阅读说明：本技术 一种柔软耐高温不粘的人造革表面处理剂及制备方法 (Soft high-temperature-resistant non-sticky artificial leather surface treatment agent and preparation method thereof ) 是由 关仲翔 姚文佩 于 2019-09-19 设计创作，主要内容包括：一种柔软耐高温不粘的人造革表面处理剂及其制备方法,包括如下质量份数的原材料：环保型酯类溶剂10-50份、环保型醇醚类溶剂10-50份、酯溶性氯醋树脂5-30份、不溶性PVC微粉1-20份、内交联聚丙烯酸酯树脂5-20份、消光剂0-10份、分散剂0.3-5份；制备方法为：将环保型溶剂加入反应釜,再加入酯溶性三元共聚氯醋树脂,以环保型溶剂溶解氯醋树脂,得到氯醋树脂溶液,高速分散后以砂磨机研磨混合物,再加入内交联聚丙烯酸酯树脂和分散剂,分散均匀后过滤包装得到成品。本发明实现产品的柔软耐高温性能,增加产品附加值,手感提升,产生粉蜡状手感,采用环保型溶剂,更环保,降低对工作人员伤害。(The surface treating agent for the soft, high-temperature-resistant and non-sticky artificial leather comprises the following raw materials in parts by mass: 10-50 parts of environment-friendly ester solvent, 10-50 parts of environment-friendly alcohol ether solvent, 5-30 parts of ester-soluble vinyl chloride-vinyl acetate copolymer, 1-20 parts of insoluble PVC micro powder, 5-20 parts of internal cross-linked polyacrylate resin, 0-10 parts of flatting agent and 0.3-5 parts of dispersing agent; the preparation method comprises the following steps: adding an environment-friendly solvent into a reaction kettle, adding ester-soluble ternary copolymer vinyl chloride-vinyl acetate copolymer, dissolving the vinyl chloride-vinyl acetate copolymer by using the environment-friendly solvent to obtain a vinyl chloride-vinyl acetate copolymer solution, dispersing at a high speed, grinding the mixture by using a sand mill, adding an internal crosslinking polyacrylate resin and a dispersing agent, uniformly dispersing, filtering and packaging to obtain a finished product. The invention realizes the soft high temperature resistance of the product, increases the added value of the product, improves the hand feeling, generates the powder-like hand feeling, adopts the environment-friendly solvent, is more environment-friendly and reduces the harm to workers.)

1. The surface treating agent for the soft high-temperature-resistant non-sticky artificial leather is characterized by comprising the following raw materials in parts by mass: 10-50 parts of environment-friendly ester solvent, 10-50 parts of environment-friendly alcohol ether solvent, 5-30 parts of ester-soluble vinyl chloride-vinyl acetate copolymer, 1-20 parts of insoluble PVC micro powder, 5-20 parts of internal cross-linked polyacrylate resin, 1-10 parts of flatting agent and 0.3-5 parts of dispersing agent.

2. The surface treatment agent for artificial leather with softness, high temperature resistance and non-stickiness according to claim 1, wherein the environment-friendly ester solvent is 2 of dibasic ester DBE, acid ester strong solvent PCC or isobutyl isobutyrate IBIB.

3. The surface treatment agent for soft, high temperature resistant and non-sticky artificial leather according to claim 1, wherein the environment-friendly alcohol ether solvent is 1 or 2 of ethanol, isopropanol, propylene glycol methyl ether PM or propylene glycol methyl ether acid ester PMA.

4. The surface treatment agent for soft, high temperature resistant and non-sticky artificial leather of claim 1, wherein the ester-soluble vinyl chloride-acetate copolymer is 1 of hydroxyl modified ternary vinyl chloride-acetate copolymer TP-500A, ternary hydroxyl vinyl chloride-acetate copolymer T5HX or ternary vinyl chloride-acetate copolymer Solbin TA 3.

5. The surface treatment agent for soft, high-temperature-resistant and non-sticky artificial leather according to claim 1, wherein the insoluble PVC micro powder is 1 or 2 of anti-sticking and delustering coarse grain Vinnolit C100V, matte anti-sticking micro powder Vinnolit K221 or insoluble resin micro powder Vinnolit S100.

6. The surface treatment agent for soft, high temperature resistant and non-sticky artificial leather according to claim 1, wherein the internal cross-linked polyacrylate resin is DV 657.

7. The surface treatment agent for soft, high-temperature resistant and non-sticky artificial leather according to claim 1, wherein the matting agent is fumed silica.

8. The surface treatment agent for soft, high temperature resistant and non-sticky artificial leather according to claim 1, wherein the dispersing agent is Dispers 687.

9. A method for preparing the soft high temperature resistant non-stick artificial leather surface treatment agent according to any one of claims 1 to 8, which comprises the following steps:

s1: adding an environment-friendly ester solvent and an environment-friendly alcohol ether solvent into a reaction kettle, adding ester-soluble ternary copolymer vinyl chloride-acetate copolymer, and dissolving vinyl chloride-acetate copolymer with the environment-friendly ester solvent at 60-70 ℃ to obtain a vinyl chloride-acetate copolymer solution;

s2: adding 1 or 2 of PVC micropowder and fumed silica into the vinyl chloride-vinyl acetate copolymer solution, and dispersing at high speed;

s3: grinding the S2 mixture with a sand mill;

s4: adding the internal crosslinking polyacrylate resin and the dispersant, dispersing uniformly, filtering and packaging to obtain a finished product.

Technical Field

The invention relates to an artificial leather surface treating agent, in particular to an artificial leather surface treating agent with softness, high temperature resistance and non-stickiness and a preparation method thereof.

Background

At present, the manufacture and application of artificial leather synthetic leather in China account for more than 80% of the world, most of the artificial leather is polyvinyl chloride (PVC) artificial leather which has the characteristics of cold brittleness and hot adhesion, and the PVC artificial leather is precipitated by a plasticizer, so that the surface of the artificial leather is not high temperature resistant and is easy to stick, the artificial leather is generally subjected to coating treatment, and the coating material is called as a surface treating agent in the industry. The artificial leather treating agent is prepared by dissolving polyvinyl chloride resin, vinyl chloride-vinyl acetate resin, polyacrylate resin and the like in an organic solvent, and silicon dioxide matting powder is additionally added in a matting mode. The processing technology of the artificial leather surface treating agent comprises pretreatment and post-treatment, wherein generally, due to the temperature resistance problem, most of the pretreatment has poor treatment effect, so one or more post-treatment procedures are added; because the post-treatment temperature is low, the post-treated product has residual solvent and has large smell. Odor problems have also been the focus of customer complaints.

The pretreatment temperature is high, and because PVC artificial leather is not temperature-resistant, a low-temperature post-treatment process is generally adopted, and because the temperature is low and the solvent is not completely volatilized, most artificial leathers have bad smell. The odor can be reduced by adopting a pretreatment high-temperature process, but the haze, the processability and the hand feeling are not good, which is the same defect of the common surface treating agent, and the surface treating agent is soft, cannot resist high temperature and has sticky surface. This is a common problem in the industry.

In order to solve these problems, different methods are adopted, but most of them are matched with different TG (glass transition temperature) polymers, for example, CAB, PMMA and PVC/EVA blending copolymer are matched with each other, but the high TG polymer represents high hardness, conflicts with the soft characteristic of the artificial leather, and the common problems of cold brittleness and hot adhesion cannot be solved all the time.

The reason why the above problems cannot be solved is that the selected linear polymers all have a common disadvantage of being cold, brittle and hot. The problem can be solved to a certain extent by selecting the branched chain cross-linking substance, but the cross-linked polymer or the cross-linked polymer is not dissolved well, so that the branched chain cross-linking substance cannot be applied in practice; or two-component or multi-component curing is required, and the use is inconvenient due to the complex ingredients and the limited use time.

Disclosure of Invention

The invention aims to provide a soft high-temperature-resistant non-sticky artificial leather surface treating agent and a preparation method thereof, which realize the soft high-temperature-resistant performance of products, greatly reduce the smell of the products compared with the traditional products, increase the added value of the products, realize the self extinction of organic matters, improve the hand feeling and generate the powder wax hand feeling, adopt an environment-friendly ester solvent and an environment-friendly alcohol ether solvent, are more environment-friendly, reduce the harm to workers and solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the soft high-temperature-resistant non-sticky artificial leather surface treating agent comprises the following raw materials in parts by mass: 10-50 parts of environment-friendly ester solvent, 10-50 parts of environment-friendly alcohol ether solvent, 5-30 parts of ester-soluble vinyl chloride-vinyl acetate copolymer, 1-20 parts of insoluble PVC micro powder, 5-20 parts of internal cross-linked polyacrylate resin, 0-10 parts of flatting agent and 0.3-5 parts of dispersing agent.

Wherein, the environment-friendly ester solvent is 2 of dibasic ester DBE, acid ester strong solvent PCC or isobutyl isobutyrate IBIB. The environment-friendly alcohol ether solvent is 1 or 2 of ethanol, isopropanol, propylene glycol methyl ether PM or propylene glycol methyl ether acid ester PMA. The ester-soluble vinyl chloride-vinyl acetate copolymer resin is 1 of hydroxyl modified ternary vinyl chloride-vinyl acetate copolymer resin TP-500A, ternary hydroxyl vinyl chloride-vinyl acetate copolymer resin T5HX or ternary vinyl chloride-vinyl acetate copolymer resin Solbin TA 3. The insoluble PVC micro powder is 1 or 2 of anti-sticking and delustering coarse grain Vinnolit C100V, matte anti-sticking micro powder Vinnolit K221 or insoluble resin micro powder Vinnolit S100. The internal cross-linked polyacrylate resin is DV 657. The flatting agent is fumed silica. The dispersant is Dispers 687.

The invention also provides a preparation method of the soft high-temperature-resistant non-sticky artificial leather surface treating agent, which comprises the following steps:

s1: adding an environment-friendly ester solvent into a reaction kettle, adding ester-soluble ternary copolymer vinyl chloride-acetate copolymer, dissolving vinyl chloride-acetate copolymer at 60-70 ℃ by using the environment-friendly ester solvent, and diluting by using an environment-friendly alcohol ether solvent to obtain a vinyl chloride-acetate copolymer solution;

s2: adding 1 or 2 of PVC micropowder and fumed silica into the vinyl chloride-vinyl acetate copolymer solution, and dispersing at high speed;

s3: grinding the S2 mixture with a sand mill;

s4: adding the internal crosslinking polyacrylate resin and the dispersant, dispersing uniformly, filtering and packaging to obtain a finished product.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention uses environment-friendly solvent to dissolve vinyl chloride-vinyl acetate copolymer as film forming material and adhesion promoter, and adds internal crosslinking polyacrylate resin and ultra-high molecular weight PVC micropowder technology to obtain soft and non-sticky artificial leather surface treating agent, thus realizing the soft and high temperature resistance of the product.

2. Compared with the traditional product, the invention greatly reduces the smell of the product and increases the added value of the product.

3. The invention adopts the environment-friendly ester solvent and the environment-friendly alcohol ether solvent, can convert the traditional solvent containing non-environment-friendly aromatic hydrocarbons into the environment-friendly solvent or even an aqueous product, upgrades the product, meets the requirement of simplified process at one time, improves the product performance, is more environment-friendly and reduces the harm to workers.

4. The invention can realize self extinction of organic matters, improve hand feeling and generate powder wax hand feeling.

Detailed Description

The following examples will explain the present invention in detail, however, the present invention is not limited thereto. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The soft high-temperature-resistant non-sticky artificial leather surface treating agent comprises the following raw materials in parts by mass: 10-50 parts of environment-friendly ester solvent, 10-50 parts of environment-friendly alcohol ether solvent, 5-30 parts of ester-soluble vinyl chloride-vinyl acetate copolymer, 1-20 parts of insoluble PVC micro powder, 5-20 parts of internal cross-linked polyacrylate resin, 1-10 parts of flatting agent and 0.3-5 parts of dispersing agent. The preparation method comprises the following steps: adding an environment-friendly ester solvent and an environment-friendly alcohol ether solvent into a reaction kettle, adding ester-soluble ternary copolymer vinyl chloride-acetate copolymer, and dissolving vinyl chloride-acetate copolymer with the environment-friendly ester solvent at 60-70 ℃ to obtain a vinyl chloride-acetate copolymer solution; adding 1 or 2 of PVC micropowder and fumed silica into the vinyl chloride-vinyl acetate copolymer solution, and dispersing at high speed; grinding the high-speed dispersed mixture by a sand mill; adding the internal crosslinking polyacrylate resin and the dispersant, dispersing uniformly, filtering and packaging to obtain a finished product.