阅读说明：本技术 一种应用于地下送热管的防水胶及其制备方法 (Waterproof adhesive applied to underground heat transfer pipe and preparation method thereof ) 是由 苑智鹏 姜波 杨诚 娄世龙 解秀明 杜鹏飞 于 2021-09-14 设计创作，主要内容包括：一种应用于地下送热管的防水胶及其制备方法,涉及一种应用于送热管的防水胶及其制备方法。本发明是要解决现有的应用于地下送热管的防水胶的防腐蚀的性能较差,影响了防水胶的使用寿命的技术问题。本发明的一种应用于地下送热管的防水胶是由丙烯酸乳液、水泥、纳米碳酸钙、乙二醇、聚乙烯醇、苯酚、尿素、辅助隔热助剂、醋酸和防腐剂组成。本发明的防水胶中加入了防腐剂,防腐效果好,而且具有优异的柔韧性,能抵御水管高频的震动,而不会开裂、脱落。经过检测：5h后,粘接强度达到20Mpa,耐水性好。粘接后,放入50℃水中浸泡1h,粘接强度为18Mpa。(A waterproof adhesive applied to an underground heat transfer pipe and a preparation method thereof relate to a waterproof adhesive applied to a heat transfer pipe and a preparation method thereof. The invention aims to solve the technical problems that the existing waterproof glue applied to the underground heat transfer pipe has poor corrosion resistance and influences the service life of the waterproof glue. The invention relates to a waterproof adhesive applied to an underground heat transfer pipe, which consists of acrylic emulsion, cement, nano calcium carbonate, glycol, polyvinyl alcohol, phenol, urea, an auxiliary heat insulation auxiliary agent, acetic acid and a preservative. The waterproof glue disclosed by the invention is added with the preservative, so that the waterproof glue is good in corrosion resistance effect and excellent in flexibility, and can resist the high-frequency vibration of a water pipe without cracking or falling off. Through detection: after 5h, the bonding strength reaches 20Mpa, and the water resistance is good. After bonding, the materials are soaked in 50 ℃ water for 1h, and the bonding strength is 18 Mpa.)

1. The waterproof adhesive applied to the underground heat transfer pipe is characterized by consisting of 30 to 50 parts by weight of acrylic emulsion, 10 to 25 parts by weight of cement, 10 to 20 parts by weight of nano calcium carbonate, 20 to 25 parts by weight of ethylene glycol, 20 to 25 parts by weight of polyvinyl alcohol, 10 to 25 parts by weight of phenol, 5 to 8 parts by weight of urea, 5 to 10 parts by weight of auxiliary heat insulation auxiliary agent, 1 to 5 parts by weight of acetic acid and 1 to 5 parts by weight of preservative;

the auxiliary heat insulation auxiliary agent is silicon dioxide;

the preservative consists of 26 to 60 parts by mass of thermosetting phenolic resin, 15 to 41 parts by mass of decylamine, 8 to 21 parts by mass of phenolic resin and 28 to 60 parts by mass of polyimide.

2. The waterproof adhesive for the underground heat transfer pipe according to claim 1, wherein the waterproof adhesive for the underground heat transfer pipe comprises, by weight, 30 parts of acrylic emulsion, 10 parts of cement, 10 parts of nano calcium carbonate, 20 parts of ethylene glycol, 20 parts of polyvinyl alcohol, 10 parts of phenol, 5 parts of urea, 5 parts of auxiliary heat insulation auxiliary agent, 1 part of acetic acid and 1 part of preservative.

3. The waterproof adhesive for the underground heat transfer pipe according to claim 1, wherein the waterproof adhesive for the underground heat transfer pipe comprises 50 parts by weight of acrylic emulsion, 25 parts by weight of cement, 20 parts by weight of nano calcium carbonate, 25 parts by weight of ethylene glycol, 25 parts by weight of polyvinyl alcohol, 25 parts by weight of phenol, 8 parts by weight of urea, 10 parts by weight of auxiliary heat insulation auxiliary agent, 5 parts by weight of acetic acid and 5 parts by weight of preservative.

4. The waterproof adhesive for the underground heat transfer pipe according to claim 1, wherein the waterproof adhesive for the underground heat transfer pipe comprises, by weight, 40 parts of acrylic emulsion, 20 parts of cement, 15 parts of nano calcium carbonate, 22 parts of ethylene glycol, 22 parts of polyvinyl alcohol, 20 parts of phenol, 6 parts of urea, 8 parts of an auxiliary heat insulation auxiliary agent, 4 parts of acetic acid and 3 parts of a preservative.

5. The waterproof adhesive for the underground heat transfer pipe as claimed in claim 1, wherein the preservative comprises 30 parts by mass of thermosetting phenolic resin, 30 parts by mass of decylamine, 15 parts by mass of phenolic resin and 40 parts by mass of polyimide.

6. The method for preparing the waterproof adhesive applied to the underground heat transfer pipe according to claim 1, wherein the preparation method of the waterproof adhesive applied to the underground heat transfer pipe comprises the following steps:

firstly, adding polyvinyl alcohol and ethylene glycol into phenol, heating and dissolving, then adding acrylic emulsion, urea and acetic acid, stirring uniformly, and stirring and reacting for 0.5-1.5 h to prepare a mixed material;

fully mixing the cement, the nano calcium carbonate, the auxiliary heat insulation auxiliary agent, the preservative and the mixed material, and stirring for 2.5-3.5 hours to obtain the waterproof adhesive applied to the underground heat transfer pipe;

the waterproof adhesive applied to the underground heat transfer pipe comprises, by mass, 30-50 parts of acrylic emulsion, 10-25 parts of cement, 10-20 parts of nano calcium carbonate, 20-25 parts of ethylene glycol, 20-25 parts of polyvinyl alcohol, 10-25 parts of phenol, 5-8 parts of urea, 5-10 parts of auxiliary heat insulation auxiliary agents, 1-5 parts of acetic acid and 1-5 parts of preservatives.

7. The method for preparing waterproof glue used for underground heat transfer pipes according to claim 6, wherein the heating temperature in the first step is 60 ℃.

8. The method for preparing the waterproof adhesive applied to the underground heat transfer pipe according to claim 6, wherein the stirring reaction is carried out for 1 hour in the first step.

9. The method for preparing the waterproof adhesive applied to the underground heat transfer pipe according to claim 6, wherein the stirring is carried out for 3 hours in the second step.

Technical Field

The invention relates to waterproof glue applied to a heat transfer pipe and a preparation method thereof.

Background

In northern areas of China, the temperature is low in winter, and hot water needs to be sent to the indoor from places such as a boiler room, a direct-fired machine room and a heat supply center by a heat supply pipeline, so that the indoor temperature is increased. The pipeline is generally buried underground, however because there is hot water in the pipeline, when live time overlength or installation are improper, the condition that the pipeline can appear the infiltration takes place, generally adopts to paint waterproof glue and solves this problem, but current waterproof glue's anticorrosive performance is relatively poor, has influenced waterproof glue's life.

Disclosure of Invention

The invention provides waterproof glue applied to an underground heat transfer pipe and a preparation method thereof, aiming at solving the technical problems that the existing waterproof glue applied to the underground heat transfer pipe has poor corrosion resistance and influences the service life of the waterproof glue.

The waterproof adhesive applied to the underground heat transfer pipe is composed of 30-50 parts by weight of acrylic emulsion, 10-25 parts by weight of cement, 10-20 parts by weight of nano calcium carbonate, 20-25 parts by weight of ethylene glycol, 20-25 parts by weight of polyvinyl alcohol, 10-25 parts by weight of phenol, 5-8 parts by weight of urea, 5-10 parts by weight of auxiliary heat insulation auxiliary agent, 1-5 parts by weight of acetic acid and 1-5 parts by weight of preservative;

the auxiliary heat insulation auxiliary agent is silicon dioxide;

the preservative consists of 26 to 60 parts by mass of thermosetting phenolic resin, 15 to 41 parts by mass of decylamine, 8 to 21 parts by mass of phenolic resin and 28 to 60 parts by mass of polyimide.

The preparation method of the waterproof adhesive applied to the underground heat transfer pipe comprises the following steps:

firstly, adding polyvinyl alcohol and ethylene glycol into phenol, heating and dissolving, then adding acrylic emulsion, urea and acetic acid, stirring uniformly, and stirring and reacting for 0.5-1.5 h to prepare a mixed material;

fully mixing the cement, the nano calcium carbonate, the auxiliary heat insulation auxiliary agent, the preservative and the mixed material, and stirring for 2.5-3.5 hours to obtain the waterproof adhesive applied to the underground heat transfer pipe;

the waterproof adhesive applied to the underground heat transfer pipe comprises, by mass, 30-50 parts of acrylic emulsion, 10-25 parts of cement, 10-20 parts of nano calcium carbonate, 20-25 parts of ethylene glycol, 20-25 parts of polyvinyl alcohol, 10-25 parts of phenol, 5-8 parts of urea, 5-10 parts of auxiliary heat insulation auxiliary agents, 1-5 parts of acetic acid and 1-5 parts of preservatives.

The invention has the beneficial effects that:

the waterproof glue disclosed by the invention is added with the preservative, so that the waterproof glue is good in corrosion resistance effect and excellent in flexibility, and can resist the high-frequency vibration of a water pipe without cracking or falling off. Through detection: after 5h, the bonding strength reaches 20Mpa, and the water resistance is good. After bonding, the materials are soaked in 50 ℃ water for 1h, and the bonding strength is 18 Mpa.

Detailed Description

The first embodiment is as follows: the embodiment is a waterproof adhesive applied to an underground heat transfer pipe, which consists of 30 to 50 parts by weight of acrylic emulsion, 10 to 25 parts by weight of cement, 10 to 20 parts by weight of nano calcium carbonate, 20 to 25 parts by weight of ethylene glycol, 20 to 25 parts by weight of polyvinyl alcohol, 10 to 25 parts by weight of phenol, 5 to 8 parts by weight of urea, 5 to 10 parts by weight of auxiliary heat insulation auxiliary agent, 1 to 5 parts by weight of acetic acid and 1 to 5 parts by weight of preservative;

the auxiliary heat insulation auxiliary agent is silicon dioxide;

the preservative consists of 26 to 60 parts by mass of thermosetting phenolic resin, 15 to 41 parts by mass of decylamine, 8 to 21 parts by mass of phenolic resin and 28 to 60 parts by mass of polyimide.

The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: the waterproof adhesive applied to the underground heat transfer pipe is composed of 30 parts by weight of acrylic emulsion, 10 parts by weight of cement, 10 parts by weight of nano calcium carbonate, 20 parts by weight of ethylene glycol, 20 parts by weight of polyvinyl alcohol, 10 parts by weight of phenol, 5 parts by weight of urea, 5 parts by weight of auxiliary heat insulation auxiliary agent, 1 part by weight of acetic acid and 1 part by weight of preservative. The rest is the same as the first embodiment.

The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the waterproof adhesive applied to the underground heat transfer pipe is composed of, by weight, 50 parts of acrylic emulsion, 25 parts of cement, 20 parts of nano calcium carbonate, 25 parts of ethylene glycol, 25 parts of polyvinyl alcohol, 25 parts of phenol, 8 parts of urea, 10 parts of an auxiliary heat insulation auxiliary agent, 5 parts of acetic acid and 5 parts of a preservative. The others are the same as in the first or second embodiment.

The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: the waterproof adhesive applied to the underground heat transfer pipe is composed of, by weight, 40 parts of acrylic emulsion, 20 parts of cement, 15 parts of nano calcium carbonate, 22 parts of ethylene glycol, 22 parts of polyvinyl alcohol, 20 parts of phenol, 6 parts of urea, 8 parts of an auxiliary heat insulation auxiliary agent, 4 parts of acetic acid and 3 parts of a preservative. The rest is the same as one of the first to third embodiments.

The fifth concrete implementation mode: the fourth difference between this embodiment and the specific embodiment is that: the preservative consists of 30 parts of thermosetting phenolic resin, 30 parts of decylamine, 15 parts of phenolic resin and 40 parts of polyimide in mass percentage. The rest is the same as the fourth embodiment.

The sixth specific implementation mode: the embodiment is a preparation method of waterproof glue applied to an underground heat transfer pipe in the first embodiment, and the preparation method comprises the following specific processes:

firstly, adding polyvinyl alcohol and ethylene glycol into phenol, heating and dissolving, then adding acrylic emulsion, urea and acetic acid, stirring uniformly, and stirring and reacting for 0.5-1.5 h to prepare a mixed material;

fully mixing the cement, the nano calcium carbonate, the auxiliary heat insulation auxiliary agent, the preservative and the mixed material, and stirring for 2.5-3.5 hours to obtain the waterproof adhesive applied to the underground heat transfer pipe;

the waterproof adhesive applied to the underground heat transfer pipe comprises, by mass, 30-50 parts of acrylic emulsion, 10-25 parts of cement, 10-20 parts of nano calcium carbonate, 20-25 parts of ethylene glycol, 20-25 parts of polyvinyl alcohol, 10-25 parts of phenol, 5-8 parts of urea, 5-10 parts of auxiliary heat insulation auxiliary agents, 1-5 parts of acetic acid and 1-5 parts of preservatives.

The seventh embodiment: the sixth embodiment is different from the sixth embodiment in that: the heating temperature in the first step is 60 ℃. The rest is the same as the sixth embodiment.

The specific implementation mode is eight: the sixth embodiment is different from the sixth embodiment in that: and stirring and reacting for 1h in the first step. The rest is the same as the sixth embodiment.

The specific implementation method nine: the sixth embodiment is different from the sixth embodiment in that: stirring for 3 hours in the second step. The rest is the same as the sixth embodiment.

The invention was verified with the following tests:

test one: the test is a preparation method of waterproof glue applied to an underground heat transfer pipe, and the specific process is as follows:

firstly, adding polyvinyl alcohol and ethylene glycol into phenol, heating and dissolving, then adding acrylic emulsion, urea and acetic acid, stirring uniformly, and stirring and reacting for 1h to obtain a mixed material;

fully mixing the cement, the nano calcium carbonate, the auxiliary heat insulation auxiliary agent, the preservative and the mixed material, and stirring for 3 hours to obtain the waterproof adhesive applied to the underground heat transfer pipe;

the waterproof adhesive applied to the underground heat transfer pipe comprises, by mass, 40 parts of acrylic emulsion, 20 parts of cement, 15 parts of nano calcium carbonate, 22 parts of ethylene glycol, 22 parts of polyvinyl alcohol, 20 parts of phenol, 7 parts of urea, 8 parts of an auxiliary heat insulation auxiliary agent, 4 parts of acetic acid and 3 parts of a preservative.

The preservative is added into the waterproof glue for the test, so that the waterproof glue has a good corrosion prevention effect and excellent flexibility, can resist the high-frequency vibration of a water pipe, and cannot crack or fall off. Through detection: after 5h, the bonding strength reaches 20Mpa, and the water resistance is good. After bonding, the materials are soaked in 50 ℃ water for 1h, and the bonding strength is 18 Mpa.