| abstract |
The invention relates to the field of biodegradable materials, in particular to a high-temperature water-soluble colored PVA particle and a preparation method thereof. The basic proportions of the components of the high-temperature water-soluble colored PVA particles: 60-85 parts of PVA, 10-30 parts of polyol plasticizer, 0.1-1.5 parts of pigment, 0.05-0.1 part of surface treatment agent, and 0.5- part of heat stabilizer 6 parts, 0.5-8 parts of antioxidants, 1-5 parts of lubricants, and 0.1-1 parts of anti-hydrolysis agents, the preparation method of which is to mix the components in a high-speed mixer and then add them to a melt-kneading equipment for mixing. It is obtained by refining and plasticizing, extrusion, granulation and drying. In the present invention, not only the continuous granulation of high-temperature water-soluble PVA can be realized, but also the problem of non-natural granulation of PVA can be solved. |