| Domestic PVC paste resin production methods are emulsion, micro suspension, mixing, production technology mostly from the United States, France, Germany and Japan.Tianjin Bohai Chemical Industry Co., Ltd. The production of paste resin MP-1700 G is the focus of the company's development, It is produced by micro-suspension for the production of PVC gloves, in order to improve product quality, outstanding product features, it is necessary for processes and performance to study,if the internal quality and external quality have been greatly improved, and rapid promotion of high-end medical fields to give authorized users, It can greatly enhance the paste resin products in the market competitiveness and possession, but also China's paste resin industry innovation and restructuring needs.In this thesis, the process parameters to optimize the device to determine the stability of the test conditions in small scale 30 L polymerization apparatus; Comparative study of the structural performance and processing application performance with similar foreign products; for users, study the effects of additives on product quality mixed after adding. Specific results are as follows:1?Determine the conditions:polymerization temperature 46?, homogenization speed 3000 rpm, homogenization time 20 min,Stirring speed of 35 rpm, the sodium lauryl sulfate accounted of 0.6%, the mixed alcohol accounted of the 1.0%. The particles are distributed in 1.0-2.0?m, closing to the 1.0?m. The proportion of 1.0-1.5?m particle size is about 50%, the proportion of 0.5-1.0?m particle size is about 25%, The proportions of particle size is very small about less than 0.5?m or greater than 2.0?m particle size.2?Comparing to the structural performance and processing application performance about the Japanese Kaneka PSH-31, Hanwha KH-31 G, Formosa PR-F, LG-170 G and the MP-1700 G of our company, it is no obviously differences with the similar foreign products, in the field of machining can be substituted.3?adding to the Viscosity agent in the process after the emulsion can reduce resin viscosity and improve stability plastisol,about POEM and OT, viscosity reduction is preferred POEM, 2h and 24 h, respectively viscosity reduction was 11.5% and 11.7%; adding to the defoaming agent 920 and 920 C, the 0920 C can improving sieving rate, 920 make resin viscosity rise phenomenon, two kind of antifoaming agent has a tendency to increase the thickening rate, still need further study; In order to solve the problem of yellow color gloves products, to join the PH regulator, At the same time without affecting emulsion stability and sieving time after alkaline, the impact on the thickening rate is not big.Through these research, the apply laws of special material resin MP-1700 G have been establishmented for guiding downstream users, and improving the overall technical level of the industry, It also can produce economic benefits and social benefits... |
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