阅读说明：本技术 一种高耐磨pvc人造革后处理方法及pvc人造革 (High-wear-resistance PVC artificial leather post-treatment method and PVC artificial leather ) 是由 匡建武 张术根 王元鑫 丁磊 黄俊斌 蒋晓兵 林铭晖 于 2020-11-19 设计创作，主要内容包括：本发明涉及一种高耐磨PVC人造革后处理方法及PVC人造革,所述后处理方法在PVC人造革材料加工定型后使用,所述PVC人造革通过所述后处理方法对PVC人造革材料进行处理得到。本发明中的后处理方法,应用的主要原料包括:水性消光聚碳PU、增光聚碳PU、流平剂、消泡剂、异氰酸酯交联剂、水性自消光聚碳树脂、碳化二亚胺类交联剂、有机硅耐磨助剂、有机硅消音助剂,操作简单,适用于工业批量生产。本发明中的PVC人造革相对现有PVC人造革材料,具有耐磨性高、并且硬度和耐寒性受耐磨性提高的影响较小的优点。(The invention relates to a post-treatment method of high-wear-resistance PVC artificial leather and PVC artificial leather. The post-treatment method disclosed by the invention has the main raw materials comprising the water-based extinction polycarbon PU, the brightening polycarbon PU, the flatting agent, the defoaming agent, the isocyanate crosslinking agent, the water-based self-extinction polycarbon resin, the carbodiimide crosslinking agent, the organic silicon wear-resistant auxiliary agent and the organic silicon noise reduction auxiliary agent, is simple to operate and is suitable for industrial batch production. Compared with the existing PVC artificial leather material, the PVC artificial leather has the advantages of high wear resistance, and small influence of the improvement of the wear resistance on the hardness and the cold resistance.)

1. The post-treatment method of the high-wear-resistance PVC artificial leather is characterized by comprising the following steps of:

A. surface treatment: coating a first treating agent on the surface layer of the PVC artificial leather material to form a first treating layer; the first treating agent comprises the following components in parts by weight: 70-80 parts of water-based matt carbon PU, 20-30 parts of brightening carbon PU, 0.8-1 part of flatting agent, 0.2-0.3 part of defoaming agent and 4-6 parts of isocyanate crosslinking agent;

B. drying: drying the PVC artificial material leather obtained after the treatment in the step A;

C. surface treatment: coating a second treating agent on the surface of the dried first treating layer to form a second treating layer; the second treating agent comprises the following components in parts by weight: 30-40 parts of brightening polycarbon PU, 0.8-1 part of a flatting agent, 0.2-0.3 part of a defoaming agent, 5-8 parts of an isocyanate crosslinking agent, 60-70 parts of a water-based self-extinction polycarbon resin, 6-8 parts of a carbodiimide crosslinking agent and 5-6 parts of an organic silicon wear-resistant auxiliary agent; D. drying: c, drying the PVC artificial leather material obtained after the treatment in the step C;

E. surface treatment: coating a third treating agent on the surface of the dried second treating layer to form a third treating layer; the third treating agent comprises the following components in parts by weight: 10-15 parts of brightening polycarbon PU, 0.8-1 part of flatting agent, 0.2-0.3 part of defoaming agent, 4-6 parts of isocyanate crosslinking agent, 85-90 parts of water-based self-extinction polycarbon resin, 6-8 parts of carbodiimide crosslinking agent, 5-6 parts of organic silicon wear-resistant additive and 5-6 parts of organic silicon silencing additive

F. Drying: and E, drying the PVC artificial leather material obtained after the treatment in the step E.

2. The post-treatment method of highly abrasion-resistant PVC artificial leather according to claim 1, characterized in that: the organic silicon noise reduction additive is prepared from HM-13-678 and deionized water in the same weight part.

3. The post-treatment method of highly abrasion-resistant PVC artificial leather according to claim 1, characterized in that: the waterborne self-extinction polycarbonate resin is characterized in that the waterborne self-extinction polycarbonate PU is WF-78-486, the brightening polycarbonate PU is RU-13-442, the flatting agent is LA-91-120, the defoaming agent is DF-2459, the isocyanate crosslinking agent is XR-78-017, the waterborne self-extinction polycarbonate resin is WF-3649, the carbodiimide crosslinking agent is XR-5580, and the organosilicon wear-resistant auxiliary agent is HM-54-002.

4. The post-treatment method of highly abrasion-resistant PVC artificial leather according to claim 1, characterized in that: the drying temperature in the step B is 90-110 ℃; the drying temperature in the step D is 125-135 ℃; and F, drying at 105-115 ℃.

5. A PVC synthetic leather is characterized in that: the PVC artificial leather is obtained by post-treating according to the post-treatment method of any one of claims 1 to 4.

Technical Field

The invention relates to the field of PVC artificial leather, in particular to a high-wear-resistance PVC artificial leather post-treatment method and PVC artificial leather.

Background

Nowadays, the automobile industry develops at a high speed, and the development of the automobile interior decoration industry is followed, and the requirements of consumers on the performance of the automobile interior decoration, especially the wear resistance, are higher and higher, but the common PVC commonly used for the automobile interior decoration at present cannot meet the requirements of people. The wear resistance of PVC is not only required to be changed by considering the wear resistance, but also combined with other performance considerations, such as improving the hardness of PVC singly, the wear resistance is definitely good, but the texture of PVC is reduced, and meanwhile, the improvement of the hardness can cause the flexibility of PVC to be poor at low temperature, and the PVC is easy to crack when used under the low temperature condition, so that a new PVC formula is needed, and the wear resistance is improved, and the original flexibility and cold resistance are maintained.

Disclosure of Invention

The invention aims to provide a post-treatment method of high-wear-resistance PVC artificial leather and the PVC artificial leather.

In order to achieve the purpose, the invention adopts the technical scheme that:

the invention provides a post-treatment method of high-wear-resistance PVC artificial leather, which comprises the following specific steps:

A. surface treatment: coating a first treating agent on the surface layer of the PVC artificial leather material to form a first treating layer; specifically, the first treating agent comprises the following components in parts by weight: 70-80 parts of water-based matt carbon PU, 20-30 parts of brightening carbon PU, 0.8-1 part of flatting agent, 0.2-0.3 part of defoaming agent and 4-6 parts of isocyanate crosslinking agent;

B. drying: drying the PVC artificial material leather obtained after the treatment in the step A;

C. surface treatment: coating a second treating agent on the surface of the dried first treating layer to form a second treating layer; specifically, the second treating agent comprises the following components in parts by weight: 30-40 parts of brightening polycarbon PU, 0.8-1 part of a flatting agent, 0.2-0.3 part of a defoaming agent, 5-8 parts of an isocyanate crosslinking agent, 60-70 parts of a water-based self-extinction polycarbon resin, 6-8 parts of a carbodiimide crosslinking agent and 5-6 parts of an organic silicon wear-resistant auxiliary agent;

D. drying: c, drying the PVC artificial leather material obtained after the treatment in the step C;

E. surface treatment: coating a third treating agent on the surface of the dried second treating layer to form a third treating layer; specifically, the third treating agent comprises the following components in parts by weight: 10-15 parts of brightening polycarbon PU, 0.8-1 part of a flatting agent, 0.2-0.3 part of a defoaming agent, 4-6 parts of an isocyanate crosslinking agent, 85-90 parts of a water-based self-extinction polycarbon resin, 6-8 parts of a carbodiimide crosslinking agent, 5-6 parts of an organic silicon wear-resistant assistant and 5-6 parts of an organic silicon silencing assistant;

F. drying: and E, drying the PVC artificial leather material obtained after the treatment in the step E.

Furthermore, the organosilicon silencing additive is prepared from HM-13-678 and deionized water in the same weight part.

Further, the water-based extinction polycarbon PU is WF-78-486, the brightening polycarbon PU is RU-13-442, the flatting agent is LA-91-120, the defoaming agent is DF-2459, the isocyanate crosslinking agent is XR-78-017, the water-based self-extinction polycarbon resin is WF-3649, the carbodiimide crosslinking agent is XR-5580, and the organosilicon wear-resistant auxiliary agent is HM-54-002.

Further, the drying temperature in the step B is 90-110 ℃; the drying temperature in the step D is 125-135 ℃; and F, drying at 105-115 ℃.

The polishing polycarbon PU used by the treating agent is used for increasing the hardness of the PVC artificial leather material so as to improve the wear resistance of the PVC artificial leather material. Meanwhile, an isocyanate crosslinking agent and a carbodiimide crosslinking agent are added into the treating agent, so that the problems of high film-forming hardness of PVC artificial leather and easiness in cracking at low temperature caused by the hardness increase of the PVC artificial leather due to the addition of the brightening polycarbon PU are solved.

After being processed and shaped, the general PVC artificial leather material comprises a surface layer, a foaming layer and a base fabric layer, and the treatment steps of the post-treatment method are all carried out on the surface layer.

On the basis, the invention also provides PVC artificial leather, and the PVC artificial leather is obtained by carrying out post-treatment on the PVC artificial leather material by using the post-treatment method.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the invention not only greatly improves the wear resistance of the PVC artificial leather, but also solves the problems of high film-forming hardness of the PVC artificial leather caused by the improvement of the wear resistance, and easy cracking caused by the reduction of the flexibility resistance of the PVC artificial leather at low temperature after the hardness is increased.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment provides a post-treatment method of high-wear-resistance PVC artificial leather, which comprises the following specific steps:

A. surface treatment: coating a first treating agent on the surface layer of the PVC artificial leather material to form a first treating layer; specifically, the first treating agent comprises the following components in parts by weight: 70 parts of water-based matt polycarbonate PU, 30 parts of brightening polycarbonate PU, 1 part of flatting agent, 0.3 part of defoaming agent and 5 parts of isocyanate crosslinking agent;

B. drying: drying the PVC artificial material leather obtained after the treatment in the step A at the drying temperature of 100 ℃;

C. surface treatment: coating a second treating agent on the surface of the dried first treating layer to form a second treating layer; specifically, the second treating agent comprises the following components in parts by weight: 40 parts of brightening polycarbon PU, 1 part of a flatting agent, 0.3 part of a defoaming agent, 5 parts of an isocyanate crosslinking agent, 60 parts of water-based self-extinction polycarbon resin, 8 parts of a carbodiimide crosslinking agent and 6 parts of an organic silicon wear-resistant assistant;

D. drying: c, drying the PVC artificial leather material obtained after the treatment in the step C, wherein the drying temperature is 130 ℃;

E. surface treatment: coating a third treating agent on the surface of the dried second treating layer to form a third treating layer; specifically, the third treating agent comprises the following components in parts by weight: 15 parts of brightening polycarbon PU, 1 part of a flatting agent, 0.3 part of a defoaming agent, 5 parts of an isocyanate crosslinking agent, 85 parts of water-based self-extinction polycarbon resin, 8 parts of a carbodiimide crosslinking agent, 6 parts of an organic silicon wear-resistant assistant and 6 parts of an organic silicon noise-reduction assistant;

F. drying: and E, drying the PVC artificial leather material obtained after the treatment in the step E, wherein the drying temperature is 110 ℃.

In a more preferred embodiment, the silicone sound damping aid is prepared from 6 parts HM-13-678 and 6 parts deionized water, by weight.

In a more preferable embodiment, the waterborne matt carbon PU is WF-78-486, the brightening carbon PU is RU-13-442, the flatting agent is LA-91-120, the defoaming agent is DF-2459, the isocyanate crosslinking agent is XR-78-017, the waterborne self-matt carbon resin is WF-3649, the carbodiimide crosslinking agent is XR-5580, and the organosilicon wear-resistant auxiliary agent is HM-54-002.

The invention has the beneficial effects that: 1. the wear resistance of the PVC artificial leather is improved; 2. the problems that the hardness of the PVC artificial leather is high due to the improvement of the wear resistance, and the flexibility resistance is reduced at low temperature after the hardness of the PVC artificial leather is increased are solved.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.