Using method of silane coupling agent-Iota

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Service > Using method of silane coupling agent

Using method of silane coupling agent

Silane coupling agent used mainly surface pre treatment method and the direct addition method. The former is the dilution of silane coupling agent on the surface of the packing material, which is when the premixed resin and filler, adding coupling agent solution.
Silane coupling agent with a solution, in the material surface of the solution, the solvent is water and alcohol prepared into solution, the solution is generally silane (20%), water (8%), water (72%), alcohol is generally ethanol (for ethylene glycol), methanol (for ethanol, methanol); silane hydrolysis rate and pH value, neutral most slow, partial acid, alkali, and therefore generally need to adjust the pH value of the solution, in addition to amino silane, adjust pH value to 4-5, amino silane because of alkaline, do not need to adjust. Due to the hydrolysis of silane, can not be long time to save, the best is now with the use, suitable for an hour.
Here are some specific applications for user reference:
1, pre processing method: the filling into the solid mixer (high-speed solid mixer HENSHEL (Henshl) or V type solid mixer, etc.), and the above silane solution directly spraying on the filler and mixing, the higher the speed, the better dispersion effect. General mixing in 10-30 minutes (the slower the speed, the longer the time), the filler treatment should be at 120 degrees Celsius (2 hours).
2, silane coupling agent water solution (glass fiber surface treatment agent): glass fiber surface treatment agent often contains: film forming agent, antistatic agent, surface active agent, coupling agent, water. The dosage of coupling agent for glass fiber surface treatment agent of the total 0.3%-2%, 5 times of water solution first with organic acid or salt will pH is adjusted to a certain value, fully mixing, adding silane until transparent, then add the rest of the group of, for poorly soluble silane, available isopropanol assisted solution. In the drawing process, the glass fiber surface treatment agent is dry on the glass fiber, and the solvent and water can be removed.
3, bottom surface method: the 5%-20% silane coupling agent solution with the above said, through the coating, brush, spray, dip treatment substrate surface, remove the room temperature to dry for 24 hours, the best 15 minutes at 120.
4, directly adding method: silane can be directly added to the filler / resin mixture, in the resin and filler mixture, silane can be directly sprayed in the mixture. The dosage of the coupling agent is generally 0.1%-2%, which is determined by the size of the filler diameter. Then, the model of the resin / filler of the silane is added (extrusion, injection molding, coating, etc.).
Recommended proportioning ratio:
Packaging of silane coupling agents:
5KG plastic bucket, a box of 20KG (inside the 4 5KG plastic barrels)
200 KG 25Kg plastic barrels, plastic barrels, 200KG.
The storage Wang silicon coupling agent:
The silane coupling agent should be stored in the warehouse of sealing, avoiding light, ventilation and drying, and the shelf life is one year, and a year later, the qualified party can continue to use:
1 in the storage of silane coupling agent, to pay special attention to avoid contact with water or moisture and its contact with the occurrence of degeneration.
2 once the container is opened, the stopper should be replaced as soon as possible to prevent the infiltration of water.
3 storage room must be cool, high temperature and high humidity is absolutely not the storage of silane coupling agent

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