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

Unsaturated polyester resin for pultrusion and preparation method thereof

A polyester resin and unsaturated technology, which is applied in the field of unsaturated polyester resin for pultrusion and its preparation, can solve the problems of high preparation cost, chemical corrosion resistance, poor heat resistance and mechanical properties, and achieve improved compatibility performance, improving tensile and flexural modulus, and reducing cost

Active Publication Date: 2021-08-27
湖北旺林新材料科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current pultrusion molding process is developing rapidly. Common unsaturated polyester resins for pultrusion are generally synthesized using phthalic anhydride as a saturated dibasic acid. In practical applications, it is found that the resin materials of the prior art still cannot fully meet the current pultrusion requirements. Formed product requirements, problems such as chemical corrosion resistance, heat resistance, and poor mechanical properties have always existed
Moreover, as the price of phthalic anhydride continues to rise, the preparation cost of unsaturated polyester resin for pultrusion is also getting higher and higher

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
  • Unsaturated polyester resin for pultrusion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described below in conjunction with embodiment, and embodiment 3 is the best embodiment of the present invention.

[0026] The preparation method of unsaturated polyester resin for pultrusion in the following examples and comparative examples all adopts the following preparation method:

[0027] 1) Under the protection of nitrogen, put polyol terephthalate, methylpropylene glycol and ethylene glycol, phthalic anhydride, benzoic acid, maleic anhydride, antioxidant in the reaction stage, and polymerization inhibitor in the reaction stage In the reaction kettle, stir and heat up, control the temperature of the kettle to be stable at 140~145°C and keep it for 45 minutes, then uniformly raise the temperature to 158~163°C at a rate of 15°C / h, and keep it warm for 1 hour after reacting water; continue to raise the temperature, and control the heating rate at 10~12°C / h, heat up to 210°C and then keep warm for polycondensation reaction. Un...

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
acid valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses unsaturated polyester resin for pultrusion and a preparation method thereof, and belongs to the technical field of pultrusion resin and a preparation method thereof. A pultrusion process is a method for continuously producing a composite material profile, the current pultrusion process develops rapidly, and common unsaturated polyester resin for pultrusion is generally synthesized by adopting phthalic anhydride as saturated binary acid. Maleic anhydride, phthalic anhydride, benzoic acid, polyhydric alcohol terephthalate, ethylene glycol and methylpropanediol are utilized and matched with one another, and particularly, the polyhydric alcohol terephthalate is successfully introduced into the unsaturated polyester resin; and the chemical corrosion resistance and the mechanical property of the unsaturated polyester resin for pultrusion are effectively improved, and the application field of the resin is widened.

Description

technical field [0001] An unsaturated polyester resin for pultrusion and a preparation method thereof, belonging to the technical field of unsaturated polyester resin for pultrusion and a preparation method thereof. Background technique [0002] The pultrusion process is a method of continuous production of composite material profiles. The products are widely used in construction, transportation, electrical engineering, aerospace and other technical fields. Unsaturated polyester resin is used as the matrix resin. The performance of the resin matrix determines the heat resistance of the material. Performance, water resistance, chemical resistance, toughness and so on. [0003] The current pultrusion molding process is developing rapidly. Common unsaturated polyester resins for pultrusion are generally synthesized using phthalic anhydride as a saturated dibasic acid. In practical applications, it is found that the resin materials of the prior art still cannot fully meet the cu...

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): C08G63/547C08G63/78
CPCC08G63/547C08G63/78
Inventor 张富林张敬柱杨国庆吴洪沛杨庚张竞文
Owner 湖北旺林新材料科技有限公司
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