Study On Synthesis And Application Of Proof-Oil And Proof-Water Self-Fixed Neutral Sizing Agents

It has been a trend to protect our environment by using paper product. Since the paper is unresisted to all kinds of liquid. We have to use many chemical materials to get the effect of proof-oil and proof-water, which are imported from abroad with high price. So my subject was be focused on a new kind of sizing agents, which will be based on domestic chemical materials.This paper describes a study about the synthesis of self-fixed sizing agent and gives a detailed example about this kind of proof-oil and proof-water sizing agent's practical operation. The study focuses on the condition of emulsion polymerization and the proportions of monomer, which can make the product, not only have a nice waterproof and oilproof attribute but also have a better stability of emulsion. At the same time we try to find a better way to use this agents.The results of this research are shown as following: (1)Through the single condition test, we felt that the emulsion system is asuitable initiator for such a reaction by using AES:0P-10 (in proportion to 1:1)and NH4S2O4. (2)Through orthogonality experiments, the optimized condition in synthesizingsizing as follows: the proportion in reaction monomer between F and M-F is40:60, the total quantity using AES and OP-10 as emulsion is 2%, NH4S2O4as initiator is 2% ; temperature is 70 C. From the measurement polymer molecular weight and its molecular distribution of sizing agent with GPC methods, conclusions can be drawn as followed : the molecular weight of fluorocarbon compound is moderate, molecular weight distribute regular. All of those increase its adsorption in fibre. Then , it will have prefect performance of sizing. Analyzing particle situation and dimension of the synthesizing emulsion with TEM and LS methods. We would know that emulsion be of good distribution capacity, particle size be of uniform distribution, Which can indicate that emulsion be of fine stability. Analyzing the polymer structure' s feature with IR and NMR for the composition of fluorocarbon compound, the charts indicate that the adsorption peak of two co-polymer monomer appearing in the spectrum. In other words, co-polymer monomer connected with fluorocarbon compound each other.The experiments of X- Diffraction indicate that fine degree of crystalline density will promote the proof-oil and proof-water capability. The optimized condition for the sizing processing as follow: the quantity of sizing agent is 10%, beating degree is 28癝R, pH 6.0, quantity of APAM is 0.1%. The heating conditions of sizing agent is heat preservation 12 minute at 120C.