Modified polystyrene board and preparation method thereof

A polystyrene board, modified technology, applied in the field of building materials, can solve the problems affecting the flatness of the board, mixed resin agglomeration, acidity of the board, etc., and achieve the effect of stable board performance, strong adhesion and excellent performance of the board

Inactive Publication Date: 2018-05-29
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many defects in the production and processing technology of thermosetting resin modified polystyrene board, mainly including: 1. The production raw materials are basically based on thermosetting phenolic resin, which leads to resin agglomeration mixed in the board, which affects the flatness of the board when cutting; 2. According to the curing principle of phenolic resin, acid curing agent will be used in the reaction curing during the mixing process, which will cause the board to appear acidic. In the thin plastering system, the board will easily react with the alkaline mortar, causing the board to fall off, etc. Phenomenon
[0003] CN104744885B discloses a resin composition, a graphite polystyrene board and a preparation method thereof, comprising: a thermosetting resin mixed liquid, a curing agent, and the curing agent includes, in parts by mass: 5-20 parts by mass of boric acid, benzenesulfonic acid 30-50 parts by mass, 10-30 parts by mass of p-toluenesulfonic acid, 0-20 parts by mass of ethyl sulfate, 5-10 parts by mass of magnesium oxide, 5-10 parts by mass of aluminum hydroxide, 5-10 parts by mass of aluminum silicate , 0.2-5 parts by mass of graphite particles, the thermosetting resin mixture includes: 60-80 parts by mass of phenolic resin, 20-40 parts by mass of furfural resin, 0.1-20 parts by mass of melamine formaldehyde resin, due to the addition of The thermosetting resin mixture and curing agent have improved the combustion performance of the graphite polystyrene board. However, the board is generally acidic, and the reaction with the alkaline mortar will easily cause the board to fall off.
CN104031325A discloses a biomass-modified polystyrene foam board and a preparation method thereof. The raw materials for its preparation include expandable polystyrene particles, a thermosetting resin, a curing agent, and a flame retardant. The thermosetting resin is a biomass-modified Furan resin, the biomass modified furan resin is mainly made of 15-35 parts by weight of formaldehyde, 5-10 parts by weight of urea, 60-90 parts by weight of furfuryl alcohol and 5-40 parts of lignin. This method uses a thermosetting resin, Cause resin agglomeration mixed in the board, affecting the flatness of the board when cutting
[0004] The polystyrene board products currently produced have certain defects. Therefore, how to develop a new type of polystyrene board to solve the problem that the thermosetting phenolic resin in the polystyrene board needs to be cured with acid to cause the board to show acidity, so that the whole process is not difficult. An acid curing agent is needed to make it more stable and have stronger adhesion, which is a problem that needs to be solved urgently

Method used

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  • Modified polystyrene board and preparation method thereof
  • Modified polystyrene board and preparation method thereof
  • Modified polystyrene board and preparation method thereof

Examples

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Embodiment 1

[0050] The preparation raw material of present embodiment comprises the following components by weight:

[0051]

[0052] This embodiment prepares the modified polystyrene board through the following steps:

[0053] (1) Pre-expand polystyrene particles under 0.3MPa pressure for 15 minutes to obtain a pre-expansion density of 10kg / m 3 polystyrene beads;

[0054] (2) Alkaline phenolic resin (the molar ratio of formaldehyde and phenol is 2:1, the viscosity is 800mPa·s), talcum powder, magnesium hydroxide and encapsulated red phosphorus are mixed to form a coating material;

[0055] (3) Fully mix the coating material obtained in step (2) with ethyl acetate and glycerol triacetate (wherein the mass ratio of ethyl acetate to glycerol triacetate is 3:2), and then mix with polystyrene beads The mass ratio of polystyrene beads to coating material is 1:2, a layer of coating layer is attached to the surface of polystyrene beads, dried at 70°C, and molded at a pressure of 0.05MPa for...

Embodiment 2

[0057] The preparation raw material of present embodiment comprises the following components by weight:

[0058]

[0059]

[0060] This embodiment prepares the modified polystyrene board through the following steps:

[0061] (1) Pre-expand polystyrene particles under 0.6MPa pressure for 1min to obtain a pre-expansion density of 18kg / m 3 polystyrene beads;

[0062] (2) Alkaline phenolic resin (wherein the molar ratio of formaldehyde and phenol is 2.7:1, viscosity is 500mPa·s), barite, aluminum hydroxide and encapsulated red phosphorus are mixed to form coating material;

[0063] (3) Fully mix the coating material obtained in step (2) with butyl acetate, and then mix it with polystyrene beads, wherein the mass ratio of polystyrene beads to coating material is 1:1, polystyrene A coating layer was attached to the surface of the vinyl beads, dried at 60°C, and molded at a pressure of 0.03MPa for 1000s to obtain a modified polystyrene board with a pH of 10.3.

Embodiment 3

[0065] The preparation raw material of present embodiment comprises the following components by weight:

[0066]

[0067] This embodiment prepares the modified polystyrene board through the following steps:

[0068] (1) Pre-expand the polystyrene particles under 0.03MPa pressure for 30 minutes to obtain a pre-expanded density of 4kg / m 3 polystyrene beads;

[0069] (2) Alkaline phenolic resin (wherein the molar ratio of formaldehyde and phenol is 2.7:1, viscosity is 700mPa·s), barite, talcum powder, aluminum hydroxide and encapsulated red phosphorus are mixed to form coating material;

[0070] (3) The coating material obtained in step (2) is fully mixed with 1-methoxypropyl acetate, and then mixed with polystyrene beads, wherein the mass ratio of polystyrene beads to coating material is 1 :5, a layer of coating layer is attached to the surface of polystyrene beads, dried at 80°C, and molded at a pressure of 0.08MPa for 300s to obtain a modified polystyrene board with pH=10...

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Abstract

The invention provides a modified polystyrene board and a preparation method thereof. The modified polystyrene board comprises preparation raw materials in parts by weight as follows: 80-120 parts ofpolystyrene granules, 25-200 parts of alkaline phenolic resin, 5-45 parts of inorganic filler, 1-5 parts of a flame retardant and 10-20 parts of a curing agent. The modified polystyrene board preparedwith the method does not need an acid curing agent, pH is larger than 10, the polystyrene board shows strong basicity, so that a thin plastering system is more stable, board falling caused by reaction between the board and mortar is prevented, and adhesion is stronger.

Description

technical field [0001] The invention belongs to the field of building materials and relates to a modified polystyrene board and a preparation method thereof. Background technique [0002] Thermosetting resin modified polystyrene board, as a new type of building energy-saving insulation material, fundamentally overcomes the shortcomings of traditional polystyrene boards such as flammability, shrinkage, melting, and dripping during combustion. Therefore, in the application of polystyrene board modification , almost all use thermosetting resins for modification, among which, the most commonly used is phenolic resin modification. However, there are many defects in the production and processing technology of thermosetting resin modified polystyrene board, mainly including: 1. The production raw materials are basically based on thermosetting phenolic resin, which leads to resin agglomeration mixed in the board, which affects the flatness of the board when cutting; 2. According to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/10C08L25/06C08K13/06C08K9/10C08K3/02C08K3/34C08K3/22C08K5/103C08J9/00
Inventor 唐地源李枝芳沈剑
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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