CN110982251A - Gas mask elastic lens and preparation method thereof - Google Patents

Gas mask elastic lens and preparation method thereof Download PDF

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CN110982251A
CN110982251A CN201911090174.0A CN201911090174A CN110982251A CN 110982251 A CN110982251 A CN 110982251A CN 201911090174 A CN201911090174 A CN 201911090174A CN 110982251 A CN110982251 A CN 110982251A
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parts
stirring
modified
raw materials
polyether type
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韩非
韩彬
肖曙
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Anhui Qianlong Electromechanical Technology Co ltd
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Anhui Qianlong Electromechanical Technology Co ltd
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    • C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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    • C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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Abstract

The invention discloses an elastic lens of a gas mask, which comprises the following raw materials in parts by weight: 60-75 parts of modified polyether type TPU resin, 15-25 parts of modified linear low-density polyethylene, 5-9 parts of dibenzyl maleate, 4-7 parts of activated alumina, 2-5 parts of antioxidant and 2-6 parts of functional auxiliary agent. The polyether type TPU resin added in the invention has strong mechanical strength, cold resistance, oil resistance, water resistance and other properties, is more compatible with raw materials in lens materials after modification, improves the bonding strength among the raw materials, and is added with chlorinated polyether in the modification of the polyether type TPU resin for the purpose of reducing the tension between the modified carbon nano spiral tube and the resin so as to enhance the bonding capability of the modified carbon nano spiral tube and the resin, wherein the carbon nano spiral tube has an ultrahigh specific surface area and a spiral conversion structure.

Description

Gas mask elastic lens and preparation method thereof
Technical Field
The invention relates to the technical field of gas mask lenses, in particular to a gas mask elastic lens and a preparation method thereof.
Background
Gas masks are used as personal protective equipment to provide effective protection to the respiratory organs, eyes and facial skin of a person. The mask consists of a mask, an air duct and a canister, and the mask can be directly connected with the canister or a canister for use, which is called direct connection type; or the gas-guide tube is connected with the canister and the canister for use, which is called a catheter type. The gas mask can be applied to chemical industry, warehouses, scientific research and various toxic and harmful operating environments by respectively selecting various types of gas canisters according to protection requirements.
Although the existing elastic lens has high elasticity and strength, the existing elastic lens does not have complete cold resistance, aging resistance, weather resistance and the like, and is not suitable for being applied to gas masks, so that further improvement treatment is still needed.
Chinese patent literature publication No. CN110218279A discloses an anti-uv optical lens formulation comprising the following components by weight: 20-60 parts of diallyl isophthalate, 30-80 parts of diallyl terephthalate, 0.1-0.2 part of ultraviolet-resistant absorbent, 0.1-0.5 part of benzyl alcohol and 10-40 parts of dibutyl maleate, wherein the lens disclosed by the document is not applied to gas masks.
Chinese patent literature publication No. CN103819869B discloses a high-strength high-thermal-stability sensitive resin/polyether TPU alloy material, which comprises, by mass, 15-25 parts of polyether TPU, 30-60 parts of long glass fiber, 20-45 parts of sensitive matrix resin, 0.3-0.8 part of wear-resisting agent, 0.4-0.6 part of flowable auxiliary agent, 0.8-1.2 parts of chain extender and 0.4-0.6 part of antioxidant; the melt index of the polyether TPU is 25-55g/10min, 200 ℃/2.16Kg, and the Shore D hardness of the TPU is 65-85; the wear-resisting agent is ultrahigh molecular weight polysiloxane; the chain extender is composed of hydroquinone dihydroxyethyl ether and resorcinol dihydroxyethyl ether with equal amount, although the literature gives the technical suggestion of polyether type TPU materials, the selection of the raw materials of the gas mask and the proportion of the raw materials have great influence on the performance of the lens material.
Disclosure of Invention
The present invention is directed to a gas mask elastic lens and a method for manufacturing the same, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an elastic lens of a gas mask comprises the following raw materials in parts by weight:
60-75 parts of modified polyether type TPU resin, 15-25 parts of modified linear low-density polyethylene, 5-9 parts of dibenzyl maleate, 4-7 parts of activated alumina, 2-5 parts of antioxidant and 2-6 parts of functional auxiliary agent;
the modification method of the modified polyether type TPU resin comprises the following steps: adding the polyether type TPU resin into a reaction kettle, firstly heating the reaction kettle to 250-300 ℃, preserving the temperature for 10-20min, then adding chlorinated polyether accounting for 5% of the total amount of the polyether type TPU resin into the reaction kettle, firstly stirring the chlorinated polyether at the rotating speed of 200r/min for 30-40min, then adding a modified carbon nano spiral tube accounting for 20-30% of the total amount of the polyether type TPU resin, continuously stirring the mixture for 1-2h at the rotating speed of 600r/min for 300-600r/min, and finishing stirring.
Preferably, the gas mask elastic lens comprises the following raw materials in parts by weight:
64-72 parts of modified polyether type TPU resin, 17-23 parts of modified linear low-density polyethylene, 6-8 parts of dibenzyl maleate, 5-6 parts of activated alumina, 3-4 parts of antioxidant and 3-5 parts of functional auxiliary agent.
Preferably, the gas mask elastic lens comprises the following raw materials in parts by weight:
67.5 parts of modified polyether type TPU resin, 20 parts of modified linear low-density polyethylene, 7 parts of dibenzyl maleate, 6.5 parts of activated alumina, 3.5 parts of antioxidant and 4 parts of functional assistant.
Preferably, the modified carbon nanocircuit tube modification method comprises the steps of heating the carbon nanocircuit tube from room temperature to 210 ℃ at the speed of 1-3 ℃/min, then preserving heat for 20-30min, immediately placing the carbon nanocircuit tube in a coupling agent KH560 for reaction for 20-30min after the heat preservation is finished, cooling the reaction liquid to room temperature, centrifuging and washing with water.
Preferably, the preparation method of the modified linear low density polyethylene comprises the steps of firstly washing the linear low density polyethylene by deionized water for 1-3 times, then drying, then melting, adding the modifier and the grafting agent into the linear low density polyethylene, then stirring the mixture for 20-30min at the rotating speed of 260r/min, then cooling the mixture to room temperature, and adopting60CorAnd (4) performing radiation treatment by using a radiation source, wherein the total radiation dose is 2-6kGy, the radiation time is 1-2h, and the radiation treatment is finished.
Preferably, the modifier comprises the following raw materials in parts by weight: 30-40 parts of polymethyl methacrylate and 10-20 parts of polyoxyethylene.
Preferably, the grafting agent is a maleic anhydride grafting compatibilizer.
Preferably, the antioxidant is one or more of 1, 4-dibenzyloxy benzene, 4' -diaminodiphenylmethane and 3-hydroxybutyraldehyde-2-naphthylamine.
Preferably, the preparation method of the functional additive comprises the steps of firstly adding the nano titanium dioxide, the dibenzoyl peroxide and the propylene glycol into a magnetic stirrer, then adding the fused magnesia fine powder and the needle-shaped wollastonite powder, firstly increasing the rotating speed to 200-400r/min, stirring for 20-30min, adding the epoxy resin after stirring, continuing stirring for 3-6h, and obtaining the functional additive after stirring.
The invention also provides a method for preparing the gas mask elastic lens, which comprises the following steps:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the raw materials in the step one into a high-speed stirrer, stirring at the rotating speed of 500r/min for 30-40min, after stirring, sending into a double-screw extruder, wherein the extrusion temperature is 155 ℃ at 145-.
Compared with the prior art, the invention has the following beneficial effects:
the polyether type TPU resin added in the invention has strong mechanical strength, cold resistance, oil resistance, water resistance and other properties, is more compatible with the raw materials in the lens material after modification, improves the bonding strength among the raw materials, and the chlorinated polyether added in the modification of the polyether type TPU resin aims at reducing the tension between the modified carbon nano spiral tube and the resin so as to enhance the bonding capability of the carbon nano spiral tube and the resin, the carbon nano spiral tube has ultrahigh specific surface area and spiral conversion structure, can be combined with other raw materials in the lens material to the maximum degree as a polyether type TPU resin loading body, the modification of the carbon nano spiral tube firstly adopts heat treatment activation, and then is sent into a coupling agent during heat preservation so as to ensure that the coupling agent fully permeates the carbon nano spiral tube, so that the modification is more thorough, and the modified carbon nano spiral tube has amphipathy, can be both organic and inorganic, so that the raw materials are gathered in the carbon nano spiral tube for full combination reaction; the added modified linear low-density polyethylene can make up the properties of elasticity, strength and the like of the material, the added functional auxiliary agent aims at improving the properties of ultraviolet resistance, bacteria resistance and the like of the material, and meanwhile, the fused magnesia fine powder and the needle-shaped wollastonite powder are filled in the material, so that the overall performance of the material is further improved; fig. 2 to 3 show that the contact angle of the front surface of the anti-poison lens is 74.7 degrees, the contact angle of the back surface of the anti-poison lens is 78 degrees, considering that the front surface has certain convexity and the back surface has certain concavity, the contact angles of the front surface and the back surface are approximately the same, the probability that the hydrophilic film is contained in the anti-poison lens is not large, the anti-poison lens has good air on the anti-poison mask goggles, the disappearance speeds of the front surface and the back surface are the same, and the water drops on the two surfaces slide along the same path in the water drop test on the front surface and the back.
Drawings
FIG. 1 is an infrared spectrum of the inventive gas defense lens;
FIG. 2 is a front contact angle test chart of the anti-virus lens of the present invention;
FIG. 3 is a test chart of the reverse contact angle of the anti-virus lens of the present invention;
FIG. 4 is a graph of the mechanical properties of the inventive anti-virus lens.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the gas mask elastic lens comprises the following raw materials in parts by weight:
60 parts of modified polyether type TPU resin, 15 parts of modified linear low-density polyethylene, 5 parts of dibenzyl maleate, 4 parts of activated alumina, 2 parts of antioxidant and 2 parts of functional auxiliary agent;
the modification method of the modified polyether type TPU resin comprises the following steps: adding polyether type TPU resin into a reaction kettle, firstly heating the reaction kettle to 250 ℃, preserving heat for 10min, then adding chlorinated polyether accounting for 5% of the total amount of the polyether type TPU resin into the reaction kettle, firstly stirring the mixture at a rotating speed of 100r/min for 30min, then adding a modified carbon nano spiral tube accounting for 20% of the total amount of the polyether type TPU resin, continuing stirring the mixture at a rotating speed of 300r/min for 1h, and finishing stirring.
The modification method of the modified carbon nanocircuit tube in the embodiment comprises the steps of firstly heating the carbon nanocircuit tube from room temperature to 210 ℃ at the speed of 1 ℃/min, then preserving heat for 20min, immediately placing the carbon nanocircuit tube in a coupling agent KH560 for reaction for 20min after the heat preservation is finished, cooling a reaction solution to room temperature, and then centrifuging and washing the reaction solution.
The preparation method of the modified linear low density polyethylene of this example is to wash the linear low density polyethylene with deionized water for 1 time, then dry, then melt, add the modifier and the grafting agent into the linear low density polyethylene, then stir at a rotation speed of 200r/min for 20min, then cool to room temperature and adopt60CorAnd (5) carrying out irradiation treatment by a radiation source, wherein the total radiation dose is 2kGy, the irradiation time is 1h, and the irradiation treatment is finished.
The modifier of the embodiment comprises the following raw materials in parts by weight: 30 parts of polymethyl methacrylate and 10 parts of polyethylene oxide.
The grafting agent of this example was a maleic anhydride graft compatibilizer.
The antioxidant used in this example was 1, 4-dibenzyloxybenzene.
The preparation method of the functional additive of the embodiment includes the steps of firstly adding the nano titanium dioxide, the dibenzoyl peroxide and the propylene glycol into a magnetic stirrer, then adding the fused magnesia fine powder and the needle-shaped wollastonite powder, firstly increasing the rotating speed to 200r/min, stirring for 20min, after the stirring is finished, adding the epoxy resin, continuing stirring for 3h, and after the stirring is finished, obtaining the functional additive.
The method for preparing the gas mask elastic lens comprises the following steps:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the raw materials in the step one into a high-speed stirrer, stirring at the rotating speed of 300r/min for 30min, sending the mixture into a double-screw extruder after stirring, heating the mixture to 145 ℃, then heating the mixture until the materials are molten, sending the molten materials into a mold, and cooling and forming the molten materials to obtain the gas mask elastic lens.
Example 2:
the gas mask elastic lens comprises the following raw materials in parts by weight:
75 parts of modified polyether type TPU resin, 25 parts of modified linear low-density polyethylene, 9 parts of dibenzyl maleate, 7 parts of activated alumina, 5 parts of antioxidant and 6 parts of functional assistant;
the modification method of the modified polyether type TPU resin comprises the following steps: adding polyether type TPU resin into a reaction kettle, firstly heating the reaction kettle to 300 ℃, preserving heat for 20min, then adding chlorinated polyether accounting for 5% of the total amount of the polyether type TPU resin into the reaction kettle, firstly stirring the mixture at a rotating speed of 200r/min for 40min, then adding a modified carbon nano spiral tube accounting for 30% of the total amount of the polyether type TPU resin, continuing stirring the mixture at a rotating speed of 600r/min for 2h, and finishing stirring.
The modification method of the modified carbon nanocircuit tube comprises the steps of heating the carbon nanocircuit tube from room temperature to 210 ℃ at the speed of 3 ℃/min, then preserving heat for 30min, immediately placing the carbon nanocircuit tube in a coupling agent KH560 for reaction for 30min after the heat preservation is finished, cooling the reaction liquid to room temperature, centrifuging and washing with water.
The preparation method of the modified linear low density polyethylene of this example is to wash the linear low density polyethylene with deionized water for 3 times, then dry, then melt, add the modifier and the grafting agent into the linear low density polyethylene, then stir for 30min at a rotation speed of 260r/min, then cool to room temperature and adopt60CorAnd (5) performing radiation treatment by using a radiation source, wherein the total radiation dose is 2-6kGy, the radiation time is 2h, and the radiation treatment is finished.
The modifier of the embodiment comprises the following raw materials in parts by weight: 40 parts of polymethyl methacrylate and 20 parts of polyethylene oxide.
The grafting agent of this example was a maleic anhydride graft compatibilizer.
The antioxidant in this example was 4,4' -diaminodiphenylmethane.
The preparation method of the functional additive of the embodiment includes the steps of firstly adding the nano titanium dioxide, the dibenzoyl peroxide and the propylene glycol into a magnetic stirrer, then adding the fused magnesia fine powder and the needle-shaped wollastonite powder, firstly increasing the rotating speed to 400r/min, stirring for 30min, after the stirring is finished, adding the epoxy resin, continuing stirring for 6h, and after the stirring is finished, obtaining the functional additive.
The method for preparing the gas mask elastic lens comprises the following steps:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the raw materials in the step one into a high-speed stirrer, stirring at the rotating speed of 500r/min for 40min, sending the mixture into a double-screw extruder after stirring, heating to the extrusion temperature of 155 ℃, then heating to melt the materials, sending the materials into a mold, and cooling and forming to obtain the gas mask elastic lens.
Example 3:
the gas mask elastic lens comprises the following raw materials in parts by weight:
67.5 parts of modified polyether type TPU resin, 20 parts of modified linear low-density polyethylene, 7 parts of dibenzyl maleate, 6.5 parts of activated alumina, 3.5 parts of antioxidant and 4 parts of functional assistant;
the modification method of the modified polyether type TPU resin comprises the following steps: adding polyether type TPU resin into a reaction kettle, firstly heating the reaction kettle to 275 ℃, preserving heat for 15min, then adding chlorinated polyether accounting for 5% of the total amount of the polyether type TPU resin into the reaction kettle, firstly stirring the mixture at a rotating speed of 150/min for 35min, then adding a modified carbon nano spiral tube accounting for 25% of the total amount of the polyether type TPU resin, continuing stirring the mixture at a rotating speed of 450r/min for 1.5h, and finishing stirring.
The modification method of the modified carbon nanocircuit tube comprises the steps of firstly heating the carbon nanocircuit tube from room temperature to 210 ℃ at the speed of 2 ℃/min, then preserving heat for 25min, immediately placing the carbon nanocircuit tube in a coupling agent KH560 for reaction for 25min after the heat preservation is finished, cooling a reaction solution to room temperature, centrifuging and washing with water.
The preparation method of the modified linear low density polyethylene of this example is to wash the linear low density polyethylene with deionized water for 2 times, then dry, then melt, add the modifier and the grafting agent into the linear low density polyethylene, then stir at 230r/min for 25min, then cool to room temperature and use60CorAnd (5) carrying out irradiation treatment by a radiation source, wherein the total radiation dose is 4kGy, the irradiation time is 1.5h, and the irradiation treatment is finished.
The modifier of the embodiment comprises the following raw materials in parts by weight: 35 parts of polymethyl methacrylate and 15 parts of polyethylene oxide.
The grafting agent of this example was a maleic anhydride graft compatibilizer.
The antioxidant in this example is 3-hydroxybutyraldehyde-2-naphthylamine.
The preparation method of the functional additive of the embodiment includes the steps of firstly adding the nano titanium dioxide, the dibenzoyl peroxide and the propylene glycol into a magnetic stirrer, then adding the fused magnesia fine powder and the needle-shaped wollastonite powder, firstly increasing the rotating speed to 300r/min, stirring for 25min, after the stirring is finished, adding the epoxy resin, continuing stirring for 4.5h, and after the stirring is finished, obtaining the functional additive.
The method for preparing the gas mask elastic lens comprises the following steps:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the raw materials in the step one into a high-speed stirrer, stirring at the rotating speed of 400r/min for 35min, after stirring, feeding the mixture into a double-screw extruder, heating to the extrusion temperature of 150 ℃, then heating to melt the materials, feeding the materials into a mold, and cooling and forming to obtain the gas mask elastic lens.
Comparative example 1:
the materials and preparation process were substantially the same as those of example 3, except that the polyether type TPU resin was not modified.
Comparative example 2:
the materials and preparation process were substantially the same as those of example 3 except that no modified linear low density polyethylene was added.
Comparative example 3:
the material and preparation process are basically the same as those of example 3, except that the elastic lens of the gas mask in the market is adopted.
The test results of examples 1 to 3 and comparative examples 1 to 3 are shown in Table 1
Figure BDA0002266615970000071
TABLE 1
As can be seen from the mechanical property diagram of the anti-virus lens in FIG. 4, the tensile strength of example 1 is 30.78MPa, and the tensile strength of example 2 is 36.63 MPa; as can be seen from Table 1, the material of the present invention has excellent elongation at break, tensile strength and Shore hardness, and also has the properties of UV resistance, aging resistance, cold resistance, etc.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The elastic lens of the gas mask is characterized by comprising the following raw materials in parts by weight:
60-75 parts of modified polyether type TPU resin, 15-25 parts of modified linear low-density polyethylene, 5-9 parts of dibenzyl maleate, 4-7 parts of activated alumina, 2-5 parts of antioxidant and 2-6 parts of functional auxiliary agent;
the modification method of the modified polyether type TPU resin comprises the following steps: adding the polyether type TPU resin into a reaction kettle, firstly heating the reaction kettle to 250-300 ℃, preserving the temperature for 10-20min, then adding chlorinated polyether accounting for 5% of the total amount of the polyether type TPU resin into the reaction kettle, firstly stirring the chlorinated polyether at the rotating speed of 200r/min for 30-40min, then adding a modified carbon nano spiral tube accounting for 20-30% of the total amount of the polyether type TPU resin, continuously stirring the mixture for 1-2h at the rotating speed of 600r/min for 300-600r/min, and finishing stirring.
2. The polymer composite material for manufacturing photo frames according to claim 1, wherein the gas mask elastic lens comprises the following raw materials in parts by weight:
64-72 parts of modified polyether type TPU resin, 17-23 parts of modified linear low-density polyethylene, 6-8 parts of dibenzyl maleate, 5-6 parts of activated alumina, 3-4 parts of antioxidant and 3-5 parts of functional auxiliary agent.
3. The elastic lens of a gas mask according to claim 1, wherein the elastic lens of a gas mask comprises the following raw materials in parts by weight:
67.5 parts of modified polyether type TPU resin, 20 parts of modified linear low-density polyethylene, 7 parts of dibenzyl maleate, 6.5 parts of activated alumina, 3.5 parts of antioxidant and 4 parts of functional assistant.
4. The elastic lens for the gas mask according to claim 1, wherein the modification method of the modified carbon nanocoil comprises the steps of heating the carbon nanocoil from room temperature to 210 ℃ at a speed of 1-3 ℃/min, then preserving heat for 20-30min, immediately placing the carbon nanocoil in a coupling agent KH560 for reaction for 20-30min after the heat preservation is finished, cooling the reaction solution to room temperature, centrifuging and washing with water.
5. The elastic lens for a respirator as set forth in claim 1, wherein the modified LLDPE is prepared by washing the LLDPE 1-3 times with DI water, drying, melting, adding modifier and grafting agent, stirring at a speed of 200-260r/min for 20-30min, cooling to room temperature, and cooling60CorAnd (4) performing radiation treatment by using a radiation source, wherein the total radiation dose is 2-6kGy, the radiation time is 1-2h, and the radiation treatment is finished.
6. The respirator elastic lens according to claim 5, wherein the modifier comprises the following raw materials in parts by weight: 30-40 parts of polymethyl methacrylate and 10-20 parts of polyoxyethylene.
7. The respirator elastic lens according to claim 5, wherein the grafting agent is a maleic anhydride graft compatibilizer.
8. The elastic respirator lens according to claim 1, wherein the antioxidant is one or more of 1, 4-dibenzyloxybenzene, 4' -diaminodiphenylmethane, and 3-hydroxybutyraldehyde-2-naphthylamine.
9. The elastic lens for a gas mask as claimed in claim 1, wherein the functional assistant is prepared by adding nano titanium dioxide, dibenzoyl peroxide and propylene glycol into a magnetic stirrer, adding fused magnesia fine powder and acicular wollastonite powder, increasing the rotation speed to 200-400r/min, stirring for 20-30min, adding epoxy resin after stirring, continuing to stir for 3-6h, and obtaining the functional assistant after stirring.
10. A method of making the respirator elastic lens of any one of claims 1-9, comprising the steps of:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the raw materials in the step one into a high-speed stirrer, stirring at the rotating speed of 500r/min for 30-40min, after stirring, sending into a double-screw extruder, wherein the extrusion temperature is 155 ℃ at 145-.
CN201911090174.0A 2019-11-08 2019-11-08 Gas mask elastic lens and preparation method thereof Pending CN110982251A (en)

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