阅读说明：本技术 一种新型聚氨酯发泡材料 (Novel polyurethane foam material ) 是由 林斌 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种新型聚氨酯发泡材料,包括按重量份数计的如下组分：聚醚多元醇80-120份,异氰酸酯30-60份,交联剂1-3份,发泡剂1-3份,表面活性剂5-10份,催化剂10-20份,功能助剂8-12份,水40-60份。本发明制造出的发泡材料具有泡孔分布均匀、弹性良好、柔软性好等优点。(The invention discloses a novel polyurethane foam material which comprises the following components in parts by weight: 80-120 parts of polyether polyol, 30-60 parts of isocyanate, 1-3 parts of a cross-linking agent, 1-3 parts of a foaming agent, 5-10 parts of a surfactant, 10-20 parts of a catalyst, 8-12 parts of a functional assistant and 40-60 parts of water. The foaming material prepared by the invention has the advantages of uniform foam hole distribution, good elasticity, good flexibility and the like.)

1. The novel polyurethane foam material is characterized by comprising the following components in parts by weight: 80-120 parts of polyether polyol, 30-60 parts of isocyanate, 1-3 parts of a cross-linking agent, 1-3 parts of a foaming agent, 5-10 parts of a surfactant, 10-20 parts of a catalyst, 8-12 parts of a functional assistant and 40-60 parts of water.

2. The novel polyurethane foam material according to claim 1, further comprising 20 to 30 parts of a flame retardant.

3. The novel polyurethane foam material according to claim 1, wherein the isocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethylbiphenyl diisocyanate.

4. The novel polyurethane foam material according to claim 1, wherein the polyether polyol is produced by the following process: reacting polyhydric alcohol containing more than two hydroxyl groups with ethylene oxide by using the action of an alkaline catalyst to obtain a first compound; reacting the first compound with propylene oxide to obtain a second compound by using cyanide catalysis; and reacting the second compound with ethylene oxide and chromium acetate to obtain the polyether polyol.

5. The novel polyurethane foam material as claimed in claim 1, wherein the catalyst is one or more of lithium alkoxide, trimethylhydroxyethylpropylenediamine, dimethylethanolamine, dimethylpiperazine, dimorpholinodiethylether, and triethylenediamine.

6. The novel polyurethane foam material according to claim 1, wherein the functional auxiliary is at least one of an antioxidant, a UV absorber, a light stabilizer, an antibacterial agent, a mildewproof agent, an antistatic agent, a foam stabilizer and a nucleating agent.

7. The novel polyurethane foam material according to claim 1, wherein the active agent is polymethylsiloxane.

8. The novel polyurethane foam material according to claim 1, wherein the crosslinking agent is at least one of dicumyl peroxide and di- (t-butylperoxyisopropyl) benzene.

9. Novel polyurethane foam according to claim 1, wherein the blowing agent is at least one of n-pentane, isopentane, cyclopentane, n-butane, azodicarbonamide.

Technical Field

The invention relates to the field of polyurethane materials, in particular to a novel polyurethane foaming material.

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, the main function of the soft polyurethane foam is buffering, and the soft polyurethane foam is commonly used for sofa furniture, pillows, cushions, toys, clothes and sound insulation linings.

The polymer polyol, the catalyst, the expanding stage, the coupling agent, the foaming agent and the like are uniformly mixed and then poured into a mold to be subjected to reaction and foaming to obtain the polyurethane foam material, foaming and chain growth or crosslinking reaction are simultaneously carried out in a reaction system in the preparation process, the controllability of the foaming process is poor, the problems of uneven cell distribution and difficult control of cell size are easily caused, and the cast polyurethane foam material has a defect area, poor elasticity, high compression permanent deformation and poor shrinkage performance.

Disclosure of Invention

The invention aims to solve the technical problem of providing a novel polyurethane foaming material which has the advantages of uniform bubble distribution, good elasticity, good flexibility and the like.

In order to solve the technical problems, the invention provides a novel polyurethane foam material which is characterized by comprising the following components in parts by weight: 80-120 parts of polyether polyol, 30-60 parts of isocyanate, 1-3 parts of a cross-linking agent, 1-3 parts of a foaming agent, 5-10 parts of a surfactant, 10-20 parts of a catalyst, 8-12 parts of a functional assistant and 40-60 parts of water.

Further, the flame retardant also comprises 20-30 parts of a flame retardant.

Further, the isocyanate is selected from one or a combination of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

Further, the preparation method of the polyether polyol comprises the following steps: reacting polyhydric alcohol containing more than two hydroxyl groups with ethylene oxide by using the action of an alkaline catalyst to obtain a first compound; reacting the first compound with propylene oxide to obtain a second compound by using cyanide catalysis; and reacting the second compound with ethylene oxide and chromium acetate to obtain the polyether polyol.

Further, the catalyst is formed by mixing one or more of lithium alkoxide, trimethyl hydroxyethyl propane diamine, dimethyl ethanolamine, dimethyl piperazine, dimorpholine diethyl ether and triethylene diamine.

Further, the functional auxiliary agent is at least one of an antioxidant, a UV absorbent, a light stabilizer, an antibacterial agent, a mildew preventive, an antistatic agent, a foam stabilizer and a nucleating agent.

Further, the active agent is polymethylsiloxane.

Further, the cross-linking agent is at least one of dicumyl peroxide and di- (tert-butyl peroxyisopropyl) benzene.

Further, the foaming agent is at least one of n-pentane, isopentane, cyclopentane, n-butane and azodicarbonamide.

The invention has the beneficial effects that: the polyether polyol and the isocyanate are uniformly foamed under the action of the crosslinking agent, the foaming agent and the like, and the prepared material has good elasticity and excellent comprehensive performance.

Drawings

FIG. 1 is a graph of experimental data for 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:

one embodiment of the novel polyurethane foam material comprises the following components in parts by weight: 80 parts of polyether polyol, 30 parts of isocyanate, 1 part of a crosslinking agent, 1 part of a foaming agent, 5 parts of a surfactant, 10 parts of a catalyst, 8 parts of a functional assistant and 40 parts of water.

The flame retardant also comprises 20 parts of flame retardant, and the flame retardant has the function of decomposing into non-combustible substances in an endothermic way at or close to the ignition temperature; can react with foam combustion products to generate non-flammable substances; substances which terminate the free radical oxidation reaction of the foam may be decomposed.

The isocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

The preparation method of the polyether polyol comprises the following steps: reacting polyhydric alcohol containing more than two hydroxyl groups with ethylene oxide by using the action of an alkaline catalyst to obtain a first compound; reacting the first compound with propylene oxide to obtain a second compound by using cyanide catalysis; and reacting the second compound with ethylene oxide and chromium acetate to obtain the polyether polyol.

The catalyst is one or more of alkoxy lithium, trimethyl hydroxyethyl propane diamine, dimethyl ethanolamine, dimethyl piperazine, dimorpholine diethyl ether and triethylene diamine;

the functional auxiliary agent is at least one of an antioxidant, a UV absorbent, a light stabilizer, an antibacterial agent, a mildew inhibitor, an antistatic agent, a foam stabilizer and a nucleating agent;

the active agent is polymethyl siloxane;

the cross-linking agent is at least one of dicumyl peroxide and di- (tert-butyl peroxyisopropyl) benzene;

the foaming agent is at least one of n-pentane, isopentane, cyclopentane, n-butane and azodicarbonamide.

The experimental data of this example are shown in FIG. 1.

Example two:

one embodiment of the novel polyurethane foam material comprises the following components in parts by weight: 120 parts of polyether polyol, 60 parts of isocyanate, 3 parts of a crosslinking agent, 3 parts of a foaming agent, 10 parts of a surfactant, 20 parts of a catalyst, 12 parts of a functional assistant and 60 parts of water.

30 parts of flame retardant is also included, and the flame retardant has the function of decomposing into non-combustible substances in an endothermic way at or close to the ignition temperature; can react with foam combustion products to generate non-flammable substances; substances which terminate the free radical oxidation reaction of the foam may be decomposed.

The isocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

The preparation method of the polyether polyol comprises the following steps: reacting polyhydric alcohol containing more than two hydroxyl groups with ethylene oxide by using the action of an alkaline catalyst to obtain a first compound; reacting the first compound with propylene oxide to obtain a second compound by using cyanide catalysis; and reacting the second compound with ethylene oxide and chromium acetate to obtain the polyether polyol.

The catalyst is one or more of alkoxy lithium, trimethyl hydroxyethyl propane diamine, dimethyl ethanolamine, dimethyl piperazine, dimorpholine diethyl ether and triethylene diamine;

the functional auxiliary agent is at least one of an antioxidant, a UV absorbent, a light stabilizer, an antibacterial agent, a mildew inhibitor, an antistatic agent, a foam stabilizer and a nucleating agent;

the active agent is polymethyl siloxane;

the cross-linking agent is at least one of dicumyl peroxide and di- (tert-butyl peroxyisopropyl) benzene;

the foaming agent is at least one of n-pentane, isopentane, cyclopentane, n-butane and azodicarbonamide.

The experimental data of this example are shown in FIG. 1.

Example three:

one embodiment of the novel polyurethane foam material comprises the following components in parts by weight: 100 parts of polyether polyol, 45 parts of isocyanate, 2 parts of a cross-linking agent, 2 parts of a foaming agent, 7 parts of a surfactant, 15 parts of a catalyst, 10 parts of a functional assistant and 50 parts of water.

The flame retardant also comprises 25 parts of flame retardant, and the flame retardant has the function of decomposing into non-combustible substances in an endothermic way at or close to the ignition temperature; can react with foam combustion products to generate non-flammable substances; substances which terminate the free radical oxidation reaction of the foam may be decomposed.

The isocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, p-phenylene diisocyanate and dimethyl biphenyl diisocyanate.

The preparation method of the polyether polyol comprises the following steps: reacting polyhydric alcohol containing more than two hydroxyl groups with ethylene oxide by using the action of an alkaline catalyst to obtain a first compound; reacting the first compound with propylene oxide to obtain a second compound by using cyanide catalysis; and reacting the second compound with ethylene oxide and chromium acetate to obtain the polyether polyol.

The catalyst is one or more of alkoxy lithium, trimethyl hydroxyethyl propane diamine, dimethyl ethanolamine, dimethyl piperazine, dimorpholine diethyl ether and triethylene diamine;

the functional auxiliary agent is at least one of an antioxidant, a UV absorbent, a light stabilizer, an antibacterial agent, a mildew inhibitor, an antistatic agent, a foam stabilizer and a nucleating agent;

the active agent is polymethyl siloxane;

the cross-linking agent is at least one of dicumyl peroxide and di- (tert-butyl peroxyisopropyl) benzene;

the foaming agent is at least one of n-pentane, isopentane, cyclopentane, n-butane and azodicarbonamide.

The experimental data of this example are shown in FIG. 1.

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.