纸浆模塑包装制品的表观处理技术研究

发布时间：2018-05-13 20:37

本文选题：OCC废纸纤维 + 漂白　；参考：《江南大学》2014年硕士论文

【摘要】：近年来，为响应绿色环保理念，环保包装材料越来越受到社会和业界的重视。纸浆模塑作为一种新型环保材料近几年已经成为废纸的第三大消费行业，应用的领域也越来越广。纸浆模塑原料来源广泛、可回收再利用、易降解，是代替塑料的热门材料，但受原材料的影响，制品的外观颜色、表面平滑度等较差，限制了纸浆模塑的应用范围。改善纸浆模塑的外观性能，提高其在包装中的附加值已成为国内外研究的热点之一。本课题在国内外研究的基础上结合本实验室具体情况，以旧瓦楞箱板纸（OCC）废纸纤维为主要原料，通过漂白、染色、表面涂布等表观处理技术，改善了纸浆模塑的外观色泽、表面平滑度和掉屑情况，并研究了纸浆模塑处理前后的耐破度和环压强度等物理性能的变化。具体来说，主要的研究内容包括：（1）从本文主要研究原材料OCC纸浆的组成出发，根据纸浆特性，从化学机理的角度分析在纸浆漂白、染色和表面施胶过程中，化学试剂与纤维的相互作用，确定了后续试验化学试剂的选择范围和评价指标。（2）将微波加热用于双氧水一段漂白OCC纸浆，以纸浆亮度和残液化学需氧量为评价指标，通过正交试验确定了较优的工艺参数：碱比0.2，H2O2用量2%，微波功率300w，微波时间150s。为获得更高的纸浆亮度，采用H2O2/FAS/NaBH4三段漂白，研究了三段漂白的漂序对纸浆亮度的影响，试验结果表明：NaBH4/FAS/H2O2三段漂白漂后纸浆亮度达到了73.41，与一段漂白纸浆相比，纸浆亮度提高了11.8%；同时残液COD值与一段微波--H2O2漂白的COD值相近，三段漂白后的废水处理负担未有明显增加。（3）在微波-H2O2一段漂白基础上对纸浆进行染色，以上染率和耐湿色牢度为主要指标，纸浆亮度为辅助指标，通过L16（45）正交试验研究确定了直接翠兰GL对漂白纸浆染色的最佳工艺条件：染料用量1.6%，NaCl用量10%，染液PH值4，，染液温度60℃，染色时间30min；纸浆上染率达到了98.5%左右，直接耐晒翠兰GL上染纤维普遍具有较高的耐湿色牢度。（4）研究了PS-255表面施胶淀粉、KR-002表面干强剂、KR-230阳离子表面施胶剂和B-1表面增强剂四种表面施胶剂分别对纸浆模塑制品表面平滑度及掉屑的改善效果，在此基础上进行复配试验，结果表明：PS-255施胶淀粉对纸浆模塑制品表面平滑度的改善效果最好，KR-002表面干强剂对表面平滑度的改善效果一般，但对掉屑情况的改善效果最好，且热压整形后试样表面美观。将PS-255施胶淀粉和KR-002表面干强剂进行复配，确定了较优配方：m(PS-255):m(KR-002)为10:2，施胶物质浓度20%，涂膜厚度400μm。（5）研究了漂白、染色和表面施胶对纸浆模塑试样物理性能（耐破度和环压强度）的影响；制品经漂白和染色处理后物理性能变化不大，表面施胶则可在一定程度上提高其物理性能。研究结果说明，以OCC纸浆为原料制备的纸浆模塑制品经过漂白、染色和表面施胶处理，可有效改善制品的表观性能；制品在色泽、表面平滑度和防掉屑方面均达到较高水平，为其在中高档包装中的广泛应用提供可能。本论文的研究成果为纸浆模塑包装制品在表观处理方面的进一步研究提供了一定的理论基础和试验依据，具有较高的参考价值。
[Abstract]:In recent years , in order to respond to the concept of green environmental protection , the environmental protection packaging material has been paid more and more attention by the society and the industry . The paper pulp molding as a new kind of environmental protection material has become the third major consumption industry of waste paper in recent years , and the application range is more and more widely . The paper pulp molding raw material has wide sources , can be recycled and reused , is easy to degrade , is a hot material for replacing plastic , and limits the application range of pulp molding .

Based on the domestic and foreign research , based on the specific conditions of this lab , the paper improves the appearance color , surface smoothness and chip removal of pulp molding by using the surface treatment technology such as bleaching , dyeing , surface coating and so on , and studies the changes of the physical properties of pulp molding before and after the paper pulp molding . Specifically , the main research contents include :

( 1 ) Based on the composition of the raw material OCC pulp , the paper analyzes the interaction between chemical reagent and fiber during bleaching , dyeing and surface sizing of pulp according to the characteristics of pulp , and determines the selection range and evaluation index of the subsequent test chemical reagent .

( 2 ) The effect of bleaching sequence on the brightness of pulp was studied by orthogonal test . The results showed that the brightness of pulp reached 73.41 when the brightness of bleached pulp reached 73.41 , and the brightness of pulp increased by 11.8 % compared with the bleached pulp .
At the same time , the COD value of the residual liquid is similar to the COD value of a period of microwave - H2O2 bleaching , and the waste water treatment burden after the three - stage bleaching is not obviously increased .

( 3 ) dyeing the paper pulp on the basis of a bleaching of microwave - H2O2 , the dyeing rate and the wet fastness of the paper pulp are the main indexes , the brightness of the pulp is the auxiliary index , and the optimal technological conditions for dyeing the bleached pulp by the direct emerald GL are determined through the orthogonal test of L16 ( 45 ) : the dye consumption is 1.6 percent , the amount of NaCl is 10 percent , the pH value of the dye liquor is 4 , the dyeing liquid temperature is 60 DEG C , and the dyeing time is 30min ;
the dyeing rate of the paper pulp reaches about 98.5 % , and the dyeing fiber in the direct sunlight - resistant green - blue GL has higher wet fastness .

( 4 ) The surface smoothness of PS - 255 surface dry strength agent , KR - 002 surface dry strength agent , KR - 230 cationic surface sizing agent and B - 1 surface reinforcing agent were studied .

( 5 ) The effects of bleaching , dyeing and surface sizing on the physical properties ( fracture resistance and ring compressive strength ) of pulp molded specimens were studied .
The physical properties of the products after bleaching and dyeing are not large , and the physical properties of the products can be improved to a certain extent .

The results show that pulp molded products made from OCC pulp are bleached , dyed and subjected to surface sizing treatment , which can effectively improve the apparent performance of the products .
The results of this paper provide some theoretical basis and experimental basis for further study on the apparent treatment of pulp moulded packaging products , which has high reference value .

【学位授予单位】：江南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TS761;TB484

【参考文献】