High quality, environmentally friendly, heat-resistant glass flake adhesive, environmentally friendly, non-toxic, high-temperature glass flake construction

North High Quality Environmental Protection High Temperature Resistant Glass Flake Adhesive Cement Environmental Protection Non Toxic High Temperature Glass Flake Construction

High quality, environmentally friendly, heat-resistant glass flake adhesive, environmentally friendly, non-toxic, high-temperature glass flake construction

High quality, environmentally friendly, heat-resistant glass flake adhesive, environmentally friendly, non-toxic, high-temperature glass flake construction

For the anti-corrosion of the glass flakes inside the desulfurization tower body and some of the outlet flue gas ducts, a special anti-corrosion construction plan for the absorption tower has been developed.
Main coating structure construction process flow
Construction process of ordinary coating structure glass flakes for anti-corrosion of desulfurization tower
Substrate acceptance → Surface purification → Sandblasting treatment → Brushing or rolling one coat of primer → Drying → Scratching one coat of adhesive → Inspection and repair → Scratching the second coat of adhesive → Inspection and repair
Construction process of anti-corrosion glass flake FRP reinforced coating for desulfurization tower
Substrate acceptance → Surface purification treatment → Sandblasting treatment → Brushing or rolling a primer coat → Drying → Scratching a layer of glass flake adhesive → Inspection and repair → Scratching a second layer of glass flake adhesive → Resin lined fiberglass cloth layer → Drying → Resin lined fiberglass cloth layer → Drying → Surface coating → Final inspection (electric spark, etc.) → Acceptance
Construction process of anti-corrosion and wear-resistant glass flake coating for desulfurization tower
Substrate acceptance → Surface purification treatment → Sandblasting treatment → Brush or roll coating with one coat of primer → Drying ->Scrape glass flake adhesive * coat → Inspection and repair → Scrape the second coat of glass flake adhesive → Resin lined fiberglass cloth layer → Drying → Wear resistant layer layer → Drying → Resin lined fiberglass cloth layer → Wear resistant layer second coat → Drying → Surface coating → Drying → Final inspection (electric spark, etc.) → Acceptance
Main standard requirements before coating construction
1. Surface preparation 5.1.1 The lining surface of the lined steel shell must be flat, and the structural edges and corners must have smooth transitions. All horizontal and vertical welds that require lining must be continuous and full, and kept smooth with the connecting surface.
1.2 For equipment that requires on-site anti-corrosion, welding shall be carried out according to the requirements of steel structure welding standards, and all corners and edges of the lining shall be polished.
1.3 Remove all welding slag from the surface by cutting and then polishing until smooth.
1.4 All internal and external reinforcements, lifting rings, supports, and clamps should be welded to the container or pipeline before the lining construction begins. Temporary clamps or lifting rings must be removed before construction, and the area must be polished smooth. After the completion of the steel shell, it shall be inspected and delivered for anti-corrosion work according to the requirements of the design and drawings. The surface of the equipment lining should achieve local flatness, and the corners should have smooth transitions. The rounded radius of the convex corner surface should be greater than 5mm, and the concave corner surface should be greater than 10mm. Local unevenness (including welding joints) should be less than 3mm, and after polishing, the thickness of the shell must be greater than the minimum thickness designed by the equipment. Surface defects such as pitting, cracks, undercutting, scratches, and scales must be polished and removed, and repaired by welding where necessary. Welding must be polished flat, smooth, and free of slag inclusions or pores.
Main process flow of sandblasting construction
1. Sandblasting construction
1.1 Select dry mineral sand with a particle size of 0.5-3.0mm and water chestnuts.
1.2 The sandblasting gas is clean and dry compressed air at 0.5-0.8Mpa.
1.3 Nozzle selection: Wear resistant nozzle.
Wear sandblasting clothing for sandblasting operations, and check that all pipelines are intact and unobstructed before starting construction work.
The sandblasting sequence is from difficult to easy, with the direction of the spray gun running parallel to the surface of the workpiece, and the spray gun working at a certain angle to the working surface.
Cleaning after sandblasting
During sandblasting, use a high-power explosion-proof axial fan for ventilation and dust removal.
2.2 The floating dust and sand particles on the surface and frame plate should be cleaned by blowing with compressed air first.
2.3 Clean the oil stains with styrene.
3. Control of climate conditions in the work area: T=10~40C?? The relative humidity (RH) of the air is less than 89%
Construction specifications for various coating structures
1. Conventional glass flake coating structure (non FRP reinforced structure).
1.1 Primer construction
1.1.1 Primer construction shall be carried out by rolling or brushing, and the construction process shall be checked at any time. Any phenomena such as sagging or missing coating shall be smoothed or re brushed with a roller or brush.
1.1.2 During the construction process, test the wet film thickness and apply makeup to areas less than 60Um.
1.1.3 Material preparation:
(1) Preparation ratio: Paint: Initiator: Accelerator=100:1.5:0.8 (weight ratio) (or adjusted according to climate conditions)
(2) Preparation method: Mix the primer evenly with a blender, then add the initiator and curing agent and mix and stir for 1-2 minutes;
(3) Professional batching personnel mix ingredients and record the batch number and dosage of materials.
1.1.4 Operation points:
(1) The rolling coating method is to roll back and forth from top to bottom, left to right, and evenly distribute the material.
(2) Brush paint on corners or areas where the roller is difficult to construct.
(3) Wet film thickness testing shall be conducted at least 5 points per 10m2, and areas with wet film thickness less than 60um shall be re coated.
1.1.5 Control of climate conditions in the work area: (meets standard requirements)
Construction of 1.2 * layer base scale lining
1.2.1 Confirmation items before construction:
(1) When the humidity is high or there is condensation, a dehumidifier must be used for dehumidification.
(2) Confirm whether there is any powder layer or other foreign matter adhering to the lining after brushing the primer. If there is, it must be cleaned thoroughly.
1.2.2 Mixing of lining materials
(1) Preparation ratio: Paint: Initiator: Accelerator=100:1.0:0.5 (weight ratio) (or adjusted according to climatic conditions)
(2) Mix thoroughly with a handheld blender after blending.
1.2.3 Construction essentials of lining
(1) Use a mud trowel and roller for construction to ensure even thickness and meet the expected requirements.
(2) Dip a roller into the small amount of styrene and gently roll the coated scales to adjust the surface.
(3) Ensure that the average wet film thickness of each layer of coating is controlled at around 0.4-0.5 centimeters.
Intermediate inspection of 1.3 * layer base scale lining
1.3.1 Appearance inspection
Visually inspect and touch to confirm that there are no defects such as bubbles, scars, sagging marks, unevenness, poor hardening, etc.
1.3.2 Film thickness inspection
Use a magnetic or electromagnetic thickness gauge to measure at a distance of 2m2 to confirm the thickness of the lining.
1.3.3 Handling of non-conforming areas
(1) Insufficient thickness must be supplemented.
(2) Use a grinding machine to smooth out protrusions, surface scars, sagging marks, bubbles, and other areas while ensuring thickness.
1.4 Construction of second layer base scale lining (similar to * layer)
Repeat the process, ensuring that the average wet film thickness of each coating is controlled at around 0.4-0.4 mm.
1.5 Surface layer construction
1.5.1 Confirmation items before construction
(1) When the humidity is high or there is condensation, a dehumidifier must be used for dehumidification;
(2) Confirm the hardening status of the scales on the previous base layer.

VEGF series desulfurization tower system anti-corrosion glass flakes - resin glass flake adhesive paste
1. Construction Basis
HG/T 2640-2004 "Technical Conditions for Construction of Glass Flake Lining" 2. Construction Procedure
Substrate inspection - Sandblasting treatment of substrate - Primer application - Glue application (with two coats of foam, each layer thickness of about 1.0mm) - Local FRP reinforcement (internal and external corners, etc.) - Quality inspection and repair acceptance - Topcoat application
VEGF series desulfurization tower system anti-corrosion glass flakes - resin glass flake adhesive paste
1. Construction Basis
HG/T 2640-2004 "Technical Conditions for Construction of Glass Flake Lining" 2. Construction Procedure
Substrate inspection - Sandblasting treatment of substrate - Primer application - Glue application (with two coats of foam, each layer thickness of about 1.0mm) - Local FRP reinforcement (internal and external corners, etc.) - Quality inspection and repair acceptance - Topcoat application 3. Introduction to each construction process (1) Substrate inspection:
The main inspection items are: ① Whether the equipment structure can undergo scale lining construction (if there are narrow gaps in the local structure inside the equipment, construction tools cannot penetrate into them), ② Grinding of welds, requiring that the height of the weld is not higher than 0.5mm above the substrate and ensure smooth transition with the substrate, ③ The corner radius R of the internal and external corners must be ensured to be greater than 5mm. (2) Sandblasting treatment:
The requirement for sandblasting treatment of the substrate for scale lining is Sa2.5 level, which means that the surface of the metal substrate after sandblasting treatment should present a "silver white" color, and the steel surface should be free of visible grease, dirt, oxide scale, rust, paint coating and other attachments. Any residual traces are only slight color spots in dots. (3) Primer application:
After sandblasting, the surface should be coated with primer within one work shift (8-12 hours) or before visible surface rust spots appear. If surface rust occurs, the rusted area will be re sprayed according to the above requirements. Apply primer by brushing or rolling. Add curing agent and accelerator to the primer according to the corresponding proportion based on the on-site environmental temperature, stir evenly, and then use (note: promote)
It is strictly prohibited to add both the accelerator and curing agent at the same time. The accelerator should be added first and stirred evenly before adding the curing agent and stirring evenly.
Primer application is not allowed when any of the following conditions exist: - the relative humidity in the work area is greater than 85% - the temperature of the metal surface does not exceed the dew point temperature of the air in the work area by 3 ℃. When the temperature of the metal surface or the air temperature in the working area is higher than 32 ℃ or lower than 5 ℃. The primer layer applied to metal surfaces with dust, stains, or moisture should be uniform, without any omissions or obvious flow marks.
4) Apply adhesive plaster:
When applying adhesive, the primer layer must have already cured and be exposed to air for no more than two weeks. The construction of scale adhesive paste adopts the method of applying and rolling.
The construction operation of plastering and rolling is carried out by workers using tools such as trowels and ash knives to apply a certain thickness and a certain amount of coating
Apply the coating direction to the protected surface, then use a roller (with uniform direction) to smooth, remove bubbles, compact, flatten, and arrange the scales in the specified direction before curing and forming. (Completed in two stages, using a wool roller dipped in a small amount of rolling fluid for rolling)
According to the temperature of the on-site environment, add curing agent and curing agent to the scale adhesive in the corresponding proportion and stir evenly before use (note: it is strictly prohibited to add both curing agent and curing agent at the same time, and the curing agent should be added first and stirred evenly before adding the curing agent and stirring evenly).
The construction environment for flake adhesive is the same as that for primer application
(5) Local FRP reinforcement layer:
The structural stress is relatively concentrated in the internal and external corners, manholes, supports, and connecting pipes of the equipment. Due to the fact that the scale lining material is a thermosetting material, significant thermal stress concentration will be formed in these areas during the material curing process. To ensure the quality of the anti-corrosion layer in these areas, a layer of FRP reinforcement layer needs to be added to these areas to ensure the quality of the anti-corrosion layer. FRP lining is generally done by hand pasting method, and the lining sequence should be from the facade to the plane, from top to bottom, from inside to outside, and from wall to bottom. Generally, the intermittent method is used for construction. First, apply adhesive material, then use lining cloth or felt to drive away bubbles and stick them tightly. Then, apply adhesive material on top until the mortar cloth or felt is fully penetrated. After the construction of FRP lining, its quality should be checked. If there are defects such as burrs, flowing, bubbles, etc., they should be removed and repaired. Only after passing the inspection can construction continue. After curing, a comprehensive quality inspection should be conducted, and any defects found should be repaired. The construction environment requirements for FRP reinforcement layer are the same as those for primer coating. According to the temperature of the on-site environment, add curing agent and curing agent to the FRP adhesive solution in the corresponding proportion and stir evenly before use (note: it is strictly prohibited to add both curing agent and curing agent at the same time, and the curing agent should be added first and stirred evenly before adding the curing agent and stirring evenly). (6) Construction process of local wear-resistant layer
There is significant wear on the anti-corrosion area, and an additional wear-resistant layer with a thickness of not less than 1.5mm needs to be applied on top of the scale adhesive coating to ensure the quality of the anti-corrosion layer. Apply the wear-resistant layer after the adhesive has been applied and cured.
The application process of the wear-resistant layer is the same as the construction process of the flake adhesive, that is, the application roller pressing method is used for construction.
The application and rolling construction operation is carried out by workers using tools such as trowels and ash knives to apply a certain thickness and direction to the protected surface. Then, after being pressed and smoothed, defoamed, compacted, flattened, and arranged in the specified direction, it is solidified and formed.
The proportion of wear-resistant layer materials is as follows:
Wear resistant adhesive solution volume: Wear resistant particles (70-140 mesh refined wear resistant powder): Curing agent: Accelerator=100:240:0.2 Wear resistant layer preparation process is as follows: North China's largest glass flake adhesive anti-corrosion manufacturer, ranking of domestic anti-corrosion glass flake manufacturers
Weigh a certain amount of wear-resistant adhesive solution, add refined wear-resistant powder according to the proportion, stir evenly, and then add the accelerator. After the accelerator is stirred evenly, add the curing agent and stir for 2-3 minutes. After the curing agent is stirred evenly, apply the coating.
(6) Quality inspection and repair acceptance
After the completion and solidification of the anti-corrosion layer construction, quality inspection shall be carried out on the constructed anti-corrosion layer according to the design requirements
Divided into visual inspection, thickness detection, and pinhole detection. When the design requirements are not met, it is necessary to repair the anti-corrosion layer, and the repair process is similar to the construction process of the scale lining.
① Visual inspection: It is required that the surface of the anti-corrosion layer is uniform and flat as a whole, without any omissions or particularly obvious unevenness. ② Thickness detection: Thickness detection is carried out using an electromagnetic thickness gauge according to the design thickness requirements
Measure 3 points per square meter to meet the requirements of the lining design thickness. If the thickness does not meet the requirements, apply another layer of flake adhesive to meet the design thickness requirements and pass the thickness test until it is qualified. The thickness of the scale lining in the flue area is 2mm.
③ Electric spark detection: Conduct 100% comprehensive pinhole detection on the anti-corrosion layer through an electric spark detector. When it is found
When there are pinholes, they should be repaired until they pass the electrical discharge test. The repair process is as follows: surface treatment (completed by polishing, i.e. polishing the non-conforming parts to the bottom layer) - application of scale adhesive - testing. The voltage for spark detection is 7000V. (The detection voltage increases by 3000V for every 1mm increase) (8). Topcoat:
After all anti-corrosion layers have passed the inspection, apply a layer of topcoat on the surface of the inner lining layer. The application and process requirements for topcoat are the same as those for primer. Add curing agent and accelerator to the topcoat according to the corresponding ratio based on the on-site ambient temperature, stir evenly, and then use (note
Meaning: It is strictly prohibited to add accelerators and curing agents simultaneously. Accelerators should be added first and stirred evenly before adding curing agents and stirring evenly.
4. The ratio of curing agent and accelerator
The amount of curing agent added is 1.5% -3.5% of the material amount, and the amount of accelerator added is 10% of the curing agent. Adjust according to the high or low ambient temperature. When the ambient temperature is high, reduce the amount of curing agent and accelerator added; When the temperature decreases, increase the amount of curing agent and accelerator added. Before construction, first conduct a small sample test to determine the amount of curing agent to be added. The control point is to add curing agent and accelerator and stir evenly for about 60 minutes before starting curing. (It is strictly prohibited to add accelerators and curing agents at the same time. Accelerators should be added first and stirred evenly before adding curing agents and stirring evenly.)

The largest glass flake adhesive anti-corrosion manufacturer in the north, ranked among domestic anti-corrosion glass flake manufacturers