A kind of preparation method of polylactic acid gel toughened sponge

A technology of polylactic acid and polyurethane sponge, which is applied in the field of fabric accessories, can solve the problems of high cost and large usage of sponge, and achieve the effect of improving hydrophilicity, increasing hydrophilic groups, and improving rebound rate

Active Publication Date: 2018-07-27
江阴市长泾花园毛纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of the above-mentioned modified sponge is relatively high, and as a fabric auxiliary material, the sponge used in the air layer fabric is mostly a conventional polyurethane sponge, and its usage is large.

Method used

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  • A kind of preparation method of polylactic acid gel toughened sponge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the polylactic acid gel toughened sponge of embodiment 1 comprises steps:

[0026] S1: Put the polyurethane sponge in the alkali pretreatment solution for immersion treatment, heat up the pretreatment for 2 hours, wash with water, dry, place the polyurethane sponge in low-temperature oxygen for plasma treatment, apply a voltage discharge frequency of 13.75MHz, and a power of 100W. The processing time is 20s;

[0027] S2: Configure polylactic acid finishing solution. The main components of polylactic acid finishing solution are ethylenediamine-modified polylactic acid, ethyl lactate and carbodiimide. The weight percentage of ethylenediamine-modified polylactic acid in the polylactic acid finishing solution is 3%, the weight ratio of carbodiimide to ethylenediamine-modified polylactic acid is 0.03:1;

[0028] S3: Soak the polyurethane sponge in the polylactic acid finishing solution for at least two padding treatments, remove the excess solution...

Embodiment 2

[0032] Embodiment 2 is based on embodiment 1, difference is:

[0033] S1: Put the polyurethane sponge in the alkali pretreatment solution for immersion treatment, heat up the pretreatment for 5 hours, wash it with water, dry it, put the polyurethane sponge in low-temperature oxygen for plasma treatment, apply a voltage discharge frequency of 13.75MHz, and a power of 150W. The processing time is 50s;

[0034] S2: Configure polylactic acid finishing solution. The main components of polylactic acid finishing solution are ethylenediamine-modified polylactic acid, ethyl lactate and carbodiimide. The weight percentage of ethylenediamine-modified polylactic acid in the polylactic acid finishing solution is 7%, the weight ratio of carbodiimide to ethylenediamine-modified polylactic acid is 0.1:1;

[0035] S3: Soak the polyurethane sponge in the polylactic acid finishing solution for at least two padding treatments, roll off the excess solution, raise the temperature of the sponge to ...

Embodiment 3

[0039] Embodiment 3 is based on embodiment 2, difference is:

[0040] S1: Put the polyurethane sponge in the alkali pretreatment solution for immersion treatment, heat up the pretreatment for 3.5 hours, wash it with water, dry it, put the polyurethane sponge in low-temperature oxygen for plasma treatment, and apply a voltage discharge frequency of 13.75MHz and a power of 125W , the processing time is 35s;

[0041] S2: Configure polylactic acid finishing solution. The main components of polylactic acid finishing solution are ethylenediamine-modified polylactic acid, ethyl lactate and carbodiimide. The weight percentage of ethylenediamine-modified polylactic acid in the polylactic acid finishing solution is 5%, the weight ratio of carbodiimide to ethylenediamine-modified polylactic acid is 0.065:1;

[0042] S3: Soak the polyurethane sponge in the polylactic acid finishing solution for at least two padding treatments, roll off the excess solution, raise the temperature of the sp...

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Abstract

The invention discloses a preparation method of polylactic-acid-gel-toughened sponge, which comprises the steps of polyurethane sponge pretreatment, preparation of a polylactic acid finishing solution, finishing, cleaning and drying, and the like. The polyurethane sponge piece is subjected to pretreatment and plasma treatment to destroy the microscopic surface of the polyurethane sponge network, and carboxyl and other oxygen-containing active groups are grafted on the surface; the groups react with the amino group on the ethylenediamine-modified polylactic acid macromolecule surface to implement crosslinking; drying is carried out to obtain a polylactic acid film on the polyurethane sponge sheet network structure surface; and the film is beneficial to increasing the rebound rate of the pressed polyurethane sponge. Compared with the untreated polyurethane sponge, the quantity of the hydrophilic groups on the sponge network surface is increased, and the hydrophilicity of the sponge is enhanced. The sponge prepared by the method has certain antibacterial property and flame retardancy.

Description

technical field [0001] The invention relates to the technical field of fabric accessories, in particular to a preparation method of a polylactic acid gel toughened sponge. Background technique [0002] At present, the air layer fabrics on the market mainly include the following three types: one is a kind of textile accessories. The pure cotton fabric is soaked in a chemical solution. After soaking, the surface of the fabric is covered with countless extremely fine hairs. Form an extremely thin air layer on the surface of the fabric; the second is to sew two different fabrics together, and the gap in the middle may be filled with elastic curly fibers; the third is to combine the upper and lower surfaces of the sponge sheet with wool, cashmere, cotton, silk, etc. Quality, chemical fiber fabrics, etc. are bonded by adhesives. Because the porous sponge has good water absorption and light weight, it can have the same or similar warmth retention effect as the above two fabrics. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C08J9/40C08J9/36C08J3/24C08L67/04C08L71/02C08K5/00C08K5/07C08K5/55C08K5/29C08K5/101C08K5/11C08L75/04
CPCC08J3/246C08J9/36C08J9/405C08J9/42C08J2375/04C08J2467/04C08K5/07C08K5/101C08K5/11C08K5/29C08K5/55C08K2201/014C08L67/04C08L2201/02C08L2201/08C08L2312/00C08L71/02C08K5/00
Inventor 赵军伟林红
Owner 江阴市长泾花园毛纺织有限公司
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