CN107778431A - A kind of defensive TPU materials of monitoring camera and preparation method thereof - Google Patents
A kind of defensive TPU materials of monitoring camera and preparation method thereof Download PDFInfo
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- CN107778431A CN107778431A CN201711078089.3A CN201711078089A CN107778431A CN 107778431 A CN107778431 A CN 107778431A CN 201711078089 A CN201711078089 A CN 201711078089A CN 107778431 A CN107778431 A CN 107778431A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6505—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6511—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38 compounds of group C08G18/3203
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention provides defensive TPU materials of a kind of monitoring camera and preparation method thereof, the preparing raw material of the TPU materials includes the component of following parts by weight：The parts by weight of isocyanates 50 60, the parts by weight of polyalcohol 40 60, the parts by weight of polyester 5 10 containing phosphonitrile, the parts by weight of bisphenol A diglycidyl ether 35, the parts by weight of styrene acrylonitrile copolymer 3 10, the parts by weight of makrolon 10 20, the parts by weight of chain extender 14, the parts by weight of catalyst 13.TPU materials provided by the invention have good transparency, and transparency has good weatherability up to more than 85%, can meet the application requirement in outdoor.
Description
Technical field
The invention belongs to field of compound material, is related to defensive TPU materials of a kind of monitoring camera and preparation method thereof.
Background technology
The entitled TPUE rubber of TPU, it is a kind of new organic polymer synthetic material, can replaces
Conventional polyurethanes are superior to for rubber or soft polyvinyl chloride material, its good wearability, resilience, ageing-resistant performance is better than
Rubber, it may be said that TPU is the optimal material for substituting PVC and PU, is referred to as novel polymer material in the world.Its molecule
Structure is the hard block and diisocyanate and macromolecular polyol reaction obtained by diisocyanate and chain extender reaction
What obtained soft segment was alternately formed.TPU has remarkable high-tension, high-tensile strength, tough and anti-aging property, extensively should
For health care, electronic apparatus and sports goods etc..
The protective cover of monitoring camera protective cover generally use fire resistance or flame retardant type, the effect of protective cover mainly prevent
The infringement of dust, corrosive gas to CCTV camera, tackles different climatic environments, and needs intensity high, and form is transparent
Spend, do not influence monitoring effect, it is excellent to be also required to weatherability in addition.Up to the present, applied in terms of monitoring camera protection
TPU almost without report, it is necessary to develop the TPU materials of New function to extend TPU application.
The content of the invention
It is an object of the invention to provide defensive TPU materials of a kind of monitoring camera and preparation method thereof.
To use following technical scheme up to this purpose, the present invention：
On the one hand, the invention provides a kind of defensive TPU materials of monitoring camera, it is characterised in that the TPU materials
The preparing raw material of material includes the component of following parts by weight：
TPU materials provided by the invention include polyester and bisphenol A diglycidyl ether containing phosphonitrile, two-way interaction,
Synergistic, can increase the fire resistance of TPU materials, and add in TPU polyester containing phosphonitrile and bisphenol-A two shrink it is sweet
Oily ether and SAN and makrolon can together with increase the intensity of TPU materials, be last TPU materials
Meet the intensity requirement of protective cover, while the weatherability of material can be increased, the TPU materials that can so allow to obtain are applied
In outdoor shield, extend service life when TPU is applied out of doors.Makrolon, makrolon tool are added in TPU materials
There is the very high transparency, makrolon is added in TPU materials, the TPU materials that can make to finally obtain have transparent well
Degree, can meet the requirement of vision glass for protective cover transparency.
In the present invention, the parts by weight of the isocyanates are 50-60 parts by weight, such as 50 parts by weight, 52 parts by weight, 55
Parts by weight, 57 parts by weight, 60 parts by weight etc..
Preferably, the isocyanates is trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) using mass ratio as 1:
The mixture that (4-8) is formed, described 1: (4-8) can be 1: 4,1: 5,1: 6,1: 7,1: 8 etc..
In the present invention, the isocyanates of selection is the mixing of trimethyl silicane based isocyanate and toluene di-isocyanate(TDI)
Thing, the two is 1: the toughness and intensity of TPU materials can be preferably adjusted under the ratio of (4-8), makes the TPU materials obtained by the present invention
Material meets the requirement of monitoring camera protection intensity.
In the present invention, the parts by weight of the polyalcohol are 40-60 parts by weight, such as 40 parts by weight, 45 parts by weight, 50 weights
Measure part, 55 parts by weight, 60 parts by weight etc..
Preferably, the number-average molecular weight of the polyalcohol is 1000-4000, such as 1000,2000,3000,4000 etc..
In the present invention, the parts by weight of the polyester containing phosphonitrile are 5-10 parts by weight, such as 5 parts by weight, 6 parts by weight, 7
Parts by weight, 8 parts by weight, 9 parts by weight, 10 parts by weight etc..
Preferably, the polyester containing phosphonitrile has following structure：
Wherein n is 1-10,
Such as 1,2,5,7,10 etc..
In the present invention, from the polyester containing phosphonitrile on the one hand because the phosphonitrile structure in polyester can increase TPU materials
Anti-flammability, another aspect polyester and makrolon and SAN have good compatibility, can increased poly-
Compatibility between compound interface, phenomena such as TPU materials for making to finally obtain are not in phase separation and reduce polymeric material
Performance.
In the present invention, the parts by weight of the bisphenol A diglycidyl ether are 3-5 parts by weight, such as 3 parts by weight, 4 weight
Part, 5 parts by weight etc..
In the present invention, the parts by weight of the SAN are 3-10 parts by weight, such as 3 parts by weight, 5
Parts by weight, 7 parts by weight, 10 parts by weight etc..
In the present invention, the parts by weight of the makrolon are 10-20 parts by weight, such as 10 parts by weight, 12 parts by weight, 15
Parts by weight, 17 parts by weight, 20 parts by weight etc..
Preferably, the number-average molecular weight of the makrolon is 3000-10000.
In the present invention, the parts by weight of the chain extender are 1-4 parts by weight, for example, 1 parts by weight, 2 parts by weight, 3 parts by weight,
4 parts by weight etc..
Preferably, the chain extender is in ethylene glycol, ethylenediamine, 1,3-PD, BDO or 1,5-PD
Any one or at least two combination.
In the present invention, the parts by weight of the catalyst are 1-3 parts by weight, such as 1 parts by weight, 2 parts by weight, 3 parts by weight.
Preferably, the catalyst be in stannous octoate, two sad two fourth tin or the fourth tin of moon silicic acid two any one or
At least two combination.
On the other hand, the invention provides the preparation method of the defensive TPU materials of monitoring camera as described above, institute
Preparation method is stated to comprise the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under agitation, in 80-100 DEG C
(such as 80 DEG C, 85 DEG C, 90 DEG C, 95 DEG C, 100 DEG C etc.) reaction 1-5h (such as 1h, 2h, 3h, 4h, 5h etc.)；
(2) polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon are carried out
It is kneaded, obtains mixture；
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, utilizes twin-screw extrusion
Machine is extruded, and obtains the defensive TPU materials of the monitoring camera.
The preparation method of TPU materials as described above provided by the invention is simple and easy, utilizes preparation provided by the invention
The TPU materials that method obtains have high transparency, good anti-flammability and the intensity and weatherability that can meet application.
In the present invention, the speed of step (1) described stirring is 80-120r/min, such as 80r/min, 90r/min,
100r/min, 110r/min, 120r/min etc..
Preferably, the temperature of step (2) described mixing be 100-120 DEG C, such as 100 DEG C, 105 DEG C, 110 DEG C, 115 DEG C,
120 DEG C etc..
Preferably, the time of step (2) described mixing is 3-8 hours, for example, 3 hours, 4 hours, 5 hours, 6 hours, it is 7 small
When, 8 hours etc..
Preferably, the feeding section temperature of step (3) described double screw extruder be 130-150 DEG C (such as 130 DEG C, 135
DEG C, 140 DEG C, 145 DEG C, 150 DEG C etc.), mixing section temperature be 140-160 DEG C (such as 140 DEG C, 145 DEG C, 150 DEG C, 155 DEG C, 160
DEG C etc.), extruding zone temperature is 180-200 DEG C (such as 180 DEG C, 185 DEG C, 190 DEG C, 195 DEG C, 200 DEG C etc.), and head temperature is
160-170 DEG C (such as 160 DEG C, 162 DEG C, 165 DEG C, 167 DEG C, 170 DEG C etc.).
Relative to prior art, the invention has the advantages that：
TPU materials provided by the invention have good transparency, and transparency has well resistance to up to more than 85%
Hou Xing, the application requirement in outdoor can be met.The mechanical property of TPU materials provided by the invention is enough to make provided by the invention
TPU materials applications in terms of the monitoring camera protection, meanwhile, TPU materials have certain anti-flammability, and oxygen index (OI) is more than
28.2%.Preparation method provided by the invention is simple for process.
Embodiment
Technical scheme is further illustrated below by embodiment.Those skilled in the art should be bright
, the embodiment be only to aid in understand the present invention, be not construed as to the present invention concrete restriction.
Embodiment 1
The preparing raw material for the defensive TPU materials of monitoring camera that the present embodiment provides includes the group of following parts by weight
Point：
Wherein, isocyanates is that trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) are formed using mass ratio as 1: 6
Mixture, the number-average molecular weight of polyalcohol is 2000, and the polymerization degree n of the polyester containing phosphonitrile is 5, the number-average molecular weight of makrolon
For 7000, chain extender is ethylene glycol, and catalyst is stannous octoate.
Preparation method comprises the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under 100r/min stir speed (S.S.),
3h is reacted in 90 DEG C.
(2) by the polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon 110
It is kneaded 5 hours at DEG C, obtains mixture.
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, utilizes twin-screw extrusion
Machine is extruded, and wherein the feeding section temperature of double screw extruder is 140 DEG C, and mixing section temperature is 150 DEG C, and extruding zone temperature is 190
DEG C, head temperature is 165 DEG C, obtains the defensive TPU materials of monitoring camera.
Embodiment 2
The preparing raw material for the defensive TPU materials of monitoring camera that the present embodiment provides includes the group of following parts by weight
Point：
Wherein, isocyanates is that trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) are formed using mass ratio as 1: 4
Mixture, the number-average molecular weight of polyalcohol is 4000, and the polymerization degree n of the polyester containing phosphonitrile is 7, the number-average molecular weight of makrolon
For 3000, chain extender is the composition of BDO and 1,5-PD, and catalyst is the fourth tin of moon silicic acid two.
Preparation method comprises the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under 120r/min stir speed (S.S.),
5h is reacted in 80 DEG C.
(2) by the polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon 100
It is kneaded 8 hours at DEG C, obtains mixture.
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, utilizes twin-screw extrusion
Machine is extruded, and wherein the feeding section temperature of double screw extruder is 150 DEG C, and mixing section temperature is 160 DEG C, and extruding zone temperature is 200
DEG C, head temperature is 170 DEG C, obtains the defensive TPU materials of monitoring camera.
Embodiment 3
The preparing raw material for the defensive TPU materials of monitoring camera that the present embodiment provides includes the group of following parts by weight
Point：
Wherein, isocyanates is that trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) are formed using mass ratio as 1: 8
Mixture, the number-average molecular weight of polyalcohol is 1000, and the polymerization degree n of the polyester containing phosphonitrile is 10, the equal molecule of number of makrolon
Measure as 10000, chain extender is 1,3-PD, and catalyst is the composition of stannous octoate and two sad two fourth tin.
Preparation method comprises the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under 80r/min stir speed (S.S.),
1h is reacted in 100 DEG C.
(2) by the polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon 120
It is kneaded 3 hours at DEG C, obtains mixture.
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, utilizes twin-screw extrusion
Machine is extruded, and wherein the feeding section temperature of double screw extruder is 130 DEG C, and mixing section temperature is 140 DEG C, and extruding zone temperature is 180
DEG C, head temperature is 160 DEG C, obtains the defensive TPU materials of monitoring camera.
Embodiment 4
The preparing raw material for the defensive TPU materials of monitoring camera that the present embodiment provides includes the group of following parts by weight
Point：
Wherein, isocyanates is that trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) are formed using mass ratio as 1: 7
Mixture, the number-average molecular weight of polyalcohol is 3000, and the polymerization degree n of the polyester containing phosphonitrile is 1, the number-average molecular weight of makrolon
For 8000, chain extender is 1,3-PD, and catalyst is the composition of stannous octoate and two sad two fourth tin.
Preparation method comprises the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under 110r/min stir speed (S.S.),
4h is reacted in 85 DEG C.
(2) by the polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon 115
It is kneaded 4 hours at DEG C, obtains mixture.
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, utilizes twin-screw extrusion
Machine is extruded, and wherein the feeding section temperature of double screw extruder is 145 DEG C, and mixing section temperature is 155 DEG C, and extruding zone temperature is 185
DEG C, head temperature is 167 DEG C, obtains the defensive TPU materials of monitoring camera.
Embodiment 5
The preparing raw material for the defensive TPU materials of monitoring camera that the present embodiment provides includes the group of following parts by weight
Point：
Wherein, isocyanates is that trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) are formed using mass ratio as 1: 5
Mixture, the number-average molecular weight of polyalcohol is 1000, and the polymerization degree n of the polyester containing phosphonitrile is 3, the number-average molecular weight of makrolon
For 5000, chain extender is the composition of ethylene glycol, ethylenediamine and 1,3-PD, and catalyst is two sad two fourth tin.
Preparation method comprises the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under 90r/min stir speed (S.S.),
2h is reacted in 95 DEG C.
(2) by the polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon 105
It is kneaded 7 hours at DEG C, obtains mixture.
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, utilizes twin-screw extrusion
Machine is extruded, and wherein the feeding section temperature of double screw extruder is 135 DEG C, and mixing section temperature is 145 DEG C, and extruding zone temperature is 185
DEG C, head temperature is 162 DEG C, obtains the defensive TPU materials of monitoring camera.
Comparative example 1
With differing only in for embodiment 1, trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) in this comparative example
Mass ratio is 1: 14.
Comparative example 2
With differing only in for embodiment 1, trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) in this comparative example
Mass ratio is 1: 1.
Comparative example 3
With differing only in for embodiment 1, this comparative example is without polyester of the addition containing phosphonitrile, and bisphenol-A 2-glycidyl
The addition of ether is the addition sum of the polyester and bisphenol A diglycidyl ether in embodiment 1 containing phosphonitrile, i.e., in this comparative example
The addition of middle bisphenol A diglycidyl ether is 15 parts by weight.
Comparative example 4
With differing only in for embodiment 1, this comparative example is without polyester of the addition containing phosphonitrile, and bisphenol-A 2-glycidyl
The addition of ether is the addition sum of the polyester and bisphenol A diglycidyl ether in embodiment 1 containing phosphonitrile, i.e., in this comparative example
The addition of middle bisphenol A diglycidyl ether is 15 parts by weight.
Performance test is carried out to the TPU materials that embodiment 1-5 and comparative example 1-4 is provided；To embodiment 1-5 and comparative example 1-
The 4 TPU materials weatherability tests provided：After TPU is carried out into following weatherability experiment, the mechanical property of test material, as a result such as
Table 1.
Weatherability experimentation：
(1) high temperature-water drenching circulates 80 times, each 6h
Surface of test piece temperature rises to 70 DEG C, heating and constant temperature time 3 hours altogether, water drenching (15 DEG C) 1 hour, it is small to stand 2
When.
(2) heating-freeze cycle 20 times, each 24h
Surface of test piece temperature rises to 50 DEG C, and heating and constant temperature time 8 hours altogether, constant temperature is not less than 5 hours, be cooled to-
20 DEG C, cooling and constant temperature time 16 hours, constant temperature is not less than 12h.
(3) 7 days are stood, tests mechanical property.
Table 1
From data, TPU materials good weatherability provided by the invention, after being tested by weatherability, the power of material
It is minimum to learn hydraulic performance decline degree, can still meet application requirement.And as can be seen from the data, TPU materials provided by the invention
Transparency more than 85%, oxygen index (OI) reaches more than 28.2%, has certain anti-flammability.Also, by embodiment and contrast
Knowable to the data of example are contrasted, the technical scheme that the present embodiment provides can make the combination property of TPU materials reach optimal.
The present invention illustrates a kind of defensive TPU materials of monitoring camera of the present invention and its system by above-described embodiment
Preparation Method, but the invention is not limited in above-described embodiment, that is, it is real not mean that the present invention has to rely on above-described embodiment ability
Apply.Person of ordinary skill in the field is it will be clearly understood that any improvement in the present invention, to the equivalent of each raw material of product of the present invention
Replacement and the addition of auxiliary element, the selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and disclosing.
Claims (10)
1. a kind of defensive TPU materials of monitoring camera, it is characterised in that the preparing raw material of the TPU materials includes as follows
The component of parts by weight：
2. the defensive TPU materials of monitoring camera according to claim 1, it is characterised in that the isocyanates is
Trimethyl silicane based isocyanate and toluene di-isocyanate(TDI) are using mass ratio as 1:The mixture that (4-8) is formed.
3. the defensive TPU materials of monitoring camera according to claim 1 or 2, it is characterised in that the polyalcohol
Number-average molecular weight is 1000-4000.
4. the defensive TPU materials of monitoring camera according to any one of claim 1-3, it is characterised in that described
Polyester containing phosphonitrile has following structure：
Wherein n is 1-10.
5. the defensive TPU materials of monitoring camera according to any one of claim 1-4, it is characterised in that described
The number-average molecular weight of makrolon is 3000-10000.
6. the defensive TPU materials of monitoring camera according to any one of claim 1-5, it is characterised in that described
Chain extender is any one or at least two in ethylene glycol, ethylenediamine, 1,3- propane diols, 1,4- butanediols or 1,5- pentanediols
Combination.
7. the defensive TPU materials of monitoring camera according to any one of claim 1-6, it is characterised in that described
Catalyst is the combination of any one or at least two in stannous octoate, two sad two fourth tin or the fourth tin of moon silicic acid two.
8. the preparation method of the defensive TPU materials of monitoring camera according to any one of claim 1-7, its feature
It is, the preparation method comprises the following steps：
(1) isocyanates, polyalcohol, chain extender and catalyst are added in container, under agitation, in 80-100 DEG C of reaction
1-5h；
(2) polyester containing phosphonitrile, bisphenol A diglycidyl ether, SAN, makrolon are kneaded,
Obtain mixture；
(3) mixture that step (2) obtains is added into step (1) reacted material, mixing, is squeezed using double screw extruder
Go out, obtain the defensive TPU materials of the monitoring camera.
9. preparation method according to claim 8, it is characterised in that the speed of step (1) described stirring is 80-120r/
min。
10. preparation method according to claim 8 or claim 9, it is characterised in that the temperature of step (2) described mixing is 100-
120℃；
Preferably, the time of step (2) described mixing is 3-8 hours；
Preferably, the feeding section temperature of step (3) described double screw extruder is 130-150 DEG C, and mixing section temperature is 140-160
DEG C, extruding zone temperature is 180-200 DEG C, and head temperature is 160-170 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480362A (en) * | 2019-09-11 | 2021-03-12 | 广东广山新材料股份有限公司 | Polyurethane composition and preparation method and application thereof |
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