31results about How to "Does not affect whiteness" patented technology

The invention relates to a preparation method of superfine modified ground limestone. The preparation method of the superfine modified ground limestone comprises the following steps of: (1) steeping slurry; (2) grinding in a four-level wet-method grinding manner; (3) drying: carrying out spray drying on the slurry by using a spray drying device; and (4) modifying: grinding and dispersing the collected ground limestone powder by a dry method at the grinding rate of 1460r / min, and adding modifiers in the grinding process so as to obtain the superfine modified ground limestone. By using the four-level wet-method grinding manner and a method of modifying subjected to drying, the problem of waste of modifiers during liquid modification is solved, and the activating rate and whiteness of the product are improved.

The invention discloses a production method of microcrystalline mullite-type calcined kaolin, the obtained microcrystalline mullite-type calcined kaolin and applications thereof. 1) Fe 2 O 3 ≥0.4% high-speed iron coal gangue as raw material, adjusted to make Al in the raw material 2 O 3 ≥30%, 2) crush the raw materials obtained in step 1), and grind them to more than 100 meshes to obtain a mixed powder, 3) add water to the mixed powder and mix evenly to make a wet material, age, squeeze the mud to make a brick, and put it in the The kiln car is dried, and after drying, the kiln car enters a tunnel kiln for calcination at 800-1350° C. to obtain the microcrystalline mullite-type calcined kaolin. The calcined kaolin product prepared by the production method of microcrystalline mullite type calcined kaolin of the present invention has high whiteness, uniform chemical composition, stable microstructure, and contains a large amount of mullite microcrystals. It is a ceramic glaze, high-quality clay brick, The raw material of choice for lightweight mullite bricks and ceramic fiber wool.

The invention discloses a waterproof finishing agent and a use thereof. The waterproof finishing agent comprises, by weight, 10-20 parts of methanol, 40-60 parts of a fluorine-containing boronic acid derivative, 4-8 parts of sodium aliphatate, 5-10 parts of polyethylene wax emulsion, 4-8 parts of an organosilicon, 1-3 parts of a surfactant and 200 parts of water. The fluorine-containing boronic acid derivative is one of 2-trifluoromethylphenylboronic acid, 3-trifluoromethylphenylboronic acid, 4-trifluoromethylphenylboronic acid, 4-trifluoromethoxyphenylboronic acid, 3, 5-bis(trifluoromethyl) derivative and 3, 4, 5-trifluorophenylboronic acid. The fluorine-containing boronic acid derivative is used as a main raw material of the waterproof finishing agent. Through a common double-padding-double-dipping production technology and coordination complexation, a fabric is treated by the waterproof finishing agent. The treated fabric has good waterproofness and retains original fastness to washing and whiteness so that the waterproof finishing agent has a practical application value and a wide application prospect in the field with self-cleaning requirements.

The invention relates to a preparing method of using marble wastes to recycle heavy calcium powder. The preparing method comprises the steps of material selecting, cleaning, airing, crushing, screening through vibration, ball-milling and grading. The preparing method is simple in technology and convenient to operate, achieves recycling and reuse of the marble wastes so as to turn waste into wealth, saves investment cost and mineral resources, and is very environmentally friendly.

The invention relates to a powder grinding aid suitable for kaolin, particularly relates to a powder grinding aid suitable for kaolin ultrafine powder, and belongs to the technical field of grinding of kaolin ultrafine powder. The powder grinding aid is prepared from the following substances in parts by weight: 1-5 parts of polymeric alkylol amine, 1-10 parts of polyethylene glycol, 5-15 parts of polyacrylamide, 1-15 parts of sodium pyrophosphate and 20-50 parts of wollastonite in powder. The grinding aid disclosed by the invention is compounded by mineral raw materials and common chemical materials, so that the powder grinding aid is sufficient in raw material source, available, low in toxicity, non-volatile, simple to produce and process, and low in cost; a kaolin grinding production enterprise utilizes the powder grinding aid disclosed by the invention; and the operation is simple and convenient. According to the powder grinding aid disclosed by the invention, the grinding efficiency is improved; the energy consumption is reduced; the surface energy of the kaolin ultrafine powder can also be effectively lowered; particle aggregation is avoided; the fineness of the power grinding aid is improved; the liquidity of the powder grinding aid is improved; and the whiteness of kaolin is not affected.

The invention relates to a high-performance polyamide-based dyeable conductive fiber and a preparation method thereof, belonging to the field of composite conductive fibers. The fiber provided by the invention employs a three-layer concentric circle structure which comprises three components, i.e., a highly-conductive medium carbon black component, a shielding composite substance component and a white conductive component in a mass ratio of 5-30%: 20-30%: 50-65%, wherein an inner layer, a middle layer and an outer layer are the highly-conductive medium carbon black component, the shielding composite substance component and the white conductive component respectively, or are the highly-conductive medium carbon black component, the white conductive component and the shielding composite substance component respectively. The fiber provided by the invention has improved conductivity and maintains original whiteness and dyeability. According to the invention, a metal oxide and a conductive intrinsic polymer are blended and granulated during preparation of white dyeable conductive master batch, so the characteristics of the two white conductive additive are integrated; and polyamide carrier resin is added to adjust a fusion index, so fluidity is improved, and the conductivity of the eventually prepared fiber is improved.

The invention relates to the field of textiles, and discloses a method for realizing linear regulation of comfort and anti-bacterial adhesion by crosslinking temperature-sensitive microgels on the surface of fabrics, comprising the following steps: 1) using temperature-sensitive microgels, crosslinking agents, catalysts and solvents 2) heat up and bake the treated textile to generate crosslinking reaction. The invention realizes the function of linear regulation of textile comfort and anti-bacterial adhesion, and is convenient to operate without affecting the original whiteness and flexibility of textiles; The reactive functional groups contained in the body and the reactive functional groups on the surface of the textile react with the carboxyl group contained in the crosslinking agent to form a covalent bond, and fix the temperature-sensitive microgel on the surface of the textile, which overcomes the general smart temperature-regulating textiles that only "open" or "off" function, so that the pores of the microgel film on the surface of the textile after finishing gradually increase with the increase of temperature and the surface of the fabric always maintains the hydrophilic property, thus realizing the function of linear regulation of textile comfort and anti-bacterial adhesion .