As to the protective colloid using PVA or polyvinyl formal with the same concentration (7%), when the solid content of white glue enhanced 1%, the adhesive strength of PVAc would increase 0.27MPa and 0.33MPa respectively.

• 分别以相同浓度(7%25)聚乙烯醇、聚乙烯醇缩甲醛为保护胶体，制得的白乳胶的固含量(即聚醋酸乙烯醋含量)每提高1%25，粘接强度分别提高为0.；27Mpa、0