Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Intumescent flame retardant for polyurethane, flame-retardant polyurethane and preparation of flame-retardant polyurethane

An intumescent flame retardant, polyurethane technology, applied in the field of flame retardants, can solve the problems of poor compatibility and dispersion of polyurethane matrix, damage to the physical and mechanical properties of the substrate, and deterioration of the physical and mechanical properties of the substrate, so as to maintain the physical and mechanical properties of the substrate. Effects of mechanical properties, suppression of smoke release, and improvement of limiting oxygen index

Pending Publication Date: 2022-06-28
SICHUAN UNIV
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame retardant introduced in the second way often destroys the physical and mechanical properties of the substrate while realizing polyurethane flame retardancy, and the compatibility and dispersion in the polyurethane matrix are not good
The third flame retardant method, while achieving polyurethane flame retardant, tends to deteriorate the physical and mechanical properties of the substrate, and the operation is complicated

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
  • Intumescent flame retardant for polyurethane, flame-retardant polyurethane and preparation of flame-retardant polyurethane
  • Intumescent flame retardant for polyurethane, flame-retardant polyurethane and preparation of flame-retardant polyurethane
  • Intumescent flame retardant for polyurethane, flame-retardant polyurethane and preparation of flame-retardant polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] First, sodium tartrate and linseed gum were added to a ball mill in a mass ratio of 2:1, and after ball milling for 1 hour, the flame retardant composition was taken out and dried in a blast drying oven at 80°C for 4 hours to obtain an intumescent flame retardant. The residual carbon content of the flame retardant in the thermogravimetric test in the air atmosphere is 56%, and the expansion into carbon under the heating condition of 300 ° C is 22 times the original volume.

[0066] Then, 80 parts by weight of polyether polyol (hydroxyl value 30mgKOH / g), 20 parts by weight of grafted polyether polyol (hydroxyl value 20mgKOH / g), 1 part by weight of water, 1 part by weight of triethanolamine, 0.5 parts by weight of pore-opening agent, 1.0 parts by weight of silicone oil, 0.1 part by weight of foaming tertiary amine catalyst, 0.4 part by weight of gel-type tertiary amine catalyst, and 15 parts by weight of intumescent flame retardant are added to the same container, and mixe...

Embodiment 2

[0068] First, lignosulfonic acid and magnesium carbonate (the molar ratio of sulfonate to magnesium ion is 1:2) are reacted in water at 60 degrees Celsius until the pH is stable, and then continue to react for 0.5 h, then the solvent is removed, and the preparation is made after drying. Obtain magnesium lignosulfonate; then add magnesium lignosulfonate and magnesium gluconate into a ball mill at a mass ratio of 2:3, and after ball milling for 1.5 hours, take out the flame retardant compound and place it in a blast drying oven at 80 °C for drying After 4 hours, an intumescent flame retardant was obtained. The residual carbon content of the flame retardant in the thermogravimetric test in an air atmosphere is 65%, and the expansion into carbon under heating conditions at 300 ° C is 47 times the original volume.

[0069]Then, 80 parts by weight of polyether polyol (hydroxyl value 30mgKOH / g), 20 parts by weight of grafted polyether polyol (hydroxyl value 20mgKOH / g), 1 part by weig...

Embodiment 3

[0071] First, react malic acid and cesium hydroxide (the molar ratio of carboxylate to cesium ion is 1:1) in ethanol at room temperature until the pH is stable, and then continue the reaction for 2 h, then remove the solvent and dry to obtain apples Cesium acid. 80 parts by weight of polyether polyol (hydroxyl value 30mgKOH / g), 20 parts by weight of grafted polyether polyol (hydroxyl value 20mgKOH / g), 1 part by weight of water, 1 part by weight of triethanolamine, 0.5 part by weight parts of pore-opening agent, 1.0 parts by weight of silicone oil, 0.1 part by weight of foaming tertiary amine catalyst, 0.4 part by weight of gel-type tertiary amine catalyst, and 20 parts by weight of cesium malate were added to the same container, stirred and mixed at high speed, and then It is blended with 35 parts by weight of modified isocyanate MDI (NCO content: 26%), quickly poured into a mold, and heated and cured at 80°C to obtain a flame-retardant flexible polyurethane foam; after testin...

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
hydroxyl valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Shore hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to an intumescent flame retardant for polyurethane and a preparation method of the intumescent flame retardant, which can endow the polyurethane with flame retardance and low smoke, and belongs to the field of flame retardants. The invention provides an intumescent flame retardant for polyurethane. The intumescent flame retardant is a compound or composition containing an alkaline organic metal component and a carbon source substance component at the same time. The invention provides a flame retardant for polyurethane. The obtained flame retardant is only composed of alkaline organic metal salt and a carbon source substance according to a proper proportion; the flame retardant does not contain phosphorus, halogen and other traditional flame retardant elements, and when the flame retardant is used for flame retardant polyurethane, the flame retardant can endow the polyurethane with flame retardancy and low smoke property.

Description

technical field [0001] The invention relates to an intumescent flame retardant for polyurethane and a preparation method thereof, which can impart flame retardancy and low smoke property to polyurethane, and belong to the field of flame retardants. Background technique [0002] Polyurethane materials include flexible polyurethane foam, rigid polyurethane foam, polyurethane elastomer, polyurethane coating, etc., so it is known as the "fifth largest plastic" among many organic polymer materials. Because of its excellent performance, it is widely used in many fields of the national economy, and its product applications involve light industry, chemical industry, electronics, textiles, medical treatment, construction, building materials, automobiles, high-speed rail, national defense, aerospace, aviation, etc. [0003] However, because the polyurethane structure contains urethane repeating units and urea groups with low thermal stability, its thermal decomposition temperature is ...

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 Applications(China)
IPC IPC(8): C08K5/098C08K3/22C08K3/26C08K5/092C08K5/138C08K5/1545C08L1/28C08L3/08C08L5/00C08L5/04C08L41/00C08L75/08C08L97/00C08G18/48C08G18/32C08G18/66C08G18/76C08J9/14C09D175/04C09D5/18C08G101/00
CPCC08K5/098C08K3/26C08K5/092C08K3/22C08K5/138C08K5/1545C08L5/00C08L97/005C08L1/286C08L3/08C08L5/04C08L41/00C08G18/3281C08G18/4804C08G18/6688C08G18/7671C08G18/48C08G18/3234C08G18/6685C08J9/141C08J9/0061C08J9/0023C08L75/08C09D175/04C09D5/185C08K2003/267C08K2003/2206C08L2201/02C08L2201/22C08G2101/00C08G2110/0008C08G2110/0025C08G2110/0083C08J2375/08C08J2497/00C08J2401/28C08J2203/14
Inventor 王玉忠陈明军赵海波汪婷郭德明邓聪
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com