840 results about "Sizing" patented technology

The invention discloses a straw paper mulching film based on thermo-mechanical pulp as well as a green preparation method and application of the straw paper mulching film. The invention belongs to the field of biomass resource utilization. Aiming at the defects in the prior art, the invention provides a green preparation method of a straw paper mulching film based on thermo-mechanical pulp. According to the method, the staged hydrothermal grinding technology is adopted, washing is not needed, the acidic paper pulp is directly obtained, and the technological process is simplified. Meanwhile, the invention innovatively develops a green sizing agent taking chitosan as a main material. The sizing agent can be directly fused with acidic paper pulp, and acid and alkali do not need to be additionally added for adjusting the pH value. The dry tensile index of the straw paper mulching film is larger than or equal to 15 N.m / g, the wet tensile index is larger than or equal to 5 N.m / g, the burst index is larger than or equal to 3.5 kPa.m < 2 > / g, the contact angle is larger than or equal to 105 degrees, and the 2-hour water absorption rate is smaller than or equal to 50%.

The present invention discloses a tensile and wear-resistant washed kraft paper and its preparation process, which relates to the technical field of kraft paper. The process includes the following steps: Step 1: Add color paste, waterborne acrylic resin, preservative, reinforcing agent, softening agent, curing agent, and waterproofing agent into a solvent in sequence and stir evenly to obtain a sizing slurry; Step 2: Coat the sizing slurry on the base paper, and successively perform extrusion, ultraviolet light irradiation, first drying, ironing, and second drying to obtain the tensile and wear-resistant washed kraft paper. In this application, by preparing specific reinforcing agent and waterproofing agent and introducing them into the sizing slurry for sizing, the interfacial action between the sizing slurry and the base paper is effectively improved, thereby improving the tensile and wear resistance of the washed kraft paper while enhancing the flame retardant performance; it can achieve the purpose of replacing plastic, leather, and cloth with paper.

The invention discloses a film transfer and immersion type dual-purpose sizing machine, and relates to the technical field of sizing machines, the film transfer and immersion type dual-purpose sizing machine comprises a sizing machine shell, an upper sizing roller is arranged at the upper end of the interior of the sizing machine shell, a lower sizing roller is arranged at the lower end of the interior of the sizing machine shell, and sizing beams are arranged at the front end and the rear end of the interior of the sizing machine shell; and a filtering mechanism for treating glue is arranged in the collecting box. According to the membrane transfer and soaking type dual-purpose sizing machine, scraped glue is discharged through a discharging pipe and collected through a collecting box, after glue collection, the glue is filtered through a filter screen and collected to the lower end of the interior of the collecting box, and after the glue is adsorbed through the capillary action of paper, dust on the surface of the paper can be left in the glue; and the glue is filtered through the filter screen, so that the quality of the glue during recycling is guaranteed, and the overall stability during use is improved.

The invention relates to the technical field of composite materials, in particular to a carbon fiber composite material with both interface performance and damping performance and a preparation method of the carbon fiber composite material. The invention relates to a carbon fiber composite material with interfacial properties and damping properties. The carbon fiber composite material is prepared from the following components in percentage by weight: 65-75% of carbon fibers, 25-35% of a modified butyl rubber resin matrix, 0.5-2% of a butyl rubber film, 0.5-1% of a polyurethane-based sizing agent and 0.1-0.5% of a silane coupling agent, the in-situ growth CNTs technology is adopted, the shearing strength of a fiber-resin interface can be remarkably improved, meanwhile, the butyl rubber film is embedded into every two layers of carbon fiber prepreg of a sandwich structure, directional energy dissipation is achieved through controllable shearing deformation, excellent environmental stability is achieved, the damping performance and interface performance loss after damp-heat aging is lower than 15%, and the damping performance and the interface performance loss after damp-heat aging are lower than 15%. The industrial problem that a traditional carbon fiber composite material is strong but not tough and rigid but not soft is successfully solved, and the carbon fiber composite material is particularly suitable for application requirements of high-end competitive sports equipment.

The invention discloses a production process of high-folding-resistance corrugated base paper, and particularly relates to the technical field of corrugated paper production. The process comprises the following steps: mixing and hydraulically pulping different types of waste paper raw materials to obtain original waste paper pulp with the concentration of 2.5-2.8%; original waste paper pulp enters a classifying screen after being subjected to high-concentration sand removal, coarse screening and low-concentration sand removal, and fibers in the waste paper pulp are screened into long fibers and short fibers; mixing the long fiber pulp and the short fiber pulp in proportion, and carrying out papermaking and surface sizing treatment; wherein the papermaking comprises the steps of forming a net part, squeezing and dehydrating, and drying in a pre-drying part to obtain initial corrugating base paper with the dryness of 90-92%, then carrying out surface sizing treatment on the initial corrugating base paper by using a boiled glue solution, drying at 60-100 DEG C until the dryness is 85-92%, and curling and slitting to obtain the high-folding-resistance corrugating base paper. Stable production of the high-folding-resistance corrugated base paper is achieved through raw material diversification, fiber refining treatment, papermaking process flexible regulation and control and glue solution accurate preparation.

The invention belongs to the technical field of pipe manufacturing, and particularly relates to a manufacturing method of a surface-traceless water supply steel wire mesh reinforced polyethylene composite pipeline, which comprises the following steps: core layer extrusion molding, core layer vacuum cooling shaping, steel wire winding, outer layer PE raw material covering, internal pressure sizing and gradient cooling, code spraying, cutting and sealing. The gradient cooling is divided into three stages of cooling, the first stage is pre-cooling shaping and warm water spraying pre-cooling, shock cooling hardening of the surface of a melt is avoided, meanwhile, internal pressure sizing is conducted on the pipe, the pipe wall is made to be tightly attached to a sizing sleeve through internal air pressure, and concave-convex marks of the steel wire mesh composite pipe are eliminated; gradient cooling is adopted in the second stage, multi-stage water tank segmented cooling is adopted, and the temperature of each stage of water tank is adjusted; and the third stage is post-cooling treatment, low-temperature aerial fog cooling is adopted to further eliminate internal thermal stress, and the temperatures of the first stage, the second stage and the third stage are gradually reduced. The melt flow stress can be eliminated, the crystallization rate is controlled, the internal thermal stress is eliminated, and the pipe quality is ensured.

The invention discloses a high-toughness PPR pipe machining device which comprises an extrusion system, a pulsation mixing system, a melt online monitoring device, a sizing cooling system, a traction device and a winding device. The extrusion system is used for melting and conveying raw materials, and the pulsation mixing system is used for deeply mixing a melt by utilizing a periodic disturbance structure, so that a toughening agent and a copolymerization component are more uniformly dispersed in the melt. The melt on-line monitoring device can detect the temperature, pressure and dispersity of the melt in real time, so that the extrusion process is monitorable. The sizing cooling system adopts a subsection cooling mode of rapid cooling, constant-temperature slow release and low-temperature shaping, and stable shape control is achieved through vacuum sizing. The traction device and the winding device are used for keeping the production rhythm stable and achieving continuous winding of the formed pipe. According to the invention, the melt mixing quality can be improved, the cooling internal stress is reduced, and the toughness and dimensional stability of the PPR pipe are improved.

The invention provides a raw material composition of an enhanced surface sizing agent for corrugated paper. The raw material composition comprises the following components in parts by weight: 2-10 parts of starch, 0.01-4 parts of amylase, 0.01-3 parts of carboxymethylcellulose and 5-30 parts of sodium sulfate. The invention also provides a preparation method of the enhanced surface sizing agent for corrugated paper, which adopts the raw material composition and specifically comprises the following steps: adding starch into a reactor, heating to a reaction temperature, and adding amylase for gelatinization reaction; after gelatinization is finished, reducing the temperature to room temperature, adding carboxymethyl cellulose, and stirring to fully mix the carboxymethyl cellulose and the carboxymethyl cellulose; adding sodium sulfate into the reactor, and fully stirring and reacting to obtain the enhanced surface sizing agent for the corrugated paper. The surface sizing agent is prepared by gelatinizing and modifying starch and adding carboxymethyl cellulose and sodium sulfate, and the surface strength of paper can be remarkably improved when the product is applied to corrugated paper. The preparation method is simple and obvious in effect.

The invention discloses a preparation technology of collection paper literature deacidification test paper, and belongs to the technical field of papermaking engineering. The method comprises the following steps: firstly, determining physicochemical indexes of the deacidification test paper according to ontology characteristics of precious ancient books and recent modern paper literatures, then taking saponified rosin size as an internal sizing agent, taking talcum powder as a filler, taking cationic polyacrylamide (CPAM) as a retention aid, and finally, carrying out papermaking and drying to obtain the deacidification test paper. The performance of the product prepared by the process is basically consistent with that of recent modern literature paper, the product has the capability of replacing a paper literature body to carry out lossy testing, and a more reliable, more comprehensive and more economical basis can be provided for constructing a deacidification effect evaluation system.

The invention discloses an acid-neutral nano PHA paperboard reinforcing agent as well as preparation and application thereof, and belongs to the technical field of papermaking chemicals. The reinforcing agent is a bio-based nano water-based emulsion, and the core of the reinforcing agent is that a stable high-positive-charge nanoparticle interface is constructed under an acid-neutral window through the synergistic effect of polyphenol and an amine polymer. The environment-friendly wet strength agent solves the potential safety hazard of the traditional wet strength agent, and does not contain free formaldehyde and epichlorohydrin. The method has the outstanding advantages that the method is completely compatible with a modern papermaking acid-neutral process, and the defect that the similar bio-based technology needs to react under alkalinity is overcome; the adhesive is flexible to apply, can be efficiently used for wet end addition, or can be stably compounded with oxidized starch for surface sizing; the preparation method is simple, efficient and energy-saving, can realize excellent wet strength retention rate and dry strength improvement under the conditions of low addition amount and conventional industrial drying at 105 DEG C, and does not need extra high-temperature curing.

The invention discloses a method for solving linting and dusting during paperboard printing, and belongs to the technical field of papermaking. Comprising the following detailed steps: a slurry preparation process, surface sizing treatment and a drying and curing process, in the slurry preparation process, various high-quality fiber raw materials are carefully selected and mixed, the proportion of various fibers is accurately controlled according to the expected performance and quality requirements of the paperboard, and meanwhile, a proper amount of auxiliaries are added; and the binding force between the fibers and the strength of the paper are enhanced. The raw material ratio in the paperboard production process is precisely regulated and controlled, the specially-made composite surface sizing agent is adopted for surface treatment, and scientific and reasonable drying and curing processes are matched, so that the problems of linting and powdering of the paperboard in the printing process are effectively solved, and the printing quality and the production efficiency of the paperboard are improved.

The invention discloses a rubber flat cable extruding machine head, which belongs to the technical field of cable forming and comprises a machine head jacket, a runner body and a mold core. And the runner body is sleeved in the machine head outer sleeve. The mold core is sleeved with the runner body, and an adjusting piece is arranged between the mold core and the end face of the runner body. The adjusting piece is arranged between the tail end of the mold core and the end face of the runner body, and the core function of the adjusting piece is to accurately adjust the position of the mold core in the axial direction. By adjusting the axial position of the die core, the relative distance between the front end of the die core and the inner opening of the flat die sleeve can be changed, and the distance is a key area of sizing materials from shunting to converging and shaping and directly affects pressure distribution and flow speed of the sizing materials. Through fine adjustment, the flow and the pressure of the sizing material in each area of the flat die sleeve, especially narrow areas on two sides with larger resistance and an open area in the middle can be ensured to be close to balance, so that a flat cable with uniform thickness, full edge and width conforming to design can be extruded.

The present invention discloses a pattern leather fabric production process, which mainly comprises five steps of raw material preparation, slurry coating, fabric compounding, curing and curing, and peeling, the base cloth is subjected to pre-shaping and corona treatment to enhance the binding force, the coating slurry is composed of vinyl silicone rubber, hydrogen silicone oil, a platinum catalyst and other environmental protection materials, and the coating slurry is prepared through vacuum stirring. The release paper with the lines forms a pattern coating through gravure or rotary screen coating, the pattern coating is subjected to hot-pressing compounding with the base cloth after being pre-cured, the composite fabric is cured and cured in an online or offline mode, and finally the release paper is stripped to obtain a finished product. The invention relates to a fabric production process which can be used for producing high-grade and breathable products.

The invention relates to the technical field of protective materials and preparation thereof, and provides a multi-penetration-resistant ceramic armor array structure and a preparation method thereof.The multi-penetration-resistant ceramic armor array structure comprises a plurality of carbon-ceramic units arranged in an array mode, the space between the multiple carbon-ceramic units is filled with B4C powder in a cold pressing mode, and molten aluminum permeates into the space between the multiple carbon-ceramic units through pressure; the carbon-ceramic unit is formed by stacking pure ceramic layers and sizing carbon fiber cloth with different thicknesses in a gradient mode. The preparation method comprises the steps that S1, the carbon-ceramic unit is designed and prepared; s2, designing and preparing a preform blank; and S3, designing and preparing a ceramic protection array structure. The preparation method has the beneficial effects that the carbon fiber toughened ceramic is used as a main body material, a high-toughened carbon ceramic structure is designed by adopting a gradient array, the toughness-matched ceramic composite material module suitable for projectile impact is prepared by adopting a pressure infiltration integrated forming technology, and the multi-elastic resistance of the ceramic composite material module is improved on the premise that the composite protection weight is not increased.

The invention discloses an efficient sizing machine paper guide loop, and relates to the technical field of sizing machines, the efficient sizing machine paper guide loop comprises a rack, and the output end of a stepping motor is connected with a conveying mechanism for adjusting tension; an air flotation steering gear is arranged on the inner side face of the machine cabinet, an adjusting roller is arranged on the outer surface of the air flotation steering gear, and supports are arranged on the two sides of the connecting rod. A roller is arranged on the outer surface of the paper strip, a supporting seat is arranged on the outer surface of the roller, and transmission cylinders in the same group are arranged on the outer surface of the supporting seat and used for driving a paper guiding mechanism. According to the efficient paper injection loop for the sizing machine, paper strips are driven to be conveyed through the arranged conveying mechanism, the angle of the arranged air flotation steering gear is adjusted to be 90 degrees during conveying, so that the paper strips run upwards, and the tensioning amplitude of the paper strips during conveying is guaranteed under the mutual cooperation of the conveying mechanism, the air flotation steering gear and the paper injection mechanism; the influence on the processing efficiency due to too loose paper strips or too long adjustment time is avoided.

The utility model relates to the field of sizing agent preparation, discloses a mixing device for preparing a water-resistant enhanced sizing agent, and solves the problems that the existing mixing device for preparing the water-resistant enhanced sizing agent is poor in material distribution effect, easy to cause material blockage and stacking and poor in mixing effect due to too much one-time feeding. Through the bevel gear, the material distributing plate, the ball body, the opening, the protruding rod, the clockwork spring, the gear, the first rack, the movable plate, the connecting plate, the spring and the filter screen, raw materials are classified according to particle shapes and powder shapes and are fed through the feeding barrel and the feeding frame; granular raw materials are uniformly and intermittently added into the main tank body through the stirring device and the intermittent feeding mechanism in the feeding barrel, meanwhile, powdery raw materials enter the main tank body through the feeding frame, blocky materials are removed through screening of the screens, and the blocky powder materials accumulated on the screens are extruded and scattered through the two sets of movable filter screens. The uniformity and the mixing quality of the raw materials are ensured.

The invention relates to the technical field of oriented strand boards, and discloses a fine-surface oriented strand board and a preparation method thereof.The fine-surface oriented strand board sequentially comprises a surface layer, a core layer and a surface layer, and the fine-surface oriented strand board is prepared by conducting sizing, oriented paving, pre-pressing and hot pressing on wood shaving raw materials of all the layers; wherein the raw material of the surface layer is surface layer fine wood shavings, and the surface layer fine wood shavings are glued through an isocyanate adhesive with the mass fraction of 6% and a urea aldehyde acid ester adhesive with the mass fraction of 8-12%; the raw material of the core layer is core layer large-sheet wood shavings, and the core layer large-sheet wood shavings are glued by an isocyanate adhesive with the mass fraction of 4-6% and a paraffin emulsion with the mass fraction of 0.5-2%. According to the method, the isocyanate adhesive and the urea-formaldehyde resin adhesive are synchronously applied to the surface layer fine shavings, and the paraffin emulsion is only applied to the core layer large shavings, so that the surface bonding strength of the FOSB is higher, meanwhile, the 24-hour TS of the FOSB is lower, and the internal bonding strength and the bending strength can both meet the use requirements.

The invention discloses a manufacturing method of a high-strength and high-toughness X65QL long-distance conveying seamless line pipe in a low-temperature environment. The X65QL long-distance conveying seamless line pipe comprises the following chemical components in percentage by weight: 0.8-0.12% of C, 0.15-0.45% of Si, 1.10-1.50% of Mn, 0.04-0.07% of V, 0.005-0.020% of Ti, 0.005-0.045% of Al, less than or equal to 0.018% of P, less than or equal to 0.008% of S and the balance of Fe and impurity elements. The manufacturing process comprises the steps of annular furnace heating, perforating through a perforating machine, PQF hot continuous rolling, pipe removing, sizing, cooling bed cooling, saw cutting, straightening, quenching and tempering heat treatment, flaw detection, water pressing and packaging and warehousing. Through the composite synergistic effect of V and Ti and the subsequent quenching and tempering heat treatment process, the technical requirements of the high-strength and high-toughness X65QL seamless pipeline steel pipe for long-distance conveying in the low-temperature environment are met.

The present invention discloses a preparation method of a low-resin mica tape by hot pressing. This method uses epoxy resin and hyperbranched polyester resin to prepare a sizing material, dilutes part of the sizing material to obtain a diluted sizing material, uses a silicon chloride-acetone solution to treat a reinforcing fiber fabric and reinforcing fiber filaments respectively to obtain a modified reinforcing fiber fabric and modified reinforcing fiber filaments, then adds silicon chloride to the diluted sizing material to impregnate the modified reinforcing fiber fabric to obtain a reinforcing material layer, and at the same time takes a base sizing material and adds modified reinforcing fiber filaments to obtain an adhesive; the adhesive is coated on one or both sides of a mica paper substrate to obtain an adhesive layer, the reinforcing material layer is laid flat on the surface of the adhesive layer, and after two roller pressings, it is dried, slit, and wound up to obtain a finished low-resin mica tape. The mica tape prepared by the method of the present invention has a low resin content and has better VPI process performance.

The invention relates to the technical field of honeycomb paperboard production, in particular to a honeycomb paperboard gluing process and processing equipment thereof, and the honeycomb paperboard gluing process comprises the following steps: S1, paper core feeding and drying, S2, double-sided coating, S3, composite lamination, S4, drying and curing, and S5, cutting and tidying. The honeycomb paperboard processing equipment used in the gluing process of the honeycomb paperboard comprises the drying box, the synchronous swing mechanism for conducting reciprocating torsion swing on the honeycomb paper cores is arranged in the drying box, the upper layer honeycomb paper cores and the lower layer honeycomb paper cores are driven by the synchronous swing mechanism to conduct synchronous torsion swing, eddy currents are formed in the drying box, and therefore the honeycomb paper cores are evenly distributed in the drying box. The contact area of the honeycomb paper core and hot air is increased, in the synchronous swinging process, spin-drying of the honeycomb paper core is achieved, the drying efficiency is further improved, reciprocating swinging glue spraying is conducted through the reciprocating glue spraying mechanism, rolling coating is conducted through the rolling gluing mechanism, and gluing is more uniform through cooperation of the reciprocating glue spraying mechanism and the rolling gluing mechanism.

The invention relates to an extra-thick-wall square and rectangular pipe production line and a production process thereof, and belongs to the field of hot-rolled steel pipe rolling equipment in the ferrous metallurgical industry. Comprising a steel pipe feeding rack used for feeding pierced billets; the heating device is used for heating the pierced billet, so that the pierced billet can deform; the diameter reducing unit is used for performing diameter reducing rolling on the heated pierced billet to change the diameter of the pierced billet and the thickness of the wall of the pierced billet; and the square and rectangular pipe forming rack is used for carrying out forming rolling on the pierced billets subjected to diameter reduction, so that the pierced billets form the square and rectangular pipes. An existing hot-rolling seamless steel pipe production line or an existing seamless steel pipe is utilized, a round-to-square forming rack is additionally arranged behind a sizing and reducing mill, and a round-section steel pipe is gradually changed into an arc-side-length-section steel pipe and finally changed into a square-rectangular-section steel pipe. The method solves the problems that an existing hot rolling process is difficult to mold the extra-thick-wall square and rectangular pipe, and the corner arc radius cannot reach the standard, and the seamless steel pipe can still be produced when the production line does not produce the square and rectangular pipe, so that the production cost of the extra-thick-wall square and rectangular pipe is greatly reduced.

The present invention belongs to the technical field of textile printing and processing. The present invention discloses a digital direct injection printing process for two-acetate fiber without steaming and washing. The digital direct injection printing process for two-acetate fiber of the present invention comprises the following steps: sizing treatment, pre-drying, inkjet printing and baking are sequentially carried out on a two-acetate fiber grey cloth to obtain an inkjet printed fabric. The present invention only needs to complete the printing of the acetate fiber grey cloth through sizing treatment - pre-drying - inkjet printing - baking, without steaming. During the baking process, the dye ink quickly diffuses into the acetate fiber to complete the coloring process. The solid content of the thickener is low, and there is no need for water washing after printing, and the baking time is short, which greatly saves resources and energy.

The invention discloses an FRP daylighting panel with high impact resistance and a preparation method of the FRP daylighting panel, and relates to the technical field of FRP daylighting panels. The FRP daylighting panel comprises a surface film, a gel coat layer, a matrix layer and a bottom film which are arranged in sequence, the matrix layer is formed by heating and curing a matrix resin material which fully infiltrates a modified composite yarn felt, and the modified composite yarn felt is prepared by soaking and modifying glass fibers with a modified impregnating compound. According to the invention, the acrylate film-forming agent is matched with the silane coupling agent to prepare the modified impregnating compound, and the glass fibers are modified, so that the light transmittance of the FRP daylighting panel paved with a multi-layer glass fiber structure can be effectively improved, and the FRP daylighting panel is enabled to have relatively high light transmittance and good impact resistance at the same time. In addition, by additionally arranging the gel coat layer, the weather resistance of the FRP daylighting panel can be prolonged, and the FRP daylighting panel can still keep high impact resistance after being used for a long time.

The invention discloses a fiber synergistic copolymer as well as a preparation method and application thereof, and belongs to the technical field of papermaking chemicals and high polymer materials. Aiming at anion garbage interference caused by deepening of closed circulation of white water in the papermaking industry and green compliance challenges caused by replacing plastic with paper, the copolymer adopts a specific polycarboxylic acid and trace cationic monomer structure-effect design, and has excellent anti-interference capability and permeability. In the wet-end in-pulp enhancement, the enhancement effect of the additive can be superior to that of a traditional high-molecular-weight additive only by a relatively low addition amount, and water filtration and retention are remarkably improved; in a surface sizing and pulp molding hot pressing process, the rigidity and the water-resistant size stability of a product can be greatly improved through a unique cross-linking mechanism. According to the scheme, the industrial pain point of low enhancement efficiency in a complex environment is effectively solved, and the product does not contain organic fluorine and completely meets the requirements of environmental protection and sustainable development of a high-performance fiber-based material.

The injection mold comprises a forming assembly and a sprue, the forming assembly comprises a first mold core and a second mold core, a cavity is defined when the first mold core and the second mold core are closed, and a through hole penetrating through the thickness direction of the second mold core is formed in the second mold core; the sprue is provided with a feeding channel and a side sprue which is communicated with the feeding channel and penetrates through the sprue, the side sprue is located on the side face of the sprue, and the sprue is slidably arranged in the through hole in the thickness direction of the second mold core so as to be switched between a first position and a second position; at the first position, the side gate of the sprue is communicated with the cavity, and a sizing material can enter the cavity from the feeding channel; in the demolding process, the sprue can move from the first position to the second position, and redundant rubber formed in the side sprue can be cut off by the second mold core.

The invention discloses an environment-friendly wide-temperature-range adhesive tape with a high-toughness structure and a preparation method of the environment-friendly wide-temperature-range adhesive tape, and belongs to the technical field of high-performance composite materials. The core-shell particles with the soft core-hard shell structure are added, the core layer is composed of the elastic polymer with the glass transition temperature lower than-20 DEG C, the shell layer is the rigid polymer with the glass transition temperature higher than 60 DEG C, and the wide temperature range self-adaption of the high-toughness structure adhesive tape to summer and winter environments is achieved through the synergistic effect of temperature-sensitive characteristics. In a summer high-temperature environment, the rigid shell layer plays a microscopic scaffold effect and a physical cross-linking strengthening effect and inhibits flowing permeation of a sizing material to micropores of the release paper. And in a low-temperature scene in winter, the elastomer of the core layer still maintains high elasticity, can absorb and dissipate impact energy, serves as a microscopic pressure head, enhances mechanical interlocking and Van der Waals' force effects, and rapidly establishes sufficient initial adhesive force. And the contradictory problems of constructability and reliability of difficult paper uncovering in summer and poor adhesion in winter of the structural adhesive tape are integrally solved.

This invention discloses a silicone emulsion defoamer for textiles and its preparation method. It is prepared from the following components by weight percentage: 5%-40% polysiloxane silicone paste, 0.3%-20% silicone polyether, 1%-20% emulsifier, 0.1%-5% thickener, 0.05%-0.3% bactericide, and the balance being water, with the sum of the weight percentages of all components being 100%. The stability of the emulsion under high temperature and high pressure environments is improved by using cross-linked polysiloxane silicone paste and silicone polyether with a specific structure. The cross-linked polysiloxane silicone paste provides superior defoaming and foam-suppressing performance. Utilizing the intertwined spatial structure of the high-viscosity silicone composition and the silicone polyether, the defoamer prepared by this method not only exhibits good stability under high temperature and alkaline environments but also significantly improves its late-stage foam-suppressing performance in sizing. More importantly, it enhances the compatibility between the silicone emulsion defoamer and the sizing.

The invention relates to a chemical fiber fabric setting machine with a sizing and setting mechanism and a setting process thereof, and relates to the technical field of chemical fiber fabric processing.The chemical fiber fabric setting machine comprises a machine body, the machine body is of an internal hollow structure, and the problems that when a traditional chemical fiber fabric setting machine works, sizing is uneven, and the setting effect is poor are solved. The problems that an existing sizing device is difficult to accurately control the sizing amount according to the characteristics of different fabrics, so that part of the fabrics are excessively sized, the hand feeling and the air permeability are influenced, and part of the fabrics are not sufficiently sized, the sizing effect is poor, and wrinkles are prone to occurring are solved. The problems that the hand feeling is affected by excessive sizing or the sizing effect is poor due to insufficient sizing caused by the fact that traditional equipment cannot accurately control the sizing amount are solved, meanwhile, the position of the scraper assembly is adjustable through the sliding block assembly and the clamping push rod, the scraper assembly is tightly attached to the surface of the fabric to scrape redundant sizing agent, and it is further guaranteed that the sizing amount is uniform and consistent.

The invention discloses a synthetic polymer waterproof coiled material and a preparation method thereof, and relates to the technical field of waterproof coiled materials, the synthetic polymer waterproof coiled material comprises a synthetic polymer layer, polyester layers are arranged on the upper and lower sides of the synthetic polymer layer, the top of the upper polyester layer is fixedly coated with a waterproof coating, and the bottom of the lower polyester layer is fixedly coated with a primer. Oil film protection paper is fixedly adhered to the bottom of the primer, and the preparation method of the synthetic polymer waterproof roll comprises the following steps: step 1, preparing raw materials; 2, preparing a sizing material; the polyester layers are compounded on the upper side and the lower side of the synthetic polymer layer, so that the tensile property and the stability of the whole coiled material are improved by utilizing the characteristics of the polyester layers, meanwhile, the waterproof coiled material has excellent properties such as moisture resistance, UV resistance and chemical substance resistance, and meanwhile, the waterproof coating is coated on the top of the uppermost polyester layer, so that the waterproof performance of the coiled material is improved. Therefore, the waterproof effect of the coiled material is further optimized, and the waterproof comprehensiveness is improved.

The invention belongs to the technical field of electronic cloth, and particularly relates to slurry for low-dielectric fiber cloth as well as a preparation method and application of the slurry. The slurry for the low-dielectric fiber cloth is prepared from the following components in percentage by mass: 3.0 to 4.0 percent of vinyl alcohol polymer, 1.0 to 2.0 percent of ethylene oxide polymer, 0.1 to 0.3 percent of lubricating agent, 0.1 to 0.3 percent of dispersing agent, 0.1 to 0.3 percent of antistatic agent, 0.1 to 0.2 percent of coupling agent and the balance of pure water. According to the sizing agent for the low-dielectric fiber cloth, a low-polarity auxiliary agent system is adopted, the abrasion resistance of a sizing agent film and the stability of a sizing agent system are improved, fiber hairiness is reduced, the prepared electronic cloth is good in fiber dispersity and high in resin binding force after being subjected to high-temperature desizing, the use requirement of a high-speed PCB is met, and the reliability and CAF resistance of the electronic cloth in a severe environment can be improved; the invention also provides a preparation method thereof.