High adjacent position phenolic resin for toughness reinforcing of elastic body and method for producing the same

A technology of phenolic resin and elastomer, which is applied in the field of resin and its preparation, can solve the problems of slow curing and molding of phenolic resin, hinder the curing of phenolic resin, and increase production costs, and achieve fast curing and molding, improved dispersibility, and convenient application Effect

Inactive Publication Date: 2008-05-07
ZHEJIANG JIAMIN PLASTIC
View PDF0 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Rubber-toughened phenolic resin is the most common toughening system. At present, the general-purpose rubber-toughened phenolic resin belongs to physical blending modification. Mixing rubber and phenolic resin on a roll mill is not only labor-intensive, but also time-consuming. The dispersion performance of rubber also has certain limitations
Under high temperature conditions, traditional rubber and phenolic resin blends have poor impact resistance, short service life, and cannot be used stably for a long time
Another method of rubber toughening phenolic resin is to use a co-solvent to dissolve the rubber and phenolic resin first, and then evaporate the solvent. This method takes a long time and is relatively expensive.
Because the dissolution process of rubber is generally a slow process, which takes a long time, and the cost of the selected co-solvent and the process of removing the solvent will increase the production cost. No matter which method is used above, rubber toughened phenolic resin There is also a disadvantage, that is, the introduction of rubber with a large molecular weight into the phenolic resin curing system will hinder the curing of the phenolic resin, making the curing of the phenolic resin slower.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In a 500ml three-necked flask equipped with a stirrer, a condenser, and a thermometer, add 200g of phenol, 10g of powdered nitrile rubber, 138g of formaldehyde, and 2g of zinc acetate, respectively, start stirring, raise the temperature to 100°C, reflux at a constant temperature for 3 hours, and add sulfuric acid Adjust the pH of the reaction system to 2.0, continue the reaction for 1 hour, and start dehydration under reduced pressure until the water content of the resin is less than 0.5% to obtain a high-ortho-position phenolic resin toughened by the elastomer in situ.

Embodiment 2

[0019] In a 500ml three-necked flask equipped with a stirrer, a condenser, and a thermometer, add 200g of phenol, 14g of powdered nitrile rubber, 138g of formaldehyde, and 2g of zinc acetate respectively, start stirring, raise the temperature to 100°C, reflux at a constant temperature for 3 hours, and add sulfuric acid Adjust the pH of the reaction system to 2.0, continue the reaction for 1 hour, and start dehydration under reduced pressure until the water content of the resin is less than 0.5% to obtain a high-ortho-position phenolic resin toughened by the elastomer in situ.

Embodiment 3

[0021] Add 200g phenol, 20g powdered nitrile rubber, 138g formaldehyde and 2g zinc acetate to a 500ml three-necked flask equipped with a stirrer, condenser, and thermometer, respectively, start stirring, raise the temperature to 100°C, reflux at a constant temperature for 3 hours, and add sulfuric acid Adjust the pH of the reaction system to 2.0, continue the reaction for 1 hour, and start dehydration under reduced pressure until the water content of the resin is less than 0.5% to obtain a high-ortho-position phenolic resin toughened by the elastomer in situ.

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 discloses high ortho position formaldehyde phenol resin with elastic toughened, wherein, the elastic body reaches nm-level decentralization in the formaldehyde phenol resin, the content of the elastic body is 3 to 10 percent, and the ortho-para-ratio of the resin is 2.5 to 5. The invention also provides a preparation method of the formaldehyde phenol resin. The invention is characterized in that the high ortho position formaldehyde phenol resin with elastic toughened is prepared by adopting the way of in situ polymerization. Compared with the prior art, the high ortho position formaldehyde phenol resin with elastic toughened of the invention has the advantages of good fluidity, rapid curing and shaping, excellent toughness, simple preparation method, easy practice, etc.

Description

technical field [0001] The invention relates to a resin and a preparation method thereof, in particular to an elastomer-toughened high-ortho-position phenolic resin and a preparation method thereof. Background technique [0002] At present, phenolic resin has the advantages of simple production process, low price, good heat resistance, electrical insulation performance, corrosion resistance, dimensional stability, etc., so it has a wide range of applications in many fields. However, because of the rigid structure containing more benzene rings in the molecular chain, the performance of unmodified phenolic resin is very brittle and poor in toughness, so that the impact strength of phenolic resin products is low and the service life is short, which greatly limits the performance of phenolic resins. The field of application of the resin. In the toughening modification of phenolic resin, a lot of research has been done at home and abroad, and there are mainly two methods: extern...

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): C08L61/14C08G8/28C08L9/02
Inventor 沈培林周大鹏范宏邹沈斌张景富卜志扬万胜兵
Owner ZHEJIANG JIAMIN PLASTIC
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