Chinese Academy of Sciences

Aiping Hui

Bin Mu

Yuru Kang

Aiqin Wang

Qin Hua Wang

Wenbo Wang

Fangfang Yang

Xiaowen Wang

Yongfeng Zhu

Li Zong

Aiqing Wang

A method for preparing a natural antibacterial agent by utilizing attapulgite pore channels to immobilize plant essential oil. Natural antibacterial agent plant essential oil is sprayed on the surface of attapulgite powder while stirring, after mechanically grinding the materials, a liquid glycerol monolaurate and quaternary ammonium salt aqueous solution are sequentially sprayed, after uniformly stirring and mixing the materials, a mixture is extruded by using an extruder, and drying, crushing and packaging are performed.

Method for preparing natural antibacterial agent by immobilizing plant essential oil in attapulgite pore channels

The present disclosure relates to a method for preparation of a high temperature-resistant bismuth yellow pigment. The method comprises: mixing an oxide which served as a matrix and dopan with a bismuth source, a vanadium source, or a molybdenum source, and then placing the mixture into a mill for grinding to obtain a precursor; further calcining and crushing the precursor to obtain the high temperature-resistant bismuth yellow pigment powder. The bismuth yellow pigment has a bright color, a b* value greater than 90, a stable performance, and a high heat-resistance above 800° C. The method is environmentally friendly without waste, and reaction conditions are simple. Doping of BiVOcrystal lattices by incorporation of oxides can be achieved, so that the particle size and distribution of the bismuth yellow pigment can be effectively controlled while the color performance of the bismuth yellow pigment is greatly improved.

Method for mechanochemical preparation of high temperature-resistant bismuth yellow pigment

The disclosure relates to a method for mechanochemical preparation of an iron red pigment, which comprise steps: mixing a clay mineral, a soluble iron source and an alkali source in a mill for grinding to obtain a precursor, wherein the ratio of ball to material is controlled at 20-50, the grinding speed is 300-1200 rpm, and the grinding time is 30-360 min; and calcining the precursor at 500-900&#xb0; C. for 30-120 min to obtain a high-performance iron oxide red/clay mineral hybrid pigment. The iron oxide red/clay mineral hybrid pigment has a bright and beautiful color, high-temperature and acid resistance, and can satisfy requirements for high-performance iron oxide red pigments in fields of paints, inks, ceramics, anti-corrosive coatings, etc. Furthermore the method is a simple process without waste that is environmentally friendly and suitable for industrialized production, thus it is expected to replace existing processes of iron oxide red pigments.

Method for mechanochemical preparation of high-performance iron red/clay mineral hybrid pigment

Disclosed is a method for preparing an attapulgite-based pH-responsive antibacterial material, including: directly spraying a natural aldehyde-based antibacterial agent onto an attapulgite powder under stirring, and constantly stirring the attapulgite powder for 20-30 min; grinding the attapulgite powder in a ball mill for 30-60 min to obtain a ground attapulgite powder; placing the ground attapulgite powder in a stirred tank, and spraying a chitosan-citric acid aqueous solution onto the ground attapulgite powder; after spraying, constantly stirring the ground attapulgite powder for 30-120 min; and finally drying the ground attapulgite powder to obtain a dried attapulgite powder, sieving the dried attapulgite powder to obtain a sieved attapulgite powder, and packaging the sieved attapulgite powder to obtain the antibacterial material.

Method for preparation of attapulgite-based pH-responsive antibacterial material

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Gansu, China

Aiping Hui