39results about How to "Does not increase viscosity" patented technology

The invention relates to a method for preparing siloxane-modified thermoplastic material, which comprises the following steps: adding 100 weight parts of thermoplastic resin, 40-80 parts of high molecular weight siloxane, 20-40 parts of silicon resin, and 5-10 parts of compatibilizer into a blender, blending for 3-4min, then adding 10-25 weight parts of cross-linking agent and 0.01 -0.5 parts of hydrosilation catalyst, reacting and blending for 3-5min, discharging, cooling to the room temperature and obtaining a base stock; taking 100 weight parts of the base stock in the step one and 50-150 weight parts of thermoplastic resin for mixing uniformly, blending through an internal mixer or a double screw extruder and obtaining the siloxane-modified thermoplastic material. The cross-linking siloxane-modified thermoplastic material made by the invention has the advantages of higher heat resistance, excellent weather resistance, lower friction factor changing along with time, smooth surface, silk touch feeling and the like.

The invention relates to a rigid polyurethane foam material, in particular to a high-performance rigid polyurethane foam material containing epoxide group, which is characterized by being prepared by the reaction of the following components: isocyanate with 28-32wt% of NCO, polyalcohol compound with the OH value of 300-800, epoxy resin with the epoxy equivalent weight more than 100, catalyst compound, foam stabilizer and water, wherein the isocyanate component at least contains polyaryl polymethylene isocyanate; the polyalcohol compound at least contains polyalcohol component taking tolylenediamine as initiator; and the catalyst compound at least contains imidazole derivative catalyst, tertiary amine catalyst and organo-metallic catalyst. The rigid polyurethane foam material has high strength and super toughness as well good size stability, maintains excellent mechanical performance at higher temperature, and can be applied to wood-imitation material, filling material, thermal insulation material and the like.

The invention relates to a culture medium recipe for commercial production of rhamnolipid fermentation liquid, which is characterized in coin oil 2-5%, carbamide 0.2-1.5%, molasses 15-20%, potassium chloride 0.05-1.0%, KH2PO40.05-1.2%, K2HPO40.05-1.5%, yeast extract 0.005-0.1%, compound microelements 0.005-0.01% and the rest element is water; the pH value of the invention is 6.5-7.5. The invention has the advantages of low cost, high rhamnolipid content in fermentation, and is suitable for commercial production of rhamnolipid.

The invention discloses a preparation method of a meltable reinforced polyvinyl alcohol (PVA) composite, which comprises the following steps: (1) adding carbon nanotubes (CNT) into composite plasticizer containing a dispersion medium, stirring, and performing ultrasonic auxiliary dispersion for 1.5-4 hours to obtain a plasticizer solution; and (2) performing uniform incubation mixture on the plasticizer solution in the step (1) and a PVA resin to obtain the meltable CNT reinforced PVA composite. The invention also discloses the meltable reinforced PVA composite material prepared through the preparation method. According to the invention, the CNTs are dispersed in the plasticizer system for PVA; in the dispersion process, the viscosity of the disperse system can not be increased since no PVA is added; and on the premise of considering the economy, the amount of the CNTs can be increased as many as possible, thereby better realizing the reinforcement effect.

The invention provides a microcapsule and a preparation method thereof, an electrolyte and a preparation method thereof and a battery, and belongs to the technical field of batteries. The microcapsule comprises a capsule wall and a capsule core. The capsule wall is made of a first material. The capsule core is made of a second material, and the second material comprises silicon resin with flame retardance. The capsule wall covers the capsule core below a target temperature, the capsule wall is broken above the target temperature and releases the capsule core, and the first material is not dissolved in the electrolyte at least below the target temperature. The microcapsule is dispersed in the electrolyte of the battery, so that the electrical property of the battery is basically not influenced. When the temperature of the battery is higher than the target temperature, the capsule wall of the microcapsule is softened and broken, the microcapsule can release the capsule core of the microcapsule, and the silicon resin with flame retardance forms a diffusion shielding layer to prevent vaporized organic matters generated by high-temperature thermal decomposition of an internal high polymer material from diffusing to a combustion area. Meanwhile, the silicon resin has a very good heat insulation effect, heat transfer in the combustion process can be blocked to prevent continuous reaction, and then the high-temperature safety performance of the battery is improved.

The invention provides an emamectin benzoate microcapsule suspending agent and a preparation method thereof. The microcapsule suspending agent is prepared from the following components in parts by mass: 1 to 5.7 parts of emamectin benzoate; 0.5 to 2 parts of a capsule material; 0.1 to 0.5 part of a curing agent; 10 to 25 parts of a solvent; 4-8 parts of a dispersant; 0.2 to 1.5 parts of a thickening agent; 1-3 parts of an antifreezing agent; 0.05 to 0.2 part of a defoaming agent; 1-2 parts of an emulsifier; and 50 to 82 parts of deionized water. The microcapsule suspending agent is high in encapsulation efficiency and large in drug loading capacity.

The invention provides a method of silver-tarnishing prevention for a silver-plated element of a communication product. The method comprises the following steps: pouring an electrical contact protection agent SP-2002S into a container; putting silver-plated elements into the protection agent for dip-coating, shaking the container so as to exhaust air, enabling the elements not to adhere to each other and carrying out dip-coating for 2 +- 1 min; carrying out brush coating, that is, taking some of the protection agent with a clean dry soft brush and uniformly brushing the protection agent on the surfaces of the elements, wherein, slits of the elements should be soaked; naturally drying the elements in the air or drying the elements with hot air at a temperature of no more than 120 DEG C. Particularly, 0.06 to 0.1 g/L of MOSS or PESS is added into the electrical contact protection agent SP-2002S.

The invention discloses a saturated salt filtrate reducer polymer for drilling fluid. The saturated salt filtrate reducer polymer is prepared from the following components in percentage by weight: 80 percent of raw material A (polymer) and 20 percent of raw material B (modified starch). The saturated salt filtrate reducer polymer is prepared by reacting natural materials with active substances with special functions by a special process; the saturated salt filtrate reducer polymer is superior to artificially-synthesized polymer filtrate reducers in property, has better temperature tolerance and salt tolerance, and is suitable for drilling fluid systems containing fresh water, and saline water and seawater with various concentrations; the saturated salt filtrate reducer polymer does not ferment in the drilling fluid, can be biologically degraded and is free from pollution to the environment, so the saturated salt filtrate reducer polymer belongs to a green environment-friendly product.