阅读说明：本技术 一种大豆植物胶黏剂的制备工艺 (Preparation process of soybean plant adhesive ) 是由 马冬青 于 2021-10-11 设计创作，主要内容包括：本发明涉及一种大豆植物胶黏剂的制备工艺,所述一种大豆植物胶黏剂由以下重量份的原料组成：蒸馏水200-270份、山梨醇50-70份、低变性大豆蛋白粉30-40份、三聚氰胺10-18份、氢氧化钠12-16份、乙二醇8-12份、有机溶剂3-5份、乳化剂2-6份、乙二胺四乙酸二钠0.1-0.2份、羟基硬脂酸酯0.1-0.2份。本发明具有如下优点：在生产过程中无脲醛等氨类物质的添加,同时也无甲醛添加,制备的胶黏剂无“氨污染”和“甲醛污染”,达到环保性能和耐水性能良好的目的,添加有羟基硬脂酸酯来用于做抑制剂、消泡剂、使大豆植物胶黏剂的稳定性更好,添加有机溶剂来溶解基料,添加有乳化剂能够改善乳浊液中各种构成相之间的表面张力,使大豆植物胶黏剂形成均匀稳定的分散体系或乳浊液的物质。(The invention relates to a preparation process of a soybean plant adhesive, which comprises the following raw materials in parts by weight: 200-270 parts of distilled water, 50-70 parts of sorbitol, 30-40 parts of low-denatured soybean protein powder, 10-18 parts of melamine, 12-16 parts of sodium hydroxide, 8-12 parts of ethylene glycol, 3-5 parts of organic solvent, 2-6 parts of emulsifier, 0.1-0.2 part of ethylene diamine tetraacetic acid disodium and 0.1-0.2 part of hydroxystearate. The invention has the following advantages: in the production process, ammonia substances such as urea-formaldehyde and the like are not added, and formaldehyde is not added at the same time, the prepared adhesive has no ammonia pollution and formaldehyde pollution, the purposes of good environmental protection performance and water resistance are achieved, hydroxystearate is added to be used as an inhibitor and a defoaming agent, so that the stability of the soybean plant adhesive is better, an organic solvent is added to dissolve a base material, and an emulsifier is added to improve the surface tension among various constituent phases in the emulsion, so that the soybean plant adhesive forms a uniform and stable dispersion system or an emulsion substance.)

1. A preparation process of a soybean plant adhesive is characterized by comprising the following steps: the soybean plant adhesive is prepared from the following raw materials in parts by weight: 200-270 parts of distilled water, 50-70 parts of sorbitol, 30-40 parts of low-denatured soybean protein powder, 10-18 parts of melamine, 12-16 parts of sodium hydroxide, 8-12 parts of ethylene glycol, 3-5 parts of organic solvent, 2-6 parts of emulsifier, 0.1-0.2 part of ethylene diamine tetraacetic acid disodium and 0.1-0.2 part of hydroxystearate.

2. The preparation process of the soybean plant adhesive according to claim 1, wherein the preparation process comprises the following steps: the weight percentage content of protein in the low-denatured soybean protein powder is more than or equal to 50 percent.

3. The preparation process of the soybean plant adhesive according to claim 1, wherein the preparation process comprises the following steps: the organic solvent is one or a combination of ethyl acetate, acetone, formic acid, acetic acid and ethanol.

4. The preparation process of the soybean plant adhesive according to claim 1, which is characterized by comprising the following steps: the emulsifier is one or more of diphenyl ethyl complex phenol polyoxyethylene ether, diglycerol polypropylene glycol ether, benzyl dimethyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether phosphate and sodium dipentyl succinate.

5. The preparation process of the soybean plant adhesive according to claim 1, wherein the preparation process comprises the following steps: the preparation method comprises the following preparation steps:

weighing distilled water, sorbitol, low-denatured soybean protein powder, melamine, sodium hydroxide, ethylene glycol, an organic solvent, an emulsifier, disodium ethylene diamine tetraacetate and hydroxystearate according to a proportion;

adding sodium hydroxide into water, and stirring to obtain a sodium hydroxide solution;

adding sorbitol, melamine and ethylene glycol into three-fourths of the sodium hydroxide solution, stirring, and obtaining a dispersion solution after uniformly stirring;

pouring the dispersion solution into a reaction kettle, setting the temperature of the reaction kettle to be 20-35 ℃, and adding low-denatured soybean protein powder, an emulsifier, an organic solvent, disodium ethylene diamine tetraacetate and hydroxystearate into the reaction kettle;

and fifthly, stirring the mixture in the reaction kettle, slowly adding one fourth of the sodium hydroxide solution left during stirring, and adjusting the pH value to 7-7.5 to obtain the soybean plant adhesive.

Technical Field

The invention relates to the technical field of soybean plant adhesives, in particular to a preparation process of a soybean plant adhesive.

Background

Currently, urea-formaldehyde resins that release formaldehyde are mainly used as adhesives in wood adhesives. With the concern of people on the harm of formaldehyde release to human health of wood boards, some adhesives without formaldehyde, such as soy protein adhesives, begin to attract attention of people. Because the soybean protein adhesive has poor water resistance, the soybean protein adhesive can be used for a wood adhesive to meet the requirement of a use environment on the water resistance only by improving the water resistance, Chinese invention patents of certain modification technical means such as application No. 102719217A (2012.10.10) adopt alkali and a modifier for matching modification, wherein the modifier is preferably urea to improve the water resistance; the modifier used in the chinese invention patent application No. 101629019a (2010.01.20) was also used in urea. Due to the addition of urea in the adhesive, the wood board made of the adhesive with urea added can release ammonia gas, and cause ammonia pollution to the indoor environment. The traditional ammonia pollution is mainly caused by adding urea into concrete as an antifreezing agent and adopting ammonia water as an additive during the finishing of interior decoration materials. Ammonia is a colorless and strong irritant odor gas, which can corrode and irritate the skin tissue in contact with it, absorb water in the skin tissue, denature tissue proteins, saponify tissue fat, and destroy cell membrane structure. In addition to the erosive effects, excessive concentrations can also cause cardiac arrest and respiratory arrest by adverse effects on trigeminal nerve endings. The urea is used as a modifier of the soy protein adhesive, so that ammonia pollution of the use environment of the product can be increased, and human health can be harmed. Meanwhile, some adhesives produced by using petrochemical resources as main raw materials, such as polyamide epichlorohydrin resin (PAE) and the like, as a crosslinking agent of the soy protein adhesive, cannot be biodegradable, and wastes thereof cause environmental pollution.

Disclosure of Invention

The invention aims to provide an environment-friendly soybean plant adhesive.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a preparation process of a soybean plant adhesive comprises the following raw materials in parts by weight: 200-270 parts of distilled water, 50-70 parts of sorbitol, 30-40 parts of low-denatured soybean protein powder, 10-18 parts of melamine, 12-16 parts of sodium hydroxide, 8-12 parts of ethylene glycol, 3-5 parts of organic solvent, 2-6 parts of emulsifier, 0.1-0.2 part of ethylene diamine tetraacetic acid disodium and 0.1-0.2 part of hydroxystearate.

As an improvement, the weight percentage content of protein in the low-denatured soybean protein powder is more than or equal to 50%, and the bonding strength is better.

As an improvement, the organic solvent is one or a combination of more of ethyl acetate, acetone, formic acid, acetic acid and ethanol, and can effectively dissolve the preparation raw materials.

As an improvement, the emulsifier is one or more of diphenyl ethyl complex phenol polyoxyethylene ether, diglycerol polypropylene glycol ether, benzyl dimethyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether phosphate and sodium diamyl succinate, so as to form a uniform and stable emulsion.

As an improvement, the method comprises the following preparation steps:

weighing distilled water, sorbitol, low-denatured soybean protein powder, melamine, sodium hydroxide, ethylene glycol, an organic solvent, an emulsifier, disodium ethylene diamine tetraacetate and hydroxystearate according to a proportion;

adding sodium hydroxide into water, and stirring to obtain a sodium hydroxide solution;

adding sorbitol, melamine and ethylene glycol into three-fourths of the sodium hydroxide solution, stirring, and obtaining a dispersion solution after uniformly stirring;

pouring the dispersion solution into a reaction kettle, setting the temperature of the reaction kettle to be 20-35 ℃, and adding low-denatured soybean protein powder, an emulsifier, an organic solvent, disodium ethylene diamine tetraacetate and hydroxystearate into the reaction kettle;

and fifthly, stirring the mixture in the reaction kettle, slowly adding one fourth of the sodium hydroxide solution left during stirring, and adjusting the pH value to 7-7.5 to obtain the soybean plant adhesive.

The invention has the following advantages: in the production process, ammonia substances such as urea-formaldehyde and the like are not added, and formaldehyde is not added at the same time, the prepared adhesive has no ammonia pollution and formaldehyde pollution, and achieves the purpose of good environmental protection performance and water resistance, the hydroxystearate is added to be used as an inhibitor, a defoaming agent and a chelating agent, so that the stability of the soybean plant adhesive is better, the organic solvent is added to dissolve the base material, and the emulsifier is added to improve the surface tension among various constituent phases in the emulsion, so that the soybean plant adhesive forms a uniform and stable dispersion system or an emulsion material.

Drawings

Detailed Description

The present invention will be described in further detail with reference to examples.

Example 1

The invention is implemented concretely by using the following raw materials, by weight, 200 parts of distilled water, 50 parts of sorbitol, 30 parts of low-denatured soybean protein powder, 10 parts of melamine, 12 parts of sodium hydroxide, 8 parts of ethylene glycol, 3 parts of organic solvent, 2 parts of emulsifier, 0.1 part of disodium ethylene diamine tetraacetate and 0.1 part of hydroxystearate.

The preparation method comprises the following steps:

weighing distilled water, sorbitol, low-denatured soybean protein powder, melamine, sodium hydroxide, ethylene glycol, an organic solvent, an emulsifier, disodium ethylene diamine tetraacetate and hydroxystearate according to a proportion;

adding sodium hydroxide into water, and stirring to obtain a sodium hydroxide solution;

adding sorbitol, melamine and ethylene glycol into three-fourths of the sodium hydroxide solution, stirring, and obtaining a dispersion solution after uniformly stirring;

pouring the dispersion solution into a reaction kettle, setting the temperature of the reaction kettle to be 20 ℃, and adding low-denatured soybean protein powder, an emulsifier, an organic solvent, disodium ethylene diamine tetraacetate and hydroxystearate into the reaction kettle;

and fifthly, stirring the mixture in the reaction kettle, slowly adding one fourth of the sodium hydroxide solution left during stirring, and adjusting the pH value to 7-7.5 to obtain the soybean plant adhesive.

Example 2

In the specific implementation of the invention, the raw materials comprise, by weight, 235 parts of distilled water, 50 parts of sorbitol, 40 parts of low-denatured soybean protein powder, 10 parts of melamine, 12 parts of sodium hydroxide, 12 parts of ethylene glycol, 5 parts of an organic solvent, 4 parts of an emulsifier, 0.1 part of disodium ethylene diamine tetraacetate and 0.1 part of hydroxystearate.

The preparation method comprises the following steps:

weighing distilled water, sorbitol, low-denatured soybean protein powder, melamine, sodium hydroxide, ethylene glycol, an organic solvent, an emulsifier, disodium ethylene diamine tetraacetate and hydroxystearate according to a proportion;

adding sodium hydroxide into water, and stirring to obtain a sodium hydroxide solution;

adding sorbitol, melamine and ethylene glycol into three-fourths of the sodium hydroxide solution, stirring, and obtaining a dispersion solution after uniformly stirring;

pouring the dispersion solution into a reaction kettle, setting the temperature of the reaction kettle to be 25 ℃, and adding low-denatured soybean protein powder, an emulsifier, an organic solvent, disodium ethylene diamine tetraacetate and hydroxystearate into the reaction kettle;

and fifthly, stirring the mixture in the reaction kettle, slowly adding one fourth of the sodium hydroxide solution left during stirring, and adjusting the pH value to 7-7.5 to obtain the soybean plant adhesive.

Example 3

In the specific implementation of the invention, the raw materials comprise, by weight, 270 parts of distilled water, 70 parts of sorbitol, 40 parts of low-denatured soybean protein powder, 18 parts of melamine, 16 parts of sodium hydroxide, 12 parts of ethylene glycol, 5 parts of an organic solvent, 6 parts of an emulsifier, 0.1 part of disodium ethylene diamine tetraacetate and 0.1 part of hydroxystearate.

The preparation method comprises the following steps:

weighing distilled water, sorbitol, low-denatured soybean protein powder, melamine, sodium hydroxide, ethylene glycol, an organic solvent, an emulsifier, disodium ethylene diamine tetraacetate and hydroxystearate according to a proportion;

adding sodium hydroxide into water, and stirring to obtain a sodium hydroxide solution;

adding sorbitol, melamine and ethylene glycol into three-fourths of the sodium hydroxide solution, stirring, and obtaining a dispersion solution after uniformly stirring;

pouring the dispersion solution into a reaction kettle, setting the temperature of the reaction kettle to be 35 ℃, and adding low-denatured soybean protein powder, an emulsifier, an organic solvent, disodium ethylene diamine tetraacetate and hydroxystearate into the reaction kettle;

and fifthly, stirring the mixture in the reaction kettle, slowly adding one fourth of the sodium hydroxide solution left during stirring, and adjusting the pH value to 7-7.5 to obtain the soybean plant adhesive.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.