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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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Применить Всего найдено 4. Отображено 4.
05-05-2023 дата публикации

Nano-cellulose reinforced food packaging paper and preparation method thereof

Номер: CN116065424A
Автор: HU DINGGEN, GUO XIAOFENG, MA LONGHU, YAO HUA, ZHANG LU, JIN YIYUN
Принадлежит:

The invention provides nano-cellulose reinforced food packaging paper and a preparation method thereof. The preparation method comprises the following steps: S1, preparing nano-cellulose particles; s2, modifying the nano cellulose; s3, cross-linking of the nano cellulose; s4, preparing a surface sizing solution; s5, preparation of the nano-cellulose reinforced food packaging paper. The nano-cellulose reinforced food packaging paper and the preparation method thereof have the advantages that the nano-cellulose reinforced food packaging paper is green and environmentally friendly, and the prepared paper is high in strength and good in waterproof and oil-proof performance.

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Номер записи: 1
23-06-2023 дата публикации

High-water-resistance food packaging base paper

Номер: CN116289328A
Автор: HU DINGGEN, YANG GANG, LIANG CHENG, CHEN XU, YAO HUA, LU PEIJING
Принадлежит:

The invention provides high-water-resistance food packaging base paper which comprises a surface pulp layer and a bottom pulp layer, and the surface pulp layer comprises the following raw materials in parts by weight: 40-60 parts of wood pulp; 20 to 30 parts of bast pulp; 3-8 parts of composite water-resistant fiber; 3-5 parts of a wet strength agent; 1-3 parts of a dispersant; 0.5-2 parts of a hydrophobic modifier; 0.2 to 0.5 part of a defoaming agent; 2-5 parts of liquid paraffin; 0.01 to 0.02 part of a polysaccharide compound; 0.5 to 1 part of stearic acid; 0.5 to 2 parts of layered silicate; the high-water-resistance food packaging base paper disclosed by the invention has the advantages of being good in water resistance, simple to prepare, green, healthy and environment-friendly.

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Номер записи: 2
23-06-2023 дата публикации

Degradable straw body paper and manufacturing method thereof

Номер: CN116289293A
Автор: HU DINGGEN, YANG GANG, GUO XIAOFENG, YAO HUA
Принадлежит:

The invention discloses degradable straw body paper and a manufacturing method thereof, belongs to the technical field of body paper preparation, and particularly relates to the degradable straw body paper which is prepared by adding a bagasse pulp A pulp board into distilled water to prepare pulp and then preparing the pulp under the action of various functional agents which at least comprise an oil-proof agent, a waterproof agent and a retention aid. The functional agent further comprises a nano cellulose-polyethylene glycol compound or a polylactic acid compound or a sizing solution. The degradable straw body paper prepared by the preparation method disclosed by the invention is good in tensile strength, good in tearability and good in degradation performance, the tensile strength of the obtained degradable straw body paper is 1.8 KN/m or above, the tearability is 400 mN or above, and the degradation loss rate is 6.5% or above.

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Номер записи: 3
28-04-2023 дата публикации

Preparation method of natural-color high-stiffness straw base paper

Номер: CN116024846A
Автор: YANG GANG, HU DINGGEN, CHEN JIANBIN, GUO XIAOFENG
Принадлежит:

The invention discloses a preparation method of natural-color high-stiffness straw body paper. Belongs to the technical field of papermaking. The preparation method comprises the following steps: providing natural-color needlebush; pulping the natural color softwood to obtain wood pulp liquid; adding a wet strength agent and an inorganic filler into the wood pulp liquid, and then carrying out the procedures of net forming, squeezing, drying, calendaring and curling through a multi-cylinder fourdrinier machine, so as to obtain the straw body paper. At least one inorganic filler of kaolin, light calcium carbonate, heavy calcium carbonate, talcum powder and modified talcum powder is added into the straw body paper; the activation rate of the modified talcum powder is higher than 80%; the tightness of the straw body paper is 0.70-0.85 g/m < 3 >, and the water absorption is 25-40 g/m < 2 >. The straw body paper prepared by the invention has relatively high tightness and stiffness and excellent ...

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Номер записи: 4