CN111592763B - Fireproof silica gel cloth and preparation method and application thereof - Google Patents
Fireproof silica gel cloth and preparation method and application thereof Download PDFInfo
- Publication number
- CN111592763B CN111592763B CN202010451222.0A CN202010451222A CN111592763B CN 111592763 B CN111592763 B CN 111592763B CN 202010451222 A CN202010451222 A CN 202010451222A CN 111592763 B CN111592763 B CN 111592763B
- Authority
- CN
- China
- Prior art keywords
- silica gel
- flame retardant
- methyl vinyl
- silicone rubber
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to a fireproof silica gel cloth and a preparation method and application thereof, and solves the problems that the existing flame-retardant silica gel cloth becomes oily after combustion and drips, and a cable cannot be continuously protected in a fire. The composite material comprises the following raw material components in parts by weight: 80-120 parts of methyl vinyl silicone rubber, 35-65 parts of flame retardant, 0.6-1 part of coupling agent, 1.3-1.7 parts of cross-linking agent, 0.1-0.3 part of inhibitor and 1.8-2.2 parts of catalyst. The fire retardant and the methyl vinyl silicone rubber in the fireproof silica gel cloth can be cured and hardened after being burnt at high temperature to form a compact protective layer and keep covering the outer side of the cable, so that the cable is protected, and the fireproof silica gel cloth has the effect of preventing fire from rapidly spreading.
Description
Technical Field
The invention relates to the technical field of fireproof silica gel, in particular to fireproof silica gel cloth and a preparation method and application thereof.
Background
In daily life and industrial production, electronic appliances are commonly used, and electronic components are increasingly becoming more dense and miniaturized, so that higher requirements are made on the stability of electronic devices. Electronic device self can produce the heat in the use, can have the problem of the accident that takes place, because all through cable interconnect between the electronic apparatus, flame can stretch along the cable is quick when the conflagration takes place, if do not put out a fire fast, can just form great intensity of a fire in the short time, produce great loss or even incident.
In order to improve the safety of the electronic appliance, a layer of flame retardant cloth or flame retardant coating is generally wrapped on the outer side of the cable. Silicon rubber, a special synthetic rubber, has a silicon-oxygen bond as a main chain, while general rubber has a structure with a C-C bond as a main chain, and has high and low temperature resistance, high voltage resistance, ozone aging resistance, radiation resistance, high air permeability and excellent chemical inertness to a medium such as lubricating oil due to the structural particularity of the silicon rubber. In addition, the silicon rubber has wide use temperature range (-40 ℃ to 200 ℃), good elasticity, good tracking resistance and good electrical erosion performance, so the silicon rubber is mostly adopted as the flame retardant layer on the surface of the cable at present.
The invention discloses a glass fiber flame-retardant silica gel cloth and a manufacturing method thereof in Chinese patent with application publication number CN101886339A, wherein the glass fiber flame-retardant silica gel cloth comprises glass fiber cloth and an anticorrosion and corrosion-resistant flame-retardant layer combined on at least one side surface of the glass fiber cloth, and the anticorrosion and corrosion-resistant flame-retardant layer is composed of the following raw materials in parts by weight: 60-70 parts of mixed silicon rubber, 25-30 parts of flame retardant, 2-5 parts of pigment and 0.1-0.5 part of vulcanizing agent. According to the technical scheme, the glass fiber cloth is used as a base material, and the anti-corrosion anti-flaming layer consisting of the mixed silicon rubber, the flame retardant, the pigment and the vulcanizing agent is combined on one side or two sides of the glass longitudinal fiber cloth, so that ideal high-temperature resistance, anti-corrosion and flame retardant effects can be embodied.
However, the above prior art solutions have the following drawbacks: the fire-retardant silica gel cloth of glass fiber can become oiliness and drip after reaching the ignition and burning, can't last in the intensity of a fire to the cable protect, after the fire-retardant silica gel cloth of glass fiber burnt, the cable still can be burnt, and then leads to the intensity of a fire to spread fast.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide a fireproof silica gel cloth, which has the advantages that: flame retardant efficiency is good, can solidify the sclerosis after the burning, forms the cladding of one deck protective layer in the cable outside, prevents that the cable from being burnt.
The second purpose of the invention is to provide a preparation method of fireproof silica gel cloth, which has the following advantages: the components are uniformly mixed in the processing process, the formed fireproof silica gel cloth has better performance, and the methyl vinyl silicone rubber can be prevented from self-vulcanizing at normal temperature to form dead rubber.
A third object of the invention is to provide a cable, which is advantageous in that: the fireproof coating has good flame retardant property, and a fireproof layer can be formed on the surface layer when a fire disaster occurs, so that the fire is avoided.
In order to achieve the first object, the invention provides the following technical scheme:
the fireproof silica gel cloth comprises the following raw material components in parts by weight: 80-120 parts of methyl vinyl silicone rubber, 35-65 parts of flame retardant, 0.6-1 part of coupling agent, 1.3-1.7 parts of cross-linking agent, 0.1-0.3 part of inhibitor and 1.8-2.2 parts of catalyst.
By adopting the technical scheme, the coupling agent mainly plays a role in blending, the intermiscibility of the components is increased, the components can be uniformly mixed with each other, the cross-linking agent and the methyl vinyl silicone rubber are subjected to a vulcanization reaction at high temperature in the processing process of the fireproof silica gel cloth, so that chemical bonds are generated between linear molecules in the methyl vinyl silicone rubber, the linear molecules are connected with each other, the strength and elasticity of the methyl vinyl silicone rubber are improved, the catalyst has a catalytic effect on the vulcanization reaction, the inhibitor can ensure that the methyl vinyl silicone rubber is not cross-linked or is delayed to be cross-linked for a long time at normal temperature (20 ℃) after being mixed with the cross-linking agent, the cross-linking can be quickly carried out when the temperature reaches the vulcanization temperature, so that the self-vulcanization reaction of the methyl vinyl silicone rubber and the cross-linking agent at normal temperature is prevented, and the methyl vinyl silicone rubber is prevented from being naturally cured and becoming dead rubber; the fire retardant can improve methyl vinyl silicone rubber's fire-retardant ability, and when the conflagration took place, the hardening can be solidified with methyl vinyl silicone rubber after the burning under high temperature to the fire retardant, forms the protective layer that the one deck is dense and keeps the cladding in the outside of cable, and then protects the cable, prevents that the cable from being burned and lead to the intensity of a fire to spread fast.
The invention is further configured to: the cross-linking agent is hydrogen-containing silicone oil.
By adopting the technical scheme, the hydrogen-containing silicone oil enables the internal molecules of the methyl vinyl silicone rubber to form a three-dimensional network structure with a stable structure, so that the vulcanized methyl vinyl silicone rubber has good strength and elasticity.
The invention is further configured to: the catalyst is a platinum catalyst.
By adopting the technical scheme, the platinum catalyst can accelerate the reaction rate of the vulcanization reaction of the methyl vinyl silicone rubber, and the vulcanized methyl vinyl silicone rubber has more stable performance, so that the cable is effectively protected, and the surface of the vulcanized methyl vinyl silicone rubber is smoother, so that the vulcanized methyl vinyl silicone rubber has good wear resistance and long service life, meanwhile, the platinum catalyst does not contain halogen, is different from the phenomenon that the platinum catalyst can be decomposed to generate pungent odor when being catalyzed by a peroxide catalyst, and can not generate odor in the catalysis process, thereby being beneficial to environmental protection.
The invention is further configured to: the flame retardant is any one or combination of a ceramic flame retardant, an ammonium polyphosphate flame retardant and a halogen-free flame retardant.
By adopting the technical scheme, the ceramic flame retardant has good flame-retardant self-extinguishing performance and good effects of inhibiting smoke and inhibiting combustion of embers, and a ceramic layer can be formed after combustion to isolate oxygen, so that the flame-retardant effect is achieved; the ammonium polyphosphate flame retardant has good low-toxicity, low-smoke and high-efficiency flame retardant performance, and can form a uniform carbon foam layer after combustion, thereby having the effects of oxygen isolation and flame retardance; the halogen-free flame retardant can form a glassy or stable foam covering layer after combustion, has the functions of heat insulation, oxygen isolation and prevention of combustible gas from escaping outwards, thereby achieving the purpose of flame retardance.
The invention is further configured to: the flame retardant is a combination of the ceramic flame retardant, the ammonium polyphosphate flame retardant and the halogen-free flame retardant, wherein the ceramic flame retardant comprises 20-30 parts by weight of the components, the ammonium polyphosphate flame retardant comprises 10-20 parts by weight of the components, and the halogen-free flame retardant comprises 5-15 parts by weight of the components.
By adopting the technical scheme, the flame retardant property of the methyl vinyl silicone rubber can be improved by mixing the ceramic flame retardant, the ammonium polyphosphate flame retardant and the halogen-free flame retardant, the using amount of the flame retardant is reduced, the cost is saved, the improvement of the strength and the performance of the methyl vinyl silicone rubber is facilitated, in addition, the smoke quantity generated by the methyl vinyl silicone rubber during combustion can be greatly reduced, the methyl vinyl silicone rubber is cured into a hard shell with good sealing property after being combusted, and then the cable is protected.
The invention is further configured to: the coupling agent is one of gamma-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma-aminopropyltriethoxysilane.
By adopting the technical scheme, the coupling agent can well improve the interface performance of each component, further enhance the bonding strength among the components, improve the performance of the methyl vinyl silicone rubber, improve the interface state of the methyl vinyl silicone rubber, and improve the aging resistance, the stress resistance and the electrical insulation performance of the methyl vinyl silicone rubber.
The invention is further configured to: the total mass ratio of the coupling agent to the raw materials is 1: (185-197).
By adopting the technical scheme, through tests, when the total mass ratio of the coupling agent to the raw materials is more than 1:185, the raw materials are viscous in the process of processing the fireproof silica gel cloth, and can be stuck on production equipment, so that the fireproof silica gel cloth is difficult to clean and has large loss, and when the total mass ratio of the coupling agent to the raw materials is less than 1:197, the processed fireproof silica gel cloth has poor elasticity, low performance and poor flame retardant effect.
In order to achieve the second object, the invention provides the following technical scheme:
a preparation method of fireproof silica gel cloth comprises the following steps:
s1: plasticating: plasticating the methyl vinyl silicone rubber at normal temperature, and stirring for 8-15 minutes;
s2: mixing: adding a flame retardant and a coupling agent into the internally mixed methyl vinyl silicone rubber for mixing, and mixing at the temperature of 115-125 ℃ for 0.8-1.2 hours;
s3: and (3) cooling: naturally cooling the mixed methyl vinyl silicone rubber to normal temperature;
s4: open mixing: adding a vulcanizing agent and a platinum catalyst into the mixed methyl vinyl silicone rubber, and open-milling for 10-20 minutes at 15-20 ℃;
s5: rolling: rolling the milled methyl vinyl silicone rubber into sheets;
s6: and (3) vulcanization: heating the crushed methyl vinyl silicone rubber, and baking for 5-10 minutes at the temperature of 140-;
s7: and (3) cooling: and naturally cooling the vulcanized methyl vinyl silicone rubber to normal temperature.
In order to achieve the third object, the invention provides the following technical solutions:
a cable is coated with the fireproof silica gel cloth prepared by the preparation method.
In conclusion, the beneficial technical effects of the invention are as follows:
the flame retardant is added into the methyl vinyl silicone rubber to improve the flame retardant capability of the methyl vinyl silicone rubber, when a fire disaster occurs, the flame retardant and the methyl vinyl silicone rubber can be cured and hardened after being combusted at high temperature to form a compact protective layer and keep covering the outer side of a cable, so that the cable is protected, the cable is prevented from being burnt to cause rapid spread of fire, and the vulcanizing agent is used for vulcanizing the methyl vinyl silicone rubber to improve the strength and the performance of the methyl vinyl silicone rubber;
the flame retardant property of the methyl vinyl silicone rubber can be improved by mixing the ceramic flame retardant, the ammonium polyphosphate flame retardant and the halogen-free flame retardant, the using amount of the flame retardant is reduced, the cost is saved, the strength and the performance of the methyl vinyl silicone rubber are improved, in addition, the smoke amount generated by the methyl vinyl silicone rubber during combustion can be greatly reduced, the methyl vinyl silicone rubber is cured into a hard protective layer with good sealing property after combustion, and further, the cable is protected;
the methyl vinyl silicone rubber is firstly plasticated to soften the methyl vinyl silicone rubber so as to be mixed with the flame retardant and the coupling agent, and the temperature is controlled between 15 and 20 ℃ during open milling so as to avoid the vulcanization reaction of the methyl vinyl silicone rubber and the crosslinking agent caused by the temperature rise during the open milling process.
Above-mentioned cable is when meetting the conflagration, the fire prevention silica gel cloth on its top layer can solidify the sclerosis fast and form the protective layer that the one deck is dense including with the cable cladding, and then protects the cable, avoids the cable to catch fire.
Drawings
FIG. 1 is a schematic view of the test group P with the flameproof silica gel cloth unburned in parts by weight of the raw material components.
Fig. 2 is a schematic view of the fire-retardant silica gel cloth of the raw material components in parts by weight in test group P during combustion.
Fig. 3 is a schematic view of the fire-retardant silica gel sheet of the raw material components in test group P after burning.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the tables in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art with the understanding of the inventive concept of the present invention are within the scope of the present invention.
The invention discloses fireproof silica gel cloth, which comprises 80-120 parts of methyl vinyl silicone rubber, 20-30 parts of ceramic flame retardant, 10-20 parts of ammonium polyphosphate flame retardant, 5-15 parts of halogen-free flame retardant, 0.6-1 part of coupling agent, 1.3-1.7 parts of crosslinking agent, 0.1-0.3 part of inhibitor and 1.8-2.2 parts of platinum catalyst, wherein the coupling agent is gamma-methacryloxypropyl trimethoxysilane, the crosslinking agent is hydrogen-containing silicone oil, the inhibitor is polyether modified dimethyl siloxane, the types and manufacturers of all the raw materials are shown in table 1, and the preparation method is as follows:
s1: plasticating: plasticating the methyl vinyl silicone rubber at normal temperature, and stirring for 10 minutes;
s2: mixing: adding a flame retardant and a coupling agent into the internally mixed methyl vinyl silicone rubber, mixing, and mixing for 1 hour at 120 ℃;
s3: and (3) cooling: naturally cooling the mixed methyl vinyl silicone rubber to normal temperature;
s4: open mixing: adding a vulcanizing agent and a platinum catalyst into the mixed methyl vinyl silicone rubber, and open-milling for 15 minutes at 18 ℃;
s5: rolling: rolling the milled methyl vinyl silicone rubber into sheets;
s6: and (3) vulcanization: heating the crushed methyl vinyl silicone rubber, and baking for 8 minutes at 150 ℃;
s7: and (3) cooling: and naturally cooling the vulcanized methyl vinyl silicone rubber to normal temperature.
Table 1: the type and manufacturer of the raw materials in this embodiment
The specific embodiment is as follows:
the test method comprises the following steps: adopt the fire-proof silica gel cloth of different weight shares raw materials component to carry out flammability test (vertical combustion), 3 groups of control groups and 9 groups of test groups are designed altogether, be control group A ~ control group C and test group D ~ test group L respectively, fire-proof silica gel cloth in the control group A only adds the ceramic fire retardant, fire-proof silica gel cloth in the control group B only adds the ammonium polyphosphate fire retardant, fire-proof silica gel cloth in the control group C only adds the halogen-free fire retardant, fire-proof silica gel cloth in the test group D ~ test group L all adds 3 kinds of fire retardants, every group all includes 5 fire-proof silica gel cloth and the fire-proof silica gel cloth that the intragroup fire-proof silica gel cloth was tailor from the different samples of the same weight shares raw materials component, the size of every piece of fire-proof silica gel cloth is: 125 mm. times.13.0 mm. times.1.2 mm.
And (4) testing standard: UL 94-2017.
Testing equipment: horizontal and vertical burning tester (model: RH-6033B).
And (3) testing treatment: the samples to be tested are placed for 48h under the environment conditions of 23 +/-2 ℃ and 50 +/-10% RH, and the aging treatment for 168h at 70 ℃ and the drying treatment for 4h at normal temperature are not carried out on all groups of samples in the test.
The testing steps are as follows: the flame height is 20 +/-1 mm, the Bunsen burner is placed at the right center position below a sample to be tested, the distance between the nozzle of the Bunsen burner and the bottom end of the sample is 10 +/-1 mm, the ignition time is 10 +/-0.5 s, the Bunsen burner is moved away at a speed of 300mm/sec for at least 150mm after being ignited for 10 +/-0.5 s, the after flame time t1 is recorded, the Bunsen burner is immediately ignited for 10 +/-0.5 s when the after flame stops, the Bunsen burner is moved away at a speed of 300mm/sec for at least 150mm after being ignited for 10 +/-0.5 s, and the after flame time t2 and the after flame time t3 are recorded.
The vertical burning test is carried out on the fireproof silica gel cloth which comprises the following 6 components in parts by weight:
table 2: raw material components of fireproof silica gel cloth
Table 3: criterion of evaluation
Note: t1, t2 is the after flame time, t3 is the after flame time
Table 4: test results of control group A
Table 5: test results of control group B
Table 6: test results of control group C
Table 7: test group D test results
Table 8: test group E test results
Table 9: test group F test results
Table 10: test group G test results
Table 11: test group H test results
Table 12: test group I test results
Table 13: test group J test results
Table 14: test group K test results
Table 15: test results of test group L
And (4) test conclusion: comparing the data in tables 4 to 15, it can be seen that the normal temperature test results of the samples added with the single flame retardants all meet the requirements of UL 94-2017V-2, and the normal temperature test results of the samples added with the three flame retardants all meet the requirements of UL 94-2017V-0 and UL 94-2017V-1, so that the flame retardant effect of the fireproof silica gel cloth is better than that of the fireproof silica gel cloth added with the single flame retardants. From table 9 to table 13, along with the increase of fire retardant total amount, the flame retardant efficiency of fire prevention silicon rubber cloth improves gradually, when the amount of fire retardant reaches certain volume, the flame retardant efficiency of fire prevention silicon rubber cloth no longer has obvious improvement, and experimental group E, experimental group I, the fire prevention silicon rubber cloth in experimental group J and the experimental group L material is more viscous in process of production, can glue on the cylinder during production, especially experimental group E and experimental group J, be difficult to the shaping during production, the material is extravagant serious, and the cost is higher.
And (3) carrying out physical property detection on the silica gel cloth of the flame retardants with three different weight parts in the test groups H-J:
table 16: product specification parameters of test group H-test group J fireproof silica gel cloth
Table 17: physical property table of fireproof silica gel cloth of test group H to test group J
And (4) test conclusion: according to the data in table 17, the physical properties of the fire-proof silica gel cloth in the test group H to the test group J can all reach the normal standard, but the tensile strength and the tearing performance of the fire-proof silica gel cloth are reduced with the increase of the total weight component of the flame retardant, wherein the physical properties of the fire-proof silica gel cloth in the test group H are better, and then the specific gravity, the hardness and the heat conductivity coefficient of the fire-proof silica gel cloth in the test group H are tested, and the results all meet the normal standard.
Use the fire prevention silicon rubber cloth of total weight component fire retardant ratio in experimental group H as the design contrast test of preferred embodiment, verify the influence of the volume of three kinds of fire retardants in the fire retardant of same total weight component to fire prevention silicon rubber cloth flame retardant efficiency, design 3 experimental groups altogether, be experimental group P to experimental group R respectively, every group all includes 5 fire prevention silicon rubber cloth and the fire prevention silicon rubber cloth that the fire prevention silicon rubber cloth in the group was tailor from the different samples of same weight part raw materials component, the size of every fire prevention silicon rubber cloth is: 125 mm. times.13.0 mm. times.1.2 mm, and the flammability test (vertical burning) was conducted in the above-described test method.
Table 18: component table of silicon adhesive tapes in test group P-test group R
Table 19: test group P test results
Table 20: test group Q test results
Table 21: test results of test group R
And (4) test conclusion: comparing the data in tables 19 to 21, it can be seen that, under the condition that the total ratio of the flame retardants is not changed, the ratio of the three flame retardants to each other has little influence on the flame retardant effect of the fireproof silica gel cloth, the normal temperature test results of the samples of the flame retardants with the three ratios all meet the requirements of UL 94-2017V-0, but the fireproof silica gel cloth in the test group Q generates more smoke during the combustion test, the smoke generated during the combustion test of the fireproof silica gel cloth in the test group P and the test group R is less, in addition, the protective layer formed after the fireproof silica gel cloth in the test group P is cured and hardened is more compact, the ceramization is more obvious, and the cable is better in protection, so that the ceramization flame retardants are used as the main material, and the ammonium polyphosphate flame retardants and the halogen-free flame retardants are used as the auxiliary material, and the performances of the fireproof silica gel cloth are better.
In order to more intuitively show the combustion state of the fireproof silica gel cloth, the applicant performs a combustion test on the fireproof silica gel cloth of the raw material components in parts by weight in the test group P, the temperature of flame in the combustion test is 1000 ℃, the specific combustion conditions are shown in figures 1, 2 and 3, and as can be seen from the figures, the fireproof silica gel cloth does not generate obvious smoke and flame in the combustion process, the fireproof silica gel cloth does not shrink obviously, and a protective layer formed after the fireproof silica gel cloth is hardened at a high temperature is in a continuous compact state and cannot diffuse obviously from a combustion center point to an edge.
The cable protection test is carried out on the fireproof silica gel cloth of the raw material component flame retardant in total weight of the test group P, three groups of tests are designed, namely a test group S to a test group U, wherein the coupling agent in the test group S adopts gamma-methacryloxypropyl trimethoxy silane, the coupling agent in the test group T adopts gamma-glycidoxypropyl trimethoxy silane (a manufacturer: KH-560, a product), and the coupling agent in the test group U adopts gamma-aminopropyl triethoxy silane (a manufacturer: KH-550, a product: Kyozhou Kyosha chemical Co., a product).
Each group comprises 3 pieces of fireproof silica gel cloth, the fireproof silica gel cloth in each group is cut from different samples of the same raw material components in parts by weight, the 3 pieces of fireproof silica gel cloth in each group are respectively coated on the outer surfaces of cables (manufacturers: Chengtai electric wires and cables, type: BVV25) of the same type, and a combustion test is carried out on the cables coated with the fireproof silica gel cloth through a flame gun.
Table 22: cable protective test data
And (4) test conclusion: the cable coated with the fireproof silica gel cloth of the raw material components in the test group P has excellent flame retardant performance, the fireproof silica gel cloth on the surface layer of the cable can be kept to be a solidified protective layer below 1100 ℃ to protect the cable, the cable can be effectively prevented from catching fire, and when the temperature exceeds 1100 ℃, the solidified protective layer formed by the fireproof silica gel cloth begins to gradually drop oily substances. However, the protective layer formed by the fireproof silica gel cloth in the test group S at high temperature is the most compact, the surface is the most complete, no obvious pits or cracks are formed, and the cable is best in protection effect, so that it can be concluded that the synergistic effect between the gamma-methacryloxypropyltrimethoxysilane serving as the coupling agent and the three flame retardants is better, and the fireproof silica gel cloth has better flame retardant effect.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a fire prevention silica gel cloth which characterized in that: the fireproof silica gel cloth comprises the following raw material components in parts by weight: 80-120 parts of methyl vinyl silicone rubber, 35-65 parts of flame retardant, 0.6-1 part of coupling agent, 1.3-1.7 parts of cross-linking agent, 0.1-0.3 part of inhibitor and 1.8-2.2 parts of catalyst; the flame retardant is a combination of a ceramic flame retardant Ted-M101, an ammonium polyphosphate flame retardant and a halogen-free flame retardant MCA, wherein the ceramic flame retardant Ted-M101 comprises 20-30 parts by weight, the ammonium polyphosphate flame retardant comprises 10-20 parts by weight, and the halogen-free flame retardant MCA comprises 5-15 parts by weight.
2. The fireproof silicon rubber cloth according to claim 1, characterized in that: the cross-linking agent is hydrogen-containing silicone oil.
3. The fireproof silicon rubber cloth according to claim 1, characterized in that: the catalyst is a platinum catalyst.
4. The fireproof silicon rubber cloth according to claim 1, characterized in that: the coupling agent is one of gamma-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma-aminopropyltriethoxysilane.
5. A fire prevention silicon rubber cloth according to claim 4, characterized in that: the total mass ratio of the coupling agent to the raw materials is 1: (185-197).
6. The method for preparing a fire-proof silica gel cloth according to any one of claims 1 to 5, wherein the method comprises the following steps: the method comprises the following steps: s1: plasticating: plasticating the methyl vinyl silicone rubber at normal temperature, and stirring for 8-15 minutes; s2: mixing: adding a flame retardant and a coupling agent into the internally mixed methyl vinyl silicone rubber for mixing, and mixing for 0.8-1.2 hours at the temperature of 115-125 ℃; s3: and (3) cooling: naturally cooling the mixed methyl vinyl silicone rubber to normal temperature; s4: open mixing: adding a cross-linking agent, an inhibitor and a platinum catalyst into the mixed methyl vinyl silicone rubber, and open-milling for 10-20 minutes at 15-20 ℃; s5: rolling: rolling the milled methyl vinyl silicone rubber into sheets; s6: and (3) vulcanization: heating the rolled methyl vinyl silicone rubber, and baking at the temperature of 140-160 ℃ for 5-10 minutes; s7: and (3) cooling: and naturally cooling the vulcanized methyl vinyl silicone rubber to normal temperature.
7. A cable, characterized by: the outside of the cable is coated with the fireproof silica gel cloth according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451222.0A CN111592763B (en) | 2020-05-25 | 2020-05-25 | Fireproof silica gel cloth and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451222.0A CN111592763B (en) | 2020-05-25 | 2020-05-25 | Fireproof silica gel cloth and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111592763A CN111592763A (en) | 2020-08-28 |
| CN111592763B true CN111592763B (en) | 2022-03-08 |
Family
ID=72191431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010451222.0A Active CN111592763B (en) | 2020-05-25 | 2020-05-25 | Fireproof silica gel cloth and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111592763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113619214B (en) * | 2021-08-13 | 2023-07-25 | 重庆康明斯发动机有限公司 | Supercharger heat shield of high-rotation-speed diesel engine and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302343A (en) * | 2008-07-10 | 2008-11-12 | 天津市凯华绝缘材料有限公司 | Flame-retardant organosilicon powder encapsulating material for electronic component |
| CN110093037A (en) * | 2019-05-21 | 2019-08-06 | 苏州法思特新材料有限公司 | A kind of silicon rubber base thermal failure protective materials and the preparation method and application thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554919A (en) * | 2013-11-08 | 2014-02-05 | 深圳市沃尔核材股份有限公司 | Flame-retardant ceramic silicone rubber and preparation method thereof |
| CN105017776A (en) * | 2015-07-08 | 2015-11-04 | 上海大学 | Halogen-free flame-retardant high-strength ceramizable silicone rubber |
| CN105295379B (en) * | 2015-12-07 | 2019-01-01 | 武汉理工大学 | One kind can Ceramic silicon rubber composite material and preparation method |
| CN105860536A (en) * | 2016-04-13 | 2016-08-17 | 山东兆圭高分子材料科技有限公司 | Flame-retardant and fire-resistant ceramic silicone rubber and preparation method thereof |
| CN106479190A (en) * | 2016-11-13 | 2017-03-08 | 北京化工大学 | A kind of fire-resisting ceramic silicone rubber that can be used for middle temperature sulfuration and preparation method thereof |
| CN108997967A (en) * | 2018-08-09 | 2018-12-14 | 广州集泰化工股份有限公司 | A kind of high displacement performance fire prevention silicone sealant and preparation method thereof suitable for skyscraper |
| CN110845850B (en) * | 2019-11-07 | 2020-10-27 | 华南理工大学 | Ceramizable halogen-free flame-retardant silicone rubber and preparation method thereof |
-
2020
- 2020-05-25 CN CN202010451222.0A patent/CN111592763B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302343A (en) * | 2008-07-10 | 2008-11-12 | 天津市凯华绝缘材料有限公司 | Flame-retardant organosilicon powder encapsulating material for electronic component |
| CN110093037A (en) * | 2019-05-21 | 2019-08-06 | 苏州法思特新材料有限公司 | A kind of silicon rubber base thermal failure protective materials and the preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111592763A (en) | 2020-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103819758A (en) | Flame-retardant fire-resistant rubber composition and preparation method thereof, and flame-retardant fire-resistant rubber wrapping tape | |
| CA2502739C (en) | Fire resistant polymeric compositions | |
| CN104479232B (en) | A kind of 125 DEG C of low flue unhalogen flame-retarded ethylpropyl rubber CABLE MATERIALSs and preparation method thereof | |
| CN103739927B (en) | Temperature resistant grade is low-smoke zero-halogen cable material formula and the preparation method of 150 DEG C | |
| CN102250406A (en) | Polyethylene material with high flame resistance | |
| CN111592763B (en) | Fireproof silica gel cloth and preparation method and application thereof | |
| CN110534249B (en) | Long-life double-layer co-extrusion insulation irradiation cross-linking halogen-free low-smoke flame-retardant power cable | |
| CN114446534B (en) | Power cable for engineering building and preparation method thereof | |
| Tang et al. | Study on the flammability and thermal degradation of a novel intumescent flame retardant EPDM composite | |
| Siat et al. | Combustion behaviour of ethylene vinyl acetate copolymer‐based intumescent formulations using oxygen consumption calorimetry | |
| CN107316691A (en) | A kind of radiation proof flame-retardant composite fireproof cable | |
| CN106479190A (en) | A kind of fire-resisting ceramic silicone rubber that can be used for middle temperature sulfuration and preparation method thereof | |
| CN108912691A (en) | A kind of low loading halogen-free anti-flaming silicon rubber and preparation method thereof | |
| CN105237869A (en) | Halogen-free flame-retardant polyolefin electric cable | |
| CN110534248B (en) | Nuclear island fireproof cable | |
| CN116153575A (en) | Photovoltaic cable and preparation process thereof | |
| CN112466536B (en) | Jet flame and hydrocarbon flame resistant medium-voltage cable for offshore oil platform and manufacturing method thereof | |
| CN111073298A (en) | Flame-retardant plugging agent for substation and preparation method and use method thereof | |
| CN107245210A (en) | A kind of power equipment electric wire cable jacket material and preparation method thereof | |
| JPH09204824A (en) | Fire resistant cable | |
| CN109637730B (en) | High-efficiency fireproof flame-retardant long-life cable | |
| Sharma et al. | Flame retardant smoke suppressant protection for poly vinylchloride | |
| CN106589626A (en) | Environmental protection like flame-retardant elastomer material for electric appliance | |
| CN114163819B (en) | Electromagnetic shielding material and preparation process thereof | |
| CN114566323B (en) | Fire-resistant and insulating control cable for fire protection and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |