31results about How to "Changed crystallization behavior" patented technology

The invention belongs to the technical field of food additives and provides a preparation method of edible color lake based on calcium carbonate. The preparation method comprises steps as follows: S1,dissolving carbonate in water to obtain a carbonate solution; S2, dissolving water-soluble anionic pigment in the carbonate solution obtained in S1 to obtain a mixed solution; S3, adding hydrochloricacid to the mixed solution obtained in S2, and adjusting the pH to 7-10.54; S4, dissolving calcium salt into water, then adding an obtained solution to the solution obtained in S3, controlling the pHof the solution in the range of 6-9, and performing ultrasonic treatment for 1-10 min and centrifugation to obtain calcium carbonate precipitates adsorbing pigments; S5, drying and grinding the calcium carbonate precipitates adsorbing pigments to obtain the edible color lake based on calcium carbonate. The insoluble problem that aluminum color lake has potential safety hazard is solved.

The invention belongs to the technical field of high molecular materials, and discloses a lignin / polyvinyl alcohol composite material and a preparation method thereof. The composite material comprisesthe following components by mass percentage: 70-99.4% of polyvinyl alcohol, 0.5-30% of lignin and 0.1-10% of additive, wherein the additive comprises at least one of 3-amino-1,2,4 triazole, 4-aminopyridine, 1-(3-aminopropyl) imidazole, 4-(2-ethylamino) benzene-1,2-diphenol, 2-amino-3-imidazolylpropionic acid, tannic acid, 3,3,3',3'-tetramethyl-1,1-helix biindolyl-5,5',6,6'-tetraol, zinc chloride,zinc acetate, ferric chloride, calcium chloride, copper chloride, iron oxide, and sodium chloride. The present invention also provides a composite material preparation method. The tensile strength ofthe lignin / polyvinyl alcohol composite material can reach up to 140 MPa, and the elongation at break of the lignin / polyvinyl alcohol composite material can reach up to 800%.

The invention discloses a preparation method of a novel viscosity reducer for thick oil. According to the preparation method, methyl methacrylate, styrene, acrylamide and maleic anhydride are taken asraw materials, and the viscosity reducer for the thick oil is prepared by using aqueous solution polymerization and physical compounding methods; the viscosity reducer for the thick oil is prepared from the following raw materials in parts by weight: 30-50 parts of methyl methacrylate, 9-15 parts of styrene, 5-11 parts of acrylamide and 3-5 parts of maleic anhydride. According to the method, an oil-soluble polymer is obtained by using an initiator to initiate a polymerization reaction of monomers; after a small amount of the product is added into crude oil, the viscosity of the crude oil canbe effectively reduced, and the recovery rate of the thick oil is increased; therefore, the novel viscosity reducer is suitable for development and utilization in oilfields with thick oil.

The present invention belongs to the technical field of polymer materials, and particularly relates to a nucleating agent / polymer composite antistatic agent, a preparation method and applications thereof. According to the present invention, the composite antistatic agent is the complex of the commercialized polymer antistatic agent and the nucleating agent, and is used for the antistatic polymer materials; the nucleating agent is added to the component of the composite antistatic agent so as to change the crystallization behavior of the polymer materials, wherein the crystallization rate and the crystal density are significantly increased and the grain particle size becomes smaller, such that the amorphous region becomes small, and the filling amount of the antistatic agent in the polymer material can be significantly reduced so as to reduce the production cost; with the composite antistatic agent, the permanent antistatic property is provided for the polymer material while the mechanical property and the processing property of the polymer material are enhanced; and the cost of the novel polymer composite antistatic agent is low, the preparation method is simple, and the method is suitable for industrial production.

The present invention provides an oil and fat composition for delaying or inhibiting blooming, comprising a base oil and beeswax, wherein the base oil has one or more properties selected from the group consisting of: 3-10 fatty acid composition C16 / C18 ratio, iodine number of 5-45, slip melting point of 35-41°C, and ratio of solid fat content at 20°C (SFC20) to solid fat content at 35°C (SFC35) of 3-18.

The invention provides copolyester of the structure as shown in the formula (I), wherein a is more than or equal to 1; b is more than or equal to 1; n is more than or equal to 1; x is more than or equal to 0; y is more than or equal to 0; x and y are not 0 at the same time. According to the preparation method, the crystallization behavior of 2,5-furadicarboxylic acid or a derivative thereof is changed by polymerization reaction of 2,5-furadicarboxylic acid or the derivative thereof with ethanediol, 1,4-butanediol, long-chain dihydric alcohol of a structure as shown in the formula (II) and a catalyst, so as to finally obtain the structure as shown in the formula (I), which is high in co-polyester toughness and high in elongation at break and impact strength.

The invention relates to a polyamide composite material with good touch feeling and easy encapsulation and a preparation method thereof. The material comprises the following components in parts by weight: 25-75 parts of PA6 resin; 15-50 parts of glass fiber; 5-15 parts of styrene copolymer ; 2-8 parts of compatibilizer; 3-10 parts of polar modifier; 0.2-0.5 parts of antioxidant; Graft copolymer; when preparing, weigh other components except glass fiber according to the mass fraction and mix them in a high-speed mixer, then put them into the main feeding port of the twin-screw extruder, and the glass fiber is fed from the side feeding port Add, extrude and granulate. The polyamide composite material with good touch and easy encapsulation obtained in the present invention has the characteristics of good surface touch, wear resistance, easy encapsulation, etc., and can be widely used in fields such as electric tools, sports equipment, electronic appliances and the like that require encapsulation injection molding.