本文研究了凝固剂的种类和浓度等因素对天然胶乳离子沉积过程的影响。就沉积能 力而言氯化钙>硝酸钙>醋酸钙>氯化钡>醋酸钡。其中以醋酸钡的凝胶及胶膜性能较好,其他几种凝固剂之间差异不大。钙盐对胶膜老化的影响大于钡盐,其中尤以氯化物为甚。 随着凝固剂浓度的增加橡胶沉积量、凝胶起始浓度及凝胶物理性能均增加。但当使用氯化钙时,在15％左右凝胶抗张力达到最大。 在沉积过程中凝胶浓度起始稍高,随后逐渐下降至一定程度后又缓慢上升,凝胶性能也有类似的变化。 沉积方法与凝固剂的附型剂对沉积过程有明显影响。 由以上结果:我们认为天然胶乳的离子沉积过程可以分成三个阶段:(a)凝结、(b)过渡、(c)胶凝。由以上试验数据证明了所提出的离子沉积动力方程式基本上是正确的。但整个离子沉积过程用q=q_0(kt)/(1+kt)来表示,可能要更好一些。 In this paper, the influence of coagulant type and concentration on the ion-deposition process of natural latex was studied. Calcium chloride> calcium nitrate> calcium acetate> barium chloride> barium acetate in terms of deposition capacity. Among them, barium acetate gel and film performance is good, the other few coagulant little difference between. The effect of calcium salt on the aging of the film is greater than the barium salt, especially chloride. As the coagulant concentration increased, the amount of rubber deposited, the initial gel concentration and the physical properties of the gel increased. However, when calcium chloride is used, gel tensile strength is maximized at about 15%. During the deposition process, the gel concentration started slightly higher, then gradually decreased to a certain extent and then slowly increased. The gel properties also had similar changes. Deposition methods and coagulant formulations have a significant impact on the deposition process. From the above results: We believe that the ion-deposition process of natural latex can be divided into three stages: (a) coagulation, (b) transition, (c) gelation. The above experimental data prove that the proposed ion deposition kinetic equation is basically correct. However, the entire ion deposition process with q = q_0 (kt) / (1 + kt) that may be better.