CN101787846B - Flame-retardant high-temperature vulcanized silicone rubber strips for doors and windows of buildings and preparation method thereof - Google Patents
Flame-retardant high-temperature vulcanized silicone rubber strips for doors and windows of buildings and preparation method thereof Download PDFInfo
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- CN101787846B CN101787846B CN2010101181701A CN201010118170A CN101787846B CN 101787846 B CN101787846 B CN 101787846B CN 2010101181701 A CN2010101181701 A CN 2010101181701A CN 201010118170 A CN201010118170 A CN 201010118170A CN 101787846 B CN101787846 B CN 101787846B
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Abstract
The invention discloses flame-retardant high-temperature vulcanized silicone rubber strips for doors and windows of buildings and a preparation method thereof. The method comprises the following steps: adding methyl vinyl silicone rubber, an inorganic flame retardant, fillers and a structural control agent into a kneading machine, dehydrating the mixture at the temperature of between 100 and 180 DEG C and the vacuum degree of between -0.06 and -0.10 MPa for 0.5 to 4 hours, and then cooling the mixture to produce compound rubber; thinning and milling masterbatch rubber, a vulcanizing agent and the compound rubber for 3 to 5 times at room temperature on a mill; cutting thinned compound rubber sheet into rubber strips with the width of between 4 and 6 centimeters and feeding the rubber strips to a screw extruder to extrude the rubber strips; and vulcanizing and forming the rubber strips through a high-temperature drying channel and finally performing a secondary vulcanization in a drying box to produce the flame-retardant high-temperature vulcanized silicone rubber strips for the doors and the windows of the buildings. The flame-retardant high-temperature vulcanized silicone rubber strips for the doors and the windows of the buildings overcome the defects of low hardness and difficult installation of common silicone rubber strips, have high flame-retardant performance and wide range of use temperature, and can be used under bad weather conditions.
Description
Technical field
The present invention relates to weather strip for building, relate in particular to a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape and preparation method thereof.
Background technology
The class that silicon rubber is output maximum in the organosilicon product, the kind trade mark is maximum.Different according to vulcanization and curing temperature, silicon rubber is divided into high temperature vulcanized (HTV) silicon rubber and room temperature vulcanization (RTV) silicon rubber two big classes.High-temperature silicon disulfide rubber is that the polysiloxane (being rubber) of HMW (molecular weight is generally 50～700,000) adds reinforced filling and other various additives, the employing organic peroxide is a vulcanizing agent, through extrusion forming (mold pressing, extrude, roll) or injection moulding, and at high temperature be cross-linked into the rubber-like product.Different with other organic synthesis rubber, the pure silicon rubber intensity is very low, must sneak into reinforced filling, vulcanizing agent, constitution controller and other auxiliary agents, through mixing evenly make melting silicone rubber after, could use the processing method of ordinary rubber, as mold pressing, extrude, calendering etc., under the heating pressurized conditions, be processed into various silastic products, the performance of these sulfuration back silastic products is except that outside the Pass having with rubber structure, performance, also with prescription, mixing facilities and the technology of melting silicone rubber, processing technology etc. have very big relation.
Domestic construction weather strip initial rubber is mainly based on modified polyvinyl chloride (PVC), sulfuration Ethylene Propylene Terpolymer (EPDM), thermoplasticity ethylene-propylene diene copolymer (EPDM/PP) at present.Chloride in the modified PVC weather strip, contain heavy metal in its stabilizing agent, do not meet environmental requirement.Beijing and coastal cities have been limited and have been used or superseded sealing bar; Sulfuration Ethylene Propylene Terpolymer weather strip, its sealing elasticity, persistence all have very big reinforcement than PVC adhesive tape, but the power consumption of polymer processing height, product can not be recycled, and cost is higher relatively, and country does not advocate use; Thermoplasticity Ethylene Propylene Terpolymer weather strip performance and application life are suitable with the sulfuration Ethylene Propylene Terpolymer, and power consumption of polymer processing is low, and proportion is little, and exit window rate height was promoted rapidly on building doors and windows in recent years.Present high-grade this type of weather strip of building multiselect, but this weather strip serviceability temperature scope is narrower than organosilicon, has limited its application region.Organosilicon is nonpoisonous and tasteless, the physiology inertia, and environmental friendliness is the unique rubber by U.S. FDA authentication of China so far, these excellent physical properties make it to be very suitable for architectural use.China is vast in territory, and the latitude span is big, and the north and south temperature difference is big, make the use of PVC, ethylene-propylene diene copolymer be subjected to serious restriction, and silastic sealing strip also can use the same life-span with door and window under the atrocious weather condition.
Along with the raising of country to the fire-retardant requirement of builing industry, it is inevitable development trend that the mixing adhesive tape of flame-retardant high-temperature vulcanized silicone rubber strips is applied to building doors and windows.Usually, silicone sealant obtains flame retardant effect by adding halogen flame or inorganic combustion inhibitor, though the flame retarding efficiency height of halogen flame, but generate the hydrogen halide that does not fire when being burning owing to its fire retardant mechanism, can produce secondary pollution to environment, simultaneously personnel are produced harm, use now progressively is under an embargo.The employing inorganic combustion inhibitor is a fire-retardant filler, compares with halogen flame, and they have the advantage of nontoxic, low cigarette, low corrosion.
The invention provides a kind of preparation method of flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape, be applied to the sealing of building doors and windows, guaranteeing that sealing joint strip has on the excellent mechanical performances basis, has good anti-flammability.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape and preparation method thereof is provided.
Use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape comprises in its component of weight portion:
Methyl vinyl silicone rubber 100
Inorganic combustion inhibitor 70～150
Filler 50～150
Constitution controller 6～10
Vulcanizing agent 1～3
Look rubber master batch 0.5～1.5.
Described methyl vinyl silicone rubber, its molecular weight are 500,000～700,000, and the vinyl molar content is 0.16～0.23%.
Described inorganic combustion inhibitor is at least a in magnesium hydroxide, aluminium hydroxide, reactive hydrogen magnesia, active aluminium hydroxide, magnesium carbonate, Firebrake ZB or the basic zinc carbonate.
Described filler is at least a in fume colloidal silica, precipitated silica, calcium carbonate superfine powder, active nano calcium, silicon powder, quartz powder, kaolin or the silicon powder.
Described constitution controller is a hydroxyl-terminated injecting two methyl siloxane, and its viscosity is 300～4000mPas.
Described vulcanizing agent is benzoyl peroxide, cumyl peroxide, di-t-butyl peroxide, 2, and 5-dimethyl-2,5-di-t-butyl hexane peroxide or 2, at least a in the 4-dichlorobenzoyl peroxide.
The preparation method of the mixing adhesive tape of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips comprises the steps:
1) 100 weight portion methyl vinyl silicone rubbers, 70～150 weight portion inorganic combustion inhibitors, 50～150 weight portion fillers, 6～10 weight portion constitution controllers are added kneader, in 100～180 ℃, vacuum-0.06～-0.10MPa mediated 0.5～4 hour down, be cooled to room temperature, make elastomeric compound;
2) 100 weight portion elastomeric compounds, 0.5～1.5 weight portion look rubber master batch and 1～3 weight portion vulcanizing agent are carried out thin-pass 3～5 times in mill, make the elastomeric compound film;
3) the elastomeric compound film is cut into the adhesive tape of 4～6 cm widths, in the feeding screw extruder, extrudes adhesive tape;
4) will extrude adhesive tape directly once vulcanizes in 200～270 ℃ high temperature vulcanized drying tunnel;
5) adhesive tape of extruding after will once vulcanizing is put into 180～220 ℃ baking oven and is carried out post-cure, obtains use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape.
The present invention compares the excellent effect that has with existing building with the door and window sealing strip technology:
1) product employing inorganic combustion inhibitor is the halogen-free environment-friendly type flame-proof agent, has characteristics such as Halogen, low cigarette, low toxicity, low-corrosiveness, flame retarding efficiency height, environmentally safe.Fire protection flame retarding is good, flame retardant rating can 〉=the FV-2 level;
2) product has better elastic and higher hardness, and is weather-proof, ageing properties is excellent;
3) product preparation method is simple, and production equipment is conventional equipment, and the no three wastes produce in the manufacturing process;
4) product provides a kind of novel use in construction of door and window flame retardant sealant bar, has improved the quality of building;
5) product easy construction can be according to the shape of door and window, the sealing joint strip of preparation difformity different size, and plasticity is strong.
The specific embodiment
Characteristics of the present invention are to be raw material with the ethylene methacrylic radical siloxane, adopt inorganic combustion inhibitor, make the use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape with good flame-retardance, elasticity and high rigidity.
Still it should be noted that: the equal buyable of above-described methyl vinyl silicone rubber, inorganic combustion inhibitor, filler, constitution controller, vulcanizing agent and look rubber master batch obtains; Described kneader and other equipment are existing conventional equipment.
Below by embodiment the present invention is carried out concrete description, be necessary to be pointed out that at this following examples only are used for the present invention is further specified, can not be interpreted as restriction protection scope of the present invention.In each embodiment, except that indicating especially, raw materials used equal buyable obtains.
Embodiment 1
Adding 100 parts by weight of ethylene base content 0.16mol%, molecular weight are 500,000 methyl vinyl silicone rubber in kneader, add the hydroxy silicon oil that 6 weight portion viscosity are 4000mPa.s, the white carbon of 50 weight portions and the active aluminium hydroxide of 150 weight portions more successively, mediated 4 hours down in 100 ℃ of temperature, vacuum-0.10MPa, make elastomeric compound.Above-mentioned elastomeric compound is cooled to room temperature, adds look rubber master batch and 1 part of vulcanizing agent 2 of 0.5 part in the 100 weight portion elastomeric compounds, the 4-dichlorobenzoyl peroxide makes the elastomeric compound film after thin-pass in the mill 5 times.This film is cut into 4 centimetres, and the feeding extruder is extruded adhesive tape, once vulcanizes in 200 ℃ high temperature vulcanized drying tunnel extruding adhesive tape; Adhesive tape after once vulcanizing is put into 180 ℃ of baking ovens carry out post-cure, make use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape I.After parking, adhesive tape I cooling carries out performance test (wherein flame retardant rating is tested by GB/T10707-2008).The result is as shown in table 1.
Table 1
Embodiment 2
With 100 parts by weight of ethylene base content is that 0.23mol%, molecular weight are that 700,000 methyl vinyl silicone rubber, 150 weight portion white carbons, 70 weight portion aluminium hydroxides, 10 weight portion viscosity are that the hydroxy silicon oil of 300mPa.s adds kneader, mediated 2 hours down in 180 ℃, vacuum-0.06MPa, be cooled to room temperature, make elastomeric compound.Above-mentioned elastomeric compound is cooled to room temperature, adds look rubber master batch and 3 parts of vulcanizing agent benzoyl peroxides of 1.5 parts in the 100 weight portion elastomeric compounds, after thin-pass in the mill 3 times, make the elastomeric compound film.This film is cut into 6 centimetres, and the feeding extruder is extruded adhesive tape, once vulcanizes in 270 ℃ high temperature vulcanized drying tunnel extruding adhesive tape; Adhesive tape after once vulcanizing is put into 220 ℃ of baking ovens carry out post-cure, make use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape II.The performance test results is as shown in table 2.
Table 2
Embodiment 3
In kneader, add 100 parts by weight of ethylene base content 0.18mol%, molecular weight and be 600,000 methyl vinyl silicone rubber, add the hydroxy silicon oil that 8 weight portion viscosity are 1000mPa.s, the white carbon of 100 weight portions and the reactive hydrogen magnesia of 100 weight portions more successively, mediated 0.5 hour down in 120 ℃ of temperature, vacuum-0.08MPa, make elastomeric compound.Above-mentioned elastomeric compound is cooled to room temperature, adds look rubber master batch and 2 parts of vulcanizing agent cumyl peroxides of 1 part in the 100 weight portion elastomeric compounds, after thin-pass in the mill 4 times, make the elastomeric compound film.This film is cut into 5 centimetres, and the feeding extruder is extruded adhesive tape, once vulcanizes in 230 ℃ high temperature vulcanized drying tunnel extruding adhesive tape; Adhesive tape after once vulcanizing is put into 200 ℃ of baking ovens carry out post-cure, make use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape III.The performance test results is as shown in table 3.
Table 3
Embodiment 4
Adding 100 parts by weight of ethylene base content 0.18mol%, molecular weight are 650,000 methyl vinyl silicone rubber in kneader, add the hydroxy silicon oil that 6 weight portion viscosity are 1500mPa.s, the white carbon of 100 weight portions and the Firebrake ZB of 120 weight portions more successively, mediated 1 hour down in 150 ℃ of temperature, vacuum-0.09MPa, make elastomeric compound.Above-mentioned elastomeric compound is cooled to room temperature, adds look rubber master batch and 1.5 parts of vulcanizing agent cumyl peroxides of 0.8 part in the 100 weight portion elastomeric compounds, after thin-pass in the mill 4 times, make the elastomeric compound film.This film is cut into 5 centimetres, and the feeding extruder is extruded adhesive tape, once vulcanizes in 220 ℃ high temperature vulcanized drying tunnel extruding adhesive tape; Adhesive tape after once vulcanizing is put into 200 ℃ of baking ovens carry out post-cure, make use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape IV.The performance test results is as shown in table 4.
Table 4
Claims (7)
1. use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape is characterized in that comprising in its component of weight portion:
2. a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape according to claim 1 is characterized in that described methyl vinyl silicone rubber, and its molecular weight is 500,000～700,000, and the vinyl molar content is 0.16～0.23%.
3. a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape according to claim 1 is characterized in that described inorganic combustion inhibitor is: at least a in reactive hydrogen magnesia, active aluminium hydroxide, magnesium carbonate, Firebrake ZB or the basic zinc carbonate.
4. a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape according to claim 1, the described filler of its feature are at least a in fume colloidal silica, precipitated silica, calcium carbonate superfine powder, active nano calcium, silicon powder, quartz powder, kaolin or the silicon powder.
5. a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape according to claim 1, the described constitution controller of its feature is a hydroxyl-terminated injecting two methyl siloxane, its viscosity is 300～4000mPas.
6. a kind of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape according to claim 1, it is characterized in that described vulcanizing agent is benzoyl peroxide, cumyl peroxide, di-t-butyl peroxide, 2,5-dimethyl-2,5-di-t-butyl hexane peroxide or 2, at least a in the 4-dichlorobenzoyl peroxide.
7. the preparation method of use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape according to claim 1 is characterized in that comprising the steps:
1) 100 weight portion methyl vinyl silicone rubbers, 70～150 weight portion inorganic combustion inhibitors, 50～150 weight portion fillers, 6～10 weight portion constitution controllers are added kneader, in 100～180 ℃, vacuum-0.06～-0.10MPa mediated 0.5～4 hour down, be cooled to room temperature, make elastomeric compound;
2) elastomeric compound, 0.5～1.5 weight portion look rubber master batch and 1～3 weight portion vulcanizing agent with the step 1) gained carries out thin-pass 3～5 times in mill, makes the elastomeric compound film;
3) the elastomeric compound film is cut into the adhesive tape of 4～6 cm widths, in the feeding screw extruder, extrudes adhesive tape;
4) will extrude adhesive tape directly once vulcanizes in 200～270 ℃ high temperature vulcanized drying tunnel;
5) adhesive tape of extruding after will once vulcanizing is put into 180～220 ℃ baking oven and is carried out post-cure, obtains use in construction of door and window flame-retardant high-temperature vulcanized silicone rubber strips adhesive tape.
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| CN102964836B (en) * | 2011-08-29 | 2014-07-30 | 深圳市沃尔核材股份有限公司 | Ceramicized silicon rubber, preparation method and application |
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| CN108948741A (en) * | 2018-08-02 | 2018-12-07 | 广州市瑞合新材料科技有限公司 | Flame-retardant silicone rubber composition and preparation method thereof |
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| CN115433020B (en) * | 2022-08-20 | 2023-04-28 | 浙江大学 | Preparation method of silica aerogel heat insulation material |
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| US7015284B2 (en) * | 2004-01-06 | 2006-03-21 | The Goodyear Tire & Rubber Company | Thermoplastic elastomer composition |
| CN100494283C (en) * | 2007-05-16 | 2009-06-03 | 石建国 | Silica-gel foaming-gel heat-insulation pipe and preparing method |
| CN101412835B (en) * | 2008-11-28 | 2011-01-19 | 华南理工大学 | Blend of fluorubber and silastic, and preparation thereof |
| CN101643583B (en) * | 2009-09-10 | 2011-12-07 | 合肥凯蒙新材料有限公司 | Dual composition addition type room temperature silicon disulfide rubber containing phase transformation material |
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Address after: 311305 No. 57, Tianzhu street, Ling'an Economic Development Zone, Hangzhou, Zhejiang Patentee after: Zhejiang Lexus New Material Co. Ltd. Address before: 311305 No. 57, Tianzhu street, Ling'an Economic Development Zone, Hangzhou, Zhejiang Patentee before: Lingzhi Fine Chemical Co., Ltd., Zhejiang |