Epoxy resin often accompanies the volume that has fixed rate to contract in solidify process, systole of this kind of bulk makes epoxy resin is sealed as fill expect and cause stress craze, make fill is sealed thereby make waste product. Contract to improve the bulk of epoxy resin, reduce stress craze, normally method is will many filling in joining epoxy resin. Oxygen of this kind of annulus is added filling a system to attribute a kind of strong dispersive put oneself in another's position is, include the system of polyphase and small area namely, the existence of filling is right of epoxy resin stream change the effect with behavior distinct generation, here is necessary to undertake bat around.
One, the factor that affects strong dispersive system to shed denaturation to pledge
Affecting strong dispersive system to shed the element with qualitative denaturation basically is physics and chemical element.
(1) physical element
The hydromechanical interaction between ① dispersive medium and particle, grain produces interference to cause streamline distortion to the streamline of strong dispersive system. For example, the interference that the interference of line of convection of fiber shape filling compares bulbiform filling is big.
The liquid is withheld between ② bead subgroup, tall shear rate falls a structure to destroy, cause the change of streamline thereby.
The machinery between ③ particle is contacted, bring dimensional effect and grain attrition movement.
The flow of film of ④ particle interface.
Anyhow, hydromechanical interaction has multiform, distortion of individual particle streamline, a certain number of particle interaction causes streamline distortion, cause the change that sheds denaturation to pledge thereby. If have hydromechanical interaction only, fluid or Newton, and still have mechanical action and chemistry actually, these action often bring blame Newton sex.
(2) chemical element
The electrostatic effect that ① causes by electric double layer, it is repulsion mostly, also have gravitational force.
② Fan Dehua force, namely appeal, this is the main reason that makes filling particle disperses not easily.