Liquid silicone products curing incomplete reasons you do not know
Does liquid silica gel product cure not do completely?
"KANGLIBANG" summarized six reasons for incomplete solidification of liquid silica gel, such as: too low temperature of liquid silica gel mold, too short curing time, contamination of injection pipe (feeding system) or mold, uneven mixing, low temperature of liquid silica gel material, and too low temperature of base material skeleton.
KANGLIBANG provides you with liquid silicone coated glue, free consulting silicone curing technical support.
Six liquid silicone products curing incomplete solution.
(1) the temperature of liquid silicone mold is too low
Reason: liquid silica gel is made of cl-100ab platinum by catalytic curing, and the thermal curing temperature is generally between 110℃ and 150℃. Different structure of liquid silica gel raw materials and liquid silica gel products will have different curing temperatures
Solution: appropriately raise the temperature of liquid silicone mold.
(2) the curing time of liquid silica gel is too short
Reason: the curing time of liquid silica gel was tested at 120℃.
Between 60S and 300S, the structure of silicone raw materials and liquid silicone products, the thickness of the gel, and the vulcanization time were significantly affected.
Solution: the curing time can be improved by prolonging the curing time at a certain temperature.
(3) contamination of feeding system such as injection pipe or metal mold
Reason: some lipid contaminants can destroy the vulcanization structure of liquid silicone.
For example, anti-rust oil on machine lubricants and molds and sweat grease on workers' hands can affect the vulcanization of liquid silicone
Solution: standardize the operation process of liquid silica gel, such as using a new plastic bucket mixed with liquid silica gel, cleaning the feeding pipe before feeding, cleaning the mold, the whole process requires workers to wear finger gloves or gloves to operate.
Liquid silicone products curing incomplete reasons why you do not know "connebon" liquid silicone coated glue
(4) the liquid silicone mixture is uneven
Reason: liquid silica gel is A/B agent of two components, before curing molding to fully mix evenly.
Solution: the mixing system adopts the same brand compatibility, adjust the speed and pressure of the mixer.
(5) liquid silica gel is too cold
Reason: when some companies temporarily do not produce, in order to extend the service life of liquid silica gel, they will often store the mixed glue at about 5℃ in cold storage and directly add it into production when using.
Solution: refrigerated storage of liquid silicone materials at room temperature to temperature consistent with the use.
(6) low temperature of adhesive base material (plastic or hardware)
Reason: for liquid silicone coated products, especially those with thick embedded products, the temperature in the workshop is low (mainly in winter).
Solution: preheat embedded objects such as metal, nylon, plastic, tempered glass, ceramics, wood (bakelwood), where the porous nylon and bakelwood are recommended to bake at 90℃.
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