Study On The Production, Performance And Application Of Polyglycerol Fatty Acid Ester

For succeed in obtaining the anti-fogging agent of green-house film for agriculture with fine synthetically property, for reducing the cost and improving the property of anti-fogging agent, the paper, studying on the application, compounded a kind of non-ionic surface active agent, that is polymerization fatty acid ester(PGFE),by the methods of polymerization and esterify.And make the anti-fogging film with fine anti-fogging property by spraying the PGFE on plastics film with self-made adhesive.Firstly,the PGFE with different polymeric levels were compounded,and the relation between the anti-fogging property and the three kind of indexes was found by determining hydroxyl value, sour value and ester value. The purpose is of compounding fine property anti-fogging agent by controlling hydroxyl value, sour value and ester value.A kind of inside spraying anti-fogging agent is compounded in this paper. It is sprayed the inside surface of losing efficacy plastic film. The plastic film has anti-fogging property again and it is reused. The cost is decreased. Besides, this paper's method of inside spraying is differentiating from the others two methods of inside adding and outside spraying. The latter two methods are used to manufacture end product of anti-fogging plastic film in the facory.The paper's method of inside spraying can be used in the green-house film for agriculture directly, including the inside surface of losing efficacy plastic film and no anti-fogging PE film. It makes them having anti-fogging property and fairly good lasting property. The best solvent and adhesive are used for lasting property. And the anti-fogging film is made by spraying the anti-fogging agent on the plastic film's surface.The PGFE has low produce cost as the anti-fogging agent in the paper. The test proves that PGFE is a kind of anti-fogging agent with better efficacy. There is not documentary that making the PGFE as anti-fogging agent.The main property indexes of polyglycerol fatty acid ester (PGFE) are hydroxyl value, sour value and ester value, and they have influences for anti-fogging property of anti-fogging film. The polymerization degree of polyglycerol is different ; the anti-fogging property of PGFE is different. In this paper, the PGFE with different polymeric levels were compounded, and were found the influences for anti-fogging property. The influences of hydroxyl value, sour value and ester value of PGFE were found, and the direction to compound the fine anti-fogging agent is obtained.