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Preparation method of high-strength XPS (extruded polystyrene) thermal insulation board

An insulation board and high-strength technology, which is applied in the field of preparation of high-strength XPS extruded insulation board, can solve the problems of increased bulk weight and decreased foaming ratio of XPS extruded insulation board.

Inactive Publication Date: 2021-08-06
山西利源中天保温防腐工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many existing technologies are also preparing high-strength XPS extruded insulation boards by adding metal layers or cross-linking other components, but other problems have appeared to varying degrees, such as increasing the volumetric weight of XPS extruded insulation boards or making Decreased expansion ratio

Method used

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  • Preparation method of high-strength XPS (extruded polystyrene) thermal insulation board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of high-strength XPS extruded plastic insulation board, specifically the following steps:

[0023] Step 1: Prepare polystyrene raw materials: crush polystyrene to below 100 mesh, extrude and granulate with thermal crosslinking agent through a twin-screw extruder to obtain polystyrene masterbatch; each part of the twin-screw extruder The segment extrusion temperatures were 165°C, 175°C, and 185°C, respectively.

[0024] Step 2: Prepare activated carbon-graphene embeddings: weigh 5% tungsten carbide, 10% graphene powder, and the rest are activated carbon powder, and dry tungsten carbide and graphene powder together for 2 hours, Then add activated carbon and continue ball milling for 20 minutes to obtain a ball milling mixture; the speed of ball milling is 240-300r / min.

[0025] Add the ball mill mixture to water 5 times its mass, adjust the pH to 8 with sodium bicarbonate, perform ultrasonic treatment under stirring, and centrifugally filter the solu...

Embodiment 2

[0030] A preparation method of a high-strength XPS extruded insulation board. The main steps are the same as those in Example 1, except that a flame retardant with a mass percentage of 1% is added to the raw materials in Step 3.

Embodiment 3

[0032] A preparation method of high-strength XPS extruded insulation board, the main steps are the same as in Example 1, the difference is that 25% hydroxymethyl silicone oil is added in the activated carbon-graphene embedding prepared in step 2 , and then mixed with polystyrene masterbatch to prepare XPS extruded insulation board.

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Abstract

The invention discloses a preparation method of a high-strength XPS (extruded polystyrene) thermal insulation board, and belongs to the technical field of preparation of XPS thermal insulation boards. According to the specific scheme, raw materials for preparing the thermal insulation board comprise an activated carbon-graphene embedded material. A preparation method of the embedded material comprises the steps: making tungsten carbide and graphene powder jointly subjected to ball milling, then adding activated carbon for continuous ball milling, adding water into a ball-milled mixture, adjusting the pH to be 8-8.5, carrying out ultrasonic treatment in the stirring state, and centrifugally filtering the solution subjected to ultrasonic treatment to obtain a precipitate; carrying out high-temperature treatment on the precipitate at 350 to 550 DEG C for 20 to 30 minutes to obtain activated carbon-graphene powder; and embedding the activated carbon-graphene powder with melamine resin to obtain an activated carbon-graphene embedded material. The prepared XPS thermal insulation board is higher in overall waterproof performance, light in weight and high in strength.

Description

technical field [0001] The invention belongs to the technical field of preparation of XPS extruded plastic insulation boards, and relates to a preparation method of high-strength XPS extruded plastic insulation boards. Background technique [0002] XPS is a kind of thermal insulation material, which is called extruded polystyrene foam. It is made of polystyrene resin as raw material plus other raw materials and polymers. It is heated and mixed while injecting a catalyst, and then extruded and formed. The rigid foam plastic board manufactured has a perfect closed-cell honeycomb structure. This structure allows the XPS board to have extremely low water absorption, low thermal conductivity, high compression resistance, aging resistance, light weight, high strength, and water absorption. Low, easy construction, widely used in building roof insulation, steel structure roof, building wall insulation, building ground moisturizing, square ground, ground frost heave control, central ...

Claims

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Application Information

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IPC IPC(8): C08J9/12C08L25/06C08K7/24C08K3/04C08K3/14C08K9/10
CPCC08J9/122C08J2203/06C08J2203/08C08J2325/06C08K7/24C08K3/042C08K3/14C08K9/10
Inventor 石庆伟梁会明
Owner 山西利源中天保温防腐工程有限公司
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