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POSS modified mercapto containing pentaerythritol ester crosslinked network polymer, and preparation method and applications thereof

A technology of mercaptopentaerythyl ester and cross-network, which is applied in the field of flame retardant materials, and can solve the problems of high specificity, insignificant effect, and large addition amount of flame retardant silicone rubber.

Active Publication Date: 2019-05-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These flame retardants are added in a large amount, the flame retardant efficiency is low, the decomposition temperature is low, the prepared flame retardant silicone rubber has a large proportion, the mechanical properties of the material are seriously deteriorated, and the heat resistance is poor.
In addition, flame-retardant silicone rubber also uses platinum catalysts as flame retardants. This type of flame retardant is expensive, and the effect is not obvious when used alone.

Method used

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  • POSS modified mercapto containing pentaerythritol ester crosslinked network polymer, and preparation method and applications thereof
  • POSS modified mercapto containing pentaerythritol ester crosslinked network polymer, and preparation method and applications thereof
  • POSS modified mercapto containing pentaerythritol ester crosslinked network polymer, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Preparation of 4T-0.5MA0734-3T-TTT

[0045] Using acetone as a solvent, the modified additive POSS (MA0734) was completely dissolved in acetone, and added dropwise to 4T containing 0.1-2% POSS equivalent of di-n-butylamine initiator in an equimolar ratio, and stirred at room temperature for 24 hours. The molar ratio of POSS to 4T is 1:1, and the POSS-modified mercapto-pentaerythyl ester compound is prepared, and then the acetone solvent is removed by rotary evaporation to obtain a solid powder POSS-modified mercapto-containing pentaerythyl ester. Then the mercapto-pentaerythyl esters containing mercapto-pentaerythyl esters modified by 0.5% POSS are completely dissolved in acetone, and 0.2% DMPA photoinitiator and 3T and TTT containing mercapto-pentaerythyls molar equivalents are added to carry out under ultraviolet light Cross-linking, solvent removal, drying to obtain network polymer 4T-0.5MA0734-3T-TTT;

Embodiment 2

[0046] Example 2 Preparation of 4T-1MA0734-3T-TTT

[0047]Using acetone as a solvent, the modified additive POSS (MA0734) was completely dissolved in acetone, and added dropwise to 4T containing 0.1-2% POSS equivalent of di-n-butylamine initiator in an equimolar ratio, and stirred at room temperature for 24 hours. The molar ratio of POSS to 4T is 1:1, and the POSS-modified mercapto-pentaerythyl ester compound is prepared, and then the acetone solvent is removed by rotary evaporation to obtain a solid powder POSS-modified mercapto-containing pentaerythyl ester. Then the mercapto-pentaerythyl esters containing mercapto-pentaerythyl esters modified by POSS with 1% mole fraction are completely dissolved in acetone, and 0.2% DMPA photoinitiator and 3T and TTT containing mercapto-pentaerythyls molar equivalents are added to carry out under ultraviolet light Cross-linking, removing the solvent, and drying to obtain the network polymer 4T-1MA0734-3T-TTT;

Embodiment 3

[0048] Example 3 Preparation of 4T-3MA0734-3T-TTT

[0049] Using acetone as a solvent, the modified additive POSS (MA0734) was completely dissolved in acetone, and added dropwise to 4T containing 0.1-2% POSS equivalent of di-n-butylamine initiator in an equimolar ratio, and stirred at room temperature for 24 hours. The molar ratio of POSS to 4T is 1:1, and the POSS-modified mercapto-pentaerythyl ester compound is prepared, and then the acetone solvent is removed by rotary evaporation to obtain a solid powder POSS-modified mercapto-containing pentaerythyl ester. Then the mercapto-pentaerythyl esters containing mercapto-pentaerythyl esters modified by POSS with 3% mole fraction are completely dissolved in acetone, and 0.2% DMPA photoinitiator and 3T and TTT containing mercapto-pentaerythyls molar equivalents are added to carry out under ultraviolet light Cross-linking, solvent removal, and drying yielded network polymer 4T-3MA0734-3T-TTT.

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Abstract

The invention discloses a POSS modified mercapto containing pentaerythritol ester crosslinked network polymer, and a preparation method thereof. It is confirmed by cone calorimeter method that after modification, polymer heat stability is better, and flame resistance is better. The invention also discloses applications of the POSS modified mercapto containing pentaerythritol ester crosslinked network polymer in preparation of flame retardant materials and / or flame retardant paint.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant materials, and in particular relates to a cage-shaped polysilsesquioxane-based modified cross-network polymer containing mercaptopentaerythyl ester and a preparation method thereof. Background technique [0002] Silicone rubber materials are widely used in industrial production and daily life. They have certain combustion self-extinguishing properties, but their flame retardancy is poor. High flame-retardant silicone rubber is still the focus of current research. At present, the flame retardants that can be used for silicone rubber can be divided into two categories: halogen-containing flame retardants and halogen-free flame retardants. Due to the great environmental pressure of halogen-containing flame retardants, many countries have banned their use. Burning silicone rubber is a research hotspot. [0003] The flame retardants used in halogen-free flame-retardant silicone rubber mainly i...

Claims

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Application Information

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IPC IPC(8): C08G75/045C08L81/02C09D181/02
Inventor 李向梅刘奔奔杨荣杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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