Lab Report Acid Dyeing of Nylon

MATS-22012 PRODUCT PERFORMANCE AND EVALUATION B (COLOUR) |
Laboratory Report 1Dyeing Nylon with Acid Dyes |

Introduction…………………………………………………………………………………..…1Research…………………………………………………………………………………………..1       Types of Nylon…………………………………………………………............1 |
        Properties of Nylon………………………………………………………………2 |
            Absorption to acid dyes…………………………………………………………2
    Experimental………………………………………………………………………………………2
            Aims and Projects………………………………………………………………….2
Apparatus……………………………………………………………………………..3
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Calculation (Recipe 5)……………………………………………………………3
Method………………………………………………………………………………..4
    Results and Conclusion……………………………………………………………………...4
    References…………………………………………………………………………………………4
Product and Performance and Evaluation B (Colour) Laboratory 1
Acid Dyeing of Knitted Nylon Sample
1. Introduction:
Nylon, one kind of man-made fibre containing –CO-NH-, is a commonly-used polymer, created by the group led by W H Carothers. It is a symbol of the textile industry coming into another era. The two most common type of nylon is nylon 6 and nylon 6.6.

Acid dyeing is a way of dyeing fabric in the acidic dye bath. In this laboratory, the PH is about 5.5. Base on dyeing characteristics, Acid dyes are divided into 4 types according to the dyeing characteristics: (1) Levelling Acid Dyes (2) Fast Acid Dyes (3) Milling Acid Dyes (4) Super milling Acid dyes. Because of having amino groups in molecular main chain, it can be dyed with all kinds of acid dyes by combining dyes with amino groups through electrostatic reaction.

In this laboratory session, the purpose is to introduce how to dye Nylon fabrics with acid dyeing in five different recipes.

2. Research: The absorption of different types of Nylons to acid dyes
I Types of nylon:

Nylon Fibres is formed from long-chained polyamides. So the number of carbon atoms in each unit of monomer or co-monomer is used to divide different types of nylon fibres. According to the...