PET 聚酯树脂在中碱性造纸条件下应用于湿部

PET polyester resins used in the wet end at neutral-alkaline papermaking conditions

两种环保性和水分散性聚酯树脂与松香一起作为浆内施胶剂在中碱性条件下应用于 湿部。用两种不同的浆料进行实验。研究了两种或更多的化学品在加入浆或浆料之前 预混合对施胶效果的影响。结果表明，预混合工艺能提高聚酯树脂的施胶效率。另 外，还研究了预混合工艺的机理并且介绍了一种新的湿部工艺，这种工艺能提高纸张 的物理性能。

Two environmentally friendly, water-borne polyesters were used with rosin as internal sizes at the wet end in neutral-alkaline papermaking conditions. Two different furnishes were tested. We studied the effects of mixing two or more chemicals together before adding them to pulp or stock. The results show that the premixing process improved the polyester sizing efficiency. We also investigated the mechanism of the premixing process and describe a new wet-end process that shows improved physical properties.