硅烯

Poly silica hybrids were prepared through polymerization, condensation and sol gel processes of the mixture of methyl methacrylate, poly and a small amount of coupling agent methacryloxylpropyl trimethoxy siliane in tetrahydrofuran.

采用溶胶-凝胶技术，以硅酸钠为原料制备聚硅酸/四氢呋喃溶胶，再与甲基丙烯酸甲酯及少许偶联剂甲基丙烯酰氧丙基三甲氧基硅烷(MPTMS 混合，经聚合、缩合和溶胶-凝胶过程制备了有机/无机两相间有— C—Si—O—键的杂化材料——聚甲基丙烯酸甲酯/二氧化硅(PMMA/Si O2 )。

The results showed that the β zeolite had better activities of isomerization and aromatization,and the cracking and aromatizing activities increased with the reaction temperature increasing,but the yield of isomerized olefin s decreased.

结果表明，β沸石具有较好的异构化和芳构化能力，并随反应温度的升高，其裂解和芳构化能力逐渐增强，异构烃产率逐渐降低；工业低硅ZSM-5型分子筛的裂化活性较强；催化裂化汽油经改质后其烯烃含量均有所降低，且辛烷值基本不变。

Part Ⅲ. Reactions of fluoroalkanesulfonyl azides with enoxysilanes.

第三部分，氟烷基磺酰叠氮与一些烯基硅醚的反应。

The main products include 2715 PVC fibred-glass tubing, self-extinguishing silicone tube, Chatham acid ester glass tube, silicone rubber paint tube glass, PVC Casing Series(hardy tube, tube migration-resistant, non-toxic PE pipe, pipe stripes), plastic casing fibred outside silicone rubber, plastic outer casing fibred silicone rubber, polyester film insulating paper, fibred paper.

主要产品有2715聚氯乙烯玻璃纤维套管、硅树脂自熄管、内烯酸酯玻璃漆管、硅橡胶玻璃漆管、PVC套管系列：耐寒管，耐迁移管，无毒PE管，条纹管，硅橡胶内胶外纤套管、硅橡胶内纤外胶套管、聚酯薄膜绝缘纸、纤维纸。

Series of crosslinked polymers containing POSS were synthesized in this thesis. The main contents include three parts as follows:(1) The preparation of different POSS molecules containing multiple functionalgroups and the development of crosslinked polymers containing POSS were reviewed in detail.

2合成了一种多功能团的POSS分子(T_8H_8)及四种不同长度的双烯功能团有机小分子，这些有机小分子可以通过硅氢化反应与POSS形成交联聚合物，在聚合物中作为连接链将POSS分子连接起来。

The basic principle of the toughening and modifying on bismaleimide resin was introduced, the characteristics and the modifying effects of the toughening and modifying with thermoplastic resin, the combination of aromatic diamine and epoxy resin, organic silicone, allyl compounds, cyanate ester resin, the blends of three-dimensional braided carbon and Kevlar fabrics and so on were discussed.

介绍双马来酰亚胺树脂增韧改性的基本原理，论述了热塑性树脂增韧改性、芳香族二胺和环氧树脂相结合增韧改性、有机硅增韧改性、烯丙基系列化合物增韧改性、氰酸酯树脂增韧改性、三维编织碳纤维和凯夫拉纤维混合增韧改性等方法的特点与改性效果。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。