CN108587119A - A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys and preparation method thereof - Google Patents
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys and preparation method thereof Download PDFInfo
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- CN108587119A CN108587119A CN201810386127.XA CN201810386127A CN108587119A CN 108587119 A CN108587119 A CN 108587119A CN 201810386127 A CN201810386127 A CN 201810386127A CN 108587119 A CN108587119 A CN 108587119A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- C—CHEMISTRY; METALLURGY
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Abstract
The present invention relates to a kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight include：15~25 parts of 40~60 parts of TPU, PVC, 6~10 parts of plasticizer, 1~3 part of heat stabilizer, 1~2 part of lubricant, 5~25 parts of suppression cigarette compound flame retardant；Each raw material is put into double screw extruder after mixing, squeezes out, be granulated.The present invention compounds Intumescent Retardant System using ammonium polyphosphate, pentaerythrite and kaolin, thermal stability of the TPU/PVC alloys in hot stage obtained by can effectively being promoted, increase mass of residue, reaches the fire-retardant and smoke suppressing effect to modified TPU/PVC alloys, and ensure its mechanical property；Gained modified TPU/PVC alloy tensiles intensity of the invention is up to 14~18MPa, and 3mm battens vertical combustion is up to 0 grade of V, and oxygen index (OI) reaches 40 or more, and cigarette, heat release rate are slow, function admirable, and applicability is wide.
Description
Technical field
The present invention relates to polymeric material fields, and in particular to a kind of smoke-inhibiting flame retardant modified TPU/PVC alloys and its preparation
Method.
Background technology
TPU can carry out blending and modifying with many polymer, wherein more with PVC blending studies.TPU first and PVC has
The anti-flammability that can be effectively reduced the cost of TPU and reinforce TPU is blended with PVC for preferable compatibility.And PVC is steady because there is heat
The problems such as qualitative and lower temperature resistance poor (especially low temperature elasticity), limits its application, can be effectively by being blended with TPU
Overcome this disadvantage.PVC can not only reduce the cost of TPU, the processability and water penetration that can also be adjusted hardness, improve TPU,
Improve anti-flammability, the heat resistance for improving TPU and weatherability, reduce friction coefficient etc..Such as TPU/PVC composite artificial leathers, both had
The advantages of TPU leather surface is salubrious, acid-fast alkali-proof, solvent resistant, appearance are close to natural leather, but it is at low cost, cheap with PVC leather
The advantages of.
However as most of high polymers, TPU has inflammability, and limit oxygen index (LOI) is only 18% or so, and
It is not easy to put out when burning, while there is serious molten drop drip phenomenon, and release a large amount of black smokes and toxic gas.Recent decades
Come, the fire incident of polyurethane material frequently occurs, therefore its flame retardant property has attracted much attention, and current many scientists are dedicated to gathering
The flame-retardant modified research of urethane.Even if the addition of PVC can effectively promote its flame retardant property, but its flame retardant property cannot still reach
To the requirement to Flame Retardancy energy in application.
Invention content
The main object of the present invention is the problem for the fire-retardant property deficiency of TPU/PVC composite materials, is provided a kind of efficient
Smoke-inhibiting flame retardant modified TPU/PVC alloys, using ammonium polyphosphate modifying, pentaerythrite (PER) and kaolin compound flame retardant pair
TPU/PVC alloys carry out cooperative flame retardant modification, and it is good to obtain flame retardant property, mechanical property, water resistance, wearability and weather resistance
Composite material.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight include：40~60 parts of TPU,
PVC15~25 part, 6~10 parts of plasticizer, 1~3 part of heat stabilizer, 1~2 part of lubricant, 5~25 parts of suppression cigarette compound flame retardant.
In said program, the suppression cigarette compound flame retardant is by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolinite
Soil presses 5:(1~2):The mass ratio of (0.5~2) mixes.
In said program, the preparation method of the ammonium polyphosphate modifying includes the following steps：By ammonium polyphosphate 50~70
3~10min is heated at a temperature of DEG C, and the vinyltrimethoxysilane solution that temperature is 40~60 DEG C, stirring 1~10 is then added
Minute, 3~10 minutes are stood, is further continued for stirring 3~10 minutes, the finally drying 1~3 under conditions of temperature is 100~250 DEG C
Hour is to get ammonium polyphosphate modifying.
In said program, the vinyl trimethoxy silicon of the ammonium polyphosphate and the introducing of vinyltrimethoxysilane solution
The mass ratio of alkane is 100:(1~5)；The mass concentration of vinyltrimethoxysilane solution medium vinyl trimethoxy silane is
2~10%；The solvent that vinyltrimethoxysilane solution uses is acetone, absolute ethyl alcohol, absolute methanol, dichloromethane, three
Chloromethanes, petroleum ether, ether or benzene.
By said program, the TPU is polyester-type, and hardness is 75~85A；The apparent density of PVC is 0.5~0.6g/
cm3。
In said program, the plasticizer is dioctyl phthalate (DOP).
By said program, the heat stabilizer is Ca-Zn composite heat stabilizer.
By said program, the lubricant is barium stearate or calcium stearate.
A kind of preparation method of above-mentioned smoke-inhibiting flame retardant modified TPU/PVC alloys, includes the following steps：
1) each raw material is weighed according to the ratio, and each raw material and its shared parts by weight include：40~60 parts of TPU, PVC 15~25
Part, 6~10 parts of plasticizer, 1~3 part of heat stabilizer, 1~2 part of lubricant, 15~25 parts of suppression cigarette compound flame retardant；
2) dry PVC and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer according to the ratio；
3) after mixing by gained preplasticizing PVC, TPU and compound flame retardant, input double screw extruder feeding port is set
The rotating speed for setting double screw extruder is that 150~300r/min is squeezed out and is granulated, and obtains smoke-inhibiting flame retardant modified TPU/PVC alloys.
In said program, the preplasticizing technique is：Setting high-speed mixer engine speed is 80~150r/min, works as height
When the temperature of fast mixing machine reaches 50~60 DEG C, PVC and heat stabilizer is added, when continuing to be heated to 80~85 DEG C, plasticising is added
Agent continues heating 8~15 minutes, when temperature rise is to 100~105 DEG C, stops heating, obtains preplasticizing PVC.
By said program, the temperature in the areas the double screw extruder Zhong Ge is：One area's temperature is 150~160 DEG C, two area's temperature
Degree is 155~160 DEG C, and three area's temperature are 160~165 DEG C, and four area's temperature are 165~170 DEG C, and five area's temperature are 170~175
DEG C, six area's temperature are 170~175 DEG C, and seven area's temperature are 170~175 DEG C.
Since APP is in the fire retardant as macromolecule material product, product is influenced by atmospheric environment, and APP can be from system
Effusion, the moisture absorption, decomposition, cause flame retardant property to substantially reduce inside product, the present invention use vinyltrimethoxysilane to APP into
Row modification increases compatibility, the weatherability of APP and material；And it is total to pentaerythrite, kaolin using modified APP
Be blended high-performance compounding Intumescent Retardant System, acid sources and air source of the APP as intumescent system, pentaerythrite (PER) be carbon source,
Kaolin is as synergistic flame retardant；The moisture that kaolin low-temperature decomposition generates can reduce temperature of the material in burning, in addition
Its main component Al2O3The sour gas that PVC is thermally decomposed can not only be absorbed, the porous of APP/PER generations more can be further filled
Foam layer of charcoal improves the compactness of layer of charcoal, enhances heat-insulating flame-retardant effect, while also inhibiting the release of toxic gas, subtracts
Smoke amount is lacked.
Compared with prior art, beneficial effects of the present invention are：
1) present invention carries out that obtained high-performance compounding expandable flame retardant body is blended with pentaerythrite, kaolin using modified APP
System, which can be uniformly dispersed in TPU/PVC composite materials, play good suppression cigarette, flame retardant effect it is same
When, in the flame-retardant system introducing of inorganic rigid particle can effectively promote the hot-working character of TPU/PVC composite materials, solve
The bad problem of TPU/PVC fluidity of molten.
2) compounding Intumescent Retardant System is introduced into TPU/PVC composite systems by the present invention, big in ammonium polyphosphate molecule
The N-H keys of amount are combined to form hydrogen bond with the O in TPU long-chains with N atoms, while improving composite material thermal stability, are increased
The rigidity of gained composite material is added.
3) the heated problems easily decomposed and smoke amount is big of PVC in alloy are directed to, select kaolin as synergistic flame retardant, one
Aspect can absorb PVC and decompose the toxic gases such as the HCl generated, on the other hand can accelerate into charcoal rate, improve the cause of layer of charcoal
Close property further functions as the effect of suppression cigarette；In addition suitable kaolin is introduced in compounding flame retardant, kaolin is filled into poly-
In the defect for closing object, the stress concentration of matrix is made to change, the deformation of initiation particle periphery resin yield (including cavitation, crazing
Change, shear band effect), realize toughening effect.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
In following embodiment, the TPU used is polyester-type, hardness 85A；The apparent density of PVC is 0.56g/cm3。
In following embodiment, the preparation method of the ammonium polyphosphate modifying includes the following steps：100g ammonium polyphosphate is existed
It is heated at a temperature of 60 DEG C 5 minutes, 500ml dispersant (anhydrous second then is added in 15g modifying agent (vinyltrimethoxysilane)
Alcohol) in be uniformly mixed and be heated to 45 DEG C, obtain modified solution (vinyltrimethoxysilane solution)；Gained modified solution is fallen
Enter in the ammonium polyphosphate by heat treatment, stir 5 minutes, stand 10 minutes, is further continued for stirring 10 minutes, then be in temperature
3 hours are dried under conditions of 200 DEG C to get ammonium polyphosphate modifying.
Embodiment 1
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 45, PVC 20 increases
Agent (dioctyl phthalate) 8, heat stabilizer (Ca-Zn composite heat stabilizer) 1 are moulded, it is multiple to press down cigarette for lubricant (barium stearate) 1
With fire retardant 25；Wherein suppression cigarette compound flame retardant presses 5 by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolin:2:1
Mass ratio mix；The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 170 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 172 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
Embodiment 2
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 51, PVC 22 increases
Agent (dioctyl phthalate) 8, heat stabilizer (Ca-Zn composite heat stabilizer) 2 are moulded, it is multiple to press down cigarette for lubricant (barium stearate) 1
With fire retardant 15；Wherein suppression cigarette compound flame retardant presses 5 by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolin:2:1
Mass ratio mix；The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 170 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 172 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
Embodiment 3
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 57, PVC 25 increases
Agent (dioctyl phthalate) 9, heat stabilizer (Ca-Zn composite heat stabilizer) 2 are moulded, it is multiple to press down cigarette for lubricant (barium stearate) 2
With fire retardant 5；Wherein suppression cigarette compound flame retardant presses 5 by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolin:2:1
Mass ratio mix；The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 170 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 172 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
Comparative example 1
A kind of TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 60, PVC 26, plasticizer (adjacent benzene two
Formic acid dioctyl ester) 10, heat stabilizer (Ca-Zn composite heat stabilizer) 2, lubricant (barium stearate) 2, suppression cigarette compound flame retardant 0；
The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 173 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 173 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
Examples 1 to 3,1 gained TPU/PVC alloys of comparative example are subjected to cone calorimetry, oxygen index (OI), UL94 flame retardant properties
Test, test result are as shown in table 1：
Table 1
As it can be seen from table 1 the addition of PVC can effectively promote the flame retardant property of TPU, with the increasing of flame retardant agent content
Add, the limit oxygen index of gained TPU/PVC alloys gradually rises；The fire-retardant grade of TPU/PVC alloy materials obtained by the present invention
Do not reach V-0 grades or more of UL94 standards, and total smoke release when 500s decreased significantly with Heat liberation unit, this shows this
Flame-retardant system can improve the smoke suppressing and flame retardant property of alloy；In addition, can by the test result of melt index and 100% modulus
To show that the introducing of the flame-retardant system has improvement to the processing fluidity of composite material and rigidity etc..
Embodiment 4
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 51, PVC 22 increases
Agent (dioctyl phthalate) 8, heat stabilizer (Ca-Zn composite heat stabilizer) 2 are moulded, it is multiple to press down cigarette for lubricant (barium stearate) 2
With fire retardant 15；Wherein suppression cigarette compound flame retardant presses 5 by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolin:2:
0.5 mass ratio mixes；The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 170 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 172 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
Embodiment 5
A kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 51, PVC 22 increases
Agent (dioctyl phthalate) 8, heat stabilizer (Ca-Zn composite heat stabilizer) 2 are moulded, it is multiple to press down cigarette for lubricant (barium stearate) 2
With fire retardant 15；Wherein suppression cigarette compound flame retardant presses 5 by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolin:2:2
Mass ratio mix；The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 170 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 172 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
Comparative example 2
A kind of flame-retardant modified TPU/PVC alloys, each raw material and its shared parts by weight are：TPU 51, PVC 22, plasticizer
(dioctyl phthalate) 8, heat stabilizer (Ca-Zn composite heat stabilizer) 2, lubricant (barium stearate) 2, suppression cigarette compounding resistance
Fire agent 15；Wherein suppression cigarette compound flame retardant presses 5 by ammonium polyphosphate modifying (APP), pentaerythrite (PER) and kaolin:2:0 matter
Amount ratio mixes；The preparation method of the smoke-inhibiting flame retardant modified TPU/PVC alloys includes the following steps：
1) PVC weighed and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer；Specially：
Setting high-speed mixer engine speed is 100r/min, and when the temperature of high-speed mixer reaches 60 DEG C, PVC and thermostabilization is added
Agent when continuing to be heated to 80 DEG C, is added plasticizer, continues heating 10 minutes, when temperature rise is to 105 DEG C, stops heating, obtains
Preplasticizing PVC；
2) it after being uniformly mixed according to a ratio TPU and preplasticizing PVC, compound flame retardant, is placed in double screw extruder, is arranged
The temperature in each area of double screw extruder is：One area's temperature is 160 DEG C, and two area's temperature are 160 DEG C, and three area's temperature are 165 DEG C, 4th area
Temperature is 165 DEG C, and five area's temperature are 170 DEG C, and six area's temperature are 175 DEG C, and seven area's temperature are 172 DEG C, and twin-screw extrusion is arranged
The rotating speed of machine is that 200r/min is squeezed out and is granulated to get smoke-inhibiting flame retardant modified TPU/PVC alloys.
By embodiment 2,4~5,2 resulting product sample preparation of comparative example, mechanical property and flame retardant property test are carried out respectively,
Test result is as shown in table 2：
Table 2
As can be seen from Table 2, the present invention 3 groups of embodiments of gained and the hardness of 2 gained alloy of comparative example are suitable (in 90A
Left and right), and the flame retardant property for adding kaolinic 3 groups of embodiments can reach V-0 ranks.The test result for comparing upper table can
To find out, innovative introducing kaolin can significantly reduce total smoke release in APP and PER, reach preferable suppression cigarette mesh
, this is because on the one hand the moisture at 110 DEG C or so, sloughed of kaolinic dehydration temperaturre can reduce material in burning
Temperature；On the other hand its main component Al2O3The sour gas that PVC is thermally decomposed can not only be absorbed, APP/ more can be further filled
The porous foam layer of charcoal that PER is generated, enhances heat-insulating flame-retardant effect, while also inhibiting the release of toxic gas, reduces hair
Smoke.In addition, comparison draw high intensity can be seen that introducing suppression cigarette compound flame retardant can play the role of toughening, ammonium phosphate
(APP), pentaerythrite (PER) and kaolin in mass ratio 5:2:When 1 mixing, there is a peak value in tensile strength, and 100% stretches surely
Stress promotes nearly 22% or so.
Obviously, above-described embodiment is just for the sake of example made by clearly explanation, and is not the limitation to embodiment.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.There is no need and unable to all embodiments and with exhaustion.And therefore amplified it is obvious variation or
It changes within still in the protection domain of the invention.
Claims (9)
1. a kind of smoke-inhibiting flame retardant modified TPU/PVC alloys, which is characterized in that each raw material and its shared parts by weight include：TPU
40~60 parts, 15~25 parts of PVC, 6~10 parts of plasticizer, 1~3 part of heat stabilizer, 1~2 part of lubricant, suppression cigarette compositional flame-retardant
5~25 parts of agent.
2. smoke-inhibiting flame retardant modified TPU/PVC alloys according to claim 1, which is characterized in that the suppression cigarette compositional flame-retardant
Agent presses 5 by ammonium polyphosphate modifying, pentaerythrite and kaolin:(1~2):The mass ratio of (0.5~2) mixes.
3. smoke-inhibiting flame retardant modified TPU/PVC alloys according to claim 2, which is characterized in that the ammonium polyphosphate modifying
Preparation method include the following steps：Ammonium polyphosphate is heated into 3~10min at a temperature of 50~70 DEG C, temperature, which is then added, is
40~60 DEG C of vinyltrimethoxysilane solution stirs 1~10 minute, stands 3~10 minutes, is further continued for stirring 3~10
Minute, 1~3 hour is finally dried under conditions of temperature is 100~250 DEG C to get ammonium polyphosphate modifying.
4. smoke-inhibiting flame retardant modified TPU/PVC alloys according to claim 3, which is characterized in that the ammonium polyphosphate and second
The mass ratio of alkenyl trimethoxy silane is 100:(1~5)；Vinyltrimethoxysilane solution medium vinyl trimethoxy silicon
The mass concentration of alkane is 2~10%；The solvent that vinyltrimethoxysilane solution uses for acetone, absolute ethyl alcohol, without water beetle
Alcohol, dichloromethane, chloroform, petroleum ether, ether or benzene.
5. smoke-inhibiting flame retardant modified TPU/PVC alloys according to claim 1, which is characterized in that the TPU is polyester-type,
Hardness is 75~85A.
6. smoke-inhibiting flame retardant modified TPU/PVC alloys according to claim 1, which is characterized in that the apparent density of the PVC
For 0.5~0.6g/cm3。
7. the preparation method of any one of the claim 1-6 smoke-inhibiting flame retardant modified TPU/PVC alloys, which is characterized in that including
Following steps：
1) each raw material is weighed according to the ratio, and each raw material and its shared parts by weight include：15~25 parts of 40~60 parts of TPU, PVC,
6~10 parts of plasticizer, 1~3 part of heat stabilizer, 1~2 part of lubricant, 5~25 parts of suppression cigarette compound flame retardant；
2) dry PVC and plasticizer, heat stabilizer, lubricant are subjected to preplasticizing in high-speed mixer according to the ratio；
3) it after mixing by gained preplasticizing PVC, TPU and compound flame retardant, puts into double screw extruder and twin-screw is set
The rotating speed of extruder is that 150~300r/min is squeezed out and is granulated, and obtains smoke-inhibiting flame retardant modified TPU/PVC alloys.
8. preparation method according to claim 7, which is characterized in that the preplasticizing technique is：High-speed mixer is set
Engine speed is 80~150r/min, and when the temperature of high-speed mixer reaches 50~60 DEG C, PVC and heat stabilizer is added, after
It is continuous when being heated to 80~85 DEG C, plasticizer is added, continues heating 8~15 minutes, when temperature rise is to 100~105 DEG C, stops
Heating, obtains preplasticizing PVC.
9. preparation method according to claim 7, which is characterized in that the temperature in the areas the double screw extruder Zhong Ge is：
One area's temperature is 150~160 DEG C, and two area's temperature are 155~160 DEG C, and three area's temperature are 160~165 DEG C, and four area's temperature are 165
~170 DEG C, five area's temperature are 170~175 DEG C, and six area's temperature are 170~175 DEG C, and seven area's temperature are 170~175 DEG C.
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