阅读说明：本技术 一种环保型抗刮纸张涂料及其制备方法 (Environment-friendly scratch-resistant paper coating and preparation method thereof ) 是由 温国明 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种环保型抗刮纸张涂料,包括以下重量份的原料：环氧树脂、去离子水、石墨烯粉末、分散液、流平剂、无水乙醇溶剂、阴离子型丙烯酸乳液、消泡剂、固化剂、聚苯胺、成膜助剂、异辛酯、增稠剂和硅烷偶联剂；其制备方法包括以下步骤：S1、制备混合液；S2、加入佐剂；S3、微磨处理；S4、储存；制得的环保型抗刮纸张涂料涂抹于纸张上,能够在不影响纸张使用柔软度的同时有效增强其表面硬度,使得纸张具有抗刮耐磨的效果,且整个制备过程使用的助剂以及生产出来的新型触感涂料均为环保类材料,不对环境以及人体造成危害。(The invention discloses an environment-friendly scratch-resistant paper coating which comprises the following raw materials in parts by weight: epoxy resin, deionized water, graphene powder, dispersion liquid, a flatting agent, an absolute ethyl alcohol solvent, an anionic acrylic emulsion, a defoaming agent, a curing agent, polyaniline, a film-forming assistant, isooctyl ester, a thickening agent and a silane coupling agent; the preparation method comprises the following steps: s1, preparing a mixed solution; s2, adding an adjuvant; s3, micro-grinding; s4, storing; the environment-friendly scratch-resistant paper coating is smeared on paper, the surface hardness of the paper can be effectively enhanced while the softness of the paper is not influenced, so that the paper has scratch-resistant and wear-resistant effects, and the auxiliary used in the whole preparation process and the produced novel touch coating are environment-friendly materials and do not cause harm to the environment and human bodies.)

1. The environment-friendly scratch-resistant paper coating is characterized by comprising the following raw materials in parts by weight: 90-100 parts of epoxy resin, 15-20 parts of deionized water, 15-17 parts of graphene powder, 10-20 parts of dispersion liquid, 3-5 parts of a leveling agent, 35-40 parts of an absolute ethyl alcohol solvent, 20-25 parts of an anionic acrylic emulsion, 16-18 parts of a defoaming agent, 8-16 parts of a curing agent, 20-36 parts of polyaniline, 10-30 parts of a film-forming assistant, 12-15 parts of isooctyl ester, 5-8 parts of a thickening agent and 15-20 parts of a silane coupling agent.

2. The environment-friendly scratch-resistant paper coating as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 90 parts of epoxy resin, 15 parts of deionized water, 15 parts of graphene powder, 10 parts of dispersion liquid, 3 parts of a flatting agent, 35 parts of an absolute ethyl alcohol solvent, 20 parts of an anionic acrylic emulsion, 16 parts of a defoaming agent, 8 parts of a curing agent, 20 parts of polyaniline, 10 parts of a film-forming assistant, 12 parts of isooctyl ester, 5 parts of a thickening agent and 15 parts of a silane coupling agent.

3. The environment-friendly scratch-resistant paper coating as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 95 parts of epoxy resin, 17 parts of deionized water, 16 parts of graphene powder, 15 parts of dispersion liquid, 4 parts of a leveling agent, 37 parts of an absolute ethyl alcohol solvent, 23 parts of an anionic acrylic emulsion, 17 parts of a defoaming agent, 11 parts of a curing agent, 31 parts of polyaniline, 20 parts of a film-forming assistant, 13 parts of isooctyl ester, 6 parts of a thickening agent and 17 parts of a silane coupling agent.

4. The environment-friendly scratch-resistant paper coating as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 100 parts of epoxy resin, 20 parts of deionized water, 17 parts of graphene powder, 20 parts of dispersion liquid, 5 parts of a flatting agent, 40 parts of an absolute ethyl alcohol solvent, 25 parts of an anionic acrylic emulsion, 18 parts of a defoaming agent, 16 parts of a curing agent, 36 parts of polyaniline, 30 parts of a film-forming assistant, 15 parts of isooctyl ester, 8 parts of a thickening agent and 20 parts of a silane coupling agent.

5. The environment-friendly scratch-resistant paper coating as claimed in claim 1, wherein the epoxy resin is a generic name of a polymer containing more than two epoxy groups in a molecule; it is a polycondensation product of epichlorohydrin and bisphenol A or polyhydric alcohol; because of the chemical activity of the epoxy group, the epoxy group can be opened by a plurality of compounds containing active hydrogen, and the epoxy group is cured and crosslinked to form a network structure, so that the epoxy group is a thermosetting resin.

6. the environmentally friendly scratch-resistant paper coating of claim 1 wherein the silane coupling agent has the general molecular formula Y-R-Si (OR)3 (wherein Y is an organofunctional group, SiOR-siloxy); the silicon alkoxy group has reactivity to inorganic matters, and the organic functional group has reactivity or compatibility to organic matters; thus, when a silane coupling agent intervenes between the inorganic and organic interfaces, a bonding layer of organic matrix-silane coupling agent-inorganic matrix may be formed.

7. A method for preparing an environment-friendly scratch-resistant paper coating, which is used for preparing the environment-friendly scratch-resistant paper coating as claimed in any one of claims 1 to 6, and is characterized by comprising the following steps:

S1, preparing a mixed solution: putting epoxy resin, deionized water, graphene powder, polyaniline and isooctyl ester with the same components into a vacuum stirring dissolver, and uniformly stirring and dissolving in vacuum to form a mixed solution;

S2, adding an adjuvant: respectively adding the dispersion liquid, the flatting agent, the absolute ethyl alcohol solvent, the anionic acrylic emulsion, the defoaming agent, the curing agent, the film-forming assistant, the thickening agent and the silane coupling agent which are equal in amount into the mixed liquid formed in the step S1, then putting the mixed liquid into a vacuum spiral stirring and differentiating machine, and carrying out high-speed stirring and differentiation for 30-50 minutes to form uniformly mixed slurry;

S3, micro-grinding, namely sucking the uniformly mixed slurry formed in the step S2 into a micro-sand grinder through a vacuum extractor, and micro-grinding until the fineness is less than or equal to 15 micrometers to obtain the environment-friendly scratch-resistant paper coating;

S4, storage: and (4) respectively pouring the environment-friendly scratch-resistant paper coating formed in the step (S3) into storage tanks for storage at normal temperature.

8. The method for preparing the environment-friendly scratch-resistant paper coating according to claim 7, wherein the stirring speed of a vacuum stirring dissolver in S1 is 600 r/min.

9. The method for preparing the environment-friendly scratch-resistant paper coating according to claim 8, wherein the vacuum stirring dissolver is cleaned before operation.

Technical Field

The invention relates to the field of papermaking, in particular to an environment-friendly scratch-resistant paper coating and a preparation method thereof.

Background

The paper is made of plant fiber and can be used for writing, painting, printing books and newspapers, packaging and the like. Paper: the generic term of paper. Paper is counted by sheet and is called. The paper is generally divided into: relief printing paper, newsprint paper, offset printing paper, coated paper, book cover paper, dictionary paper, copy paper, board paper, etc.; the traditional paper has simple use structure and components, poor durability and practical use effect, for example, the scratch and wear resistance is poor, the traditional paper is easy to break and damage in use, the waterproof and breathable effect of the traditional paper needs to be improved, and the protection effect on an isolated object needs to be enhanced.

Disclosure of Invention

The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.

An environment-friendly scratch-resistant paper coating comprises the following raw materials in parts by weight: 90-100 parts of epoxy resin, 15-20 parts of deionized water, 15-17 parts of graphene powder, 10-20 parts of dispersion liquid, 3-5 parts of a leveling agent, 35-40 parts of an absolute ethyl alcohol solvent, 20-25 parts of an anionic acrylic emulsion, 16-18 parts of a defoaming agent, 8-16 parts of a curing agent, 20-36 parts of polyaniline, 10-30 parts of a film-forming assistant, 12-15 parts of isooctyl ester, 5-8 parts of a thickening agent and 15-20 parts of a silane coupling agent.

A preparation method of an environment-friendly scratch-resistant paper coating is used for preparing the environment-friendly scratch-resistant paper coating and comprises the following steps:

s1, preparing a mixed solution: putting epoxy resin, deionized water, graphene powder, polyaniline and isooctyl ester with the same components into a vacuum stirring dissolver, and uniformly stirring and dissolving in vacuum to form a mixed solution;

s2, adding an adjuvant: respectively adding the dispersion liquid, the flatting agent, the absolute ethyl alcohol solvent, the anionic acrylic emulsion, the defoaming agent, the curing agent, the film-forming assistant, the thickening agent and the silane coupling agent which are equal in amount into the mixed liquid formed in the step S1, then putting the mixed liquid into a vacuum spiral stirring and differentiating machine, and carrying out high-speed stirring and differentiation for 30-50 minutes to form uniformly mixed slurry;

s3, micro-grinding, namely sucking the uniformly mixed slurry formed in the step S2 into a micro-sand grinder through a vacuum extractor, and micro-grinding until the fineness is less than or equal to 15 micrometers to obtain the environment-friendly scratch-resistant paper coating;

S4, storage: and (4) respectively pouring the environment-friendly scratch-resistant paper coating formed in the step (S3) into storage tanks for storage at normal temperature.

as a further scheme of the invention: the epoxy resin is a general name of a polymer containing more than two epoxy groups in a molecule; it is a polycondensation product of epichlorohydrin and bisphenol A or polyhydric alcohol; because of the chemical activity of the epoxy group, the epoxy group can be opened by a plurality of compounds containing active hydrogen, and the epoxy group is cured and crosslinked to form a network structure, so that the epoxy group is a thermosetting resin.

As a further scheme of the invention: the silane coupling agent generally has a molecular formula of Y-R-Si (OR)3 (wherein Y is an organic functional group, SiOR is a siloxy group). The silicon alkoxy group has reactivity to inorganic matters, and the organic functional group has reactivity or compatibility to organic matters; thus, when a silane coupling agent intervenes between the inorganic and organic interfaces, a bonding layer of organic matrix-silane coupling agent-inorganic matrix may be formed.

As a further scheme of the invention: the stirring speed of the vacuum stirring dissolver in S1 is 600 r/min.

As a further scheme of the invention: the vacuum stirring dissolver needs to be cleaned before working.

compared with the prior art, the invention has the beneficial effects that: the environment-friendly scratch-resistant paper coating is smeared on paper, the surface hardness of the paper can be effectively enhanced while the softness of the paper is not influenced, so that the paper has scratch-resistant and wear-resistant effects, and the auxiliary used in the whole preparation process and the produced novel touch coating are environment-friendly materials and do not cause harm to the environment and human bodies.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.