36results about How to "Less prone to curling" patented technology

The invention discloses a kind of hydrophobic association polyacrylamide and its preparative method. The product is the copolymer of acrylamide and dendritic I branch-like hydrophobic monomers, in which, the amount of monomeric unit of acrylamide is integer of 124013~139860, the amount of monomeric units of dendritic hydrophobic monomers is integer of 140~6527. In the invention, high degreed branching hydrophobic monomers are inlet on a chain of macromolecules by the way of micelles' copolymerization, the monomers can promote the capability of hydrophobic interaction of polymers' chain without any curling for its greater hydrophobic volume, so a better viscosity can be achieved. The content of the hydrophobic chain can be controlled by the way of controlling the amount of hydrophobic monomers to improve the solubility of copolymer

The invention relates to a preparation method of a high-temperature-resistant high-salt polymer oil-replacement agent, which comprises the following steps: dissolving 10-20 parts by weight of anionic monomer, 50-65 parts by weight of sodium allylsulfonate, 11-22 parts by weight of cationic monomer, 2-4 parts by weight of acrylate, 0-3.5 parts by weight of alpha-alkene and 50-60 parts by weight ofacrylamide in deionized water, wherein the total mass concentration of the monomers is 15-23%; adding a surfactant which accounts for 1-5% of the total weight of the monomers, regulating the pH valueof the solution to 9-10, introducing ammonia gas at 30-60 DEG C for 30 minutes, and adding a persulfate initiator which accounts for 0.05-0.1% of the total weight of the monomers; and reacting at 30-60 DEG C for 12 hours, precipitating with acetone, washing, and carrying out vacuum drying to obtain the white powdery polymer. The invention is characterized in that long-carbon-chain alkyl group, anionic and cationic unit structures are introduced into the water-soluble polymer macromolecules to obtain the high-temperature-resistant high-salt water-soluble polymer oil-replacement agent.

Disclosed is an optical laminate which is prevented from occurrence of curling (warping), while maintaining adequate pencil hardness and having excellent durability. The optical laminate is capable of preventing decrease in durability of an image display screen due to the outside light when used as a protection film for the image display screen. Specifically disclosed is an optical laminate in which at least a hard coat layer is formed on a light-transmitting substrate. The optical laminate is characterized in that: the hard coat layer is obtained by curing a composition for the hard coat layer containing a polyfunctional ultraviolet-curable (meth)acrylate resin, an ultraviolet absorbent and a photopolymerization initiator by irradiation of ultraviolet light; the hard coat layer has a Martens hardness (A) of 230-320 N / mm2 in a surface that is on the reverse side of the light-transmitting substrate-side surface; the light-transmitting substrate-side surface of the hard coat layer has a Martens hardness (B) of 160-250 N / mm2; the Martens hardness (A) is larger than the Martens hardness (B); and the elastic modulus of the hard coat layer is continuously changed in the thickness direction.

In the present invention, a porous membrane for use in a secondary battery, which contains non-conductive particles and a water-soluble polymer, uses as a water-soluble polymer a copolymer that contains 15 to 50% by weight of an ethylene-unsaturated carboxylic acid monomer unit, 30 to 80% by weight of a (meth) acrylic acid ester monomer unit, and 0.5 to 10% by weight of a fluorine-containing (meth) acrylic acid ester monomer unit.

The invention provides a hydrophobic polymer graft modified acrylamide polymer and a preparation method thereof, mainly for solving the problem in the prior art that general acrylamide polymers have poor temperature resistance, poor resistance to salinity, poor ageing-resistance performance and poor displacement effect. The chemical general formula of the hydrophobic polymer graft modified acrylamide polymer is P-g-X, wherein P is polyacrylamide or acrylamide polymer, X is hydrophobic polymer the molecular chain structure of which is in a form of homopolymerisation, random copolymerization or block copolymerization, and the viscosity average molecular weight of the graft compound is more than or equal to seventeen million. The adoption of the hydrophobic polymer graft modified acrylamide polymer and the preparation method thereof well solves the problem in the prior, and the technical scheme can be used in industrial production and displacement of reservoir oil.

The invention discloses an acrylamide copolymer and a preparation method and an application thereof, wherein the acrylamide copolymer contains an acrylamide structural unit and a structural unit A shown in a formula (I), the viscosity average molecular weight of the acrylamide copolymer is more than 30 millions, M1 and M2 can be same or different and respectively can be sodium or potassium. The invention also discloses a preparation method of the acrylamide copolymer, and an application of the acrylamide copolymer as an oil displacement agent, the acrylamide copolymer of the present invention has the advantage of high temperature resistance, and has good tackifying effect under high ore degree, the acrylamide copolymer can be widely used in petrochemical industry filed, and especially is taken as an oil-displacement agent for tertiary recovery.

The invention discloses a production method of skin-moistening moisture-keeping paper special for mothers and infants. The skin-moistening moisture-keeping paper comprises the following component: a bleached soft wood and broadleaf wood pulp plate. The skin-moistening moisture-keeping paper is prepared through the following steps: S1, taking the bleached soft wood and broadleaf wood pulp plate asslurry, and respectively dispersing the slurry into long-fiber slurry and short-fiber slurry by a hydraulic pulper; S2, beating the long-fiber slurry to a beating degree of 19-22 degrees SR through adisc mill, defibering the short-fiber slurry through a high-frequency defibering machine, mixing the defibered short-fiber slurry with the long-fiber slurry according to a proportion of 60:40, and beating the obtained mixture to a beating degree of 26-30 degrees SR through a leveling mill; S3, adding a softening agent of 0.8-1.2 kg / T; S4, enabling the prepared slurry to form original paper; S5, carrying out spraying by a spraying device; S6, linking the start-stop of the spraying device with a rewinder program, and reeling up a coiled paper roll by a rewinder; and S7, carrying out packaging. According to the invention, plant extracts are used as raw materials, skins are not damaged easily, the preparation is simple, and the product quality is improved.

The invention provides a polymer-based double-layer nanofiber composite proton exchange membrane, and the proton exchange membrane comprises a polymer layer and two fiber layers compounded with the polymer layer, wherein the polymer layer is located between the two fiber layers; and the polymer layer comprises a polymer electrolyte, and the fiber layer comprises nanofibers. The polymer-based double-layer nanofiber composite proton exchange membrane provided by the invention has good proton conductivity, structural stability and other properties.

The invention relates to the technical field of corrugated paperboards and provides a waterproof corrugated paperboard with good waterproof and dampproof effects, high strength and insusceptibility to deformation. The waterproof corrugated paperboard comprises a corrugated paperboard body, wherein the corrugated paperboard body is prepared from a plurality of layers of single-layer corrugated paperboards sprayed or dipped with a waterproof and dampproof agent by binding through an waterproof adhesive; the upper and lower surfaces of the corrugated paperboard body are provided with buffer layers; and the waterproof and dampproof agent is composed of the following raw materials by weight: 20 to 35 parts of dodecyl dimethyl benzyl ammonium chloride, 30 to 40 parts of octamethylcyclotetrasiloxane, 18 to 25 parts of sodium acrylate, 30 to 40 parts of N-isopropylacrylamide, 10 to 15 parts of butadiene, 10 to 15 parts phenyl diene, 5 to 10 parts of isproportionated potassium rosinate, 30 to 40 parts of trimethylol propane triacrylate, 20 to 30 parts of stearin, 3 to 10 parts of a pH regulator and 50 to 80 parts of water.

The invention discloses a kind of hydrophobic association polyacrylamide and its preparative method. The product is the copolymer of acrylamide and dendritic I branch-like hydrophobic monomers, in which, the amount of monomeric unit of acrylamide is integer of 124013~139860, the amount of monomeric units of dendritic hydrophobic monomers is integer of 140~6527. In the invention, high degreed branching hydrophobic monomers are inlet on a chain of macromolecules by the way of micelles' copolymerization, the monomers can promote the capability of hydrophobic interaction of polymers' chain without any curling for its greater hydrophobic volume, so a better viscosity can be achieved. The content of the hydrophobic chain can be controlled by the way of controlling the amount of hydrophobic monomers to improve the solubility of copolymer

The invention discloses a cell cultivation model for artificial cornea reconstruction. The cell cultivation model comprises a carrier bracket for cell cultivation and a supporting shell for supporting the carrier bracket. According to the designed model, firstly the carrier bracket is fixed to the supporting shell made of silica gel, then the carrier bracket is placed in a culture dish for cell cultivation, the supporting shell has a good supporting function on the carrier bracket, especially a thin-layer bracket, and the carrier bracket can be not prone to displacement and curl in the cultivation process.

The invention provides a hyper-branched macromolecular flocculation demulsifying agent, which has the characteristics of many terminated functional group, high dissolubility and low viscosity. The hyper-branched macromolecular flocculation demulsifying agent is not liable to bend in a saline medium and has large hydrodynamic radius, high flocculation capability and high flocculation speed. Meantime, the hyper-branched macromolecular flocculation demulsifying agent has a good demulsifying effect on oil-water emulsion due to the branched structure and high electric charge density.

The invention discloses a cell plantation model for artificial cornea reconstruction. The cell plantation model comprises a carrier support for cell plantation and a supporting shell for supporting the carrier support. According to the designed model, the carrier support is firstly fixed into the supporting shell made of silica gel and then placed in a culture dish for conducting cell plantation, and the supporting shell has a good supporting function for the carrier support, especially a thin-layer support, so that the carrier support is not prone to displacement and curling in the plantation process.

The invention provides an acrylamide copolymer, as well as a preparation method and an application thereof. The acrylamide copolymer comprises a structural unit as shown in a formula (1) and a structural unit as shown in a formula (2), wherein R1 and R2 are respectively hydrogen or alkyl of C1-C4 independently, R3 is alkyl of C1-C8, and M1 and M2 are respectively at least one of hydrogen, potassium and sodium independently; based on the total mole number of the structural units in the acrylamide copolymer, the content of the structural unit as shown in the formula (1) is 30-99 molar percent, the content of the structural unit as shown in the formula (2) is 1-70 molar percent; and the viscosity-average molecular weight of the acrylamide copolymer is 31-37 millions. A temperature-resistance salt-resistance product prepared from the acrylamide copolymer has the characteristic of high molecular weight, and the acrylamide copolymer has an advantage of greatly thickening, and can be used as an oil-displacing agent for tertiary recovery of a high temperature and high salinity reservoir.

The invention relates to a graft-modified polyacrylamide and a preparation method thereof, and is used for mainly solving the problems in the prior art that polyacrylamide has poor temperature resistance, poor salt resistance, poor aging resistance and poor displacement efficiency. The graft-modified polyacrylamide has the chemical formula of HPAM-g-R, wherein HPAM is an ultra-high molecular weight polyacrylamide, R is selected from one of PEO-b-PNAM, PPO-b-PNAM, P(EO-r-PO)-b-PNAM, PEO-b-PPO-b-PNAM or PPO-b-PEO-b-PNAM, EO represents epoxy ethane, PO represents propylene oxide, PEO represents polyethylene oxide, PPO represents polypropylene oxide, and PNAM represents poly(N-substituted acrylamide); the viscosity average molecular weight of the graft-modified polyacrylamide is not less than 27000000; the preparation method is provided. Through adopting the above technical schemes, the problems are relatively well solved, and the graft-modified polyacrylamide can be used in industrial production of a polymer oil-displacing agent and in oil displacement of a high-temperature high-salinity oil reservoir.

The invention relates to an acrylamide monomer and a preparation method, the method comprises the following steps: contacting 3-methyl-2-butylene, a sulfonating agent and acrylonitrile for 1-4 hours under -5-15 DEG C to obtain the acrylamide monomer in a formula (I). The invention also relates to the acrylamide copolymer, the preparation method and the application. The preparation method comprises the following steps: under the condition of a solution polymerization reaction, under the existence of an initiator, a monomer mixture is performed with polymerization, the monomer mixture contains acrylamide and a monomer C, the viscosity-average molecular weight of the obtained after polymerization is more than 30 million by the condition of the solution polymerization reaction. The acrylamide copolymer is capable of resisting high temperature, and has good viscosifying effect under high ore degree, can be widely used in petroleum chemical field, and can especially be a displacement agent for three-time oil extraction oil. (img file='DDA00002332890900011.TIF' wi='747' he='220' / ) is formula (I).

The invention relates to an acrylamide monomer and a preparation method. The method comprises the following steps: contacting styrene, a sulfonating agent and acrylonitrile for 1-4 hours under -5-15 DEG C to obtain the acrylamide monomer. The invention also relates to the acrylamide copolymer, a preparation method and an application. The preparation method comprises the following steps: under the condition of a solution polymerization reaction, under the existence of an initiator, a monomer mixture is performed with polymerization, the monomer mixture contains acrylamide and a monomer C, and the viscosity-average molecular weight of the obtained after polymerization is more than 30 million by the condition of the solution polymerization reaction. The acrylamide copolymer is capable of resisting high temperature, and has good viscosifying effect under high ore degree, can be widely used in petroleum chemical field, and can especially be a displacement agent for three-time oil extraction oil.

The invention discloses chorion decellularizing liquid, which is prepared from the following ingredients: 0.5 to 1 part of dodecyl sodium sulfate, 0.5 to 2 parts of polyoxyethylene octyl phenyl ether, 3 to 6 parts of sodium chloride, 1 to 3 parts of DNAse (Deoxyribonuclease), 0.1 to 0.5 part of protease inhibitors and 0.4 to 1.2 parts of trypsinase. The chorion decellularizing liquid has the advantages that the defect that a chorion decellularizing preparation lacks in the prior art is overcome; by regulating the formula of the decellularizing liquid, a chorion product obtained through preparation reserves natural gaps and a fiber mesh structure; cell attachment is easy; curling cannot easily occur; the commercialized production is convenient; and the chorion decellularizing liquid can be widely popularized and applied.

The invention discloses a cell implantation model for artificial corneal reconstruction. The cell implantation model comprises a carrier stent for cell implantation and a support housing for supporting the carrier stent. The carrier stent of the model designed in the invention is fixed in the support housing made of a silica gel material, and then is placed in a culture dish for cell implantation; the support housing has good supporting effect on the carrier stent, especially thin-layer stents, so that the carrier stent is unlikely to shift and curl during implementation.

The invention discloses a high-safety self-stabilizing skateboard for ski training, which belongs to the field of ski training. A high-safety self-stabilizing skateboard for ski training is provided with a plurality of elastic curly self-stretching airbags, which can be used during the skiing process. In the process, air can be quickly poured into the self-expanding airbag, so that the self-expanding airbag is deployed. When the self-expanding airbag is fully deployed, under the action of air extrusion, the self-extending interlayer gradually stretches out from the self-expanding airbag, making the self-expanding airbag Adjacent multiple magnetic hairs gradually approach each other, and finally attract each other, so that multiple self-stretching airbags are integrated to form self-maintaining and stable wings. Compared with the existing technology, it can significantly increase the stability of the ski when it is vacated, effectively ensuring The personal safety of beginners reduces potential safety hazards. At the same time, when landing, the air overflowing from the self-stretching airbag can buffer the falling of the skateboard, thereby improving the stability when landing and further ensuring safety.

The invention discloses a composite rock slice slurry. The composite rock slice slurry comprises a component A and a component B, and the component A comprises, by weight, 2-15 parts of a pigment slurry, 5-25 parts of a zeolite liquid and 30-90 parts of an aqueous hydroxypropene dispersion; the pigment paste comprises a pigment, a coupling agent and a directional agent; the zeolite liquid comprises a zeolite powder, a hydrophobic agent and a wetting agent; the component B comprises 70-90 parts by weight of a water-dispersible isocyanate curing agent; and a weight ratio of the component A to the component B is (5-7):1. The pigment slurry, the zeolite liquid, the aqueous hydroxypropylene dispersion and the water-dispersible isocyanate curing agent synergistically act according to a certain ratio to form the composite rock slice slurry, and composite rock slices prepared from the composite rock slice slurry have the characteristics of excellent wear resistance, excellent water resistance,excellent color retention, short curing time, no after-tack and good storage stability.

The invention relates to an acrylamide monomer and a preparation method. The method comprises the following steps: contacting styrene, a sulfonating agent and acrylonitrile for 1-4 hours under -5-15 DEG C to obtain the acrylamide monomer. The invention also relates to the acrylamide copolymer, a preparation method and an application. The preparation method comprises the following steps: under the condition of a solution polymerization reaction, under the existence of an initiator, a monomer mixture is performed with polymerization, the monomer mixture contains acrylamide and a monomer C, and the viscosity-average molecular weight of the obtained after polymerization is more than 30 million by the condition of the solution polymerization reaction. The acrylamide copolymer is capable of resisting high temperature, and has good viscosifying effect under high ore degree, can be widely used in petroleum chemical field, and can especially be a displacement agent for three-time oil extraction oil.

The invention provides a brominated SBS product with a narrow molecular weight distribution and high thermal stability and a preparation method thereof, comprising the following steps: mixing, dissolving, adding dropwise, terminating the reaction and separating, and extracting; said mixing, TBAB and Br 2 The mixture 25.64g and DCM 100g are mixed, obtain material; The TBAB and Br 2 The mol ratio is 1:1, the obtained brominated SBS product of the method of the present invention, 1% thermogravity loss temperature is 230 ℃, 5% thermogravity loss 245 ℃, 10% thermogravity loss 255 ℃, 50% thermogravity loss 280 ℃, bromine The content is 66%. The preparation method of the present invention has stable and easy-to-obtain raw materials, simple process, easy operation, and low cost, which is conducive to popularization and application, and can effectively reduce or eliminate the content of polymers and ultra-high molecular polymers in the copolymer , greatly improving the purity of brominated SBS products, and improving the comprehensive physical and mechanical properties of brominated SBS copolymers.

An object of the present invention is to provide a method for manufacturing a package for an optical member in which at least an adhesive layer and a surface protective film are provided on a polarizing film, the package being less likely to curl when the optical member is attached to a cell substrate such as a liquid crystal cell. The method for manufacturing a package for an optical member according to the present invention is characterized by comprising: a step A of providing a protective film on one side or both sides of a polarizing plate via an adhesive layer to produce a polarizing film; a step B of at least arranging an adhesive layer and a surface protective film on the polarizing film to manufacture an optical component; and a step C of packaging the optical member, wherein whenthe equilibrium moisture content of the polarizing film in the optical member from the time when the package is unpacked to the time when the optical member is bonded to the unit substrate is X% by weight, the moisture content Y% by weight of the polarizing film in the optical member is adjusted so that the moisture content Y% by weight is not less than the equilibrium moisture content X% by weight in the step C.

The invention relates to a preparation method of a high-temperature-resistant high-salt polymer oil-replacement agent, which comprises the following steps: dissolving 10-20 parts by weight of anionic monomer, 50-65 parts by weight of sodium allylsulfonate, 11-22 parts by weight of cationic monomer, 2-4 parts by weight of acrylate, 0-3.5 parts by weight of alpha-alkene and 50-60 parts by weight ofacrylamide in deionized water, wherein the total mass concentration of the monomers is 15-23%; adding a surfactant which accounts for 1-5% of the total weight of the monomers, regulating the pH valueof the solution to 9-10, introducing ammonia gas at 30-60 DEG C for 30 minutes, and adding a persulfate initiator which accounts for 0.05-0.1% of the total weight of the monomers; and reacting at 30-60 DEG C for 12 hours, precipitating with acetone, washing, and carrying out vacuum drying to obtain the white powdery polymer. The invention is characterized in that long-carbon-chain alkyl group, anionic and cationic unit structures are introduced into the water-soluble polymer macromolecules to obtain the high-temperature-resistant high-salt water-soluble polymer oil-replacement agent.

The invention provides a hyper-branched macromolecular flocculation demulsifying agent, which has the characteristics of many terminated functional group, high dissolubility and low viscosity. The hyper-branched macromolecular flocculation demulsifying agent is not liable to bend in a saline medium and has large hydrodynamic radius, high flocculation capability and high flocculation speed. Meantime, the hyper-branched macromolecular flocculation demulsifying agent has a good demulsifying effect on oil-water emulsion due to the branched structure and high electric charge density.

The invention discloses an acrylamide copolymer, and a preparation method and an application thereof. The acrylamide copolymer has structural units represented by a formula (1) and structural units represented by a formula (2). As the total mole number of the structural units in the acrylamide copolymer as a reference, the content of the structural units represented by the formula (1) is 1-99mol% and the content of the structural units represented by the formula (2) is 1-99mol%. The viscosity average molecular weight of the acrylamide copolymer is 30-35.5 million. The acrylamide copolymer provided by the invention can resist high temperature, and has a good thickening effect under high mineral degree. The acrylamide copolymer can be widely applied in the field of petrochemical industry, especially as a tertiary recovery oil displacement agent.

The invention provides a hydrophobic polymer graft-modified acrylamide polymer and a preparation method thereof, which mainly solves the problems of poor temperature resistance, salt resistance, aging resistance and poor displacement effect of the general-purpose acrylamide polymer in the prior art. The present invention adopts a hydrophobic polymer to graft and modify the acrylamide polymer, and the general chemical formula is: P- g -X, wherein, P is polyacrylamide or acrylamide copolymer, X is a hydrophobic polymer with a molecular chain structure of homopolymerization, random copolymerization or block copolymerization, and the viscosity-average molecular weight of the graft compound ≥ The technical scheme of 17 million and its preparation method better solves this problem and can be used in industrial production and oil flooding of oil reservoirs.