61results about How to "Improve Tangling Effect" patented technology

The invention belongs to the field of water-soluble flooding polymer study, particularly relates to a high-molecular-weight heat-resistant salt-tolerate graft polyacrylamide synthesized with macromolecule monomer route. The preparation method of the heat-resistant salt-tolerate graft polyacrylamide comprises obtaining poly(N-vinyl pyrrolidone)acrylamide macromolecule monomer through chain transfer free radical polymerization and terminal group replacement; and copolymerizing the macromolecule monomer with acrylamide, N-vinyl pyrrolidone, N,N-dimethylacrylamide, 2-acrylamido-2-methylpropanesulfonic acid or other heat-resistant salt-tolerate monomer in the present of an oxidation-reduction composite initiation system to obtain target product. The invention ensures the heat-resistant salt-tolerate performance of the copolymer from molecular design, and the functional long graft side chain can increase the viscoelasticity of polymer modules and reduce solution surface tension. The inventive product is used for type III oil reservoir, and provides a possible solution for increasing recovery efficiency of chemical flooding.

The invention relates to a temperature and salt resistant grafted polyacrylamide synthesized by a macromonomer route, belonging to the research field of water-soluble polymer used for displacement of reservoir oil. A method of chain transfer free radical polymerization and terminal group replacement is adopted to obtain a polyacrylamide (N,N-dimethylacrylamide) type macromonomer. Under an oxidation-reduction complex initiation system, temperature and salt resistant monomers, such as the macromonomer, acrylamide, N-polyvinyl pyrrolidone, N,N-dimethylacrylamide, 2-Acryloylamino-2-methyl propanesulfonic acid and the like, are copolymerized to obtain a target product. From molecular design, a functional long-grafted side chain can increase the viscoelasticity of the polymer molecule and lower solution surface tension. The product provided by the invention can be used for three-class oil deposit and provides a possible solution for improving the recovery ratio for chemical displacement of reservoir oil.

The invention relates to a process for producing spunlaced composite high-performance polyphenylene sulfide fiber filtering material, belongs to the fibrous raw material textile production technology field. The process uses polyphenylene sulfide fiber as raw material, has the following steps: processing raw material by checking, weighing, feeding, feeding into long certain, mixing cotton and fine loosing; layering and carding respectively by a first carding machine and a second carding machine; putting respectively into mesh placing machine for placing mesh; debatching, congruent, superposing and prewetting; spunlacing by a plurality of spunlacing machine, dewatering, drying and reeling. The advantages of the invention is that: the invention adopts polyphenylene sulfide high-performance fiber as raw material, the raw material is adapted to high efficient high speed carding production for its self physical and chemical properties, structure and adaptability to meshing and reinforcing process; improves spunlacing entanglement effect to fiber; improves the mechanical strength of spunlaced composite filtering material significantly, and ensures the end product to achieve excellent mechanical properties, filtering quality and chemical resistance property.

The invention relates to a production technology of high-strength and anti-wrinkle spunlace non-woven fabric and relates to the technical field of non-woven fabric production. The production technology comprises the following steps of S1, preparation of fiber raw materials, wherein the fiber raw materials are prepared from, by weight, 10-15 parts of bamboo fibers, 8-12 parts of viscose, 20-30 parts of polypropylene, 15-20 parts of polyisobutene and 2-5 parts of anti-wrinkle agent, the fiber raw materials are mixed, subjected to opening and then carded into a web through a carding machine, andthe fiber web is obtained and drafted through a drafting machine; S2, spunlace, wherein the fiber web drafted in the first step is fed into a spunlace area to form non-woven fabric, and the non-wovenfabric is dried; S3, cold stacking, wherein the non-woven fabric dried in the second step is soaked in an addition agent and subjected to cold stacking; S4, washing through water, wherein the non-woven fabric subjected to cold stacking in the third step is washed through water 2-3 times, and the residual addition agent is removed; S5, drying. The production technology has the advantages that the non-woven fabric is high in strength, formation rate and production rate and does not easily wrinkle.

The invention discloses a high-melt-strength biodegradable polyester material which is characterized by being prepared from the following raw materials in percentage by weight: 91.00-99.88% of biodegradable polyester; 0.01-1.00% of an organic peroxide; 0.01-3.00% of a silane coupling agent; and 0.10-5.00% of silicon dioxide particles. The invention also provides a preparation method of the high-melt-strength biodegradable polyester material. The high-melt-strength biodegradable polyester material has high melt strength, is green and environment-friendly, and can completely meet the requirements of processing and forming modes related to melt stretching.

The invention discloses a preparation method of polyphenylene sulfide resin for melt blowing. The preparation method is characterized by comprising the following steps: reacting p-dihalogenated benzene, an S<-2>-containing compound, an amide organic compound with alkali salt at a temperature 180-250 DEG C and a pressure of 0.1MPa-5.0MPa for 1-24 hours, so as to obtain a linear PPS prepolymer; andreacting the linear PPS prepolymer with dihalogenated hydrocarbon at a temperature of 230-280 DEG C and a reaction pressure of 0.1MPa-5.0MPa for 1-24 hours, so as to obtain PPS resin for melt blowing,wherein dihalogenated hydrocarbon is m-dihalogenated aromatic hydrocarbon or p-dihalogenated hydrocarbon. When being added, m-dihalogenated aromatic hydrocarbon is taken as a structural regulator, and the high-entanglement helical-structure or spring-structure PPS resin for melt blowing is obtained; and when being added, p-dihalogenated hydrocarbon is taken as a chain extender, and high-linearityand relatively-low-viscosity PPS resin for melt blowing is obtained. The preparation method is relatively low in processing temperature, so that the decomposition and carbonization of PPS can be inhibited, and the oxidation and crosslinking of PPS can be prevented.

The invention discloses a processing method of alginic acid fiber for non-woven medical dressing fabric, belonging to the field of biofiber processing. The processing method comprises the steps of: weighing and mixing the following ingredients in parts by weight: 30-50 parts of tween-80 solution and 70-50 parts of water to obtain an emulsifying agent; cutting off alginic acid fiber wool tops to obtain short-cut alginic acid fiber wool tops; spraying the emulsifying agent on the short-cut alginic acid fiber wool tops, controlling the weight ratio of the emulsifying agent and the short-cut alginic acid fiber wool tops, and filling in a close container for standing after the spraying is finished, thereby obtaining emulsified alginic acid fiber; taking out the emulsified alginic acid fiber from the close container to be spread in an exposed state, and controlling the spreading time to obtain the alginic acid fiber for non-woven medical dressing fabric. The alginic acid fiber for non-woven medical dressing fabric has desirable strength and excellent toughness, can meet the carded web requirement of a carding machine in a non-woven process, can show good entanglement effect among fibers in the following needling process of a needling machine without the scattering phenomenon.

The invention relates to the field of non-woven materials, and discloses a filament non-woven composite material and a preparation method thereof. The filament non-woven composite material comprises an aggregate prepared by taking filament fibers and ultra-short fibers as raw materials, wherein the filament fibers are synthetic fiber filaments; the ultra-short fibers are hydrophilic ultra-short fibers; and the hydrophilic ultra-short fibers are distributed in the synthetic fiber filaments, and the hydrophilic ultra-short fibers and the synthetic fiber filaments are intertwined and/or the hydrophilic ultra-short fibers are bonded and fixed to the synthetic fiber filaments. The filaments and the ultra-short fibers are used as raw materials, the filament non-woven composite material is produced through polymer spinning and a wet-process net forming process, and the filament non-woven composite material has the advantages of being high in breaking strength, not prone to scrap falling, soft in hand feeling and good in moisture absorption.

The invention relates to a blend of PPC, PBAT and PCL and a preparation method thereof. The blend consists of PPC, PBAT, PCL, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate, wherein the mass ratio of the summation of the PCL and the PBAT to the PPC is 10-100:100 and the proportion of each component of the PCL and the PBAT to the summation of the PCL and the PBAT is not less than 5 percent in the mass ratio. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PCL, the PBAT, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at the temperature not above 35 DEG C; and extruding and granulating cold mixed materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 170 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; and the granule performance of the blend processed by the method is superior to that of pure PPC.

The invention relates to a blend of PPC, PBAT, PLA and PBS and a preparation method thereof. The blend consists of PPC, PBAT, PLA, PBS, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the PLA, the PBS, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at the temperature not above 35 DEG C; and extruding and granulating cold mixed materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is greatly improved in comparison with the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.

According to the preparation method of the anti-deformation acrylic plate with the heat insulation and heat preservation functions, the acrylic plate base layer is prepared in a methyl methacrylate, butyl acrylate and diallyl adipate ternary polymerization mode, the strength of the acrylic plate is greatly improved, and the mechanical property is improved; wheat straw fibers and glass fibers are mixed and woven to prepare a fiber layer, and the fiber layer is used as an anti-deformation layer to enhance the anti-deformation capability of the acrylic plate; nano-silver-loaded nanofiber crystals are prepared from nanocrystalline cellulose, glucose and a silver ammonia solution, the antibacterial property of the acrylic plate is improved, and after graphene oxide quantum dots are added, the fiber entanglement capacity is improved, the internal stress of the acrylic plate is reduced, and the thermal insulation performance of the acrylic plate is improved; the hollow glass beads are uniformly dispersed in the foamed polyurethane to prepare the heat preservation layer, the hollow glass beads and the foamed polyurethane play a synergistic role in improving the heat resistance of the acrylic plate, and the heat insulation and heat preservation performance of the acrylic plate can be greatly improved by optimizing the component proportion.

The invention discloses an EVA shoe sole and a preparation method thereof. The EVA shoe sole is prepared from, by weight, 60-70 parts of EVA, 8-10 parts of OBC, 12-15 parts of POE, 1-2 parts of an ACfoaming agent, 1-2 parts of a cross-linking agent and 2-3 parts of an activator. The OBC has good heat resistance, high elasticity and good processability, and can provide excellent resilience for anEVA foaming system, so that the EVA sole has high elasticity and is not prone to being compacted. By adding the POE, the resilience of the EVA sole can be further improved, the surface crystallizationrate of the material can be reduced, the problem that the surface of a traditional EVA foamed shoe material is prone to wrinkling is solved, and the attractiveness of the product is improved. Besides, OBC molecules and POE molecules inevitably form entanglement in a three-dimensional space, and the entanglement can limit movement of macromolecular chain segments like chemical crosslinking, so that the EVA sole is further not prone to being compacted, the surface of the EVA sole is not prone to wrinkling, and the use performance and the attractive performance are guaranteed.

The invention relates to a blend of PPC, PBAT, PCL, PBS and PLA and a preparation method thereof. The blend consists of PPC, PBAT, PCL, PBS, PLA, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the PCL, the PBS, the PLA, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at temperature not above 35 DEG C; and extruding and granulating cold mixed materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is superior to that of the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.

The invention relates to PPC (poly(propylene carbonate)), PBAT (poly(butylene adipate/terephthalate)) and PBS (poly(butylene succinate)) blend and a preparation method. The blend is formed by PPC, PBAT, PBS, a blocking agent, lubricant and modified light calcium carbonate, and the preparation method comprises the following steps of: cooling-mixing the PPC, the PBAT, the PBS, the blocking agent, the lubricant and the modified light calcium carbonate in a high-speed mixer under a condition with the temperature not higher than 35 DEG C, and extruding a cooling-mixed material by a screw extruder for pelleting, wherein the temperature for pelleting is not higher than 200 DEG C. The invention has the advantages that the method has simple process, common equipment, and suitability for industrialization production; meanwhile, raw materials used in the method are simple and easy to obtain and can be easily bought in a market; and the blend processed out by the method has greatly increased temperature of sticky clotting higher than that of a pure PPC and greatly improved mechanical performance of the blend larger than that of the pure PPC, broadens the application range of the pure PPC and is completely biodegraded.

The invention discloses a palm fiber mattress core material bonded by thermoplastic fibers. The palm fiber mattress core material sequentially comprises a non-woven fabric surface layer, a PP melt-blown non-woven fabric layer, a palm fiber layer and a non-woven fabric bottom layer, wherein the palm fiber layer has a net layer structure formed by dispersing and mixing thermoplastic fibers and palmfibers and then thermally bonding, the thermoplastic fibers are selected from PP, PET, PA, PE and ES fibers, and the palm fibers are selected from palm fibers and/or coconut fibers. According to the invention, the adopted PP and other conventional materials are wide in source and low in price, are thermoplastic materials, and can be recycled through a certain technology, so that the used materialshas cost advantage and environmental protection performance in bonding and compounding of palm fibers.

The invention discloses a negative photoresist composition containing carboxyl phenolic resin with high heat resistance. According to the high-heat-resistance carboxyl phenolic resin, the structural general formula is shown in the description, wherein x is 0-4, the ratio of m to n is 0.05-0.75: 1, R is H, phenyl or C1-C9 alkyl, and the weight-average molecular weight of the resin is 8,000-35,000g/mol. The film-forming resin is mixed with a photoacid generator, a curing agent, an additive, a solvent and other components to obtain the negative photoresist composition. Tests prove that the negative photoresist composition is high in resolution ratio, good in heat resistance and suitable for a lift-off metal stripping process under a high-temperature operation condition.

The invention discloses a reinforced and toughened plant fiber-melamine resin composite material and a preparation method thereof. The reinforced and toughened plant fiber-melamine resin composite material is prepared from the following raw materials in parts by weight: 50 to 60 parts of melamino-formaldehyde resin, 35 to 45 parts of modified plant fiber, 1 to 3 parts of mineral filler, 0.05 to 0.1 part of curing agent and 0.5 to 1 part of lubricating agent. By optimizing a plant fiber filling system, the prepared plant fiber-melamine resin composite material has excellent bending property, impact toughness and mechanical property, and the durability of a plant fiber-melamine resin product can be greatly improved.

The invention discloses a scratch-resistant easy-to-wipe flame-retardant polypropylene composition for a converter. The polypropylene composition comprises the following components in parts by weight:80-100 parts of co-polypropylene, 40 to 60 parts of homo-polypropylene, 10 to 15 parts of 2,4,6-tribromophenyl methyl heptenoic acid ester, 3 to 5 parts of Sb2O3, 2 to 3 parts of boron-doped heteroatom polysiloxane, and 2 to 5 parts of oligomerization degree polysiloxane. According to the invention, through selection of specific raw materials, the problem that flame retardance is influenced by high degradation rate of polysiloxane in an acid environment of a flame retardant is solved, and the problem that polypropylene material is easy to wipe and resistant to scraping of soft cleaning articles is solved.