阅读说明：本技术 高白度的纤维处理方法以及纤维增白组合物 (Method for treating high-whiteness fibers and fiber whitening composition ) 是由 关泽殷 于 2019-02-20 设计创作，主要内容包括：本发明涉及一种高白度的纤维处理方法以及纤维增白组合物。该纤维处理方法包括如下步骤：获取纤维浆；于所述纤维浆中加入钛白粉、紫色粉和蓝色粉,搅拌,得混合浆；于所述混合浆中加入固色剂,搅拌,即可。该纤维处理方法能够有效提高纤维的白度,且避免了致癌物质的使用,回水可直接排放,绿色环保。(The present invention relates to a method for treating a fiber with high whiteness and a fiber whitening composition. The fiber treatment method comprises the following steps: obtaining fiber pulp; adding titanium dioxide, purple powder and blue powder into the fiber slurry, and stirring to obtain mixed slurry; and adding a color fixing agent into the mixed slurry, and stirring. The fiber treatment method can effectively improve the whiteness of the fiber, avoids the use of carcinogenic substances, can directly discharge return water, and is green and environment-friendly.)

1. A method for treating high-whiteness fibers is characterized by comprising the following steps:

obtaining fiber pulp;

adding titanium dioxide, purple powder and blue powder into the fiber slurry, and stirring to obtain mixed slurry;

and adding a color fixing agent into the mixed slurry, and stirring.

2. The method of treating high brightness fibers according to claim 1, wherein the fixing agent is: dicyandiamide-formaldehyde resin water-soluble primary condensate.

3. The method for treating high-whiteness fiber according to claim 1, wherein the amount of the titanium dioxide is 0.1 to 0.5 wt%, the amount of the violet toner is 0.0016 to 0.002 wt%, and the amount of the blue toner is 0.0013 to 0.0017 wt%, based on the weight of the fiber pulp.

4. The method of claim 1, wherein the fixing agent is used in an amount of 1 to 3% by weight based on the weight of the fiber slurry.

5. A method for treating high-whiteness fiber according to any one of claims 1 to 4, wherein the fiber pulp has a fiber whiteness of 78 or more and a mass concentration of 5 to 10%.

6. The method for treating high-whiteness fiber according to any one of claims 1 to 4, wherein the purple powder is added after being diluted with water at a temperature of 78 ℃ or higher; and/or diluting the blue powder with water with the temperature of more than or equal to 78 ℃ and then adding the diluted blue powder.

7. The fiber whitening composition is characterized by comprising the following raw material components in parts by weight:

8. the fiber whitening composition of claim 7, wherein the fixing agent is a dicyandiamide formaldehyde resin water-soluble primary condensate.

9. Use of a fiber whitening composition according to claim 7 or 8 in the treatment of fibers.

10. Use according to claim 9, characterized in that the fiber whitening composition is used in the fiber treatment of the paper and plastic industry.

Technical Field

The invention relates to the technical field of papermaking, in particular to a high-whiteness fiber treatment method and a fiber whitening composition.

Background

In the paper and plastic industry, when white products are produced, fibers are generally required to be processed into white pulp. The production of white pulp is generally carried out by purchasing bleached fiber board, mechanically breaking it, adding clean water to obtain a certain concentration of fiber pulp (containing fibers).

However, at present, bleached wood fibers, bamboo fibers, sugarcane fibers and the like generally have whiteness of 78-81 degrees, most bleached materials are imported from foreign countries, the manufacturing time is long, the transportation time is long, the bleached materials are easy to yellow, and the whiteness of fiber pulp needs to be further improved.

The existing method usually adopts a method of adding a whitening agent or a fluorescer to improve the whiteness of the fiber pulp, but the whitening agent or the fluorescer is mostly carcinogenic and harmful to human bodies, the produced return water can pollute the environment, the produced return water needs to be specially recycled to carry out sewage treatment to separate the fluorescer, and the like, and the method does not meet the requirements of environmental protection.

Disclosure of Invention

Based on this, it is necessary to provide a fiber treatment method with high whiteness. The fiber treatment method can effectively improve the whiteness of the fiber, avoids the use of carcinogenic substances, can directly discharge return water, and is green and environment-friendly.

A method of treating high whiteness fibers comprising the steps of:

obtaining fiber pulp;

adding titanium dioxide, purple powder and blue powder into the fiber slurry, and stirring to obtain mixed slurry;

and adding a color fixing agent into the mixed slurry, and stirring.

In one embodiment, the fixing agent is dicyandiamide formaldehyde resin water-soluble primary condensate.

In one embodiment, the weight percentage of the titanium dioxide is 0.1-0.5%, the weight percentage of the purple powder is 0.0016-0.002%, and the weight percentage of the blue powder is 0.0013-0.0017%.

In one embodiment, the dye fixing agent is used in an amount of 1-3 wt% of the fiber pulp.

In one embodiment, the whiteness of the fibers in the fiber pulp is more than or equal to 78, and the mass concentration is 5-10%.

In one embodiment, the purple powder is added after being diluted by water with the temperature of more than or equal to 78 ℃; and/or diluting the blue powder with water with the temperature of more than or equal to 78 ℃ and then adding the diluted blue powder.

The invention also provides a fiber whitening composition which comprises the following raw material components in parts by weight:

0.1 to 0.5 portion of titanium dioxide

0.0016 to 0.002 part of purple toner

0.0013 to 0.0017 part of blue powder

And 1-3 parts of a color fixing agent.

In one embodiment, the fixing agent is dicyandiamide formaldehyde resin water-soluble primary condensate.

The invention also provides the application of the fiber whitening composition in fiber treatment.

In one embodiment, the fiber whitening composition is used in fiber treatment in the paper and plastic industry.

The principle and advantages of the invention are as follows:

the fiber treatment method of the invention innovatively uses purple powder and blue powder to cooperate with titanium dioxide to enter fiber pulp, the fiber pulp deflects reddish light and enhances brightness through the purple powder, and the blue powder can cover up the yellowish color of the fiber and can synthesize a bluish-white effect with the yellowish color, so that the fiber can be whitened and enhanced in color spectrum and deflect the vision of people, thereby improving the visual whiteness of the fiber.

In addition, the additives such as the purple powder, the blue powder, the titanium dioxide, the color fixing agent and the like adopted in the fiber treatment method are nontoxic and environment-friendly, meet the European Union standard, cannot pollute the environment, and return water can be directly discharged. Meanwhile, the fiber processing method is simple and easy to operate, cost-saving, high in adjustability and high in reliability.

Drawings

Fig. 1 is a process flow diagram of the high whiteness fiber treatment process of example 1.

Detailed Description

The method for treating a high-whiteness fiber and the fiber whitening composition of the present invention will be described in further detail with reference to specific examples.

The water-soluble primary shrinkage body of dicyandiamide-formaldehyde resin as a color fixing agent adopted in the embodiment of the invention has the following structure and is purchased from Nanhaiqi jade-like stone Shang Co.