎相符,這是增長最快的BR品種,歐洲和美國國家的輪胎方面,因此能夠保護和環境保護範圍,安全性和環境保護措施,以實用的態度和範圍的範圍,並具有較大的環境範圍。迫在眉睫的行業政策會全面地鼓勵綠色輪胎的發展,並將逐漸建立進入和向後產品消除機制的行業障礙,綠輪胎輪胎行業已成為發展趨勢,隨著生產技術的持續改進和產品需求的不斷提高,其他家用Seibel Butadiene butadiene rubber rubber rascautical,稀有的稀有地球,稀有的butadiene butadiene rubber of Properies of the Offers exterprises of the Enterprises。

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