|
The amount of organic silane coupling agent
The amount of organic silane coupling agent
The amount of the organosilane coupling agent used depends on the type of the organosilane coupling agent and the specific surface area of ??the filler. The amount of the organosilane coupling agent can be calculated by the following formula: G = (M x A) / B where: The amount of organosilane coupling agent (g) with a filler (g)
(M '/ g) Silicone coupling agent The smallest package emblem area is precipitated from the solution of Ig organic silane coupling agent (m' / g) Covering the tomb that is filler, different organosilane coupling agent its minimum coating area is different, see Table 1. If the organosilane coupling agent of the smallest tax area and filler specific surface area is not clear, 1% by weight organic filler alkyl coupling agent that is filler, and then change the concentration, the experimental method to obtain the appropriate amount of organic brick coupling agent is generally used to deal with the substrate filler weight 0.1 -2%.
Use of organosilane coupling agent
There are three methods for using the organosilane coupling agent:
(1) surface rendering method: with organic silane coupling agent solution coated inorganic filler surface, such as glass, plastic or metal surface rendering belong to this category.
(2) the organosilane coupling agent liquid polymer and plastic material, the so-called holistic blending method.
(3) stick lawful, that is, the synthesis of the above two methods, the so-called finishing method. It is the use of organic silane coupling agent and often more than a variety of special additives, aqueous solution for surface treatment. This sorting can be done directly after the glass fiber is made.
7.2 The application of organic silane coupling agent With organic silane coupling agent to modify the inorganic filler, the specific operation is as follows: take inorganic filler weight of 0.5.1.0% of the organosilane coupling agent, with 2-5 times the disk of alcohol Aqueous solution (water ranol = 1/9). Dispersing a given amount of the inorganic filler to be treated was added to the mixer and stirred. The prepared organosilane coupling agent aqueous solution was added to the mixture in a few minutes under room a Continue to stir 5 -10mm, make it fully mixed. The temperature of the mixer was increased to 100-150 ° C at a constant rate, and the mixture was stirred for 30 - 60 mh and then cooled to room temperature
|
