阅读说明：本技术 一种新型聚氨酯泡沫稳定剂的制备方法 (Preparation method of novel polyurethane foam stabilizer ) 是由 林斌 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种新型聚氨酯泡沫稳定剂的制备方法,所述新型聚氨酯泡沫稳定剂的组成为：质量份数为20-30份的聚氧乙烯、20-30份的环氧烷烃,1-2份的混合烯醇,10-20份的混合硅氧烷,1-2份的催化剂,1-2份的阻聚剂,6-15份的带水剂；制备方法如下：(1)将聚氧乙烯、混合烯醇、催化剂加入反应釜之中进行混合,将温度升高至100-120℃,反应时间为5-10小时；(2)将环氧烷烃、混合硅氧烷、催化剂加入另一个反应釜中进行混合,将将温度升高至40-70℃,反应时间为3-7小时；(3)将步骤1和步骤2中得到的反应物同时加入反应釜中进行混合,同时加入带水剂、阻聚剂和催化剂,升温至130-150℃,反应时间12-20小时。本发明用量少,产品质量稳定,成本低,且反应活性强、性能优异。(The invention discloses a preparation method of a novel polyurethane foam stabilizer, which comprises the following steps: 20-30 parts of polyoxyethylene, 20-30 parts of alkylene oxide, 1-2 parts of mixed enol, 10-20 parts of mixed siloxane, 1-2 parts of catalyst, 1-2 parts of polymerization inhibitor and 6-15 parts of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 100 ℃ and 120 ℃, and reacting for 5-10 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 40-70 ℃, and reacting for 3-7 hours; (3) and (3) adding the reactants obtained in the step (1) and the step (2) into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to the temperature of 130 ℃ and 150 ℃, and reacting for 12-20 hours. The invention has the advantages of small dosage, stable product quality, low cost, strong reaction activity and excellent performance.)

1. A preparation method of a novel polyurethane foam stabilizer is characterized in that the novel polyurethane foam stabilizer comprises the following components: 20-30 parts of polyoxyethylene, 20-30 parts of alkylene oxide, 1-2 parts of mixed enol, 10-20 parts of mixed siloxane, 1-2 parts of catalyst, 1-2 parts of polymerization inhibitor and 6-15 parts of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 100 ℃ and 120 ℃, and stirring for 5-10 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 40-70 ℃, and stirring for 3-7 hours; (3) and (3) adding the reactants obtained in the step (1) and the step (2) into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to 130 ℃ and 150 ℃, reacting for 12-20 hours, and drying the final product to obtain the foam stabilizer.

2. The method for preparing a novel polyurethane foam stabilizer according to claim 1, wherein the mixed siloxane is prepared by mixing one or more of polyvinylsiloxane, polymethoxysiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane, and the like.

3. The method for preparing a novel polyurethane foam stabilizer according to claim 1, wherein the mixed enol is prepared by mixing one or more of C3-C6 enol.

4. The method for preparing a novel polyurethane foam stabilizer according to claim 1, wherein the catalyst comprises an acidic catalyst, and the acidic catalyst is at least one of acidic resin, sulfuric acid, acid clay, and p-toluenesulfonic acid.

5. The method of preparing a novel polyurethane foam stabilizer according to claim 1, wherein said catalyst comprises a basic catalyst, and said basic catalyst is potassium hydroxide or sodium hydroxide.

6. The method for preparing a novel polyurethane foam stabilizer according to claim 1, wherein in step 3, the obtained product is first subjected to a drying operation at a temperature of 50 ℃ before being dried.

7. The method of claim 1 wherein the water-carrying agent is toluene.

Technical Field

The invention relates to the technical field of foam stabilizer preparation, in particular to a preparation method of a novel polyurethane foam stabilizer.

Background

The rigid polyurethane foam is a high molecular polymer prepared by mixing isocyanate and polyether serving as main raw materials through special equipment under the action of various auxiliary agents such as a foaming agent, a catalyst, a flame retardant and the like and performing high-pressure spraying and on-site foaming. Polyurethane has both soft and hard foams. The soft bubbles are in an open pore structure, and the hard bubbles are in a closed pore structure; the soft foam is divided into skinning and non-skinning, and the main function of the polyurethane soft foam is buffering. Polyurethane flexible foams are commonly used in sofa furniture, pillows, cushions, toys, apparel and sound insulation liners.

The stabilizer is also called foam stabilizer, is one of key components in the production formula of polyurethane foam plastics, is a silicon surfactant, and in the foaming process of polyurethane soft foam, the organosilicon surfactant plays a role in reducing the surface tension of the system, emulsifying each component in the formula system, facilitating the formation of foam nucleus and the generation of bubbles and stabilizing foam; and has important influence on the specific gravity, elasticity, foaming multiplying power, cell size, opening rate and the like of the foam.

Disclosure of Invention

The invention aims to solve the technical problem of providing a preparation method of a novel polyurethane foam stabilizer, which has the advantages of small using amount, stable product quality, low cost, strong reactivity and excellent performance.

In order to solve the technical problems, the invention provides a preparation method of a novel polyurethane foam stabilizer, which comprises the following steps: 20-30 parts of polyoxyethylene, 20-30 parts of alkylene oxide, 1-2 parts of mixed enol, 10-20 parts of mixed siloxane, 1-2 parts of catalyst, 1-2 parts of polymerization inhibitor and 6-15 parts of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 100 ℃ and 120 ℃, and stirring for 5-10 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 40-70 ℃, and stirring for 3-7 hours; (3) and (3) adding the reactants obtained in the step (1) and the step (2) into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to 130 ℃ and 150 ℃, reacting for 12-20 hours, and drying the final product to obtain the foam stabilizer.

Further, the mixed siloxane is prepared by mixing one or more of polyvinyl siloxane, polymethoxysiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and the like.

Further, the mixed enol is prepared by mixing one or more of C3-C6 enol and the like.

Further, the catalyst comprises an acidic catalyst, and the acidic catalyst adopts at least one of acidic resin, sulfuric acid, acid clay and p-toluenesulfonic acid.

Further, the catalyst comprises a basic catalyst, and the basic catalyst is potassium hydroxide or sodium hydroxide.

Further, in the step 3, the obtained product is firstly dried before being dried, and the drying temperature is 50 ℃.

Further, the water-carrying agent is toluene.

The invention has the beneficial effects that: the invention provides a stabilizer, which ensures the opening rate of polyurethane foam on the premise of ensuring the mechanical property of the polyurethane foam, utilizes the reaction of polyoxyethylene and mixed enol, hardens the alkylene oxide and the mixed siloxane, ensures excellent foam pores and opening property, has higher elongation, rebound rate and tearing strength, and reduces the indentation hardness to provide softer hand feeling.

Drawings

FIG. 1 is a flow chart of the preparation of the present invention.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The first embodiment is as follows:

referring to fig. 1, in an embodiment of the method for preparing a novel polyurethane foam stabilizer of the present invention, the novel polyurethane foam stabilizer comprises: the catalyst comprises the following components, by mass, 20 parts of polyoxyethylene, 20 parts of alkylene oxide, 1 part of mixed enol, 10 parts of mixed siloxane, 1 part of catalyst, 1 part of polymerization inhibitor and 6 parts of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 100 ℃, and stirring for 5 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 40 ℃, and stirring for 3 hours; (3) adding the reactants obtained in the step 1 and the step 2 into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to 130 ℃, reacting for 12 hours, and drying the final product to obtain a foam stabilizer;

the mixed siloxane is prepared by mixing one or more of polyvinyl siloxane, polymethoxysiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and the like; the mixed enol is prepared by mixing one or more of C3-C6 enol;

the catalyst in the step 1 is an alkaline catalyst, and potassium hydroxide or sodium hydroxide is used; the catalyst in the step 2 is an acidic catalyst, and at least one of acidic resin, sulfuric acid, acidic clay and p-toluenesulfonic acid is adopted.

In step 3, the obtained product is firstly dried before being dried, the drying temperature is 50 ℃, and the water-carrying agent is toluene.

Example two:

referring to fig. 1, in an embodiment of the method for preparing a novel polyurethane foam stabilizer of the present invention, the novel polyurethane foam stabilizer comprises: the catalyst comprises 25 parts by mass of polyoxyethylene, 25 parts by mass of alkylene oxide, 1.5 parts by mass of mixed enol, 15 parts by mass of mixed siloxane, 1.5 parts by mass of catalyst, 1.5 parts by mass of polymerization inhibitor and 10 parts by mass of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 105 ℃, and stirring for 7.5 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 55 ℃, and stirring for 5 hours; (3) adding the reactants obtained in the step 1 and the step 2 into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to 140 ℃, reacting for 16 hours, and drying the final product to obtain a foam stabilizer;

the mixed siloxane is prepared by mixing one or more of polyvinyl siloxane, polymethoxysiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and the like; the mixed enol is prepared by mixing one or more of C3-C6 enol;

the catalyst in the step 1 is an alkaline catalyst, and potassium hydroxide or sodium hydroxide is used; the catalyst in the step 2 is an acidic catalyst, and at least one of acidic resin, sulfuric acid, acidic clay and p-toluenesulfonic acid is adopted.

In step 3, the obtained product is firstly dried before being dried, the drying temperature is 50 ℃, and the water-carrying agent is toluene.

Example three:

referring to fig. 1, in an embodiment of the method for preparing a novel polyurethane foam stabilizer of the present invention, the novel polyurethane foam stabilizer comprises: 30 parts of polyoxyethylene, 30 parts of alkylene oxide, 2 parts of mixed enol, 20 parts of mixed siloxane, 2 parts of catalyst, 2 parts of polymerization inhibitor and 15 parts of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 110 ℃, and stirring for 10 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 70 ℃, and stirring for 7 hours; (3) adding the reactants obtained in the step 1 and the step 2 into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to 150 ℃, reacting for 20 hours, and drying the final product to obtain a foam stabilizer;

the mixed siloxane is prepared by mixing one or more of polyvinyl siloxane, polymethoxysiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and the like; the mixed enol is prepared by mixing one or more of C3-C6 enol;

the catalyst in the step 1 is an alkaline catalyst, and potassium hydroxide or sodium hydroxide is used; the catalyst in the step 2 is an acidic catalyst, and at least one of acidic resin, sulfuric acid, acidic clay and p-toluenesulfonic acid is adopted.

In step 3, the obtained product is firstly dried before being dried, the drying temperature is 50 ℃, and the water-carrying agent is toluene.

Example four:

referring to fig. 1, in an embodiment of the method for preparing a novel polyurethane foam stabilizer of the present invention, the novel polyurethane foam stabilizer comprises: the catalyst comprises the following components, by mass, 20 parts of polyoxyethylene, 20 parts of alkylene oxide, 2 parts of mixed enol, 10 parts of mixed siloxane, 2 parts of catalyst, 2 parts of polymerization inhibitor and 15 parts of water-carrying agent; the preparation method comprises the following steps: (1) adding polyoxyethylene, mixed enol and a catalyst into a reaction kettle for mixing, raising the temperature to 110 ℃, and stirring for 10 hours; (2) adding the alkylene oxide, the mixed siloxane and the catalyst into another reaction kettle for mixing, raising the temperature to 70 ℃, and stirring for 7 hours; (3) adding the reactants obtained in the step 1 and the step 2 into a reaction kettle at the same time for mixing, adding a water-carrying agent, a polymerization inhibitor and a catalyst at the same time, heating to 130 ℃, reacting for 12 hours, and drying the final product to obtain a foam stabilizer;

the mixed siloxane is prepared by mixing one or more of polyvinyl siloxane, polymethoxysiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and the like; the mixed enol is prepared by mixing one or more of C3-C6 enol;

the catalyst in the step 1 is an alkaline catalyst, and potassium hydroxide or sodium hydroxide is used; the catalyst in the step 2 is an acidic catalyst, and at least one of acidic resin, sulfuric acid, acidic clay and p-toluenesulfonic acid is adopted.

In step 3, before drying, the obtained product is firstly dried, the drying temperature is 50 ℃, and the water-carrying agent is toluene

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.