News Details

Leather coating crosslinking agent

2017-4-3 15:38:53

Leather coating crosslinking agent, the application experiment: (1) no added crosslinking agent of water-borne leather finishing agent; (2) added 1% crosslinking agent of water-borne leather finishing agent; (3) adding 1.5% crosslinking agent of A water-based leather finishing agent.

Selected water-based coating and drying: will the leather finishing agent by its craft standard coating respectively in the 3 piece of leather on 5 cm x 15 cm, then dry dry conditions and time as stipulated in the product standard.

Selected water-based coating and drying: will the caigang paint spray respectively by its craft standard in 3 pieces of 10 c: m x 15 cm on tin plate, and then press drying drying conditions prescribed by the product standard and time.

Test method: test of steel plate surface with dry cloth to wipe clean. Take a piece of white 30 cm * 30 cm thick cotton cloth folded 2 times to form a four layer thickness of cushion, dip it into the butanone out after 5 ~ 10 s.

Test method: processing felt and leather is as follows: the first will be felt in deionized water, slowly heated to boiling, make felt saturated, hot water out, add cold deionized water, until the wet felt at room temperature, remove felt from the water before use, to suck with filter paper

Appropriate protection of the index finger in the center of the pads, and the remains of the same hand fingers and thumb take extra part, to 45. Contact surface under test, with moderate pressure friction rectangular surface under test, and forward to at a time

Postscript to 1 times friction back and forth, back and forth for about 1 per second rate of friction, the friction in the process of keeping humidity pads. The end friction material show or complete 100 times back and forth, if the former, when substrate show, record the number of friction, check the tested area and coarse cotton stick coating.

Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).

Felt on the surface of the water; Immersed leather sample in deionized water, release the container vacuum drier, vacuum to 5 kpa, keep 2 arin, and then return to normal pressure,

Repeat the process above 2 times, remove the sample from the water before use, the water on the surface of the leather with filter paper. To fix after air conditioning of specimen on the test bench, and along the direction of friction stretch 10%. Load weight, make the total mass of the test head to 1000 g. Fix will have prepared test felt pad on the test, the test head contact with the leather sample level, friction times to 200 times.

Remove the specimen and felt pads, drying at room temperature before evaluation. Then observe leather color change and the contamination situation of mat mat, record the change of the sample surface any visible, changes such as gloss, downy or coating after 100 times back and forth friction coating has no effect.

Leather is the hair removal and tanning and other physical, chemical processing of animal skins have been modified non-perishable. Leather is made of natural protein fiber in the three-dimensional space of tightly woven, its surface has a special grain layer, has the natural grain and gloss, feel comfortable.

The type of leather is different, its characters and use are different. Such as cow leather fine, high strength, the most appropriate production leather shoes; Sheep leather light, thin, soft, is the ideal of leather clothing fabrics; Pig leather good air permeability, water vapor permeability performance. Pig leather, leather on the surface of the round, bulky pore, a tilt into leather. The arrangement of pores for a set of three root, leather surface rendering many small triangular pattern.