阅读说明：本技术 一种办公用快干胶水及其制备工艺 (Office quick-drying glue and preparation process thereof ) 是由 童文来 章鹏昆 于 2020-11-19 设计创作，主要内容包括：本申请涉及办公用品的领域,具体公开了一种办公用快干胶水及其制备工艺。快干胶水的原料以重量份计包括乳化剂2-20份、苯乙烯50-150份、丙烯酸酯200-500份、醋酸乙烯酯50-350份、引发剂2-10、pH缓冲剂1-5份以及水350-550份。其制备工艺为：S1：乳化液制备；S2：聚合阶段；3：后处理；得到办公用快干胶水。本申请的快干胶通过选用苯乙烯、丙烯酸酯以及醋酸乙烯酯作为单体,能够有效的提高固含量,减少水的添加量,减少了最终得到的胶水中水的干燥速度,从而使得制得的胶水的凝固速度快,最终减少了纸张粘接的时间。(The application relates to the field of office supplies, and particularly discloses quick-drying glue for office and a preparation process thereof. The raw materials of the quick-drying glue comprise, by weight, 2-20 parts of an emulsifier, 50-150 parts of styrene, 500 parts of acrylate 200-550 parts, 50-350 parts of vinyl acetate, 2-10 parts of an initiator, 1-5 parts of a pH buffering agent and 550 parts of water 350-550 parts. The preparation process comprises the following steps: s1: preparing an emulsion; s2: a polymerization stage; 3: post-treatment; obtaining the office quick-drying glue. The quick-drying glue can effectively improve solid content, reduce the addition amount of water and reduce the drying speed of water in finally obtained glue by selecting styrene, acrylic ester and vinyl acetate as monomers, so that the solidification speed of the prepared glue is high, and the time for bonding paper is finally reduced.)

1. The utility model provides a quick-drying glue for official working which characterized in that: the raw materials comprise, by weight, 2-20 parts of an emulsifier, 50-150 parts of styrene, 500 parts of acrylate 200-.

2. An office quick-drying glue as claimed in claim 1, characterized in that: the pH buffer is a mixed solution of sodium bicarbonate and sodium acetate, and the pH in the system is controlled to be 6.5-7.5.

3. An office quick-drying glue as claimed in claim 1, characterized in that: the pH buffer is a mixed solution of sodium citrate and sodium pyrophosphate, and the pH in the system is controlled to be 6.5-7.5.

4. An office quick-drying glue as claimed in claim 1, characterized in that: the initiator is one of sodium persulfate, ammonium persulfate and potassium persulfate.

5. An office quick-drying glue as claimed in claim 1, characterized in that: the emulsifier is one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, emulsifiers OP-10, NP-10 and AEO-9.

6. An office quick-drying glue as claimed in claim 1, characterized in that: the raw materials also comprise 40-70 parts of talcum powder by weight.

7. An office quick-drying glue as claimed in claim 1, characterized in that: the raw materials also comprise 2 to 5 weight parts of preservative, namely one of isothiazolinone, benzisothiazolin-3-one and hexahydro-1, 3, 5-tri (alpha-hydroxyethyl) -s-triazine.

8. An office quick-drying glue according to claim 7, characterized in that: the preservative is isothiazolinone.

9. An office quick-drying glue as claimed in claim 1, characterized in that: the acrylate is one of ethyl acrylate, butyl acrylate, isooctyl acrylate and methyl methacrylate.

10. A preparation method of quick-drying office glue is characterized by comprising the following steps: the method comprises the following steps:

s1: preparing an emulsion; adding part of water into the first reaction vessel according to the parts by weight, and starting stirring; then adding an emulsifier in parts by weight, simultaneously adding styrene, acrylic ester and vinyl acetate in parts by weight, and continuously stirring until the material in the first reaction container is milky white to prepare an emulsion for later use;

s2: a polymerization stage; adding the rest water into a second reaction vessel, and starting stirring when the temperature of the added water is 70-80 ℃; then adding an initiator and a pH buffering agent according to the parts by weight, and stirring until the initiator and the pH buffering agent are completely dissolved; then adding part of the emulsion prepared by the step S1 into a second reaction container in parts by weight, continuously stirring until the temperature of substances in the second reaction container is increased to 80-90 ℃, dropwise adding the rest of the emulsion prepared by the step S1 into the second reaction container, and controlling the temperature of the materials in the second reaction container to be 81-85 ℃; after the dropwise addition of the rest part of the emulsion is finished, preserving the heat for 1-1.5 h;

s3: post-treatment; and after the heat preservation of the materials in the second reaction container is finished, cooling to 50-60 ℃, then dropwise adding ammonia water to adjust the pH of the materials in the second reaction container to 6.5-7.5, then adding a preservative according to the parts by weight, continuously stirring for 30-45min, and cooling to room temperature to obtain the office quick-drying glue.

Technical Field

The application relates to the field of office supplies, in particular to quick-drying glue for office and a preparation process thereof.

Background

In daily life, work and study, people use and contact liquid glue in large quantities to adhere paper and various materials.

For example, the chinese patent application publication No. CN109486437A discloses an office environment-friendly glue, which comprises the following materials in parts by mass: 10 parts of starch, 3 parts of resin, 8 parts of latex, 12 parts of catalyst, 6 parts of acetic acid, 3 parts of propanol, 4 parts of essence and 45 parts of water. The obtained glue has good adhesion, two adhered objects are not easy to separate, the environment-friendly property is good, no harm is caused to human health, pungent smell and fragrant smell are not generated after the glue is smeared, the cost is low, and the economical efficiency is good. When the environment-friendly glue is used, after the environment-friendly glue for office work is coated on paper, the paper to be adhered is adhered to the position where the glue is coated, and after moisture in the glue is dried, the glue generates adhesive force so as to adhere the two pieces of paper together.

The glue for common use needs 5 to 10 minutes to dry the water in the glue, so that the glue generates the adhesive force. The time spent waiting for the moisture in the glue to dry is generally longer, resulting in a longer time spent bonding the paper.

Disclosure of Invention

In order to solve the problem that the time for waiting for drying the water in the glue is too long, the application provides the office quick-drying glue and the preparation process thereof.

In a first aspect, the application provides a quick-drying glue for office, which adopts the following technical scheme:

the quick-drying office glue comprises, by weight, 2-20 parts of an emulsifier, 50-150 parts of styrene, 500 parts of acrylate 200-.

By adopting the technical scheme, styrene, acrylic ester and vinyl acetate are selected as monomers, so that the solid content can be effectively improved, the addition amount of water is reduced, and the drying speed of water in finally obtained glue is reduced, so that the solidification speed of the prepared glue is high, and the paper bonding time is finally reduced. The three monomers of styrene, acrylic ester and vinyl acetate are colorless, and are colorless after being mixed, so that the application range is wide when the adhesive is used for offices; meanwhile, after the styrene, the acrylate and the vinyl acetate are combined, the adhesion is better.

As a further improvement of the invention, the pH buffer is a mixed solution of sodium bicarbonate and sodium acetate, and the pH in the system is controlled to be 6.5-7.5.

As a further improvement of the invention, the pH buffer is a mixed solution of sodium citrate and sodium pyrophosphate, and the pH in the system is controlled to be 6.5-7.5.

Through adopting above-mentioned technical scheme, through setting up buffer solution, can make the monomer take place the in-process of polymerization cross-linking and can normally go on, keep glue under the pH valve about neutral, can make difficult emergence of glue rotten.

As a further improvement of the invention, the initiator is one of sodium persulfate, ammonium persulfate and potassium persulfate.

By adopting the technical scheme, one of sodium persulfate, ammonium persulfate and potassium persulfate is selected, so that the glue can be decomposed to generate free radicals in the glue preparation process, the glue solution can be solidified, and the adhesive force of the glue solution can be exerted; meanwhile, the initiation reaction can be generated in the monomer, and the utilization rate of the monomer raw material is improved.

As a further improvement of the invention, the emulsifier is one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, emulsifiers OP-10, NP-10 and AEO-9.

By adopting the technical scheme, the emulsifier is added, so that the interfacial tension of each component in each mixed system is reduced in the glue preparation process, and a uniform dispersion or emulsified substance is formed; the compatibility among all the components is increased, and the compatibility among all the components is improved.

As a further improvement of the invention, the raw materials also comprise 40 to 70 parts by weight of talcum powder.

Through adopting above-mentioned technical scheme, through adding talcum powder in glue for the proportion of taking up of water in glue reduces, thereby can make the solid content of glue further improve, finally makes the drying rate of the water of glue when using faster.

As a further improvement of the invention, the raw materials also comprise 2 to 5 parts by weight of preservative, one of preservative isothiazolinone, benzisothiazolin-3-one and hexahydro-1, 3, 5-tri (alpha-hydroxyethyl) -s-triazine.

Through adopting above-mentioned technical scheme, through adding the antiseptic in glue, can solve because some problems of the glue breakdown of emulsion, rotten, mould, fermentation and smelly that fungus class pollutes arouses for the shelf life of glue obtains promoting.

As a further improvement of the invention, the preservative is isothiazolinone.

By adopting the technical scheme, the isothiazolinone has strong bactericidal power and wide antibacterial spectrum. The adhesive has the advantages of convenient use, stable performance, safety, reliability, no pollution to the environment, good compatibility with other components in the glue, good compatibility and no adverse effect.

As a further improvement of the invention, the acrylate is one of ethyl acrylate, butyl acrylate, isooctyl acrylate and methyl methacrylate.

In a second aspect, the application provides a preparation method of office quick-drying glue, which adopts the following technical scheme:

a preparation method of office quick-drying glue comprises the following steps:

s1: preparing an emulsion; adding part of water into the first reaction vessel according to the parts by weight, and starting stirring; then adding an emulsifier in parts by weight, simultaneously adding styrene, acrylic ester and vinyl acetate in parts by weight, and continuously stirring until the material in the first reaction container is milky white to prepare an emulsion for later use;

s2: a polymerization stage; adding the rest water into a second reaction vessel, and starting stirring when the temperature of the added water is 70-80 ℃; then adding an initiator and a pH buffering agent according to the parts by weight, and stirring until the initiator and the pH buffering agent are completely dissolved; then adding part of the emulsion prepared by the step S1 into a second reaction container in parts by weight, continuously stirring until the temperature of substances in the second reaction container is increased to 80-90 ℃, dropwise adding the rest of the emulsion prepared by the step S1 into the second reaction container, and controlling the temperature of the materials in the second reaction container to be 81-85 ℃; after the dropwise addition of the rest part of the emulsion is finished, preserving the heat for 1-1.5 h;

s3: post-treatment; and after the heat preservation of the materials in the second reaction container is finished, cooling to 50-60 ℃, then dropwise adding ammonia water to adjust the pH of the materials in the second reaction container to 6.5-7.5, then adding a preservative according to the parts by weight, continuously stirring for 30-45min, and cooling to room temperature to obtain the office quick-drying glue.

Through adopting above-mentioned technical scheme, in adding into second reaction vessel twice through making the emulsion with S1 to choose the mode of dropwise add when adding the emulsion for the second time, can prevent to gather suddenly, reduced the possibility of taking place the incident. Meanwhile, in the step S2, after the dropwise addition of the rest of the emulsion is finished, controlling the temperature of the material kneaded by the second reaction container to be 81-85 ℃; when the temperature is lower than 81 ℃, the reaction speed is slow due to insufficient temperature, so that more residual monomers exist, the reaction is insufficient, and the utilization rate of materials is low. When the temperature is higher than 85 ℃, the polymerization reaction rate is too high due to the high temperature, the heat release cannot be discharged in time, and sudden aggregation may be caused, thereby increasing the possibility of production safety accidents. The temperature is controlled within the range of 81-85 ℃, so that the utilization rate of materials can be improved, and the possibility of production safety accidents can be reduced.

On the other hand, ammonia is selected as the substance for adjusting the pH, and the use of sodium hydroxide and sodium hydroxide to introduce other metal ions is avoided. When other metal ions are introduced in the post-treatment process, the hydrogen bonds of the finally prepared glue are reduced, so that the peel strength of the glue is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by selecting styrene, acrylic ester and vinyl acetate as monomers, the solid content can be effectively improved, the addition amount of water is reduced, and the drying speed of water in finally obtained glue is reduced, so that the solidification speed of the prepared glue is high, and the paper bonding time is finally reduced;

2. one of sodium persulfate, ammonium persulfate and potassium persulfate is selected, so that the glue can be decomposed to generate free radicals in the glue preparation process, the glue solution can be solidified, and the adhesive force of the glue solution can be exerted; meanwhile, an initiation reaction can be generated in the monomer, so that the utilization rate of the monomer raw material is improved;

3. the emulsion prepared by the S1 is added into the second reaction container twice, and a dripping mode is selected when the emulsion is added for the second time, so that sudden aggregation can be prevented, and the possibility of safety accidents is reduced; meanwhile, the temperature of materials pinched by the second reaction container is controlled to be 81-85 ℃, so that the utilization rate of the materials can be improved, and the possibility of production safety accidents can be reduced.

Drawings

FIG. 1 is a process flow diagram of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

In the following examples and comparative examples:

the styrene is sold by Suzhou Kangshuo chemical company;

the methyl acrylate is sold by Henan sublimation chemical product company Limited;

the vinyl acetate is sold by Henan Bai Huali chemical products company Limited;

the polyoxyethylene ether is polyoxyethylene ether sold by Fengshen technology Co., Ltd, Dongguan city;

the benzoyl peroxide is benzoyl peroxide sold by Jinnan Biqi chemical company;

the acetic acid and the sodium acetate are both sold by chemical company Limited of Wande Hubei;

the ammonia water is 15% ammonia water sold by Jinnan Biqi chemical company;

the ethyl acrylate is sold by Henan Bai Huali chemical products company Limited;

the talcum powder is transparent talcum powder sold by the Orsena chemical Co., Ltd in Jiangyun city;

the sodium citrate and the sodium pyrophosphate are both sodium citrate and sodium pyrophosphate sold by chemical company Limited in Kyowa Wande;

the sodium persulfate is sodium persulfate sold by Jinnan Biqi chemical company;

the ammonium persulfate is the ammonium persulfate sold by Jinnan Binxi chemical company;

the potassium persulfate is potassium persulfate sold by Jinnan Binxei chemical company;

the sodium dodecyl sulfate is sodium dodecyl sulfate sold by Togao science and technology Limited in Dongguan;

the sodium dodecyl benzene sulfonate is sodium dodecyl benzene sulfonate sold by Fengshen technology Limited of Dongguan city;

the emulsifier OP-10 is emulsifier OP-10 sold by Fengshen technology Co., Ltd, Dongguan;

NP-10 is NP-10 sold by Fengshen technologies, Inc. of Dongguan;

AEO-9 is AEO-9 sold by Fengshen technology Co., Ltd, Dongguan;

isothiazolinone sold by chemical Limited of Jinnan Kathon;

the benzisothiazolin-3-one is benzisothiazolin-3-one sold by Jinnan Kathon chemical Limited;

hexahydro-1, 3, 5-tris (alpha-hydroxyethyl) -s-triazine is hexahydro-1, 3, 5-tris (alpha-hydroxyethyl) -s-triazine sold by chemical Limited of Jinan Kathon;

the butyl acrylate is sold by Henan Bai Huali chemical products company Limited;

the isooctyl acrylate is prepared from isooctyl acrylate sold by Henan Bai Huali chemical products, Inc.;

methyl methacrylate sold by Henan Bai Huali chemical products Co., Ltd is used.

Example 1:

referring to fig. 1, the embodiment discloses a preparation method of a quick-drying glue for office use, which comprises the following steps: the following materials are all calculated by weight;

s1: and (4) preparing an emulsion. Adding 200 parts by weight of deionized water into a first reaction vessel, wherein the first reaction vessel is an emulsifying kettle, and starting stirring. Then adding 11 parts of emulsifier, 100 parts of styrene, 350 parts of acrylate and 200 parts of vinyl acetate at the same time, and continuously stirring until the materials in the first reaction container are milky white to prepare emulsion for later use. Wherein the acrylate is methyl acrylate; the emulsifier is polyoxyethylene ether.

S2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 75 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 85 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 83 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is benzoyl peroxide; the pH buffer is a mixture of acetic acid and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 55 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7, continuously stirring for 37min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 2:

the embodiment discloses a preparation method of quick-drying office glue, which comprises the following steps: the following materials are all calculated by weight;

s1: and (4) preparing an emulsion. Adding 200 parts by weight of deionized water into a first reaction vessel, wherein the first reaction vessel is an emulsifying kettle, and starting stirring. Then adding 11 parts of emulsifier, 100 parts of styrene, 350 parts of acrylate and 200 parts of vinyl acetate at the same time, and continuously stirring until the materials in the first reaction container are milky white to prepare emulsion for later use. Wherein the acrylic ester is ethyl acrylate; the emulsifier is sodium dodecyl sulfate.

S2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 75 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 85 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 83 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is sodium persulfate; the pH buffer is a mixture of sodium bicarbonate and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 55 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7, continuously stirring for 37min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 3:

the embodiment discloses a preparation method of quick-drying office glue, which comprises the following steps: the following materials are all calculated by weight;

s1: and (4) preparing an emulsion. Adding 200 parts by weight of deionized water into a first reaction vessel, wherein the first reaction vessel is an emulsifying kettle, and starting stirring. Then adding 11 parts of emulsifier, 100 parts of styrene, 350 parts of acrylate and 200 parts of vinyl acetate at the same time, and continuously stirring until the materials in the first reaction container are milky white to prepare emulsion for later use. Wherein the acrylate is butyl acrylate; the emulsifier is sodium dodecyl benzene sulfonate.

S2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 75 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 85 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 83 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is ammonium persulfate; the pH buffer is a mixture of sodium citrate and sodium pyrophosphate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 55 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7, continuously stirring for 37min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 4:

the embodiment discloses a preparation method of quick-drying office glue, which comprises the following steps: the following materials are all calculated by weight;

s1: and (4) preparing an emulsion. Adding 200 parts by weight of deionized water into a first reaction vessel, wherein the first reaction vessel is an emulsifying kettle, and starting stirring. Then adding 11 parts of emulsifier, 100 parts of styrene, 350 parts of acrylate and 200 parts of vinyl acetate at the same time, and continuously stirring until the materials in the first reaction container are milky white to prepare emulsion for later use. Wherein the acrylate is isooctyl acrylate; the emulsifier is OP-10.

S2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 75 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 85 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 83 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is potassium persulfate; the pH buffer is a mixture of sodium bicarbonate and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 55 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7, continuously stirring for 37min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 5:

the difference between this example and example 2 is that NP-10 is used as the emulsifier in S1.

Example 6:

the difference between this example and example 2 is that AEO-9 is used as the emulsifier in S1.

Example 7:

this example differs from example 2 in that:

s2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 75 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator, 3 parts of pH buffer and 55 parts of talcum powder are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 85 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 83 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is sodium persulfate; the pH buffer is a mixture of sodium bicarbonate and sodium acetate.

Example 8:

this example differs from example 1 in that:

s3: post-treatment; and after the heat preservation of the materials in the second reaction container is finished, cooling to 50-60 ℃, then dropwise adding ammonia water to adjust the pH of the materials in the second reaction container to 7, then adding 3 parts of preservative, continuously stirring for 30-45min, and cooling to room temperature to obtain the office quick-drying glue. Wherein the antiseptic is isothiazolinone.

Example 9:

this example differs from example 8 in that:

s3: post-treatment; and after the heat preservation of the materials in the second reaction container is finished, cooling to 50-60 ℃, then dropwise adding ammonia water to adjust the pH of the materials in the second reaction container to 7, then adding 3 parts of preservative, continuously stirring for 30-45min, and cooling to room temperature to obtain the office quick-drying glue. Wherein the antiseptic is benzisothiazolin-3-one.

Example 10:

this example differs from example 8 in that:

s3: post-treatment; and after the heat preservation of the materials in the second reaction container is finished, cooling to 50-60 ℃, then dropwise adding ammonia water to adjust the pH of the materials in the second reaction container to 7, then adding 3 parts of preservative, continuously stirring for 30-45min, and cooling to room temperature to obtain the office quick-drying glue. Wherein the preservative is hexahydro-1, 3, 5-tri (alpha-hydroxyethyl) -s-triazine.

Example 11:

this example differs from example 1 in that:

s2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 75 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator, 3 parts of pH buffer and 55 parts of talcum powder are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 85 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 83 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is benzoyl peroxide; the pH buffer is a mixture of acetic acid and sodium acetate.

S3: post-treatment; and after the heat preservation of the materials in the second reaction container is finished, cooling to 50-60 ℃, then dropwise adding ammonia water to adjust the pH of the materials in the second reaction container to 7, then adding 3 parts of preservative, continuously stirring for 30-45min, and cooling to room temperature to obtain the office quick-drying glue. Wherein the antiseptic is isothiazolinone.

Examples 12 to 15 differ from example 11 in that the starting materials used in S1 to S3 are shown in Table 1 in parts by weight: unit: portions are

TABLE 1

Example 16:

this example differs from example 1 in that:

s2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 70 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is increased to 80 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 81 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is benzoyl peroxide; the pH buffer is a mixture of acetic acid and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 50 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 6.5, continuously stirring for 30min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 17:

this example differs from example 1 in that:

s2: a polymerization stage. Adding 250 parts of deionized water into a second reaction vessel, wherein the second reaction vessel is a reaction kettle, raising the temperature of the deionized water to 80 ℃ before adding the deionized water, and starting stirring. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is increased to 90 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 85 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is benzoyl peroxide; the pH buffer is a mixture of acetic acid and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 60 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7.5, continuously stirring for 45min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 18:

this example differs from example 1 in that:

s2: a polymerization stage. 250 parts of deionized water is added into a second reaction vessel, the second reaction vessel is a reaction kettle, and the temperature of the deionized water is increased to 73 ℃ before the deionized water is added, and stirring is started. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 83 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to be 82 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is benzoyl peroxide; the pH buffer is a mixture of acetic acid and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 53 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7.5, continuously stirring for 34min, and then cooling to room temperature to obtain the office quick-drying glue.

Example 19:

this example differs from example 1 in that:

s2: a polymerization stage. 250 parts of deionized water is added into a second reaction vessel, the second reaction vessel is a reaction kettle, and the temperature of the deionized water is increased to 78 ℃ before the deionized water is added, and stirring is started. Then 6 parts of initiator and 3 parts of pH buffer are added and stirred until completely dissolved. Then adding 15% of emulsion prepared by S1 in percentage by weight into a second reaction container in parts by weight, continuously stirring until the temperature of the substances in the second reaction container is raised to 87 ℃, dropwise adding the rest of emulsion prepared by S1 into the second reaction container, and controlling the temperature of the substances in the second reaction container to 84 ℃; and after the dropwise addition of the rest part of the emulsion is finished, keeping the temperature for 1.2 h. The initiator is benzoyl peroxide; the pH buffer is a mixture of acetic acid and sodium acetate.

S3: and (5) post-treatment. And after the heat preservation of the materials in the second reaction container is finished, cooling to 58 ℃, then dropwise adding 20 parts of ammonia water to adjust the pH of the materials in the second reaction container to 7.5, continuously stirring for 43min, and then cooling to room temperature to obtain the office quick-drying glue.

Comparative example 1: the difference from the embodiment 1 is that the raw materials comprise 2 to 20 portions of emulsifier, 50 to 150 portions of polyvinyl alcohol, 500 portions of acrylate 200-350 portions, 50 to 350 portions of vinyl acetate, 2 to 10 portions of initiator, 1 to 5 portions of pH buffer and 550 portions of water 350-550 portions in portion by weight.

Comparative example 2: the difference from the embodiment 1 is that the raw materials comprise 2 to 5 portions of diallyl phthalate, 50 to 150 portions of polyvinyl alcohol, 2 to 20 portions of emulsifier, 2 to 10 portions of initiator, 1 to 5 portions of pH buffer and 550 portions of water in portion by weight.

And (3) performance detection:

1. the solids content was determined and the measured data were recorded in table 2. The determination method is determined by the measuring method described in GB-T2793-1995.

2. The time required for the glue to dry was measured in an environment of (30 ± 10) ° c, humidity (60 ± 15)% and the drying time of the glue was recorded in table 2.

3. The adhesion was measured and the measured test results are recorded in table 2. The determination method adopts QB/T1961-2011 test method. The determination method comprises the following steps: cutting 70g/m2-80g/m 2A 4 copy paper into (105 +/-3) mm multiplied by (37 +/-2) mm samples, uniformly coating a thin layer of glue on the 90mm multiplied by 37mm part of the samples, adhering, slightly flattening by hand, then standing for 1h at (30 +/-10) DEG C and humidity (60 +/-15)% by hand, uniformly applying stripping force on the two ends without glue coating until the paper is broken by hand, and observing whether the adhesion part is separated; the adhesive is not good when the adhesive is separated; the adhesive property is good when the adhesive is not separated.

TABLE 2

Compared with the example 7, the comparison between the example 1 and the example 7 shows that the proportion of deionized water in the quick-drying glue can be reduced after the talcum powder is added, so that the solid content of the quick-drying glue can be improved, and the drying time of the quick-drying glue can be reduced.

From a comparison of example 1 with comparative example 1, it can be concluded that when styrene, acrylate and vinyl acetate are not present simultaneously, the solid content of the quick-drying glue is significantly reduced, resulting in a significant increase in the drying time of the quick-drying glue. Meanwhile, the adhesive can be obtained by combining styrene, acrylic ester and vinyl acetate, and the obtained adhesive is better in cohesiveness.

By comparing comparative example 1 and comparative example 2, it can be concluded that when polyvinyl alcohol is used as the polymerization monomer, the resulting glue has a lower solids content and a longer drying time. The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.