CN103694922A - Halogen-free flame-retardant hot melt adhesive membrane applied to electronics industry and preparation method of membrane - Google Patents
Halogen-free flame-retardant hot melt adhesive membrane applied to electronics industry and preparation method of membrane Download PDFInfo
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- CN103694922A CN103694922A CN201310672740.5A CN201310672740A CN103694922A CN 103694922 A CN103694922 A CN 103694922A CN 201310672740 A CN201310672740 A CN 201310672740A CN 103694922 A CN103694922 A CN 103694922A
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Abstract
The invention relates to an environment-friendly halogen-free flame-retardant hot melt adhesive membrane applied to electronics industry and a preparation method of the membrane. The environment-friendly halogen-free flame-retardant hot melt adhesive membrane consists of the following materials in parts by weight: 20-50 parts of polyester hot melt adhesive, 15-30 parts of a nitrogen-phosphor compound flame retardant, 20-45 parts of melamine cyanurate and 5-20 parts of TPP (Triphenyl Phosphate), wherein a main component of the nitrogen-phosphor compound flame retardant is ammonium polyphosphate which is added with nitrogen-series synergist. The halogen-free flame-retardant hot melt adhesive membrane applied to electronics industry is non-toxic, does not generate thick smoke during combustion, and satisfies environment-friendly requirements.
Description
Technical field
The present invention relates to a kind of hot melt adhesive film, relate in particular to a kind of halogen-free flame-retardant hot-melt adhesive film that is applied to electron trade and preparation method thereof.
Background technology
After invention electricity; electron trade develops rapidly; increasing electronic product has ubiquity in the use of the modern life; once these electronic product presence of fire; can discharge volume poisonous gas and flue dust; in order to reduce fire hazard; some advanced industrial countries require to reach UL94V-0 to the accessory of electronic product; some accurate gadgets damage for preventing being given a shock; conventionally can be coated foam by conductive fabric and reduce vibrations; conductive fabric is widely used in these electrical fittings, therefore the use of conductive fabric is had to fire-retardant requirement.Conductive fabric itself is not fire-retardant, need to reach by the fire retardant hot-melt film adhesive in user being combined with each other fire-retardant requirement.Fire retardant hot-melt film adhesive in user used contained halogen flame in the past, though its flame retardant resistance is good, but shortcoming is when burning, to generate hydrogenchloride (HCL), hydrogen bromide (HBr) and other poisonous organic halogen compounds of strong toxicity, the health of human body is had to certain hazardness, and the non-halogen cry of fire retardant is more and more higher.Although the environmental-friendly halogen-free flame-retardant hot-melt adhesive film that ZL200810021818.6 announces has good flame retardant properties, but the inorganic polymer red phosphorus containing in its system also has certain disadvantages, for example in air, easily absorb moisture, and contact and can emit toxicity PH with air for a long time
3gas, cannot store for a long time; Dispersed poor, make hot melt adhesive film viscosity increase, the production in workshop is had a certain impact; Therefore its color and luster is also worried by some manufacturers, makes the sale of product have certain limitation, how to overcome these shortcomings and remains one of important subject of flame retardant area in recent years.
Summary of the invention
Content of the present invention is to overcome with above-mentioned deficiency, provide a kind of non-hygroscopic, nontoxic, when burning do not produce thick smoke is applied to halogen-free flame-retardant hot-melt adhesive film of electron trade and preparation method thereof.It is compounded in conductive fabric surface, and film thickness can reach the fire-retardant requirement of UL94V-0 level at 0.10mm, makes conductive fabric flexibility good, and there will not be water suction to become wet phenomenon, is beneficial to the use of conductive fabric, and foam is had to good cohesiveness.
The object of the present invention is achieved like this: a kind of halogen-free flame-retardant hot-melt adhesive film that is applied to electron trade, and it is that the main raw material by following weight part forms:
20～50 parts of polyester hot-melt adhesives
15～30 parts of nitrogen phosphorus composite flame-retardant agents
20～45 parts of melamine cyanurates
3～20 parts of TPP (triphenylphosphate).
Described nitrogen phosphorus composite flame-retardant agent main component is ammonium polyphosphate (APP), and being added with nitrogen is synergist.
The present invention is for the halogen-free flameproof glued membrane of electron trade, and in raw material, polyester hot-melt adhesive plays melted by heat bonding effect therein, has higher softening temperature and good cementability;
What the present invention mainly adopted for the halogen-free flameproof glued membrane of electron trade is with condensed phase fire retardant mechanism performance fire retardation, the fire-retardant fire retardation that delays or interrupts burning in condensed phase that refers to of condensed phase, and importantly charcoal forming machine is managed.The formation of foamed char produces by following interaction: be under low temperature, by acid source, being produced can esterification polyol and can be as the acid of dewatering agent, at the sour temperature of a little higher than release, acid is carried out esterification with polyvalent alcohol (carbon source), amine in system is as the catalyzer of this esterification, accelerated reaction is carried out, system melts before esterification or in esterification process, the water vapour producing in reaction process and the not so property gas being produced by source of the gas make expanded foamed in the system of molten state, once simultaneously, polyvalent alcohol and ester dehydration carbonization, form inorganics and charcoal resistates, and system is further expanded foamed, when reaction has approached, system gel and curing, finally form how empty Carbon foam layer.This charcoal layer is contacting of trap heat transmission and combustiblematerials and air effectively, can suppress the generation of smog simultaneously, thereby rise fire-retardantly, presses down cigarette effect
APP in nitrogen phosphorus composite flame-retardant agent is acid source, and main ignition-proof element system is contained in acid source, so acid source is often called as fire retardant.Nitrogen phosphorus composite flame-retardant agent also produces the fire-retardant mechanism of gas phase in fire retardant decomposition course, and this nitrogen-phosphorus-carbon system waste heat may produce NO and NH
3, and the NO of minute quantity and NH
3also can make the free radical chemical combination that burning relies carries out and cause chain reaction to be interrupted, thereby stop proceeding of burning.
Melamine cyanurate serves as the effect of source of the gas in flame-retardant hot-melt adhesive film system, can be used as the catalyzer of esterification simultaneously, and accelerated reaction is carried out.Its nontoxic odorless, tasteless, decomposition temperature high (300 ℃ are very stable below, 600 ℃ above decompose), good flame retardation effect not only, and also it is little to add man-hour smog, and good with macromolecular material consistency, without surface transport phenomenon.The NH producing when melamine cyanurate is heated
3, N
2, water vapor non-flammable gases makes the foaming of the system in molten state, has the feature of nontoxic low cigarette in combustion processes, there is no melts drippage.
TPP (triphenylphosphate) is white, needle-shaped crystals, it is flame-retardant plasticizer, chemical property is more steady, non-volatility, polyester hot-melt adhesive is had to good plasticity, reinforced polyester hot melt adhesive and nitrogen phosphorus composite flame-retardant agent and melamine cyanurate consistency, mobility and the film-forming properties of raising component.
Be applied to a preparation method for the halogen-free flame-retardant hot-melt adhesive film of electron trade, described method comprises the steps:
Step 1, nitrogen phosphorus composite flame-retardant agent, melamine cyanurate and triphenylphosphate is standby by proportioning mix and blend;
Getting polyester hot-melt adhesive adds in stirrer, Heating temperature is to 150-180 ℃, until polyester hot-melt adhesive fusing, then add nitrogen phosphorus composite flame-retardant agent, melamine cyanurate and the triphenylphosphate mixture after above-mentioned mix and blend, it is temperature-resistant that heating keeps, and stirs to obtain compound;
Step 2, step 1 gained compound is placed in to granulation in tablets press, dries, obtain hot melt adhesive tablet;
Step 3, step 2 gained hot melt adhesive tablet is placed in and in blowfilm shaping machine, makes tubular glued membrane.
The present invention is for the halogen-free flameproof glued membrane of electron trade, non-hygroscopic, nontoxic, burning time does not produce thick smoke, flame retardant properties is good, is compound in conductive fabric surface, and film thickness can reach the fire-retardant requirement of UL94V-0 level at 0.10mm, foam is had to good cohesiveness simultaneously, meet environmental requirement.
UL94 detection method: little the long 125 ± 5mm of sample, wide 13.0 ± 0.5mm, total thickness is 0.20mm.Need altogether 5 samples.In without air test case, carry out.Clamp clamps on support for sample upper end (place of 6.4mm), and keep the longitudinal axis of sample vertical.Sample lower end is apart from lamp mouth 9.5mm, apart from the cotton surperficial 305mm. of drying defatted.Spirit lamp is lighted and is adjusted to the high flame of generation 19mm, alcohol lights flame is placed in to sample lower end, igniting 10s, then removes flame, and writes down the sample flaming combustion time, and the 10s that again lights a fire immediately after extinguishing, then the lamp of leaving away, record combustion time
V-0 rank need meet the following conditions:
(1) 5 sample is lighted a fire for the first time, after lamp is left away, is all no more than 5s each combustion time
(2) 5 sample concurrents fire 10 times, amounts to and can not surpass 50s combustion time
(3) every sample all can not burn fixture place
(4) falling behind of burning can not be lighted the absorbent cotton that is placed in 305mm place, below
(5) after lighting for the 2nd time, the flameless combustion time can not surpass 30s.
Embodiment
Embodiment 1:
A kind of raw material composition that is applied to the halogen-free flame-retardant hot-melt adhesive film of electron trade sees the following form:
Its preparation method is:
Step 1, that each raw material in B component is pressed described in above table to proportioning mix and blend is standby;
Get A component and add in stirrer, Heating temperature to 150 ℃, until A fusing adds the B component after above-mentioned mix and blend again, heating keeps 150 ℃ of temperature constant, stirs to obtain compound;
Step 2, step 1 gained compound is placed in to granulation in tablets press, dries, obtain hot melt adhesive tablet;
Step 3, step 2 gained hot melt adhesive tablet is placed in and in blowfilm shaping machine, makes tubular glued membrane;
Step 4, use side cutter cuts both sides, make tubular glued membrane become biplate shape glued membrane, film thickness 0.10mm.
Be compound in conductive fabric surface, the conductive fabric after overlay film does not have a hardening before having overlay film, and film is exposed in air, observes film surface without obvious wet and slippery sense after 15 days, according to flame retardant resistance detection method, can reach the fire-retardant requirement of UL94V-0 level.
Embodiment 2:
Raw material forms:
All preparation processes are with embodiment 1.
Be compound in conductive fabric surface, conductive fabric after overlay film is compared to not having flexibility before overlay film to change little, film is exposed in air, after ten days, observe film surface without wet and slippery sense, according to flame retardant resistance detection method, can reach the fire-retardant requirement of UL94V-0 level, and the extinction time after fire is shorter compared with embodiment 1.
Embodiment 3:
Raw material forms
All preparation processes are with embodiment 1.
Be compound in conductive fabric surface, conductive fabric after overlay film is compared to not having flexibility before overlay film to change little, film is exposed in air, after 15 days, observe film surface still dry, according to flame retardant resistance detection method, can reach the fire-retardant requirement of UL94V-0 level, and further shorten the extinction time after fire compared with embodiment 1 and embodiment 2.
Claims (3)
1. a halogen-free flame-retardant hot-melt adhesive film that is applied to electron trade, is characterized in that, it is that the main raw material by following weight part forms:
20～50 parts of polyester hot-melt adhesives
15～30 parts of nitrogen phosphorus composite flame-retardant agents
20～45 parts of melamine cyanurates
5～20 parts of triphenylphosphates.
2. the halogen-free flame-retardant hot-melt adhesive film that is applied to electron trade as claimed in claim 1, is characterized in that described nitrogen phosphorus composite flame-retardant agent main component is ammonium polyphosphate, and being added with nitrogen is synergist.
3. the method for the halogen-free flame-retardant hot-melt adhesive film that is applied to electron trade described in preparation claim 1 or 2, is characterized in that described method comprises the steps:
Step 1, nitrogen phosphorus composite flame-retardant agent, melamine cyanurate and triphenylphosphate is standby by proportioning mix and blend;
Getting polyester hot-melt adhesive adds in stirrer, Heating temperature is to 150-180 ℃, until polyester hot-melt adhesive fusing, then add nitrogen phosphorus composite flame-retardant agent, melamine cyanurate and the triphenylphosphate mixture after above-mentioned mix and blend, it is temperature-resistant that heating keeps, and stirs to obtain compound;
Step 2, step 1 gained compound is placed in to granulation in tablets press, dries, obtain hot melt adhesive tablet;
Step 3, step 2 gained hot melt adhesive tablet is placed in and in blowfilm shaping machine, makes tubular glued membrane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310672740.5A CN103694922B (en) | 2013-12-12 | 2013-12-12 | Halogen-free flame-retardant hot melt adhesive membrane applied to electronics industry and preparation method of membrane |
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|---|---|---|---|
| CN201310672740.5A CN103694922B (en) | 2013-12-12 | 2013-12-12 | Halogen-free flame-retardant hot melt adhesive membrane applied to electronics industry and preparation method of membrane |
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| CN103694922A true CN103694922A (en) | 2014-04-02 |
| CN103694922B CN103694922B (en) | 2015-06-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735603A (en) * | 2015-03-31 | 2015-06-24 | 苏州滕艺科技有限公司 | Film laminating process for loudspeaker mesh enclosure |
| CN106893522A (en) * | 2017-03-31 | 2017-06-27 | 江苏斯瑞达新材料科技有限公司 | Electricity conductive cloth tape adhesive and electricity conductive cloth tape |
| CN107987745A (en) * | 2017-12-08 | 2018-05-04 | 广东莱尔新材料科技股份有限公司 | A kind of halogen-free flame-retardant hot-melt adhesive film on high-frequency transmission wire rod |
| CN111452376A (en) * | 2020-04-27 | 2020-07-28 | 深圳市信维通信股份有限公司 | Manufacturing process of conductive foam |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735603A (en) * | 2015-03-31 | 2015-06-24 | 苏州滕艺科技有限公司 | Film laminating process for loudspeaker mesh enclosure |
| CN104735603B (en) * | 2015-03-31 | 2017-11-10 | 苏州滕艺科技有限公司 | Film attaching process for horn mesh enclosure |
| CN106893522A (en) * | 2017-03-31 | 2017-06-27 | 江苏斯瑞达新材料科技有限公司 | Electricity conductive cloth tape adhesive and electricity conductive cloth tape |
| CN106893522B (en) * | 2017-03-31 | 2019-02-26 | 江苏斯瑞达新材料科技有限公司 | Electricity conductive cloth tape adhesive and electricity conductive cloth tape |
| CN107987745A (en) * | 2017-12-08 | 2018-05-04 | 广东莱尔新材料科技股份有限公司 | A kind of halogen-free flame-retardant hot-melt adhesive film on high-frequency transmission wire rod |
| CN111452376A (en) * | 2020-04-27 | 2020-07-28 | 深圳市信维通信股份有限公司 | Manufacturing process of conductive foam |
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| CN103694922B (en) | 2015-06-03 |
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