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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 6. Отображено 6.
05-08-2009 дата публикации

Preparation of linear bisphenol A phenolic resin

Номер: CN0101497683A
Автор: ZHANG HUI, TANG GUANGBIN, XIAO HUA, REN LIUBO, DENG HAIBO, WANG XINLONG, HUI ZHANG, GUANGBIN TANG, HUA XIAO, LIUBO REN, HAIBO DENG, XINLONG WANG
Принадлежит:

The invention provides a preparation method of bisphenol A novolac phenolic resin, which comprises the following steps: bisphenol A is added in solvent with the weight being 25-100 percent of the weight of the bisphenol A, acidic catalyst with the weight being 0.7 to 2 percent of the weight of the bisphenol A, formaldehyde is continuously added at the temperature of 70-110 DEG C for 0.25-2.5 hours, all reactants react for 1-10 hour(s) at the temperature of 70-110 DEG C, and the reactants are heated and depressurized to remove the solvent, thus the bisphenol A novolac phenolic resin is obtained, wherein the mol ratio of formaldehyde and the bisphenol A is 0.3:1 to 3:1. The prepared bisphenol A novolac phenolic resin has the residual quantity of the bisphenol A of smaller than 15 percent, the softening temperature of 100-125 DEG C, and the dissolution iscosity of 63-67 percent of butanone solvent at 25 DEG C of 4000-6000 Pa.s. The invention has excellent physical property under the condition ...

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Номер записи: 1
23-03-2011 дата публикации

Method for preparing bisphenol F

Номер: CN0101987812A
Автор: GUANGBIN TANG, LIUBO REN, JUNFEI DUAN, JINGJING LI, LIJING XIAO, TANG GUANGBIN, REN LIUBO, DUAN JUNFEI, LI JINGJING, XIAO LIJING
Принадлежит:

The invention provides a method for preparing bisphenol F, which comprises the following steps of: using formaldehyde and phenol as raw materials according to a formaldehyde-to-phenol mol ratio of 15 to 20:1; adding catalysts, wherein the mass ratio of the catalysts to the formaldehyde is 0.15 to 0.3:1; reacting for 4 to 6 hours at 80 to 110 DEG C; filtering and covering the catalysts after the standing delamination; adding solvents of 1 to 5 times of the mass of the bisphenol F for dissolution after unreacted phenol is recovered through pressure reduction; and obtaining the bisphenol F through the separation after stirring and cooling. The method has the advantages that the separation and the purification of products are easy, the purity of target products is higher, the catalysts have environment protection effect and can be easily separated, and the solvents used for recrystallization can be cyclically used. The method has the advantages of simple process and low energy consumption.

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Номер записи: 2
26-05-2010 дата публикации

Special material of epoxy resin for wind power generation

Номер: CN0101712748A
Автор: JUNFEI DUAN, KUIXIANG HU, JINGJING LI, YUEHUI LIU, LIUBO REN, GUANGBIN TANG, LIN YU, HUI ZHANG, DUAN JUNFEI, HU KUIXIANG, LI JINGJING, LIU YUEHUI, REN LIUBO, TANG GUANGBIN, YU LIN, ZHANG HUI
Принадлежит:

The invention provides a special material of an epoxy resin for wind power generation, which consists of the following components in part by weight: 5 to 20 parts of epoxy resin, 5 to 20 parts of diluent, and 25 to 45 parts of curing agent. At normal temperature, the special material of the epoxy resin for wind power generation has the advantages of long using time, low viscosity and good permeability, and can bring convenience to the production of wind power generation blades; and at an intermediate temperature, the special material of the epoxy resin for wind power generation has a short using time and can improve production efficiency.

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Номер записи: 3
23-11-2011 дата публикации

Method for detecting content of alpha-dihydric alcohol in epoxy resin

Номер: CN0102253031A
Автор: ZHOU JIANHONG, DENG HAIBO, REN LIUBO, CHENG PU, ZHOU JIANGMING, GUO JUAN, BAI NAN, ZHENG XUELING, JIANHONG ZHOU, HAIBO DENG, LIUBO REN, PU CHENG, JIANGMING ZHOU, JUAN GUO, NAN BAI, XUELING ZHENG
Принадлежит:

The invention provides a method for detecting the content of alpha-dihydric alcohol in an epoxy resin. The content of alpha-dihydric alcohol is effectively and quantificationally detected through generating iodic acid through reacting alpha-dihydric alcohol with periodic acid, generating benzyltrimethylammonium dichloroiodate through reacting iodic acid with benzyltrimethylamine, and titrating with indirect iodimetry. Simultaneously a certain mass of glycol is weighed and is subjected to confirmatory experiments with the same method, and the theoretical value is found to be basically consistent with the practical value, so the feasibility of the method is confirmed. The method has an important guiding significance for controlling the technical production of resins.

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Номер записи: 4
21-09-2011 дата публикации

Preparation method of nonionic waterborne epoxy curing agent

Номер: CN0102190800A
Автор: GUANGBIN TANG, TIANBIN REN, JINGJING LI, LIUBO REN, TANG GUANGBIN, REN TIANBIN, LI JINGJING, REN LIUBO
Принадлежит:

The invention provides a preparation method of a nonionic waterborne epoxy curing agent, which comprises the following steps: (1) heating and dissolving epoxy resin and polyether polyol, evenly mixing, dropwisely adding catalyst at 50-130 DEG C to carry out polymerization reaction, and after the reaction finishes, dissolving the product in the epoxy resin and solvent to prepare a mixed solution; (2) while stirring, dropwisely adding a monoepoxy compound into basic amine, and reacting at 10-100 DEG C; (3) dropwisely adding the mixed solution in the step (1) into the reaction product in the step (2) at 30-120 DEG C, and enabling the reaction at 10-90 DEG C; and after the reaction finishes, diluting by adding water until the solid content reaches 30-80%, thereby obtaining the nonionic waterborne epoxy curing agent. The method has the advantages of simple technique and mild reaction conditions; the adopted cosolvent has the advantages of low toxicity or no toxicity, and low VOC (volatile organic ...

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Номер записи: 5
22-12-2010 дата публикации

Method for decolorizing 3-chloropropene

Номер: CN0101921171A
Автор: ZHOU JIANGMING, TANG GUANGBIN, REN LIUBO, LIU SHUAI, CHENG PU, LI XIA, JIANGMING ZHOU, GUANGBIN TANG, LIUBO REN, SHUAI LIU, PU CHENG, XIA LI
Принадлежит:

The invention provides a method for decolorizing 3-chloropropene. In the method, a decolorizing agent is filled in a container, and the 3-chloropropene of which the flow rate is 3 to 10 mass times that of the decolorizing agent is introduced to the container containing the decolorizing agent. In the container, the decolorizing agent absorbs the nonferrous metal ions in the 3-chloropropene chemically and physically to remove the nonferrous impurities from the 3-chloropropene. The method avoids introducing any new impurity into the 3-chloropropene and influencing product quality.

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Номер записи: 6