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gpes rigid foam composite plastic insulation board and manufacturing method thereof

A technology of composite plastic and rigid foam, which is applied in the field of rigid foam composite plastic insulation boards for heat insulation, can solve the problems of high cost and limited application range, and achieve uniformity of temperature field, increase of frictional resistance, and uniformity of temperature field best results

Active Publication Date: 2017-12-08
SHANDONG PROVINCIAL ACAD OF BUILDING RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost is high, which is 2-3 times the cost of the above materials, which limits its application range

Method used

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  • gpes rigid foam composite plastic insulation board and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A GPES rigid foam composite plastic insulation board, which includes the following components by weight: 8 parts of modified nano-graphite particles, 5 parts of polyethylene (such as Yanshan Petrochemical 5200B), 85 parts of polystyrene (such as Yanshan Petrochemical 666D), 0.05 parts of glyceryl monostearate, 3.5 parts of supercritical carbon dioxide fluid. The supercritical carbon dioxide fluid is produced from waste gas, and then pressurized to 8MPa by a high-pressure pump. It is a canned liquid product produced by Qingdao Chengyang Changsong Gas Co., Ltd.

[0066] The nano-graphite particles that have been physically modified on the surface are compounded and mixed with 75 parts of nano-graphite powder graded from 0.8um-38um continuous particles and 25 parts of polyethylene, and are mixed at 150±5°C and 4MPa pressure by a single-screw mixer. Under certain conditions, extruded and cooled to produce round or cylindrical particles with a diameter of less than 2mm.

[...

Embodiment 2

[0097] The similarities between this example and Example 1 will not be repeated, and the difference lies in 92 parts of polystyrene, 3 parts of modified nano-graphite particles, and 3 parts of polyethylene.

[0098] The performance index of the foam board produced:

[0099] ⑴ Compressive strength: 265kPa.

[0100] (2) Water absorption rate: 0.62%.

[0101] ⑶ Dimensional stability: 0.7%.

[0102] ⑷ Density: 36.4kg / m 3 .

[0103] ⑸, closed cell rate: 92%;

[0104] ⑹. Thermal conductivity: 0.028 w / (m·K).

[0105] ⑺, combustion classification B1 level. Oxygen index: 30.2%

[0106] ⑻, tensile strength: 285kPa

[0107] ⑼. Water vapor permeability coefficient: 1.85 (ng / Pa.m.s).

[0108] When the amount of modified nano-graphite particles is less than 3 parts, the pressure at the extrusion port is less than 6 MPa, which does not meet the production requirements; when the weight part of polyethylene is 3 parts or less, the diameter of the bubbles of the thermal conductivity ex...

Embodiment 3

[0110] The similarities between this example and Example 1 will not be repeated, and the difference is 88 parts of polystyrene, 6 parts of modified nano-graphite particles, and 4 parts of polyethylene.

[0111] The performance index of the foam board produced:

[0112] ⑴ Compressive strength: 286kPa.

[0113] (2) Water absorption rate: 0.48%.

[0114] (3) Dimensional stability: 0.28%.

[0115] ⑷. Density: 31.9kg / m 3 .

[0116] ⑸, closed cell rate: 98%.

[0117] ⑹. Thermal conductivity: 0.022 w / (m·K).

[0118] ⑺, combustion classification B1 level. Oxygen index: 30.8%

[0119] (8) Tensile strength: 345 kPa.

[0120] ⑼. Water vapor moisture permeability coefficient: 1.79 (ng / Pa.m.s).

[0121] The properties of the above-mentioned foam board meet the requirements of the optimal index of the present invention, the dimensional stability, thermal conductivity, and water absorption all reach the optimal index, and the combustion performance also meets the requirements of B1 ...

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Abstract

The invention relates to a GPES rigid foam composite plastic insulation board and a manufacturing method thereof. The GPES rigid foam composite plastic insulation board comprises the following components in part by weight: 80 to 92 parts of polystyrene, 3 to 7 parts of polyethylene, 3 to 11 parts of nano graphite particles subjected to surface physical modification and 0.04 to 0.06 part of glyceryl monostearate. After the components are mixed, the mixture is molten at a temperature of 130 DEG C to 160 DEG C; then the obtained product is mixed at a temperature of 190 DEG C to 230 DEG C and under a pressure of 4MPa to 25MPa; 2 to 4 parts of supercritical carbon dioxide fluid is injected under a pressure of 25 to 35Mpa at the tail end of a seventh section of a first extruder; homogenization and transition are carried out and the obtained product is fed into a second screw extruder by a trumpet-shaped release tube and then is mechanically subjected to scattered regulation of dynamic mixing and static mixing by the second screw extruder; after being released under the conditions of a pressure of 7 to 12MPa and a temperature of 100 plus or minus 5 DEG C, the obtained product is pressed to form the GPES rigid foam composite plastic insulation board.

Description

technical field [0001] The invention relates to a rigid foam composite plastic insulation board for heat insulation, in particular to a heat insulation rigid foam plastic insulation board for external wall insulation and a manufacturing method thereof. Background technique [0002] At present, the types of rigid foam plastic insulation boards commonly used for external wall insulation at home and abroad are divided into: [0003] 1. Molded expanded polystyrene foam insulation board (EPS for short). [0004] This type of thermal insulation material is a conventional material commonly used for external wall insulation, and its thermal conductivity is greater than 0.033. The thickness of this type of thermal insulation material required by passive low-energy buildings will reach 200-350mm. [0005] The production process adopts mold box + steam curing foaming process, adopts expandable polystyrene particles, and does not need to add foaming agent. [0006] 2. Extruded expande...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08L23/06C08K13/02C08K3/04C08K5/103C08K3/22C08J9/12B29C47/92B29C48/92
Inventor 孙洪明吕红国
Owner SHANDONG PROVINCIAL ACAD OF BUILDING RES
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