CN218755492U

CN218755492U - Ceramic polyolefin composite material with heat insulation and fire resistance

Info

Publication number: CN218755492U
Application number: CN202222640157.3U
Authority: CN
Inventors: 李�昊; 魏琼
Original assignee: Hubei Sunriver High Tech Co ltd
Current assignee: Hubei Sunriver High Tech Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-28
Anticipated expiration: 2032-09-29

Abstract

The utility model provides a pottery polyolefin combined material with thermal-insulated fire resistance belongs to pottery polyolefin combined material field, and it includes fine cloth layer of glass and pottery polyolefin sheet layer, and the fine cloth layer of glass is range upon range of on pottery polyolefin sheet layer, and pottery polyolefin sheet layer thickness is 0.3mm ~ 10mm. An adhesive layer is arranged between the glass fiber cloth layer and the ceramic polyolefin sheet layer. The ceramic polyolefin sheet has a compact micropore structure inside the material after being vitrified, and the average pore diameter of micropores is 0.1 mm-2 mm. The utility model discloses a with fine cloth layer of glass and the compound together of porcelainizing polyolefin sheet layer stack, synthesize the performance of two kinds of materials, obtain the combined material that comprehensive properties is good.

Description

Ceramic polyolefin composite material with heat insulation and fire resistance

Technical Field

The utility model belongs to pottery polyolefin combined material field, more specifically relates to a pottery polyolefin combined material with thermal-insulated fire resistance.

Background

Traditional polymer flame retardant material is meeting high temperature or naked light when, self can produce the burning, takes place the schizolysis, and final residue is loose powdered residue, protection material that can not be fine, along with the improvement of people's fire prevention safety consciousness, fire-retardant fire-resistant and thermal-insulated material demand is more and more definite, and the application scene also becomes more, and this type of material plays crucial effect in people's life. The ceramifiable polyolefin material is a novel flame-retardant refractory material, can be transformed into a ceramic-like body under the condition of flame ablation, has high strength, and can be kept unchanged in shape and size.

However, the ceramifiable polyolefin material is easy to generate molten drops under the continuous action of high temperature to cause secondary damage, and the ceramifiable polyolefin material is converted into a ceramic-like body, so that the ceramifiable polyolefin material is not superior to an intumescent flame retardant material in heat insulation performance, is good when being applied to a fireproof cable, and can protect the cable from normal operation.

Therefore, there is a need to develop a ceramicized polyolefin composite material capable of having excellent heat insulation properties and being fire-resistant.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model aims to provide a porcelainized polyolefin combined material with thermal-insulated fire resistance can synthesize the performance of two kinds of materials through the fine cloth layer of glass and porcelainized polyolefin sheet layer stack complex together, obtains the combined material that comprehensive properties is good.

In order to achieve the above object, the utility model provides a porcelainized polyolefin composite with thermal-insulated fire resistance, it includes fine cloth layer of glass and porcelainized polyolefin sheet layer, and fine cloth layer of glass is range upon range of on porcelainized polyolefin sheet layer, and porcelainized polyolefin sheet layer thickness is 0.3mm ~ 10mm.

Furthermore, an adhesive layer is arranged between the glass fiber cloth layer and the ceramic polyolefin sheet layer.

Furthermore, the ceramic polyolefin sheet has a compact micropore structure inside the material after being subjected to ceramic treatment, and the average pore diameter of micropores is 0.1-2 mm.

Furthermore, the average distance between micropores is 0.2 mm-3 mm.

Furthermore, the maximum aperture of the micropores is 2 mm-3 mm.

Furthermore, the thickness of the pore wall of the micropore is 0.05 mm-0.5 mm.

Furthermore, the thickness of the adhesive layer is 0.1 mm-2 mm.

Furthermore, the thickness of the glass fiber cloth layer is 0.1 mm-2 mm.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

the utility model discloses in, compound together glass fiber cloth layer and polyolefin material layer, have the effect in two aspects, on the one hand, polyolefin material is under the condition that receives flame impact or self burning, there is one section "fragile period", specific period scope means that ceramic polyolefin material from the beginning burning schizolysis to the period of changing into class ceramic body structure, in this period, ceramic polyolefin material is that there is not mechanical properties can say, can't bear the effect of external force, and can produce the shrink, and the existence of glass fiber cloth has just fine complementing the mechanical defect of this section "fragile period", very big supporting role has been played, make ceramic polyolefin material can not be heated the air current, vibrations or splash and external force such as external force effect and collapse and lead to the guard action inefficacy, simultaneously can not make the material receive the flame influence to produce the shrink and lead to deformation seriously; on the other hand, due to the self fire-resistant and flame-retardant performance of the glass fiber cloth, the fire-resistant and heat-insulating performance of the ceramic polyolefin material can be better improved, the flame impact resistance of the material is improved, and the direct contact between flame and a protective object is prevented.

Drawings

Fig. 1 is a schematic structural view of a glass fiber cloth layer and a polyolefin material layer provided by an embodiment of the present invention stacked and integrated together;

fig. 2 is a schematic structural view of the glass fiber cloth layer and the polyolefin material layer provided by the embodiment of the present invention, wherein the glass fiber cloth layer and the polyolefin material layer are integrally formed.

Wherein like reference numerals refer to like structures and components throughout the several views, and in particular:

1-glass fiber cloth layer 2-ceramic polyolefin sheet layer 3-adhesive layer

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 is a schematic structural view of the glass fiber cloth layer and the polyolefin material layer stacked together according to an embodiment of the present invention, which includes a glass fiber cloth layer and a ceramic polyolefin sheet layer, wherein the glass fiber cloth layer is stacked on the ceramic polyolefin sheet layer. Fig. 2 is the embodiment of the utility model provides a have gluing agent layer and form integrative schematic structure between fine cloth layer of glass and the polyolefin material layer, gluing agent layer thickness is 0.1mm ~ 2mm, gluing agent layer's material is high melt index, the polyolefin material of high adhesion nature and the mixture of coupling agent, the concrete composition of gluing agent does not have special specific requirement, the effect of gluing agent is for improving the adhesive strength between ceramic polyolefin material and the fine cloth of glass, avoid this combined material when receiving high temperature to act on, ceramic polyolefin material and the fine cloth problem that breaks away from of glass.

The utility model discloses in, the inside fine and close micropore structure that has of porcelainized polyolefin sheet layer porcelainization back material, the average aperture of micropore is 0.1mm ~ 2mm, the average interval of micropore is 0.2mm ~ 3mm, the maximum aperture of micropore is 2mm ~ 3mm, the pore wall thickness of micropore is 0.05mm ~ 0.5mm, gluing agent layer thickness is 0.1mm ~ 2mm, the fine cloth layer thickness of glass is 0.1mm ~ 2mm.

The ceramic polyolefin sheet layer has the sheet thickness of 0.3-10 mm, preferably 0.3-5 mm, the crosslinking degree of less than or equal to 60%, the sheet begins to ceramic after being impacted by flame at 1000 +/-50 ℃ for 1min, the ceramic material has a compact micropore structure inside, the average pore diameter of micropores is 0.1-2 mm, the average pore space is 0.2-3 mm, the maximum bubble diameter is 2-3 mm, and the pore wall thickness is 0.05-0.5 mm. After the sheet material is impacted by flame at 1000 +/-50 ℃ for 30min, the change rate of the linear dimension of the material in the length direction and the width direction is less than 20%, and further preferably, after the sheet material is impacted by flame at 1000 +/-50 ℃ for 30min, the change rate of the linear dimension of the material in the length direction and the width direction is less than 10%. When the thickness of the sheet is 0.3mm or more, the sheet is not burnt through in the thickness direction under the condition of flame impact for 30 minutes at 1000 ℃ +/-50 ℃, the final ablation residual rate is over 60 percent, and when the thickness of the sheet is 1.0mm or more, the maximum temperature of the non-heated surface is 400 ℃ to 650 ℃ under the condition of flame impact for 5 minutes at 1000 ℃ +/-50 ℃.

In practical engineering practice, the tensile strength of the ceramic is more than 10MPa at normal temperature, the ceramic forming strength after ablation for 30min at the high temperature of 800 ℃ is between 8 and 15MPa, and the ceramic forming strength after ablation for 30min at the high temperature of 1000 ℃ is between 20 and 50 MPa.

Wherein, the degree of crosslinking is more than 60%, the bending and flexibility of the material are influenced, and the use of the material is influenced. The average pore size and pore wall thickness are important. The pore size is strongly related to the strength of the porcelain and the heat insulating property. The average pore diameter represents the size of micropores in the whole micropore area, the size of the average pore diameter can directly influence the ceramic forming strength and the heat insulation property of the ceramic forming material, if the pore diameter is less than 0.1mm, the heat insulation property is poor, and if the pore diameter is more than 2mm, the ceramic forming strength is poor, so that the impact resistance effect cannot be realized; the thickness of the hole wall can influence the heat insulation and flame impact resistance, the flame impact resistance is poor when the average hole wall thickness is less than 0.05mm, the hole wall cannot impact for 30min under the flame of 1000 ℃, and the heat insulation is poor when the average hole wall thickness is more than 0.5mm. After the flame impact is carried out for 30min at 1000 ℃, if the linear size change rate of the material is more than 20%, the material is possible to expose the protected object in the flame environment, the normal operation of the protected object is influenced, and the protection effect is invalid. When the thickness of the sheet is less than 0.3mm, the sheet is easily broken down by flame at 1000 ℃. The final ablation residual rate is more than 60 percent, which is the basic guarantee of fire resistance and high porcelain forming strength. When the thickness of the sheet is 1.0mm or more, the heat insulation performance of the material can be best embodied, and the highest temperature of the non-heated surface is 400-650 ℃ which is the heat insulation performance of the material. The tensile strength is more than 10MPa, the engineering stress requirement of the ceramic polyolefin material in application is met, and the tensile strength is less than 10MPa, and the engineering application of the material is very limited. The greater the strength of the ceramic after ablation, the greater the impact or spray resistance, and the greater the upper limit must be.

The ceramic polyolefin sheet comprises the following components in parts by weight: 50 to 100 parts of polyolefin resin, 150 to 300 parts of prepared porcelain powder master batch and 50 to 100 parts of fluxing agent, wherein the prepared porcelain powder master batch is master batch prepared by mixing prepared porcelain powder and polyolefin resin, the mass content of the porcelain powder in the prepared porcelain powder master batch is 60 to 70 percent, the particle size of the prepared porcelain powder is 1 to 10 mu m, the prepared porcelain powder is one or more of calcined kaolin, wollastonite, diatomite, mica and talcum powder, and the prepared porcelain powder contains alkali metal oxide K ₂ O、Na ₂ O and Li ₂ O, the mass of all alkali metal oxides in the ceramic powder accounts for 1-10% of the mass of the whole ceramic powder, and the melting point of the ceramic powder is between 1000-1800 ℃. The components also comprise 1 to 2 parts of antioxidant and 1 to 5 parts of coupling agent.

The ceramic powder is added by ceramic powder master batches, the dispersibility of the ceramic powder and the polyolefin resin is improved by the ceramic powder master batches, gas among the ceramic powder is removed, the porosity is reduced, the volume expansion of the ceramic powder at the high temperature of more than 800 ℃ is weakened to a certain extent, and the dimensional stability of the ceramic polyolefin material at the temperature of more than 800 ℃ is improved. The ceramic forming powder is mainly made of traditional silicate materials, the melting point is between 1000 ℃ and 1800 ℃, the fire resistance is poor mainly from the perspective of the fire resistance and the ceramic forming temperature, if the melting point is lower than 1000 ℃, the fire resistance is poor, when the ceramic forming powder is applied to a new energy battery pack, after the new energy battery pack is out of control due to heat, the sheet can be seriously melted and shrunk, and the heat diffusion cannot be effectively prevented, if the temperature is higher than 1800 ℃, the required ceramic forming temperature is high, the ceramic forming speed is slow, and the ceramic forming powder can be dispersed by flame before the ceramic forming is not carried out, and cannot bear the jet after the heat of the battery pack is out of control. The reason that the specific surface area under this particle diameter is comparatively suitable for the porcelain powder particle diameter of becoming is because, can be fine let become mix the dispersion between the porcelain powder to and become the porcelain powder and have big area of contact with the base member, better dispersion between base member resin, when firing porcelain, can not cause the great hole of sheet appearance because of the schizolysis of resin, lead to contracting seriously, after new energy battery package thermal runaway, flame can wear out from the hole. The content of alkali metal oxide in the ceramic powder is 1-10%, and mainly from the aspects of the sintering property and the refractoriness of the ceramic powder, the sintering temperature of the ceramic powder is high when the content of alkali metal is lower than 1%, the ceramic forming speed is low when the new energy battery pack is out of control due to heat, the content of alkali metal is higher than 10%, and the refractoriness is poor. The alkali metal oxide has fluxing action on silicate substances (the alkali metal oxide increases the proportion of oxygen atoms in the porcelain powder, increases the quantity of oxygen in the silicate structure, breaks silicon-oxygen bonds, and simultaneously, the radius of the alkali metal is smaller, so that the alkali metal can easily enter structural gaps of the silicate to form eutectic mixtures with other oxides). Different ceramic powder forming positions are different, and subsequent treatment processes are different, so that the content of alkali metal oxide is greatly different.

The utility model discloses the pottery polyolefin material layer and the fine cloth layer of glass have been synthesized, the performance of two kinds of materials has been synthesized in other words, have very excellent fire-resistant fire behavior, especially in the flame environment more than 1000 ℃, not only can keep the dimensional stability of material, avoid taking place deformation, can also ceramic fast, change into the class ceramic body, play the effect of anti external force destruction, can use on new energy automobile's pencil or the lower cover department of battery package, and use on the fire-resistant cable, improve the fire-resistant ability under these applied scenes, weaken the harm that the conflagration brought greatly.

It will be understood by those skilled in the art that the foregoing is merely exemplary of the present invention, and is not intended to limit the invention to the particular forms disclosed, and all changes, equivalents and modifications that fall within the spirit and scope of the invention are intended to be embraced thereby.

Claims

1. The ceramic polyolefin composite material with the heat insulation and fire resistance comprises a glass fiber cloth layer and a ceramic polyolefin sheet layer, wherein the glass fiber cloth layer is laminated on the ceramic polyolefin sheet layer, and an adhesive layer is arranged between the glass fiber cloth layer and the ceramic polyolefin sheet layer, and is characterized in that the thickness of the ceramic polyolefin sheet layer is 0.3-10 mm, the ceramic polyolefin sheet has a compact micropore structure inside the material after being vitrified, the average pore diameter of micropores is 0.1-2 mm, and the average distance of micropores is 0.2-3 mm.

2. A ceramicized polyolefin composite material according to claim 1, wherein the maximum pore diameter of the micropores is 2mm to 3mm.

3. A ceramicized polyolefin composite material according to claim 2, wherein the micropores have a pore wall thickness of 0.05mm to 0.5mm.

4. A ceramicized polyolefin composite material according to claim 3, wherein the adhesive layer has a thickness of 0.1mm to 2mm.

5. A ceramified polyolefin composite material according to claim 4, wherein the glass cloth layer has a thickness of 0.1mm to 2mm.