Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation process of flame-retardant polyurethane building insulation board

A technology for building thermal insulation and preparation technology, which is applied in thermal insulation, building components, sustainable manufacturing/processing, etc., can solve the problems of reduced strength, insufficient strength of thermal insulation board polyurethane, easy combustion and fire risk, etc., to achieve the effect of improving strength

Active Publication Date: 2021-09-17
有新绿建(山东)智能科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane is an elastic polymer containing more carbamate groups in the main chain of the molecule. It has the characteristics of high elasticity, wear resistance, strong shock absorption and chemical resistance, but the strength of polyurethane as an insulation board cannot meet the requirements. Requirements, in the prior art, the strength of the insulation board is usually improved by directly adding additives, but the direct mixing of additives through physical action is likely to cause uneven mixing, which in turn leads to a decrease in strength, and because the strength of the polyurethane polymer matrix itself is also low , resulting in lower overall strength
[0003] Polyurethane has low flame retardant performance, is easy to burn and has a greater risk of fire when used on walls. In the prior art, flame retardants are directly added. Due to the poor compatibility between flame The mixing action also tends to reduce the flame retardant performance of polyurethane

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A preparation process of flame-retardant polyurethane building insulation board
  • A preparation process of flame-retardant polyurethane building insulation board
  • A preparation process of flame-retardant polyurethane building insulation board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The specific preparation process of phosphate-based diisocyanate is as follows:

[0039] Step 1. Weigh 2.2 mol of aniline and 6 g of hydrochloric acid with a mass concentration of 30% into the reaction tank at the same time, add 1 mol of crotonaldehyde to it after stirring for 40 minutes, heat up to 150 ° C after stirring for 10 minutes, and there is a large amount of water vapor The water produced by the reaction was evaporated at a vacuum of 6.6kPa, and after 1 hour of heat preservation, the vacuum was increased to 8KPa, and the aniline was recovered by distillation, and then the product was poured into cold water for cooling and crystallization, and filtered to obtain butyl diphenylamine; Infrared analysis of the diaminodiol group shows that at 3353cm -1 and 3421cm -1 Infrared absorption peaks of primary amines appear at

[0040] Step ②, add 1 mol butyl diphenylamine, 1.06 mol DOPO and 2.3L ethanol solution into the reaction tank at the same time, raise the tempera...

Embodiment 2

[0050] The specific preparation process of polyisocyanate-based glass fiber is as follows:

[0051] Step S1: Weigh 1kg of glass fiber powder dried in an oven at 150°C to constant weight, then add 0.23kg of (3-aminopropyl)trimethoxysilane to 6L of absolute ethanol and stir to dissolve, then add glass fiber to it powder, heat up to 110°C, reflux and stir for 1.5h, then filter and dry to obtain surface-treated glass fiber powder;

[0052] Step S2: Add 64g of JQ-4 glue and 100g of the surface-treated glass fiber powder prepared in step S1 to 400mL of chlorobenzene solution at the same time, stir and react for 40-50min at room temperature, then filter, wash the filter residue with ethanol for 3-4 times and soak in ethanol Overnight, then dry to obtain polyisocyanate-based glass fiber; polyisocyanate-based glass fiber is carried out infrared analysis, detection shows that, 2259cm -1 The characteristic absorption peak of the R-N=C=O bond appeared at .

[0053] (3) Examples and comp...

Embodiment 3

[0055] A preparation process of flame-retardant polyurethane building insulation board, the specific preparation process is as follows:

[0056] In the first step, 4.26 mol of aniline and 11.6 g of hydrochloric acid solution with a mass concentration of 30% were simultaneously added to the reaction tank and stirred for 20-30 minutes to form a salt, then 2 mol of dihydroxyacetone was added thereto, and the temperature was raised to 146 ° C after stirring for 8 minutes. The water generated by the reaction was evaporated under a vacuum degree of 6.6kPa, and the aniline was recovered by distillation after the heat preservation reaction for 1 hour, and then the product was poured into cold water for cooling and crystallization, and filtered to obtain diol-based diphenylamine. It can be seen from the detection that at 3356cm -1 and 3423cm -1 Infrared absorption peaks of primary amines appear at

[0057] In the second step, 1 kg of diol-based diphenylamine and 2 L of acetone soluti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
limiting oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation process of a flame-retardant polyurethane building insulation board. The specific preparation process is as follows: flame-retardant high-strength TPU, foaming agent AC, dibutyltin dilaurate, dimethyl silicone oil and 1,4 butyl tin The diol is added into a high-speed mixer and mixed evenly, then the mixed material is added into an injection molding machine for injection foaming, and then naturally cooled to room temperature to obtain a flame-retardant polyurethane insulation board. Polymerization is carried out between phosphate-based diisocyanate and polyisocyanate-based glass fibers and polymerized polyol monomers through cross-linking in the present invention, and two isocyanates of phosphate-based diisocyanate are directly connected on two benzene rings, and cross-linked Finally, the content of benzene rings on the network structure is increased. At the same time, due to the high strength of polyisocyanate-based glass fibers and polymerized polyol monomers, the polymerized polyol monomers are polymerized by phosphate-based diisocyanate and polyisocyanate-based glass fibers. Polyurethane prepared after alternate cross-linking polymerization has higher strength.

Description

technical field [0001] The invention belongs to the field of heat preservation board preparation, and relates to a flame-retardant polyurethane heat preservation board and a preparation process thereof. Background technique [0002] Polyurethane is an elastic polymer containing more carbamate groups in the main chain of the molecule. It has the characteristics of high elasticity, wear resistance, strong shock absorption and chemical resistance, but the strength of polyurethane as an insulation board cannot meet the requirements. Requirements, in the prior art, the strength of the insulation board is usually improved by directly adding additives, but the direct mixing of additives through physical action is likely to cause uneven mixing, which in turn leads to a decrease in strength, and because the strength of the polyurethane polymer matrix itself is also low , resulting in lower overall strength. [0003] Polyurethane has low flame retardant performance, is easy to burn a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/10C08L75/04C08K9/06C08K9/04C08K7/14C08G18/32C08G18/64C08G18/65C08G18/77C07F9/6574E04B1/80C08G101/00
CPCC07F9/657172C08G18/3206C08G18/6438C08G18/6511C08G18/776C08G2101/00C08J9/009C08J9/103C08J2203/04C08J2375/04E04B1/80Y02B80/10Y02P20/10Y02A30/242
Inventor 周玉
Owner 有新绿建(山东)智能科技有限公司