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139results about How to "Good blending" patented technology

Preparation method and application of aqueous polyurethane latex as vacuum plastic-absorption adhesive

The invention relates to a preparation method and application of aqueous polyurethane latex as a vacuum plastic-absorption adhesive in the field of fine polymer materials. The preparation method comprises the following steps of: (1) making polyester polyol and isocyanate as raw materials react in the presence of a catalyst to obtain a prepolymer, wherein the molar ratio of the polyester polyol tothe isocyanate is 2-2.35:1, and the catalyst accounts for 0.01% of the total weight of the prepolymer; (2) adding dimethylolpropionic acid containing a hydrophilic group compound, simultaneously adding N-methylpyrrolidone as a cosolvent and making the mixture to react to obtain a product, wherein the addition of the cosolvent accounts for 1%-3% of the total weight of the latex; (3) adding triethylamine for neutralization reaction, adding deionized water, and then emulsifying; and (4) adding an amine chain expander and then dispersing to obtain the aqueous polyurethane latex. The product prepared in the method has the advantages of low cost, stable viscosity, moderate activation temperature, good blending performance and better high-temperature resistance and bonding strength and can be applied as the vacuum plastic-absorption adhesive.
Owner:上海英诺威化学有限公司 +1

Efficient watering and fertilization device for agriculture

The invention discloses an efficient watering and fertilization device for agriculture. The device comprises a base plate, a box, a first motor, a disc, a movable rod, a fertilizer hopper, a crushingplate, a first spring, a first haulage rope, a second haulage rope, a first tooth bar, a second spring, a first rotating shaft, a first gear, an agitator arm, spraying mechanisms and a fertilization mechanism. With the arrangement of the first motor, the disc, the movable rod, the first haulage rope and the crushing plate, a solid granular fertilizer is repeatedly crushed, and then the solid fertilizer is better dissolved in water and utilization rate of the fertilizer is raised. With the arrangement of the second haulage rope, the first tooth bar, the first gear, the second spring, the firstrotating shaft and the agitator arm for cooperation, the agitator arm rotates in the forward and reverse directions such that water and the fertilizer are better integrated and fertilizer water preparation efficiency is raised. With the arrangement of two spraying mechanisms, continuous spraying is realized. With the arrangement of the fertilization mechanism, a nozzle can rotate a certain angle in both forward and reverse directions such that spraying range is widened, fertilization efficiency is raised and labor of workers is reduced.
Owner:临泉县生产力促进中心

BOPET (Biaxial oriented Polyethylene Terephthalate) ultraviolet shielding master batch and manufacturing method thereof

The invention relates to BOPET (Biaxial oriented Polyethylene Terephthalate) ultraviolet shielding master batch. The BOPET ultraviolet shielding master batch is prepared from the following raw materials in parts by weight: 70 to 90 parts of polyethylene terephthalate, 1 to 5 parts of a dispersant, 5 to 20 parts of a coloring agent, 10 to 20 parts of a nano-grade ultraviolet absorbent and 5 to 10 parts of meta-aramid fibers. According to the BOPET ultraviolet shielding master batch provided by the invention, the coloring agent is ground through a high-speed grinding machine; the aramid fibers are added and the nano-grade ultraviolet absorbent is matched, so that a dispersion effect of the coloring agent and the ultraviolet absorbent is good; meanwhile, the fibers are also dispersed well and have no tangling phenomenon; the filtering performance is good and a BOPET ultraviolet shielding film prepared from the BOPET ultraviolet shielding master batch has a ultraviolet shielding rejection rate reaching 100 percent, and the film haze is less than 2; the master batch is used for producing the BOPET ultraviolet shielding film; a net replacing period is long, and film-forming performance is good. The invention further relates to a preparation method of the BOPET ultraviolet shielding master batch.
Owner:广东彩艳股份有限公司

Injection-moldable conductive heat-conduction modified fluoroplastic material and preparation method and application thereof

The invention relates to an injection-moldable conductive heat-conduction modified fluoroplastic material which is prepared from the following components in parts by weight: 50 to 100 parts of conductive heat-conduction modified basic fluoroplastic, 10 to 30 parts of an auxiliary material, 0 to 20 parts of a filling material and 5 to 30 parts of a processing auxiliary. The conductive heat conduction modified basic fluoroplastic is formed by performing in-situ polymerization on tetrafluoroethylene, perfluoro propyl vinyl ether, a conductive heat-conduction medium material and the auxiliary. The injection-moldable conductive heat-conduction modified fluoroplastic material has the beneficial effects that according to the prepared fluoroplastic, the conductive heat-conduction medium material is added in the polymerization process; by adoption of an in-situ polymerization technology, the volume resistivity (about 103 to 104) of the material is greatly reduced, and the heat conduction performance is improved (the heat conduction coefficient is greater than 3W/(m.K)), so that the injection-moldable conductive heat-conduction modified fluoroplastic material is higher in conductivity and heat conduction performance on the basis of chemical resistance and aging resistance. The technology is simple, the production efficiency is high, and no pollution waste is produced.
Owner:青岛科凯达橡塑有限公司

Gutta-percha/natural latex sponge product and preparation method thereof

ActiveCN110437510ASignificant technological progressHigh total solid contentFoaming agentGutta-percha
The invention provides a gutta-percha/natural latex sponge product. The gutta-percha/natural latex sponge product is prepared from the following components: gutta-percha emulsion, natural latex, a vulcanizing agent, an active agent, an accelerant, an antiager, a filler, a stabilizer, a PH value adjust, a gelatinizer, a foaming agent, a foam stabilizer, and a blowing agent in proportion, and the gutta-percha emulsion and the natural latex are correspondingly concentration emulsion. A preparation method of the gutta-percha/natural latex sponge product comprises the steps that first, the gutta-percha emulsion and the natural latex are mixed in proportion, deammoniation is conducted through a simultaneous ongoing method of mechanical stirring and air drafting, thenvarious kinds of powder typeauxiliaries and emulsifying oil auxiliaries which are grinded into dispersoid are added into a mixture latex material, after ripening, air is inflated under the mechanical stirring, foam is generatedto expand foam, after foaming, the foam is solidified with the gelatinizer, after vulcanization, washing and dewatering and drying of the solidified foam, the gutta-percha/natural latex sponge is obtained. According to the gutta-percha/natural latex sponge product and the preparation method thereof, successfully development of the gutta-percha/natural latex sponge product expands application prospects of gutta-percha, and promotes the technical progress of the gutta-percha.
Owner:CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST
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