CN108203525B

CN108203525B - Expandable flexible fireproof material and application thereof

Info

Publication number: CN108203525B
Application number: CN201810000781.2A
Authority: CN
Inventors: 尹书祥
Original assignee: Foshan Nanhai Chongtai Fireproof Material Co ltd
Current assignee: Foshan Nanhai Chongtai Fireproof Material Co ltd
Priority date: 2018-01-02
Filing date: 2018-01-02
Publication date: 2020-10-02
Anticipated expiration: 2038-01-02
Also published as: CN108203525A

Abstract

The invention provides an expandable flexible fireproof material which is prepared from a resin composite material containing flexible resin, expandable graphite and an additive. The fireproof gasket sleeve can be used as a fireproof sealing strip for a door frame and can also be used as a fireproof gasket sleeve or gasket assembly for a lock. The material has good flexibility, excellent expansion performance, good shape retention after combustion and no smoke after combustion, and can be heated to rapidly expand to block door seams or lockset seams when a fire disaster happens.

Description

Expandable flexible fireproof material and application thereof

Technical Field

The invention belongs to the field of fireproof flame-retardant materials, and particularly relates to an expandable flexible fireproof material and application thereof as a door frame sealing strip and a lockset fireproof gasket sleeve.

Background

Along with the development of the door and window sealing industry and the continuous improvement of people's awareness of fire prevention safety, the requirements of people on the sealing performance and the fire resistance of doors and windows are also continuously improved. For door and window fire prevention, at present, many reports on fire-proof sealing strips exist, but sealing strips which can be not burnt out for a long time after a fire disaster occurs and can be rapidly expanded to isolate smoke permeation are always targets for research and study of scientific research personnel. And fewer reports are made on lock sealing and fire protection. In a case of being mature, the murphy dike is destroyed in the ant hole, even if each edge of the door and window is additionally provided with the fireproof sealing strip, if the fire happens from the gap of the lockset or the toxic smoke leaks, the whole fireproof effect which can be realized just short of one step.

There are some reports on the fire prevention of the lock, but according to the knowledge of the applicant, no plugging part which can play a long-term, effective fire prevention and smoke prevention effect on all possible leakage links of the lock is available at present. For example, CN2690518Y discloses a novel fireproof lock, wherein it is disclosed to be equipped with the fireproof gasket inside the lock seat, this fireproof gasket is made by the easily expandable composite, can fill up the gap in the whole lock after being heated, is equipped with the breach in the fireproof gasket, and other parts are the annular body of uniform thickness, and when catching fire in the room, the fireproof gasket in the lock seat is heated the inflation rapidly, and the outer gap of sealing between lock and the door of fireproof gasket, the lockhole is sealed to the inlayer, both prevented that the door from opening, the separation flue gas is poured into indoor again. However, the gasket in this document is in the form of a single gasket, and this document does not disclose the composition of the gasket, and also does not disclose the flexibility and strength of the gasket before combustion, and the shape retention of the gasket after combustion.

CN106116600A discloses a preparation method of a ceramizable fireproof plugging material, aiming at the problems that the traditional fireproof plugging material is poor in fireproof performance, easy to burn and crack in fire and incapable of effectively preventing flame and smoke from spreading, and the plugging material is often cured due to binder aging, environmental temperature and the like in the using process, and the plugging material shrinks in volume to form gaps after being cured, so that plugging is not tight, the preparation method of the ceramizable fireproof plugging material is provided, wherein expandable graphite is used as a flame retardant, rice hull ash rich in silicon dioxide and diatomite are mixed to form ceramizable paste, river sand perlite fireproof filler is used as an auxiliary material, and the ceramizable fireproof plugging material is obtained after a kneader and silicon resin are mixed. However, this material uses potassium dichromate, ferric nitrate, sulfuric acid, and the like, and is liable to corrode the lock, and is not suitable for use in the lock. Further, there is no mention of the degree of expandability, the degree of flexibility, and the retention of the post-combustion morphology, let alone the simultaneous optimization of various properties.

CN104610629A proposes a polyethylene flame-retardant material, which is prepared from the following components in parts by mass: 70-100 parts of polyethylene, 10-15 parts of a carbonizing agent, 10-15 parts of borax, 0.01-0.5 part of a stabilizer, 10-30 parts of hexabromocyclododecane, 8-12 parts of talcum powder, 4-10 parts of a cosolvent, 15-25 parts of zinc borate, 0.1-3 parts of a color master batch, 20-40 parts of a hydroxide, 1-10 parts of antimony trioxide, 15-20 parts of flame-retardant polyether, 0.05-0.5 part of a coupling agent, 10-20 parts of expandable graphite, 8-15 parts of wood powder, 5-10 parts of titanium dioxide, 5-10 parts of sucrose and 1-5 parts of molybdenum trioxide. There is no mention of the degree of expansibility, the degree of flexibility and the shape retention after combustion, and toxic halogen-containing components are used therein, and flammable wood flour and the like are used.

CN104311113A discloses a fireproof door core plate, which comprises the following components in parts by weight: 5-30 parts of reinforcing fiber; 2-10 parts of bentonite; 6-30 parts of an adhesive; 10-25 parts of an inorganic gel material; 1-12 parts of an interface agent; 1-10 parts of fireproof expansion plugging material; 0.2-2 parts of a waterproof agent; 150 portions of water and 260 portions of water. The interface agent has the functions of improving the compatibility and foaming of all raw materials, the generated foam is kept by the adhesive and the inorganic gel material, and the reinforcing fiber ensures that the material has certain flexibility and good mechanical strength. When the fireproof expansion plugging material is fired, the fireproof expansion plugging material expands to form a ceramic carbon layer, so that cracks formed when the plate is fired can be effectively plugged, and the door core plate has better heat insulation and fire smoke blocking performances. The preparation method is simple and convenient, and easy to operate and realize industrial production. The door core board has the characteristics of small volume weight, long fire-resistant time, no moisture absorption, no halogen return and the like. The degree of expandability, the degree of flexibility and the retention of the shape after combustion are not mentioned, and particularly, the materials used are inorganic materials, the flexibility is poor, and the bonding of a door closer or a lock is not facilitated.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an expandable flexible fireproof material, which is prepared from a resin composite material containing a flexible resin, expandable graphite and an additive. The fireproof gasket sleeve can be used as a fireproof sealing strip for a door frame and can also be used as a fireproof gasket sleeve or gasket assembly for a lock. The material has good flexibility, excellent expansion performance, good shape retention after combustion and no smoke after combustion, and can be heated to rapidly expand to block door seams or lockset seams when a fire disaster happens.

One of the contributions of the present application is that by blending the components, a resin composite material having multiple advantages of flexibility, high expandability, shape retention, no smoke, and the like is obtained. Preferably, the second contribution point is that the resin composite material is used as a door panel sealing strip, in particular a lock gasket sleeve or a gasket assembly, so that long-term fire-proof and smoke-proof effects are achieved. Specifically, the application provides the following technical scheme:

the expandable flexible fireproof material is provided, wherein the resin composite material is prepared from raw materials containing flexible resin, expandable graphite, silane-treated white carbon black, silicon tripolyphosphate and a carbon forming agent.

Preferably, the fireproof material is prepared from the following raw materials in parts by weight:

preferably wherein the flexible resin is selected from the group consisting of silicone resins, polyethylene resins, polyvinyl chloride resins; the carbon forming agent is pentaerythritol, a dimer or trimer thereof, or starch.

Preferably, the flame retardant is ammonium phosphate, ammonium polyphosphate, a phosphate ester or a phosphazene compound, more preferably ammonium phosphate or ammonium polyphosphate; the toughening agent is epoxy resin; the smokeless agent (also known as cigarette agent) is aluminum hydroxide, magnesium hydroxide or calcium carbonate.

Preferably, the siloxane in which the white carbon black is treated may be vinyltriethoxysilane, KH-550, KH560 or the like, preferably a siloxane containing a nitrogen atom and a benzene ring, and specifically a silane coupling agent disclosed in CN102584886A may be selected.

The use of the fire-resistant material as a door frame sealing strip is also provided.

The utility model provides a use of fire-proof material is as tool to lock gasket cover, gasket cover can fold into gasket face and lower gasket face along the central line, go up the gasket face with be equipped with the through-hole that is used for the assembly on the gasket face down symmetrically, in the use, gasket cover closely laminates on the lock body surface, meets fire and is heated the inflation, can effectively prevent that poisonous flue gas or flame from passing through the gap in the tool to lock and causing the phenomenon of getting a fire or poisoning.

In addition, the fireproof material is used as a lock gasket assembly, the gasket assembly comprises an upper gasket face and a lower gasket face, through holes for assembling are symmetrically formed in the upper gasket face and the lower gasket face, and in use, the gasket assembly is tightly attached to the surface of a lock body and expands when heated when encountering fire, so that the phenomenon of fire crossing or poisoning caused by the fact that toxic smoke or fire penetrates through gaps in a lock can be effectively prevented.

Detailed Description

Example 1

Weighing the following raw materials in parts by weight:

mixing the raw materials, adding the mixture into an extrusion granulator to prepare color master batches, then extruding, cooling by water to prepare a sheet material, and then cutting and stamping to form the required gasket sleeve. The desired gasket sleeve was tested for flammability and flexibility and the results are shown in table 1.

Example 2

The other conditions were the same as in example 1 except that the polyethylene resin in example 1 was replaced with a silicone resin.

Example 3

The other conditions were the same as in example 1 except that the treated white carbon was replaced with white carbon which was not treated with the silane coupling agent.

Example 4

The other conditions were the same as in example 1 except that the amount of the silane coupling agent-treated white carbon was 10 parts by weight.

Example 5

The other conditions were the same as in example 1 except that the silane coupling agent was the silane coupling agent disclosed in CN 102584886A.

Comparative example 1

The other conditions were the same as in example 1 except that no silicon triphosphate was added.

Comparative example 2

The other conditions were the same as in example 1 except that no white carbon black was added.

Comparative example 3

The other conditions were the same as in example 1 except that 23 parts by weight of pentaerythritol phosphate melamine salt was used instead of 8 parts by weight of pentaerythritol and 15 parts by weight of ammonium phosphate as described in example 1.

TABLE 1 comparison of the Properties of the examples and comparative examples

It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.

Claims

1. An expandable flexible fireproof material is prepared from the following raw materials in parts by weight:

15-30 parts of flexible resin

Expandable graphite 15-30

Siloxane treated white carbon 15-25

Silicon triphosphate 5-8

2-8% of paraffin wax

10-20 parts of flame retardant

Smokeless agent 3-5

3-10 parts of carbon forming agent

Toughening agent 5-15

3-8 parts of zinc stearate;

the carbon forming agent is pentaerythritol, a dimer or a trimer thereof, the flame retardant is ammonium phosphate or ammonium polyphosphate, the toughening agent is epoxy resin, and the siloxane for processing the white carbon black is the following silane coupling agent:

2. the fire-barrier material of claim 1, wherein the flexible resin is selected from the group consisting of silicone resin, polyethylene resin, polyvinyl chloride resin.

3. The fire-barrier material of claim 2, the toughening agent being an epoxy resin; the smokeless agent is aluminum hydroxide, magnesium hydroxide or calcium carbonate.

4. Use of the fire-resistant material according to any one of claims 1 to 3 as a gasket sleeve for a lock, the gasket sleeve being foldable along a central line into an upper gasket face and a lower gasket face, the upper gasket face and the lower gasket face being symmetrically provided with through holes for assembly, in use, the gasket sleeve is tightly attached to a surface of a lock body and expands when heated in a fire, thereby effectively preventing fire or toxic smoke from passing through a gap in the lock and causing fire spread or poisoning.

5. Use of the fire-resistant material according to any one of claims 1 to 3 as a lock shim assembly, the shim assembly comprising an upper shim face and a lower shim face, the upper shim face and the lower shim face being symmetrically provided with through holes for assembly, in use, the shim assembly is tightly attached to the surface of a lock body and expands when heated in fire, thereby effectively preventing fire or toxic smoke from crossing or being poisoned when a fire penetrates through a gap in the lock.