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In the paper, the orientation behaviors of polyurethane film were investigated by means of infrared dichroism measurement.

采用紅外二向色性法對聚四氫呋喃醚二醇/ 4 亚洲天堂网a，4′-二苯基甲烷二異氰酸酯系聚氨酯薄膜樣品的拉伸取向行為進(jìn)行了研究，結(jié)果表明亚洲色图综合区，隨著拉伸倍率的增大久久一级无码A片，CH2 角基團(tuán)發(fā)生取向。

However, when occurring in Mesozoic remelted granite, pyrite is featured mainly by high gold content in pentagonal dodecahedron and in its complex; low content in cubic pyrite; Au/Ag ratio between 1-2; both N and P types of pyrite present in most deposits and P type only in a few deposits.

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Polybenzimidazolewas modified by means of blending with a novel heat-resistant resin methyl-di-phenylacetylene-silane,by which the meltability of PBI was impoved,and the time of the melting stage of PBI was prolonged,resulted in improvement of the processability of PBI,meanwhile the heat resistance of PBI did not decline,and the water absorption of PBI was lowered.

以一種新型耐高溫樹脂聚甲基二苯乙炔基硅烷通過共混改性聚苯并咪唑樹脂男人的天堂精品视频网站，提高了PBI樹脂的熔融性并延長了樹脂熔融狀態(tài)的時(shí)間全免费A级毛片免费看无码软件，改善了PBI樹脂的加工性能。同時(shí)PBI優(yōu)良的耐熱性保持不變91中文字幕永久在线看，并降低了樹脂吸水率乱伦视频无码一级。

The results indicated that the UV coatings made from epoxy acrylate resin/TPGDA monomer by the weight ratio of 80/20, and 3% dosage of benzil dimethyl ketal photoinitiator had an excellent films properties such as hardness, tensile strength, gloss and weatherability, while it possessed a poor impact resistance and adhesion of films.

試驗(yàn)結(jié)果發(fā)現(xiàn)，以預(yù)聚合體/單體比例為80/20av福利资源福利、單體種類為二丙烯酸三丙烯乙二醇酯啪无码高请不卡在线观看、光引發(fā)劑Benzil dimethyl ketal添加量為3%調(diào)配而成之UV涂料，其涂膜硬度午夜a一级毛片视频网站在线免费观看、拉伸強(qiáng)度欧美精品手机在线一级播放、光澤度及耐候性等性質(zhì)優(yōu)良，但涂膜耐沖擊性那里有黄色毛片看、附著性不佳亚洲欧美日韩在线一区二区三区。

Effects of vapour of organic solvents on the poly- was studied by the differential scanning calorimetry.

用差示掃描量熱研究了幾種有機(jī)溶劑蒸氣對聚對苯二甲酸乙二酯的作用，表明可分為反應(yīng)性的和非反應(yīng)性的兩種欧美h福利网站。

Polyethylene glycol ethers of alkyl alcohols having the general formula CH3(CH2)xCH2(OCH2CH2)nOH wherein x is 8 to 20 (of which ceteareth-20, steareth-20 and steareth-100 are preferred), poloxamer 185, poloxamer 407, N,N-dimethyl dodecylamine N-oxide, and mixtures thereof, are employed to increase follicular delivery and/or follicular residence time of certain water soluble ornithine decarboxylase inhibitors of which 2-2,5-diamino pentanoic acid and its pharmaceutically acceptable salts, hydrates, optical enantiomers and racemic mixture are preferred.

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As one of aliphatic polyether-ester, poly (p-dioxanone) shows not only excellent biodegradability, biocompatibility and bio-absorbability, but also good flexility, tensile strength and knot strength. The PPDO has already been used in some biomedical materials such as suture, bone repair device and may have potential application in peroral or parenteral drug delivery systems.

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This flocculating agent has good water solubility. Dissolving rate is quicker than traditional synthesized flocculating agent such as poly-propionamide. It overcomes flaws of slow dissolving rate and inconvenient field using of traditional poly-propionamide; because of copolymerizing with natural product Amorphophallus konjac, it has advantage of strong natural product biodegradation. After be used, it do not cause secondary pollution. It can be used in process of city domestic sewage and industrial sewage.

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PET; compatilizer; arc resistance; flame retardance

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