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

Combined polyether, hard polyurethane foam and preparation method thereof, and water heater

A technology of rigid polyurethane and combined polyether, applied in fluid heaters, lighting and heating equipment, etc., can solve problems such as failure to meet environmental protection requirements, ozone layer destruction, etc., achieve zero ozone depletion potential, low environmental protection requirements, and thermal conductivity low effect

Pending Publication Date: 2018-09-07
WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used rigid polyurethane foam is prepared by using a blowing agent including HCFC-141b (a fluorodichloroethane), and HCFC-141b (a fluorodichloroethane) has a destructive effect on the ozone layer and cannot Meet environmental protection requirements

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
  • Combined polyether, hard polyurethane foam and preparation method thereof, and water heater

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0059] The invention also provides a preparation method of rigid polyurethane foam.

[0060] refer to figure 1 , in one embodiment of the present invention, the preparation method of this rigid polyurethane foam comprises the following steps:

[0061] Step S10, uniformly mixing the organic isocyanate and the combined polyether;

[0062] Step S20, injecting the uniformly mixed composition into the foaming cavity for foaming.

[0063] In this embodiment, the specific structure of the combination polyether refers to the above-mentioned embodiment, at least, the combination polyether includes a polyol and a foaming agent, wherein the polyol includes polyether polyol and / or polyester polyol, and the foaming agent including hexafluorobutene. In this way, the rigid polyurethane foam prepared by the preparation method of the rigid polyurethane foam of the present invention is environmentally friendly and has a low thermal conductivity, so that the water heater with the inner tank c...

Embodiment

[0071] Raw material formula: the polyether polyol A of 40 weight parts, the polyether polyol B of 6 weight parts, the polyether polyol C of 30 weight parts, the polyester polyol of 10 weight parts, the composite flame retardant of 8.5 weight parts ( DEEP and DMPP weight ratio 1:1), 0.4 parts by weight of foaming catalyst (PC-12), 1.9 parts by weight of gel catalyst (PC-8), 0.5 parts by weight of polymerization catalyst (TMR-2), 2.0 parts by weight Parts of silicon foam stabilizer, 0.7 parts by weight of water, 5.5 parts by weight of HFC-245fa, 25 parts by weight of FEA-1100, 126.69 parts by weight of PM2010 (organic isocyanate) of Yantai Wanhua.

[0072] Preparation method: pre-mix the components in the above raw material formula except organic isocyanate in a stirring pressure tank; The organic isocyanate contained in the black material working tank is injected into the water heater water tank mold with vent holes on the top through a high-pressure mixing head under a pressur...

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
viscosityaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses combined polyether, hard polyurethane foam and a preparation method thereof, and a water heater. The combined polyether comprises polyol and a foaming agent, wherein the polyolcomprises polyether polyol and / polyester polyol, and the foaming agent comprises hexafluorobutene. With a technical scheme in the invention, a hard polyurethane foam material prepared from the combined polyether is environment-friendly and has a low heat conduction coefficient.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a composite polyether, rigid polyurethane foam, a preparation method thereof and a water heater. Background technique [0002] In the water heater industry, the outer surface of the inner tank is usually covered with rigid polyurethane foam to reduce the heat loss of the water in the inner tank and improve the energy saving capacity of the water heater. However, the currently commonly used rigid polyurethane foam is prepared by using a blowing agent including HCFC-141b (a fluorodichloroethane), and HCFC-141b (a fluorodichloroethane) has a destructive effect on the ozone layer and cannot Meet environmental protection requirements. Contents of the invention [0003] The main purpose of the present invention is to propose a combined polyether, aiming at making the rigid polyurethane foam obtained from the combined polyether environmentally friendly. [0004] To achieve the above obj...

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): C08G18/48C08G18/42C08J9/14C08K5/521C08K5/523C08K5/5333F24H9/00C08G101/00
CPCC08G18/14C08G18/4018C08G18/4208C08G18/4804C08G18/4829C08G2101/00C08J9/141C08J9/146C08K5/521C08K5/523C08K5/5333C08G2110/0025F24H9/0005
Inventor 余远明赵士虎曲绍鹤袁海霞朱洪阳
Owner WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
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