| In this study, under the guide of green chemical, researched and developed environment-friendly and non-poisoned vegetable oil esters, and applicatied of it in substituting for Phthalate Plasticizers restricted increasing as PVC plasticizersIn this line of thought, this paper developed the research of the process of epoxy on fatty acid methylester by solid acid (ion exchange resins) as catalyst,obtained the epoxy fatty acid methyl ester; taked the advantage of the reaction between epoxy fatty acid methyl ester and glycol catalyzed by NaOH in the oil bath or PEG400 in microwave without catalyst,prepared the epoxy fatty acid glycol ester and epoxy fatty acid PEG400 ester;compared with the semi-rigid PVC products (25 phr) plasticited by DOP, preliminary studied the replacing application of fatty acid methylester, epoxy fatty acid methylester, epoxy fatty acid glycol ester, epoxy fatty acid PEG400 ester plasticited PVC in different dosage, researched the alternative feasibility of epoxy fatty acid ester replacing DOP as plasticizer.First, establish solid acid as the catalyst in epoxy reaction system, and through the inspection on the amount of catalyst and orthogonal experiment, the results shows the best experimental conditions of the synthesis of epoxy fatty acid methyl ester: fatty acid methylester, the amount of formic acid, 18.67 g; the amount of hydrogen peroxide, 88.34 g, the amount of catalyst:2.5%, the temperature:62℃, and the holding time for 2 h;Secondly, taked the use of fatty acid methyl ester and glycol or PEG400 in oil bath pot and microwave, characterized and confirmed the physical and chemical properties of the product of epoxy fatty acid glycol ester and epoxy fatty acid PEG400 este,Third, respectively used fatty acid methylester, epoxy fatty acid methylester, epoxy fatty acid glycol ester, epoxy fatty acid PEG400 ester replacing DOP plasticited PVC, characterized the producted by mechanical properties, rheological properties, elicit resistance, volatile resistance , hardness testing and Congo Red experiment, to test the alternative feasibility of the product replacing DOP as plasticizer in the semi-rigid PVC formulations.The results show that: the mechanical properties and process properties of epoxy fatty acids esters replacing alternative DOP plasticized PVC products can meet the requirements of process of the PVC.Suitable amount of altemativ can enhance the toughness and thermal stability of PVC products, and the elicit resistance lower than DOP out of the overall, but some resistance properties of epoxy fatty acid glycol ester and epoxy fatty acid PEG400 ester is nearly next to DOP.In view of no toxic potential of vegetable oil-based plasticizer, the use of epoxy fatty acid ester plasticizers substitute for DOP plasticized PVC has certain advantages on cost and environmental. These experimental data obtained provided technical support for plant-based epoxy fatty acid esters plasticizers substituting DOP plasticited PVC in the actual production.
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