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Technology Service

1.Term definition

    Fineness:is the size of the largest granular,shown as μm.
    Viscosity:is the consistence of the paint,shown as s.
    Solid content: is the weight ratio of resin, filling object of pigment, additives,etc.
    Dry time: is the time need from liquid paint film to solid paint film.It is shown as hour(h) or minute(m).
    Luster: is the mirror opposite progress of light of the paint film surface. It is shown as percent (%).
    Thickness:is the thickness of paint film after the curing or drying. It is shown as μm.
    Hardness: is the solid degree after the curing of paint film or drying.
    Toughness: is the unbreakable capacity ofter the curing or drying of paint film when it is bent. It is shown as mm.
    Adhesion:is the capacity of combination of coating surface fixness after the curing and drying.
    Impact resistance:is the unbreakable capacity and impact-resistance capacity after the curing or drying of the paint film. It is shown as cm.
    Water resistance: is the resist hydrolysis and penetration capacity after the curing or drying of the paint film. It is shown as hour(h).
   

2. Painted surface treatment

    Coated before being painted very important for the surface treatment is directly related to the performance and service life of the paint film before the performance of the paint film and coated painted surface treatment is correct and complete or not directly related to be paintedsurface treatment technology is a complete system, select the corresponding appropriate surface treatment technologies for different materials, different specifications of the coated object.this manual is only an overview of the steel coatedcover before the surface treatment, other materials surface treatment please refer to other appropriate instructions.
 

3.Common problems and corrective and preventive measures

    Dulling:Varnish opaque, turbid phenomenon called dulling mainly due to improper selection of the amount of solvent and moisture absorption, moisture content, the reaction is incomplete, low storage temperature, monomer precipitation caused by replacing the solvent, filtration, the skillet reaction, improvementstorage temperature and other solutions.
    Thickens:Saponification with the alkaline pigment, packaging cans leak, solvent evaporation, mixed with water or pigment-containing water, the storage temperature is too high to make Paint accelerate the polymerization, the storage temperature is too low by cold precipitation.the first four reasons can be added to the corresponding solvent containing water can be added to the amount of butanol stir adjusted to normal after the temperature is too low
    Caking precipitation:the pigment deposited on the bottom of the cans, or even to form lumps of the phenomenon is known as sedimentation or agglomeration was mainly due to the storage time is too long, the pigment material particles too coarse
    Blister:the paint film surface of the different sizes of circular protrusion phenomenon known as the blister is not dry primer coating topcoat, solvent evaporation is too fast or baking finish prematurely into the drying room, paint by brushing force is too large, rollpaint roller coating rollers rotate too fast, the bubbles are difficult to completely overflow, construction temperature is too high, the first coating the coating is too thick, the surface to be painted with water or construction environment is too humid in the porous surface to be paintedcoated with quick-drying paint. Blister for different reasons, the prevention and treatment measures are also different.

4. Construction Notes

  1. Fully stirred before use.
  2. When need to use thinner, use the matching thinner; supporting curing agent, when need to use the curing agent.
  3. Be?painted?to?do?surface treatment?as required
  4. Operator should wear as required, the construction site to maintain good ventilation.
  5. The?paint?should be stored?in cool, ventilated?and dry warehouse
  6. Do not?mix?with?other?products
  7. Testing or?consulting?engineers?to determine?the most appropriateconstruction methods
  8. Other related matters, please refer to the corresponding product specifications.

 

5.Fire prevention

  1. Environment should be strengthened, exhaust ventilation to reduce the solvent concentration in the air, must not exceed the required standards.
  2. Timely treatment or soaked in water, not accumulation, otherwise easily spontaneous combustion when the temperature reaches the ignition.
  3. The construction of spaces iron colliding with each other and use the easy-sparking tools and construction are not allowed to wear nail shoes.
  4. Construction?spaces non-smoking?and?store?lighters, matches,prohibit?welding,?construction?shall not?carry?lighters, matches oropen flame?device?to?enter?the?construction site.
  5. Periodic inspection of electrical wiring and electric motors whether normal operation, construction field required to use with explosion-proof devices, lighting lamps, electrical appliances and equipment shall not be likely to cause sparks.
  6. Construction site equipment, pipes, containers must be reliable conductive ground connection to avoid static electricity to cause a fire.

6. Toxic prevention

In the construction process, will produce large amounts of volatile gases, such as inhaled, will produce the symptoms of the nervous system, such as dizziness, palpitations, nausea, vomiting and other adverse reactions.Part of the paint contain toxic pigments, long-term exposure can cause poisoning. Construction, protective measures should be done in order to protect the health of the construction by the body.

7. Safety precautions   

  1. Operation, construction workers need to wear good overalls, gloves, masks and hats and other protective clothing to reduce the intake of solvents and paint mist, to avoid injury.
  2. The construction site must have good ventilation in a timely manner to drain solvent and paint mist.
  3. To prevent the mist attached to the bulb, motor starting equipment and distribution equipment should be explosion-proof performance, and installation of wire basis having explosion-proof grade.
  4. During the construction process, construction workers found to have symptoms such as headache, dizziness, nausea, you should immediately leave the construction site.warm water, soap or industrial detergent If the eyes are contaminated, the application of rinseat least 10 minutes and seek medical advice immediately found signs of acute poisoning, should take immediate medical attention.
  5. Mandatory in the construction of a closed environment must be set explosion-proof ventilation equipment, periodic emissions of harmful gases
  6. Construction is completed, the application of soap to wash hands, face and other exposed body parts.
Copyright(C)2012,Foshan Jingsha Chemical Co.,Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle
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