CN113512321B - Spraying type putty and preparation method and application thereof - Google Patents
Spraying type putty and preparation method and application thereof Download PDFInfo
- Publication number
- CN113512321B CN113512321B CN202110555088.3A CN202110555088A CN113512321B CN 113512321 B CN113512321 B CN 113512321B CN 202110555088 A CN202110555088 A CN 202110555088A CN 113512321 B CN113512321 B CN 113512321B
- Authority
- CN
- China
- Prior art keywords
- parts
- polyester resin
- unsaturated polyester
- weight
- kettle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/676—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/918—Polycarboxylic acids and polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
Abstract
The invention discloses spraying type atomic ash which comprises main ash and a curing agent. The main ash comprises the following components in parts by weight: 35 to 40 parts of high-elasticity unsaturated polyester resin, 15 to 20 parts of air-drying unsaturated polyester resin, 3.0 to 5.0 parts of cobalt iso-octoate, 0.2 to 0.3 part of dimethylaniline, 2.0 to 2.5 parts of wetting dispersant, 2 to 3 parts of titanium dioxide, 8 to 10 parts of organic bentonite, 1.5 to 3.0 parts of fumed silica and 15 to 23 parts of talcum powder. The main ash is changed from thick paste into semi-liquid flowable body, and is matched with liquid curing agent, and after the two are mixed, they are still liquid, and the spray-coating method is adopted to implement construction. Compared with the conventional paste body blade coating, the atomic ash spraying can quickly coat the defect part, is not easy to generate sand holes, obviously improves the construction efficiency and greatly saves the working hours; meanwhile, the spraying mode reduces the operation difficulty and the dependency on the technical level of construction workers, so that the quality of the coating film is ensured.
Description
Technical Field
The invention relates to spraying type putty and a preparation method thereof, belonging to the technical field of embedding materials.
Background
The putty is a novel embedding material which is convenient and quick to use, can be well attached to the surface of a substance and quickly formed, is widely applied to the field of various metal products needing to be filled and repaired, such as train manufacturing, steamship manufacturing, automobile manufacturing and the like, and can effectively fill and modify the defects of pits, shrinkage cavities, cracks, welding seams and the like of a substrate, so that the surface of the substrate before finish painting is smooth and flat.
At present, the construction of the putty adopts a scraping method, which has high requirements on the skills of scraping constructors, and the putty must be mixed with a pasty curing agent before use, so that air bubbles are inevitably mixed in the mixing process, and the mixed air bubbles are sealed in the putty during scraping. After the subsequent polishing process, the sealed air bubbles are exposed, holes called as 'sand holes' are formed on the surface of the coating film, the coating film needs to be scraped again, the polishing is carried out again, and the subsequent paint spraying can not be carried out until the 'sand holes' completely disappear. Generally speaking, to accomplish this work and need repeated blade coating 3 ~ 4 times, need 5 ~ 6 times even under the special condition, waste time and energy, moreover, every way scribbles still need scrape the blade coating position and clear limit after finishing, the unnecessary leftover bits clean up of corner, cause obvious material waste and environmental pollution.
Disclosure of Invention
The invention aims to solve the technical problems that the putty scraping in the prior art depends too much on the technical level of constructors and the scraping efficiency is low, and further provides spraying type putty and a preparation method thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a spray-type atomic ash comprises main ash and a curing agent. The main ash comprises the following components in parts by weight: 35 to 40 parts of high-elasticity unsaturated polyester resin, 15 to 20 parts of air-drying unsaturated polyester resin, 3.0 to 5.0 parts of cobalt iso-octoate, 0.2 to 0.3 part of dimethylaniline, 2.0 to 2.5 parts of wetting dispersant, 2 to 3 parts of titanium dioxide, 8 to 10 parts of organic bentonite, 1.5 to 3.0 parts of fumed silica and 15 to 23 parts of talcum powder.
Preferably, the main ash comprises the following components in parts by weight: 38 parts of high-elasticity unsaturated polyester resin, 17 parts of air-drying unsaturated polyester resin, 4.0 parts of cobalt isooctanoate, 0.25 part of dimethylaniline, 2.0 parts of wetting dispersant, 2.5 parts of titanium pigment, 9 parts of organic bentonite, 2.0 parts of fumed silica and 19 parts of talcum powder.
In the spray-type putty, the putty is sprayed,
the preparation method of the high-elasticity unsaturated polyester resin comprises the following steps: adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin.
The preparation method of the air-drying unsaturated polyester resin comprises the following steps: adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the air-drying unsaturated polyester resin.
The talcum powder consists of 1250-mesh and 800-mesh talcum powder. Wherein, 5 to 8 parts of 1250-mesh talcum powder and 10 to 15 parts of 800-mesh talcum powder; the model of the wetting dispersant is BYK-W966.
The main ash of the spraying type putty is a semi-liquid flowable body, and the curing agent is liquid cyclohexanone peroxide or liquid methyl ethyl ketone peroxide. The mixing weight ratio of the main ash to the curing agent is 100: 2.0-2.5, and preferably 100: 2.0.
The preparation method of the main ash in the spray-type atomic ash comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; if the product is qualified, packaging the product and then warehousing the product; if not, adjusting the raw material proportion according to the performance result until the performance is qualified.
The spraying type atomic ash uses a two-component airless spraying device during spraying, semi-liquid flowable main ash and a liquid curing agent are fed in proportion through respective independent pipelines, are uniformly mixed at the part of a gun head, and are uniformly sprayed on the surface of a workpiece in a fan shape in the form of mist liquid drops.
The gelling time of the spraying type putty is 10-20 min.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the invention provides spraying type putty, which is characterized in that main putty is changed into semi-liquid flowable body from viscous paste body, liquid curing agent is used, the main putty and the semi-liquid flowable body are still liquid after being mixed, and the spraying type putty is constructed by adopting an atomization spraying method. Compared with the conventional paste body blade coating, the spraying type putty can quickly coat the defect part, is not easy to generate sand holes, obviously improves the construction efficiency and greatly saves the working hours; meanwhile, the spraying mode reduces the operation difficulty and the dependency on the technical level of construction workers, so that the quality of the coating film is ensured.
The invention adjusts the molecular structure and viscosity of the polyester resin by matching different types of polyester resins, reasonably adjusts the type and the amount of the filler, and simultaneously adjusts the amount and the type of the anti-settling agent and the thixotropic agent, changes the original high-viscosity and high-viscosity state into a low-viscosity and high-thixotropic semi-fluid state to achieve the effect of atomization, thereby changing the construction mode and changing the blade coating mode into the spraying mode.
The invention particularly limits the preparation methods of the high-elasticity unsaturated polyester resin and the air-drying unsaturated polyester resin, so that the high-elasticity unsaturated polyester resin and the air-drying unsaturated polyester resin have relatively stable polycondensation degree and viscosity, and the main ash of the atomic ash is ensured to have the optimal film coating performance. The high-elasticity unsaturated polyester resin prepared by the method ensures that the finally formed atomic ash film has excellent bending property, excellent adhesive force and excellent high and low temperature alternating resistance; the air-drying unsaturated polyester resin prepared by the method ensures that the atomic ash coating film is quick-drying and easy to grind, and shortens the construction period.
The invention adopts the talcum powder as the filler, thereby ensuring the sanding property of the putty, the smoothness of the coating and the shock resistance, relieving the phenomenon of solidification heat release concentration, reducing the thermal stress generated between the coating and the substrate and enhancing the adhesive force with the substrate. The talcum powder is one of the most common fillers in the production process of the putty, has good compatibility with unsaturated polyester resin and low cost. Usually, only talcum powder with single grain size is adopted in the putty, but the putty is compounded by 800 meshes of talcum powder and 1250 meshes of talcum powder. The oil absorption of the talcum powder is increased along with the increase of the mesh number of the talcum powder, and the adsorption capacity of the unsaturated polyester resin can be increased by adding the talcum powder with 800 meshes and 1250 meshes, namely the content of the unsaturated polyester resin in a coating film is increased. Meanwhile, the addition of 800-mesh talcum powder can obtain better spraying atomization effect, and the compounding of 1250-mesh talcum powder can make up gaps among 800-mesh talcum powder particles, so that a coating film is fine and dense and has no sand holes.
According to the invention, a proper amount of fumed silica is added as an anti-settling agent, so that the phenomenon of resin precipitation and layering in the storage process of the atomic ash is effectively prevented, and the storage time of the atomic ash is prolonged; in addition, the addition of the fumed silica can enable the atomic ash to form a colloid structure from an original unstable system, so that the atomic ash has good thixotropy, the shrinkage of the resin is reduced, and the temperature change resistance of the resin is favorably improved. However, the adsorption amount of the fumed silica to the unsaturated polyester resin is very high, the atomic ash is difficult to disperse due to the excessive addition, and the coating is not easy to polish, so that the addition amount of the fumed silica is the optimal amount and cannot be changed randomly.
The invention adopts a proper amount of titanium dioxide as pigment to improve the covering power of the atomic ash coating film.
The invention adopts dimethylaniline as the putty accelerant to accelerate the gelation time of putty, so that the putty can be quickly dried after being sprayed. The invention also adds wetting dispersant to reduce the viscosity of the system and facilitate atomization spraying.
The invention also provides a preparation method of the spray-coating atomic ash, which defines parameters such as feeding sequence, stirring time and the like in detail in the preparation process. The preparation method is closely related to the product performance, and the quality of the atomic ash product is ensured by limiting the preparation method. The preparation method has the advantages of simple steps, mild conditions, simple process operation and no pollution, and can be further popularized.
The spraying type putty adopts two-component airless spraying equipment during spraying, the semi-liquid flowable main putty and the liquid curing agent are respectively connected with independent feeding pipes and are fed according to a certain proportion, and the semi-liquid flowable main putty and the liquid curing agent are mixed at a gun head part and then are uniformly sprayed on the surface of a workpiece in a fan shape. The spraying method does not need to mix the main ash and the curing agent in advance, and can be used along with the main ash and the curing agent, so that the spraying working time is greatly reduced; meanwhile, the putty is sprayed in an atomized form and repeatedly sprayed for many times, so that small-particle-size liquid drops can be tightly attached to the surface of a workpiece, the adhesive force is strong, and bubbles are not easy to generate; the fan-shaped spraying surface has large spraying area and more uniform spraying.
Detailed Description
The present invention is described in further detail below, but is not limited thereto.
The spraying type putty comprises main putty and a curing agent, wherein the main putty comprises the following components in parts by weight: 35 to 40 parts of high-elasticity unsaturated polyester resin, 15 to 20 parts of air-drying unsaturated polyester resin, 3.0 to 5.0 parts of cobalt iso-octoate, 0.2 to 0.3 part of dimethylaniline, 2.0 to 2.5 parts of wetting dispersant, 2 to 3 parts of titanium dioxide, 8 to 10 parts of organic bentonite, 1.5 to 3.0 parts of fumed silica and 15 to 23 parts of talcum powder; the curing agent is cyclohexanone peroxide or methyl ethyl ketone peroxide.
Wherein the content of the first and second substances,
the preparation method of the high-elasticity unsaturated polyester resin comprises the following steps: adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin.
The preparation method of the air-drying unsaturated polyester resin comprises the following steps: adding 9 parts of propylene glycol, 5 parts of pure water and 28 parts of dicyclopentadiene into a reaction kettle, heating to 88-90 ℃, adding 9 parts of maleic anhydride after the temperature is stabilized, controlling the reaction temperature to be less than 110 ℃, maintaining the kettle temperature for 1 hour between 108-110 ℃, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 ℃, maintaining the kettle temperature for 1 hour between 108-110 ℃, adding 5 parts of diethylene glycol, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting the acid value to be less than 15mg KOH/g, carrying out vacuum reaction, controlling the vacuum degree to be-0.080-0.085 MPa, maintaining the kettle temperature to be 185-190 ℃, carrying out vacuum reaction for 0.5-1.0 hour, detecting the acid value to be less than 10mg KOH/g, cooling to 100 ℃, adding 35 parts of styrene, mixing, thus obtaining the air-drying unsaturated polyester resin.
The model of the wetting dispersant is BYK-W966.
The talcum powder comprises 1250-mesh talcum powder and 800-mesh talcum powder, and specifically comprises 5-8 parts of 1250-mesh talcum powder and 10-15 parts of 800-mesh talcum powder.
Preferably, the main ash comprises the following components in parts by weight: 37 to 39 portions of high-elasticity unsaturated polyester resin, 16 to 18 portions of air-drying unsaturated polyester resin, 3.5 to 4.5 portions of cobalt iso-octoate, 0.22 to 0.27 portion of dimethylaniline, 2.2 to 2.4 portions of wetting dispersant, 2.2 to 2.8 portions of titanium dioxide, 8.5 to 9.5 portions of organic bentonite, 1.8 to 2.7 portions of fumed silica, 6 to 7 portions of 1250-mesh talcum powder and 11 to 13 portions of 800-mesh talcum powder;
most preferably: the main ash comprises the following components in parts by weight: 38 parts of high-elasticity unsaturated polyester resin, 17 parts of air-drying unsaturated polyester resin, 4.0 parts of cobalt isooctanoate, 0.25 part of dimethylaniline, 2.3 parts of wetting dispersant, 2.5 parts of titanium dioxide, 9 parts of organic bentonite, 2.0 parts of fumed silica, 7 parts of 1250-mesh talcum powder and 12 parts of 800-mesh talcum powder.
The curing agent is cyclohexanone peroxide or methyl ethyl ketone peroxide.
The mixing weight ratio of the main ash to the curing agent is 100: 2.0-2.5, and preferably 100:2.
The preparation process of the main ash comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; if the product is qualified, packaging the product and then warehousing the product; if not, adjusting the raw material proportion according to the performance result until the performance is qualified.
The spraying type atomic ash is applied by using a two-component airless spraying device during atomic ash spraying, and the semi-liquid flowable main ash and the liquid curing agent are sprayed into a spraying container through respective independent pipelines according to the weight ratio of 100: feeding materials according to the proportion of 2.0-2.5, uniformly mixing at the gun head part, and uniformly spraying the materials on the surface of a workpiece in a fan shape in the form of mist liquid drops. During spraying, an operator holds the spray gun by hand, repeatedly sprays the paint on the surface of a workpiece, then stands for 10-20 minutes to form a gel film, and then polishes the film into a smooth state by using 320-mesh abrasive paper after 3-4 hours to perform the next paint spraying process.
The characteristic indexes of the spraying type putty are as follows:
the present invention will be described in further detail with reference to examples, but is not limited thereto.
The raw material manufacturers and specifications used in the following examples were:
| name (R) | Manufacturer of the product | Specification of |
| High-elasticity unsaturated polyester resin | Hebei new shield synthetic material Co.,Ltd. | Self-made |
| Air-drying unsaturated polyester resin | Hebei new shield synthetic material Co.,Ltd. | Self-made |
| Cobalt iso-octoate | Sanhai industries Ltd of Xinzheng City | Industrial grade |
| Dimethylaniline | Wuxi Haitai Chemicals Co., Ltd | Industrial grade |
| Wetting dispersant BYK-W966 | Shanghai Kayin chemical Co Ltd | Industrial grade |
| Titanium white powder | Shijiazhuang Lin Titani chemical Co Ltd | Industrial grade |
| Organic bentonite | Tech Co Ltd of Shuangrui New Material in Tianjin | Industrial grade |
| Fumed silica | Beijing Jinhai Co-creation International trade company Limited | Industrial grade |
| 1250 mesh talcum powder | GUANGXI LONGGUANG TALC DEVELOPMENT Co.,Ltd. | Industrial grade |
| 800 mesh talcum powder | GUANGXI LONGGUANG TALC DEVELOPMENT Co.,Ltd. | Industrial grade |
The rest raw materials are all conventional products sold in the market.
Example 1
The spraying type putty comprises main putty and a curing agent, wherein the weight ratio of the main putty to the curing agent is 100:2. The curing agent is cyclohexanone peroxide. The main ash comprises the following components in parts by weight: 38 parts of high-elasticity unsaturated polyester resin, 17 parts of air-drying unsaturated polyester resin, 4.0 parts of cobalt isooctanoate, 0.25 part of dimethylaniline, 2.0 parts of wetting dispersant, 2.5 parts of titanium pigment, 9 parts of organic bentonite, 2.0 parts of fumed silica, 7 parts of 1250-mesh talcum powder and 12 parts of 800-mesh talcum powder.
The preparation process of the spray-type putty comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin in proportion into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; and finally adding the titanium dioxide, the organic bentonite, the fumed silica and the talcum powder into the mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring.
Sampling to detect the viscosity and the construction period of the main ash, detecting to be qualified, and packaging and warehousing products.
Example 2
The spraying type putty comprises main putty and a curing agent, wherein the weight ratio of the main putty to the curing agent is 100:2. The curing agent is cyclohexanone peroxide. The main ash comprises the following components in parts by weight: 35 parts of high-elasticity unsaturated polyester resin, 18 parts of air-drying unsaturated polyester resin, 5 parts of cobalt isooctanoate, 0.22 part of dimethylaniline, 2.5 parts of wetting dispersant, 3 parts of titanium dioxide, 8.5 parts of organic bentonite, 1.8 parts of fumed silica, 5 parts of 1250-mesh talcum powder and 11 parts of 800-mesh talcum powder.
The preparation process of the spray-type putty comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; and (5) packaging the product and warehousing the packaged product after the product is qualified.
Example 3
The spraying type putty comprises main putty and a curing agent, wherein the weight ratio of the main putty to the curing agent is 100: 2.5. The curing agent is methyl ethyl ketone peroxide. The main ash comprises the following components in parts by weight: 40 parts of high-elasticity unsaturated polyester resin, 16 parts of air-drying unsaturated polyester resin, 3.5 parts of cobalt isooctanoate, 0.3 part of dimethylaniline, 2.4 parts of wetting dispersant, 2 parts of titanium dioxide, 8 parts of organic bentonite, 3.0 parts of fumed silica, 7 parts of 1250-mesh talcum powder and 15 parts of 800-mesh talcum powder.
The preparation process of the spray-type putty comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; and (5) packaging the product and warehousing the packaged product after the product is qualified.
Example 4
The spraying type putty comprises main putty and a curing agent, wherein the weight ratio of the main putty to the curing agent is 100:2. The curing agent is methyl ethyl ketone peroxide. The main ash comprises the following components in parts by weight: 37 parts of high-elasticity unsaturated polyester resin, 20 parts of air-drying unsaturated polyester resin, 4.5 parts of cobalt isooctanoate, 0.2 part of dimethylaniline, 2.2 parts of wetting dispersant, 2.8 parts of titanium pigment, 10 parts of organic bentonite, 2.7 parts of fumed silica, 8 parts of 1250-mesh talcum powder and 13 parts of 800-mesh talcum powder.
The preparation process of the spray-type putty comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; and (5) packaging the product and warehousing the packaged product after the product is qualified.
Example 5
The spraying type atomic ash comprises main ash and a curing agent, wherein the matching weight ratio of the main ash to the curing agent is 100: 2.4. The curing agent is cyclohexanone peroxide; the main ash comprises the following components in parts by weight: 39 parts of high-elasticity unsaturated polyester resin, 15 parts of air-drying unsaturated polyester resin, 3.0 parts of cobalt isooctanoate, 0.27 part of dimethylaniline, 2.0 parts of wetting dispersant, 2.2 parts of titanium pigment, 9.5 parts of organic bentonite, 1.5 parts of fumed silica, 6 parts of 1250-mesh talcum powder and 10 parts of 800-mesh talcum powder.
The preparation process of the spray-type putty comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; and (4) passing.
Comparative example 1
This comparative example uses the knife-coated putty patent product previously applied by the company Hebei Xindun synthetic materials Co., Ltd, patent application No. 201610714813.6, patent name: the method for preparing the special putty for the motor train unit train and the preparation method and the application thereof adopt the method disclosed in the embodiment 1.
Comparative example 2
The comparative example was prepared by the method disclosed in example 1 in invention patent application No. 2019, 11/6, entitled "preparation method of polyester resin for sprayable putty, and preparation method thereof" (application No. 201911073682.8) of qingyuan Yongchang paint Co., Ltd.
Examples of Performance measurement and evaluation
Performance test of putty product
1. And (3) taking the putty products prepared in the examples 1-5 and the comparative examples 1 and 2 for performance test.
The inspection is based on the enterprise standard of China railway general company (Q/CR 546.1-2016), and the inspection qualification standard is shown in Table 1.
The results of the performance tests on the putty product are shown in Table 2.
TABLE 2 performance test results of putty products
As can be seen from the data in Table 1, the performance indexes of the putty products in the embodiments 1 to 5 can completely reach the performance standards specified in the enterprise standard (Q/CR 546.1-2016) of the general Chinese railway company, and can meet the requirements of spraying construction, thereby achieving the purpose of the invention.
Compared with the comparative example 1, the putty film prepared in the embodiment 1-5 achieves the same level in the aspects of color, appearance, polishing property, X-cutting test, impact resistance, water resistance, pull-open adhesion and the like, but the putty film has better bending property and can be better attached to the curved surface of a train, and meanwhile, sprayed putty fog drops can be tightly attached to the surface of a workpiece, so that the putty film is good in uniformity, the putty film is not easy to mix with bubbles, the film body is smoother, the success of one-time spraying is high, and the polishing difficulty is reduced.
Compared with the spray-coating type putty product of the comparative example 2, the indexes of bending performance, pull-open adhesion, impact resistance and the like of the products of the examples 1-5 are obviously higher than those of the product of the comparative example 2, and the fact that the product of the invention is remarkably superior to the product of the comparative example 2 in terms of the bonding property and strength is proved.
The sprayable time in comparative example 2, i.e. the gel time in table 1, refers to the time from the start of contact until the solid state is formed in the two-component product. The comparative example 2 adopts a mode that two components are firstly mixed and then are arranged in a spray gun for spraying, so that the construction performance can be ensured only by long gelling time; the invention adopts a mode that two-component synchronous feeding enters the spray gun, is mixed in the gun head and then is sprayed out, the shorter gelation time can enable the atomic ash to generate cross-linking reaction on the surface of the workpiece more quickly, the drying speed is faster, and the spraying time is shorter.
Spray application performance of (II) atomic ash
The atomic ash of the examples 1-5, the comparative examples 1 and the comparative examples 2 is adopted to coat the high-speed railway carriage and the locomotive door with the same area, wherein the coating area of the high-speed railway carriage is about 70m2～80m2The coating area of the locomotive door is about 2m2～3m2. In the experiment, the atomic ash products of the examples 1 to 5 and the comparative example 2 adopt a spraying mode, specifically, the products of the examples 1 to 5 are directly fed into a spray gun to form two components, the two components are directly sprayed after being mixed at the spray gun head, and the product of the comparative example 2 is firstly mixed uniformly in a container and then injected into the spray gun for use. Comparative example 1 a draw down procedure was used, which was the same as that described in comparative example 1.
The operation time and the amount of ash used in the coating operation are shown in tables 3 to 4. The coating time is the total time for finishing the surface coating of the high-speed rail carriage/locomotive door, and comprises the time consumed by multiple batching; the ash amount for coating is the total ash amount, including the total of materials for multiple coatings. Since the products of examples 1-5 were direct feed spray, multiple dosing was not required.
TABLE 3 coating condition of high-speed railway carriage
| Coating time | Ash content for coating | |
| Example 1 | 1h50min | 102kg |
| Example 2 | 1h55min | 108kg |
| Example 3 | 1h50min | 103kg |
| Example 4 | 1h53min | 106kg |
| Example 5 | 1h51min | 104kg |
| Comparative example 1 | 18h | 206kg |
| Comparative example 2 | 6h | 180Kg |
TABLE 4 coating conditions of locomotive doors
| Coating time | Ash content for coating | |
| Example 1 | 2min | 1.5Kg |
| Example 2 | 3min | 1.7Kg |
| Example 3 | 2min | 1.6Kg |
| Example 4 | 3min | 1.7Kg |
| Example 5 | 2min | 1.6Kg |
| Comparative example 1 | 1～2h | 3Kg |
| Comparative example 2 | 30min | 2.6Kg |
From the data, the spraying type putty has obvious technical progress compared with the scraping type putty of the comparative example 1, and the coating time is greatly reduced and the coating speed is obviously improved because the repeated mixing of ingredients is not needed; meanwhile, the spraying method is not easy to cause waste, and the ash consumption of coating is reduced by 43.33-50%; the putty sprayed by the spray gun is sprayed in the form of atomized droplets, can be better attached to the surface of a workpiece, and a coating film is not easy to crack.
Compared with the spraying type putty of the comparative example 2, the main putty and the curing agent of the spraying type putty are mixed at the gun head part, namely, the main putty and the curing agent are mixed in the construction process, the mixing time is not occupied, the using amount is controllable, and waste is not easy to cause, while the comparative example 2 needs to mix the main putty and the curing agent in advance, the mixing time is needed, and the main putty and the curing agent are required to be completely used up before gelation after being mixed, otherwise, gelation and curing are caused, in addition, the stirring rod, the residue on the wall of the mixing container and the residue of the spray pot of the spray gun can be cured during mixing, so that much waste is caused, and the cleaning work is very complicated. Although the painting time of the spray type putty of comparative example 2 has been significantly shortened and the amount of used putty has been reduced, the difference between the painting time and the amount of used putty for painting is very large as compared with the products of examples 1 to 5 of the present invention, the painting time of the product of the present invention is only about 1/10 of comparative example 2, and the reduction rate of used putty is not less than 34.6%.
Tests prove that 100Kg of the spray-type putty can be sprayed on an area of about 70-80 square meters and the spraying thickness is about 1 millimeter.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be introduced thereby while remaining within the scope of the invention as claimed.
Claims (6)
1. The spraying type atomic ash comprises main ash and a curing agent, and is characterized in that the main ash comprises the following components in parts by weight: 35 to 40 parts of high-elasticity unsaturated polyester resin, 15 to 20 parts of air-drying unsaturated polyester resin, 3.0 to 5.0 parts of cobalt iso-octoate, 0.2 to 0.3 part of dimethylaniline, 2.0 to 2.5 parts of wetting dispersant, 2 to 3 parts of titanium dioxide, 8 to 10 parts of organic bentonite, 1.5 to 3.0 parts of fumed silica and 15 to 23 parts of talcum powder;
the preparation process of the main ash comprises the following steps:
s1 preparation of high-elasticity unsaturated polyester resin
Adding 23 parts by weight of diethylene glycol, 5 parts by weight of ethylene glycol, 5 parts by weight of linoleic acid, 8 parts by weight of tetrahydrophthalic anhydride and 12 parts by weight of sebacic acid into a reaction kettle, heating to 188-190 ℃, carrying out heat preservation reaction for 3-4 hours, detecting that the acid value is 50-60 mgKOH/g, and cooling to below 180 ℃; then adding 10 parts of maleic anhydride, heating to 188-190 ℃ within 1.5-2 hours, continuing heat preservation reaction, detecting the acid value to be 50-55 mgKOH/g, then carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080-0.085 Mpa, keeping the kettle temperature at 188-190 ℃, keeping the vacuum pumping time at 1.0-1.5 hours, detecting the acid value to be 35-40 mgKOH/g, cooling to 120 ℃, dropwise adding 2 parts of hexamethylene diisocyanate within 20-30 minutes, keeping the kettle temperature at 118-120 ℃ for 1 hour after dropwise adding, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain the high-elasticity unsaturated polyester resin;
s2 preparation of air-drying unsaturated polyester resin
Adding 9 parts by weight of propylene glycol, 5 parts by weight of pure water and 28 parts by weight of dicyclopentadiene into a reaction kettle, heating to 88-90 deg.C, adding 9 parts of maleic anhydride when the temperature is stable, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 9 parts of maleic anhydride again, controlling the reaction temperature to be less than 110 deg.C, maintaining the temperature of the kettle at 108-110 deg.C for 1 hr, adding 5 parts of diethylene glycol, heating, heating to 185-190 ℃ within 1 hour, carrying out heat preservation reaction, sampling every hour, detecting that the acid value is less than 15mgKOH/g, carrying out vacuum pumping reaction, controlling the vacuum degree to be-0.080 to-0.085 Mpa, keeping the kettle temperature at 185-190 ℃, keeping the vacuum pumping time at 0.5-1.0 hour, detecting the acid value to be less than 10mgKOH/g, then cooling to 100 ℃, adding 35 parts of styrene, and mixing to obtain air-drying unsaturated polyester resin;
s3 preparation of Main Ash
Adding high-elasticity unsaturated polyester resin and air-drying unsaturated polyester resin into a mixing kettle at normal temperature, starting stirring at the rotating speed of 300-500 revolutions per minute, then adding cobalt iso-octoate, stirring for 5-10 minutes, then adding dimethylaniline, stirring for 5-10 minutes, then adding a wetting dispersant, and stirring for 5-10 minutes; finally, adding titanium dioxide, organic bentonite, fumed silica and talcum powder into a mixing kettle, continuously stirring for 30-40 minutes until the mixture becomes a uniform semi-liquid flowable body, and stopping stirring;
sampling and detecting the viscosity and the construction period of the main ash; if the product is qualified, packaging the product and then warehousing the product; if not, adjusting the proportion of the raw materials according to the performance result until the performance is qualified;
the two-component airless spraying equipment is used for spraying the atomic ash, semi-liquid flowable main ash and a liquid curing agent are fed in proportion through respective independent pipelines, are uniformly mixed at the part of a gun head, and are uniformly sprayed on the surface of a workpiece in a fan shape in the form of mist liquid drops.
2. The sprayable putty as set forth in claim 1 further comprising: the main ash comprises the following components in parts by weight: 38 parts of high-elasticity unsaturated polyester resin, 17 parts of air-drying unsaturated polyester resin, 4.0 parts of cobalt isooctanoate, 0.25 part of dimethylaniline, 2.0 parts of wetting dispersant, 2.5 parts of titanium pigment, 9 parts of organic bentonite, 2.0 parts of fumed silica and 19 parts of talcum powder.
3. The sprayable putty as set forth in any one of claims 1 or 2, further comprising: the talcum powder consists of 1250-mesh talcum powder and 800-mesh talcum powder, wherein 5-8 parts of the 1250-mesh talcum powder and 10-15 parts of the 800-mesh talcum powder; the model of the wetting dispersant is BYK-W966.
4. The sprayable putty as set forth in any one of claims 1 or 2, further comprising: the main ash is a semi-liquid flowable body, and the curing agent is liquid cyclohexanone peroxide or liquid methyl ethyl ketone peroxide.
5. The sprayable putty as set forth in claim 4 wherein: the matching weight ratio of the main ash to the curing agent is 100: 2.0-2.5.
6. The sprayable putty as set forth in claim 1 further comprising: the gelling time of the spraying type putty is 10-20 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110555088.3A CN113512321B (en) | 2021-05-21 | 2021-05-21 | Spraying type putty and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110555088.3A CN113512321B (en) | 2021-05-21 | 2021-05-21 | Spraying type putty and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113512321A CN113512321A (en) | 2021-10-19 |
| CN113512321B true CN113512321B (en) | 2022-03-22 |
Family
ID=78064675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110555088.3A Active CN113512321B (en) | 2021-05-21 | 2021-05-21 | Spraying type putty and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113512321B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106617B (en) * | 2021-12-03 | 2022-05-10 | 清远市浩宇化工科技有限公司 | Putty for vehicles and preparation method and application thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704940B (en) * | 2009-11-13 | 2011-11-30 | 常州工程职业技术学院 | Unsaturated polyester resin for atomic ash |
| CN104311810A (en) * | 2014-09-17 | 2015-01-28 | 英德市雅家涂料有限公司 | Cheap dicyclopentadiene modified unsaturated polyester resin and preparation method thereof |
| CN107641365B (en) * | 2016-08-24 | 2019-10-25 | 河北新盾合成材料有限公司 | A kind of motor train unit train atomic ash special and its preparation method and application |
| CN106750220A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of polyester resin with excellent air-drying property and preparation method thereof |
| CN109880071A (en) * | 2019-01-23 | 2019-06-14 | 新阳科技集团有限公司 | A kind of preparation method of dicyclopentadiene type unsaturated polyester resin |
-
2021
- 2021-05-21 CN CN202110555088.3A patent/CN113512321B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113512321A (en) | 2021-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101775245B (en) | Multifunctional putty | |
| CN113512321B (en) | Spraying type putty and preparation method and application thereof | |
| KR20050067189A (en) | Powder coating, method for production thereof, method for using said powder coating and coated article | |
| CN109181433A (en) | It is a kind of can linging colored paint and preparation method thereof in wet on wet, the dry one pack system squirted | |
| CN104119737A (en) | Automobile wear-resistant paint and preparation method thereof | |
| CN109266177A (en) | A kind of water-base epoxy thick-slurry type anticorrosive paint and preparation method thereof | |
| CN102093797A (en) | Water-in-water multicolor building coating for exterior and interior walls and preparation method and coating method thereof | |
| CN102277026A (en) | Lacquer putty for block board and preparation method thereof | |
| CN105017954B (en) | Automobile coating bottom is made up the difference agent and automobile finish restorative procedure | |
| CN109971315B (en) | Automobile paint surface repairing paint and repairing process thereof | |
| CN105860744B (en) | A kind of one-component quick setting epoxy ash priming paint of high salt spray resistance and preparation method thereof | |
| CN106221544A (en) | A kind of aqueous, environmental protective film and preparation method thereof | |
| WO2023056756A1 (en) | Water-based one-component intermediate coating for helmets using electrostatic spraying | |
| KR101895590B1 (en) | Coating Machine for Mark of Road | |
| CN107377335A (en) | The coating process of water paint | |
| CN110564271B (en) | Solvent high-gloss base coat for skin | |
| CN103160154A (en) | Gelcoat putty for repairing wind power cabin cover and preparation method thereof | |
| CN105289956A (en) | Automotive body repairing spraying process | |
| CN112299877A (en) | Method for repairing umbrella skirt of electroceramic product | |
| JP2005041939A (en) | Unsaturated polyester resin coating and method for coating with the same | |
| CN113563750A (en) | Bi-component water-based anticorrosive paint and preparation method and application thereof | |
| CN109485364B (en) | Functional 3D printing material based on high-flow gypsum powder and preparation method thereof | |
| CN106433278A (en) | Double-component solvent-free polyurethane large-crack putty and preparation method thereof | |
| JP3420198B2 (en) | Repair paint and repair painting method | |
| CN105598011A (en) | Method for rapidly repairing defect on outer surface of automobile through weathered stone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |