CN101634216B - Nanometer modified environment-friendly double-color sealing strip - Google Patents
Nanometer modified environment-friendly double-color sealing strip Download PDFInfo
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- CN101634216B CN101634216B CN2009101623032A CN200910162303A CN101634216B CN 101634216 B CN101634216 B CN 101634216B CN 2009101623032 A CN2009101623032 A CN 2009101623032A CN 200910162303 A CN200910162303 A CN 200910162303A CN 101634216 B CN101634216 B CN 101634216B
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Abstract
The invention provides a method for manufacturing a nanometer modified environment-friendly double-color sealing strip. The nanometer modified environment-friendly double-color sealing strip is compounded by a light-colored adhesive tape, a black adhesive tape, a sponge adhesive tape and steel strip skeleton. The light-colored part of the sealing strip has stable performance to resist yellowing, and does not release nitrosamine as a harmful gas; the cost is reduced by half; in the production process, no bug dust flies, so the production process is clean. The product can be widely used in medium and high grade door frames and windows for cars.
Description
Technical field
The present invention relates to a kind of weather strip for automobile, specifically, relate to a kind of automobile combined door frame sealed strip.
Background technology
Along with the develop rapidly of Domestic Automotive Industry, automobile door frame becomes the focus that market is paid close attention to rubber weather strip.Weather strip for automobile mainly plays sealing, damping and decoration function.Particularly, automotive sealant can effectively prevent in the objectionable impuritiess intrusion cars such as outside wind and rain, dust, reduce automobile under steam the vibrations that produce of positions such as door, window to keep riding comfort and the spatter property in the car, and the Working environment of sealed position or device is improved, working life is prolonged.Estimate that according to present Chinese automobile annual production the demand of Chinese automobile sealed strip in 2008 surpasses 1.8 hundred million meters, 2010 will be above 2.5 hundred million meters; The beginning of this year at the end of last year, country has put into effect a series of preferential measure and the development plan of automobile industry and the policy of automobile consumption such as " automobile is gone to the countryside " promotion to automobile with small output volumn, has greatly stimulated the development of domestic automobile industry.Recognize that according to related data country is to produce 2000 ten thousand per year to the yield target of domestic automobile industry, on average by 500 yuan of calculating of every chassis, sales volume can reach 100 hundred million to sealed strip, and domestic automobile sealing member industry has a high potential at present.
After the China's entry into the WTO, the industry of domestic automobile component is impacted, and external advanced manufacturer begins to build the supporting factory in native country in Chinese market, and the sealing member industry has also been proposed new challenge.Automotive industry is more and more higher to the performance requriements of weather strip for automobile especially car sealed strip, not only needs to have good stopping property and environment isolation features, and comfortableness, economy and attractive in appearance, safety, environmental-protecting performance requirement will be arranged.
Double-colored rubber weather strip in use more and more widely on the high car, also be subjected to human consumer's welcome more, this product has had sealed strip inherent function concurrently, uses at upholstery, can reach the level consistent, make car more apparent attractive in appearance, comfortable, luxurious, rich and honour with the upholstery tone.
In the world as the German METZLER company double-colored sealing strip for door frame light-colored part of producing mainly utilize thermoplastic elastic material TPV to make.Foreign capital affiliate and external manufacturer's product is more stable on anti-xanthochromia, has guaranteed the tone of product appearance, but has had the trace harmful gases nitrosamine to disengage, and nitrosamine is a carcinogenic substance, and permanent the suction is very unfavorable to HUMAN HEALTH in the car.
The elastomeric material of weather strip for automobile has three kinds of closely knit glue, gelatin sponge and vulcanites.The hardness of vulcanite can reach Shao Shi A95.The terpolymer EP rubber (EPDM) of ageing-resistant, low temperature resistant, the water-fast gas of the more use of the sizing material of sealed strip, resistance to chemical attack, particularly anti-ozone ageing.EPDM can be compound with steel band, braided steel wire band, TPE, flannelette, flocking, PU coating, organic silicon coating etc., guarantees automobile indoor and extraneous and the waterproof and dustproof, sound insulation of self, heat insulation, damping, abrasionproof and decoration function.The EPDM sealed strip can be stablized the use more than ten years generally speaking.Also can select to have the chloroprene rubber (CR) of good ozone resistance and good ageing-resistant performance.Consider the processing performance of sizing material commonly used, also need to select for use and use rubber sometimes, as natural rubber (NR) and CR and three kinds of rubber blendings of styrene-butadiene rubber(SBR) (SBR) or polyethylene (PE), EPDM and NR rubber and plastic type with the improvement ozone resistance.
Sealing strip for door frame commonly used is made up of the solid-core support and the tubulose sponge sealed strip of coextrusion, and sponge partly is subjected to providing sealing function after the compression of car door.This is traditional seal form, and sealing property is satisfactory generally speaking.But in some cases, this traditional structure is difficult to reach competent sealing function, and for example when the speed of a motor vehicle was very high, external air pressure may surpass the maximum sealing force that cavernous body provides, thereby causes seal failure.
Summary of the invention
The purpose of this invention is to provide a kind of nanometer modified environment-friendly double-color sealing strip, its oil resistant, anti-ozone, UV resistant irradiation, anti-xanthochromia, ageing-resistant, low temperature resistant, water-fast gas, resistance to chemical attack, no obnoxious flavour nitrosamine is disengaged, and meets attractive in appearance, healthy, environmental protection, resource-effective requirement.
In order to realize the object of the invention, a kind of nanometer modified environment-friendly double-color sealing strip of the present invention, it is by light adhesive tape, the black adhesive tape, sponge adhesive tape and four unifications of steel band skeleton are composited, wherein, wherein, each component and the weight proportion of described light adhesive tape are: 100 parts of EPDM (terpolymer EP rubber), nano kaoline 25-35 part, coarse whiting 25-35 part, talcum powder 20-25 part, titanium dioxide 10-15 part, paraffin oil 50-60 part, Vaseline 5-10 part, nano modification ZnO 5-10 part, PEG (polyoxyethylene glycol) 2-5 part, M (2-benzothiazolyl mercaptan) 1-3 part, BZ (zinc dibutyl dithiocarbamate) 1-3 part, TT (tetramethyl-thiuram disulfide) 0.5-1.0 part, S (sulphur) 1-3 part, DPTT (the two pentamethylene thiurams of four (six) sulfurations) 0.5-1.0 part, CaO 4-8 part;
Each component and the weight proportion of described black adhesive tape are: 100 parts of EPDM, carbon black N-550100-120 part, nano kaoline 40-60 part, paraffin oil 50-70 part, nano modification ZnO 5-10 part, STA (stearic acid) 1-3 part, PEG (polyoxyethylene glycol) 1-3 part, S (sulphur) 1-3 part, M (2-benzothiazolyl mercaptan) 1-3 part, BZ (zinc dibutyl dithiocarbamate) 1-3 part, EZ (zinc diethyldithiocarbamate) 1-3 part, PZ (ziram) 0.5-1.0 part, DPTT (the two pentamethylene thiurams of four (six) sulfurations) 0.5-1.0 part, CaO 4-8 part;
Each component and the weight proportion of described sponge adhesive tape are: 100 parts of EPDM, carbon black N-55050-80 part, nano kaoline 50-60 part, paraffin oil 50-70 part, nano modification ZnO 5-10 part, STA (stearic acid) 1-3 part, PEG (polyoxyethylene glycol) 1-3 part, S (sulphur) 1-3 part, M (2-benzothiazolyl mercaptan) 1-3 part, BZ (zinc dibutyl dithiocarbamate) 1-3 part, EZ (zinc diethyldithiocarbamate) 0.5-1.0 part, PZ (ziram) 0.5-1.0 part, DPTT (the two pentamethylene thiurams of four (six) sulfurations) 0.5-1.0 part, TT (tetramethyl-thiuram disulfide) 0.5-1.0 part, OT (4,4 ' OBSH) 3-5 part, ACK (ultra-fine Cellmic C 121) 2-4 part.
Preferably, each component and the weight proportion of described light adhesive tape are: 100 parts of EPDM, 30 parts of nano kaolines, 30 parts of coarse whitings, 20 parts of talcum powder, 10 parts of titanium dioxides, 50 parts of paraffin oils, 6 parts in Vaseline, 7 parts of nano modification ZnO, 4 parts of PEG, 1.5 parts of M, 1.5 parts of BZ, 0.6 part of TT, 1.5 parts of S, 0.8 part of DPTT, 5 parts of CaO.
Each component and the weight proportion of described black adhesive tape are: 100 parts of EPDM, 120 parts of N-550 (carbon black), 50 parts of nano kaolines, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of STA, 2 parts of PEG, 1.5 parts of S, 1.5 parts of M, 1.5 parts of BZ, EZ1.5 part, 0.6 part of PZ, 0.5 part of DPTT, 5 parts of CaO.
Each component and the weight proportion of described sponge adhesive tape are: 100 parts of EPDM, 70 parts of N-550 (carbon black), 60 parts of nano kaolines, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of STA, 2 parts of PEG, 1.2 parts of S, 1.2 parts of M, 1 part of BZ, 0.6 part of EZ, 0.5 part of PZ, 0.5 part of DPTT, 0.5 part of TT, 3.5 parts of OT, 2 parts of ACK.
Described part is weight part, can be this areas such as kilogram, gram, ton, jin weight unit commonly used.
Wherein, as filler be: N-550 (carbon black), nano kaoline, coarse whiting, talcum powder, titanium dioxide, nano modification ZnO.
What can be used as additive is: paraffin oil, STA (stearic acid), PEG (polyoxyethylene glycol), S (sulphur).
As promotor be: CaO, M (2-benzothiazolyl mercaptan), BZ (zinc dibutyl dithiocarbamate), EZ (zinc diethyldithiocarbamate), PZ (ziram), DPTT, TT (tetramethyl-thiuram disulfide).
As whipping agent be: OT (4,4 ' OBSH), ACK (ultra-fine Cellmic C 121).
The all raw materials of the present invention all can commercially availablely obtain.
Described nano kaoline can be selected KT-CLAY produced in USA.Its chemical ingredients is: SiO
2: 45.21%, Al
2O
3: 37.75%, Fe
2O
3: 1.01%, TiO
2: 1.97%, CaO:0.08%, MgO:0.12%, K
2O:0.18%, Na
2O:0.19%, L.O.I (loss on ignition): 13.65%.Its particle diameter: 0.49um, acidity-basicity ph value: 4.1-5.0.
KT-CLAY is applicable to multiple rubber, latex, and resin is the good distribution agent of carbon black and graphite.The sizing material handling ease that contains this product, the extrudate smooth surface, it can improve the viscosity of sizing material, increases very property and minimizing shrinking percentage.
Because KT-CLAY has the superfine particle diameter, so it has certain strengthening action, as improving the tensile strength of sizing material, and stress at definite elongation, hardness is improved wear resistance, water tolerance and chemical resistance.Fineness is even, can improve the foaming efficient of foaming product, the dimensional stability of extruded product and surface smoothness.Compare with white carbon black, be similar to white carbon black from the crystalline phenomenon because KT-CLAY handles can not produce through special process.
It adds the titanium dioxide composition, increases the anti-yellowing property of adhesive tape.Contain Al
2O
3And Fe
2O
3Deng reducing the whipping agent temperature, improve frothing percentage; The aperture fineness is even, extrudes dimensional stabilizing, increases surface smoothness.
Sealed strip of the present invention divides inside and outside two kinds of colors in appearance, and light is consistent with the automotive trim tone as cream colour, light gray etc., combines together with the car interior trim; The section centre is a black primary colors adhesive tape with steel band skeleton one, and this Section Design is main consistent with the automobile door frame sheet metal structural, is convenient to loading and unloading; It has been to seal damping effect that the foaming adhesive tape mainly acts on, and seals with the sealed strip of car door.Product has had sealing and decoration functions concurrently, has solved inharmonious on the sense organ that original sealing strip for door frame monochrome (black) brings.
Sealed strip of the present invention is mainly used in the doorframe and the vehicle window of domestic medium-to-high grade car, and the color of sealed strip becomes the part of upholstery tone in the car, in the car tone coordinate more, attractive in appearance, luxurious, vision is more comfortable.
Sealed strip Section Design of the present invention can be according to the characteristics of main engine plants' vehicle, on lip limit shape, size design in conjunction with the products characteristics of original equipment manufacturer, the structure of designing, be easy to pack into, the elastic attachment that can utilize sealed strip self again is in the steel guide groove, prevent that it from deviating from, shape, the size of outer scrap (bridge) are reasonable, and guide groove exterior finish and vehicle body fit tightly.
The main raw of sealed strip of the present invention has adopted follow-on terpolymer EP rubber, nanometer reinforcement packing material, high-quality steel band, product oil resistant, anti-ozone, UV resistant irradiation, anti-xanthochromia, ageing-resistant, low temperature resistant, water-fast gas, resistance to chemical attack, no obnoxious flavour nitrosamine is disengaged, and meets attractive in appearance, healthy, environmental protection, resource-effective requirement.
In light adhesive tape, utilize Nano filling as the reinforcement packing material, changed the difficulty of processing of filling with the white carbon black reinforcement, be convenient to sulfuration and placement, the adhesive tape of just utilizing the sulfuration that promoted subsequent handling behind the Nano filling and processing can stiffly not influence following process depositing process, increase anti-yellowing property, on cost, technology and performance, obtained good effect.
The black adhesive tape utilizes Nano filling to replace the part carbon black, can play the effect that reduces cost, and improve the viscosity of sizing material.
The sponge adhesive tape replaces lime carbonate has increased the intensity of sponge as the reinforcement packing material, improves expansion ratio and uniform in foaming.
The present invention makes reinforcing filler with nano-filler modified material substitution carbon black, white carbon black, and the anti-yellowing property and the product that have improved light adhesive tape do not have nitrosamine release.Nano filling contains TiO
2, SiO
2Deng 9 kinds of materials, be suitable for multiple rubber product, be the agent of sooty good distribution, the adhesive tape smooth surface of processing has improved the viscosity of adhesive tape, increases very property and reduces shrinking percentage; Because it has the superfine particle diameter, therefore have the reinforcement filling effect, improved tensile strength, stress at definite elongation, the hardness of adhesive tape, improve wear resistance, water tolerance and chemical resistance; Fineness is even, can improve the foaming efficient of foaming product, the dimensional stability of extruded product and surface smoothness, and it is big to reduce cost, dimensional stabilizing, expansion ratio; Compare with white carbon black, can not produce the phenomenon that is similar to white carbon black because Nano filling is handled through special process.The shortcoming of white carbon black during: a, ossify easily when adhesive tape is parked and need return white silk as the reinforcement packing material; B, white carbon black show acid, are unfavorable for sulfuration; C, product performance or quality fluctuation are bigger, and hardness and stability are bad.
Contain TiO
2Composition has very high whiteness and opacifying power, can design the needs of different clients to the interior trim tone, makes the product of production have better decoration function; Chemical stability is good, and acid and alkali-resistance, nondiscoloration also have the ultraviolet screening agent effect, can protect human body to reduce uviolizing, can improve the weathering resistance of light adhesive tape, keeps color stable, lasting of light adhesive tape.But also improved expansion ratio, and improve the dimensional stability and the surface smoothness of extruded product, reduced cost, Nano filling does not fly upward as other materials in mixing process, increase the production process clean-up performance, Working environment is improved, improved quality product.
In order further to improve stopping property, magnetic rubber can be introduced in the sponge adhesive tape.On the sponge adhesive tape, extrude one deck magnetisable coating (containing Z 250), directly play a role with the car body metal frame, thus the sealing function of increase cavernous body, and product all is that monochromatic (black) is main on color.
Sealed strip of the present invention adopts four unification complex method processing, and the light adhesive tape that just will process, black adhesive tape, sponge adhesive tape and high-quality steel band skeleton form by compound extruding.Specifically be to require, design four composite machine heads and mouthful mould, by three forcing machine co-extrusions according to product section and composite design.By 30 meters drying tunnels, by high temperature, microwave, hot empty sulfur foam typing are by the online punching of adhesive tape sponge, adhesive tape circumnutates, interrupts, surface spraying, shaper moulding, reaches four compound requirements, finishes in a streamline, guarantee quality product, saved the time, reduced cost.
The present invention adopts light adhesive tape, black adhesive tape, sponge adhesive tape is extruded respectively by three heads at temperature 50-70 ℃, add the steel band skeleton, four kinds of materials enter composite machine head together, composite machine head internal work temperature is carried out four kinds of materials about 75-80 ℃ common compound extruding enters next process mouth mould, promptly carries out preliminary mould molding in mouth shape model about 75-80 ℃; Entering next process after the moulding carries out high temperature vulcanized, high temperature vulcanized is exactly in the process time of 30-60 about second between 350-400 ℃, allow four kinds of materials after compound carry out high temperature vulcanized typing together from outside to inside, carry out microwave vulcanization behind the high-temperature shaping, microwave vulcanization is in 240-250 ℃ Working environment, matrix material to process carries out the microwave vulcanization typing of 60-100 about second from inside to outside, next also need hot-air vulcanization, it is the hot air circulation sulfuration about 260 ℃, be additional sulfuration and the endless vulcanization that the sulfuration phenomenon not in place that the first two road sulfuration might exist is carried out, make cure efficiency better, sulfidation also is four kinds of compound mixing and rubber sponge foaming processs of material, material becomes same complex body in the sulfuration back four, the inner one-tenth of adhesive tape fenestral fabric, make product performance more stable, increased the tensile strength and the physical and mechanical properties of product; Sulfuration back product needed is cooled to normal temperature on streamline, and then carries out skeleton and interrupt, and makes product soft more; Skeleton is to carry out the section structure moulding after interrupting operation; the product section is finished according to design requirements; product also will spray after the moulding; make product surface Paint Gloss; and product surface played a protective role; sponge adhesive tape one side is in use directly acted on metal frame, increased sealing, the vibration-damping function of sponge.
After testing, the key technical indexes of the double-colored four combined door frame sealed strips of the present invention is as follows:
Density, g/cm
3: 0.65 ± 0.15;
Compression set, %:[(23 ± 2) ℃/72h]≤35; [(70 ± 2) ℃/24h]≤50.
Temperature limit of brittleness, ℃ :-40;
Ozone proof: 20% (40 ± 2) ℃ of stretching, 72h, ozone concn (70 ± 0.2) ℃ * 10
-6
Flawless;
Content of nitrosamines is 0;
Anti-xanthochromia: the simulation atmospheric environment is subjected to solar ulatraviolet radiation, 9 hours color no changes of 50 ℃ of tests;
Corrodibility: (100 ± 2) ℃/24h does not become black;
Illumination aging resisting :≤1
Tensile strength: black glue 〉=7MPa, gelatin sponge 〉=2.5MPa, light glue 〉=7MPa.
Sealed strip of the present invention has been saved 50% cost; Adhesive tape outward appearance and feel are Paint Gloss, color is beautiful naturally; Shortened 30% mix the time (mixing time shortened to 8 minutes from 12 minutes), mixing process does not have material and flies upward, and has improved the Working environment quality, has improved efficient; Improve sulfuration efficient.Because tradition uses white carbon black to make the filler reinforcement material, white carbon black can influence the vulcanization rate and the state of vulcanization of sulphur, promotor, and the active height of white carbon black, to the sulfurized influence obviously; Simultaneously, in the EPDM of peroxide cure sizing material,, can significantly reduce the rate of crosslinking and the efficient of superoxide, DCP sulfurized sizing material is given off an unpleasant smell when the sulfuration molding because white carbon black is acid.Nano modified material has then remedied the deficiency of white carbon black, and vulcanization rate and degree improve more, have guaranteed quality product.Increase combined strength bination and fastness to rubbing.Nano modified material KT-CLAY is a super-fine material, strengthening action clearly, the viscosity of adhesive tape further improves, four compound extruding and a series of sulfuration, the product combined strength bination increases, wear resistance also improves; Adhesive tape is cleaned easily, does not stain; Sealed strip oil resistant, anti-ozone, UV resistant irradiation, ageing-resistant, low temperature resistant, water-fast gas, resistance to chemical attack; Sealed strip in use unharmful substance such as nitrosamine volatilizees, use health, environmental protection have been guaranteed, traditional product generally all has nitrosamine to disengage, nitrosamine is a carcinogenic substance, human body sucks in car for a long time, unfavorable HUMAN HEALTH, and this product there is no nitrosamine by detection and disengages after using nano modified material.Anti-yellowing property is superior, and it is poor to have remedied the product weathering resistance, easy to change, and the shortcoming of obvious aberration was arranged with other trim panel after use for some time.Product has sealing function and decoration functions concurrently, and anti-yellowing property is superior, and the simulation atmospheric environment is subjected to solar ulatraviolet radiation, 9 hours color no changes of 50 ℃ of tests.
According to experimental result: adopt the adhesive tape of nano modified material to be exposed to the sun the color no change 3 months.Follow the tracks of according to the short run entrucking, color is with the interior trim unanimity, and slipperiness is than class of the obvious raising of traditional material; Be applicable to medium-to-high grade car.Sealed strip extensively is suitable for medium-to-high grade car, interior trim light color is decorated.
Description of drawings
Fig. 1 is the process flow sheet of nanometer modified environment-friendly double-color four combined door frame sealed strips of the present invention;
Fig. 2 is the structural representation of nanometer modified environment-friendly double-color sealing strip of the present invention.
Embodiment
Further describe the present invention with embodiment below, help understanding, but described embodiment only is used to illustrate the present invention rather than restriction the present invention the present invention and advantage thereof, better effects if.
Each composition among the embodiment all is commercially available acquisitions.
Embodiment 1
A kind of nanometer modified environment-friendly double-color four combined door frame sealed strips of present embodiment, it is composited by light adhesive tape, black adhesive tape, sponge adhesive tape and four unifications of steel band skeleton.As shown in Figure 2.
Wherein, each component and the weight proportion of described light adhesive tape are: 100 parts of EPDM, 30 parts of nano kaoline KT-CLAY, 30 parts of coarse whitings, 20 parts of talcum powder, 10 parts of titanium dioxides, 50 parts of paraffin oils, 6 parts in Vaseline, 7 parts of nano modification ZnO (available from Hangzhou ten thousand scape novel material company limiteds), 4 parts of PEG, 1.5 parts of M, 1.5 parts of BZ, 0.6 part of TT, 1.5 parts of S, 0.8 part of DPTT, 5 parts of CaO.
Each component and the weight proportion of black adhesive tape are: 100 parts of EPDM, 120 parts of N-550,50 parts of nano kaoline KT-CLAY, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of STA, 2 parts of PEG, 1.5 parts of S, 1.5 parts of M, 1.5 parts of BZ, 1.5 parts of EZ, 0.6 part of PZ, 0.5 part of DPTT, 5 parts of CaO.
Each component and the weight proportion of sponge adhesive tape are: 100 parts of EPDM, 70 parts of N-550,60 parts of nano kaoline KT-CLAY, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of STA, 2 parts of PEG, 1.2 parts of S, 1.2 parts of M, 1 part of BZ, 0.6 part of EZ, 0.5 part of PZ, 0.5 part of DPTT, 0.5 part of TT, 3.5 parts of OT, 2 parts of ACK.
Wherein, every part by 1kg.
As shown in Figure 1, present embodiment adopts to be extruded light adhesive tape, black adhesive tape, sponge adhesive tape respectively by three heads 50 ℃ of temperature, add the steel band skeleton, four kinds of materials enter composite machine head together, composite machine head internal work temperature is carried out four kinds of materials about 75 ℃ common compound extruding enters next process mouth mould, promptly carries out preliminary mould molding in mouth shape model about 75 ℃; Entering next process after the moulding carries out high temperature vulcanized, high temperature vulcanized is exactly in the time about through 30 seconds between 400 ℃, allow four kinds of materials after compound carry out high temperature vulcanized typing together from outside to inside, carry out microwave vulcanization behind the high-temperature shaping, microwave vulcanization is in 250 ℃ Working environment, the matrix material of process is carried out microwave vulcanization typing about 60 seconds from inside to outside, next also need hot-air vulcanization, it is the hot air circulation sulfuration about 260 ℃, be additional sulfuration and the endless vulcanization that the sulfuration phenomenon not in place that the first two road sulfuration might exist is carried out, make cure efficiency better, sulfidation also is four kinds of compound mixing and rubber sponge foaming processs of material, material becomes same complex body in the sulfuration back four, the inner one-tenth of adhesive tape fenestral fabric, make product performance more stable, increased the tensile strength and the physical and mechanical properties of product; Sulfuration back product needed is cooled to normal temperature on streamline, and then carries out skeleton and interrupt, and makes product soft more; Skeleton is to carry out the section structure moulding after interrupting operation; the product section is finished according to design requirements; product also will spray after the moulding; make product surface Paint Gloss; and product surface played a protective role; sponge adhesive tape one side is in use directly acted on metal frame, increased sealing, the vibration-damping function of sponge.
The concrete structure of present embodiment sealed strip as shown in Figure 2, black adhesive tape parcel steel band skeleton, black adhesive tape surface is compound light adhesive tape on one side, the other side composite sponge adhesive tape.
In order further to improve stopping property, on the sponge adhesive tape, also extrude compound one deck magnetisable coating (Z 250 that contains 40nm), directly play a role with the car body metal frame, thus the sealing function of increase cavernous body, and product all is that monochromatic (black) is main on color.
After testing, the key technical indexes of present embodiment double-color sealing strip is as follows:
Density: 0.65g/cm
3
Compression set, %:[(23 ± 2) ℃/72h] 32; [(70 ± 2) ℃/24h] 45.
Temperature limit of brittleness :-45 ℃;
Ozone proof: 20% (40 ± 2) ℃ of stretching, 72h, ozone concn (70 ± 0.2) ℃ * 10
-6
Flawless; Content of nitrosamines is 0;
Anti-xanthochromia: the simulation atmospheric environment is subjected to solar ulatraviolet radiation, 9 hours color no changes of 50 ℃ of tests;
Corrodibility: (100 ± 2) ℃/24h does not become black;
Illumination aging resisting :≤1
Tensile strength: black glue 7.2MPa, gelatin sponge 2.5MPa, light glue 7.5MPa.
Embodiment 2
A kind of nanometer modified environment-friendly double-color four combined door frame sealed strips of present embodiment, it is composited by light adhesive tape, black adhesive tape, sponge adhesive tape and four unifications of steel band skeleton.Basic preparation process is with embodiment 1, and different is:
Wherein, each component and the weight proportion of described light adhesive tape are: 100 parts of EPDM, 25 parts of nano kaoline KT-CLAY, 35 parts of coarse whitings, 20 parts of talcum powder, 15 parts of titanium dioxides, 60 parts of paraffin oils, 5 parts in Vaseline, 10 parts of nano modification ZnO (available from Hangzhou ten thousand scape novel material company limiteds), 5 parts of PEG, 1 part of M, 3 parts of BZ, 0.5 part of TT, 3 parts of S, 0.5 part of DPTT, 8 parts of CaO.
Each component and the weight proportion of black adhesive tape are: 100 parts of EPDM, 110 parts of N-550,60 parts of nano kaoline KT-CLAY, 60 parts of paraffin oils, 10 parts of nano modification ZnO, 2 parts of STA, 1 part of PEG, 3 parts of S, 1 part of M, 1 part of BZ, 3 parts of EZ, 0.5 part of PZ, 0.5 part of DPTT, 4 parts of CaO.
Each component and the weight proportion of sponge adhesive tape are: 100 parts of EPDM, 80 parts of N-550,50 parts of nano kaoline KT-CLAY, 70 parts of paraffin oils, 8 parts of nano modification ZnO, 2 parts of STA, 3 parts of PEG, 1 part of S, 3 parts of M, 3 parts of BZ, 0.5 part of EZ, 0.6 part of PZ, 0.8 part of DPTT, 0.5 part of TT, 5 parts of OT, 4 parts of ACK.
After testing, the key technical indexes of present embodiment double-color sealing strip is as follows:
Density, g/cm
3: 0.58;
Compression set, %:[(23 ± 2) ℃/72h] 34; [(70 ± 2) ℃/24h] 50.
Temperature limit of brittleness :-48 ℃;
Ozone proof: 20% (40 ± 2) ℃ of stretching, 72h, ozone concn (70 ± 0.2) ℃ * 10
-6
Flawless; Content of nitrosamines is 0;
Anti-xanthochromia: the simulation atmospheric environment is subjected to solar ulatraviolet radiation, 9 hours color no changes of 50 ℃ of tests;
Corrodibility: (100 ± 2) ℃/24h does not become black;
Illumination aging resisting :≤1
Tensile strength: black glue 7.1MPa, gelatin sponge 2.6MPa, light glue 7.4MPa.
Embodiment 3
A kind of nanometer modified environment-friendly double-color four combined door frame sealed strips of present embodiment, it is composited by light adhesive tape, black adhesive tape, sponge adhesive tape and four unifications of steel band skeleton.Basic preparation process is with embodiment 1, and different is:
Wherein, each component and the weight proportion of described light adhesive tape are: 100 parts of EPDM, 35 parts of nano kaoline KT-CLAY, 25 parts of coarse whitings, 25 parts of talcum powder, 10 parts of titanium dioxides, 55 parts of paraffin oils, 10 parts in Vaseline, 5 parts of nano modification ZnO (available from Hangzhou ten thousand scape novel material company limiteds), 2 parts of PEG, 3 parts of M, 1 part of BZ, 1.0 parts of TT, 1 part of S, 1.0 parts of DPTT, 8 parts of CaO.
Each component and the weight proportion of black adhesive tape are: 100 parts of EPDM, 100 parts of N-550,40 parts of nano kaoline KT-CLAY, 50 parts of paraffin oils, 5 parts of nano modification ZnO, 3 parts of STA, 3 parts of PEG, 1 part of S, 3 parts of M, 3 parts of BZ, 1 part of EZ, 1.0 parts of PZ, 1.0 parts of DPTT, 5 parts of CaO.
Each component and the weight proportion of sponge adhesive tape are: 100 parts of EPDM, 50 parts of N-550,60 parts of nano kaoline KT-CLAY, 50 parts of paraffin oils, 10 parts of nano modification ZnO, 3 parts of STA, 1 part of PEG, 3 parts of S, 1 part of M, 2 parts of BZ, 1.0 parts of EZ, 1.0 parts of PZ, 1.0 parts of DPTT, 1.0 parts of TT, 3 parts of OT, 2 parts of ACK.
After testing, the key technical indexes of present embodiment double-color sealing strip is as follows:
Density: 0.72g/cm
3
Compression set, %:[(23 ± 2) ℃/72h] 35; [(70 ± 2) ℃/24h] 48.
Temperature limit of brittleness :-40 ℃;
Ozone proof: 20% (40 ± 2) ℃ of stretching, 72h, ozone concn (70 ± 0.2) ℃ * 10
-6
Flawless; Content of nitrosamines is 0;
Anti-xanthochromia: the simulation atmospheric environment is subjected to solar ulatraviolet radiation, 9 hours color no changes of 50 ℃ of tests;
Corrodibility: (100 ± 2) ℃/24h does not become black;
Illumination aging resisting :≤1
Tensile strength: black glue 7.0MPa, gelatin sponge 2.3MPa, light glue 7.6MPa.
Although the present invention has been done detailed explanation and quoted some specific exampless as proof, for a person skilled in the art, only otherwise leave the spirit and scope of the present invention, it is obvious doing various variations or correction.
Claims (11)
1. nanometer modified environment-friendly double-color sealing strip, it is characterized in that, it is by light adhesive tape, the black adhesive tape, sponge adhesive tape and four unifications of steel band skeleton are composited, wherein, each component and the weight proportion of described light adhesive tape are: 100 parts of EPDM, nano kaoline 25-35 part, coarse whiting 25-35 part, talcum powder 20-25 part, titanium dioxide 10-15 part, paraffin oil 50-60 part, Vaseline 5-10 part, nano modification ZnO 5-10 part, polyoxyethylene glycol 2-5 part, 2-benzothiazolyl mercaptan 1-3 part, zinc dibutyl dithiocarbamate 1-3 part, tetramethyl-thiuram disulfide 0.5-1.0 part, sulphur 1-3 part, the two pentamethylene thiuram 0.5-1.0 parts of four (six) sulfurations, CaO 4-8 part;
Each component and the weight proportion of described black adhesive tape are: 100 parts of EPDM, carbon black N-550100-120 part, nano kaoline 40-60 part, paraffin oil 50-70 part, nano modification ZnO 5-10 part, stearic acid 1-3 part, polyoxyethylene glycol 1-3 part, sulphur 1-3 part, 2-benzothiazolyl mercaptan 1-3 part, zinc dibutyl dithiocarbamate 1-3 part, zinc diethyldithiocarbamate 1-3 part, ziram 0.5-1.0 part, the two pentamethylene thiuram 0.5-1.0 parts of four (six) sulfurations, CaO 4-8 part;
Each component and the weight proportion of described sponge adhesive tape are: 100 parts of EPDM, carbon black N-55050-80 part, nano kaoline 50-60 part, paraffin oil 50-70 part, nano modification ZnO 5-10 part, stearic acid 1-3 part, polyoxyethylene glycol 1-3 part, sulphur 1-3 part, 2-benzothiazolyl mercaptan 1-3 part, zinc dibutyl dithiocarbamate 1-3 part, zinc diethyldithiocarbamate 0.5-1.0 part, ziram 0.5-1.0 part, the two pentamethylene thiuram 0.5-1.0 parts of four (six) sulfurations, tetramethyl-thiuram disulfide 0.5-1.0 part, 4,4 ' OBSH 3-5 part, ultra-fine Cellmic C 121 2-4 part.
2. sealed strip according to claim 1, it is characterized in that, described light adhesive tape substitutes with following each component and weight proportion: 100 parts of EPDM, 30 parts of nano kaolines, 30 parts of coarse whitings, 20 parts of talcum powder, 10 parts of titanium dioxides, 50 parts of paraffin oils, 6 parts in Vaseline, 7 parts of nano modification ZnO, 4 parts of polyoxyethylene glycol, 1.5 parts of 2-benzothiazolyl mercaptans, 1.5 parts of zinc dibutyl dithiocarbamates, 0.6 part of tetramethyl-thiuram disulfide, 1.5 parts in sulphur, 0.8 part of the two pentamethylene thiuram of four (six) sulfurations, 5 parts of CaO.
3. sealed strip according to claim 1 and 2, it is characterized in that, described black adhesive tape substitutes with following each component and weight proportion: 100 parts of EPDM, 120 parts of carbon black N-550,50 parts of nano kaolines, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of stearic acid, 2 parts of polyoxyethylene glycol, 1.5 parts in sulphur, 1.5 parts of 2-benzothiazolyl mercaptans, 1.5 parts of zinc dibutyl dithiocarbamates, 1.5 parts of zinc diethyldithiocarbamates, 0.6 part of ziram, 0.5 part of the two pentamethylene thiuram of four (six) sulfurations, CaO5 part.
4. sealed strip according to claim 3, it is characterized in that, described sponge adhesive tape is in order to each component and weight proportion are alternative down: 100 parts of EPDM, 70 parts of carbon black N-550,60 parts of nano kaolines, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of stearic acid, 2 parts of polyoxyethylene glycol, 1.2 parts in sulphur, 1.2 parts of 2-benzothiazolyl mercaptans, 1 part of zinc dibutyl dithiocarbamate, 0.6 part of zinc diethyldithiocarbamate, 0.5 part of ziram, 0.5 part of the two pentamethylene thiuram of four (six) sulfurations, 0.5 part of tetramethyl-thiuram disulfide, 4,3.5 parts of 4 ' OBSH, 2 parts of ultra-fine Cellmic C 121s.
5. sealed strip according to claim 1 and 2, it is characterized in that, described sponge adhesive tape is in order to each component and weight proportion are alternative down: 100 parts of EPDM, 70 parts of carbon black N-550,60 parts of nano kaolines, 70 parts of paraffin oils, 5 parts of nano modification ZnO, 1 part of stearic acid, 2 parts of polyoxyethylene glycol, 1.2 parts in sulphur, 1.2 parts of 2-benzothiazolyl mercaptans, 1 part of zinc dibutyl dithiocarbamate, 0.6 part of zinc diethyldithiocarbamate, 0.5 part of ziram, 0.5 part of the two pentamethylene thiuram of four (six) sulfurations, 0.5 part of tetramethyl-thiuram disulfide, 4,3.5 parts of 4 ' OBSH, 2 parts of ultra-fine Cellmic C 121s.
6. sealed strip according to claim 1 is characterized in that, described black adhesive tape parcel steel band skeleton, and described black adhesive tape surface is compound light adhesive tape on one side, the other side composite sponge adhesive tape.
7. according to claim 1,2,4,6 any described sealed strips, it is characterized in that compound one deck magnetisable coating on the described sponge adhesive tape.
8. sealed strip according to claim 3 is characterized in that, compound one deck magnetisable coating on the described sponge adhesive tape.
9. sealed strip according to claim 5 is characterized in that, compound one deck magnetisable coating on the described sponge adhesive tape.
10. prepare the method for any described sealed strip of claim 1-9, it is characterized in that, adopt light adhesive tape, black adhesive tape, sponge adhesive tape and steel band skeleton are formed by compound extruding.
11. method according to claim 10, it is characterized in that, it adopts extrudes light adhesive tape, black adhesive tape, sponge adhesive tape respectively by three heads at temperature 50-70 ℃, add the steel band skeleton, four kinds of materials enter composite machine head together, composite machine head internal work temperature enters next process mouth mould 75-80 ℃ of common compound extruding of carrying out four kinds of materials, carries out preliminary mould molding at 75-80 ℃; Enter next process after the moulding and carry out high temperature vulcanized typing, the high temperature vulcanized process between 350-400 ℃ the 30-60 time of second carried out microwave vulcanization behind the high-temperature shaping, microwave vulcanization is at 240-250 ℃, 60-100 second, carry out hot-air vulcanization then, be cooled to normal temperature.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102108212B (en) * | 2010-12-08 | 2014-02-05 | 江苏泰尔新材料股份有限公司 | Protective wax for fungus sticks of edible fungi and preparation method thereof |
| CN102336971A (en) * | 2011-07-19 | 2012-02-01 | 天津鹏翎胶管股份有限公司 | Microwave vulcanized ethylene propylene diene monomer (EPDM) sponge sheath and processing method thereof |
| CN102942744A (en) * | 2012-10-12 | 2013-02-27 | 天津鹏翎胶管股份有限公司 | Ethylene-propylene-diene monomer mould pressing abnormal shape sponge sheath rubber composition |
| CN104448470B (en) * | 2014-11-13 | 2017-01-18 | 泛亚汽车技术中心有限公司 | Magnetic EPDM foamed rubber and preparation method thereof |
| CN105440461A (en) * | 2016-01-26 | 2016-03-30 | 清河县元鑫汽车配件有限公司 | Sealing rubber strip for automobiles and production technology thereof |
| CN107234956A (en) * | 2017-06-14 | 2017-10-10 | 北京汽车股份有限公司 | Door weather strip and automobile |
| CN109849808A (en) * | 2019-02-15 | 2019-06-07 | 河北永昌车辆部件科技有限公司 | A kind of clad type sealing strip and preparation method and preparation facilities |
| CN110423408A (en) * | 2019-04-10 | 2019-11-08 | 上海正村橡塑工业有限公司 | Short vulcanization ethylene propylene diene rubber and preparation method thereof |
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| CN101230248A (en) * | 2008-01-04 | 2008-07-30 | 丹阳市万奔汽车配件有限公司 | Sealing strip using epdm rubber as host material |
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