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Method for preparing composite board by waste thermosetting foamed plastics

A technology of foam plastics and composite boards, applied in applications, flat products, household appliances, etc., can solve the problems of retention, formaldehyde, moisture absorption and deformation, etc., and achieve the effects of nail-holding force, flame retardancy, high strength, and high flatness

Inactive Publication Date: 2010-01-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method of using waste thermosetting foam plastics to prepare composite panels, which expands the scope and approach of recycling thermosetting foam plastic waste, and at the same time solves the problems of formaldehyde retention and moisture absorption deformation in furniture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Put 68g of waste thermosetting SAN foam plastic powder, 10g of recycled rubber powder, and 5g of epoxy resin powder E-20 into a mixer and mix well

[0030] (2) Add dioctyl phthalate 6g, brominated epoxy resin 5g, carbon black 3g, 1g polyamide 650, silane coupling agent 1g, 0.5g antioxidant 1010 and 0.5g light aging to the mixer in turn Stir with agent GW-540, and each time adding the aforementioned additives, you must wait until the mixture is uniform before adding the next additive in sequence

[0031] (3) Mix the powder in step (2) and stir evenly to obtain the raw material powder

[0032] (4) According to 800kg / m 3 The board density volume is 0.054m 3 Weigh 43.2kg of compressible powder raw material, stir and preheat, temperature 120°C, time 20min

[0033] (5) Hot pressing, the pressure is 10MPa, the temperature is 140°C, and the time is 20min

[0034] (6) Low temperature setting, the pressure is 10MPa, the temperature is 50°C, and the time is 15min

[0035]...

Embodiment 2

[0038] (1) Put 60g of waste thermosetting phenolic foam plastic powder, 15g of recycled rubber powder, and 7g of epoxy resin powder E-20 into a mixer and mix well

[0039] (2) add chlorinated paraffin 5g, triphenol phosphate 5g, carbon black 3g, 1g polyamide 651, silane coupling agent 1g, 1g antioxidant 1010 and 1g light aging agent GW-540 to stirrer successively and stir, wherein each When adding one of the aforementioned additives, wait until the mixture is uniform before adding the next additive in turn.

[0040] (3) Mix the powder in step (2) and stir evenly to obtain the raw material powder

[0041] (4) According to 900kg / m 3 The board density volume is 0.054m 3 Weigh 48.6kg of compressible powder raw material, stir and preheat, temperature 140°C, time 10min

[0042] (5) Hot pressing, the pressure is 20MPa, the temperature is 200°C, and the time is 30min

[0043](6) Low temperature setting, the pressure is 15MPa, the temperature is 60°C, and the time is 20min

[0044...

Embodiment 3

[0047] (1) Put 60g of waste thermosetting polyurethane foam plastic powder and butyl rubber powder into a mixer and mix well

[0048] (2) Add 8 g of chlorinated paraffin, 5 g of triphenol phosphate, 0.5 g of silane coupling agent, 0.8 g of antioxidant 1010, and 0.2 g of light-resistant aging agent GW-540 into the mixer in turn, and stir for every addition of the aforementioned auxiliary agent Wait until the mixture is uniform before adding the next additive in sequence

[0049] (3) Mix the powder in step (2) and stir evenly to obtain the raw material powder

[0050] (4) According to 900kg / m 3 The board density volume is 0.054m 3 Weigh 48.6kg of compressible powder raw material, stir and preheat, temperature 160°C, time 20min

[0051] (5) Hot pressing, the pressure is 15MPa, the temperature is 160°C, and the time is 15min

[0052] (6) Low temperature setting, the pressure is 8MPa, the temperature is 80°C, and the time is 30min

[0053] (7) Sawing and sanding the prepared b...

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Abstract

The invention provides a method for preparing a composite board by waste thermosetting foamed plastics, which prepares the composite board through preheating, hot press molding, low-temperature forming and physical change and phase change among materials under high temperature without adhesive, has no solvent and formaldehyde and is safe and environmental-friendly. The composite board can replace a high-density board, has good processing and using property, and special properties, i.e. water resistance, inflaming retarding, corrosion resistance, and the like, which is incomparable from common boards and extensive application prospect.

Description

technical field [0001] The invention relates to a method for preparing composite boards, more specifically, to a method for preparing composite boards by utilizing waste thermosetting foamed plastics. Background technique [0002] The rapid development of the manufacturing industry and the automobile industry has brought convenience to people's lives, but it has also brought a large amount of thermosetting foam plastic waste, which has caused great pressure on the ecological environment. How to improve the comprehensive recycling efficiency of plastic products and the quality of recycled products, reduce plastic solid waste and control environmental pollution in the recycling process has become a worldwide issue. At present, China's recycling and reuse of waste plastics is not ideal. Most of them are simply used, with low technical level and lack of market competitiveness. ", the application date is March 28, 2000, the application number is 00113344.6, the publication date ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/22B29C43/58B29B13/02B29L7/00
Inventor 刘晓非李琳
Owner TIANJIN UNIV
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