阅读说明：本技术 一种柔韧抗压型酚醛泡沫 (Flexible compression-resistant phenolic foam ) 是由 房中华 于 2020-06-23 设计创作，主要内容包括：本发明公开了一种柔韧抗压型酚醛泡沫,属于酚醛泡沫技术领域,包括泡沫主体,所述泡沫主体内部设有基体层,所述基体层内部一侧填充有增韧层A,所述基体层内部另一侧填充有增韧层B,所述泡沫主体内部开设有空腔,所述空腔内部填充有保温层,其增韧层A材质为橡胶,能与酚醛树脂中的轻甲基发生不同程度的接枝或嵌段共聚反应,形成海岛结构,通过内部的弯曲变形来提升泡沫主体的抗冲击性,增韧层B材质为聚乙二醇热塑性树脂,其内部轻基与酚醛缩聚物中羟甲基易发生缩合接枝反应,形成接枝共聚物,提高泡沫主体的柔韧性,通过增韧层A和增韧层B的相互配合,提升酚醛泡沫的柔韧和抗压性,进而提升其适用范围。(The invention discloses a flexible compression-resistant phenolic foam, which belongs to the technical field of phenolic foam and comprises a foam main body, wherein a base layer is arranged in the foam main body, a toughening layer A is filled at one side in the base layer, a toughening layer B is filled at the other side in the base layer, a cavity is formed in the foam main body, a heat insulation layer is filled in the cavity, the toughening layer A is made of rubber and can generate grafting or block copolymerization with different degrees with a hydroxymethyl group in phenolic resin to form a sea-island structure, the impact resistance of the foam main body is improved through internal bending deformation, the toughening layer B is made of polyethylene glycol thermoplastic resin, the internal lightweight group of the toughening layer B and the hydroxymethyl group in the phenolic polycondensate are easy to generate condensation grafting reaction to form a graft copolymer, the flexibility of the foam main body is improved, and the toughening layer A and the toughening layer B are matched with each other, the flexibility and the compressive resistance of the phenolic foam are improved, and the application range of the phenolic foam is further improved.)

1. The utility model provides a pliable and tough pressure-resistant phenolic foam, includes foam main part (1), its characterized in that, foam main part (1) inside is equipped with base member layer (2), the inside one side packing of base member layer (2) has toughening layer A (3), the inside opposite side packing of base member layer (2) has toughening layer B (4), cavity (5) have been seted up to foam main part (1) inside, cavity (5) inside packing has heat preservation (6).

2. The flexible compression-resistant phenolic foam according to claim 1, wherein the substrate layer (2) is made of phenolic foam.

3. The flexible pressure-resistant phenolic foam according to claim 1, wherein the toughening layer A (3) is made of rubber, and the toughening layer B (4) is made of polyethylene glycol thermoplastic resin.

4. The flexible pressure-resistant phenolic foam according to claim 1, wherein the insulating layer (6) is made of silica aerogel cushion.

Technical Field

The invention relates to the technical field of phenolic foam, in particular to flexible compression-resistant phenolic foam.

Background

The phenolic foam is a closed-cell rigid foamed plastic made up by using phenolic resin, fire-retardant, smoke-inhibiting agent, solidifying agent, foaming agent and other auxiliary agents through a scientific formula, and features fire-retardant, low smoke and high-temp. resistant, and can be cast in situ, moulded and machined to make plate, pipe shell and various shaped products.

Patent No. CN 202299221U's publication a phenolic foam composite sheet, can effectively block the phenolic foam layer and absorb water to prevent that phenolic foam from because of the deformation that absorbs water leads to, mechanical properties and heat preservation performance decline scheduling problem, in addition, direct contact phenolic foam when construction has been avoided to first polymer cement base coating, has reduced by the construction degree of difficulty that the slag easily leads to greatly of phenolic foam fragility.

The phenolic foam has the following defects that 1, the phenolic foam has poor pressure resistance due to the physical characteristics of the phenolic foam, and the like, and the phenolic foam is very brittle and easy to pulverize, so that the phenolic foam has poor flexibility and is easy to break; 2. the traditional phenolic foam only has a single layer structure, and can only rely on the heat preservation characteristic of the phenolic foam to preserve heat when preserving heat, so that the heat preservation performance of the phenolic foam is poorer when the phenolic foam is used in an environment with higher heat preservation requirement.

Disclosure of Invention

The invention provides flexible compression-resistant phenolic foam, and aims to improve the flexibility and compression resistance of the phenolic foam and further improve the heat insulation performance of the phenolic foam.

The specific technical scheme provided by the invention is as follows:

the invention provides a flexible compression-resistant phenolic foam which comprises a foam main body, wherein a base layer is arranged in the foam main body, one side in the base layer is filled with a toughening layer A, the other side in the base layer is filled with a toughening layer B, a cavity is formed in the foam main body, and a heat insulation layer is filled in the cavity.

Optionally, the base layer is made of phenolic foam.

Optionally, the material of the toughening layer a is rubber, and the material of the toughening layer B is polyethylene glycol thermoplastic resin.

Optionally, the insulating layer is made of a silica aerogel pad.

The invention has the following beneficial effects:

1. the matrix layer is used as a main body in the foam main body, the matrix layer is made of phenolic foam, the toughening layer A and the toughening layer B are filled in the matrix layer, the toughening layer A is made of rubber, the end group of a rubber elastomer has higher activity and can generate grafting or block copolymerization with light methyl in phenolic resin in different degrees, a sea-island structure is easy to form, the morphological structure is favorable for absorbing external impact energy through internal bending deformation when the material is impacted by external force, the impact resistance of the foam main body is improved, the toughening layer B is made of polyethylene glycol thermoplastic resin, a condensation grafting reaction is easy to generate between internal light groups and hydroxymethyl in phenolic polycondensate to form a graft copolymer, the brittleness of the phenolic resin is improved, the flexibility of the foam main body is improved, and the flexibility and the pressure resistance of the phenolic foam are improved through the mutual matching of toughening of the toughening layer A and the toughening layer B, thereby improving the application range.

2. The inside cavity and the inside packing of cavity of having seted up of foam main part have the heat preservation, the heat preservation material is silica aerogel pad, its pore size is less than air molecule mean free path under the ordinary pressure, consequently, air molecule is approximate static in the aerogel space, thereby the convection heat transfer of air has been avoided, and the extremely low bulk density of aerogel and the crooked route of nanometer grid structure have also prevented gaseous state and solid-state heat-conduction, consequently, extremely strong heat preservation and heat-proof quality has, pack inside the foam main part, the thermal insulation performance of phenolic foam has further been promoted.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a flexible compression-resistant phenolic foam according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a flexible compression-resistant phenolic foam of an embodiment of the present invention;

fig. 3 is a schematic diagram of a matrix layer structure of a flexible compression-resistant phenolic foam according to an embodiment of the invention.

In the figure: 1. a foam body; 2. a substrate layer; 3. a toughening layer A; 4. a toughening layer B; 5. a cavity; 6. and (7) an insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A flexible compression-resistant phenolic foam according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 3.

Referring to fig. 1, 2 and 3, the flexible compression-resistant phenolic foam provided by the embodiment of the invention includes a foam body 1, a base layer 2 is arranged inside the foam body 1, one side inside the base layer 2 is filled with a toughening layer a3, the other side inside the base layer 2 is filled with a toughening layer B4, a cavity 5 is arranged inside the foam body 1, and an insulating layer 6 is filled inside the cavity 5.

In an example, the toughening layer A3 is made of rubber, the terminal group has higher activity, and can generate grafting or block copolymerization reaction with light methyl in phenolic resin to different degrees, thus easily forming a sea-island structure, the external impact energy is absorbed through the internal bending deformation, the impact resistance of the foam body 1 is improved, the toughening layer B4 is made of polyethylene glycol thermoplastic resin, the internal light group and hydroxymethyl in the phenolic polycondensate are easy to generate condensation grafting reaction to form a graft copolymer, the brittleness of the phenolic resin is improved, the flexibility of the foam main body 1 is improved, the flexibility and the compression resistance of the phenolic foam are improved through the mutual matching of the toughening layer A3 and the toughening layer B4, and then promote its application scope, 6 materials in heat preservation are silica aerogel pads, have extremely strong heat preservation heat-proof quality, fill inside foam main part 1, have further promoted phenolic foam's thermal insulation performance.

When the foam is used, the base layer 2 is used as a main body in the foam main body 1, the base layer 2 is made of phenolic foam, the toughening layer A3 and the toughening layer B4 are filled in the base layer 2, the toughening layer A3 is made of rubber, the end group of a rubber elastomer has high activity and can generate grafting or block copolymerization with light methyl in phenolic resin in different degrees, a sea-island structure is easy to form, the morphological structure is favorable for absorbing external impact energy through internal bending deformation when the material is impacted by external force and improving the impact resistance of the foam main body 1, the toughening layer B4 is made of polyethylene glycol thermoplastic resin, the internal light groups and hydroxymethyl in phenolic polycondensate are easy to generate condensation grafting reaction to form a graft copolymer, the brittleness of the phenolic resin is improved, the flexibility of the foam main body 1 is improved, and the flexibility and the pressure resistance of the phenolic foam are improved through the mutual matching of the toughening layer A3 and the toughening layer B4, and then promote its application scope, foam main part 1 is inside to have seted up cavity 5 and cavity 5 inside packing has heat preservation 6, heat preservation 6 materials are silica aerogel pad, its pore size is less than air molecule mean free path under the ordinary pressure, consequently, air molecule is approximate static in the aerogel space, thereby the convection heat transfer of air has been avoided, and the extremely low bulk density of aerogel and the crooked route of nanometer grid structure have also prevented gaseous state and solid-state heat-conduction, consequently, extremely strong heat preservation and heat-proof quality has, pack inside foam main part 1, the heat preservation performance of phenolic foam has further been promoted.

The flexible compression-resistant phenolic foam comprises a foam body 1, a base layer 2, a toughening layer A3, a toughening layer B4, a cavity 5 and an insulating layer 6, wherein the components are all universal standard components or components known by a person skilled in the art, and the structure and the principle of the flexible compression-resistant phenolic foam can be known by a technical manual or a conventional experimental method.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.