阅读说明：本技术 一种阻燃聚氨酯室内护墙及其制备方法 (flame-retardant polyurethane indoor protective wall and preparation method thereof ) 是由 周仁义 于 2019-08-06 设计创作，主要内容包括：本发明公开了一种阻燃聚氨酯室内护墙及其制备方法。一种阻燃聚氨酯室内护墙,包括：表层一,为Al或PET或ASA层中的任意一种；表层二,为Al层；芯层,设于表层一和表层二之间且为发泡聚氨酯层,发泡聚氨酯层与表层一、表层二相互粘结。本发明的阻燃聚氨酯室内护墙与现有技术的相比,具备下述有益效果：1具备优异的力学性能,阻燃性强、与面层的材料粘结力强,对比现有技术中购得的泡沫板力学性能及阻燃性能优异；2由于原材料中发泡剂及阻燃剂之间的配合使用,使得制备出的聚氨酯泡沫板的横截面,由中间到表层一和表层二的密度逐渐增加,在减轻整体的质量的同时,还能使得整体的强度不会受到影响。(the invention discloses a flame-retardant polyurethane indoor protective wall and a preparation method thereof. A flame retardant polyurethane interior retaining wall comprising: the first surface layer is any one of Al, PET or ASA layers; the surface layer II is an Al layer; the core layer is arranged between the first surface layer and the second surface layer and is a foamed polyurethane layer, and the foamed polyurethane layer is mutually bonded with the first surface layer and the second surface layer. Compared with the prior art, the flame-retardant polyurethane indoor protective wall has the following beneficial effects: 1, the foam board has excellent mechanical property, strong flame retardance and strong adhesion with a material of a surface layer, and has excellent mechanical property and flame retardance compared with the foam board purchased in the prior art; 2 because the cooperation between foamer and the fire retardant is used in the raw materials for the cross section of the polyurethane foam board that prepares, by the middle density that increases gradually to top layer one and top layer two, when lightening holistic quality, can also make holistic intensity can not receive the influence.)

1. a flame retardant polyurethane interior retaining wall, comprising:

The surface layer I (1) is any one of an Al layer, a PET layer or an ASA layer;

a second surface layer (2) which is an Al layer;

The core layer is arranged between the first surface layer (1) and the second surface layer (2) and is a foamed polyurethane layer, and the foamed polyurethane layer is mutually bonded with the first surface layer and the second surface layer.

2. a flame retardant polyurethane indoor retaining wall according to claim 1, wherein the core layer (3) comprises a first core layer (31), a second core layer (32) and a third core layer (33), the second core layer (32) is arranged between the first core layer (31) and the third core layer (33), the density of the first core layer (31) is a, the density of the second core layer (32) is b and the density of the third core layer (33) is c, which satisfy the number relationship: b_<a_<c。

3. A method of making a flame retardant polyurethane interior retaining wall of any of claims 1 or 2, comprising the steps of:

1) 20-60 parts of polyether polyol, 20-40 parts of polyester polyol, 0.1-2 parts of a foaming catalyst, 0.5-1 part of a trimerization catalyst, 1-3 parts of silicone oil, 5-15 parts of a flame retardant, 4-6 parts of a foam stabilizer and 7-8 parts of an alkane foaming agent;

2) Putting polyester polyol and polyether polyol into a charging basket, stirring at the rotating speed of 45-65 rpm, adding a trimerization catalyst, silicone oil and a flame retardant, adjusting the rotating speed to be 60-80 rpm, mixing for 15-20 minutes, injecting into a stirring tank of a foaming machine, adding an alkane foaming agent and a foam stabilizer, and adjusting the rotating speed to be 50-70 rpm; the foaming machine uniformly mixes all the components and then injects the mixture into a mould for foaming, curing and curing to obtain a polyurethane layer;

3) carrying out hot-pressing compounding on the surface of the Al or PET or ASA layer and one side of the polyurethane layer through chromizing treatment;

4) and performing chrome chromizing treatment on the surface of the Al, and performing hot-pressing compounding on the other surface of the polyurethane layer to obtain the flame-retardant polyurethane indoor protective wall.

4. the method of preparing a flame retardant polyurethane interior retaining wall of claim 3, wherein: the flame retardant is any one of tris (2-chloroethyl) phosphate, tris (2-chloropropyl) phosphate and ammonium polyphosphate.

5. the method of preparing a flame retardant polyurethane interior retaining wall of claim 3, wherein: the foam stabilizer is any one of B8525, B8545, DC5598 and DC 193.

6. The method of preparing a flame retardant polyurethane interior retaining wall of claim 3, wherein: the trimerization catalyst is one or more of potassium acetate, potassium formate, potassium citrate, potassium caprylate, benzyltriethylammonium chloride and hexadecyldimethylbenzylammonium chloride.

7. the method of preparing a flame retardant polyurethane interior retaining wall of claim 3, wherein: the alkane foaming agent is any one of cyclopentane, n-pentane and isopentane.

8. The method of preparing a flame retardant polyurethane interior retaining wall of claim 3, wherein: the foaming catalyst is any one of pentamethyldiethylenetriamine and dimethylcyclohexylamine.

Technical Field

The invention relates to a polyurethane foam board, in particular to a preparation method of a flame-retardant polyurethane indoor retaining wall.

Background

the foam is a plastic product made of resin and having a large number of micro air holes inside. The general property of the foam plastic is light, and the foam plastic is lighter than the same plastic by several times or even dozens of times. The foam plastic has numerous small holes, so the foam plastic is not easy to transfer heat, can absorb sound, insulate, resist shock and the like, and is widely applied to daily life of people. The foam composite board is a composite material formed by gluing and pressing an inner material and an outer material or directly foaming the inner layer, wherein the outer layer of the board is made of a high-strength material, and the inner layer is made of a light heat-insulating foam material.

disclosure of Invention

The invention aims to provide a preparation method of a flame-retardant polyurethane indoor protective wall material, which is light in weight, good in flame-retardant effect, low in cost and good in mechanical property.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a flame retardant polyurethane interior retaining wall comprising:

The first surface layer is any one of Al, PET or ASA layers;

the surface layer II is an Al layer;

The core layer is arranged between the first surface layer and the second surface layer and is a foamed polyurethane layer, and the foamed polyurethane layer is mutually bonded with the first surface layer and the second surface layer.

As a further improvement, the core layer comprises a first core layer, a second core layer and a third core layer, the second core layer is arranged between the first core layer and the third core layer, the density of the first core layer is a, the density of the second core layer is b and the density of the third core layer is c, and the number relation is satisfied: b < a < c.

A method of making a flame retardant polyurethane interior retaining wall comprising the steps of:

1) 20-60 parts of polyether polyol, 20-40 parts of polyester polyol, 0.1-2 parts of a foaming catalyst, 0.5-1 part of a trimerization catalyst, 1-3 parts of silicone oil, 5-15 parts of a flame retardant, 4-6 parts of a foam stabilizer and 7-8 parts of an alkane foaming agent;

2) Putting polyester polyol and polyether polyol into a charging basket, stirring at the rotating speed of 45-65 rpm, adding a trimerization catalyst, silicone oil and a flame retardant, adjusting the rotating speed to be 60-80 rpm, mixing for 15-20 minutes, injecting into a stirring tank of a foaming machine, adding an alkane foaming agent and a foam stabilizer, and adjusting the rotating speed to be 50-70 rpm; the foaming machine uniformly mixes all the components and then injects the mixture into a mould for foaming, curing and curing to obtain a polyurethane layer;

3) carrying out hot-pressing compounding on the surface of the Al or PET or ASA layer and one side of the polyurethane layer through chromizing treatment;

4) and performing chrome chromizing treatment on the surface of the Al, and performing hot-pressing compounding on the other surface of the polyurethane layer to obtain the flame-retardant polyurethane indoor protective wall.

As a further improvement, the flame retardant is any one of tris (2-chloroethyl) phosphate, tris (2-chloropropyl) phosphate and ammonium polyphosphate.

As a further improvement, the foam stabilizer is any one of B8525, B8545, DC5598 and DC 193.

as a further improvement, the trimerization catalyst is one or more of potassium acetate, potassium formate, potassium citrate, potassium octoate, benzyltriethylammonium chloride and hexadecyldimethylbenzylammonium chloride.

As a further improvement, the alkane blowing agent is any one of cyclopentane, n-pentane and isopentane.

in a further improvement, the foaming catalyst is any one of pentamethyldiethylenetriamine and dimethylcyclohexylamine.

The preparation method of the flame-retardant polyurethane indoor protective wall material has the following beneficial effects:

1) the foam board has excellent mechanical properties, strong flame retardance and strong bonding force with materials of a surface layer, and has excellent mechanical properties and flame retardance compared with the foam board purchased in the prior art;

2) because the foaming agent and the flame retardant are used in the raw materials in a matched manner, the density of the cross section of the prepared polyurethane foam board is gradually increased from the middle to the first surface layer and the second surface layer, so that the overall quality is reduced, and the overall strength is not influenced;

3) The flame retardant grade of the polyurethane foam board is flame retardant grade, and the polyurethane foam board is suitable for popularization and application.

drawings

FIG. 1 is a schematic structural diagram of an indoor flame retardant polyurethane protective wall according to the present invention.

1-surface layer one, 2-surface layer two, 3-core layer, 31-core layer one, 32-core layer two, 33-core layer three.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described below with reference to examples a to f: