| In this paper, the modification ways of epoxy resin adhesive in glassy waterproof abrasive paper have studied. Epoxy resin adhesive has many good properties: high shear strength, small shrinkage, solvent resistance, resistance of alkali and so on. But epoxy adhesive often has low clarity, bad water resistence, bad coating technique, difficulty of mixing because of using low-molecular weight PA or polyethylene polyamine as curing agent. Then the abrasive paper has bad abrasive properties. Now the modification ways of epoxy resin are studied in this paper to improve abrasive properties, clarity, water resistance and to make mixing process easy.There are two ways which are used in this paper to modify epoxy adhesive together. At first, acrylic resin is composed ?Poly(MMA/BA/MAA). Because -COOH group in Poly(MMA/BA/MAA) can react with epoxy group in epoxy resin, epoxy resin can be cured and modified by Poly(MMA/BA/MAA). During this period, it is studied that synthetic reaction speed and conversion change with monomer concentration, monomer proportion, initiator, solvent selection, temperature.It is found that MAA can effect the intermiscibility of copolymer and solvent. When MAA content is more than 1:7(MAA: MMA+BA =1:7), copolymer became to separate from the solution and the solution became cloudy because of polymer polarity increasing. Synthetic reaction speed increases with initiator content and monomer content. From the experiment we have get the conclusion: "the best content is: initiator 1.5% and monomer 45%. There are four different solvents which are used to find the suitable intermiscibility and volatility on copolymer. Finally toluene and xylene mixture is the best.Infra-red absorption spectroscope is used to study copolymer's structure, thermal instrument to study copolymer's thermal properties, and measure the sample's shear strength. In the experiment, it is found that shear strength curve go up with MMA content increasing when using iron sample, and shear strength curve go up at first and then go down at MAA proportion of 3:5(MMA: BA) when using aluminium sample. It is MAA content of 1:8 that shear strength has the biggest value. The essential reason of this phenomenon is that copolymer and sample have different polarity when MAA content have changed. From TG curve of EP/Poly(MMA/BA/MAA) and EP we have found that the epoxy resin adhesive modified with copolymer have improved its temperature of decomposition of 15?At second, nm-SiO surface is modified by supersonic wave to separate nm-SiOj accumulation and coupling agent to keep separation. In this process, the relationship between shear strength and nm-SiCh proportion, coupling agent proportion is studied, including the abrasive paper's abrasive property and TG curve of EP/Poly(MMA/BA/MAA)/nm-SiO2 adhesive .There are two curves of shear strength which one uses coupling agent KH-550 and the other does not use. The curve which use coupling agent has increased much higher than the curve which not use coupling agent. Then the effect of stability on nm-SiO surface treatment is studied. It can be seen that coupling agent KH-550 is benefit for stability of nm-SiO and coupling agent have the best concentration because of the curve having the biggest value of shear strength.When effect of shear strength on nm-SiO2 content is studied, it is found that the curve also have got a biggest pot. So the conclusion is: when coupling agent content is 2% or 4% and nm-SiO content is 3% the shear strength curve has the biggest value, when coupling agent content is 6%or 8% and nm-SiO content is 5% the shear strength curve has the biggest value.In order to study this phenomenon, a theory fomula is used to calculate the value of KH-550/nm-SiO. It is 70.5.It is much bigger than factual value. So it can be said that nm-SiOj is separated in small accumulate which is not same as the structure of not having surface treatment.The abrasive weight experiment shows that the paper has improved its abrasive property with using EP/Poly(MMA/BA/MAA) or EP/Poly(MMA/BA/MAA)/n...
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