It is divided into two types: high viscosity (HV) and low viscosity (LV). It can be used as a thickener, rheological control agent, adhesive, stabilizer, protective colloid, suspension agent and water retaining agent.;
In the petroleum extraction industry, PAC is a good drilling mud treatment agent and material for the preparation of completion fluid. It has a high pulping rate and good salt and calcium resistance.For freshwater mud, seawater mud and saturated brine mud, PAC is a good treatment agent for reducing filtration loss, and it has good viscosity lifting ability and high temperature resistance (150℃) ability.It is suitable for the preparation of fresh water, seawater and saturated brine completion fluids, and can be formulated into completion fluids of various densities under the weight of calcium chloride, and can make the completion fluid have a certain viscosity and low filtration loss.
Dissolution method
PAC (especially high-viscosity PAC) has a certain viscosity after being dissolved in water. If the dissolution method is improper, it will cause large agglomeration and affect normal use.The correct dissolution method is: you need to add an appropriate amount of water to the container first, stir quickly with a stirring stick, and add the PAC powder slowly and evenly dispersed. After adding, you need to stir for a while. Be careful not to form larger clumps as much as possible, and then stir for a while after half an hour.This half an hour is the time for PAC to swell. The process of dissolving PAC in water is to absorb water and expand before dissolving. Wait until the water is completely infiltrated into the PAC powder, and then stir well.If there is a large agglomeration, it can be decomposed into small pieces first, and then continue stirring and wait for the water to be completely wetted before it can be fully dissolved.The dissolution ratio of PAC to water can be determined according to actual needs. It is recommended to be 0.5-3%, and the solubility generally does not exceed 10%.If you want to accelerate the dissolution: 1.Dissolve with warm or hot water; 2.Use a high-speed mixer; 3.The instant-soluble PAC is selected. This product is not easy to clump after surface modification.
purpose.
1. Used in petroleum drilling, well drilling and other projects: PAC is a water-soluble polymer organic compound that is easily dispersed in all water-based drilling fluids, including freshwater, seawater, saturated brine and other drilling fluids. It is mainly used in offshore drilling and deep land wells. In low-solid-phase drilling fluids, PAC can significantly reduce filtration loss, reduce the thickness of mud cakes, and have a strong inhibitory effect on page brine.It is divided into three types: high viscosity (HV), low viscosity (LV), and medium viscosity (R).
2. Used in the coating industry: it is used as a thickener, suspending agent and film-forming agent in water-based coatings, which can make the product stable in storage and uniform in color, good mildew resistance, good leveling and easy to construct, and improve the flexibility and gloss of the coating.Use medium and high viscosity models, which have good thickening effect and storage stability.
3. Used in the papermaking industry: In the papermaking industry, it is widely used in the surface application of coated paper and lightly coated paper, and can be used as a paper smoothing agent, coating agent, and gluing agent.PAC is film-forming. Adding 0.1%-0.3% PAC to the pulp can increase the strength of the paper by 50% and increase the surface tension by 1-2 times. At the same time, the paper is uniform, the ink is easy to penetrate during printing, and the edges of the print are clear.On paper treated with an aqueous PAC solution, it is coated with metal salt solutions such as iron and lead, which can be made into waterproof and oil-proof paper.Application model: Generally use low viscosity and viscosity models to increase the solid content of the slurry.
4. Used in the construction industry: In construction, it is used in mechanized construction such as wall-building, stucco whitewashing, and caulking. After adding PAC, it can thicken and retain water and play a role in retarding condensation. It is convenient for large-scale construction and can also improve the strength of buildings.It is used for painting gypsum, pasting gypsum, caulking gypsum, and water-resistant putty, which can significantly improve water retention and paste strength, and has the characteristics of good ease and no cracking.Application model: Generally choose instant medium and high viscosity model.
5. Used in the ceramic industry: In ceramic glaze, PAC mainly plays the role of water retention, thickening, suspension and bonding, in order to control the rheology and drying time of the glaze, and improve the adhesion and binding force of the glaze.Application model: According to the differences in porcelain type, paste performance and seasonal temperature, various types of products with high and low viscosity are used; in ceramic blanks, PAC is generally used as a blanks enhancer, which can improve the plasticity of the blanks and the flexural strength of the blanks, and improve the yield of raw blanks. It is very suitable for large-scale vitrified bricks, white blanks with high content of oily raw materials, porcelain tiles, special ceramics, alumina materials, etc.
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