418 results about "Unsaturated polyester" patented technology

The invention discloses unsaturated polyester resin for imitation jade handicrafts and a preparation method thereof, and belongs to the technical field of polyester resin. Comprising the following components: diethylene glycol, methylpropanediol, propylene glycol, maleic anhydride, phthalic anhydride, an antioxidant, a polymerization inhibitor, paraffin, a stabilizer, an ultraviolet light absorber, a whitening agent and a diluent. The weight ratio of the propylene glycol to the methyl propylene glycol is (1.0-1.3): 1, and the methyl propylene glycol accounts for 20-22% of the total amount of the dihydric alcohol; the weight ratio of maleic anhydride to phthalic anhydride is (0.46-0.52): 1; the preparation method comprises 1) adding the raw materials and the antioxidant into a reactor, carrying out heating, carrying out heat preservation for 0.5-1.0 h and continuing heating, 2) carrying out a reaction for 2-3 h after heating, carrying out dehydration until an acid value is 20-25 mgKOH / g, and 3) carrying out cooling, adding the auxiliary agent and carrying out uniform mixing so that the unsaturated polyester resin is obtained.

The invention discloses a high-strength low-density proppant as well as a preparation method and an in-situ generation method thereof. The proppant is prepared by compounding recycled glass fiber reinforced plastic powder or glass fiber powder with different meshes and recycled glass fiber reinforced plastic powder in different proportions and blending a styrene system / unsaturated polyester resin system in different proportions. The glass fiber reinforced plastic powder as the filler can improve the mechanical properties of the proppant, such as strength and toughness. The matrix is made of polystyrene or unsaturated polyester or other high polymer materials and is low in density. Therefore, the proppant has the characteristics of high strength and low density. The invention discloses a preparation method of a high-strength and low-density proppant, which can produce the high-strength and low-density proppant with uniform particle size distribution on a large scale by adopting a suspension polymerization method, and can efficiently recover a large amount of glass fiber reinforced plastic wastes. The suspension polymerization method is simple to operate, the produced proppant is high in roundness and sphericity, the mining cost of a coal-bed gas well can be reduced, and the yield of coal-bed gas can be increased.

The invention discloses unsaturated polyester resin for an unmanned aerial vehicle fuselage and a preparation method of the unsaturated polyester resin, and relates to the field of high polymer materials. When the unsaturated polyester resin for the unmanned aerial vehicle fuselage is prepared, a flame-retardant monomer reacts with 2-hydroxy-5-(hydroxymethyl) benzaldehyde to prepare a modified flame-retardant monomer; reacting cellulose with acrylic acid to obtain pre-modified cellulose; the pre-modified cellulose, 1-allyl-1, 1, 3, 3-tetramethyldisiloxane and chloroplatinic acid are subjected to a reaction, and modified cellulose is prepared; maleic anhydride, 5-(1H-imidazole-1-yl)-1, 3-phthalic acid, propylene glycol and the modified flame-retardant monomer are subjected to a reaction, and pre-polyester is prepared; and stirring the pre-polyester, zinc chloride, modified cellulose, benzophenone peroxide and styrene to obtain the anti-aging coating. The prepared unsaturated polyester resin for the unmanned aerial vehicle fuselage has good anti-aging, self-repairing, flame-retardant and self-cleaning performance.

The invention discloses unsaturated polyester resin for an optical cable reinforcing core and a preparation method thereof, and belongs to the technical field of unsaturated polyester resin. The composition is composed of the following components: PG, IPA, a catalyst, maleic anhydride, AA, styrene, an antioxidant, a first polymerization inhibitor, a second polymerization inhibitor and a third polymerization inhibitor. The ratio of alcohol to acid is (1.08-1.12): 1; the activity is (3.4-3.8): 1; the molar ratio of AA to IPA is 1: (12-16); the preparation method comprises the following steps: 1) uniformly mixing propylene glycol, a catalyst and isophthalic acid; 2) raising the temperature, preserving the heat and raising the temperature again; cooling, sequentially adding a first polymerization inhibitor, maleic anhydride and adipic acid, heating, keeping the temperature, and heating again; 3) cooling and adding a second polymerization inhibitor, and 4) cooling and adding styrene, a third polymerization inhibitor and an antioxidant, uniformly mixing, and cooling to less than or equal to 60 DEG C to obtain the unsaturated polyester resin for the optical cable reinforcing core. The unsaturated polyester resin for the optical cable reinforcing core has the characteristics of high bending strength and high temperature resistance.

The invention discloses weather-resistant unsaturated polyester resin as well as a preparation method and photovoltaic application thereof, and relates to the technical field of high polymer materials. When the weather-resistant unsaturated polyester resin is prepared, 1, 6-hexanediol, itaconic acid and an ultraviolet absorption monomer are subjected to esterification and polycondensation to prepare unsaturated polyester; the preparation method comprises the following steps: carrying out reaction on naringenin and 4-isocyanate-tetramethylpiperidine oxide to prepare a functional cross-linking agent; the preparation method comprises the following steps: reacting 3-(4-chlorphenyl) phosphine, 2, 2 '-thiobis (4-chlorophenol) and 2-butene-1, 4-diamine, and polymerizing and coating silicon dioxide to prepare pre-modified silicon dioxide; reacting the pre-modified silicon dioxide, n-butylamine and nickel acetate to obtain modified silicon dioxide; uniformly mixing unsaturated polyester, a functional cross-linking agent and modified silicon dioxide, and performing injection molding to obtain the weather-resistant unsaturated polyester resin. The weather-resistant unsaturated polyester resin prepared by the invention has excellent anti-aging, flame-retardant, self-repairing and mechanical properties.

A sheet molding compound (SMC) composition formulation including a curable resin, such as unsaturated polyester of vinyl ester, in an ethylenically unsaturated monomer; a low profile additive, in a curable solvent; and an intumescent additive, such as melamine polyphosphate or ethylene diamine phosphate. An article formed of the SMC composition formulation experiences no more than a 100% increase in thickness as compared to an initial thickness of the article after exposure to a flame. The low profile additive is present in the composition and the intumescent additive is present in the composition. The resulting article has a char strength at 3 mm thickness of between 100 and 1,000 Newtons.

The invention discloses lighting resin as well as a preparation method and application thereof, and belongs to the technical field of lighting type unsaturated polyester resin. Comprising the following components: ethylene glycol, benzoic acid, phthalic anhydride, maleic anhydride, an antioxidant, a defoaming agent, a surfactant, a stabilizer, styrene, a solvent, a first polymerization inhibitor, a second polymerization inhibitor and a third polymerization inhibitor. The alcohol-acid ratio is (1.03-1.13): 1; the molar ratio of unsaturated acid to saturated acid is (2.5-3.5): 1; the mass ratio of benzoic acid to the surfactant is (26.8-44): 1; the preparation method comprises the following steps: 1) reacting ethylene glycol, maleic anhydride, phthalic anhydride, benzoic acid, an antioxidant and a first polymerization inhibitor; the preparation method comprises the following steps of (1) adding a first polymerization inhibitor, (2) heating and preserving heat after the reaction is completed, and (3) cooling, adding a second polymerization inhibitor, cooling, adding a third polymerization inhibitor, a cross-linking agent, a surfactant and a defoaming agent, and adding a solvent to obtain the daylighting resin.According to the preparation method, the surfactant and benzoic acid have a synergistic effect, so that the compatibility of polyester and the cross-linking agent is improved.

The invention discloses a synthesis method of special bio-based unsaturated polyester resin for zero-crystalline silicon quartz stone, which comprises the following steps: firstly, putting bio-based dihydric alcohol, 2, 5-furandicarboxylic acid, itaconic acid, an antioxidant and a polymerization inhibitor into a reaction kettle, heating to 205-210 DEG C, carrying out polymerization reaction for 2-4 hours, then vacuumizing for 2-3 hours, and cooling to room temperature to obtain the special bio-based unsaturated polyester resin for zero-crystalline silicon quartz stone. When the reaction acid value is tested to be smaller than 25 mgKOH / g and the cone plate viscosity at 125 DEG C is 500-900 mpa.s, the reaction endpoint is reached, finally, a bio-based crosslinking monomer is added for dilution, and the bio-based unsaturated polyester resin special for the zero-crystallization silicon quartz stone is obtained. The bio-based unsaturated polyester resin special for the zero-crystalline silicon quartz stone synthesized by the method can meet the requirements of a zero-crystalline silicon quartz stone production process, and solves the problems that a zero-crystalline silicon quartz stone plate is easy to generate surface pulverization corrosion, glass explosion and the like.

The invention discloses a high-strength antibacterial polypropylene composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 100 parts of polypropylene, 15-25 parts of glass fiber, 1-8 parts of a compatilizer, 3-6 parts of unsaturated polyester, 1-5 parts of a stabilizer, 0.1-0.5 part of an initiator, 0.1-0.3 part of a metal ion antibacterial agent and 0.2-1.5 parts of an antioxidant, the stabilizer is selected from at least one of methyl methacrylate, acrylonitrile and divinyl benzene; the melting processing temperature of the polypropylene material is 160-175 DEG C. According to the invention, a micro-crosslinking structure is formed in the glass fiber reinforced polypropylene, so that the anisotropic shrinkage difference of the glass fiber reinforced polypropylene is effectively reduced, and the appearance quality defects caused by anisotropic characteristics of anisotropic shrinkage of the current glass fiber reinforced polypropylene material are reduced.

The invention discloses a preparation process of bi-component flame-retardant low-viscosity unsaturated polyester resin, and belongs to the technical field of polymer materials, a flame retardant is fixed by grafting a flame-retardant component trichloroethyl phosphate on the surface of a prepared core-shell ceramic heat-conducting nanosphere, and the flame-retardant core-shell ceramic heat-conducting nanosphere is obtained; the flame-retardant core-shell ceramic heat-conducting nanospheres are subjected to acrylic acid modification and are used as a cross-linking component, so that the flame-retardant core-shell ceramic heat-conducting nanospheres are cross-linked in a polymerization network of polyester resin, the mechanical property of the polyester resin is improved, and migration of flame-retardant components in the long-term use process is avoided; the shell structure of the core-shell ceramic heat-conducting nanosphere is titanium-based MOF, the subsequent flame-retardant component trichloroethyl phosphate is grafted on the shell, and the titanium-based MOF has excellent capability of catalyzing carbon formation, can quickly and stably cooperate with the trichloroethyl phosphate to play a flame-retardant role, and can effectively avoid reduction of the synergistic effect caused by steric hindrance.

The invention discloses unsaturated polyester resin for repairing an ultraviolet curing pipeline, and belongs to the technical field of preparation of unsaturated polyester resin. The unsaturated polyester resin for repairing the ultraviolet curing pipeline is prepared from the following components in parts by weight: 20 to 30 parts of maleic anhydride, 15 to 25 parts of phthalic anhydride, 19.8 to 34.1 parts of ethylene glycol, 24.3 to 41.8 parts of propylene glycol, 4 to 10 parts of a composite ultraviolet curing agent, 1 to 3 parts of a modified temperature-sensitive agent, 2 to 5 parts of carbon nanotubes, 0.1 to 0.5 part of hydroquinone and 0.5 to 1.2 parts of an antioxidant 1010. The unsaturated polyester resin prepared by the method has excellent temperature-responsive phase change, mechanical property, catalytic photocuring property and chemical corrosion resistance.

The invention discloses natural fiber geotextile and a preparation method thereof, and relates to the field of environment-friendly materials.The preparation method comprises the following steps that natural fiber fabric is placed in chemical treatment liquid to be subjected to dipping-compression roller treatment to obtain treated fabric, and the treated fabric is subjected to irradiation treatment; the chemical treatment liquid is prepared by mixing asphalt emulsion, bisphenol A epoxy resin, unsaturated polyester resin, a curing agent and an initiator. The asphalt emulsion, bisphenol A epoxy resin and unsaturated polyester resin are used for filling pores of the natural fiber fabric, cross-linking is carried out to form a three-dimensional cross-linked network, and irradiation treatment is carried out. Under the comprehensive action, the mechanical strength of the natural fiber geotextile is improved, the moisture absorption rate is reduced, and the antibacterial rate is improved.

The invention relates to the field of resin barrel stacking. The invention discloses a resin barrel stacking machine for unsaturated polyester resin production and a using method, and aims to solve the problems that when an existing resin barrel is transported and stacked, the outer wall of the resin barrel is sunken when the outer wall of the resin barrel is externally clamped, the outer wall of the resin barrel is deformed, and the resin barrel is damaged. After the resin barrels are used for many times, the resin barrels are scrapped due to deformation of the resin barrels, so that the resin barrels cannot be subsequently stacked and transported. The side supports surround the outer wall of the resin barrel, the resin barrel is wrapped with the conveying belt, the outer wall of the resin barrel can be protected, and the situation that the outer wall of the resin barrel is damaged in the carrying and clamping process, and consequently a barrel body deforms is avoided; furthermore, when the friction plate encircles the outer wall of the resin barrel, clamping force is relatively provided for the outer wall of the resin barrel, and the force can be concentrated in a required local area.

This invention relates to a polyurethane microcapsule emulsion, its preparation method, and its application. The raw materials for preparing the polyurethane microcapsule emulsion, by weight, include: 30-50 parts of unsaturated polyester polyol, 10-25 parts of isocyanate monomer, 3-6 parts of hydrophilic monomer, 2-5 parts of small molecule alcohol chain extender, 1.5-5 parts of neutralizing agent, 0.1-0.5 parts of organometallic catalyst, 20-50 parts of organic solvent, 5-15 parts of pesticide active ingredient, 3-10 parts of C6-C15 straight-chain or branched-chain olefin monomer, 0.1-0.5 parts of initiator, and 100-160 parts of water. The polyurethane microcapsule emulsion provided by this invention solves the problems of low crosslinking density, simple structural topology, insufficient hydrophobicity, and poor encapsulation stability of existing pesticide microcapsules, improving the controlled-release performance, capsule wall density, and emulsion system stability of the polyurethane microcapsule emulsion.

The invention discloses a novel microcapsule flame retardant and a preparation method thereof, and relates to the technical field of flame retardants. According to the novel microcapsule flame retardant, a novel biological matrix material is prepared from carboxymethyl chitosan. Then taking NF-grade cholesterol and a novel biological matrix material NF-carboxymethyl chitosan derivative as a shell material, and taking phosphoric acid metal salt as a capsule core; the novel biological matrix material carboxymethyl chitosan derivative shell material is low in cost, green and non-toxic, and is emulsified and cross-linked with NF-grade cholesterol, so that the flame retardant can be better coated, the surface of the flame retardant can be modified, and the microcapsule flame retardant has excellent and lasting flame retardant property. The flame retardant can be used for flame retardant modification of unsaturated polyester resin, the vertical combustion grade of the obtained flame retardant unsaturated polyester resin reaches V1, the limit oxygen index is 33%, and the flame retardant unsaturated polyester resin has good flame retardance, is suitable for high flame retardant requirements, has the smoke density grade of 58, and is low in smoke density and environmentally friendly.

The invention relates to the technical field of glass fiber reinforced composite materials, and discloses a glass fiber reinforced plastic wiredrawing plate and a processing method thereof.The glass fiber reinforced plastic wiredrawing plate comprises an outer gel coat layer and an inner fiber reinforced matrix layer, benzotriazole type nano silicon dioxide is prepared and added into the outer gel coat layer of the glass fiber reinforced plastic wiredrawing plate, and the glass fiber reinforced plastic wiredrawing plate is obtained. The gel coat layer takes unsaturated polyester resin as a base material, on one hand, nano silicon dioxide has good compatibility with the unsaturated polyester resin after being modified, the wear resistance of the unsaturated polyester resin can be improved, and on the other hand, the unsaturated polyester resin easily initiates degradation of molecular chains under the action of ultraviolet light, so that the wear resistance of the gel coat layer is improved. By introducing the benzotriazole type ultraviolet absorber, the influence of ultraviolet light on the unsaturated polyester resin can be remarkably reduced, and the weather resistance of the unsaturated polyester resin is improved, so that the glass fiber reinforced plastic wire-drawing plate can maintain stable performance and complete structure in an outdoor environment.

The invention belongs to the technical field of railway bridge ancillary facilities, and discloses a high-strength light composite material railway bridge foot plank which comprises a plane part at the top and hollow strip-shaped protrusions arranged in the length direction, and strip-shaped grooves opened downwards are formed between the protrusions so as to improve the bearing capacity and reduce the dead weight. The foot plank is formed by combining a resin matrix, an alkali-free glass fiber reinforced material, a flame retardant and an auxiliary agent, an unsaturated polyester resin system or an epoxy resin system is selected, and the connecting piece is of an S-shaped component or a hook type structure, so that rapid installation and reliable locking of the foot plank and the steel beam are achieved. The foot plank has the advantages of high strength, light weight, corrosion resistance, high weather resistance and the like, and is suitable for long-term safe use of railroad bridges.

The invention provides an organic hypophosphite flame retardant as shown in a formula (I). Compared with the prior art, the flame retardant provided by the invention contains aryl, is high in stability, relatively high in phosphorus content and relatively high in flame retardance, can be used for flame retardance of various high polymer materials such as polyurethane, epoxy resin and unsaturated polyester, and can endow the polyurethane material with good flame-retardant stability and good mechanical properties especially when being applied to polyurethane.

The invention belongs to the technical field of unsaturated polyester resin materials, and particularly relates to an unsaturated polyester resin material containing a potassium bromide composite accelerant and a preparation method of the unsaturated polyester resin material. The unsaturated polyester resin material containing the potassium bromide composite accelerant comprises the following raw materials: unsaturated polyester resin, the composite accelerant and an initiator, the unsaturated polyester resin is prepared from the following raw materials: dihydric alcohol, saturated dibasic acid, unsaturated dibasic acid, a polymerization inhibitor, an antioxidant and styrene. According to the unsaturated polyester resin material containing the potassium bromide composite accelerator, the composite accelerator is adopted to catalyze isomerization crosslinking of the unsaturated polyester resin, so that the curing speed of the unsaturated polyester resin is increased, the production efficiency is ensured, and the production cost is reduced; the bending strength and the bending modulus of the product prepared by adopting the composite accelerant are improved, and the impact resistance of the product is enhanced; the invention further provides a preparation method, and the preparation process is simple.

The invention discloses an anti-skid resin type artificial stone material which comprises the following raw materials in parts by weight: 10 parts of composite resin, 55-70 parts of modified stone aggregate, 10-25 parts of needle-like wollastonite, 0.4-0.8 part of a curing agent, 0.05-0.2 part of a catalyst and 0.05-0.2 part of a light stabilizer, the composite resin comprises unsaturated polyester resin and an anti-skid filler in a mass ratio of 9: 1-7: 3, and the anti-skid resin type artificial stone material is prepared from the following raw materials in parts by weight: 10 parts of modified stone aggregate, 10-25 parts of needle-like wollastonite, 0.4-0.8 part of a curing agent, 0.05-0.2 part of a catalyst and 0.05-0.2 part of a light stabilizer. The anti-skid filler is one of ethylene glycol acrylate, glyceryl acrylate and acrylic acid modified sorbitol, the modified stone aggregate is formed by modifying stone aggregate through a stone aggregate modifier, and the catalyst is one of cobalt naphthenate, cobalt iso-octoate and manganese iso-octoate. The invention further discloses a preparation method of the anti-skid resin type artificial stone material, optimization balance of the anti-skid performance and other key performance of the artificial stone material is achieved, the application value of the artificial stone material in building decoration can be improved, and the safety and attractiveness of building space can be remarkably improved.

The invention discloses a flame-retardant SMC (Sheet Molding Compound) material for a new energy storage box and a preparation method of the flame-retardant SMC material, and relates to the field of composite material preparation. The flame-retardant SMC material for the new energy storage box is prepared from the following components in parts by weight: 20-24 parts of epoxy vinyl ester resin, 14-20 parts of unsaturated polyester resin, 5-10 parts of benzoxazine resin, 12-18 parts of a phosphorus-nitrogen synergist, 5-8 parts of an inorganic flame retardant, 5-8 parts of a reinforcing agent and 1-3 parts of other auxiliaries. The phosphorus-nitrogen synergist comprises vinyl modified DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and amino modified DOPO, the inorganic flame retardant is prepared from expanded graphite and aluminum hydroxide, and the reinforcing agent is prepared from alkali-free glass fibers and nano magnesium hydroxide. The SMC material prepared by the invention is suitable for being safely used in various environments, and has high flame retardance and excellent mechanical properties.

The present invention discloses a preparation method of a bio-based cyclic ester monomer and its corresponding bio-based polyester, comprising the following steps: esterifying a bio-based unsaturated fatty acid with a diol to obtain a corresponding unsaturated diester; preparing the bio-based unsaturated cyclic ester monomer and the saturated cyclic ester monomer from the bio-based unsaturated diester by combining the ring-closing depolymerization method and the catalytic hydrogenation method based on olefin metathesis. Specifically: preparing a bio-based unsaturated polyester precursor through a polymerization reaction based on olefin metathesis, and then preparing the bio-based unsaturated cyclic ester monomer by the ring-closing depolymerization method; subjecting the bio-based unsaturated polyester precursor to catalytic hydrogenation to prepare a bio-based saturated polyester precursor, and then preparing the bio-based saturated cyclic ester monomer by the ring-closing depolymerization method; the bio-based unsaturated cyclic ester monomer can be obtained as the bio-based saturated cyclic ester monomer through catalytic hydrogenation. The bio-based unsaturated cyclic ester monomer and the bio-based saturated cyclic ester monomer synthesized by the present invention can be polymerized to synthesize a bio-based polyester with good regularity, which is an environmentally friendly polymer material.

The invention provides a high-toughness bundling grating and a production process of the high-toughness bundling grating. The composite material is prepared from the following raw materials in parts by weight: 32 to 42 parts of epoxy modified unsaturated polyester resin, 26 to 36 parts of alkali-free glass fiber, 7 to 11 parts of metallocene polyolefin, 5 to 9 parts of high-branching-degree polyolefin, 4 to 8 parts of ethylene propylene diene monomer, 2.5 to 5.5 parts of core-shell structure elastomer toughening agent, 1.5 to 4.5 parts of modified nano aluminum nitride-graphene composite filler, 0.7 to 1.1 parts of silane coupling agent and 0.5 to 0.9 part of antioxidant. 0.4 to 0.7 part of ultraviolet stabilizer, 0.4 to 0.8 part of calcium stearate and 0.1 to 0.3 part of conductive additive. According to the invention, the core-shell structure elastomer toughening agent realizes toughening without damaging strength through core-shell synergy, and the impact strength is improved by 40% or above; the modified nano aluminum nitride-graphene composite filler constructs a heat conduction-antistatic network, and the modified nano aluminum nitride-graphene composite filler and the metallocene polyolefin are matched with the high-branching-degree polyolefin and the ethylene propylene diene monomer to enhance low-temperature toughness and creep resistance.

The invention provides bio-based hyperbranched unsaturated polyester, a UV curing coating and application of the bio-based hyperbranched unsaturated polyester and the UV curing coating. The bio-based hyperbranched unsaturated polyester is obtained through polycondensation of preparation raw materials including bio-based hydroxyl-terminated hyperbranched polyester, unsaturated binary acid and / or anhydride thereof and maleic acid modified polyolefin. The preparation raw materials of the UV curing coating comprise the following components in parts by weight: 20-60 parts of bio-based hyperbranched unsaturated polyester, 20-80 parts of an active diluent monomer and 2-7 parts of a photoinitiator. The hyperbranched unsaturated polyester disclosed by the invention is high in reaction activity, low in viscosity and low in shrinkage rate; the UV coating prepared from the resin is low in viscosity and can be coated in a roller coating mode, a cured coating is compact, MEK wiping resistance reaches more than 1000 times, glossiness attenuation is lower than 10% after UVB illumination is adopted for 1600 h, haze is lower than 1%, hardness and abrasion resistance are excellent, adhesive force to multiple base materials is good, and the UV coating is very suitable for being applied to optical films.

The invention relates to the technical field of cutting tools, and particularly discloses a cutting disc and a manufacturing method thereof, and the cutting disc comprises the following raw materials: liquid resin, a curing agent, reinforced fibers, an abrasive material and a filler. The reinforced fiber is one or a combination of more of glass fiber, carbon fiber and the like; the grinding material is one or a combination of more of white corundum, diamond and the like; the filler is one or a combination of more of molybdenum disulfide, copper powder and the like; the liquid resin can be a combination of epoxy resin E-44 and the like or a combination of unsaturated polyester and the like; the curing agent is selected from combination of dicyandiamide and the like or MEKP and the like according to the type of the liquid resin. The manufacturing method comprises the following steps: uniformly mixing the raw materials, carrying out hot press molding, carrying out secondary hardening, and finally thinning the hardened product to the thickness of 0.1-0.35 mm. The cutting blade is high in strength, good in wear resistance, controllable in thickness and capable of meeting the cutting requirements of different industries.

The invention discloses a glass fiber reinforced plastic as well as a preparation method and application thereof, belongs to the field of building energy-saving composite materials, and aims to solve the problems that the interface of the existing glass fiber reinforced plastic for glass fiber reinforced plastic doors and windows is easy to hydrolyze, and the mechanical property conflicts with the thermal insulation property. Raw materials of the material comprise epoxy modified unsaturated polyester resin, S-glass fiber cloth, a silane-titanate composite treating agent, core-shell structure glass beads and the like, and the material is prepared through fiber composite modification, bead preparation and composite molding. The interface stability is improved through bifunctional group modification, heat conduction is reduced through core-shell and particle size grading microspheres, mechanical support is guaranteed through S-glass fibers, the tensile strength is larger than or equal to 85 MPa, the heat conductivity coefficient is smaller than or equal to 0.09 W / (mK), glass fiber reinforced plastic door and window manufacturing is adapted, existing equipment is reused, and the high-efficiency and energy-saving industry direction is met.

The utility model relates to the technical field of material testing, and discloses an unsaturated polyester resin viscosity testing device which comprises a fixing block and a support, a stirring assembly is arranged on the right side of the support, a connecting column is fixedly connected to the bottom of the fixing block, and a telescopic assembly is arranged in the connecting column; the stirring assembly comprises a motor fixedly connected to the right side of the support, and the driving end of the motor is rotationally connected with a second gear. According to the unsaturated polyester resin viscosity testing device, when the viscosity of resin needs to be detected, a second gear is driven to rotate through the driving end of a motor, the second gear drives two first gears through rotation, and the first gears drive a shell and a fixing plate in the rotation process to stir the viscosity of the resin; the viscosity of resin on the inner side of the water tank can be cleaned through the mounting blocks on the front side and the rear side of the shell and the brush during stirring, various components in the resin can be fully mixed through stirring, local concentration difference is avoided, and the viscosity detection is more accurate.

This application discloses a glass fiber sizing for pigmented SMC, comprising active ingredients and water. The sizing has a solid content of 3.8% to 13.8%. The percentage of the solid mass of each active ingredient relative to the total solid mass of the sizing is expressed as follows: coupling agent 9.0% to 20%, film-forming agent 36% to 72%, antistatic agent 3.0% to 9.0%, leveling agent 4.0% to 11%, and feel agent 12% to 27%. The feel agent is a polymer polymerized from a silicone oil containing a long-chain alkyl group and modified by end capping. The film-forming agent is a mixture of a first film-forming agent and a second film-forming agent in a mass ratio of 1:1 to 1:5, wherein the first film-forming agent is a silicone-modified epoxy emulsion, and the second film-forming agent is a fast-permeating unsaturated polyester emulsion. The glass fiber yarn produced by coating with the sizing has a smooth surface and good molding fluidity, ensuring uniform fiber dispersion in the finished product and preventing surface glass fiber grain. The sizing also exhibits good compatibility with polyester resin and strong interfacial bonding, significantly improving the mechanical properties of the finished product.

The invention discloses a manufacturing method of an artificial light-transmitting stone embossment, which is realized by the following steps of: mixing bio-based polyurethane resin with aliphatic isocyanate, adding fillers such as polyacrylate, organic silicon, nano silicon dioxide, glass beads and the like, then dispersing, carrying out vacuum defoaming to obtain slurry, and drying to obtain the artificial light-transmitting stone embossment. A layered pouring process is combined with an air pressure impressing technology for forming, the period is shortened through UV-thermal dual curing, and the embossment is manufactured. The bottleneck of a traditional process is broken through, epoxy resin is replaced with bio-based resin, the environment-friendly requirement is met, a diffuse reflection system is formed by nano-silica and glass beads, the light transmittance is larger than or equal to 70%, the surface is glossy, soft and free of glare, the aliphatic isocyanate endows the anti-yellowing characteristic, and compared with a traditional unsaturated polyester and epoxy resin method, the anti-yellowing performance is good. The light transmittance, the weather resistance, the mechanical property and the environmental protection property are remarkably improved, and the light-transmitting and weather-resistant composite material is suitable for high-end building decoration, art relief and other scenes and has the industrial mass production and personalized customization capacity.

The invention discloses a sheet molding compound for a torrent swimming pool wall. The sheet molding compound is prepared from the following raw materials: isophthalic resin, hyperbranched unsaturated polyester, a low-shrinkage additive, a curing agent, a release agent, a polymerization inhibitor, a thickening agent, a diluent, fibers and filler, the isophthalic resin is prepared from isophthalic acid, fumaric acid, neopentyl glycol and 1, 2-propylene glycol through a two-step process under the action of a catalyst and an initiator; the hyperbranched unsaturated polyester is obtained by sequentially grafting pentaerythritol serving as a central monomer with bis (hydroxymethyl) propionic acid serving as a branched monomer and lauric acid for low viscosity and carrying out end-capping modification with acrylic acid. The mechanical property and the water resistance of the isophthalic resin are optimized through the compounding and preparation steps of the isophthalic resin raw materials; the hyperbranched unsaturated polyester and the isophthalic resin have good compatibility in compounding, the viscosity of the raw materials is adjusted, and the mechanical property and the heat resistance of the product are further optimized after crosslinking.