Leather tanning agent is a very important chemical materials in footwear. Have neutral buffer effect, apply various face neutralization, useful fiber maintenance, avoid and excessive cause loose surface; Alone or with sodium formate, carbon ammonia, baking soda and other mixed use; Can also cooperate with other retanning material utilization, make retanning agent even soaked; Have levelling effect, without losing color.
Leather tanning agent and gentle; Not only light resistance, good heat resistance; And other tanning agent can soak; Suitable for low aldehyde environmental goods.
Leather tanning agent and cushion, and apply various face, useful fiber maintenance, avoid and excessive cause loose surface; Alone or with sodium formate, carbon ammonia, baking soda and other mixed use; Can also cooperate with other retanning material utilization, make retanning agent even soaked; Color has a leveling effect, and won’t defeat; General usage: 1-2%.
Because as a tanning materials tanning agent types of heavy and complicated and the diversity of the tanning method, more add the complexity of its mechanism for discussion. But whatever the material leather, tanning agent and tanning method to differ, for tanning effect occurs, there is a fundamental evaluation.
Such as: (1) adding fiber porous structure;
(2) the progress of collagen fiber wet and heat resistant function;
(3) the progress of collagen resistance to chemical action and the effect of microorganism and enzyme;
(4) to cut the collagen fiber bundle, fiber, the adhesivity between fibril;
(5) cut of wet leather squeeze deformation;
(6) when dry wet leather cuts shorten degree;
(7) the neat degree of collagen fibers and fine structure is put;
(8) changes the appearance of the granule surface.
When judging a processing method is attributed to tanning or to evaluate some leather tanning tanning effect, not one-sided discrimination on the basis of the above a certain characteristics, and a variety of characteristics should be summarized to appraisal is reasonable.