Waterproof insulation board for constructional engineering

A technology for construction engineering and thermal insulation boards, which is applied in building thermal insulation materials, thermal insulation, building components, etc., can solve the problems of low elasticity, poor fire performance, and high acidity.

Pending Publication Date: 2020-09-01
安徽百维新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phenolic insulation board produced by phenolic resin has good fire resistance, high temperature resistance, and low smoke performance, but the biggest disadvantage of the phenolic insulation board is its high brittleness and high acidity.
Due to the high brittleness of the phenolic insulation board, there are problems such as falling powder, low elasticity, low compressive strength, and substandard thermal conductivity when the phenolic insulation board is used, and the inherent excellent fireproof performance has not been well utilized. Expansion, and at the same time bring a lot of inconvenience to transportation and construction
Due to the high acidity, the phenolic insulation board will be corrosive to a certain extent in contact with metal and cement-based materials, which limits its application range

Method used

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  • Waterproof insulation board for constructional engineering
  • Waterproof insulation board for constructional engineering
  • Waterproof insulation board for constructional engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of modified phenolic resin specifically comprises the following steps:

[0025] S1. Preparation of silicon-based modifier

[0026] Weigh 100mmol 1,1,1,3,5,5,5-heptamethyltrisiloxane and 105mmol 6-chloro-1-hexene into the reaction kettle and 600ml of solvent isopropanol, stir and dissolve, pass Into the nitrogen protection, then add 14mmol metal platinum catalyst chloroplatinic acid, continue to pass nitrogen for 15min, until the air in the reactor is completely replaced, turn off the nitrogen, heat up to 80°C while stirring, and carry out the hydrosilylation reaction for 10h. After the reaction, the solvent and unreacted 6-chloro-1-hexene were distilled off under reduced pressure to obtain the silicon-based modifier shown in formula A1;

[0027] S2, preparation of modified phenolic resin

[0028] Weigh 18g of silicon-based modifier A1, 130g of solid phenolic resin powder and 2L of solvent tert-amyl alcohol into the reaction kettle. After stirrin...

Embodiment 2

[0032] A waterproof insulation board for construction engineering, comprising the following raw materials in parts by weight: 80 parts of modified phenolic resin, 25 parts of hollow vitrified microspheres, 16 parts of fly ash, 20 parts of polyacrylate emulsion, 7 parts of polypropylene fiber, 5 parts of sodium carboxymethylcellulose, 5.5 parts of foaming agent, 4.5 parts of surfactant;

[0033] Described whipping agent is n-hexane;

[0034] Described tensio-active agent is sodium dodecylbenzenesulfonate;

[0035] The preparation method of the waterproof insulation board for construction projects is as follows: adding modified phenolic resin, hollow vitrified microspheres, fly ash, polyacrylate emulsion, polypropylene fiber, sodium carboxymethyl cellulose, into a mixing tank Pre-mixing, then put the pre-mixture into the mixer, then add foaming agent and surfactant, stir and mix evenly, raise the temperature to 75°C, keep stirring for 15 minutes, and then pour into molding to o...

Embodiment 3

[0037] A waterproof insulation board for construction engineering, comprising the following raw materials in parts by weight: 100 parts of modified phenolic resin, 30 parts of hollow vitrified microspheres, 14 parts of fly ash, 16 parts of polyacrylate emulsion, 8.5 parts of polypropylene fiber, 6.5 parts of sodium carboxymethylcellulose, 6 parts of foaming agent, 7 parts of surfactant;

[0038] Described whipping agent is n-hexane;

[0039] Described tensio-active agent is sodium dodecylsulfonate;

[0040] The preparation method of the waterproof insulation board for this construction project is: adding modified phenolic resin, hollow vitrified microspheres, fly ash, polyacrylate emulsion, polypropylene fiber, sodium carboxymethyl cellulose, into a mixing tank for Pre-mixing, then put the pre-mixture into the mixer, then add foaming agent and surfactant, stir and mix evenly, raise the temperature to 70°C, keep stirring for 20 minutes, and then pour into molding to obtain a w...

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PUM

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Abstract

The invention discloses a waterproof insulation board for constructional engineering. The composite material is prepared from, by weight: 80 to 100 parts of modified phenolic resin, 22 to 30 parts ofhollow glass beads, 14 to 20 parts of fly ash, 15 to 25 parts of polyacrylate emulsion, 5 to 9 parts of polypropylene fiber, 3 to 7 parts of sodium carboxymethyl cellulose, 5.5 to 9 parts of foaming agent and 4.5 to 7 parts of surfactant. Modified phenolic resin as matrix, phenolic resin is modified by adopting a silicon-based modifier; carrying out etherification reaction on the silicon-based modifier and phenolic resin; modified phenolic resin, the acidity of the phenolic resin is reduced by etherification; the flexible fat long chain and the organic silicon are bonded on the phenolic resin;the toughness of the phenolic resin is greatly improved; the modified phenolic resin and other components are subjected to mixing, foaming and casting molding to prepare the high-strength thermal insulation board, in addition, organic silicon with low surface activity is introduced into the phenolic resin, the thermal insulation board is endowed with good hydrophobicity due to the existence of silicon atoms, and the prepared thermal insulation board has good waterproofness.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a waterproof thermal insulation board for construction engineering. Background technique [0002] Insulation board is a commonly used material to isolate the indoor environment from the external environment. When the insulation board is used, it is often coated with mortar on the outside to play a protective role. However, the mortar has good water absorption performance, which makes it easy for rainwater to infiltrate the insulation board. Some insulation boards have average strength and poor waterproof effect. After soaking in rainwater, they will absorb water, which will easily lead to a reduction in service life and affect the safety performance of the building wall. [0003] Phenolic insulation board is an organic thermosetting high-efficiency insulation material. Especially in recent years, with the gradual improvement of building energy sav...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L33/04C08L23/12C08L1/28C08K7/28C08K7/26C08J9/14C08G8/36E04B1/80E04B1/66
CPCC08J9/141C08J9/0061C08J9/0085C08J9/0066C08G8/36E04B1/80E04B1/66C08J2203/14C08J2361/14C08J2433/04C08J2423/12C08J2401/28C08K7/28C08K7/26Y02A30/242Y02B80/10
Inventor 祝春夏肖杰
Owner 安徽百维新材料有限公司
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