69results about How to "Improve melting properties" patented technology

A method for producing a microporous polyolefin membrane by extruding a melt blend comprising a polyethylene resin, polypropylene having a mass-average molecular weight of 1 × 10 5 or more and an ethylene content of 5% by mass or less, and a membrane-forming solvent through a die, slowly cooling the resultant extrudate to form a gel-like sheet, stretching the gel-like sheet, and removing the above membrane-forming solvent, the slow-cooling speed of the extrudate being 30°C / second or less.

The present invention provides a material for slush molding which is improved in melt properties during slush molding and is excellent in heat resistance, the material being made up of a thermoplastic polyurethane resin (A) the difference between the softening starting temperature (STi) and the softening ending temperature by TMA being from 0 to 30° C., and STi being 135 to 200° C. The resin (A) has a hard segment with an Mn of 200 to 2000 comprising a diisocyanate having a symmetrical structure, a low molecular-weight diamine having a symmetrical structure, and / or a low molecular-weight diol, the content of which being from 5 to 50 wt %, and a soft segment making up of a high molecular-weight diol with an Mn of 500 to 5000, with the aromatic content being 35 wt % or less and the aromatic ring content x and the urea group content y satisfying <?in-line-formulae description="In-line Formulae" end="lead"?>-0.1x+2.5<=y<=-0.1x+6.<?in-line-formulae description="In-line Formulae" end="tail"?>

The invention belongs to the technical field of resourceful utilization of organic solid wastes, and specifically discloses a method for preparing carbon black from pyrolysis coke of a waste tire through molten salt heat treatment, and a product prepared by using the same. The method comprises the following steps: heating one or two selected from the group consisting of a metal chloride salt groupand a metal sulfate salt group so as to obtain molten salt; adding the pyrolysis coke of the waste tire into the molten salt, and carrying out molten salt heat treatment under a preset reaction atmosphere; and after completion of a reaction, separating a reaction product into secondary molten salt and treated pyrolysis coke, washing treated pyrolysis coke with hot water, carrying out drying so asto obtain the carbon black, and recycling the secondary molten salt at the same time. According to the invention, by utilization of the melting characteristic of the molten salt, impurity componentsin the pyrolysis coke of the waste tire are dissolved out, so the use of strong acids and strong alkalies like nitric acid, hydrochloric acid and an alkali liquor is avoided; meanwhile, through addition of metal chloride salt, the low-temperature melting characteristic of the molten salt is reinforced; and by utilization of metal sulfate salt, acidic gases like hydrogen sulfide and hydrogen chloride are captured in situ at the same time.

The invention discloses a flux for reducing a fine coal gasification ash melting point temperature and a use method thereof and belongs to the field of fluxes. The flux is papermaking sludge, contains organic matters, has air-dried base heat of 800-1000 kcal / kg and alkaline oxide mass content more than 50% and comprises, by mass, 40-56% of CaO, 3-12% of MgO, 3-12% of Al2O3, 9-15% of Fe2O3, 14-20% of SiO2, less than 3% of SO3, less than 0.8% of TiO2, less than 1% of each one of alkali metal oxides and a small amount of impurities. The use method of the flux comprises that when a raw material coal deformation temperature is less than 1450 DEG C, a flux use ratio is in a range of 6-15%, and when the raw material coal deformation temperature is higher than 1450 DEG C, a flux use ratio is in a range of 15-30%. The flux can effectively reduce a coal ash melting point, realize resource utilization of papermaking sludge waste and realize utilization of papermaking sludge heat.

Provided is a molding material comprising a composite of 1 to 50 wt % of a continuous reinforcing fiber bundle (A) and 0.1 to 20 wt % of a poly (phenylene ether ether ketone) oligomer (B); and 30 to 98.9 wt % of a thermoplastic resin (C) adhering to the composite, wherein the component (B) has a melting point of not higher than 270° C. Also provided are a method for molding the molding material, a method for producing the molding material, and a method for producing a fiber-reinforced composite material.A molded article having high heat resistance and dynamic properties can be easily produced without impairing the economic efficiency and productivity during the process for producing a molding material. In addition, a fiber-reinforced composite material can be produced with more ease and high productivity.

The invention belongs to the technical field of auxiliary materials for metal smelting and relates to continuous casting mold flux for boron containing steel. The continuous casting mold flux for the boron containing steel is prepared from, by weight, 3-7 parts of glass powder, 40-55 parts of premelting materials, 27-35 parts of aedelforsite, 2 parts of carbon black, 4-5 parts of graphite, 5-9 parts of sodium carbonate, 2.5-5.5 parts of sodium fluoride, 2-4 parts of bauxite, 2-5 parts of caustic calcined magnesite, 5-8 parts of boron carbide and 1.2 parts of binding agent. For crack sensitivity of the boron containing steel, selection, basicity, viscosity and melting point of raw materials of the continuous casting mold flux are controlled comprehensively, so that crack sensitivity of the boron containing steel is improved effectively, and the problems of cracks at edges of the surface of the boron containing steel is solved.

The invention discloses a method for preparing a platy or lump processed cheese, comprising steps as follows: (1) shearing and mixing materials which contain natural cheese, butter oil, emulsifying salt and water; (2) heating under the shearing condition; (3) shearing emulsification; (4) forming the platy or lump cheese and then cooling. The method is characterized in that: both the shearing condition in step (2) and shearing emulsification in step (3) use a cutter with a blade thickness of 2-10mm, at a shearing rotating speed of 200-800rpm; in step (2), the materials are heated to 70-80 DEG C; and in step (3), the temperature for shearing emulsification ranges from 70 to 80 DEG C. The invention also discloses a platy or lump processed cheese prepared by the method. The invention improvesthe prior technique for preparing processed cheese by using low shearing condition to overcome the defect that the prior processed cheese has no stringiness, and provides a platy or lump processed cheese with stringiness, favorable mouth feel and texture and long guarantee period without browning reaction.