143 results about "Unsaturated polyester" patented technology

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 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 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.

The present invention provides a thermosetting resin composition for electromagnetic wave shielding, a bulk molding compound, and a molded product thereof, which are excellent in fluidity, injection molding property, compression molding property, and in which a molded product excellent in electromagnetic wave shielding property can be obtained. The thermosetting resin composition for electromagnetic wave shielding is characterized by containing a thermosetting resin (A) containing an unsaturated polyester resin (a1) and a vinyl ester resin (a2), a low shrinkage agent (B), a thickening agent (C) containing acrylic resin particles (c1) and magnesium oxide (c2), a thermally conductive filler (D), and a reinforcing material (E).

This invention discloses a BMC material for preparing food contact products and its preparation method. The material comprises the following components by mass percentage: 12%–20% food contact grade styrene-based unsaturated polyester resin (compliant with GB 4806.7-2016); 3%–10% solvent-free PMMA powder; 0.5%–1% zinc stearate; 0.2%–0.6% curing agent TBIC; 0.01%–0.1% polymerization inhibitor TBHQ; 0.01%–0.05% stabilizer BHT; 20%–45% calcium carbonate; 10%–40% aluminum hydroxide; and 5%–10% glass fiber. This invention, by using low-cost food contact grade styrene-based resin combined with solvent-free PMMA powder and optimizing the ratio of TBIC to TBHQ, achieves near-zero styrene monomer residue in the product while reducing costs. This effectively solves the problems of high cost, difficulty in processability adjustment, and monomer residue risk associated with traditional food contact grade BMC materials. The cost of the resulting material can be controlled below 7 yuan / kg, and it has both flame-retardant and high-strength properties, making it a widely viable alternative to traditional food contact grade plastics.

The invention belongs to the technical field of powder coatings, and particularly relates to an ultraviolet curing coal series kaolin powder coating and a preparation method thereof. In order to make full use of titanium resources and achieve excellent coating performance, coal gangue calcined kaolin and titanium dioxide in a mass ratio of 1: 1 are used and are directly mixed under the action of mechanical shearing force; and then mixing with unsaturated polyester resin, a photoinitiator, a flatting agent, a degassing agent and a defoaming agent to prepare the ultraviolet curing powder coating which has the advantages of high hardness, good impact resistance and excellent chemical resistance.

The application belongs to the technical field of coatings, and particularly relates to a putty based on ultraviolet light curing resin and a preparation method and application thereof. The putty based on ultraviolet light curing resin comprises, by mass fraction, 30-50 parts of ultraviolet light curing resin, 25-45 parts of fillers, 3-6 parts of diluents, 3-6 parts of poly(methyl methacrylate-co-methyl methacrylate), and 0.05-1.5 parts of a photoinitiator. The ultraviolet light curing resin comprises a light curing unsaturated polyester resin and a polyester acrylate. The fillers comprise antioxidants / halloysite nanotubes / basalt fibers, nano calcium carbonate, and nano zirconium oxide. The putty based on ultraviolet light curing resin has good adhesion, flexibility, impact resistance, heat resistance, and high and low temperature resistance, and can be applied in the fields of automobile repair and furniture manufacturing.

The application discloses a glass fiber sizing agent for molded grating, which comprises effective components and water, and the solid content of the sizing agent is 6-9%, and the percentage of the solid mass of the effective components in the total solid mass of the sizing agent is as follows: 5.0-12.0% of silane coupling agent A; 2.0-7.0% of silane coupling agent B; 20.0-45.0% of film forming agent A; 20.0-44.0% of film forming agent B; 10.0-17.0% of film forming agent C; 3.0-8.0% of lubricant; and 1.0-6.0% of pH value regulator; wherein the film forming agent A is a vinyl acetate-vinyl copolymer emulsion, the film forming agent B is a bisphenol F epoxy resin emulsion, and the film forming agent C is a modified polyester resin emulsion. The glass fiber coated by the sizing agent has good yarn smoothness, easy dispersion, good fusing property and flexibility, is not easy to be abraded, has good compatibility with unsaturated polyester resin, has fast penetration speed, has good use smoothness, and meets the process requirements of molded glass steel grating production, and the molded glass steel grating prepared from the sizing agent has excellent shearing resistance.

The invention discloses bio-based unsaturated polyester resin for a high-thermal-conductivity powder coating, a preparation method of the bio-based unsaturated polyester resin, a powder coating composition and a high-thermal-conductivity coating. The bio-based unsaturated polyester resin for the high-thermal-conductivity powder coating is characterized by comprising the following components: A) unsaturated binary acid / anhydride; b) saturated binary acid / anhydride; c) a diol comprising from 30 to 70 mol% of isosorbide, from 20 to 50 mol% of bio-based 1, 3-propanediol and / or 1, 4-butanediol, and from 0 to 20 mol% of an auxiliary diol selected from one or more of ethylene glycol, neopentyl glycol, hydrogenated bisphenol A; d) an esterification catalyst; and a polymerization inhibitor. According to the bio-based unsaturated polyester resin for the high-thermal-conductivity powder coating, through unconventional bio-based monomers and a special molecular structure design, on the premise of ensuring proper Tg and processability, consideration of high bio-based content and high thermal conductivity is realized.

The invention provides terminated branched unsaturated polyester suitable for light-cured glass fiber reinforced plastic as well as a preparation method and application of the terminated branched unsaturated polyester. The method comprises the following steps: mixing saturated dicarboxylic acid, unsaturated dicarboxylic acid, saturated tricarboxylic acid, saturated dihydric alcohol and an antioxidant, and carrying out condensation reaction to obtain unterminated branched unsaturated polyester; and mixing the obtained unterminated branched unsaturated polyester with an aminated silane coupling agent and a condensing agent, and carrying out an amidation reaction to obtain the terminated branched unsaturated polyester. The end-capped branched unsaturated polyester prepared by the invention has the characteristics of low viscosity and high transparency; the resin system contains silicon hydroxyl, so that the resin system is endowed with thixotropic property while the interaction with the glass fiber is facilitated; by changing the variety and dosage of the synthetic raw materials, the molecular weight, the branched structure and the number of silicon hydroxyl contained in a molecular chain can be adjusted, so that the prepared unsaturated polyester has wide application prospects in the fields of mold pressing, lamination, hand lay-up and injection molding of light-cured glass fiber reinforced plastics.

This invention belongs to the field of coating technology and relates to a high-temperature resistant CHPO curable putty and its preparation method, which comprises the following components: unsaturated polyester resin, styrene, cobalt isooctanoate, dimethylaniline, high-temperature resistant composite dispersant, hydrogenated castor oil, silica, rutile titanium dioxide, talc, and curing agent.

The invention discloses a pumpable resin anchoring agent for mounting a mine tunnel anchor rod and a pumping device of the pumpable resin anchoring agent, and relates to the field of mine anchor rod mounting devices. Comprising the following components in parts by weight: 100-120 parts of unsaturated polyester resin, 1-3 parts of an accelerant, 1-10 parts of a thixotropic agent, 300-400 parts of superfine modified filler, 2-5 parts of a silane coupling agent, 3-6 parts of a low-shrinkage additive, 1-3 parts of a wetting dispersant and 1-2 parts of a styrene inhibitor; the catalyst component is prepared from the following components in parts by weight: 10 to 15 parts of benzoyl peroxide, 10 to 15 parts of dibutyl phthalate, 5 to 10 parts of a composite initiator, 0.5 to 1.5 parts of a thickening agent, 0.1 to 0.3 part of zinc stearate and 100 to 120 parts of deionized water; during construction, a resin component and a catalyst component are mixed according to the mass ratio of 100: (10-20), and are conveyed and injected into a drill hole through a pumping device; by matching with the pumping device with the rotary groove cutting, multi-channel grouting and pressure monitoring functions, active leaking stoppage, accurate isolation and efficient anchoring of irregular drill holes of a mine tunnel are achieved, and the sealing performance, stability and construction efficiency of anchor rod installation are greatly improved.

This invention relates to the field of polymer composite materials technology, and discloses a material and manufacturing process for resistance to damage and staining. The manufacturing process includes: weighing unsaturated polyester resin, aluminum hydroxide and / or magnesium hydroxide, quartz powder and / or calcium carbonate, organically modified montmorillonite, ammonium polyphosphate crystal form II, and anhydrous calcium borate according to the formula, mixing them to form a homogeneous slurry, then casting it into a gel mold, and finally curing and demolding it to obtain the product. This invention uses high aspect ratio organically modified montmorillonite sheets to fill the micropores on the surface of the product, and uses anhydrous calcium borate to replace zinc borate containing crystal water to eliminate pores during the curing stage. The two work synergistically to reduce surface porosity and achieve long-lasting stain resistance; using extremely low water solubility ammonium polyphosphate crystal form II to replace water-soluble phosphates ensures long-term stable flame retardant performance and batch consistency; the absence of anhydrous calcium borate eliminates interference with curing accelerators, resulting in stable molding quality; and each flame-retardant component takes effect sequentially in the low-temperature, medium-temperature, and high-temperature ranges, forming continuous flame-retardant protection across the entire temperature range.

The high-toughness quartz stone is prepared from the following raw materials: inorganic powder, quartz sand, modified rubber powder, modified metakaolin, unsaturated polyester resin, a curing agent coupling agent and a gel material, the modified rubber powder is obtained by taking recycled rubber powder as a raw material, adding styrene resin, hydroxyl silicone oil and 3-aminopropyltriethoxysilane, mixing and modifying; according to the quartz stone, the inorganic powder and the quartz sand are taken as main raw materials, and the modified rubber powder and the modified metakaolin are introduced to be matched with other raw materials, so that the performance of the prepared quartz stone can be effectively improved, the toughness of the quartz stone is improved, and the quartz stone is prevented from cracking and deforming in subsequent use.

This application relates to the field of artificial stone technology, specifically to an artificial marble and its preparation method. The artificial marble of this application comprises the following components in parts by weight: 100 parts marble powder, 8-12 parts aliphatic polyisocyanate, 20-30 parts polypropylene glycol, 0.2-0.3 parts dibutyltin dilaurate, 10-15 parts cellulose ether modified magnesium lithium silicate, 5-7.5 parts polyvinyl acetate, and 2-3 parts flame retardant. This application uses aliphatic polyisocyanate to replace unsaturated polyester resin, reducing unsaturated double bonds in the system. Combined with cellulose ether modified magnesium lithium silicate and polyvinyl acetate, it improves the mechanical properties of the marble, thereby obtaining an artificial marble with excellent weather resistance, stain resistance, mechanical strength, and flame retardancy.

Polymer concrete as a material consisting of fillers, a binder, and a hardener, wherein the weight fraction of the fillers is between 75% and 95%, the weight fraction of the vegetable oil or natural resin is between 3% and 18%, and the weight fraction of the hardener is between 2% and 15%, wherein the fillers comprise quartz flour with a weight fraction of 10% to 20%, sand with a grain size of 0 mm to 2 mm and a weight fraction of 20% to 30%, gravel with a grain size of 2 mm to 8 mm and a weight fraction of 30% to 40%, and gravel with a grain size of 8 mm to 16 mm and a weight fraction of 20% to 40%, characterized in that the binder consists of chemically modified vegetable oil or chemically modified natural resin, wherein the binder is triglycerides from vegetable oil or terpenes from natural resin, preferably from rosin. are modified to acrylates or polyols or epoxy resins or polyesters, wherein modified polyols are hardened by the addition of isocyanates or polyisocyanates, and / or wherein polyesters are hardened by the addition of polyols and / or wherein native acrylates or native unsaturated polyesters are polymerized by radicals.

This invention relates to a coated panel and a method for manufacturing a coated panel. Specifically, the invention relates to a coated panel having at least a substrate (2) and a top layer (3) applied thereon, wherein the top layer (3) comprises at least a decorative layer (4) and a translucent or transparent abrasion-resistant layer (5), characterized in that the abrasion-resistant layer (5) comprises a thermosetting acrylate resin or a thermosetting unsaturated polyester resin. Preferably, the resin is thermosetting partially or completely cured. In particular, the acrylate resin or unsaturated polyester resin is at least partially cured by a heat-initiated free radical crosslinking reaction. The invention also relates to a method for producing such a coated panel (1), particularly a method for producing a floor panel.

The application discloses an unsaturated polyester resin for an open molding process and a preparation method thereof, and relates to the technical field of high polymer materials.The resin comprises an unsaturated polyester base resin, a composite crosslinking monomer, a film forming inhibitor and a core-shell structure toughening agent; the base resin is formed by polycondensation of an unsaturated dibasic anhydride, a saturated dibasic acid and a dibasic alcohol according to a molar ratio of 0.5-0.7:0.3-0.5:1.05-1.15; the composite crosslinking monomer comprises styrene and a high-boiling-point crosslinking monomer, and the mass ratio of the two is 20-40:60-80; and the film forming inhibitor is a long-chain alkyl modified polysiloxane.The application solves the problem that low volatility and high toughness are difficult to be considered simultaneously by synergistically reducing volatilization of the high-boiling-point monomer and the surface barrier and synergistically toughening by flexible molecular chain design and the core-shell particle, and significantly improves the working environment and improves the durability of products.

The invention discloses unsaturated polyester resin for resin diamond and a preparation method thereof, and belongs to the technical field of polyester resin. The high-temperature-resistant maleic anhydride resin is prepared from the following components: maleic anhydride, DCPD, DEG, EG, an antioxidant, a polymerization inhibitor, paraffin, styrene, a composite accelerant and water. The composite accelerant is composed of cobalt isooctanoate, copper isooctanoate and potassium isooctanoate according to the weight ratio of 1: 2-4: 6; the preparation method comprises the following steps: 1) adding maleic anhydride, DEG, an antioxidant and water, heating, adding DCPD, and keeping the temperature; 2) adding EG, MA, DEG, an antioxidant and a polymerization inhibitor, and heating for reaction; and 3) cooling, adding a polymerization inhibitor and paraffin, cooling, adding styrene and a composite accelerator to obtain the unsaturated polyester resin for the resin diamond, and the composite accelerator is obtained by premixing cobalt iso-octoate, copper iso-octoate and potassium iso-octoate according to a weight ratio of 1: 2-4: 6 at 25-60 DEG C. The unsaturated polyester resin for the resin diamond has the characteristics of excellent mechanical property, good air-drying property, high solid content and low linear shrinkage.

The invention relates to the technical field of aquaculture facilities, in particular to a pultrusion profile structure for an aquaculture greenhouse and a preparation method. The structure comprises arch bars, a plurality of stand columns and cross beams, the stand columns are arranged at intervals, the top ends of the stand columns are detachably connected with the arch bars, and the two ends of each cross beam are detachably connected with the arch bars; the arch bars, the stand columns and the cross beams are all made of glass fiber reinforced unsaturated polyester resin pultrusion profiles. The structure has the advantages of being high in strength, resistant to corrosion, convenient to install, good in heat insulation performance and the like, and the problems existing in an existing aquaculture greenhouse structure can be effectively solved. According to the method, a pulling and aligning process is adopted for preparation, the steps are simple, the efficiency is high, the cost is low, the obtained pultruded profile is high in strength, and the obtained aquaculture greenhouse has good performance and is beneficial to aquaculture.

The application provides a compound additive for quartz stone plate roll extrusion forming and a forming process, the compound additive comprises internal lubricating components and external lubricating anti-sticking components in a mass ratio of 2.5-4:1, the internal lubricating components are stearate lubricating materials, and the external lubricating anti-sticking components are oxyalkylene wax lubricating materials. The forming process comprises the following steps, S1. raw material preparation: according to a conventional formula of the quartz stone plate, quartz aggregate, quartz powder, unsaturated polyester resin, coupling agent, curing agent and colorant are weighed, and the compound additive is weighed at the same time, the addition amount of the compound additive is 0.6-2.2% of the total mass of the formula; S2. stirring and mixing; S3. roll extrusion forming; and S4. curing post-treatment. The compound additive for quartz stone plate roll extrusion forming and the forming process can solve the contradiction between the flowability of the mixed material and the roll sticking in the industry for a long time, and can help the plate product to form differentiated competitiveness in the high-end decoration market through the improvement of the texture definition.

An unsaturated polyester resin for diamond resin and its preparation method are disclosed, belonging to the technical field of polyester resins. It is composed of the following components: maleic anhydride, DCPD, DEG, EG, antioxidant, polymerization inhibitor, paraffin wax, styrene, composite accelerator, and water; the composite accelerator is composed of cobalt isooctanoate, copper isooctanoate, and potassium isooctanoate in a weight ratio of 1:2 to 4:6. The preparation steps are: 1) Add maleic anhydride, DEG, antioxidant, and water; heat and add DCPD, maintaining the temperature; 2) Add EG, MA, DEG, antioxidant, and polymerization inhibitor; heat and react; 3) Cool and add polymerization inhibitor and paraffin wax; cool and add styrene and the composite accelerator to obtain the unsaturated polyester resin for diamond resin; the composite accelerator is obtained by premixing cobalt isooctanoate, copper isooctanoate, and potassium isooctanoate in a weight ratio of 1:2 to 4:6 at 25 to 60°C. This invention features excellent mechanical properties, good air-drying properties, high solids content, and low linear shrinkage.

The application discloses high-temperature-resistant and flame-retardant unsaturated polyester plastic and a preparation method thereof, and belongs to the technical field of polyester resins. The high-temperature-resistant and flame-retardant unsaturated polyester plastic comprises the following raw materials in parts by weight: 100 parts of base resin, 15-20 parts of furan functionalized flame-retardant polysiloxane, and 0.5-0.7 parts of maleimide functionalized filler. The preparation method comprises the following steps: weighing the raw materials according to the parts by weight, mixing the base resin, the furan functionalized flame-retardant polysiloxane, the maleimide functionalized filler and an initiator, uniformly mixing, heating and curing to obtain the high-temperature-resistant and flame-retardant unsaturated polyester plastic. The furan functionalized flame-retardant polysiloxane and the maleimide functionalized filler are added in the high-temperature-resistant and flame-retardant unsaturated polyester plastic. By introducing the furan functionalized flame-retardant polysiloxane, a phosphorus-silicon-furan multi-element synergistic flame-retardant system is successfully constructed in a polymer network.

This invention provides a castable ablation-resistant coating material and its preparation method. The material is composed of unsaturated polyester resin, cobalt naphthenate, cyclohexanone peroxide, trichloroethyl phosphate, boron phenolic resin, silicon carbide, and hexa(4-aldehyde phenoxy)cyclotriphosphazene. Through optimized compounding design of the coating material, this invention achieves a castable ablation-resistant coating material with an ablation rate as low as 0.11 mm / s and a viscosity as low as 5900 mPa·s. This material possesses both excellent ablation resistance and casting process performance, and has broad application prospects in the casting and coating of solid rocket motor propellants.

The invention discloses a microcapsule fire extinguishing agent and a preparation method thereof. The microcapsule fire extinguishing agent is of a core-shell structure, and a shell layer comprises a first shell and a second shell from inside to outside; the first shell comprises colloid, a first barrier material, a second barrier material and perfluorohexyl ethyl sulfonic acid, a fluorocarbon fire extinguishing agent is wrapped in the first shell, the first barrier material and the second barrier material are both sheet-shaped, the surface of the first barrier material is grafted with a cationic dispersant through a coupling agent, and the particle size of the first barrier material is larger than that of the second barrier material; the second shell comprises unsaturated polyester, and the volume shrinkage rate of the unsaturated polyester is larger than or equal to 7% when the unsaturated polyester is cured. The microcapsule fire extinguishing agent provided by the invention has the effects of high coating rate and long lasting time.

A composition contains an organosilyl-functional polyester, where the organosilyl-functional polyester is characterized by having multiple terminal carbon-carbon double bonds bound to the polyester through a carbon-oxygen-silicon linkage.

The utility model discloses an integrated prefabricated pump station with a remote water stop overhaul function. The integrated prefabricated pump station comprises a pump station system, a pipe valve system and a control system. The main structure of the integrated prefabricated pump station water inlet pipe is made of high-strength alkali-free glass fiber twistless roving thermosetting unsaturated polyester resin materials, the knife gate valve is arranged on the integrated prefabricated pump station water inlet pipe with the remote water stopping and overhauling function, the knife gate valve is controlled through the manual and electric dual-purpose hoist, and in the daily use, maintenance and overhauling process, the maintenance cost is greatly reduced. Opening and closing of the knife gate valve are remotely or manually controlled, so that the situation that sewage still flows into the barrel through the water inlet pipe when the integrated prefabricated pump station is overhauled can be avoided, the fault rate of the integrated prefabricated pump station can be reduced, and daily maintenance and overhaul of the pump station are facilitated.

The invention relates to the field of composite material mold pressing, in particular to a lightweight sheet and a preparation method thereof. According to the invention, an unconventional curing system azodicarbonamide and an azodiisobutyronitrile initiator are used for initiating polymerization, gas is locked through resin curing and crosslinking to form pores so as to achieve the purpose of light weight, and the gas is harmless nitrogen which accords with the idea of environmental protection; according to the invention, a traditional peroxide curing agent is abandoned, azodicarbonamide and azodiisobutyronitrile are directly utilized to produce active free radicals while being thermally decomposed to release gas, and styrene and unsaturated polyester resin are initiated to be subjected to cross-linking curing, so that gas release and curing are synchronously carried out; and the balance between gas release and resin cross-linking curing can be controlled only through the temperature.

The application relates to an unsaturated polyester resin for optical cable reinforcing cores and a preparation method thereof, and belongs to the technical field of unsaturated resins. The unsaturated polyester resin is prepared from the following components: PG, IPA, a catalyst, maleic anhydride, AA, styrene, an antioxidant, a first, a second and a third polymerization inhibitor; the alcohol acid ratio is 1.08-1.12:1; the activity is 3.4-3.8:1; the molar ratio of AA and IPA is 1:12-16; and the preparation steps are as follows: 1) uniformly mixing propylene glycol, a catalyst and isophthalic acid; 2) heating, keeping warm, and then heating again; cooling and then adding the first polymerization inhibitor, maleic anhydride and adipic acid in sequence, heating, keeping warm, and then heating again; 3) cooling and then adding the second polymerization inhibitor; and 4) cooling and then adding styrene, the third polymerization inhibitor and the antioxidant, uniformly mixing, and cooling to <=60 DEG C to obtain the unsaturated polyester resin for optical cable reinforcing cores. The unsaturated polyester resin for optical cable reinforcing cores has the characteristics of high bending strength and high temperature resistance.

The invention relates to the technical field of glass fiber covered wire paint, in particular to UV photocuring glass fiber covered wire paint and a preparation method thereof. The UV photocuring glass fiber covered wire paint is prepared from the following raw materials in parts by weight: 40 to 50 parts of castor oil modified unsaturated polyester resin, 5 to 10 parts of styrenated phenol resin, 30 to 50 parts of UV active diluting monomer, 5 to 10 parts of photoinitiator, 0.8 to 2 parts of thermal initiator, 0.2 to 0.5 part of flatting agent and 0.2 to 0.5 part of defoaming agent. According to the invention, a dual-curing mechanism of ultraviolet irradiation and heating is adopted, the method is specially used for manufacturing the glass fiber wrapped winding wire, the modern environmental protection requirement is met, and the method has the environmental protection advantages of low volatile matter and low odor, and is suitable for producing various glass fiber wrapped winding wires with the temperature index of 155 level.