Check patentability & draft patents in minutes with Patsnap Eureka AI!

Toughening agent for polyamide and toughened polyamide by the same

A technology of polyamide and toughening agent, which is applied in the field of toughening agent and its toughened substances, can solve the problems of rigidity-toughness balance in the toughening system, solve the problem of rigidity-toughness balance, reduce modulus loss, and maintain rigidity Effect

Inactive Publication Date: 2010-09-29
BEIJING XINGRUNDA PLASTIC TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the above prior art, the present invention provides a rubber toughening efficiency that can improve the toughness of the system at a very low rubber content, and at the same time maintain the original rigidity of the system to the greatest extent. The toughening agent for polyamide solves the rigid-tough balance problem that has plagued the toughening system for a long time

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
  • Toughening agent for polyamide and toughened polyamide by the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 950 grams of polyethylene are pre-irradiated by a gamma ray radiation source, and the pre-irradiation absorption rate is 15kGy, then the pre-irradiated polyethylene is mixed with 50 grams of functionalized low molecular weight polybutadiene, and the mixture is placed in The modified polyolefin toughening agent is obtained by grafting reaction with a single-screw or twin-screw extruder, the reaction temperature is controlled at 180°C, the screw speed is 30 rpm, and the residence time is 30 seconds to 15 minutes; the functionalized low molecular weight polybutadiene The alkene is a low molecular weight polybutadiene grafted with 20%wt maleic anhydride. Then use 100 grams of modified polyolefin toughener to blend with 900 grams of polyamide 6, put the mixture into a single-screw or twin-screw extruder for melt blending and extrusion, the temperature is controlled at 235 ° C, and the screw speed is 300 rpm / min, a polyamide toughened system is prepared. The cantilever beam...

Embodiment 2

[0023] 800 grams of polyethylene are pre-irradiated by an electron accelerator electron radiation source, and the pre-irradiation absorption rate is 30kGy, then the polyethylene after pre-irradiation is mixed with 200 grams of functionalized low molecular weight polybutadiene, and the mixture is placed in The modified polyolefin toughening agent is obtained by grafting reaction with a single-screw or twin-screw extruder, the reaction temperature is controlled at 200°C, the screw speed is 300 rpm, and the residence time is 1 to 10 minutes; the functionalized low molecular weight polybutadiene Low molecular weight polybutadiene grafted with 17% wt glycidyl methacrylate. Then use 300 grams of modified polyolefin toughening agent to blend with 700 grams of polyamide 6, put the mixture into a single-screw or twin-screw extruder for melt blending and extrusion, the temperature is controlled at 240 ° C, and the screw speed is 250 rpm , to obtain a polyamide toughened system. The can...

Embodiment 3

[0025] 900 grams of polyethylene, 100 grams of functionalized low molecular weight polybutadiene and 0.4 grams of dicumyl peroxide are mixed, and then the mixture is put into a single-screw or twin-screw extruder for grafting reaction to obtain modified polyolefin toughening agent, the reaction temperature is controlled at 180°C, the screw speed is 50 rpm, and the residence time is 1 to 10 minutes; wherein the functionalized low-molecular-weight polybutadiene is low-molecular-weight polybutadiene grafted with 20%wt maleic anhydride , and then use 200 grams of modified polyolefin toughening agent to blend with 800 grams of polyamide 6, put the mixture into a single-screw or twin-screw extruder for melt blending and extrusion, the extrusion temperature is controlled at 235 ° C, and the screw speed is 350 revolutions per minute to prepare a polyamide toughening system with a Charpy notched impact strength of 71KJ / m 2 , the tensile yield strength is 45MPa; while using the maleic a...

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
impact strengthaaaaaaaaaa
tensile yield strengthaaaaaaaaaa
impact strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses toughening agent which is used on polyamide and toughened polyamide. The toughening agent is prepared through the following process which comprises mixing polyolefin which passes through preirradiation or is added with hyperoxide which comprises functional polybutadiene low molecular weight, putting mixture into a single-screw extruder or a twin-screw extruder to conduct grafting reaction to obtain modified polyamide toughening agent, wherein the reaction temperature is controlled between 160 DEG C to 210 DEG C, the rotary speed of screw is 30-400 rotation / minute, and retention time is 30 seconds to 15 minutes. The toughening agent can greatly increase the toughening efficiency of rubber, makes the system gain higher toughness under the condition of low content rubber, also decreases the usage of rubber, reduces the material cost, and simultaneously keeps the original rigidity of polyamide system at a maximum extent, and solves the problem of rigid-tough balance which troubles the toughening system for long-term.

Description

technical field [0001] The invention relates to a toughening agent and its toughened substance, in particular to a toughening agent for polyamide and its toughened polyamide. Background technique [0002] In the process of actual use, polymer materials not only need to have high strength, but also should have good toughness. Adding rubber to polymer materials can increase the toughness of polymer materials. The toughening effect is better than that of pure rubber toughened system. [0003] Since core-shell particles with a pure rubber shell cannot be stored stably, all pre-prepared core-shell particles with a rigid core have a soft rubber intermediate layer outside the rigid core, while the outermost layer is still an extremely thin Rigid resin layer. This core-shell rubber is developed on the basis of the soft core-hard shell rubber prepared by the seed emulsion polymerization method, such as ACR (polybutylacrylate core, methyl methacrylate shell) and MBS (methacrylate b...

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): C08L77/00C08L51/06C08J3/28C08K5/14B29C47/38B29C48/395
CPCB29C2947/92704B29C2947/9259B29C2948/9259B29C2948/92704B29C48/40
Inventor 施德安吴京
Owner BEIJING XINGRUNDA PLASTIC TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com