CN214215056U - High-compressive-strength self-waterproof rigid polyurethane composite board with pentane as foaming agent - Google Patents
High-compressive-strength self-waterproof rigid polyurethane composite board with pentane as foaming agent Download PDFInfo
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- CN214215056U CN214215056U CN202022282541.1U CN202022282541U CN214215056U CN 214215056 U CN214215056 U CN 214215056U CN 202022282541 U CN202022282541 U CN 202022282541U CN 214215056 U CN214215056 U CN 214215056U
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Abstract
The utility model relates to an use high compressive strength self waterproof rigid polyurethane composite sheet of pentane as foamer, it belongs to the polyurethane composite sheet field. Comprises a density of 30-45kg/m3The flame-retardant polyurethane foam comprises flame-retardant rigid polyurethane foam taking pentane as a foaming agent and EPE cotton layers with the thickness of 3-12mm arranged on two sides of the flame-retardant rigid polyurethane foam, wherein a bearing PP framework with a cylindrical hollow structure with the diameter of 5-10 cm is arranged inside the flame-retardant rigid polyurethane foam. Compared with the prior art, the beneficial effects of the utility model are that: first, the utility model discloses well rigid polyurethane foam utilizes its autohension and the cotton layer complex of the two-layer EPE in the outside to be a whole before the solidification, introduces the bearing PP skeleton of corresponding thickness again in rigid polyurethane foam, and the complex is made, and this kind of composite sheet compressive strength is high, lasts bearing nature good, owing to be the cotton layer of two-layer EPE, so has excellent stable heat preservation waterproof performance to indeformable.
Description
Technical Field
The utility model relates to an use high compressive strength self waterproof rigid polyurethane composite sheet of pentane as foamer, it belongs to the polyurethane composite sheet field.
Background
CFCs (chlorofluorocarbons) are used as traditional foaming agents, are widely applied to products such as building heat insulation materials, pipeline heat insulation materials and the like, are good foaming agents, but are not environment-friendly enough, can consume a large amount of ozone in the atmosphere, and in order to protect the atmospheric ozone layer, the Montreal protocol is signed in the international society of 9, 16 th 1987, and the Montreal protocol is added from 6 th 1991 in China, and the elimination plan of CFCs (chlorofluorocarbons) is started.
HCFCs elimination plan is implemented in 2012, according to agreement and actual conditions in China, the use amount of HCFCs is reduced by 45% until 2020, the use amount of HCFCs is reduced by 100% until 2026, and the use of HCFCs is completely stopped in China until 2030.
Currently, in the field of building insulation, the transition product HCFCs-141b commonly used as either a field spray or a plate rigid polyurethane foaming agent belongs to the category. Is not friendly to environment, and can destroy odor in atmosphereThe oxygen layer brings great harm to human health. Hard polyurethane is generally sprayed on the ground for heat preservation of the cold storage and indoor projects on ice, and accounts for more than 90% of the market; the polyurethane density must be more than 55kg/m for frequent mass getting on or bearing ground3Even higher, high density, high cost, and a thermal conductivity of 35-45 kg/m3The rigid polyurethane is much larger; the compressive strength is low, and after the rigid polyurethane foam structure continuously bears pressure for a long time, the rigid polyurethane foam structure is easily damaged and loses excellent heat insulation performance; the foam is not waterproof, the foam is hydrolyzed after being contacted with water for a long time, and the waterproof requirement in the construction process is strict. And after the hydrochlorofluorocarbon foaming agent is not allowed to be used in China, no foaming agent suitable for spraying rigid polyurethane is used, so that a novel rigid polyurethane composite board is required in the market.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of existence among the above-mentioned prior art, provide a high compressive strength self waterproof rigid polyurethane composite sheet who uses pentane as the foamer.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a high-compression-strength self-waterproof rigid polyurethane composite board using pentane as a foaming agent comprises a polyurethane layer with the density of 30-45kg/m3The polyurethane foam comprises a flame-retardant rigid polyurethane foam using pentane as a foaming agent and EPE cotton layers with the thickness of 3-12mm arranged on two sides of the flame-retardant rigid polyurethane foam, wherein a bearing PP framework with a cylindrical hollow structure with the diameter of 5-10 cm is arranged inside the flame-retardant rigid polyurethane foam.
The EPE cotton layer is a cloth formed by foaming low-density polyethylene mixed with different pigments.
The load-bearing PP framework is a framework belt formed by polypropylene through an extrusion mechanism after being modified by fillers.
The unit compressive strength of the bearing PP framework is not lower than 300 KPa.
The flame-retardant rigid polyurethane foam is obtained by modifying polyisocyanurate by using flame-retardant polyester or flame-retardant polyether and other auxiliaries, wherein the isocyanate index is between 110 and 350.
The pentane is one of n-pentane, isopentane, cyclopentane and a mixture of cyclopentane and isopentane (70/30).
Compared with the prior art, the beneficial effects of the utility model are that: firstly, the utility model discloses well rigid polyurethane foam utilizes its autohension and the cotton layer of outside two-layer EPE to compound into a whole before the solidification, introduces the bearing PP skeleton of corresponding thickness simultaneously before the polyurethane is annotated, through the foaming shaping in the polyurethane laminator of accuse temperature 15 ℃ -80 ℃, compound and make, this kind of composite sheet compressive strength is high, it is good to last bearing nature, owing to be two-layer EPE cotton layer, so have excellent stable heat preservation waterproof performance, and indeformable, flame retardant property is high; secondly, the utility model can not produce the substances which can release and destroy the ozone layer, and can not produce the substances which can hurt the human body.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, EPE cotton layer; 2. a load-bearing PP skeleton; 3. flame-retardant rigid polyurethane foam.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
A high-compression-strength self-waterproof rigid polyurethane composite board using pentane as a foaming agent comprises a polyurethane layer with the density of 35kg/m3The polyurethane foam comprises a flame-retardant rigid polyurethane foam 3 taking cyclopentane as a foaming agent and EPE cotton layers 1 with the thickness of 5mm arranged on two sides of the flame-retardant rigid polyurethane foam 3, wherein a bearing PP framework 2 with a cylindrical hollow structure with the diameter of 6 cm is arranged inside the flame-retardant rigid polyurethane foam 3.
The EPE cotton layer 1 is a cloth formed by foaming low-density polyethylene mixed with different pigments.
The load-bearing PP framework 2 is a framework belt formed by polypropylene through an extrusion mechanism after being modified by fillers.
The unit compressive strength of the bearing PP framework is not lower than 300 KPa.
The flame-retardant rigid polyurethane foam 3 is obtained by modifying polyisocyanurate by using flame-retardant polyester or flame-retardant polyether and other auxiliaries, wherein the isocyanate index is between 110 and 350.
Example 2
A high-compression-strength self-waterproof rigid polyurethane composite board using pentane as a foaming agent comprises a rigid polyurethane composite board with the density of 38kg/m3The polyurethane foam comprises a flame-retardant rigid polyurethane foam 3 and EPE cotton layers 1, wherein the flame-retardant rigid polyurethane foam 3 takes a mixture of cyclopentane and n-pentane (70/30) as a foaming agent, the EPE cotton layers 1 are arranged on two sides of the flame-retardant rigid polyurethane foam 3 and have the thickness of 8mm, and a bearing PP framework 2 with a cylindrical hollow structure with the diameter of 8 cm is arranged inside the flame-retardant rigid polyurethane foam 3.
The EPE cotton layer 1 is a cloth formed by foaming low-density polyethylene mixed with different pigments.
The load-bearing PP framework 2 is a framework belt formed by polypropylene through an extrusion mechanism after being modified by fillers.
The unit compressive strength of the bearing PP framework is not lower than 300 KPa.
The flame-retardant rigid polyurethane foam 3 is obtained by modifying polyisocyanurate by using flame-retardant polyester or flame-retardant polyether and other auxiliaries, wherein the isocyanate index is between 110 and 350.
Example 3
A high-compression-strength self-waterproof rigid polyurethane composite board using pentane as a foaming agent comprises a polyurethane layer with the density of 40kg/m3The polyurethane foam comprises a flame-retardant rigid polyurethane foam 3 taking isopentane as a foaming agent and EPE cotton layers 1 with the thickness of 10mm arranged on two sides of the flame-retardant rigid polyurethane foam 3, wherein a bearing PP framework 2 with a cylindrical hollow structure with the diameter of 5 cm is arranged inside the flame-retardant rigid polyurethane foam 3.
The EPE cotton layer 1 is a cloth formed by foaming low-density polyethylene mixed with different pigments.
The load-bearing PP framework 2 is a framework belt formed by polypropylene through an extrusion mechanism after being modified by fillers.
The unit compressive strength of the bearing PP framework is not lower than 300 KPa.
The flame-retardant rigid polyurethane foam 3 is obtained by modifying polyisocyanurate by using flame-retardant polyester or flame-retardant polyether and other auxiliaries, wherein the isocyanate index is between 110 and 350.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (2)
1. A high compressive strength self waterproof rigid polyurethane composite board using pentane as a foaming agent is characterized in that: comprises a density of 30-45kg/m3The polyurethane foam comprises a flame-retardant rigid polyurethane foam (3) taking pentane as a foaming agent and EPE cotton layers (1) with the thickness of 3-12mm arranged on two sides of the flame-retardant rigid polyurethane foam (3), wherein a bearing PP framework (2) with a cylindrical hollow structure with the diameter of 5-10 cm is arranged inside the flame-retardant rigid polyurethane foam (3).
2. The high compressive strength self-waterproof rigid polyurethane composite board with pentane as a foaming agent according to claim 1, wherein the high compressive strength self-waterproof rigid polyurethane composite board is characterized in that: the unit compressive strength of the bearing PP framework (2) is not lower than 300 KPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022282541.1U CN214215056U (en) | 2020-10-14 | 2020-10-14 | High-compressive-strength self-waterproof rigid polyurethane composite board with pentane as foaming agent |
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| CN202022282541.1U CN214215056U (en) | 2020-10-14 | 2020-10-14 | High-compressive-strength self-waterproof rigid polyurethane composite board with pentane as foaming agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929868A (en) * | 2021-09-24 | 2022-01-14 | 北京理工大学 | Explosion-proof and impact-resistant structure based on flexible ball and preparation method of explosion-proof and impact-resistant flexible ball |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929868A (en) * | 2021-09-24 | 2022-01-14 | 北京理工大学 | Explosion-proof and impact-resistant structure based on flexible ball and preparation method of explosion-proof and impact-resistant flexible ball |
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