阅读说明：本技术 一种大豆基环保扬尘抑制剂制备方法 (Preparation method of soybean-based environment-friendly dust emission inhibitor ) 是由 宫斌 李永 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种大豆基环保扬尘抑制剂制备方法,包括以下步骤：将2～15重量份的大豆蛋白粉与50重量份的水放入反应容器中,加入氢氧化钠溶液,调节pH到9.5,升温至40～80℃,搅拌1小时,得到大豆蛋白分散液；通入氮气保护,加入1～25重量份丙烯酰胺、乳化剂,30～50重量份的大豆油,充分乳化1小时,在60～80℃向体系滴加引发剂溶液,聚合4～8小时,得到扬尘抑制剂原液；最后,向所述的原液中加入防腐剂,得到大豆蛋白扬尘抑制剂。本发明的有益效果是,原料来源广泛,成本低,无毒无害。(The invention discloses a preparation method of a soybean-based environment-friendly dust inhibitor, which comprises the following steps: putting 2-15 parts by weight of soybean protein powder and 50 parts by weight of water into a reaction container, adding a sodium hydroxide solution, adjusting the pH to 9.5, heating to 40-80 ℃, and stirring for 1 hour to obtain a soybean protein dispersion liquid; introducing nitrogen for protection, adding 1-25 parts by weight of acrylamide, an emulsifier and 30-50 parts by weight of soybean oil, fully emulsifying for 1 hour, dropwise adding an initiator solution into the system at 60-80 ℃, and polymerizing for 4-8 hours to obtain a raise dust inhibitor stock solution; and finally, adding a preservative into the stock solution to obtain the soybean protein dust inhibitor. The invention has the advantages of wide raw material source, low cost, no toxicity and no harm.)

1. A preparation method of a soybean-based environment-friendly dust emission inhibitor is characterized by comprising the following steps:

putting 2-15 parts by weight of soybean protein powder and 50 parts by weight of water into a reaction container, adding a sodium hydroxide solution, adjusting the pH to 9.5, heating to 40-80 ℃, and stirring for 1 hour to obtain a soybean protein dispersion liquid;

introducing nitrogen into the reaction container for protection, then adding 1-25 parts by weight of acrylamide, an emulsifier and 30-50 parts by weight of soybean oil, and fully emulsifying for 1 hour;

thirdly, when the temperature in the reaction container is 60-80 ℃, dropwise adding an initiator solution into a system in the reaction container, and polymerizing for 4-8 hours to obtain a raise dust inhibitor stock solution;

and step four, adding a preservative into the raise dust inhibitor stock solution to obtain the soybean protein raise dust inhibitor.

2. The preparation method of the soybean-based environment-friendly dust emission inhibitor according to claim 1, wherein the method comprises the following steps:

step one, putting 80g of soybean protein powder and 400ml of water into a reaction container, adding 3g of sodium hydroxide solution, adjusting the pH to 9.5, heating to 50 ℃, and stirring for 1 hour to obtain a soybean protein dispersion liquid;

introducing nitrogen into the reaction vessel for protection, then adding 20g of acrylamide, an emulsifier and 300ml of soybean oil, and fully emulsifying for 1 hour;

thirdly, when the temperature in the reaction container is 60-80 ℃, dropwise adding an initiator solution into the system in the reaction container, and polymerizing for 6 hours to obtain a dust inhibitor stock solution;

and step four, adding a preservative into the raise dust inhibitor stock solution to obtain the soybean protein raise dust inhibitor.

3. The method for preparing soybean-based environment-friendly dust suppressant according to claim 1, wherein the soybean protein is one or more of soybean protein isolate, soybean protein concentrate and defatted soybean flour.

4. The preparation method of the soybean-based environment-friendly dust emission inhibitor according to claim 1, wherein the soybean oil is one or more of epoxidized soybean oil, common soybean oil and edible waste soybean oil.

5. The method for preparing soybean-based environment-friendly dust emission inhibitor according to claim 1, wherein the preservative is one or more of sodium benzoate, sodium nitrate, sodium nitrite, sodium sulfite or triethanolamine.

Technical Field

The invention relates to the field of polymer chemistry application, in particular to a preparation method of a soybean-based environment-friendly dust emission inhibitor.

Background

In recent years, environmental pollution has become extremely serious with the development of petrochemical industry. Along with the frequent appearance of haze weather, environmental dust increasingly influences people's daily life. Therefore, the research of the dust inhibitor is particularly important, and the dust inhibitor is widely used and applied, while the traditional polyacrylamide dust inhibitor has the problem of difficult rapid use due to slow dissolution of the polymer.

Soy protein is widely used in the wood industry as an adhesive. In the 40-60 years of the 20 th century, the soybean protein adhesive accounts for more than 85% of the adhesive consumption of the American plywood once, and the soybean adhesive is used for the bonding research of soil dust, and has the advantages of good bonding performance, degradability and the like. However, the use of pure soybean base as the dust suppressant has the problems of large dosage, high cost and difficult large-scale use; moreover, as a dust suppressant used in a large scale, the use of a renewable and environment-friendly dust suppressant must be considered, so that the sustainable development of the environment-friendly dust suppressant becomes a research hotspot of the adhesive industry. However, pure biomass glue affects the market development due to low bonding strength and low anti-microbial degradation capability.

Researches find that the water resistance and the bonding performance of the adhesive can be improved by modifying and denaturing the soybean protein, and the adhesive is applied to various fields. Based on renewable resource biomass adhesive, the soybean-based dust inhibitor has great significance for realizing sustainable development and reducing dust in the air.

Disclosure of Invention

The invention aims to solve the problems and designs a preparation method of a soybean-based environment-friendly dust inhibitor.

The technical scheme of the invention is that a preparation method of a soybean-based environment-friendly raise dust inhibitor comprises the following steps:

putting 2-15 parts by weight of soybean protein powder and 50 parts by weight of water into a reaction container, adding a sodium hydroxide solution, adjusting the pH to 9.5, heating to 40-80 ℃, and stirring for 1 hour to obtain a soybean protein dispersion liquid;

introducing nitrogen into the reaction container for protection, then adding 1-25 parts by weight of acrylamide, an emulsifier and 30-50 parts by weight of soybean oil, and fully emulsifying for 1 hour;

thirdly, when the temperature in the reaction container is 60-80 ℃, dropwise adding an initiator solution into a system in the reaction container, and polymerizing for 4-8 hours to obtain a raise dust inhibitor stock solution;

and step four, adding a preservative into the raise dust inhibitor stock solution to obtain the soybean protein raise dust inhibitor.

Further, the method comprises the steps of:

step one, putting 80g of soybean protein powder and 400ml of water into a reaction container, adding 3g of sodium hydroxide solution, adjusting the pH to 9.5, heating to 50 ℃, and stirring for 1 hour to obtain a soybean protein dispersion liquid;

introducing nitrogen into the reaction vessel for protection, then adding 20g of acrylamide, an emulsifier and 300ml of soybean oil, and fully emulsifying for 1 hour;

thirdly, when the temperature in the reaction container is 60-80 ℃, dropwise adding an initiator solution into the system in the reaction container, and polymerizing for 6 hours to obtain a dust inhibitor stock solution;

and step four, adding a preservative into the raise dust inhibitor stock solution to obtain the soybean protein raise dust inhibitor.

Further, the method comprises the steps of:

step one, 16g of soybean protein powder and 400ml of water are put into a reaction vessel, 3g of sodium hydroxide solution is added, the pH is adjusted to 9.5, the temperature is raised to 50 ℃, and the stirring is carried out for 1 hour, so as to obtain soybean protein dispersion liquid;

introducing nitrogen into the reaction vessel for protection, then adding 20g of acrylamide, an emulsifier and 300ml of soybean oil, and fully emulsifying for 1 hour;

thirdly, when the temperature in the reaction container is 60-80 ℃, dropwise adding an initiator solution into the system in the reaction container, and polymerizing for 6 hours to obtain a dust inhibitor stock solution;

and step four, adding a preservative into the raise dust inhibitor stock solution to obtain the soybean protein raise dust inhibitor.

Further, the method comprises the steps of:

step one, putting 120g of soybean protein powder and 400ml of water into a reaction container, adding 3g of sodium hydroxide solution, adjusting the pH to 9.5, heating to 50 ℃, and stirring for 1 hour to obtain a soybean protein dispersion liquid;

introducing nitrogen into the reaction vessel for protection, then adding 20g of acrylamide, an emulsifier and 300ml of soybean oil, and fully emulsifying for 1 hour;

thirdly, when the temperature in the reaction container is 60-80 ℃, dropwise adding an initiator solution into the system in the reaction container, and polymerizing for 6 hours to obtain a dust inhibitor stock solution;

and step four, adding a preservative into the raise dust inhibitor stock solution to obtain the soybean protein raise dust inhibitor.

The soybean protein is one or more of soybean protein isolate, soybean protein concentrate and defatted soybean flour.

The soybean oil is one or more of epoxidized soybean oil, common soybean oil and edible waste soybean oil.

The preservative is one or more of sodium benzoate, sodium nitrate, sodium nitrite, sodium sulfite or triethanolamine.

Advantageous effects

The preparation method of the soybean-based environment-friendly dust emission inhibitor prepared by the technical scheme of the invention is based on the soybean protein material, has wide raw material sources, and has the advantages of low cost, reproducibility and the like; the prepared soybean protein dust inhibitor does not contain formaldehyde, is nontoxic and environment-friendly, and has low cost and excellent market prospect.

The soybean protein dust suppression solid content is 15-40%, the soybean protein accounts for more than 60% of the solid content of the dust suppressant, and the cost is low; the method develops the low-value by-products such as defatted soybean meal with high added value, and provides a new way for developing the environment-friendly biomass adhesive and recycling industrial by-products.

Drawings

Fig. 1 is a schematic flow chart of a preparation method of a soybean-based environment-friendly dust emission inhibitor.

Detailed Description

The invention will now be described in more detail with reference to the accompanying drawings, which show in figure 1,