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CN-122011881-A - High-viscosity polymer coating and preparation and use methods thereof

CN122011881ACN 122011881 ACN122011881 ACN 122011881ACN-122011881-A

Abstract

A high-viscosity high-molecular paint is prepared from high-molecular resin (60-80 wt.%), water-resistant filler (15-25), water-proof assistant (3-8), diluent (5-10) and solidifying agent (2-6) through high-solid resin (more than or equal to 85 wt.%) and preparing process including modifying filler, mixing raw materials, solidifying, and sequentially cleaning base layer, napping, special priming paint, spreading reinforcing material of matrix and coating surface. The invention improves film forming compactness through formula optimization, combines the pretreatment of the base layer and the matched construction process to enhance the adhesive force between the coating and the base layer, effectively avoids the phenomena of peeling and peeling/hollowing, has excellent waterproof performance and long service life, and is suitable for waterproof engineering in the fields of construction, building materials and the like.

Inventors

  • XU GANGFENG
  • ZHUANG XUELIAN
  • WANG YONG
  • SHI NING
  • XU DONGJING

Assignees

  • 新沂市宝丽蓝建材有限公司
  • 江苏宝丽蓝新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (9)

  1. 1. The high-viscosity polymer coating is characterized by comprising, by weight, 60-80 parts of polymer resin, 15-25 parts of water-resistant filler, 3-8 parts of waterproof auxiliary agent, 5-10 parts of diluent and 2-6 parts of curing agent, wherein the polymer resin is high-solid resin.
  2. 2. The high-viscosity polymer coating according to claim 1, wherein the polymer resin is at least one of epoxy resin and polyurethane resin with a solid content of 90% -98%, and the diluent is at least one of acetone and ethyl acetate.
  3. 3. The high-viscosity polymer coating according to claim 1, wherein the water-resistant filler is at least one of talcum powder, heavy calcium carbonate and fumed silica with the particle size of 10-50 μm, and the water-resistant additive is at least one of organosilicon water-proofing agent and fluorocarbon water-proofing agent.
  4. 4. The high-viscosity polymer coating according to claim 1, wherein the curing agent is at least one of an amine curing agent and an isocyanate curing agent, the molar ratio of the curing agent to the polymer resin is controlled to be 1:1.05-1.1, and the mass ratio of the curing agent to the water-resistant filler is 8% -40%.
  5. 5. The method for preparing a high-viscosity polymer coating according to any one of claims 1 to 4, comprising the steps of: (1) Carrying out surface modification treatment on the waterproof filler and drying; (2) Mixing and stirring 60-80 parts of high polymer resin, 15-25 parts of waterproof filler and 3-8 parts of waterproof auxiliary agent according to parts by weight uniformly; (3) Adding 5-10 parts of diluent and 2-6 parts of curing agent, and continuously stirring to obtain mixed slurry; (4) Solidifying the mixed slurry to obtain a finished product; The molar ratio of the curing agent to the high polymer resin in the step (4) is controlled to be 1:1.05-1.1, and the mass ratio of the curing agent to the waterproof filler is 8% -40%.
  6. 6. The preparation method of the high-viscosity polymer coating according to claim 5, wherein the surface modification treatment in the step (1) adopts a silane coupling agent for modification, the dosage of the coupling agent is 1-3% of the mass of the water-resistant filler, and the treatment temperature is 80-100 ℃ and the treatment time is 1-2 hours; the stirring rotating speed of the step (2) is 600-900r/min, and the stirring time is 30-60min; the stirring rotating speed of the step (3) is 500-600r/min, and the stirring time is 20-40min; And (4) adopting a hot air circulation curing box, wherein the curing temperature is 100-150 ℃ and the time is 1.5-3 hours, the heating rate is 5 ℃ per minute, and ventilation is kept.
  7. 7. The method for using the high-viscosity polymer coating, which is characterized by comprising the following steps of: (1) Polishing and dedusting the construction base layer, removing greasy dirt and loose impurities, and ensuring that the water content of the base layer is less than or equal to 8%; (2) Coating a special roughening agent on the surface of the cleaned base layer to form a rough surface, and curing for 2-4h; (3) Brushing a special base coat matched with the paint, wherein the thickness is 0.2-0.3mm, and drying for 6-8h at normal temperature; (4) Spreading the matrix reinforcing material on the dried surface of the bottom coating, compacting and attaching to ensure no wrinkles and hollows; (5) The high-viscosity polymer coating according to any one of claims 1-4 is coated on the surface of the matrix reinforcing material, the coating thickness is 1.5-2.0mm, and the curing is carried out at normal temperature for 24-48h.
  8. 8. The method for using the high-viscosity polymer coating according to claim 7, wherein the polishing roughness Ra1.5-3.0 μm of the base layer in the step (1) is less than or equal to 8% of water content, and the repairing mortar is used for filling when the crack width is more than or equal to 0.3 mm; the roughening agent in the step (2) is prepared from cement, quartz sand and acrylic emulsion according to the mass ratio of 1:0.8:0.3, the coating thickness is 0.5-0.8mm, and the curing is carried out for 2-4h.
  9. 9. The method for using the high-viscosity polymer coating according to claim 7, wherein the primer coat in the step (3) is prepared from polymer resin, a diluent and an adhesion promoter according to a mass ratio of 7:2:1, and has a thickness of 0.2-0.3mm and is dried for 6-8 hours; The carcass reinforcing material in the step (4) is 100-150g/m2 polyester non-woven fabric, and the lap joint width is 50-80mm; the surface coating in the step (5) is painted twice, the thickness of the first painting is 0.8-1.0mm, the second painting is carried out after the drying for 12 hours, the total thickness is 1.5-2.0mm, and the curing is carried out at normal temperature for 24-48 hours.

Description

High-viscosity polymer coating and preparation and use methods thereof Technical Field The invention relates to the technical field of high polymer coating, in particular to high-viscosity high polymer coating and a preparation method and a use method thereof. Background The high-viscosity polymer coating has the advantages of convenience in construction, good waterproof effect and the like, and is widely applied to waterproof projects such as building roofs, basements, kitchens and bathrooms. However, the existing high-viscosity polymer coating still has obvious defects in practical application, namely, on one hand, part of the coating is subjected to construction fluidity pursuing and a large amount of diluent is added, so that the proportion of a film forming substance is reduced, the coating is loose in structure after being cured, the phenomenon of peeling off the surface easily occurs after long-term use, and the waterproof integrity is affected, on the other hand, the coating is insufficient in adhesive force with a base layer, if the base layer is improperly treated in the construction process, the problems of peeling off and hollowing of a waterproof coating and the base layer easily occur, rainwater is led to permeate between the base layer and the coating, a waterproof system is damaged, and the service life is shortened. Disclosure of Invention In view of the foregoing, it is an object of the present invention to provide a high-viscosity polymer coating and a method for preparing and using the same, which at least partially solve the problems set forth in the background art. Therefore, the invention aims to provide the high-viscosity polymer coating and the preparation and application methods thereof, which have the advantages of excellent film forming quality, strong adhesive force and good waterproof durability. The invention provides a high-viscosity polymer coating which comprises, by weight, 60-80 parts of polymer resin, 15-25 parts of water-resistant filler, 3-8 parts of waterproof auxiliary agent, 5-10 parts of diluent and 2-6 parts of curing agent. Further, the high polymer resin is at least one of epoxy resin and polyurethane resin with the solid content of 90-98%, and the diluent is at least one of acetone and ethyl acetate. Further, the waterproof filler is at least one of talcum powder, heavy calcium carbonate and fumed silica with the particle size of 10-50 mu m, and the waterproof auxiliary agent is at least one of organosilicon waterproof agent and fluorocarbon waterproof agent. Further, the curing agent is at least one of an amine curing agent and an isocyanate curing agent, and the molar ratio of the curing agent to the high polymer resin is controlled to be 1:1.05-1.1. The invention also aims to provide a preparation method of the high-viscosity polymer coating, which comprises the following steps: (1) Carrying out surface modification treatment on the waterproof filler and drying; (2) Mixing and stirring the high polymer resin, the modified filler and the waterproof auxiliary agent uniformly; (3) Adding a diluent and a curing agent, and continuously stirring to obtain mixed slurry; (4) And solidifying the mixed slurry to obtain a finished product. Further, the surface modification treatment in the step (1) adopts a silane coupling agent for modification, the dosage of the coupling agent is 1-3% of the mass of the waterproof filler, and the treatment temperature is 80-100 ℃ and the treatment time is 1-2 hours; the stirring rotating speed of the step (2) is 600-900r/min, and the stirring time is 30-60min; the stirring rotating speed of the step (3) is 500-600r/min, and the stirring time is 20-40min; And (4) adopting a hot air circulation curing box, wherein the curing temperature is 100-150 ℃ and the time is 1.5-3 hours, the heating rate is 5 ℃ per minute, and ventilation is kept. The invention also provides a use method of the high-viscosity polymer coating, which comprises the following steps: (1) Polishing and dedusting the construction base layer, removing greasy dirt and loose impurities, and ensuring that the water content of the base layer is less than or equal to 8%; (2) Coating a special roughening agent on the surface of the cleaned base layer to form a rough surface, and curing for 2-4h; (3) Brushing a special base coat matched with the paint, wherein the thickness is 0.2-0.3mm, and drying for 6-8h at normal temperature; (4) Spreading the matrix reinforcing material on the dried surface of the bottom coating, compacting and attaching to ensure no wrinkles and hollows; (5) The high-viscosity polymer coating according to any one of claims 1-4 is coated on the surface of the matrix reinforcing material, the coating thickness is 1.5-2.0mm, and the curing is carried out at normal temperature for 24-48h. Further, the base layer polishing roughness Ra1.5-3.0 mu m, the water content less than or equal to 8% and the crack width more than or equal to 0.3mm are filled by repair