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

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 corrosion-resistant cable material and a preparation method thereof and relates to the field of cable materials. The corrosion-resistant cable material is prepared from 60 to70 parts by weight of polypropylene, 20 to 30 parts by weight of an ethylene-propylene-diene monomer, 15 to 22 parts by weight of glass fibers, 8 to 15 parts by weight of ultrafine diatomite, 10 to 16 parts by weight of modified basic magnesium sulfate whisker, 3 to 7 parts by weight of white carbon black, 3 to 7 parts by weight of zirconium dioxide, 1 to 3 parts by weight of polytetrafluoroethylene, 1.5 to 3.2 parts by weight of neodymium oxide, 2 to 4 parts by weight of tetrabutyl titanate, 1.5 to 2.5 parts by weight of melamine, 0.8 to 1.8 parts by weight of a beta-nucleating agent, 2.5 to4 parts by weight of a plasticizer, 0.4 to 0.8 parts by weight of a cross-linking agent, 1.5 to 2.5 parts by weight of an antioxidant and 1.5 to 2.5 parts by weight of a lubricant. Through cooperation of the cable material components, the corrosion-resistant cable material has good strength and mechanical toughness, corrosion resistance, aging resistance, high temperature resistance, high flame retardancy, no harmful smoke in burning and environmental friendliness.

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 discloses a preparation method for a novel heavy oil viscosity reducer. The novel heavy oil viscosity reducer is prepared from, by weight, 30 to 50 parts of methyl methacrylate, 9 to 15parts of styrene, 5 to 11 parts of acrylamide and 3 to 5 parts of maleic anhydride through aqueous solution polymerization and physical compounding. According to the invention, an oil-soluble polymeris prepared by initiating the polymerization of monomers in virtue of an initiator; through addition of a small amount of the heavy oil viscosity reducer into crude oil, the viscosity of crude oil canbe effectively reduced, and the rate of heavy oil recovery is increased; and the heavy oil viscosity reducer is applicable to exploitation and development of heavy oilfields.

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 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 invention discloses a high-gloss PP material which comprises the following components in percentage by mass: 45 to 50 percent of PP, 30 to 35 percent of PPB, 18 to 18.5 percent of barium sulfate, 0.3 to 0.4 percent of an aluminate coupling agent, 0.05 to 0.1 percent of an antioxidant, 0.15 to 0.2 percent of an auxiliary antioxidant, 0.05 to 0.1 percent of an anti-ultraviolet agent, 0.2 to 0.5 percent of a lubricant and 0.1 to 0.2 percent of a nucleating agent. According to the invention, the surface gloss and hardness of PP are effectively improved.

The invention discloses a polyvinylidene fluoride hollow fiber microfiltration membrane and a preparation method thereof, the microfiltration membrane comprises polyvinylidene fluoride and polytrifluorochloroethylene, and the mass ratio of the polyvinylidene fluoride to the polytrifluorochloroethylene is 100: (5-40). The porosity of the microfiltration membrane is greater than 80%; the aperture of at least 70% of the microfiltration membranes is between 0.1 [mu] m and 0.2 [mu] m, the aperture of less than 15% of the microfiltration membranes is between 0.01 [mu] m and 0.1 [mu] m, and the aperture of less than 15% of the microfiltration membranes is between 0.2 [mu] m and 0.3 [mu] m. The microfiltration membrane has the advantages of high strength, high water flux, excellent chemical resistance, weather resistance and oxidation resistance, environmental friendliness and the like.

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 cover tape sequentially comprises a base material layer, a middle layer, an antistatic coating and a heat sealing layer, the middle layer comprises an ethylene polymer, an antistatic agent and organic particles, and the density of the ethylene polymer is 0.90-0.94 g / cm < 3 >. According to the invention, the middle layer with excellent antistatic property and transparency is arranged, and the antistatic coating and the antistatic heat sealing layer are additionally arranged, so that the cover tape meets the requirements of high transparency and excellent antistatic effect, also has the advantages of good buffering property, good stripping stability and the like, and is particularly suitable for being used as a cover tape for packaging miniature electronic components.

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 invention provides ZSM-5 zeolite and a preparation method thereof, and provides application of the ZSM-5 zeolite as a chemical reaction catalyst or a catalyst carrier. The raw materials used in the invention are simple, cheap and easily available, have good compatibility with zeolite crystals, do not destroy the zeolite crystals, can flexibly regulate and control the zeolite crystallization process, change the zeolite crystallization behavior, improve the zeolite crystallinity, improve the silica-alumina ratio of the framework, reduce the framework defects, improve the activity and stability of a catalyst, and are beneficial to catalytic reaction. The preparation process is simple and beneficial to industrial large-scale production. In addition, the ZSM-5 zeolite prepared by the method can also be used as a carrier material of a semiconductor composite material catalyst, has extremely high compatibility, and improves the photocatalytic reaction efficiency of the catalyst.

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.