摘要:
A method for preparing a rubber compound comprising at least one first mixing step in which at least part of a cross- linkable polymer base is mixed at least with a reactive reinforcing filler, a dendrimer functionalized with polar groups adapted to interact with the reactive reinforcing filler and a nucleophile agent; and a subsequent mixing step in which the compound being prepared is mixed with a vulcanization system.
摘要:
A masterbatch composition of elastomer and from 20 to 100 parts per hundred parts elastomer of fibrous micropulp wherein the micropulp has fibers with a volume weighted average fiber length of from 20 to 200 micrometers as measured by laser diffraction, a relative specific surface area of from 30 to 600 square meter per gram as measured by nuclear magnetic resonance and the fibers selected from the group consisting of aromatic polyamide, aromatic copolyamide, polyacrylonitrile and polyazole.
摘要:
A composition comprising: a) a vinyl poly(phenylene) ether; b) a styrene-butadiene copolymer; c) optionally a vinyl-benzyl ether of napthol novolac; and d) a free radical initiator, a method for making the composition, and end uses for the composition are disclosed.
摘要:
A composition comprising: a) a vinyl poly(phenylene) ether; b) a styrene-butadiene copolymer; c) optionally a vinyl-benzyl ether of napthol novolac; and d) a free radical initiator, a method for making the composition, and end uses for the composition are disclosed.
摘要:
다수의 발포 셀들을 구비하며 상기 발포 셀들 중 폐쇄 셀들(closed cells)이 50% 이상인 고분자 발포체를 포함하는 고분자 가공용 퍼징제가 제공된다. 또한 제1 고분자 조성물을 가소화 또는 용융 가능한 온도 및 압력 조건에서 가공기기로 성형 후 상기 가공기기로부터 추출하여 성형품을 얻는 단계; 상기 제1 고분자 조성물의 추출 후 고분자 가공용 퍼징제를 상기 가공기기에 투입하여 상기 고분자 가공용 퍼징제가 상기 가공기기의 내벽과 스크류에 밀착되도록 하는 단계; 및 상기 가공 기기 내에서 팽창한 상기 고분자 가공용 퍼징제가 상기 가공기기로 가공함에 따라 상기 내벽 또는 상기 스크류에 잔존하는 상기 제1 고분자 조성물과 함께 상기 가공기기 외부로 추출되는 단계를 포함하되, 상기 가분자 가공용 퍼징제는 상기 고분자 발포체를 포함하는 퍼징 방법이 제공된다.
摘要:
The present invention relates to a method for producing fiber or fiber compositions comprising unsaturated bonds. These fibers eliminate dipping and curing process in producing fiber reinforced rubber and the need for the chemicals used during dipping process. These novel yarns, thus, decrease the costs of producing fiber reinforced rubber. The objective of the present invention is to produce fiber comprising unsaturated bonds which do not require treatment with RFL solution and activating chemicals in the fiber reinforced rubber materials. Reinforced rubber production will have lower production, processing and investment costs and will be more environmental friendly since RFL solution and activating chemicals are not used. Fibers with good fatigue and elongation properties can be produced without needing high twisting levels since the unsaturated fibers have higher elongation than the saturated fibers.
摘要:
A functionalized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds in an aqueous suspension to allow polyamide to load into the polymer latex or to allow polyurethane to load into the polymer latex without disturbing silica-polymer bonds. Polymer-silica reinforced masterbatches are prepared by addition of the functionalized silica slurry using the formed functionalized silica having two different silanes, one for coupling to polyamide or polyurethane and the polymer, the other for connecting directly to the polymer.