Common problems and treatment methods of FRP production
Time:
2023-03-13
Gelcoat wrinkle skin, the formation of the cause: gelcoat curing insufficient to carry out the next step of work, solution: according to the environmental temperature and humidity, adjust the formula, fully solidified after the construction
1, gelcoat layer wrinkle skin
Formation reason: Gelcoat curing insufficient to carry out the next work
Solution: According to the ambient temperature and humidity, adjust the formula, solidify fully before construction
2. Uneven color
Formation reason: color paste has expired or stratification, color paste after adding uneven mixing.
Solution: Before the use of color paste, fully stir, after adding resin should also be fully stirred.
3, the surface layer has debris
Formation reason: by soot, dust, insect pollution
Solution: Keep the operation place clean and clean
4, the product surface sticky
Formation reason: resin does not contain enough wax
Solution: Add wax liquid to resin.
Formation reason: mixed with other water or other solvents
Solution: Clean the operating place and tools, and try not to add solvent in the resin.
Formation reason: insufficient addition of cobalt water and curing agent
Solution: appropriate increase cobalt water, methyl ethyl ketone amount
5, serious glue flow
Formation reason: insufficient addition of cobalt water and curing agent
Solution: appropriate increase cobalt water, methyl ethyl ketone amount
Formation reason: resin viscosity is too small
Solution: Appropriate amount of thixotropic agent can be added
6. Product stratification
Formation reason: glass cloth quality is poor or wax
Solution: dewaxing treatment or replacement of glass cloth.
Formation reason: improper operation, too much resin or too little
Solution: The use of defoaming stick carefully operated, so that the resin content is uniform
7, more bubbles
Formation reason: improper selection of glass cloth
Solution: Use suitable glass cloth
Formation reason: resin viscosity is too large
Solution: Add proper amount of styrene, adjust viscosity, roll with a stick.
Formation reason: excessive amount of resin
Solution: appropriate control of glue content
8. The product is white
Formation reason: resin mixed with water or damp.
Solution: Pay attention to resin storage conditions: glass cloth drying before construction.
Cause: The operating environment humidity is too high.
Solution: Control the ambient temperature and humidity.
9. Burnt product
Formation reason: the product is too thick
Solution: The thickness of disposable molding products is controlled below 10mm
Cause of formation: curing is too intense
Solution: Reduce the amount of accelerant
10, poor curing
Formation reason: the amount of curing agent, accelerator is too small
Solution: increase the amount of accelerant and curing agent
Formation reason: the activity of curing agent is too poor
Solution: Replace the curing agent
Formation reason: curing agent is not mixed well
Solution: Stir the ingredients thoroughly
Formation reason: glass cloth water too much
Solution: Use glass cloth after baking
11. Uneven thickness
Cause: The glass cloth is not laid properly
Solution: Focus and practice carefully
Formation reason: too much resin, glass cloth shift
Solution: Control the amount of glue
12. Product warping
Formation reason: product area is too large
Solution: appropriate reinforcement
Cause of formation: incomplete release after curing
Solution: Release the mold after the product is cured
13, product deformation
Formation reason: mold deformation
Solution: Repair and correct the mold
Cause: improper placement after demoulding
Solution: Use bracket to support the product after demoulding
14. Local contraction
Formation reason: local resin too much
Solution: Do not let the corner, groove resin stagnation too much
Formation reason: local thickness is too large
Solution: The product solidifies fully and then stiffens
15. Demoulding is difficult
Formation reason: mold design
Solution: Mold design as far as possible to avoid right angles
Formation reason: curing agent, promoting dose is insufficient
Solution: extend demoulding time
Cause of formation: no release agent applied or poor release agent used
Solution: Use a better release agent
Formation reason: resin mold is not suitable for: mold has hard mold, soft mold, such as: S30127 is not suitable for hard mold
Solution: Choose suitable mold
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