One-component heat curing polyurethane mixed component

A polyurethane composite material and thermal curing technology, applied in the field of polymer materials, can solve the problems of complex production operation of polyurethane composition, limited production operation time, etc., and achieve the effects of simple operation, sufficient production operation time, and wide application fields.

Pending Publication Date: 2019-10-25
WANHUA CHEM GRP CO LTD
View PDF9 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of complex production operation and limited production operation time in the existing polyurethane composition, and provide a single-component polyurethane composite material, which can be stored stably at room temperature without hardening; easy to use and operate , the production operation time is long, and it can be quickly cured only by heating. It can be applied in the field of composite materials and the production of large parts that require a long curing cycle, and the cost is low.

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
  • One-component heat curing polyurethane mixed component
  • One-component heat curing polyurethane mixed component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Heat 100g of MDI-100 to 60°C, then slowly add 174.9g of FA1 into the stirred isocyanate, continue to stir, react for 6 hours to completely react all NCO groups, continue to stir and cool to 40°C, add 140g of Diallyl phthalate was cooled to room temperature, 1.94 g of tert-butylcatechol and 2.28 g of di-tert-butyl peroxide were added, and the stirring was continued for 22 minutes to obtain a one-component thermosetting polyurethane composition.

[0058] Put the polyurethane combination into an oven at 80°C, and harden within 100-110 minutes.

Embodiment 2

[0060] Heat 100g of liquefied MDI to 70°C, then slowly add 138.7g of FA1 and 29.8g of FA2D into the stirring isocyanate, continue to stir, react for 5 hours to completely react all NCO groups, continue to stir and cool to 40°C , add 500g of butyl acrylate, cool to room temperature, add 2.35g of p-phenol monobutyl ether, 6.05g of di-tert-amyl peroxide, and continue stirring for 15 minutes to obtain a one-component heat-curable polyurethane composition.

[0061] Put the polyurethane combination into an oven at 120°C, and it will harden within 30-40 minutes.

Embodiment 3

[0063] Heat 100g of liquefied MDI to 70°C, then gradually add 207g of FA2D and 22.2g of FM2D into the stirring isocyanate, continue to stir, react for 6 hours to completely react all NCO groups, continue to stir and cool to 40°C, Add 330g of 1,4-butanediol diacrylate, cool to room temperature, add 3.29g of p-phenol monobutyl ether, add 0.64g of di-tert-butyl peroxide and 0.71g of di-tert-amyl peroxide, continue Stir for 25 minutes to obtain a one-component thermosetting polyurethane composite material.

[0064] Put the polyurethane combination into an oven at 80°C, and harden within 110-120 minutes.

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
molecular weightaaaaaaaaaa
Login to view more

Abstract

The invention discloses a one-component heat curing polyurethane mixed component which is prepared from the components in parts by weight: 100 parts of a modified polyurethane oligomer, 50-200 parts of an active compound, a polymerization inhibitor and a radical initiator, wherein the polymerization inhibitor is 0.3-0.7% of the sum of the mass of the modified polyurethane oligomer and the active compound, and the radical initiator is 0.2-0.8% of the sum of the mass of the modified polyurethane oligomer and the active compound; and the modified polyurethane oligomer is prepared by polymerization reaction of a diisocyanate and a polycaprolactone with single and double bond termination, and the molar ratio of NCO/OH in the raw material is 0.8-1.1. Various additives and fillers can be added according to different purposes of use; and the one-component heat curing polyurethane mixed component can be stably stored at room temperature without hardening, is rapidly solidified when heated to 80DEG C or above, and is suitable for production process with different viscosity and long operation time.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a one-component heat-curable polyurethane composite material, which does not harden at room temperature and has suitable storage stability; the composite material is cured by heating to above 80°C , with sufficient operating time. Background technique [0002] As a polymer material, polyurethane can be used to prepare products with various performance requirements, and has excellent toughness, impact resistance, abrasion resistance, and tear resistance. The processing and molding process of polyurethane is simple. It can be used for one-time injection molding or one-time pouring molding. At the same time, different curing processes and properties can be realized through formula design. Compared with traditional unsaturated resin and vinyl ester resin system, polyurethane resin has excellent fatigue resistance and chemical corrosion resistance, good impact toughness, ...

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): C08F283/00C08F220/14C08F220/18C08F222/14C08F218/18C08F218/16C08G18/68
CPCC08F283/008C08G18/68C08F220/14C08F218/18C08F218/16
Inventor 巴龙翰王凯刘赵兴
Owner WANHUA CHEM GRP CO LTD
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