Superfine fiber polyurethane leather and base cloth as well as preparation method and application

A technology of ultra-fine fiber and polyurethane, applied in the direction of fiber processing, conjugated synthetic polymer artificial filament, non-woven fabric, etc.

Inactive Publication Date: 2010-12-29
HUAFON MICROFIBER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Due to the above unresolved technical problems, there is no report ...

Method used

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  • Superfine fiber polyurethane leather and base cloth as well as preparation method and application
  • Superfine fiber polyurethane leather and base cloth as well as preparation method and application
  • Superfine fiber polyurethane leather and base cloth as well as preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 The preparation of superfine fiber synthetic leather base cloth

[0052] Prepare the superfine fiber polyurethane synthetic leather base cloth according to the following steps successively: spinning, preparing non-woven fabric, ironing non-woven fabric (density is 0.28g / cm 3 ), impregnating the non-woven fabric in the polyurethane slurry, solidifying it in a DMF aqueous solution coagulation tank with a mass percent concentration of 40%, and then performing toluene decrementing, spreading, drying, oiling and tanning successively to obtain superfine fibers Polyurethane synthetic leather base fabric sample 1.

[0053] Wherein, the operation of spinning step is the nylon 6: low-density polyethylene (LDPE): FR-535 flame retardant color masterbatch (Japanese big printing ink chemical company) that the mass fraction ratio is=50: 50: 10, mix fully Finally, it is sent to the single-screw extruder for melt spinning, and after the first drawing and the second drawing...

Embodiment 2

[0057] Embodiment 2 Preparation of superfine fiber synthetic leather base cloth

[0058] The operation process is the same as in Example 1, but the polyurethane slurry is prepared according to the formula in Table 2 in the dipping step to obtain the superfine fiber polyurethane synthetic leather base cloth sample 2.

[0059] Table 2

[0060]

Embodiment 3

[0062] The operation process is the same as in Example 1, but the polyurethane slurry is prepared according to the formula in Table 3 in the dipping step to obtain the microfiber polyurethane synthetic leather base cloth sample 3.

[0063] table 3

[0064]

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Abstract

The invention discloses a preparation method of a superfine fiber polyurethane leather base cloth based on a conventional process, and in the step of spinning, FR-535 flame retardant nylon master batches are added to perform fire retardant treatment on superfine fibers. The invention also discloses the superfine fiber polyurethane leather base cloth prepared by the method, a preparation method of superfine fiber polyurethane leather, the superfine fiber polyurethane leather prepared by the method and an application of the method in preparing leather for automobile trim. The method in the invention can enable the superfine fiber polyurethane leather base cloth and the synthetic leather to have excellent flame retardant property with the horizontal burning time of 3min and damaged length of no more than 81mm. In addition, the superfine fiber synthetic leather has excellent combination property, such as light resistance, favorable fastness, high wear resistance and the like, delicate color, has the physical properties capable of comparing favorably with natural cow leather, and can satisfy the requirement of leather in automobile trim.

Description

technical field [0001] The invention relates to a superfine fiber polyurethane synthetic leather and its base cloth, as well as a preparation method and application. Background technique [0002] Microfiber polyurethane synthetic leather is a new type of high-grade artificial leather developed in recent years, which is composed of microfiber and polyurethane. Among them, the superfine fibers are three-dimensionally cross-linked together to play the role of skeleton and support, forming a structure similar to the collagen fibers of the dermis. Polyurethane is distributed around the fibers, which makes the entire synthetic leather base fabric form a whole. [0003] Ultrafine fiber polyurethane synthetic leather is usually made by the following method: the ultrafine fiber is mechanically processed into a nonwoven fabric with a three-dimensional network, and then impregnated with polyurethane slurry with an open cell structure, and then processed through a series of complicated ...

Claims

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Application Information

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IPC IPC(8): D06N7/06D06N3/14D04H1/00D01F1/07D01F8/06D01F8/12D01F8/14D06M15/564D06M13/165D06M11/47D06M13/07D06M11/69D06M11/82D06M13/156
Inventor 邬花元孙向浩王克亮叶芬弟刘勇胜刘立强
Owner HUAFON MICROFIBER SHANGHAI
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