阅读说明：本技术 一种复合造纸预絮凝剂的配方及制备方法 (Formula and preparation method of composite papermaking pre-flocculant ) 是由 史国平 于 2021-08-23 设计创作，主要内容包括：本发明提供一种复合造纸预絮凝剂的配方及制备方法,包括以下质量份数的组分：水8～15份；环氧氯丙烷4～5份；乙二胺2～3份；十六烷基二甲基叔胺2～3份；交联剂0.2～0.5份；复合造纸预絮凝剂的制备方法,包括以下步骤：以质量份数计选取原料备用；向反应釜内部加入上述质量份数的水、十六烷基二甲基叔胺、乙二胺及交联剂,混合搅拌均匀；向反应釜内部缓慢加入上述质量份数的环氧氯丙烷,升温至65～70℃,并恒温保持4.5～5h；本发明的复合造纸预絮凝剂的配方结合其方法所制备出的絮凝剂呈碱性,使用前通过加酸调节至中性即可,使用便捷,预絮凝效果好,较少的用量即可达到预期的絮凝效果,絮凝效果优良且稳定。(The invention provides a formula and a preparation method of a composite papermaking pre-flocculant, which comprises the following components in parts by mass: 8-15 parts of water; 4-5 parts of epoxy chloropropane; 2-3 parts of ethylenediamine; 2-3 parts of hexadecyl dimethyl tertiary amine; 0.2-0.5 part of a crosslinking agent; the preparation method of the composite papermaking pre-flocculant comprises the following steps: selecting raw materials in parts by mass for later use; adding the water, the hexadecyl dimethyl tertiary amine, the ethylene diamine and the cross-linking agent in parts by weight into the reaction kettle, and uniformly mixing and stirring; slowly adding the epoxy chloropropane in parts by weight into the reaction kettle, heating to 65-70 ℃, and keeping the temperature for 4.5-5 hours; the flocculant prepared by combining the formula of the composite papermaking pre-flocculant and the method is alkaline, is adjusted to be neutral by adding acid before use, is convenient and fast to use, has a good pre-flocculation effect, can achieve an expected flocculation effect by using a small amount, and has an excellent and stable flocculation effect.)

1. The formula of the composite papermaking pre-flocculant is characterized by comprising the following components in parts by mass:

8-15 parts of water;

4-5 parts of epoxy chloropropane;

2-3 parts of ethylenediamine;

2-3 parts of hexadecyl dimethyl tertiary amine;

0.2-0.5 part of a crosslinking agent.

2. The formula of the composite papermaking pre-flocculant according to claim 1, characterized by comprising the following components in parts by mass:

9.5 parts of water;

5 parts of epoxy chloropropane;

2 parts of ethylenediamine;

2.5 parts of hexadecyl dimethyl tertiary amine;

0.3 part of a crosslinking agent.

3. The formulation of the composite papermaking pre-flocculant according to claim 1, characterized in that: the water is distilled water.

4. The formulation of the composite papermaking pre-flocculant according to claim 1, characterized in that: the cross-linking agent is polyethylene polyamine.

5. The formulation of the composite papermaking pre-flocculant according to claim 4, characterized in that: the cross-linking agent is diethylenetriamine, triethylene tetramine or tetraethylene pentamine.

6. The preparation method of the composite papermaking pre-flocculant is characterized by comprising the following steps:

s1: selecting 8-15 parts of water by mass; 4-5 parts of epoxy chloropropane; 2-3 parts of ethylenediamine; 2-3 parts of hexadecyl dimethyl tertiary amine; 0.2-0.5 part of cross-linking agent for later use;

s2: adding the water, the hexadecyl dimethyl tertiary amine, the ethylene diamine and the cross-linking agent in parts by weight into the reaction kettle, and uniformly mixing and stirring;

s3: and slowly adding the epoxy chloropropane in parts by weight into the reaction kettle, heating to 65-70 ℃, and keeping the temperature for 4.5-5 hours at constant temperature to obtain the composite papermaking pre-flocculant.

7. The formulation of the composite papermaking pre-flocculant according to claim 6, characterized in that: the water is distilled water.

8. The formulation of the composite papermaking pre-flocculant according to claim 6, characterized in that: the cross-linking agent is polyethylene polyamine.

9. The formulation of the composite papermaking pre-flocculant according to claim 8, characterized in that: the cross-linking agent is diethylenetriamine, triethylene tetramine or tetraethylene pentamine.

10. The formulation of the composite papermaking pre-flocculant according to claim 6, characterized in that: in the S1, 9.5 parts of water, 5 parts of epichlorohydrin, 2 parts of ethylenediamine, 2.5 parts of hexadecyl dimethyl tertiary amine and 0.3 part of cross-linking agent.

Technical Field

The invention belongs to the technical field of production of a pre-flocculant, and particularly relates to a formula and a preparation method of a composite papermaking pre-flocculant.

Background

Increasing the filler content in printing and writing papers is crucial to improve the quality of the product as well as to reduce raw material and energy costs. However, replacing the cellulose fibers with fillers like calcium carbonate and clay reduces the strength of the formed sheet. Another problem that arises when increasing the filler content is that of making it more difficult to distribute the filler evenly throughout the three-dimensional sheet structure. One way to reduce these negative effects of increased filler content is to preflocculate the fillers before they are added to the wet end process system of the paper machine.

The existing preparation process of the pre-flocculant is complicated, the equipment cost is high, the time period is long, the popularization and the use are not facilitated, and the flocculation capacity of the existing flocculant still needs to be improved.

Therefore, the formula and the preparation method of the composite papermaking pre-flocculant are needed to be designed to improve the pre-flocculation effect, have easily available reaction conditions and simple preparation method so as to solve the technical problems in the prior art.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a formula and a preparation method of a composite papermaking pre-flocculant, which improve the pre-flocculation effect, have easily obtained reaction conditions and simple preparation method.

The technical scheme of the invention is as follows: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8-15 parts of water; 4-5 parts of epoxy chloropropane; 2-3 parts of ethylenediamine; 2-3 parts of hexadecyl dimethyl tertiary amine; 0.2-0.5 part of a crosslinking agent.

The formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 9.5 parts of water; 5 parts of epoxy chloropropane; 2 parts of ethylenediamine; 2.5 parts of hexadecyl dimethyl tertiary amine; 0.3 part of a crosslinking agent.

The water is distilled water.

The cross-linking agent is polyethylene polyamine.

The cross-linking agent is diethylenetriamine, triethylene tetramine or tetraethylene pentamine.

The preparation method of the composite papermaking pre-flocculant comprises the following steps:

s1: selecting 8-15 parts of water by mass; 4-5 parts of epoxy chloropropane; 2-3 parts of ethylenediamine; 2-3 parts of hexadecyl dimethyl tertiary amine; 0.2-0.5 part of cross-linking agent for later use;

s2: adding the water, the hexadecyl dimethyl tertiary amine, the ethylene diamine and the cross-linking agent in parts by weight into the reaction kettle, and uniformly mixing and stirring;

s3: and slowly adding the epoxy chloropropane in parts by weight into the reaction kettle, heating to 65-70 ℃, and keeping the temperature for 4.5-5 hours at constant temperature to obtain the composite papermaking pre-flocculant.

The water is distilled water.

The cross-linking agent is polyethylene polyamine.

The cross-linking agent is diethylenetriamine, triethylene tetramine or tetraethylene pentamine.

In the S1, 9.5 parts of water, 5 parts of epichlorohydrin, 2 parts of ethylenediamine, 2.5 parts of hexadecyl dimethyl tertiary amine and 0.3 part of cross-linking agent.

The invention has the beneficial effects that:

(1) the flocculant prepared by combining the formula of the composite papermaking pre-flocculant and the method is alkaline, is adjusted to be neutral by adding acid before use, is convenient and fast to use, has a good pre-flocculation effect, can achieve an expected flocculation effect by using a small amount, and has an excellent and stable flocculation effect;

(2) the reaction condition is easy to obtain, the preparation method is simple, the cost of the preparation equipment is low, and the popularization is easy.

Drawings

FIG. 1 is a process flow diagram of the method of preparing the composite papermaking pre-flocculant of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the invention, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8-15 parts of water; 4-5 parts of epoxy chloropropane; 2-3 parts of ethylenediamine; 2-3 parts of hexadecyl dimethyl tertiary amine; 0.2-0.5 part of a crosslinking agent.

There are a variety of alternative implementations of the above embodiments in the specific implementation.

Example 1: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8 parts of water; 4 parts of epoxy chloropropane; 2 parts of ethylenediamine; 2 parts of hexadecyl dimethyl tertiary amine; 0.2 part of a crosslinking agent.

Example 2: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 15 parts of water; 5 parts of epoxy chloropropane; 3 parts of ethylenediamine; 3 parts of hexadecyl dimethyl tertiary amine; 0.5 part of a crosslinking agent.

Example 3: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8 parts of water; 5 parts of epoxy chloropropane; 2 parts of ethylenediamine; 2 parts of hexadecyl dimethyl tertiary amine; 0.2 part of a crosslinking agent.

Example 4: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8 parts of water; 4 parts of epoxy chloropropane; 3 parts of ethylenediamine; 2 parts of hexadecyl dimethyl tertiary amine; 0.2 part of a crosslinking agent.

Example 5: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8 parts of water; 4 parts of epoxy chloropropane; 2 parts of ethylenediamine; 3 parts of hexadecyl dimethyl tertiary amine; 0.2 part of a crosslinking agent.

Example 6: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 15 parts of water; 4 parts of epoxy chloropropane; 3 parts of ethylenediamine; 3 parts of hexadecyl dimethyl tertiary amine; 0.5 part of a crosslinking agent.

Example 7: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 15 parts of water; 5 parts of epoxy chloropropane; 2 parts of ethylenediamine; 3 parts of hexadecyl dimethyl tertiary amine; 0.5 part of a crosslinking agent.

Example 8: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 15 parts of water; 5 parts of epoxy chloropropane; 3 parts of ethylenediamine; 2 parts of hexadecyl dimethyl tertiary amine; 0.5 part of a crosslinking agent.

Example 9: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 8 parts of water; 5 parts of epoxy chloropropane; 3 parts of ethylenediamine; 3 parts of hexadecyl dimethyl tertiary amine; 0.2 part of a crosslinking agent.

Example 10: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 15 parts of water; 4 parts of epoxy chloropropane; 2 parts of ethylenediamine; 2 parts of hexadecyl dimethyl tertiary amine; 0.5 part of a crosslinking agent.

Example 11: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 9.5 parts of water; 5 parts of epoxy chloropropane; 2 parts of ethylenediamine; 2.5 parts of hexadecyl dimethyl tertiary amine; 0.3 part of a crosslinking agent.

Example 12: the formula of the composite papermaking pre-flocculant comprises the following components in parts by mass: 11.5 parts of water; 4.5 parts of epoxy chloropropane; 2.5 parts of ethylenediamine; 2.5 parts of hexadecyl dimethyl tertiary amine; 0.35 part of a crosslinking agent.

In the above embodiment, the water is distilled water; the cross-linking agent is polyethylene polyamine; further, the cross-linking agent is diethylenetriamine, triethylene tetramine or tetraethylene pentamine.

The embodiment also discloses a preparation method of the composite papermaking pre-flocculant.

The preparation method of the composite papermaking pre-flocculant comprises the following steps:

s1: selecting 8-15 parts of water by mass; 4-5 parts of epoxy chloropropane; 2-3 parts of ethylenediamine; 2-3 parts of hexadecyl dimethyl tertiary amine; 0.2-0.5 part of cross-linking agent for later use;

s2: adding the water, the hexadecyl dimethyl tertiary amine, the ethylene diamine and the cross-linking agent in parts by weight into the reaction kettle, and uniformly mixing and stirring;

s3: slowly adding the epoxy chloropropane in parts by weight into the reaction kettle, heating to 65-70 ℃, keeping the temperature for 4.5-5 hours,

s4: and obtaining the composite papermaking pre-flocculant.

The composite water inlet flocculating agent obtained by the preparation method of the composite papermaking pre-flocculating agent in the embodiment is alkaline, is adjusted to be neutral by adding acid before use, is convenient to use and good in pre-flocculating effect, can achieve the expected flocculating effect with less use amount, and is excellent and stable in flocculating effect; in addition, the preparation method can finish the used working procedures only by one reaction kettle with a heating function, such as an electric heating reaction kettle and the like, and has the advantages of low equipment cost, simple preparation method and easy popularization; in addition, the composite papermaking pre-flocculating agent has good flocculation effect, does not have secondary pollution to water quality, and can meet the use requirement.

In the above embodiment, the water is distilled water; the cross-linking agent is polyethylene polyamine; the cross-linking agent is diethylenetriamine, triethylene tetramine or tetraethylene pentamine.

As a more specific embodiment of S1, in S1, 9.5 parts of water, 5 parts of epichlorohydrin, 2 parts of ethylenediamine, 2.5 parts of hexadecyl dimethyl tertiary amine and 0.3 part of a crosslinking agent are added.

Thus, various embodiments of the present invention have been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

The above-mentioned embodiments only express some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.