Modified polymer material and preparation method thereof

A polymer material and modification technology, which is applied in the field of modified polymer materials and its preparation, can solve the problem that polyborosiloxane is difficult to give full play to its advantages, easily sacrifices the processing performance of polymer materials, and cannot fully exert the modification effect and other problems, to achieve the effect of outstanding thermal stability, excellent storage stability, and easy molding

Active Publication Date: 2018-04-20
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are still some deficiencies in using the existing polyborosiloxane for the flame-retardant modification of polymer materials, mainly in the following aspects: 1) the variety of polyborosiloxane is single and cannot meet the requirements of different fields; 2 ) The viscosity of polyborosiloxane is high, and it is often easy to sacrifice the original excellent processing performance of polymer materials; 3) Different solubility parameters lead to poor compatibility between polyborosiloxane and existing polymer materials. problems, ultimately unable to give full play to its excellent modification effect
All in all, the existing polyborosiloxane modified polymer materials have problems such as single variety, poor compatibility, harsh molding process, and difficulty in giving full play to the advantages of polyborosiloxane

Method used

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  • Modified polymer material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Under the conditions of stirring and nitrogen protection, first add 23.61g of γ-glycidoxypropyltrimethoxysilane, 5.60g of boric acid, 5.15g of deionized water and 0.09g of 20% tetramethylammonium hydroxide solution into three ports After the flask, reflux at a constant temperature of 30°C for 2 hours to obtain solution A;

[0035] 2) Under the conditions of stirring and nitrogen protection, add 30.89g of trimethylchlorosilane, 18.00mL of methanol and 36.00mL of pyridine into the solution A obtained in step 1), and reflux at 40°C for 6 hours, Obtain crude product after vacuum distillation;

[0036] 3) Then after the crude product is dissolved in 1g of dichloromethane, the insoluble matter is filtered off, and after vacuum distillation and vacuum drying, hyperbranched polyborosiloxane is obtained, and its molecular formula is:

[0037] [(CH 3 ) 3 SiO 1 / 2 ] a [R 1 R 2 2 SiO 1 / 2 ] b [R 1 R 2 SiO 2 / 2 ] c [R 1 SiO 3 / 2 ] d

[0038] [R 3 2 BO 1 / 2 ] e [R...

Embodiment 2

[0044] 1) Under stirring conditions, first add 23.61g of γ-glycidoxypropyltrimethoxysilane, 9.41g of trimethyl borate, 3.43g of deionized water and 0.04g of KOH into a three-necked flask, and keep the temperature at 90°C Reflux for 30 hours to obtain solution A;

[0045] 2) Add 15.44g of hexamethyldisiloxane, 5.00mL of n-butanol and 8.30mL of tetrahydrofuran into the solution A obtained in step 1) under stirring conditions, and reflux at 90°C for 20 hours Afterwards, crude product is obtained after distillation under reduced pressure;

[0046] 3) After the crude product is dissolved in 1000g of dichloromethane, the insoluble matter is filtered off, and after vacuum distillation and vacuum drying, hyperbranched polyborosiloxane is obtained.

[0047] Its molecular formula is:

[0048] [(CH 3 ) 3 SiO 1 / 2 ] a [R 1 R 2 2 SiO 1 / 2 ] b [R 1 R 2 SiO 2 / 2 ] c [R 1 SiO 3 / 2 ] d

[0049] [R 3 2 BO 1 / 2 ] e [R 4 2 BO 1 / 2 ] f [R 3 R 4 BO 1 / 2 ] g [R 3 BO 2 / 2 ] ...

Embodiment 3

[0053] 1) Under stirring and nitrogen protection conditions, first add 23.80g 3-mercaptopropyltriethoxysilane, 13.00g triethyl borate, 4.46g deionized water and 0.05g p-toluenesulfonic acid into a three-necked flask, and then Reflux at constant temperature for 4 hours at 65°C to obtain solution A;

[0054] 2) Under the conditions of stirring and nitrogen protection, then add a mixed solvent consisting of 23.22g of hexamethyldisiloxane, 20.00mL of ethanol and 10.00mL of pyridine into the solution A obtained in step 1), and reflux at 65°C for 7 After one hour, the crude product was obtained after distillation under reduced pressure;

[0055] 3) Then after the crude product is dissolved in 50g toluene, the insoluble matter is filtered off, and after vacuum distillation and vacuum drying, hyperbranched polyborosiloxane is obtained, and its molecular formula is:

[0056] [(CH 3 ) 3 SiO 1 / 2 ] a [R 1 R 2 2 SiO 1 / 2 ] b [R 1 R 2 SiO 2 / 2 ] c [R 1 SiO 3 / 2 ] d

[0057] [...

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Abstract

The invention discloses a modified polymer material and a preparation method of the modified polymer material. The modified polymer material is obtained by uniformly mixing 100 parts by weight of thermosetting resin, 0 to 100 parts by weight of a curing agent, 1 to 100 parts by weight of hyperbranched polyborosiloxane with functional groups and 0 to 1 part by weight of a curing catalyst at the temperature of 30 to 400 DEG C, has excellent storage stability, manufacturability and reactivity, and fully integrates performance advantages of a hyperbranched polymer, polysiloxane and polyboroxane, thereby not only having higher toughness, higher flame retardancy, higher thermal stability and higher dielectric properties and wet-heat resistance, but also having high cost performance. The preparation method of the modified polymer material disclosed by the invention has the advantages of wide applicability, simple operation process, easiness in molding and the like.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a modified polymer material and a preparation method thereof. Background technique [0002] In recent years, the rapid development of modern industry has put forward more and higher requirements for the performance of polymer materials. For polymer materials, they should not only have outstanding heat resistance, moisture resistance and mechanical properties, but also outstanding resistance Flammability is becoming one of the necessary performance characteristics of polymer materials. Compared with inorganic materials and metal materials, polymer materials are easier to burn, and often produce a lot of harmful gases and smoke during the combustion process. Therefore, polymer materials not only bring convenience to people's lives, but also because of their easy Flammability poses potential safety concerns. Therefore, it is of great scientific significance and applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L61/06C08L79/04C08L79/08C08L67/06C08L69/00C08L75/04C08L55/02C08L71/12C08L61/16C08G77/22C08G77/08C08G77/34C08G77/385C08G77/388C08G77/38
CPCC08G77/08C08G77/22C08G77/34C08G77/38C08G77/385C08G77/388C08L55/02C08L61/06C08L61/16C08L63/00C08L67/06C08L69/00C08L71/12C08L75/04C08L79/04C08L79/08C08L2201/02C08L2201/08C08L2205/03C08L83/08
Inventor 翟波刘小英郑燕玉罗水源卓东贤何芬陈清池李文杰林晓敏陈少云
Owner QUANZHOU NORMAL UNIV
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