CN106592254A - Outdoor waterproof antibacterial superfine fiber synthetic leather and finishing method thereof - Google Patents

Abstract

The invention discloses outdoor waterproof antibacterial superfine fiber synthetic leather and a finishing method thereof, wherein a preparation method of the synthetic leather comprises the following steps: (1) immersing superfine fiber synthetic leather in a treatment liquid, and padding, wherein the liquid carrying rate of the superfine fiber synthetic leather is 50%-70%, and the treatment liquid comprises the following components in parts by weight: 7-10 parts of a C6 waterproof finishing agent, 3-7 parts of a water-based antibacterial agent, 1-3 parts of a water-based crosslinking agent, and 100 parts of deionized water, wherein the pH is 4-6; (2) drying the product of the step (1), cooling and coiling; and (3) roll-coating the front face and the reverse face of the superfine fiber synthetic leather of the step (2) with an oily antibacterial agent, drying, cooling and coiling, and thus obtaining the externally-applied waterproof antibacterial superfine fiber synthetic leather. The superfine fiber synthetic leather produced by the method has stable waterproof antibacterial quality, and overcomes the defect that the waterproof property and the antibacterial property cannot reach the standards at the same time; and the product has good breathability and moisture permeability and strong scratch resistance, and is suitable for outdoor protective shoes and protective gloves.

Description

Waterproof and antibacterial superfine fiber synthetic leather for outdoor use and finishing method thereof

technical field

The invention relates to a finishing method for suede superfine fiber synthetic leather.

Background technique

In recent years, suede microfiber synthetic leather has become more and more popular among consumers and has become the mainstream product of microfiber synthetic leather. At the same time, functional microfiber leather has gradually entered the stage and occupied a place in the market. As people pursue outdoor activities, the requirements for outdoor protective equipment are getting higher and higher, especially protective shoes and protective gloves, which are required to have functions such as waterproof, breathable, antibacterial, wear-resistant, and scratch-resistant. Existing waterproof microfiber leather and antibacterial microfiber leather have been widely popular in the market, but the waterproof and antibacterial microfiber leather technology for outdoor use is not stable.

Initially, the post-finishing technology of co-bathing with C8 waterproofing agent and antibacterial agent can meet the requirements, but C8 contains harmful substances such as PFOA and PFOS, which does not conform to the concept of environmental protection of consumers, so C8 products are gradually replaced by C6 which does not contain PFOA and PFOS. product instead.

However, it has been proved that the finishing technology after co-bathing with C6 waterproofing agent and antibacterial agent is not stable, and there are large differences in the waterproof and antibacterial effects of different batches of products.

Contents of the invention

The object of the present invention is to provide a kind of waterproof and antibacterial microfiber synthetic leather for outdoor use and its finishing method, to overcome the defects existing in the prior art.

The method of the present invention comprises the steps of:

(1) immerse the superfine fiber synthetic leather in the treatment solution for padding, after padding, the liquid-carrying rate of the microfiber leather is 50% to 70%;

The treatment liquid includes the following components in parts by weight:

pH is 4~6;

The preparation method is as follows:

Mixing C6 waterproof finishing agent, water-based antibacterial agent, water-based crosslinking agent and water, and then adjusting the pH of the mixed solution with acetic acid to obtain the treatment solution;

Preferably, immerse the superfine fiber synthetic leather in the treatment liquid, and after 4 dips and 4 rolling, control the liquid-carrying rate of the microfiber leather to 55% to 65%, and control the vehicle speed to 5 to 8m/min;

(2) The product of step (1) is then dried at 130-160° C. for 5-15 minutes, then cooled and rolled.

(3) Apply the microfiber leather of step (2) on a three-plate printing machine to roller-coat the oily antibacterial agent. The front and back sides of the microfiber leather are each coated once. The amount of roller coating is required to be 2-10g/m ² . Drying at ℃, and finally cooling and winding;

The cooling, winding and other processes are known methods, which can be found in the literature: Qu Jianbo. Synthetic Leather Materials and Technology [M]. Beijing: Chemical Industry Press, 2015. The method recorded.

The C6 waterproof finishing agent is a perfluorohexane sulfonyl compound or sulfonate, such as one of AFH6 from Rudolph, Teflon SLA from Dupont, TG-5671 from Daikin, or a mixture of any proportion in aqueous solution ;

The water-based antibacterial agent is a silver ion-type inorganic compound, such as one of Rudolph antibacterial agent AGP, Huntsman antibacterial agent HeiQPure TF, Dow antibacterial agent ET or a mixture aqueous solution in any proportion;

The water-based crosslinking agent is an aromatic sealing polyisocyanate, such as FU of Rihua Company or a water-dispersible isocyanate crosslinking agent EC-600 of Shanghai Sisheng polymer material or a mixture of two;

The oil-based antibacterial agent is a macromolecular organic antibacterial agent, such as one or a mixture of ATE 9280 from Herst in Germany and SKANEòM-8 from Dow Chemical.

The agent of the present invention is combined with an organic-inorganic composite antibacterial agent, and the product not only has the high efficiency and durability of an organic antibacterial agent but also has the safety and heat resistance of an inorganic antibacterial agent; the C6 waterproofing agent is used, which is environmentally friendly and has good waterproof performance.

The resulting microfiber leather can achieve the following effects:

Water absorption rate ≤ 30%, water penetration ≤ 0.2g, water vapor penetration ≥ 5mg/cm ² h (test standard ISO20345); at the same time, the anti-Klebsiella pneumoniae effect can reach more than 90% (test standard ATCC 4352), the anti-Staphylococcus aureus effect can reach more than 90% (test standard ATCC 6538).

The microfiber leather produced by the method has stable quality, overcomes the defects that waterproof and antibacterial cannot meet the standards at the same time, and the product has good air permeability, water vapor permeability and strong scratch resistance, and is very suitable for outdoor protective shoes and protective gloves.

detailed description

The present invention will be further described in detail through specific embodiments below, but the present invention is not limited to these examples.

Example 1

(1) Padding finishing agent: impregnate the microfiber suede leather in the finishing agent, 4 dips and 4 pads, with a liquid retention rate of 55%, drying at 130°C for 10 minutes, then cooling and winding.

The finishing agent is composed of the following components in parts by weight:

Adjust the pH to 4.5 with acetic acid

(2) Printing antibacterial agent: apply oily antibacterial agent ATE 9280 on the front and back of the microfiber leather,

The amount of roller coating is 2g/m ² , then dried at 120°C, and finally cooled and rolled.

The microfiber leather obtained by this process can achieve the following effects:

The water absorption rate is 5.2%, the water penetration rate is 0.02g, and the water vapor penetration rate is 10mg/cm ² h (test standard ISO 20345); at the same time, the resistance to Klebsiella pneumoniae is 95%, (test standard ATCC 4352), and the resistance to Staphylococcus aureus is 93% (test standard ATCC 6538).

Example 2

(1) Padding finishing agent: impregnate the microfiber suede leather in the finishing agent, 4 dips and 4 pads, with a liquid retention rate of 60%, drying at 135°C for 12 minutes, then cooling and winding.

The finishing agent is composed of the following components in parts by weight:

Adjust the pH to 5 with acetic acid

(2) Printing antibacterial agent: apply oily antibacterial agent ATE 9280 on the front and back of the microfiber leather once, with a roller coating amount of 7g/m ² , then dry at 120°C, and finally cool and wind up.

The microfiber leather obtained by this process can achieve the following effects:

The water absorption rate is 9.9%, the water penetration rate is 0.15g, and the water vapor penetration rate is 13mg/cm ² h (test standard ISO 20345); at the same time, the anti-Klebsiella pneumoniae is 92% (test standard ATCC 4352), and the anti-gold Staphylococcus aureus is 94% (test standard ATCC 6538).

Example 3

(1) Padding finishing agent: impregnate the microfiber suede leather in the finishing agent, 4 dips and 4 pads, with a liquid retention rate of 60%, drying at 135°C for 10 minutes, then cooling and winding.

The finishing agent is composed of the following components in parts by weight:

Adjust the pH to 5 with acetic acid

(2) Printing antibacterial agent: apply oil-based antibacterial agent SKANEòM-8 on the front and back of the microfiber leather once, with a roller coating amount of 10g/m ² , then dry at 120°C, and finally cool and wind up.

The microfiber leather obtained by this process can achieve the following effects:

The water absorption rate is 4.3%, the water penetration rate is 0.02g, and the water vapor penetration rate is 11mg/cm ² h (test standard ISO 20345); at the same time, the anti-Klebsiella pneumoniae is 91% (test standard ATCC 4352), and the anti-gold Staphylococcus aureus is 92% (test standard ATCC 6538).

Example 4

(1) Padding finishing agent: impregnate the microfiber suede leather in the finishing agent, 4 dips and 4 pads, with a liquid retention rate of 65%, drying at 140°C for 8 minutes, then cooling and winding.

The finishing agent is composed of the following components in parts by weight:

Adjust the pH to 5.5 with acetic acid

(2) Printing antibacterial agent: apply oil-based antibacterial agent SKANEòM-8 on the front and back of the microfiber leather once, with a roller coating amount of 5g/m ² , then dry at 120°C, and finally cool and wind up.

The microfiber leather obtained by this process can achieve the following effects:

The water absorption rate is 3.3%, the water penetration rate is 0.08g, and the water vapor penetration rate is 8.5mg/cm ² h (test standard ISO20345); the resistance to Klebsiella pneumoniae is 92% (test standard ATCC 4352), and the resistance to grape aureus Coccus is 95% (test standard ATCC 6538).

Claims (9)

1. outdoor water-proof antibiotic superfine fiber chemical leather method for sorting, it is characterised in that comprise the steps：

(1) superfine fiber chemical leather is immersed and is padded in treatment fluid, the liquid carrying rate of super fiber leather is 50%～70%；

Described treatment fluid includes the component of following parts by weight：

PH is 4～6；

(2) and then by the product of step (1) dry, then cooling, winding；

(3) by the positive and negative of the super fiber leather of step (2), roller coat oiliness antibacterial, drying, cooling, winding are outer that is, described in acquisition Use water-proof antibiotic superfine fiber chemical leather.

2. method according to claim 1, it is characterised in that the C6 water-proof aagents are perfluor hexane sulfonyl compound Or sulfonate.

3. method according to claim 1, it is characterised in that the waterborne antibacterial agent is silver ion type inorganic composite.

4. method according to claim 1, it is characterised in that the water cross-linking agent is aromatic series closed type polyisocyanate Ester.

5. method according to claim 1, it is characterised in that the oiliness antibacterial is macromolecule organic antibacterial agent.

6. method according to claim 1, it is characterised in that superfine fiber chemical leather is immersed in treatment fluid, through 4 leachings 4 roll, and the liquid carrying rate for controlling super fiber leather is 55%～65%, and regulation speed is 5～8m/min.

7. method according to claim 1, it is characterised in that in step (3), by the positive and negative of the super fiber leather of step (2), Roller coat oiliness antibacterial, roller coat amount is 2-10g/m², then dry at 120 DEG C.

8. the outdoor water-proof antibiotic superfine fiber chemical leather for being prepared according to any one of claim 1～7 method.

9. outdoor water-proof antibiotic superfine fiber chemical leather according to claim 8, it is characterised in that water absorbance≤ 30%, penetration by water amount≤0.2g, vapor permeation amount >=5mg/cm²H (testing standard ISO 20345)；Meanwhile, anti-K The effect of pneumobacilluses can reach more than 90% (testing standard ATCC 4352), and the effect of anti-Staphylococcus aureus can reach More than 90% (testing standard ATCC 6538).