摘要
分别研究了二磺液体荧光增白剂BA－L和六磺液体荧光增白剂HST在造纸应用中的添加工艺。研究表明，二磺液体荧光增白剂BA—L用于浆内增白时，其最佳浓度为0．6％质量分数（相对于纸浆干质量），最佳搅拌时间约为10min；以1％质量分数（相对于胶液总质量）的醚化淀粉配制成表面施胶液，加入10％（相对于醚化淀粉固含量）六磺液体荧光增白剂HST后，与原纸相比，白度增幅达到55％以上；涂料固含量30％，六磺液体荧光增白剂HST添加量为0．8％（相对于纸浆干质量），涂布后纸页CIE白度较空白样提高55．57％．且经UV照射进行白度耐久性测试．该用量下白度损失最小，仅为4．65％。
Application of liquid fluorescent whitening agents, BA-L of disulfonic type and HST of hexasulfonic type, in papermaking was studied. The research shows that optimum BA-L dosage is 0.6% （relative to pulp weight） and optimum stirring time is about 10 minutes when used in pulp internal whitening. With addition of 10% HST of hexasulfonic type liquid fluorescent whitening agent（relative to etherified starch solid content）, the surface sizing agent formulated by 1% etherified starch（relative to total sizing solution mass） increases whiteness by more than 55% when compared with base paper. When coat solid content is 30% and HST addition amount is 0.8% （relative to bone dry pulp weight）, CIE whiteness of coated paper increases by 55.57% over blank sample. And paper whiteness durability test by UV irradiation shows that whiteness loss is minimum, only 4.65%.
出处
《造纸化学品》
CAS
2013年第3期21-25,共5页
Paper Chemicals
