A kind of supramolecular flame-retardant silicone rubber and preparation method thereof

A supramolecular and silicone rubber technology, applied in the field of silicone rubber and its preparation, supramolecular flame retardant silicone rubber and its preparation, can solve the problems of general flame retardant effect of glass fiber, achieve strong practical value, and have flame retardancy , high flame retardancy effect

Active Publication Date: 2019-08-23
东莞市诚印有机硅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant effect of glass fiber itself is average, and it is usually not used as a flame retardant. At present, there is no report on the use of glass fiber as a filler to simultaneously improve the mechanical properties and flame retardant properties of silicone rubber, let alone supramolecular modification. Related reports that glass fiber is used as a filler to simultaneously improve the mechanical properties, flame retardancy, and even dimensional stability and thermal stability of silicone rubber

Method used

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  • A kind of supramolecular flame-retardant silicone rubber and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] 1. Preparation of supramolecular glass fiber:

[0034] A) Put 10g of glass fibers into 100mL of toluene, stir and mix evenly at room temperature under nitrogen protection;

[0035] B) Add 40g of ammonium bisphosphate, react at 100°C for 6 hours, then vacuumize to remove toluene;

[0036] C) cooling to 70° C., adding 20 g of ferrous chloride, stirring and reacting for 3 hours, followed by rinsing and drying;

[0037] D) repeating the above steps A) to C) several times to make the thickness of the film reach 15 nanometers, that is, to obtain the supramolecular glass fiber.

[0038] Table 1 shows the characteristic wavenumbers of the infrared spectrum of the glass fiber and the obtained supramolecular glass fiber.

[0039] 2. Preparation of supramolecular flame retardant silicone rubber:

[0040] a) Add 10 grams of supramolecular glass fibers to 90 grams of polysiloxane containing vinyl end groups, and stir evenly at room temperature to obtain a mixture;

[0041] b) Ad...

Embodiment 2

[0047] 1. Preparation of supramolecular glass fiber:

[0048] A) Put 15g of glass fiber into 100mL of toluene, stir and mix evenly at room temperature under nitrogen protection;

[0049] B) Add 60g of ammonium bisphosphate, react at 110°C for 4 hours, then vacuumize to remove toluene;

[0050] C) cooling to 80° C., adding 25 g of ferrous chloride, stirring and reacting for 2 hours, rinsing and drying;

[0051] D) repeating the above steps A) to C) several times to make the thickness of the film reach 20 nanometers, that is, to obtain the supramolecular glass fiber.

[0052] Table 1 shows the characteristic wavenumbers of the infrared spectrum of the glass fiber and the obtained supramolecular glass fiber.

[0053] 2. Preparation of supramolecular flame retardant silicone rubber:

[0054] a) Add 15 grams of supramolecular glass fibers to 93 grams of polysiloxane containing vinyl end groups, and stir evenly at room temperature to obtain a mixture;

[0055] b) Add 8 grams of ...

Embodiment 3

[0061] 1. Preparation of supramolecular glass fiber:

[0062] A) Put 20g of glass fiber into 100mL of toluene, stir and mix evenly at room temperature under nitrogen protection;

[0063] B) Add 80g of ammonium bisphosphate, react at 120°C for 1 hour, then vacuumize to remove toluene;

[0064] C) cooling to 90° C., adding 30 g of ferrous chloride, stirring and reacting for 1 hour, rinsing and drying;

[0065] D) repeating the above steps A) to C) several times to make the thickness of the film reach 25 nanometers, that is, to obtain the supramolecular glass fiber.

[0066] The characteristic wavenumbers of infrared spectra of glass fibers and supramolecular glass fibers are shown in Table 1.

[0067] 2. Preparation of supramolecular flame retardant silicone rubber:

[0068] a) Add 20 grams of supramolecular glass fibers to 95 grams of polysiloxane containing vinyl end groups, and stir evenly at room temperature to obtain a mixture;

[0069] b) Add 10 grams of hydrogen-conta...

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Abstract

The invention discloses flame-retardant supermolecular silicone rubber and a preparation method thereof. The flame-retardant supermolecular silicone rubber is prepared from components in parts by mass as follows: 90-95 parts of a component I, 5-10 parts of a component II, 0.3-0.5 parts of a catalyst and 5-15 parts of supermolecular glass fiber through mixing and curing, wherein the component I is polysiloxane containing vinyl end groups, the component II is hydrogen-containing polysiloxane, and the supermolecular glass fiber is obtained by wrapping glass fiber with multiple layers of supermolecular films formed by self-assembling diphosphonate and ferrous chloride on the basis of coordination bonds. The supermolecular glass fiber is added to silicone rubber, so that the prepared silicone rubber has high flame retardance, mechanical property, dimensional stability and heat stability, and the use range of the silicone rubber is broadened; besides, the preparation technology is economical and practical, the preparation process is simple, the cost is low and large-scale production is easily realized.

Description

technical field [0001] The invention relates to a silicone rubber and a preparation method thereof, in particular to a supramolecular flame-retardant silicone rubber and a preparation method thereof, belonging to the technical field of silicone rubber materials. Background technique [0002] Silicone rubber refers to the rubber whose main chain is composed of silicon and oxygen atoms alternately, and there are usually two organic groups attached to the silicon atoms. Silicone rubber is widely used in aerospace, aviation, electronics, electrical, construction, machinery, metallurgy, automobiles, instrumentation, Textile, chemical, light industry, food, medical and health departments. With the growth of consumption in the silicone rubber industry, this high-performance special rubber has been transformed into a popular synthetic rubber and has become one of the most widely used synthetic rubber varieties. However, silicone rubber itself is easy to burn, which limits its appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K9/10C08K7/14C08J5/08
Inventor 王锦成陈凌珊张晨阳李智杰
Owner 东莞市诚印有机硅科技有限公司
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