Introduction

Epdm foam strip is a plastic made of epoxy resin and filled with numerous micro-pores.

Types

One is the combination foam powder, containing resin, curing agent, foaming}S, wetting agent and control the curing process exothermic organic compounds, such as toluene; the second is the liquid epoxy foam system containing the same ingredients: but the curing agent needs to be added before casting after the other components are mixed.

There are low density (relative density Yan U.U64], medium density (relative density n.nr,} a 0.32) and high density (relative density 7U.32) three.

Product characteristics

With good physical and mechanical properties and electrical properties excellent solvent resistance, moisture resistance and dimensional stability. Uniform density, complete foam curing, small seainess, low permeability, non-combustible and light weight. It is made by mixing and foaming epoxy resin, curing agent, foaming agent, etc.

Application

Mostly used in electronic and aerospace industry, preparation of electric household components, aircraft navigation with parts, fire retardant, dielectric components of force plant, aircraft structural parts… Floating material. Amphibious tank floating simple and ammunition box, etc.

Epoxy resin defoamer of two common foaming phenomenon

Epoxy resin in the mixing process or curing process, it is easy to produce a large number of bubbles, affecting the production process of the product, if you do not choose the right defoamer products, not only can not achieve the ideal defoaming effect, but also wasted a lot of time in doing tests, making the cost is invariably higher, so it is very important to choose a strong defoamer manufacturers.

1.Bubbling in the mixing process

When air enters it, along with rapid stirring and other operations, the liquid produces a large number of bubbles due to the “vacuole effect”. These bubbles can be divided into our naked eye and the naked eye is not visible two, for some physical defoaming method, like vacuum defoaming can only eliminate the visible bubbles, for the existence of fine bubbles in the liquid to eliminate the effect is not good.

2.Bubbles generated in the curing process

As the production of epoxy resin is cured by polymerization reaction, this reaction is exothermic, so in the curing reaction, as the reaction proceeds, the temperature rises so that the fine bubbles in the epoxy resin system are expanded by heat, the gas is no longer compatible with the epoxy system and will migrate to form larger bubbles together.

In view of the foam problem in the epoxy resin production process, the epoxy resin defoamer developed by Xinwancheng has special defoaming effect in epoxy resin, AB glue, flooring paint and other systems, especially for fine foam with more excellent effect. It has the advantages of low dosage, fast defoaming, long foam inhibition time, good water solubility, no oil spot, etc. It will not affect the film formation and will not produce shrinkage, fish eyes and other problems.