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Flame-retardant polysulfide sealant and preparation method thereof

A polysulfide sealant, flame-retardant technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problem of poor flame retardancy of two-component polysulfide sealant, achieve good flame-retardant effect, add Small amount, avoiding the effect of flammability

Active Publication Date: 2013-09-18
LIAONING SHUANGQIANG PLASTIC TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above problems, the embodiment of the present invention provides a flame-retardant one-component polysulfide sealant and its preparation method, which is a halogen-free flame-retardant polysulfide sealant, which can solve the problem of existing two-component polysulfide seal The problem of poor flame retardancy of glue can not only ensure the performance of polysulfide sealant, but also avoid its flammability in the air

Method used

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  • Flame-retardant polysulfide sealant and preparation method thereof
  • Flame-retardant polysulfide sealant and preparation method thereof
  • Flame-retardant polysulfide sealant and preparation method thereof

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preparation example Construction

[0036] The preparation method of the above-mentioned flame-retardant polysulfide sealant is as follows:

[0037] Dry the filler and flame retardant at 60-80°C for 1 hour; put the dried filler, flame retardant, liquid silane-modified polysulfide rubber, tackifier, and plasticizer into the kneader and mix evenly. The paste is ground by a colloid mill, and then dehydrated in a reactor under vacuum to obtain the one-component flame-retardant polysulfide sealant.

[0038] In the polysulfide sealant in the embodiment of the present invention, the flame retardant formed by compounding flame-retardant graphite and antimony trioxide is used as a flame-retardant system, and the amount of addition is small, so that the density of the sealant is small and the consumption per unit volume is small; The sealant has good flame retardant effect, the oxygen index is greater than 34%, and meets the FV-0 standard, and the sealant does not contain volatile components, and will not corrode glass, s...

Embodiment 1

[0041] This embodiment provides a flame-retardant polysulfide sealant, which is a single-component polysulfide sealant. The amount of each raw material (by mass percentage) of the sealant is:

[0042]

[0043] The preparation method of the above-mentioned sealant is as follows: dry flame-retardant graphite, antimony trioxide, barium titanate, and calcium carbonate at 60-80°C for 1 hour; dry liquid silane-modified polysulfide rubber, dibutyl phthalate , rosin resin, dried filler and flame retardant are put into a kneader and mixed evenly. The mixed paste is ground by a colloid mill, and then dehydrated in a reactor under vacuum to obtain a one-component flame-retardant polymer. Sulfur sealant.

Embodiment 2

[0045] This embodiment provides a flame-retardant polysulfide sealant, which is a single-component polysulfide sealant. The amount of each raw material (by mass percentage) of the sealant is:

[0046]

[0047] The preparation method of above-mentioned sealant is as follows:

[0048] Dry flame-retardant graphite, antimony trioxide, kaolin, and carbon black at 60-80°C for one hour; dry liquid silane-modified polysulfide rubber, dioctyl phthalate, terpene resin, and dried filler 1. The flame retardant is put into a kneader and mixed evenly. The mixed paste is ground by a colloid mill, and then dehydrated in a reactor under vacuum to obtain a one-component flame-retardant polysulfide sealant.

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Abstract

The invention discloses a flame-retardant polysulfide sealant and a preparation method thereof, belonging to the field of adhesive preparation. The sealant comprises the following components by mass: 20-55% of liquid silane modified polysulfide rubber, 20-55% of flame retardant, 1-10% of tackifier, 5-15% of plasticizer and 5-20% of filler. The sealant disclosed by the invention is a single-component halogen-free flame-retardant polysulfide sealant, has good flame retardance, wide viscosity adjustable range and low specific gravity, does not corrode aluminium, glass and other substrates and iseasy to construct.

Description

technical field [0001] The invention relates to the field of sealant preparation, in particular to a single-component flame-retardant polysulfide sealant and a preparation method thereof. Background technique [0002] Polymer materials are widely used in the building materials industry. However, polymer materials themselves are extremely flammable. When a fire breaks out, a large amount of toxic gases, such as carbon monoxide and nitrogen monoxide, will be released from the combustion, which can poison people in a very short time. die. A large number of data show that poisonous smoke is the number one killer of people dying in fire. Therefore, the flame retardant properties of building materials are directly related to the safety of people's lives and property. However, a large amount of halogen flame retardants added to flame retardant sealants will generate a large amount of toxic gases such as hydrogen halide during the combustion process, while halogen-free flame retar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J181/04C09J11/04C09K3/10
Inventor 王海峰王勇
Owner LIAONING SHUANGQIANG PLASTIC TECH DEV
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