A kind of preparation method of flame-retardant polyurea elastomer coating

A polyurea elastomer and flame-retardant technology, which is applied in the field of preparation of flame-retardant polyurea elastomer coatings, can solve the problems of reduced mechanical properties, difficulty in controlling the viscosity of component B, and hindering combustion.

Active Publication Date: 2020-10-23
长沙盾甲新材料科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN201010606500.1 discloses a polyurea intumescent fireproof coating, component A includes: isocyanate prepolymer, component B includes: amino-terminated polyether, polyamine chain extender, diluent, carbon forming catalyst, forming Charcoal agent, foaming agent, flame retardant, smoke suppressant, pigment and filler, additive, mixed solvent, the weight ratio of A and B components is 1:5-1:7, the paint should be burnt into charcoal by paint film, Forming a carbonized layer, hindering the mechanism of combustion and flame retardant, but due to the addition of more carbon-forming substances and fillers, the viscosity of component B is not easy to control, and it is more difficult to use spraying
Chinese patent CN201310709700.3 discloses a spray-on flame-retardant and antistatic polyurethane elastomer. Component A is composed of 40-60 parts of isocyanate and 40-60 parts of phosphorus-containing flame-retardant polyol, and component B is composed of 0-30 parts of expanded polyol. Chain agent, 0-30 parts of polyether polyol, 10-75 parts of amino-terminated polyether, 0-30 parts of carbon nanotube slurry, 0-3 parts of pigment, 0-3 parts of additives, because polyurea contains A large amount of phosphorus-containing flame-retardant polyols improves the flame-retardant properties of polyurea, but causes the viscosity of the resin to increase, and the mechanical properties of the curing are reduced

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 kind of preparation method of flame-retardant polyurea elastomer coating
  • A kind of preparation method of flame-retardant polyurea elastomer coating
  • A kind of preparation method of flame-retardant polyurea elastomer coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The present invention also provides a preparation method of polyurea elastomer coating, comprising the following steps:

[0036] (1) Mix the dehydrated siloxane polyether glycol with diisocyanate and diluent uniformly in the reaction kettle, and then react at 80~95℃ for 2~4h to obtain component A;

[0037] (2) Mix the dehydrated amino-terminated polyether and dehydrated amine chain extender with organic aluminum hypophosphite, polytetrafluoroethylene, ammonium polyphosphate, dipentaerythritol and additives in the reaction kettle. Stir at 120° C. for 1-2 h to obtain component B.

[0038] According to the present invention, in order to optimize the reaction efficiency, the present invention also dehydrates the raw materials under reduced pressure before the reaction. The pressure is 0.02~0.1MPa, and the time is 1~3h.

[0039]According to the present invention, in order to optimize the reaction efficiency, the present invention also conducts decompression dehydration on ...

Embodiment 1

[0044] The content of each raw material in component A and component B in this example is shown in Table 1.

[0045] (1) dehydrate 40 parts by weight of siloxane polyether diol at a temperature of 110° C. and a pressure of 0.05 MPa for 2 h, and then dehydrate the dehydrated siloxane polyether diol with 55 parts by weight of 4, 4'-MDI and 5 parts by weight of DOP were uniformly mixed in the reaction kettle, and then reacted at 90° C. for 3 hours to obtain component A;

[0046] (2) 50 parts by weight of D-2000 and 30 parts by weight of Ethacure300 were dehydrated for 1.5 hours at a temperature of 110° C. and a pressure of 0.05 MPa, and then dehydrated D-2000, dehydrated Ethacure300 and 8 parts by weight were dehydrated Organic aluminum hypophosphite, 1 part by weight of polytetrafluoroethylene, 8 parts by weight of ammonium polyphosphate, and 3 parts by weight of dipentaerythritol are uniformly mixed in a reaction kettle, and stirred at 90° C. for 1.5 hours to obtain component B...

Embodiment 2

[0050] The content of each raw material in component A and component B in this example is shown in Table 2.

[0051] (1) dehydrate 50 parts by weight of siloxane polyether diol at a temperature of 110° C. and a pressure of 0.02 MPa for 2 h, then dehydrate the dehydrated siloxane polyether diol with 45 parts by weight of 4, 4'-MDI and 5 parts by weight of DBP were mixed uniformly in the reaction kettle, and then reacted at 85°C for 3 hours to obtain component A;

[0052] (2) 50 parts by weight of D-2000 and 30 parts by weight of Unilink4200 were dehydrated for 2 hours at a temperature of 110°C and a pressure of 0.05MPa, and then dehydrated D-2000, dehydrated Unilink4200 and 6 parts by weight of organic Aluminum hypophosphite, 1 part by weight of polytetrafluoroethylene, 12 parts by weight of ammonium polyphosphate, and 1 part by weight of dipentaerythritol are mixed uniformly in a reaction kettle, and stirred at 100° C. for 1 hour to obtain component B.

[0053] Table 2: Conte...

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

No PUM Login to view more

Abstract

The invention relates to the technical field of paint, in particular to a preparation method of flame-retardant polyurea elastomer paint. The polyurea elastomer paint is prepared from a component A and a component B. The preparation method comprises the following steps: (1) dehydrated siloxane polyether glycol, diisocyanate and a diluent are mixed uniformly in a reaction kettle, and then subjectedto a reaction for 2-4 hours at 80-95 DEG C, and the component A is obtained; (2) dehydrated amino-terminated polyether and a dehydrated amine chain extender are uniformly mixed with organic aluminumhypophosphite, polytetrafluoroethylene, ammonium polyphosphate, dipentaerythritol and additives in a reaction kettle, stirring is performed at 60-120 DEG C for 1-2 h, and the component B is obtained.The polyurea elastic resin prepared from a flame retardant and polyurea resin by compounding has excellent flame retardancy and thermal stability.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation method of a flame-retardant polyurea elastomer coating. Background technique [0002] Spray polyurea elastomer coating is an emerging material that does not contain any volatile organic compounds (VOC) and is environmentally friendly and has high protective performance. [0003] In the prior art, flame-retardant polyurea elastomer coatings are mostly based on halogen-containing flame-retardant systems and water-based systems. With the enhancement of people's awareness of safety and environmental protection, many fields, such as construction, transportation, ships, etc., have put forward higher requirements for fire performance. Halogen-free flame retardants have received extensive attention due to their low toxicity and environmental protection characteristics, and halogen-free flame retardants are the future development trend of flame retardants. Chinese patent ...

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): C09D175/02C09D5/18C08G18/76C08G18/73C08G18/75C08G18/66C08G18/50
CPCC08G18/5024C08G18/5096C08G18/6666C08G18/73C08G18/755C08G18/758C08G18/7614C08G18/7671C08K2003/323C08L2201/02C08L2201/08C09D5/18C09D175/02C08L27/18C08K3/32C08K5/06C08K5/5313
Inventor 罗世彬裘航盛
Owner 长沙盾甲新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap