CN1285692C - Fire resistant pressure-sensitive adhesive tape - Google Patents
Fire resistant pressure-sensitive adhesive tape Download PDFInfo
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- CN1285692C CN1285692C CN 03101420 CN03101420A CN1285692C CN 1285692 C CN1285692 C CN 1285692C CN 03101420 CN03101420 CN 03101420 CN 03101420 A CN03101420 A CN 03101420A CN 1285692 C CN1285692 C CN 1285692C
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Abstract
The present invention provides a flame retarding pressure sensitive adhesive tape with a base material, which has the advantages of odorlessness, no corrosion or discoloration of a stuck object and no release of halogen gas or sulfurous acid gas which has harmful effect for the environment when the adhesive tape is incinerated. The present invention discloses an odorless and no halogen flame retarding pressure sensitive adhesive tape with a fabric base material, a vulcanized natural rubber base flame retarding pressure sensitive adhesive layer is coated on the fabric base material of the adhesive tape, and an optimized and vulcanized natural rubber base flame retarding composition layer is also coated on the fabric base material. The two layers are obtained from viscosity increaser resin, flame retardants (metal hydroxide and an inorganic flame retarding auxiliary agent) and a natural rubber base elastomer vulcanized by adopting amino alkyl alkoxyl silicane. The optimized base material is the flame-retarded fabric base material obtained by using the natural rubber base flame retarding composition to dip a flammable fabric base material.
Description
Technical field
The present invention relates to preferably to have the fire-retardant pressure-sensitive adhesive tape of the odorless of cloth base material, it can be used for Electrical and Electronic part and electrical means parts, can not make the adherend variable color, with when burning exhausted and useless adhesive tape, can not discharge the gas that environment is had harmful effect, for example halogen gas or sulphurous acid gas.
Background technology
The pressure-sensitive adhesive tape with cloth base material that has been used for the Electrical and Electronic part so far just is being widely used for boning and is fixedly having an adherend of complicated shape, or is used for fixing the position that produces noise by the cloth base material that effective utilization has snappiness and absorption of vibrations characteristics.Its electrical insulation properties and electrochemically resistant corrodibility of having let alone.The pressure-sensitive adhesive tape that is used for these aspects must have the flame retardant resistance that meets the UL510FR standard usually.In pressure-sensitive adhesive tape with cloth base material, very big as the amount of the cloth of Combustion Source, and owing to contain many air in the fiber that constitutes cloth, its flame retardant resistance is relatively poor.Therefore, by in pressure sensitive adhesives, mixing and have the halogen-containing flame retardant of high flame retardant effect in a large number, or provide with the isolating flame-retardant layer of pressure sensitive adhesive adhesion coating and give flame retardant resistance based on the flame retardant bonded of antimony.
Pressure-sensitive adhesive as used herein, a kind of pressure-sensitive adhesive based on vulcanized rubber just is being extensive use of, because this tackiness agent has good tack, various adherends is had good tackiness, and well electrical insulation properties etc. also has thermal properties.
In recent years, in burning, produce the halogen-based flame retardants of halogen gas, contain the antimony base flame retardant of plumbous and arsenic, or the like list the target that environment protection is controlled in.And with sulphur be used for rubber (it be the main component of pressure-sensitive adhesive) sulfurized thiuram type accelerator and put the material that needs limit under, because they not only discharge sulphurous acid gas or nitrogen oxide when burning, and they are carcinogenic substances.Therefore, the pressure that uses the fire-retardant pressure-sensitive adhesive tape with cloth base material of these materials also to be subjected to tackling these restrictions.
Contain the fire-retardant pressure-sensitive adhesive tape corroding metal adherend with cloth base material of these materials or according to circumstances make by organic fibre, for example adherend variable color formed of paper or cloth, or be produced as the peculiar stink of halogen-based flame retardants unfriendly.
The approach that has the halogen-based flame retardants of these problems as an alternative, known method has in the substrate layer of formation of pressure-sensitive adhesive layer or pressure-sensitive adhesive tape the fusion carbamide compound (see, Japanese laid-open patent publication number 2001-81419), organo phosphorous compounds (publication number 2000-169811), red phosphorus (publication number 8-193187), aluminium hydroxide (Japanese patent application No. 2000-314960) or magnesium hydroxide (publication number 2001-2839).Yet the fact is not find effective means for the pressure-sensitive adhesive tape with cloth base material.
In order to make the fire-retardant pressure-sensitive adhesive tape with cloth base material, the flame-retardant standard that it meets according to UL510FR makes the continuous burning time be lower than for 60 seconds, must add a large amount of above-mentioned metal hydroxidess in pressure-sensitive adhesive.Yet, the performance that the shortcoming of these methods is be difficult to keep pressure-sensitive adhesive with to the cloth base material to contact bonding poor.For example urea or melamine compound be (for example for non-halogen organic fire-retardant, the sulfuric acid trimeric cyanamide) problem is except increasing add-on, low or the poor heat stability of its moisture resistance, perhaps this fire retardant is water miscible, therefore may be because the activity of its speeding-up ion wash-out causes the problem of galvanic etching.Therefore, this is not suitable material.The problem of organo phosphorous compounds is for example to produce phosphorio compound or when waste treatment environment is caused harmful effect when pressure-sensitive adhesive tape burns.
Be used to have the pressure-sensitive adhesive pressure sensitive adhesives of rubber-based normally of the fire-retardant pressure-sensitive adhesive tape of cloth base material, but compare with for example vinylformic acid and these pressure sensitive adhesives of silicone, this tackiness agent thermotolerance or solvent resistance are relatively poor.In order to overcome this problem, use vulcanizing agent at large, for example sulphur and compound thereof, superoxide, oxime, resol or maleimide in conjunction with vulcanization accelerator for example thiuram type accelerator or zinc oxide etc., carry out vulcanization reaction.Yet still the problem of Cun Zaiing is that this pressure-sensitive adhesive causes metallic corrosion or variable color, and the operational use time of admixture is short, and sulfuration needs for a long time or generation oxygen quenching effect in sulfuration.
And, the sulphurous acid gas that produces when the burning of sulfuration pressure-sensitive adhesive causes harmful effect to environment, or be environmental pollutant as the thiuram of vulcanization accelerator, thereby must minimum heart handle, or owing to decompose and to produce carcinogenic nitrosamine thereby limited by PRTR method (in Japan).
In order to address these problems, proposed to use the rubber vulcanization system of aminoalkyl group organoalkoxysilane.As the technical publications that relates to this system, the known coupling agent that has paper report to have amino effectively [is seen S.Yamashita for halogenated rubber, M.Shigaraki, M.Orita and R.G.Caoutch, Plast., 606,126 (1986)], one piece of paper reports that same coupling agent [sees M.Akiba and A for epoxidezed rubber is more effective when heating, S, Hashim, Prog.Polvm.Sci.22,475 (1997)], one piece of paper report does not have the rubber of functional group or two keys can adopt vinyl silanes to be used in combination the system with superoxide to vulcanize and [see M.Akiba and A.S.Hashim, Prog.polym.Sci.22,475 (1997)] or the like.
On the other hand, for natural rubber or based on the conventional rubber of diene, styrene-butadiene rubber(SBR) (SBR) for example, at " drawing opinion " [Hiroshi Okamoto, Nippon Gum Kvokai Shi (Journalof Japan Rubber Society), 62,819 (1989)] or a kind of method of describing in the similar paper be to be attached on the rubber molecular chain at the common weighting agent that a kind of usefulness is contained the coupling agent treatment of sulphur in the sulfur vulcanization process, yet, adopt the not report of technology of aminoalkyl group organoalkoxysilane sulfurized natural rubber.
In addition, as the distinctive problem of fire-retardant pressure-sensitive adhesive tape with cloth base material be: contact bonding difference or pressure-sensitive adhesive between base material and the pressure-sensitive adhesive stand to impact in the entire coating process possibly.As the case may be, because of having used the ion sizing agent galvanic etching etc. may occur when the woven cloth base material.
The purpose of this invention is to provide a kind of fire-retardant pressure-sensitive adhesive tape, it is an odorless, can not corrode adherend or makes the adherend variable color and can not discharge halogen gas or the sulphurous acid gas that environment is had harmful effect when burning.
Summary of the invention
As for addressing these problems the result of the broad research of carrying out, the present inventor has been found that, the aminoalkyl group organoalkoxysilane that contains amino end group by employing vulcanizes the natural rubber based elastomeric, and described natural rubber based elastomeric that will obtain and the inorganic combustion inhibitor fusion of preferably forming by metal hydroxides and inorganic fire-retarded auxiliary agent, the fire-retardant pressure-sensitive adhesive tape that has inflammable cloth base material of odorless, no sulphur, halogen the fire-retardant pressure-sensitive adhesive of thus obtained sulfurized natural rubber base is coated on the base material, even can be provided.Finish the present invention based on this discovery.The present invention includes following summary of the invention.
(1) a kind of fire-retardant pressure-sensitive adhesive tape, comprise the cloth base material and at least one main lip-deep fire-retardant formation of pressure-sensitive adhesive layer of described base material, described fire-retardant formation of pressure-sensitive adhesive layer comprises the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, aminoalkyl group organoalkoxysilane as vulcanizing agent, tackifier resins and inorganic combustion inhibitor, described natural rubber elastomer adopts described aminoalkyl group organoalkoxysilane sulfuration, and described adhesive tape satisfies the flame-retardant standard of UL510FR.
(2) as the fire-retardant pressure-sensitive adhesive tape described in above (1), wherein said fire-retardant pressure-sensitive adhesive tape further is included in the fire-retardant combination layer that has on the base material on described fire-retardant formation of pressure-sensitive adhesive layer one side, described fire-retardant combination layer comprises the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, aminoalkyl group organoalkoxysilane and inorganic combustion inhibitor as vulcanizing agent, described natural rubber based elastomeric adopts described aminoalkyl group organoalkoxysilane sulfuration, and the content of the described fire retardant in described fire-retardant combination layer is greater than the content of the described fire retardant in described fire-retardant formation of pressure-sensitive adhesive layer.
(3) as the fire-retardant pressure-sensitive adhesive tape described in above (1) or (2), wherein said cloth base material is by described fire-retardant formation of pressure-sensitive adhesive layer or described fire-retardant combination layer dipping, and described thus base material is embedded in the fire-retardant formation of pressure-sensitive adhesive layer of described dipping or in the described fire-retardant combination layer.
(4) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (3), wherein said base material has second surface on a side relative with described fire-retardant formation of pressure-sensitive adhesive layer, and has applied another fire-retardant combination layer on the second surface of described base material.
(5) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (4), wherein said fire retardant comprises metal hydroxides and inorganic fire-retarded auxiliary agent.
(6) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (5), wherein said fire-retardant combination layer further comprise tackifier resins and in the tackifier resins described in the described fire-retardant combination layer and the elastomeric weight ratio of described natural rubber based greater than this weight ratio in the described fire-retardant formation of pressure-sensitive adhesive layer.
(7) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (6), wherein said base material is inflammable cloth.
(8) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (7), wherein in the layer of each in described fire-retardant formation of pressure-sensitive adhesive layer and/or described fire-retardant combination layer, the content ratio of described aminoalkyl group organoalkoxysilane is 0.1 to 10 weight part/100 weight part natural rubber based elastomerics.
(9) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (8), wherein in the layer of each in described fire-retardant formation of pressure-sensitive adhesive layer and/or described fire-retardant combination layer, described inorganic combustion inhibitor has 150 to the 800 weight parts/100 weight part natural rubber based elastomerics of surpassing.
(10) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (9), the tackifier resins quantity that wherein said fire-retardant formation of pressure-sensitive adhesive layer comprises is the described natural rubber based elastomerics of 10 to 200 weight parts/100 weight parts in described formation of pressure-sensitive adhesive layer, the tackifier resins quantity that comprises with described fire-retardant combination layer is the described natural rubber based elastomerics of 10 to 200 weight parts/100 weight parts in described fire-retardant combination layer, and the tackifier resins that contains in described fire-retardant combination layer compares greater than tackifier resins that contains in described fire-retardant formation of pressure-sensitive adhesive layer and elastomeric blending ratio with elastomeric blending.
(11) as the fire-retardant pressure-sensitive adhesive tape described in above (2) to (10), wherein said fire-retardant combination layer is to be formed by two or more fire-retardant combination layers, and with fire-retardant combination layer that described fire-retardant formation of pressure-sensitive adhesive layer contacts in the tackifier resins that contains and elastomeric blending than greater than tackifier resins that in described fire-retardant formation of pressure-sensitive adhesive layer, contains and elastomeric blending ratio.
(12) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (11), wherein said fire retardant comprises aluminium hydroxide and/or magnesium hydroxide.
(13) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (12), wherein said fire retardant comprises and is selected from least a in the following material: stannic oxide, zinc metastannate, zinc hydroxyl stannate and zinc borate.
(14) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (13), wherein said aminoalkyl group organoalkoxysilane is selected from: N-β (aminoethyl) gamma-amino propyl group methyl dimethoxysilane, N-β (aminoethyl) gamma-amino propyl group methyldiethoxysilane, N-β (aminoethyl) gamma-amino propyl trimethoxy silicane, N-β (aminoethyl) γ-An Jibingjisanyiyangjiguiwan, gamma-amino propyl trimethoxy silicane and γ-An Jibingjisanyiyangjiguiwan.
(15) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (14), wherein said fire-retardant formation of pressure-sensitive adhesive layer and/or described fire-retardant combination further comprise at least a component that is selected from mineral filler, UV light absorber, antioxidant and oil.
(16) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (15), the consumption of wherein said fire-retardant combination layer is 3-250g/m
2
(17) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (16), the consumption of wherein said fire-retardant formation of pressure-sensitive adhesive layer is 20-600g/m
2
(18) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (17), wherein said inflammable cloth is by single thread or comprises the single woven fabric or the MIXED FABRIC of the union yarn braiding that is selected from staple fibre, cotton yarn, trevira, polyethylene fibre, polypropylene fibre and acrylic fibre, its fineness is 38-300 DENIER (denier), and the density of fabric all is being 25-450 root yarn/inch aspect warp thread and the weft yarn two.
(19) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (18), wherein said fire-retardant formation of pressure-sensitive adhesive layer and/or described fire-retardant combination layer are substantially devoid of sulphur and halogen.
(20) a kind of fire-retardant pressure-sensitive adhesive tape is included in the cloth base material that has fire-retardant combination layer and fire-retardant formation of pressure-sensitive adhesive layer on its at least one main surface successively; Described cloth base material is by described fire-retardant combination layer dipping and coating; Described fire-retardant combination layer comprises the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, the aminoalkyl group organoalkoxysilane, tackifier resins and the fire retardant of forming by metal hydroxides and inorganic fire-retarded auxiliary agent, described natural rubber based elastomeric vulcanizes with the aminoalkyl group organoalkoxysilane, and the mix proportions of described aminoalkyl group organoalkoxysilane is 0.1-10 weight part/100 weight part natural rubber based elastomerics; Described fire-retardant formation of pressure-sensitive adhesive layer comprises the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, the aminoalkyl group organoalkoxysilane, tackifier resins and the fire retardant of forming by metal hydroxides and inorganic fire-retarded auxiliary agent, described natural rubber based elastomeric is that the mix proportions of described aminoalkyl group organoalkoxysilane is 0.1-10 weight part/100 weight part natural rubber based elastomerics with the sulfuration of aminoalkyl group organoalkoxysilane; And described adhesive tape satisfies the flame-retardant standard of UL510FR.
(21) as the fire-retardant pressure-sensitive adhesive tape described in above (20), wherein in the layer of each in described fire-retardant combination layer and/or described fire-retardant formation of pressure-sensitive adhesive layer, the ratio of described inorganic fire-retarded auxiliary agent and described metal hydroxides blend is 10-50 weight part/100 parts by weight of metal hydroxide, and the total amount of described metal hydroxides and described inorganic fire-retarded auxiliary agent is that described fire-retardant pressure-sensitive adhesive tape is substantially devoid of sulphur greater than the natural rubber based elastomeric of 150 to 800 weight parts/100 weight parts in described layer or composition, antimony, plumbous, arsenic, phosphorus and halogen.
(22) as the fire-retardant pressure-sensitive adhesive tape described in above (1) to (21) in the purposes aspect TV part or the deflector coil.
The accompanying drawing summary
Fig. 1 has the cloth base material, comprises the sectional view of the fire-retardant pressure-sensitive adhesive tape of fire-retardant combination layer and fire-retardant formation of pressure-sensitive adhesive layer.
Fig. 2 has the cloth base material, comprises the sectional view of the fire-retardant pressure-sensitive adhesive tape of two fire-retardant combination layers and a fire-retardant formation of pressure-sensitive adhesive layer.
Fig. 3 is the sectional view with fire-retardant pressure-sensitive adhesive tape of cloth base material, and it is included in fire-retardant combination layer and fire-retardant formation of pressure-sensitive adhesive layer and the other fire-retardant combination layer on this base material another side on the one side of this base material.
Embodiment describes in detail
May produce stink or emit the fire retardant that contains halogen, antimony, lead or arsenic etc. that environment is had the gas of harmful effect for fear of using, metal hydroxides is as not having the alternatives of the alternative fire retardant of these harmful effects.
In the fire-retardant pressure-sensitive adhesive tape of the inflammable cloth base material of having of odorless and halogen, the metal hydroxides that preferably uses as fire retardant experiences dehydration reaction and demonstrates the self-extinguishing energy by increasing ignition temperature, but, for above-mentioned reasons, bring the problem of infringement pressure-sensitive adhesive performance in its formation of pressure-sensitive adhesive layer with big consumption adding pressure-sensitive adhesive adhesive tape.Yet, the present inventor has been found that the natural rubber based elastomeric can adopt the sulfuration of aminoalkyl group organoalkoxysilane, and when adopting aminoalkyl group organoalkoxysilane sulfurized natural rubber based elastomeric to be used for pressure-sensitive adhesive, even a large amount of inorganic combustion inhibitor, metal hydroxides for example, add formation of pressure-sensitive adhesive layer with inorganic fire-retarded auxiliary agent, also can obtain fabulous pressure-sensitive adhesive performance.
So far, do not know not have the natural rubber based elastomeric of functional group can adopt the sulfuration of aminoalkyl group organoalkoxysilane always, even or do not know to use and to show the fabulous performance of holding the fire retardant of forming by metal hydroxides and inorganic fire-retarded auxiliary agent, and fabulous and the cohesiveness that contacts adherend or cloth base material by elastomeric pressure-sensitive adhesive of aminoalkyl group organoalkoxysilane sulfurized natural rubber based or resin combination.According to the present invention, even inorganic combustion inhibitor is blended in formation of pressure-sensitive adhesive layer or the resin combination with big consumption, also can obtain the required adhesive performance of pressure-sensitive adhesive, for example to the contact cohesiveness and the adhesion strength (peeling off viscosity) of adherend or cloth base material.
The aminoalkyl group organoalkoxysilane can the sulfurized natural rubber based elastomeric, and this is preferred in the present invention, because it does not need (SH) to vulcanize with sulphur or thiol group.
Fire-retardant pressure-sensitive adhesive in pressure-sensitive adhesive tape of the present invention can be by for example tackifier resins, oil, weighting agent, antioxidant and the fire retardant and elastomer blended acquisition of employing aminoalkyl group organoalkoxysilane sulfurized natural rubber based be made up of metal hydroxides and flame retardant etc.Fire-retardant pressure-sensitive adhesive in the pressure-sensitive adhesive tape of the present invention can use low-yield sulfuration, is not subjected to the restraining effect of oxygen, and it is an odorless, and the metal that neither corrodes as adherend does not make paper, cloth or plastics variable color yet.
In a preferred embodiment of the invention, provide a kind of fire-retardant combination layer, and this layer enters randomly or exceeds beyond the cloth base material (being between fire-retardant formation of pressure-sensitive adhesive layer and the cloth base material) on the base material of fire-retardant formation of pressure-sensitive adhesive layer one side.This fire-retardant combination layer comprises natural rubber based elastomeric, aminoalkyl group organoalkoxysilane, tackifier resins and inorganic combustion inhibitor, and this natural rubber based elastomeric is with aminoalkyl group organoalkoxysilane sulfurized.Inorganic fire-retarded agent content in this fire-retardant combination layer can preferably be higher than the content in fire-retardant formation of pressure-sensitive adhesive layer.By this structure, in formation of pressure-sensitive adhesive layer, use, for the necessary fire retardant consumption of flame retardant level that adhesive tape is reached satisfy UL-510FR combustion test standard can reduce, can keep the high-performance of the pressure-sensitive adhesive of this formation of pressure-sensitive adhesive layer simultaneously by the inorganic combustion inhibitor of in this fire-retardant formation of pressure-sensitive adhesive layer, introducing relatively small amount.By will according to this fire-retardant formation of pressure-sensitive adhesive layer of this embodiment of the present invention and fire-retardant combination layer combine can easily obtain fabulous pressure-sensitive adhesive performance and high flame retardant level the two.This fire-retardant combination layer may comprise and the essentially identical composition of fire-retardant formation of pressure-sensitive adhesive layer, though the flame retardant agent content in the fire-retardant combination layer may be advantageously greater than the flame retardant agent content in the formation of pressure-sensitive adhesive layer.
This has the fire-retardant pressure-sensitive adhesive tape of cloth base material, it obtains by forming the fire-retardant formation of pressure-sensitive adhesive layer that randomly has at least one lip-deep fire-retardant combination layer of this base material, have and be rubber-based pressure-sensitive adhesive and distinctive snappiness of rubber base resin and viscosity, demonstrate fabulous electrochemically resistant corrodibility, and it be odorless and when pressure-sensitive adhesive tape burns, do not discharge halogen gas or the sulphurous acid gas that environment is had harmful effect.By using the cloth as base material, particularly inflammable cloth is cotton for example, and pressure-sensitive adhesive tape can have the fabulous snappiness of cloth inherent.
In a preferred embodiment of the invention, the cloth base material is carried out in the fire-retardant pressure-sensitive adhesive of natural rubber based, or fusion therein has the fire-retardant finish of flooding in the natural rubber based fire-retardant combination (when using) of fire retardant, tackifier and aminoalkyl group organoalkoxysilane.By this dipping fire-retardant finish to the cloth base material, also can reduce and in this formation of pressure-sensitive adhesive layer, use, be the adhesive tape necessary fire retardant consumption of the flame retardant level that obtains to satisfy UL-510FR combustion test standard.By this dip treating, stick to sizing agent on the cloth because coating is handled and can be fixed, and also can obtain fabulous electrochemically resistant corrodibility even without scrubbing processing.In addition, (therefore, applied the whole or partial surface of cloth base material), the base material side (side of exposure) of non-flammable adhesive tape has also been applied the fire retardation of flame resistant because fire-retardant pressure-sensitive adhesive or fire-retardant combination are dipped in the cloth base material.
According to the present invention, usually possible is: provide other flame-retardant layer on the base material opposite side relative with formation of pressure-sensitive adhesive layer, the preferred fire-retardant natural rubber based composition and use thereof in packaging of blended flame retardant, tackifier resins and aminoalkyl group organoalkoxysilane therein improves adhesive tape (adhesive tape that particularly has inflammable base material) with this and exposes the flame retardant properties of a side surface at it.This fire-retardant finish can be with flame-retarding adhesive or fire-retardant combination impregnated cloth base material, and can apply flame-retardant layer on exposure one side surface of cloth base material.And the composition of this flame-retardant layer can be identical or different with the composition of fire-retardant formation of pressure-sensitive adhesive layer or fire-retardant combination layer.
By the reference accompanying drawing odorless of the present invention and halogen-free flame-retardant pressure-sensitive adhesive tape are described below.
Fig. 1 has the cloth base material, comprises the sectional view of the fire-retardant pressure-sensitive adhesive tape of fire-retardant combination layer and fire-retardant formation of pressure-sensitive adhesive layer.Fig. 2 has the cloth base material, comprises the sectional view of the fire-retardant pressure-sensitive adhesive tape of two fire-retardant combination layers and a fire-retardant formation of pressure-sensitive adhesive layer.
In Fig. 1 and 2, reference number 1 is for example inflammable cloth, the 2nd, comprise for example natural rubber based fire-retardant combination layer of metal hydroxides and inorganic fire-retarded auxiliary agent and aminoalkyl group organoalkoxysilane of inorganic combustion inhibitor, the 3rd, the fire-retardant formation of pressure-sensitive adhesive layer of natural rubber based, it comprises employing aminoalkyl group organoalkoxysilane sulfurized natural rubber based elastomeric, inorganic combustion inhibitor for example metal hydroxides and inorganic fire-retarded auxiliary agent.Preferred natural rubber based fire-retardant combination layer 2 dipping (but not being to flood) are gone in the cloth base material 1, with this all surfaces of drape base material 1 preferably, comprise the surface with the cloth base material 1 of the fire-retardant formation of pressure-sensitive adhesive layer 3 relative sides of natural rubber based.In Fig. 2, reference number 4 is other sulfurized natural rubber base fire-retardant combination layers, is used between the fire-retardant varistor layer 3 of natural rubber based fire-retardant combination layer 2 and sulfurized natural rubber base.
In a preferred embodiment of the present invention as illustrated in fig. 1 and 2, be intended to make at natural rubber based fire-retardant combination layer 2, or the flame retardant agent content in the natural rubber based fire-retardant combination layer 4 (if employing) is higher than the flame retardant agent content in the fire-retardant formation of pressure-sensitive adhesive layer 3 of natural rubber based.
In Fig. 3, this fire-retardant pressure-sensitive adhesive tape comprises natural rubber based fire-retardant combination layer 2 and at the fire-retardant formation of pressure-sensitive adhesive layer 3 of the natural rubber based of cloth base material 1 one sides with at the other flame-retardant layer 6, particularly natural rubber based flame-retardant layer of cloth base material opposite side.Other flame-retardant layer 6 preferably comprises employing aminoalkyl group organoalkoxysilane sulfurized natural rubber based elastomeric, tackifier resins and inorganic combustion inhibitor be metal hydroxides and inorganic fire-retarded auxiliary agent for example, but without limits to it, it can be any, as long as it can provide flame retardant properties to the surface that base material exposes.
At the rubber-based elastomerics that is used for natural rubber based fire-retardant combination layer and the fire-retardant formation of pressure-sensitive adhesive layer of sulfurized natural rubber base, the natural rubber component is preferably occupied at least 50 weight % or more, more preferably 60 weight % or more, or even 100 weight %.Except natural rubber, as elastomerics, synthetic rubber for example isoprene-isobutylene rubber, synthetic polyisoprene, divinyl rubber and acrylic rubber can be individually or is used as two or more the mixture in them.The preferred rubber components that contains halogen of getting rid of fully.If the natural rubber component is lower than 50%, not enough by the cross-linking density after the sulfuration of employing aminoalkyl group organoalkoxysilane, and this will cause being difficult to have the sufficiently high viscosity of holding when heating.The advantage of natural rubber is: it does not discharge the halogen gas etc. that environment is had harmful effect when burning.
In the present invention, the aminoalkyl group organoalkoxysilane is as the elastomeric vulcanizing agent of natural rubber based, therefore different with the sulphur based vulcanization agent of routine, when burning, do not produce sulphurous acid gas, an advantage of the present invention is exactly to use for example sulphur of deleterious vulcanizing agent basically.
The aminoalkyl group organoalkoxysilane is not only as the elastomeric vulcanizing agent of natural rubber based, and has as the coupling agent of inorganic combustion inhibitor with as the function of the coupling agent of cloth base material or adherend.
Preferred aminoalkyl group organoalkoxysilane is: N-β (aminoethyl) gamma-amino propyl group methyl dimethoxysilane, N-β (aminoethyl) gamma-amino propyl group methyldiethoxysilane, N-β (aminoethyl) gamma-amino propyl trimethoxy silicane, N-β (aminoethyl) γ-An Jibingjisanyiyangjiguiwan, gamma-amino propyl trimethoxy silicane and γ-An Jibingjisanyiyangjiguiwan.It has following structural formula:
H
2N-C
2H
4-NH-C
3H
6-SiCH
3(OCH
3)
2
H
2N-C
2H
4-NH-C
3H
6-SiCH
3(OC
2H
5)
2
H
2N-C
2H
4-NH-C
3H
6-Si(OCH
3)
3
H
2N-C
2H
4-NH-C
3H
6-Si(OC
2H
5)
3
H
2N-C
3H
6-Si(OCH
3)
3
H
2N-C
3H
6-Si(OC
2H
5)
3
The add-on of aminoalkyl group organoalkoxysilane is preferably 0.1-10 weight part/100 weight part natural rubber based elastomerics.If add-on is lower than 0.1 weight part, sulfuration is carried out not exclusively, the result, that on base material, form or to be impregnated into the film toughness of sulfurized natural rubber based composition and use thereof in packaging in the base material or fire-retardant formation of pressure-sensitive adhesive layer enough high, contact bonding for base material is poor, with because complete cure not, it is not enough to hold viscosity when heating.
The consumption of aminoalkyl group organoalkoxysilane is usually greater than the sulfuration dosage that uses in corresponding prior art compositions in the present invention.
If the add-on of aminoalkyl group organoalkoxysilane surpasses 10 weight parts, aspect natural rubber based fire-retardant combination layer, the problem that occurs is: the film after the sulfuration becomes too hard so that loses the feel of cloth, aspect the fire-retardant formation of pressure-sensitive adhesive layer of sulfurized natural rubber base, the problem that occurs is: because overvulcanize, under normal state or As time goes on, adhesion strength descends.
Fire retardant preferably comprises metal hydroxides and inorganic fire-retarded auxiliary agent, but to it without limits, for example, according to other factors, the composition of the kind of base material and fire-retardant combination layer and fire-retardant formation of pressure-sensitive adhesive layer for example can only use a kind of in metal hydroxides and the inorganic fire-retarded auxiliary agent.
The fire retardant consumption is preferably from greater than 150 to 800 weight parts, more preferably the natural rubber based elastomeric in 300 to 800 weight parts/100 weight part adhesive tapes.
The blending of metal hydroxides and inorganic fire-retarded auxiliary agent (fashionable when adding) is compared preferably: flame retardant 10-50 weight part/100 parts by weight of metal hydroxide.If flame retardant is lower than 10 weight parts, the fire retardation of metal hydroxides descends, and if it surpasses 50 weight parts, can not bring into play the effect that adds flame retardant.
The fire retardant consumption that adds the mixture that comprises metal hydroxides and flame retardant in the natural rubber based elastomeric is greater than 150 to 800 weight parts/100 weight part natural rubber based elastomerics suitably.If the fire retardant add-on is not more than 150 weight parts, be difficult to reach flame-retardant standard based on the UL-510FR combustion test, if and it surpasses 800 weight parts, the viscosity of natural rubber based fire-retardant combination layer and the fire-retardant pressure sensitive adhesives layer of sulfurized natural rubber base can suddenly increase, so not only these adulterants almost can not apply, even apply, also can go wrong one makes and may reduce the contact of cloth bonding, or pressure-sensitive adhesive is easy to produce the inefficacy on the interface.
The fire-retardant formation of pressure-sensitive adhesive layer of sulfurized natural rubber base may contain tackifier resins.The tackifier resins consumption is 10 to 200 suitably, preferred 40 to 150 weight parts/100 weight part natural rubber based elastomerics.If the tackifier resins add-on is lower than 10 weight parts, pressure-sensitive-adhesive and viscosity are uneven and lose viscosity, and if it surpasses 200 weight parts, its viscosity as pressure-sensitive adhesive is not enough, and can not bring into play satisfied binding property.
Natural rubber based fire-retardant combination layer may contain tackifier resins.The tackifier resins consumption is preferably 10 to 200 weight parts, more preferably 40 to 150 weight parts/100 weight part natural rubber based elastomerics.If the tackifier resins add-on is lower than 10 weight parts, the viscosity that then applies and be impregnated into the layer on the cloth is too little, possibly can't make the unwinding of pressure-sensitive adhesive adhesive tape.And it surpasses 200 weight parts, and natural rubber based fire-retardant combination layer becomes fragile and can not keep sufficiently high film toughness.
In a preferred embodiment of the invention, the elastomeric ratio of tackifier resins and natural rubber based is higher than tackifier resins and the elastomeric ratio of natural rubber based in formation of pressure-sensitive adhesive layer in the fire-retardant combination layer.If these ratios are conversely, then when aging because tackifier resins from formation of pressure-sensitive adhesive layer fire-retardant combination layer migration to the inside, depends on the composition of formation of pressure-sensitive adhesive layer simultaneously, the pressure sensitive adhesion performance that is coated in the formation of pressure-sensitive adhesive layer in the outside may descend.In the said structure of adhesive tape, though with formation of pressure-sensitive adhesive layer that adherend contacts in a large amount of inorganic combustion inhibitor of fusion, the also unlikely deterioration of the performance of pressure-sensitive adhesive.
The fire-retardant combination layer can be formed by two or more layers.For example, through regulating, the fire-retardant combination layer that contacts with the cloth base material can have suitable composition to obtain flame retardant resistance simultaneously and to the tackiness of cloth base material.The fire-retardant combination layer that another contacts with formation of pressure-sensitive adhesive layer can have suitable composition in less consideration cloth base material adhering obtained maximum flame retardant effect simultaneously through regulating.
As the metal hydroxides that in fire-retardant pressure-sensitive adhesive tape of the present invention, uses, preferred aluminium hydroxide and magnesium hydroxide, and they can use individually or in combination.
The flame retardant that uses in fire-retardant pressure-sensitive adhesive tape of the present invention does not preferably produce halogen gas and is odorless when burning, though be not specially limited, the preferred use is selected from least a in stannic oxide, zinc metastannate, zinc hydroxyl stannate and the zinc borate.
In natural rubber based fire-retardant combination layer and the fire-retardant formation of pressure-sensitive adhesive layer of sulfurized natural rubber base, preferably add mineral filler, contain the antioxidant and the oil of UV light absorber, regulate film toughness and pressure-sensitive adhesive performance with this.
When natural rubber-based fire-retardant combination layer applied or is impregnated into cloth base material (particularly inflammable cloth) and sticks on the cloth base material, its consumption was 3-250g/m suitably
2If the consumption of this layer is lower than 3g/m
2, be not easy advantageously to obtain to satisfy the flame retardant level of UL510FR combustion test standard, and if it surpasses 250g/m
2, base material will lose snappiness unfriendly.
The amount of the fire-retardant formation of pressure-sensitive adhesive layer of sulfurized natural rubber base is preferably 20-600g/m
2, more preferably 20-250g/m
2If this coating amount is lower than 20g/m
2, be difficult to the adhesion property of acquisition, and if it surpasses 600g/m for the pressure-sensitive adhesive of complicated shape thing
2, the appearance defect of then causing pressure-sensitive adhesive tape is for example oozed out and the cost rising, is unpractical therefore.
The cloth base material that uses in fire-retardant pressure-sensitive adhesive tape of the present invention is not special restriction, and can need not to be for example cotton of inflammable cloth, can be by the fire retardant material cloth made of polyimide resin or glass for example yet.Yet inflammable cloth is favourable, because it has fabulous snappiness and cheap.
The inflammable cloth that is preferred for fire-retardant pressure-sensitive adhesive tape of the present invention can be that its warp thread and weft yarn can have the fineness degree of 38-300 DENIER by single thread singly knit or the interlacing fabric that is woven into of staple fibre, cotton yarn, trevira, polyethylene fibre, polypropylene fibre and acrylic fibre or their union yarn for example.If fineness degree is lower than 38 DENIER, then this cloth is too thick can not be as the base material of pressure-sensitive adhesive tape, and too big on snappiness and resin absolute magnitude, and this is disadvantageous, and if it surpasses 300 DENIER, the then insufficient strength of cloth.
Density at cloth aspect warp thread and the weft yarn two is 25-450 root yarn/inch suitably.If density is lower than 25 yarn/inches, substrate intensity is not enough, and if it surpasses 450 yarn/inches, adherent fire-retardant combination amount is too big in fire-retardant finish, and base material becomes too high aspect nerve, has lost its special feel.
A kind of fire-retardant Pressure Sensitive Tape (wherein having applied the fire-retardant pressure-sensitive adhesive of sulfurized natural rubber base on base material) that has base material can be with for example following method preparation.Be dissolved in the solvent of toluene for example to possess suitable plasticity-through the natural rubber of mastication and other synthetic rubber.To wherein adding the mixing fire retardant that inorganic combustion inhibitor for example is made up of metal hydroxides and flame retardant, tackifier resins, mineral filler and oxidation inhibitor, and make its dispersion.Add aminoalkyl group organoalkoxysilane and stirring with preparation natural rubber based fire-retardant combination thereafter.With equipment such as reverse coating machines with predetermined amount with this composition coating and be impregnated in the above-mentioned inflammable cloth with this and prepare cloth base material through fire-retardant finish.Use roll coater to be coated on this base material and drying, finish vulcanization reaction thus with the fire-retardant pressure-sensitive adhesive agent solution of natural rubber based of the method preparation identical with above-mentioned natural rubber based fire-retardant combination.After this, only make its coiling, just can obtain pressure-sensitive adhesive tape of the present invention.
The heat generating components that fire-retardant pressure-sensitive adhesive tape of the present invention is specially adapted to fixing big electric current is TV part for example, wherein may rise by big electric current and temperature, and it is important therefore having flame retardant properties.
Pressure-sensitive adhesive tape provided by the invention comprises the cloth base material and passes through to adopt aminoalkyl group organoalkoxysilane sulfurized natural rubber based elastomeric, and the described natural rubber based elastomeric that will obtain and for example above-mentioned metal hydroxide combustion inhibitor of inorganic combustion inhibitor and tackifier resins fusion, the fire-retardant formation of pressure-sensitive adhesive layer of thus obtained sulfurized natural rubber base.Preferably with this cloth base material with fusion wherein the natural rubber based fire-retardant combination dipping of metal hydroxides based flameproofing and aminoalkyl group organoalkoxysilane.Pressure-sensitive adhesive tape of the present invention preferably uses metal hydroxides based flameproofing and aminoalkyl group organoalkoxysilane, and they are safe to human body and environment do not had harmful effect.Therefore, it can use low-yield sulfuration, is not subjected to the restraining effect of oxygen, and the metal that neither corrodes as adherend does not make paper, cloth or plastics variable color yet, and it is an odorless.And the advantage of pressure-sensitive adhesive tape of the present invention is: when burning, it does not discharge halogen gas, sulphurous acid gas or the nitrogen oxide that environment is had harmful effect.
Embodiment
By reference embodiment, below illustrate in greater detail the present invention, yet, the invention is not restricted to these embodiment.In an embodiment, " part " is that weight part and " % " are weight percentage.
(1) preparation of natural rubber based fire-retardant combination solution:
For the rubber-based composition that applies and be impregnated in the inflammable cloth, by in 1200 parts of toluene the dissolving 100 weight parts be adjusted to natural rubber and 35 parts of rubber elastomers that styrene-butadiene rubber(SBR) is formed of 76 by 65 parts of plasticity-, 350 parts of magnesium hydroxide (FINEMAG SN-T, make by Air water), 50 parts of zinc (FLAMTARD H, by Nippon Light Metal Co., Ltd makes), 5 parts of aminoalkyl group organoalkoxysilanes, (ESCOREZ 1304 for 120 parts of tackifier resins, make by Exxon Chemicals) and 1 part of antioxidant (NS-6 is made by Ouchi ShinkoChemical industrial) prepare 34% natural rubber based fire-retardant combination solution.
(2) preparation of the fire-retardant pressure-sensitive adhesive agent solution of rubber-based:
For the fire-retardant pressure-sensitive adhesive of rubber-based, be adjusted to rubber elastomer that 35 natural rubber and 30 parts of styrene-butadiene rubber(SBR) forms, 150 parts of magnesium hydroxides, 50 parts of zinc, 1 part of aminoalkyl group organoalkoxysilane, 70 parts of tackifier resins (ESCOREZ 1304, made by Exxon Chemicals), 10 parts of titanium dioxide and 1 part of antioxidant (NS-6) by 100 parts of dissolvings in 382 parts of toluene by 70 parts of plasticity-and prepare 50% the fire-retardant pressure-sensitive adhesive agent solution of rubber-based.
Embodiment 1
Have the preparation of the pressure-sensitive adhesive tape of sulfurized natural rubber base fire retardant base material:
Adhesive band base is by the weft yarn of the warp thread with 180 yarns/inch density, 75 DENIER and 53 yarn/inch density, 150 DENIER, form through the inflammable acetate fibre cloth of scrubbing, use the rubber-based flame retardant solution coating that reverse kiss coater will prepare and be immersed on this base material and enter this base material in above step (1), making dried coating amount is 15.5g/m
2, then 80 ℃ of dryings 1 minute, thereafter with the adhesive tape rolling-in.
Prepare fire-retardant combination by the pressure-sensitive adhesive that uses preparation in above step (2), wherein in their fusion step, magnesium hydroxide is increased to 400 parts from 150 parts, zinc increases to 175 parts from 50 parts, the aminoalkyl group organoalkoxysilane increases to 7 parts from 1 part, and tackifier resins (ESCOREZ 1304) increases to 120 parts from 70 parts.With 50% toluene solution of above-mentioned fire-retardant combination solution be coated in by above preparation on the acetate fibre cloth tape base material of fire-retardant finish, making dried coating amount is 150g/m
2, dry then.
Subsequently, being coated in the above step (2) 50% fire-retardant pressure-sensitive adhesive agent solution of preparation, to make dried coating amount be 50g/m
2, dry then, acquisition has the pressure-sensitive adhesive tape of vulcanized rubber base fire retardant base material.
This scroll is cut into 12 mm wides, the measurement of carry out thickness, tensile strength, elongation then, peel off viscosity, peel off after the heating viscosity, unwinding power, viscosity, holding viscosity, galvanic etching coefficient and breakdown voltage is also carried out combustion test and odor test to it.
Evaluation result is gratifying on all items of pressure-sensitive adhesive performance, electrical properties, flame retardant resistance and stink.
The result can see Table 1.Thus the result as can be seen, it is good especially to peel off viscosity and viscosity.
Have the preparation of the pressure-sensitive adhesive tape of sulfurized natural rubber base fire retardant base material:
Adhesive band base by with embodiment 1 in the identical acetate fibre cloth that uses forms, but this cloth without scrubbing, the solution that will prepare in above step (1) applies and is immersed on the base material and enters that to make dried coating amount in the base material be 18.5g/m
2, dry then, make the acetate fibre cloth tape base material of fire-retardant finish.
Subsequently, prepare fire-retardant combination by the fire-retardant pressure-sensitive adhesive of rubber-based that uses preparation in above step (2), wherein in their fusion step, magnesium hydroxide changes 400 parts into, zinc changes 200 parts into, and aminosilane changes 7 parts and tackifier resins (ESCOREZ 1304) into and changes 120 parts into.With 50% toluene solution of above-mentioned fire-retardant combination solution be coated in by above preparation on the acetate fibre cloth tape base material of fire-retardant finish, making dried coating amount is 150g/m
2
Being coated in the above step (2) the fire-retardant pressure-sensitive adhesive agent solution of 50% rubber-based of preparation thereon,, to make dried coating amount be 50g/m
2, dry then, obtain to contain vulcanized rubber base fire retardant base material, other fire-retardant combination layer and the pressure-sensitive adhesive tape of fire-retardant formation of pressure-sensitive adhesive layer.
This adhesive tape scroll is cut into 12 mm wides, and to embodiment 1 in identical project evaluate.Its result can see Table 1.The result can find out thus, even when having used the acetate fibre cloth of not scrubbing, has also obtained good result at aspects such as galvanic etching coefficients.
Use with embodiment 2 in use identical do not scrub inflammable acetate fibre cloth base material, the solution that will prepare in above step (1) applies and is immersed on this base material and enters that to make dried coating amount in the base material be 15.5g/m
2, dry then, make the acetate fibre cloth tape base material of fire-retardant finish.
Subsequently, prepare fire-retardant combination by the fire-retardant pressure-sensitive adhesive of rubber-based that uses preparation in above step (2), but, wherein in their fusion step, magnesium hydroxide changes 400 parts into, zinc changes 200 parts into, and the aminoalkyl group organoalkoxysilane changes 7 parts and tackifier resins (ESCOREZ 1304) into and changes 120 parts into.50% toluene solution of above-mentioned fire-retardant combination solution is coated in this on the acetate fibre cloth tape base material of fire-retardant finish, and making dried coating amount is 150g/m
2
Being coated in the above step (2) the fire-retardant pressure-sensitive adhesive agent solution of 50% rubber-based of preparation thereon,, to make dried coating amount be 50g/m
2, dry then, obtain to comprise vulcanized rubber base fire retardant base material, other fire-retardant combination layer and the pressure-sensitive adhesive tape of fire-retardant formation of pressure-sensitive adhesive layer.
This adhesive tape scroll is cut into 12 mm wides, and use with embodiment 1 in identical project evaluate.Its result can see Table 1.The result can find out thus, even when having used the acetate fibre cloth of not scrubbing, has also obtained good result on the galvanic etching coefficient.
Comparative example 1
By with embodiment 1 on the adhesive band base formed of the identical acetate fibre cloth that uses, use roll coater directly to be coated in the fire-retardant pressure-sensitive adhesive agent solution of rubber-based for preparing in the above step (2), making dried coating amount is 200g/m
2,, obtain the 30m rolled products then 80 ℃ of dryings 2 minutes.This scroll is cut into 12 mm wides, and use with embodiment 1 in identical project evaluate.Its result can see Table 1.The result can find out thus, and the evaluation in the UL510FR combustion test is negated to infer that this is attributable to " inflammable cloth exposes " " this fact.
Comparative example 2
Adhesive band base is made up of the inflammable acetate fibre cloth of embodiment 1, to be coated on this base material and be impregnated into this base material by remove rubber-based flame retardant solution that 5 parts of aminoalkyl group organoalkoxysilanes obtain from the adulterant of rubber-based composition of preparation step (1), making dried coating amount be 15.5g/m
2, dry then and this adhesive band base of reeling.
At this on the acetate fibre cloth tape base material of fire-retardant finish, use the roll coater coating by remove the fire-retardant pressure-sensitive adhesive agent solution of rubber-based that 1 part of aminoalkyl group organoalkoxysilane obtains from the adulterant of the fire-retardant pressure sensitive adhesives of rubber-based of preparation step (2), making dried coating amount is 200g/m
2,, obtain 30m scroll product then 80 ℃ of dryings 2 minutes.
This scroll is cut into 12 mm wides, and use with embodiment 1 in identical project evaluate.Its result can see Table 1.The result can find out that to hold viscosity poor thus, and this has proved that employing aminoalkyl group organoalkoxysilane carries out the sulfurized effect.
Comparative example 3
On the adhesive band base of forming by the acetate fibre cloth identical, use the flame-retardant layer that concavo-convex roll-coater coating contains neoprene/ANTIMONY TRIOXIDE SB 203 99.8 PCT to make dried coating amount be 92g/m with embodiment 1
2, dry then.
, use the roll coater coating to contain useful resol sulfurized natural rubber thereon, the pressure-sensitive adhesive of tackifier resins and lime carbonate, making dried coating amount is 58g/m
2, dry then and this adhesive tape of reeling.
To this adhesive tape carry out with embodiment 1 in the evaluation of identical items.Its result can see Table 1.The result can find out thus, although flame retardant resistance is outstanding, its stink is very disagreeable, and this has exposed the shortcoming of using halogen-based flame retardants.
Table 1
| Project | Embodiment | Comparative example | ||||
| 1 | 2 | 3 | 1 | 2 | 3 | |
| Adhesive tape rigidity (g/cm) 1) | 22.9 | 23.5 | 22.4 | 21.8 | 22.5 | 22.5 |
| Be impregnated into the amount (g/m in the cloth base material 2) | 15.5 | 18.5 | 15.5 | 0 | 15.5 | 0 |
| Amount (the g/m of the pressure-sensitive adhesive of coating 2) | 200 | 200 | 200 | 200 | 200 | 147 |
| Thickness (millimeter) | 0.23 | 0.24 | 0.25 | 0.22 | 0.24 | 0.26 |
| Tensile strength (Kg/12mm) 2) | 7.9 | 8.3 | 8.1 | 7.4 | 7.9 | 7.9 |
| Elongation (%) 3) | 25.1 | 23.8 | 24.3 | 26.3 | 24.5 | 24.2 |
| Peel off viscosity (N/12mm) 4) | 6.0 | 6.1 | 5.2 | 5.8 | 7.4 | 3.1 |
| Peel off viscosity (N/12mm) after the heating 5) | 13.8 | 16.1 | 12.1 | 13.2 | 10.2 | 8.8 |
| Unwinding power (N/12mm) 6) | 2.4 | 2.4 | 2.8 | 3.4 | 3.6 | 6.8 |
| Viscosity 7) | 8 | 8 | 11 | 7 | 7 | 15 |
| Hold viscosity (slippage: mm) 8) | 0.3 | 0.1 | 0.3 | 0.7 | Fell in 3 minutes | 1.3 |
| The galvanic etching coefficient 9) | 1.0 | 0.92 | 0.98 | 0.43 | 0.90 | 0.85 |
| Breakdown voltage (kilovolt) 10) | 3.0 | 3.2 | 3.5 | 2.4 | 2.1 | 2.0 |
| UL510FR combustion test (the longest time) result of determination | 34 seconds qualified | 43 seconds qualified | 27 seconds qualified | 1 minute 5 seconds defective | 52 seconds qualified | 10 seconds qualified |
| Smell 12) | 160 | 170 | 170 | 165 | 179 | 750 |
| Oxygen index 13) | 22.8 | 23.2 | 24.2 | 21.8 | 24.0 | 28.2 |
Test method
1) rigidity: use the bone test machine to measure (36 millimeters (wide) 15 ° of (angle) 10 grams)
2) tensile strength: JIS C-2107-1999
3) elongation: JIS C-2107-1999
4) peel off viscosity: JIS C-2107-1999
5) peel off viscosity: JIS C-2107-1999 (120 ℃ of x2H) after the heating
6) unwinding power: JIS Z-0237-2000
7) viscosity: JIS Z-0237-2000 (angle: 10 °)
8) hold viscosity: JIS C-2107-1999 (120 ℃ of x30 minute 12mm * 25mm100 grams)
9) galvanic etching coefficient: JIS C-2107-1999
10) breakdown voltage: JIS C-2107-1999
11) UL510FR combustion test: in repeating 5 times combustion test, each extinction time is 60 seconds or still less for qualified.
12) smell: use smell sensor to measure (the normally transmitter of making by Shin Cosmos Denki)
13) oxygen index: JIS K-7201-1972
As indicated above, the structure use is favourable by the fire-retardant pressure-sensitive adhesive tape of aminoalkyl group organoalkoxysilane sulfurized natural rubber and metal hydroxides based flameproofing according to the present invention, and needless to say electrical insulation properties and snappiness, it is that more it does not make metal adherend or for example cloth and the flavescence of paper adherend, and can not emit halogen gas or sulphurous acid gas when burning.
Embodiment 4
Have the preparation of the pressure-sensitive adhesive tape of sulfurized natural rubber base fire retardant base material:
Adhesive band base is by the weft yarn of the warp thread with 180 yarns/inch density, 75 DENIER and 53 yarn/inch density, 150 DENIER, form through the inflammable acetate fibre cloth of scrubbing, use the rubber-based flame retardant solution coating that reverse kiss coater will prepare and be immersed on this base material and enter this base material in above step (1), making dried coating amount is 15.5g/m
2, then 80 ℃ of dryings 1 minute with thereafter adhesive band base is being reeled.
On this adhesive band base of forming by the acetate fibre cloth of fire-retardant finish, use roll coater to be coated in the fire-retardant pressure-sensitive adhesive agent solution of rubber-based of preparation in the above step (2), making dried coating amount is 200g/m
2,, obtain 30m scroll product then 80 ℃ of dryings 2 minutes.This scroll is cut into 12 mm wides, the measurement of carry out thickness, tensile strength, elongation then, peel off viscosity, peel off after the heating viscosity, unwinding power, viscosity, holding viscosity, galvanic etching coefficient and breakdown voltage is also carried out combustion test and odor test to it.Evaluation result is gratifying on all items of pressure-sensitive adhesive performance, electrical properties, flame retardant resistance and stink.
Embodiment 5
Have the preparation of the pressure-sensitive adhesive tape of sulfurized natural rubber base fire retardant base material:
Adhesive band base by with embodiment 4 in the identical inflammable acetate fibre cloth that uses forms, but this cloth without scrubbing, the solution that will prepare in above step (1) applies and is immersed on the base material and enters in the base material, making dried coating amount is 18.5g/m
2, dry then, make the adhesive band base of forming by the acetate fibre cloth of fire-retardant finish.Subsequently, use roll coater to be coated in the fire-retardant pressure-sensitive adhesive agent solution of rubber-based of preparation in the above step (2), making dried coating amount is 200g/m
2,, obtain 30m scroll product then 80 ℃ of dryings 2 minutes.This scroll is cut into 12 mm wides, and use with embodiment 1 in identical project evaluate.Equally, when using the acetate fibre cloth of not scrubbing, also obtained good result at aspects such as galvanic etching coefficients.
Claims (20)
1. fire-retardant pressure-sensitive adhesive tape, comprise the cloth base material and at least one main lip-deep fire-retardant formation of pressure-sensitive adhesive layer of described cloth base material, described fire-retardant formation of pressure-sensitive adhesive layer contains the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, with in the described natural rubber based elastomeric of 100 weight parts, 0.1-10 the aminoalkyl group organoalkoxysilane as vulcanizing agent of weight part, the inorganic combustion inhibitor of the tackifier resins of 10-200 weight part and 150-800 weight part, described natural rubber elastomer adopts described aminoalkyl group organoalkoxysilane sulfuration, and described adhesive tape satisfies the flame-retardant standard of UL510FR.
2. the fire-retardant pressure-sensitive adhesive tape in the claim 1, wherein said fire-retardant pressure-sensitive adhesive tape further is included in the fire-retardant combination layer that has on the base material on described fire-retardant formation of pressure-sensitive adhesive layer one side, described fire-retardant combination layer contains the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, with in the described natural rubber based elastomeric of 100 weight parts, 0.1-10 the aminoalkyl group organoalkoxysilane as vulcanizing agent of weight part, the inorganic combustion inhibitor of the tackifier resins of 10-200 weight part and 150-800 weight part, described natural rubber based elastomeric adopts described aminoalkyl group organoalkoxysilane sulfuration, the content of the described inorganic combustion inhibitor in described fire-retardant combination layer is greater than the content of the described inorganic combustion inhibitor in described fire-retardant formation of pressure-sensitive adhesive layer, and described adhesive tape satisfies the flame-retardant standard of UL510FR.
3. the fire-retardant pressure-sensitive adhesive tape of claim 1, wherein said cloth base material is by described fire-retardant formation of pressure-sensitive adhesive layer dipping, and described thus cloth base material is embedded in the fire-retardant formation of pressure-sensitive adhesive layer of described dipping.
4. the fire-retardant pressure-sensitive adhesive tape of claim 2, wherein said cloth base material is flooded by described fire-retardant combination layer, and described thus cloth base material is embedded in the fire-retardant combination layer of described dipping or is embedded in described fire-retardant combination layer and the described fire-retardant formation of pressure-sensitive adhesive layer.
5. claim 1 or 2 fire-retardant pressure-sensitive adhesive tape, wherein said cloth base material has second surface on the another side relative with described fire-retardant formation of pressure-sensitive adhesive layer, and has applied another fire-retardant combination layer on the second surface of described cloth base material.
6. claim 1 or 2 fire-retardant pressure-sensitive adhesive tape, wherein said inorganic combustion inhibitor contains metal hydroxides and inorganic fire-retarded auxiliary agent.
7. the fire-retardant pressure-sensitive adhesive tape of claim 2, wherein in the tackifier resins described in the described fire-retardant combination layer and the elastomeric weight ratio of described natural rubber based greater than this weight ratio in the described fire-retardant formation of pressure-sensitive adhesive layer.
8. claim 1 or 2 fire-retardant pressure-sensitive adhesive tape, wherein said base material is inflammable cloth.
9. the fire-retardant pressure-sensitive adhesive tape of claim 2, wherein said fire-retardant combination layer is to be formed by two or more fire-retardant combination layers, and with fire-retardant combination layer that described fire-retardant formation of pressure-sensitive adhesive layer contacts in the tackifier resins that contains and the elastomeric blending of natural rubber based than greater than the elastomeric blending ratio of tackifier resins that in described fire-retardant formation of pressure-sensitive adhesive layer, contains and natural rubber based.
10. claim 1 or 2 fire-retardant pressure-sensitive adhesive tape, wherein said inorganic combustion inhibitor contains aluminium hydroxide and/or magnesium hydroxide.
11. containing, the fire-retardant pressure-sensitive adhesive tape of claim 1 or 2, wherein said inorganic combustion inhibitor be selected from least a in the following material: stannic oxide, zinc metastannate, zinc hydroxyl stannate and zinc borate.
12. the fire-retardant pressure-sensitive adhesive tape of claim 1 or 2, wherein said aminoalkyl group organoalkoxysilane is selected from: N-β (aminoethyl) gamma-amino propyl group methyl dimethoxysilane, N-β (aminoethyl) gamma-amino propyl group methyldiethoxysilane, N-β (aminoethyl) gamma-amino propyl trimethoxy silicane, N-β (aminoethyl) γ-An Jibingjisanyiyangjiguiwan, gamma-amino propyl trimethoxy silicane and γ-An Jibingjisanyiyangjiguiwan.
13. the fire-retardant pressure-sensitive adhesive tape of claim 1 or 2, wherein said fire-retardant formation of pressure-sensitive adhesive layer and/or described fire-retardant combination layer further comprise at least a component that is selected from mineral filler, UV light absorber, antioxidant and oil.
14. the fire-retardant pressure-sensitive adhesive tape of claim 2, the consumption of wherein said fire-retardant combination layer are 3-250g/m
2
15. the fire-retardant pressure-sensitive adhesive tape of claim 1 or 2, the consumption of wherein said fire-retardant formation of pressure-sensitive adhesive layer are 20-600g/m
2
16. the fire-retardant pressure-sensitive adhesive tape of claim 1 or 2, wherein said cloth base material is by single thread or comprises the single fabric or the MIXED FABRIC of the union yarn braiding that is selected from staple fibre, cotton yarn, trevira, polyethylene fibre, polypropylene fibre and acrylic fibre, with fineness degree be the 38-300 DENIER, the density of fabric all is being 25-450 root yarn/inch aspect warp thread and the weft yarn two.
17. the fire-retardant pressure-sensitive adhesive tape of claim 1 or 2, wherein said fire-retardant formation of pressure-sensitive adhesive layer and/or described fire-retardant combination layer are substantially devoid of sulphur and halogen.
18. a fire-retardant pressure-sensitive adhesive tape is included in the cloth base material that has fire-retardant combination layer and fire-retardant formation of pressure-sensitive adhesive layer on its at least one main surface successively; Described cloth base material is by described fire-retardant combination layer dipping and coating; Described fire-retardant combination layer contains the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, the aminoalkyl group organoalkoxysilane, tackifier resins and the fire retardant of forming by metal hydroxides and inorganic fire-retarded auxiliary agent, described natural rubber based elastomeric vulcanizes with the aminoalkyl group organoalkoxysilane, and the mix proportions of described aminoalkyl group organoalkoxysilane is 0.1-10 weight part/100 weight part natural rubber based elastomerics; Described fire-retardant formation of pressure-sensitive adhesive layer contains the natural rubber based elastomeric of being made up of at least 50 weight % natural rubber components, the aminoalkyl group organoalkoxysilane, tackifier resins and the fire retardant of forming by metal hydroxides and inorganic fire-retarded auxiliary agent, described natural rubber based elastomeric is that the mix proportions of described aminoalkyl group organoalkoxysilane is 0.1-10 weight part/100 weight part natural rubber based elastomerics with the sulfuration of aminoalkyl group organoalkoxysilane; And described adhesive tape satisfies the flame-retardant standard of UL510FR.
19. the fire-retardant pressure-sensitive adhesive tape of claim 18, wherein in the layer of each in described fire-retardant combination layer and/or described fire-retardant formation of pressure-sensitive adhesive layer, the ratio of described inorganic fire-retarded auxiliary agent and described metal hydroxides blend is the inorganic fire-retarded auxiliary agent of 10-50 weight part/100 parts by weight of metal hydroxide, and the total amount of described metal hydroxides and described inorganic fire-retarded auxiliary agent is that described fire-retardant pressure-sensitive adhesive tape is substantially devoid of sulphur greater than the natural rubber based elastomeric of 150 to 800 weight parts/100 weight parts in described layer or composition, antimony, plumbous, arsenic, phosphorus and halogen.
20. the purposes of the fire-retardant pressure-sensitive adhesive tape of any one in the claim 1 to 19, it is used for TV part or deflector coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03101420 CN1285692C (en) | 2003-01-10 | 2003-01-10 | Fire resistant pressure-sensitive adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03101420 CN1285692C (en) | 2003-01-10 | 2003-01-10 | Fire resistant pressure-sensitive adhesive tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1515642A CN1515642A (en) | 2004-07-28 |
| CN1285692C true CN1285692C (en) | 2006-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03101420 Expired - Fee Related CN1285692C (en) | 2003-01-10 | 2003-01-10 | Fire resistant pressure-sensitive adhesive tape |
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| Country | Link |
|---|---|
| CN (1) | CN1285692C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201817748U (en) * | 2010-09-21 | 2011-05-04 | 朱向忠 | Flame-retardant trademark paper |
| CN105040230A (en) * | 2015-02-13 | 2015-11-11 | 张朝龙 | Novel terylene acetic acid single/double-face hand-tearing printing mark band and making method thereof |
| WO2017038010A1 (en) * | 2015-08-31 | 2017-03-09 | パナソニックＩｐマネジメント株式会社 | Nonaqueous electrolytic secondary battery |
| CN107573861A (en) * | 2017-08-17 | 2018-01-12 | 苏州市新广益电子有限公司 | Novel flame-retardant adhesive tape |
| CN113913119A (en) * | 2021-09-10 | 2022-01-11 | 南京卓煌工业技术有限公司 | Flame-retardant-grade anti-corrosion adhesive tape |
-
2003
- 2003-01-10 CN CN 03101420 patent/CN1285692C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1515642A (en) | 2004-07-28 |
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