Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of Schiff base hyperbranched polysiloxane flame retardant and its preparation method and application

A technology of polysiloxane and Schiff base, which is used in the preparation and application of flame retardants, can solve the problems of large addition, poor heat resistance, and inability to meet processing and use requirements, and achieve low heat release, flame retardant The effect of high fuel efficiency

Active Publication Date: 2021-06-18
DONGHUA UNIV
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that phosphorus-based flame retardants are still the main research object in the field of flame-retardant and anti-droplet nylon 6 research. However, phosphorus-based flame retardants are prone to produce toxic intermediate products such as phosphoric acid and metaphosphoric acid during combustion. , and phosphorus-based flame retardants usually have poor heat resistance and are easy to hydrolyze, so they are gradually unable to meet the growing processing and use requirements of the market
However, when silicon-based, nitrogen-based, metal and other flame retardants are used as flame-retardant materials, in order to achieve a better flame-retardant effect, a large amount of addition is usually required, which will inevitably have an adverse effect on the performance of the nylon 6 material.

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
  • A kind of Schiff base hyperbranched polysiloxane flame retardant and its preparation method and application
  • A kind of Schiff base hyperbranched polysiloxane flame retardant and its preparation method and application
  • A kind of Schiff base hyperbranched polysiloxane flame retardant and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example provides a Schiff base hyperbranched polysiloxane flame retardant I (PCNSi) and Schiff base hyperbranched polysiloxane flame retardant nylon 6 composite material I, the specific preparation steps are as follows:

[0028] Step 1: Preparation of Schiff base hyperbranched polysiloxane flame retardant (PCNSi):

[0029] like figure 2 As shown, in parts by mole, 15 parts of benzaldehyde, 15 parts of 1,3 aminopropyltriethoxysilane and 80 parts of ethanol are mixed and dissolved under nitrogen, and 2 parts of anhydrous magnesium sulfate are added. After fully stirring, react at 80°C for 8 hours; then add 10 parts of diphenylsilanol under nitrogen according to molar weight, raise the temperature to 120°C, and stir for 5 hours to obtain Schiff base overrun Polysiloxane flame retardant Ⅰ;

[0030] Step 2: Preparation of Schiff base hyperbranched polysiloxane flame retardant nylon 6 composite material:

[0031] In parts by weight, add 100 parts of nylon 6 slices an...

Embodiment 2

[0034] This example provides a Schiff base hyperbranched polysiloxane flame retardant II (PCNSi) and Schiff base hyperbranched polysiloxane flame retardant nylon 6 composite material II, the specific preparation steps are as follows:

[0035] Step 1: Preparation of Schiff base hyperbranched polysiloxane flame retardant (PCNSi):

[0036] like image 3 As shown, in parts by mole, mix and dissolve 10 parts of benzaldehyde, 10 parts of 1,3 aminopropyltrimethoxysilane and 80 parts of toluene under nitrogen, add 2 parts of barium hydroxide, and stir Then react at 80°C for 8 hours; then add 10 parts of methylphenylsilanediol under nitrogen in molar parts, raise the temperature to 120°C, and stir for 5 hours to obtain the Schiff base overrun Polysiloxane flame retardant II;

[0037] Step 2: Preparation of Schiff base hyperbranched polysiloxane flame retardant nylon 6 composite material:

[0038] In parts by weight, add 100 parts of nylon 6 slices and 4 parts of the Schiff base hype...

Embodiment 3

[0041] This example provides a Schiff base hyperbranched polysiloxane flame retardant III (PCNSi) and Schiff base hyperbranched polysiloxane flame retardant nylon 6 composite material III, the specific preparation steps are as follows:

[0042] Step 1: Preparation of Schiff base hyperbranched polysiloxane flame retardant (PCNSi):

[0043] like Figure 4As shown, in parts by mole, 10 parts of benzaldehyde, 10 parts of γ-aminoethylaminopropyltrimethoxysilane and 80 parts of chloroform are mixed and dissolved under nitrogen, and 2 parts of calcium oxide are added to fully After stirring, react at 60°C for 8 hours; then add 10 parts of diphenyldimethoxysilane under nitrogen in molar parts, raise the temperature to 100°C, and stir for 5 hours to obtain the Schiff base Based hyperbranched polysiloxane flame retardant III;

[0044] Step 2: Preparation of Schiff base hyperbranched polysiloxane flame retardant nylon 6 composite material:

[0045] In parts by weight, add 100 parts of...

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 present invention relates to a Schiff base hyperbranched polysiloxane flame retardant and its preparation method and application. The structural formula of the Schiff base hyperbranched polysiloxane flame retardant is as follows: the Schiff base hyperbranched The preparation method of the polysiloxane flame retardant comprises: adding 10-20 parts of benzaldehyde, 10-20 parts of amino-terminated siloxane, and 60-80 parts of organic solvent into a reaction vessel in parts by molar weight , replace the air in the container with nitrogen, add desiccant, react at 50-80°C for 5-8 hours, add 5-10 parts of phenylsiloxane, raise the reaction temperature to 100-120°C, and reflux nitrogen for 3 ~5h later that is. Then, the designed and synthesized Schiff base hyperbranched polysiloxane flame retardant is added to the blending system of nylon 6. In the case of a small amount of addition, a halogen-free, droplet-free, flame-retardant Good flame retardant nylon 6 compound.

Description

technical field [0001] The invention belongs to the field of flame retardant preparation and application thereof, in particular to a Schiff base hyperbranched polysiloxane flame retardant and its application in the preparation of flame retardant non-droplet nylon 6 composite material. Background technique [0002] Nylon 6 is a "general-purpose" material widely used in the fields of textiles, garments and engineering plastics, but its extremely flammable characteristics severely limit the application of nylon 6 in some special fields. Nylon 6 burns fast, releases high heat, releases a large amount of smoke, and is accompanied by serious droplet phenomenon during the combustion process, which has caused varying degrees of damage to the human body and the ecological environment. Especially the droplet phenomenon, it is easy to ignite the surrounding materials, cause secondary fire, and then expand the scope of fire. Therefore, how to reduce the droplet has become a research ho...

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): C08G77/26C08G77/06C08L77/02C08L83/08
CPCC08G77/06C08G77/26C08L77/02C08L2201/02C08L83/08
Inventor 李发学范硕祝陈晨吴德群王学利俞建勇
Owner DONGHUA UNIV