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Method for preparing environmental-friendly flame-retardant silicone adhesive

A silicone adhesive, environmentally friendly technology, used in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of flame retardant performance not reaching the flame retardant grade.

Inactive Publication Date: 2017-06-06
ZHEJIANG TIME NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional silicone rubber has weather resistance, high and low temperature resistance, UV resistance, water resistance, excellent displacement performance, high tensile strength, and good adhesion to most building materials, but it is not as flame retardant. to FV-0 flame retardant rating

Method used

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  • Method for preparing environmental-friendly flame-retardant silicone adhesive
  • Method for preparing environmental-friendly flame-retardant silicone adhesive
  • Method for preparing environmental-friendly flame-retardant silicone adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 Shown, a kind of preparation method of environment-friendly type flame retardant silicone glue, comprises the steps:

[0035] (1) Add 107 base rubber, 201 methyl silicone oil, antimony trioxide flame retardant, and fumed silica into a vacuum kneader, heat and stir, vacuumize and dehydrate, remove air bubbles, and discharge to prepare the base material;

[0036] (2) Use the base material after grinding, add cross-linking agent, coupling agent, waterproofing agent, and catalyst in a double-planetary dispersing mixer in proportion, stir and mix evenly, vacuumize and dehydrate to obtain a sample, and put it into a plastic bottle.

[0037] The mass fraction of described 107 base glue is 100 parts, the mass fraction of 201 methyl silicone oil is 1-30 parts, the mass fraction of antimony trioxide flame retardant is 15-75 parts, the mass fraction of fumed silica is 5-150 parts, the mass fraction of the crosslinking agent is 1-15 parts, the mass fraction of the...

Embodiment 2

[0046] Such as figure 2 As shown, the same as in Example 1, the main difference is that the relationship between the fraction of the antimony trioxide flame retardant contained in the 107 base rubber per 100 parts and the oxygen index satisfies:

[0047] Z=2O 2 -45, 25≥O 2 ≥15;

[0048] Z=-0.02O 2 2 +1.9O 2 , 45≥O 2 ≥25;

[0049] Z=2.5O 2 -67.5, 49≥O 2 ≥45;

[0050] Wherein Z is the fraction of antimony trioxide flame retardant contained in every 100 parts of 107 base rubber, O 2 is the oxygen index in percentage.

[0051] Through the simulation analysis of NWCHEM software and Digimat software, it is found that when the relationship of the above ratio is satisfied, as the fraction of antimony trioxide flame retardant increases, the oxygen index increases significantly. The corresponding mass fraction of antimony trioxide flame retardant can be selected for addition.

[0052] Finally, the inventor conducted an experiment, using 100 parts by mass of 107 base rubber a...

Embodiment 3

[0057] Such as image 3 As shown, the same as in Example 1, the main difference is that the relationship between the fraction of the antimony trioxide flame retardant contained in the 107 base rubber per 100 parts and the tensile bond strength satisfies:

[0058] Z=-471P 2 +765P-255,0.56Mpa≥P≥0.96Mpa,

[0059] P is the tensile bond strength.

[0060] Through the simulation analysis, it can be seen that with the increase of the antimony trioxide flame retardant fraction per 100 parts of 107 base rubber, the tensile bond strength first increases and then decreases, so the tensile bond strength within a certain range is required For environmentally friendly flame retardant silicone glue, you can choose the corresponding fraction of flame retardants to add to make.

[0061] In the specific experiment, different mass parts of flame-retardant silicone glue were prepared, and tensile bonded specimens were prepared according to the GB / T13477.8-2002 standard. Cured for 21 days unde...

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Abstract

The invention relates to the technical field of building material preparation, and particularly relates to a method for preparing an environmental-friendly flame-retardant silicone adhesive which is relatively good in flame retardancy and extrusion property. The method for preparing the environmental-friendly flame-retardant silicone adhesive comprises the following steps: (1) adding a 107 base adhesive, 201 methyl silicone oil, an antimonous oxide flame retardant and fumed silica into a vacuum kneading machine, heating and stirring, vacuuming to dehydrate and remove bubbles, and discharging so as to obtain a base material; (2) adding the grinded base material and a cross-linking agent, a coupling agent, a waterproof agent and a catalyst into a double-planet dispersion stirring machine in sequence in a ratio, uniformly stirring and mixing, vacuuming to dehydrate so as to obtain a test sample, and putting the test sample into an adhesive bottle. In the early combustion period, antimonous oxide is firstly molten, then a protection membrane can be formed on the surface of the material to isolate air, and through internal heat absorption reaction, the combustion temperature can be reduced. At a high-temperature state, the antimonous oxide is gasified, and the concentration of oxygen in the air can be diluted, therefore, a flame retardancy function can be achieved.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a method for preparing an environment-friendly flame-retardant silicone glue with better flame-retardant performance and extrusion performance. Background technique [0002] In modern building materials, environmentally friendly materials are used more and more widely, and the country has always encouraged the development of environmentally friendly materials to achieve sustainable development. As a sealing material, silicone glue is widely used in doors and windows, curtain wall structural engineering and various building joints. The English name of silicone glue is SILICONE, which is a part of silicone products. It is an ointment-like material that will solidify into a tough rubber-like solid material once exposed to moisture in the air. Mainly divided into deacetate type, dealcohol type, deamination type, depropanization type. Glass glue is ...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06
CPCC09J183/06C08L2201/02C08L2205/02C09J11/04C09J11/06C08L83/04C08K13/02C08K3/2279C08K3/36C08K5/544
Inventor 林菊琴
Owner ZHEJIANG TIME NEW MATERIAL
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