阅读说明：本技术 一种耐热浸胶液的调配方法 (Blending method of heat-resistant gum dipping solution ) 是由 崔振东 于 2020-05-07 设计创作，主要内容包括：本发明公开了一种耐热浸胶液的调配方法,其特征在于：包括如下步骤：1)、调配间甲液：依次将软水、催化剂、有机硅改性丙烯酸树脂、甲醛加入到第一反应釜中混合、搅拌,搅拌过程中保持溶液温度在25～35℃；2)、调配乳胶液：依次将软水、催化剂、丁吡乳胶加入到第二反应釜中混合、搅拌,搅拌过程中保持温度在15～20℃；3)、将间甲液与乳胶液混合、搅拌,搅拌过程中保持温度在10～20℃；4)、取样检测：检测溶液固含量在21％～22％之间。通过有机硅改性丙烯树脂提高浸胶液的耐热性,通过丁吡乳胶增加帆布与橡胶之间的粘合能力。(The invention discloses a blending method of heat-resistant gum dipping solution, which is characterized by comprising the following steps: the method comprises the following steps: 1) preparing the meta-liquid: sequentially adding soft water, a catalyst, organic silicon modified acrylic resin and formaldehyde into a first reaction kettle for mixing and stirring, wherein the temperature of a solution is kept at 25-35 ℃ in the stirring process; 2) and preparing latex solution: sequentially adding soft water, a catalyst and the butyl pyridine latex into a second reaction kettle for mixing and stirring, and keeping the temperature at 15-20 ℃ in the stirring process; 3) mixing and stirring the meta-A solution and the latex solution, and keeping the temperature at 10-20 ℃ in the stirring process; 4) and sampling and detecting: the solid content of the detection solution is between 21 and 22 percent. The heat resistance of the gum dipping solution is improved through the organosilicon modified acrylic resin, and the adhesive capacity between the canvas and the rubber is improved through the butyl pyridine latex.)

1. A blending method of heat-resistant gum dipping solution is characterized in that: the method comprises the following steps:

step one, preparing a meta-liquid: pouring soft water into a first reaction kettle, raising the temperature of the water to 25-35 ℃, adding a catalyst into the soft water, and stirring at a stirring speed of 1000-1200 rad/min for 5-10 min; then adding the organic silicon modified acrylic resin, and stirring at a stirring speed of 1000-1300 rad/min for 20-25 min, wherein the temperature of the solution is kept at 25-35 ℃ in the stirring process; then adding formaldehyde, and stirring at the stirring speed of 1200-1500 rad/min for 20-30 min, wherein the temperature of the solution is kept at 25-35 ℃ in the stirring process;

step two, blending latex solution: pouring soft water into a second reaction kettle, adding a catalyst into the soft water, stirring at a stirring speed of 1000-1200 rad/min for 15-20 min, and heating to 15-20 ℃; then adding the butyl pyridine latex, stirring for 20-30 min at the stirring speed of 1200-1500 rad/min, and keeping the temperature at 15-20 ℃ in the stirring process;

step three, cooling the methyl acetate solution in the first reaction kettle to 15-20 ℃, then pouring the methyl acetate solution into a second reaction kettle, mixing the methyl acetate solution and the latex solution, then stirring at a stirring speed of 1500-1800 rad/min for 25-30 min, keeping the temperature at 10-20 ℃ during stirring, and then standing for 30 min;

step four, sampling detection: the solid content of the detection solution is between 21 and 22 percent.

2. The blending method of the heat-resistant dipping solution according to claim 1, characterized in that: the feed amount of each component in the meta-nail liquid is as follows according to the parts by weight: soft water: 450-550 parts of catalyst: 2.5-3 parts of organic modified propionic acid resin: 100-110 parts of formaldehyde: 37-40 parts.

3. The blending method of the heat-resistant dipping solution according to claim 2, characterized in that: the emulsion comprises the following components in parts by weight: soft water: 400-500 parts of catalyst: 0.5-1 part of butyl pyridine latex: 750-830 parts.

4. The method for preparing a heat-resistant dipping solution according to claim 1, 2 or 3, wherein the method comprises the following steps: the catalyst is caustic soda flakes.

5. The method for preparing a heat-resistant dipping solution according to claim 1, 2 or 3, wherein the method comprises the following steps: the concentration of formaldehyde is 35-38%.

6. The method for preparing a heat-resistant dipping solution according to claim 1, 2 or 3, wherein the method comprises the following steps: the pH value of the meta-nail liquid is 7-8.

7. The method for preparing a heat-resistant dipping solution according to claim 1, 2 or 3, wherein the method comprises the following steps: the weight ratio of the meta-A solution to the latex solution is 1: 1.7-1: 2.5.

Technical Field

The invention relates to a preparation method of a heat-resistant gum dipping solution.

Background

In the process of manufacturing the canvas conveying belt, the performance of the canvas conveying belt is improved by soaking the canvas conveying belt in a dipping solution, and then rubber is adhered on the canvas conveying belt. The dipping solution in the market at present is prepared by mixing lactam closed isocyanate and epoxy resin. Isocyanate in the dipping solution can generate self-polymerization reaction under a high-temperature environment to generate a polyurethane layer, and rubber adhered to the canvas is subjected to chemical reaction with amine substances after high-temperature vulcanization to damage an adhesive layer between the rubber and the canvas, so that the service life is reduced.

Disclosure of Invention

The invention aims to provide a preparation method of a heat-resistant dipping solution capable of improving the heat resistance of the dipping solution.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a blending method of heat-resistant dipping solution comprises the following steps:

step one, preparing a meta-liquid: pouring soft water into a first reaction kettle, raising the temperature of the water to 25-35 ℃, adding a catalyst into the soft water, and stirring at a stirring speed of 1000-1200 rad/min for 5-10 min; then adding the organic silicon modified acrylic resin, and stirring at a stirring speed of 1000-1300 rad/min for 20-25 min, wherein the temperature of the solution is kept at 25-35 ℃ in the stirring process; then adding formaldehyde, and stirring at the stirring speed of 1200-1500 rad/min for 20-30 min, wherein the temperature of the solution is kept at 25-35 ℃ in the stirring process;

step two, blending latex solution: pouring soft water into a second reaction kettle, adding a catalyst into the soft water, stirring at a stirring speed of 1000-1200 rad/min for 15-20 min, and heating to 15-20 ℃; then adding the butyl pyridine latex, stirring for 20-30 min at the stirring speed of 1200-1500 rad/min, and keeping the temperature at 15-20 ℃ in the stirring process;

step three, cooling the methyl acetate solution in the first reaction kettle to 15-20 ℃, then pouring the methyl acetate solution into a second reaction kettle, mixing the methyl acetate solution and the latex solution, then stirring at a stirring speed of 1500-1800 rad/min for 25-30 min, keeping the temperature at 10-20 ℃ during stirring, and then standing for 30 min;

step four, sampling detection: the solid content of the detection solution is between 21 and 22 percent.

Further, the blending method of the heat-resistant gum dipping solution comprises the following steps of: soft water: 450-550 parts of catalyst: 2.5-3 parts of organic modified propionic acid resin: 100-110 parts of formaldehyde: 37-40 parts.

Further, according to the blending method of the heat-resistant gum dipping solution, the feeding amount of each component in the latex solution is as follows according to parts by mass: soft water: 400-500 parts of catalyst: 0.5-1 part of butyl pyridine latex: 750-830 parts.

Further, in the preparation method of the heat-resistant dipping solution, the catalyst is caustic soda flakes.

Further, in the blending method of the heat-resistant gum dipping solution, the concentration of formaldehyde is 35% to 38%.

Further, in the blending method of the heat-resistant gum dipping solution, the pH value of the meta-formaldehyde solution is 7-8.

Further, according to the blending method of the heat-resistant gum dipping solution, the weight ratio of the meta-formaldehyde solution to the latex solution is 1: 1.7-1: 2.5.

the organic silicon modified acrylic resin can improve the heat resistance of the dipping solution, and the butyl pyridine latex can improve the adhesive capacity between the canvas and the rubber.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples.

The invention relates to a preparation method of a heat-resistant gum dipping solution, which comprises the following steps:

step one, preparing a meta-liquid: pouring 450-550 parts of soft water into a first reaction kettle, raising the temperature of the water to 25-35 ℃, adding 2.5-3 parts of caustic soda flakes into the soft water as a catalyst, and stirring at a stirring speed of 1000-1200 rad/min for 5-10 min; then adding 100-110 parts of organic silicon modified acrylic resin, stirring at a stirring speed of 1000-1300 rad/min for 20-25 min, and keeping the temperature of the solution at 25-35 ℃ in the stirring process; then adding 37-40 parts of 35% -38% formaldehyde, stirring at a stirring speed of 1200-1500 rad/min for 20-30 min, and keeping the temperature of the solution at 25-35 ℃ in the stirring process to obtain a pH value of 7-8 of the prepared methyl carbamate solution;

step two, blending latex solution: pouring 400-500 parts of soft water into a second reaction kettle, adding 0.5-1 part of caustic soda flakes into the soft water as a catalyst, stirring at a stirring speed of 1000-1200 rad/min for 15-20 min, and heating to 15-20 ℃; then adding 750-830 parts of butyl pyridine latex, stirring at the stirring speed of 1200-1500 rad/min for 20-30 min, and keeping the temperature at 15-20 ℃ in the stirring process;

step three, cooling the meta-A solution in the first reaction kettle to 15-20 ℃, then pouring the meta-A solution into a second reaction kettle, mixing the meta-A solution and the latex solution, wherein the weight ratio of the meta-A solution to the latex solution is 1.17-1.25, then stirring at a stirring speed of 1500-1800 rad/min for 25-30 min, keeping the temperature at 10-20 ℃ in the stirring process, and then standing for 30 min;

step four, sampling detection: the solid content of the detection solution is between 21 and 22 percent.

In the preparation process, in different embodiments, the feeding amount of each component in the nail enamel solution and the latex solution is as follows: