In the process of textile silicone screen printing, the term "poisoning" usually refers to the adverse reaction between silicone and certain substances, resulting in the performance of silicone being reduced or failing to achieve the expected use effect. This poisoning phenomenon may be caused by the following possible reasons:
Cloth dye problem:
The dyes used in some black fabrics may contain environmentally unfriendly heavy metals, such as tin, lead, sulfur, etc., which may cause silicone poisoning when in contact with silicone, affecting its bonding performance and curing effect.
Cloth changes during heating:
During the heating process, high temperatures may carbonize the fibers on the surface of the fabric, which may also cause fabric poisoning, thereby affecting the bonding and curing of silicone.
Chemical pollution:
Silicone may come into contact with various chemicals during the screen printing process, such as compounds such as N, P, S, Sn, Pb, Hg, As, as well as putty, oil sludge, sculpture soil, clay, 3D printing photosensitive resin, etc., all of which may cause silicone poisoning.
Inappropriate release agent:
The improper selection and use of release agent may also lead to silicone poisoning. For example, using phosphorus-containing detergent water as a release agent, or uneven and inappropriate release agents may affect the performance of silicone.
Environmental factors:
Smoking, ammonia, halogens, etc. in the environment may also have adverse effects on silicone and cause poisoning.
In order to solve the poisoning problem in silicone silk screen printing of textiles, the following measures can be taken:
Choose environmentally friendly fabrics and dyes: Make sure that the fabrics and dyes do not contain harmful substances to reduce the pollution of silicone.
Control the heating process: Reasonably set the heating temperature and time to avoid carbonization of fiber filaments on the surface of the fabric.
Use appropriate chemicals: Avoid contact between silicone and chemicals that may cause poisoning.
Choose the right release agent: Make sure that the release agent is uniform and appropriate and will not have adverse effects on silicone.
Improve the working environment: Keep the working environment clean and ventilated to avoid the accumulation of harmful gases.