CN109233047A - A kind of ethylene closed cell cystosepiment - Google Patents
A kind of ethylene closed cell cystosepiment Download PDFInfo
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Abstract
The invention discloses a kind of ethylene closed cell cystosepiments, belong to building material technical field.Carbon black, graphene oxide, humic acid mixing and ball milling are obtained ball milling material by the present invention, then by ball milling material and chitosan liquid mixing and ball milling, are subsequently added into glutaraldehyde, continue ball milling, and charing crushes to get modified filler；Low density polyethylene (LDPE) mixing and crosslinking agent are kneaded, it is subsequently added into organic siliconresin, chloroplatinic acid, modified filler, zinc stearate and modified meerschaum are kneaded, it is subsequently added into azodicarbonamide and vulcanizing agent is kneaded, saltcake, ethyl orthosilicate, sulfur foam is then added, demoulding is to get ethylene closed cell cystosepiment.The ethylene closed cell cystosepiment of technical solution of the present invention preparation has the characteristics that excellent mechanical property and porosity are high, is to have broad prospects in the development of building material technology industry.
Description
Technical field
The invention discloses a kind of ethylene closed cell cystosepiments, belong to building material technical field.
Background technique
Ethylene closed cell cystosepiment is a kind of domestic novel joint seal material, is widely used to bridge joint seal
Plate, hydraulic engineering dykes and dams, Hu Tan, baffle wall style, slope protection expansion joint joint plate；Water power, thermal power project, water tower bottom waterstop seam
Plate；The joint filling board of subsiding crack for building, frame structure；Domestic water factory and sewage treatment plant, pond sealing joint filling board；It runs on airport
The joint plate in road；Harbour, harbour concrete joint plate；Water joint plate is crossed in water hole, tunnel concrete；Subway, underpass are mixed
The sealing joint plate of solidifying soil.Ethylene closed cell cystosepiment has the characteristics that following 1. density is small, and response rate is high, has independent air bubble knot
Structure.2. absorptivity is low, barrier performance is good.3. the organic solvents such as acidproof alkali salt corrode, ageing-resistant performance is excellent.4. when high temperature
It does not trickle, when low temperature expands.The production of ethylene closed cell cystosepiment only need to be cut into required pattern with scissors, and general worker is equal
It can operate, and pitch plank needs professional carpenter to make using woodworking machinery, and asphalt-coating is needed after completing, required pitch needs again
It is placed on to heat in container and is boiled into liquid, in heating process, and generate a large amount of pernicious gases, cause the pollution to ambient atmosphere, and
Pollution condition is just not present in ethylene closed cell cystosepiment.
Ethylene closed cell cystosepiment can be converted into volume transport, and light-weight, and for timber than cumbersome, timber need to be from strange land tune
Fortune, increases the freight charges of timber, timber price is caused to go up, the price of pitch plank is caused to go up therewith, and coplanar accumulation second
Alkene closed-cell foam plate many lighter than timber, so ethylene closed cell cystosepiment facilitates many than Wood Transportation.Polyethylene closes
Hole cystosepiment is more easy for installation than pitch plank, and pitch board surface is coated with pitch, and when installation is easy to make to be coated with pitch on clothes,
And pitch is not easy to wash, such case is just not present in ethylene closed cell cystosepiment, and ethylene closed cell cystosepiment is first installed to be installed afterwards
, when first installing, ethylene closed cell cystosepiment need to be only tightly attached on wooden model or on punching block, and pitch template need to first pacify
Dress is generally 2~2.5cm in pitch plank in addition, and rigidity not enough, is easily deformed, is just not present with ethylene closed cell cystosepiment
Such case.
And traditional ethylene closed cell cystosepiment porosity is low and the bad disadvantage of mechanical property, brings not to practical application
Just, therefore, how to improve the shortcomings that conventional polyethylene closed-cell foam plate porosity is low and mechanical property can not be promoted further, with
The ethylene closed cell cystosepiment for obtaining more high combination property is that it is promoted and is applied to broader field, meets industrial production
Demand urgent problem to be solved.
Summary of the invention
The present invention solves the technical problem of: for traditional ethylene closed cell cystosepiment porosity is low and mechanical property
The shortcomings that can not capable of further being promoted, provide a kind of ethylene closed cell cystosepiment.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of ethylene closed cell cystosepiment, is made of the raw material of following parts by weight:
60~80 parts of low density polyethylene (LDPE)
10~15 parts of azodicarbonamide
10~20 parts of organic siliconresin
0.3~0.5 part of chloroplatinic acid
2~3 parts of crosslinking agent
10~20 parts of modified filler
1~2 part of zinc stearate
10~20 parts of saltcake
5~8 parts of ethyl orthosilicate
3~5 parts of vulcanizing agent
10~20 parts of modified meerschaum
The preparation step of the ethylene closed cell cystosepiment are as follows:
(1) each raw material is weighed by raw material composition；
(2) low density polyethylene (LDPE) mixing and crosslinking agent are kneaded, are subsequently added into organic siliconresin, chloroplatinic acid, modified filler, tristearin
Sour zinc and modified meerschaum are kneaded, and are subsequently added into azodicarbonamide and vulcanizing agent is kneaded, saltcake, positive silicic acid second is then added
Ester, sulfur foam demould to get ethylene closed cell cystosepiment.
The organic siliconresin is methylsiloxane resin, any one in ethyl organic siliconresin or aryl organic siliconresin
Kind.
The crosslinking agent is in peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester or the peroxidating 2 ethyl hexanoic acid tert-butyl ester
Any one.
The preparation process of the modified filler are as follows: by carbon black, graphene oxide, humic acid mixing and ball milling obtains ball milling material, connects
By ball milling material and chitosan liquid mixing and ball milling, be subsequently added into glutaraldehyde, continue ball milling, charing crushes to get modified filler.
The vulcanizing agent is sulphur, any one in sulfur monochloride or benzoyl peroxide.
The preparation process of the modified meerschaum are as follows: mix sepiolite with dopamine solution 1:10~1:20 in mass ratio
Ultrasound filters, dry, obtains single treatment sepiolite, according to parts by weight, by 20~30 parts of single treatment sepiolites, 8~10 parts
Carbomer940,30~40 parts of deionized water constant temperature are stirred, filtering, dry to get modified meerschaum.
Step (2) described compounding conditions are as follows: temperature is 110~120 DEG C, and mixing time is 5~10min.
Step (2) the sulfur foam condition are as follows: temperature is 126~156 DEG C, and the sulfur foam time is 30~50min.
The beneficial effects of the present invention are:
The present invention passes through modified meerschaum, saltcake and ethyl orthosilicate, firstly, in modified meerschaum preparation process, sepiolite
It is impregnated by dopamine solution, so that sepiolite is dispersed in dopamine solution, and forms sepiolite fibre beam, while sepiolite
Fibre bundle adsorption dopamine, then by the way that carbomer is added, the carboxyl of carbomer strand can be with dopamine molecule chain
Carboxyl reaction so that dopamine protonate so that sepiolite fibre beam surface is positively charged, due to mutually arranging between like charges
Reprimand, so that sepiolite fibre beam can be realized good dispersion, so that the mechanical property of system gets a promotion, secondly, using
In the process, as temperature increases, azodicarbonamide decomposes to give off gas pore-creating, and the diffusion of gas in system so that occur a large amount of
Through-hole, meanwhile, saltcake is heated dehydration, and the water released is reacted with the ethyl orthosilicate in system, the silica of generation and
Ethyl alcohol, silica separate the through-hole in system, form closed pore, while the heated volatilization of ethyl alcohol, and carry part generation
Silica diffusion, avoids a large amount of silica plug-holes generated, and advantageously forms continuous closed pore, so that the closed pore of system
Rate gets a promotion, and again, the moisture in system makes modified meerschaum be dispersed into sepiolite fibre beam, sepiolite fibre beam again
It is dispersed in duct, plays good supporting role, while so that porosity is promoted, the mechanical property of system is obtained into one
The promotion of step.
Specific embodiment
Chitosan and water 1:50~1:100 in mass ratio are placed in No. 1 beaker, stir 10~20min with glass bar, it is quiet
After setting swelling, No. 1 beaker being placed in digital display and is tested the speed in constant temperature blender with magnetic force, is 80~85 DEG C in temperature, revolving speed is 300~
Under the conditions of 500r/min, heating stirring dissolves 30~50min, obtains chitosan liquid；According to parts by weight, by 20~30 parts of carbon blacks,
20~30 parts of graphene oxides, 30~40 parts of humic acids are placed in mixing and ball milling in ball mill, obtain ball milling material, then by ball milling material with
Chitosan liquid 1:20~1:30 in mass ratio is placed in 40~60min of mixing and ball milling in ball mill, and penta is then added into ball mill
Dialdehyde continues 40~60min of ball milling, obtains ball milling material, then ball milling material is placed in retort, and with 60~90mL/min rate
It is filled with nitrogen into furnace, under the conditions of temperature is 550~750 DEG C, after carbonizing 1~2h, is down to room temperature with furnace, obtains carbonized material, connect
Carbonized material be placed in pulverizer crush, cross the sieve of 120 mesh to get modified filler；It is by sepiolite and mass concentration
The dopamine solution of 2.6mg/mL 1:10~1:20 in mass ratio is placed in No. 2 beakers, and No. 2 beakers are placed in ultrasonic disperse instrument
In, under the conditions of supersonic frequency is 55~75kHz, after mixing 40~60min of ultrasound, dispersion liquid is obtained, then dispersion liquid is filtered, obtained
Filter cake is then placed in baking oven by filter cake, dry to constant weight under the conditions of temperature is 105~110 DEG C, obtains single treatment Hai Pao
Stone, according to parts by weight, by 20~30 parts of single treatment sepiolites, 8~10 parts of carbomer940s, 30~40 parts of deionized waters are set
In single-necked flask, and single-necked flask is placed in digital display and is tested the speed in constant temperature blender with magnetic force, is 40~60 DEG C in temperature, revolving speed is
Under the conditions of 300~500r/min, constant temperature is stirred 40~60min, obtains mixed liquor, then filters mixed liquor, obtain filter residue, connects
Filter residue is placed in baking oven, under the conditions of temperature is 105~110 DEG C, it is dry to constant weight to get modified meerschaum；By weight
Number meter, successively takes 60~80 parts of low density polyethylene (LDPE)s, 10~15 parts of azodicarbonamides, 10~20 parts of organic siliconresins, and 0.3
~0.5 part of chloroplatinic acid, 2~3 parts of crosslinking agents, 10~20 parts of modified fillers, 1~2 part of zinc stearate, 10~20 parts of saltcake, 5~8
Part ethyl orthosilicate, 3~5 parts of vulcanizing agents and 10~20 parts of modified meerschaums, low density polyethylene (LDPE) mixing and crosslinking agent are placed in
In muller, under the conditions of temperature is 110~120 DEG C, mixing time is 5~10min, and organosilicon is then added into muller
Resin, chloroplatinic acid, modified filler, zinc stearate and modified meerschaum, under the conditions of temperature is 110~120 DEG C, mixing 5~
Azodicarbonamide and vulcanizing agent is then added in 10min into muller, under the conditions of temperature is 110~120 DEG C, mixing 5~
10min, then to saltcake, ethyl orthosilicate are added in muller, 2~3min of prefoam obtains prefoam block, then by prefoam
Block is placed in vulcanizing press, under the conditions of temperature is 126~156, after 30~50min of sulfur foam, is demoulded to get polyethylene
Closed-cell foam plate.The organic siliconresin is methylsiloxane resin, is appointed in ethyl organic siliconresin or aryl organic siliconresin
It anticipates one kind.The crosslinking agent is times in peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester or the peroxidating 2 ethyl hexanoic acid tert-butyl ester
It anticipates one kind.The vulcanizing agent is sulphur, any one in sulfur monochloride or benzoyl peroxide.
Chitosan and water 1:100 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, after standing swelling,
No. 1 beaker is placed in digital display to test the speed in constant temperature blender with magnetic force, in temperature be 85 DEG C, under the conditions of revolving speed is 500r/min, heating
Stirring and dissolving 50min obtains chitosan liquid；According to parts by weight, by 30 parts of carbon blacks, 30 parts of graphene oxides, 40 parts of humic acids are set
The mixing and ball milling in ball mill obtains ball milling material, and then ball milling material and chitosan liquid 1:30 in mass ratio are placed in ball mill and mixed
Ball milling 60min is closed, glutaraldehyde is then added into ball mill, continues ball milling 60min, obtains ball milling material, be then placed in ball milling material
In retort, and nitrogen is filled with into furnace with 90mL/min rate, under the conditions of temperature is 750 DEG C, after carbonizing 2h, is down to furnace
Room temperature obtains carbonized material, then carbonized material is placed in pulverizer and is crushed, and crosses the sieve of 120 mesh to get modified filler；By sepiolite
It is placed in No. 2 beakers with mass concentration for the dopamine solution 1:20 in mass ratio of 2.6mg/mL, and No. 2 beakers is placed in ultrasound
In separating apparatus, under the conditions of supersonic frequency is 75kHz, after mixing ultrasound 60min, dispersion liquid is obtained, then dispersion liquid is filtered, must filtered
Filter cake is then placed in baking oven by cake, dry to constant weight under the conditions of temperature is 110 DEG C, single treatment sepiolite is obtained, by weight
Number meter is measured, by 30 parts of single treatment sepiolites, 10 parts of carbomer940s, 40 parts of deionized waters are placed in single-necked flask, and will
Single-necked flask is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of revolving speed is 500r/min, constant temperature is stirred
Mix mixing 60min, obtain mixed liquor, then filter mixed liquor, obtain filter residue, then filter residue is placed in baking oven, in temperature be 110
Under the conditions of DEG C, drying is to constant weight to get modified meerschaum；According to parts by weight, 80 parts of low density polyethylene (LDPE)s, 15 parts of idols are successively taken
Nitrogen diformamide, 20 parts of organic siliconresins, 0.5 part of chloroplatinic acid, 3 parts of crosslinking agents, 20 parts of modified fillers, 2 parts of zinc stearates, 20 parts
Saltcake, 8 parts of ethyl orthosilicates, 5 parts of vulcanizing agents and 20 parts of modified meerschaums, low density polyethylene (LDPE) mixing and crosslinking agent are placed in mixed
Practice in machine, under the conditions of temperature is 120 DEG C, organic siliconresin, chlorine platinum is then added in mixing time 10min into muller
Acid, modified filler, zinc stearate and modified meerschaum are kneaded 10min, then into muller under the conditions of temperature is 120 DEG C
Azodicarbonamide and vulcanizing agent is added, under the conditions of temperature is 120 DEG C, is kneaded 10min, then to awns is added in muller
Nitre, ethyl orthosilicate, prefoam 3min obtain prefoam block, and then prefoam block is placed in vulcanizing press, are in temperature
Under the conditions of 156, after sulfur foam 50min, demould to get ethylene closed cell cystosepiment.The organic siliconresin is that methyl is organic
Silicone resin.The crosslinking agent is peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester.The vulcanizing agent is sulphur.
Chitosan and water 1:100 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, after standing swelling,
No. 1 beaker is placed in digital display to test the speed in constant temperature blender with magnetic force, in temperature be 85 DEG C, under the conditions of revolving speed is 500r/min, heating
Stirring and dissolving 50min obtains chitosan liquid；According to parts by weight, by 30 parts of carbon blacks, 30 parts of graphene oxides, 40 parts of humic acids are set
The mixing and ball milling in ball mill obtains ball milling material, and then ball milling material and chitosan liquid 1:30 in mass ratio are placed in ball mill and mixed
Ball milling 60min is closed, glutaraldehyde is then added into ball mill, continues ball milling 60min, obtains ball milling material, be then placed in ball milling material
In retort, and nitrogen is filled with into furnace with 90mL/min rate, under the conditions of temperature is 750 DEG C, after carbonizing 2h, is down to furnace
Room temperature obtains carbonized material, then carbonized material is placed in pulverizer and is crushed, and crosses the sieve of 120 mesh to get modified filler；By sepiolite
It is placed in No. 2 beakers with mass concentration for the dopamine solution 1:20 in mass ratio of 2.6mg/mL, and No. 2 beakers is placed in ultrasound
In separating apparatus, under the conditions of supersonic frequency is 75kHz, after mixing ultrasound 60min, dispersion liquid is obtained, then dispersion liquid is filtered, must filtered
Filter cake is then placed in baking oven by cake, dry to constant weight under the conditions of temperature is 110 DEG C, single treatment sepiolite is obtained, by weight
Number meter is measured, by 30 parts of single treatment sepiolites, 10 parts of carbomer940s, 40 parts of deionized waters are placed in single-necked flask, and will
Single-necked flask is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of revolving speed is 500r/min, constant temperature is stirred
Mix mixing 60min, obtain mixed liquor, then filter mixed liquor, obtain filter residue, then filter residue is placed in baking oven, in temperature be 110
Under the conditions of DEG C, drying is to constant weight to get modified meerschaum；According to parts by weight, 80 parts of low density polyethylene (LDPE)s, 15 parts of idols are successively taken
Nitrogen diformamide, 0.5 part of chloroplatinic acid, 3 parts of crosslinking agents, 20 parts of modified fillers, 2 parts of zinc stearates, 20 parts of saltcake, 8 parts of positive silicic acid
Ethyl ester, 5 parts of vulcanizing agents and 20 parts of modified meerschaums, low density polyethylene (LDPE) mixing and crosslinking agent are placed in muller, in temperature
Under the conditions of 120 DEG C, mixing time 10min is then added chloroplatinic acid into muller, modified filler, zinc stearate and changes
Property sepiolite, under the conditions of being 120 DEG C in temperature, be kneaded 10min, azodicarbonamide and vulcanization be then added into muller
Agent is kneaded 10min, then to saltcake, ethyl orthosilicate, prefoam are added in muller under the conditions of temperature is 120 DEG C
3min obtains prefoam block, and then prefoam block is placed in vulcanizing press, under the conditions of temperature is 156, sulfur foam
After 50min, demould to get ethylene closed cell cystosepiment.The crosslinking agent is peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester.Institute
Stating vulcanizing agent is sulphur.
The dopamine solution 1:20 in mass ratio that sepiolite and mass concentration are 2.6mg/mL is placed in No. 2 beakers, and
No. 2 beakers are placed in ultrasonic disperse instrument, under the conditions of supersonic frequency is 75kHz, after mixing ultrasound 60min, obtain dispersion liquid, then
Dispersion liquid is filtered, filter cake is obtained, then filter cake is placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain one
Secondary processing sepiolite, according to parts by weight, by 30 parts of single treatment sepiolites, 10 parts of carbomer940s, 40 parts of deionized waters are set
In single-necked flask, and single-necked flask is placed in digital display and is tested the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, revolving speed is
Under the conditions of 500r/min, constant temperature is stirred 60min, obtains mixed liquor, then filters mixed liquor, obtains filter residue, then by filter residue
It is placed in baking oven, under the conditions of temperature is 110 DEG C, drying is to constant weight to get modified meerschaum；According to parts by weight, it successively takes
80 parts of low density polyethylene (LDPE)s, 15 parts of azodicarbonamides, 20 parts of organic siliconresins, 0.5 part of chloroplatinic acid, 3 parts of crosslinking agents, 2 parts hard
Resin acid zinc, 20 parts of saltcake, 8 parts of ethyl orthosilicates, 5 parts of vulcanizing agents and 20 parts of modified meerschaums, by low density polyethylene (LDPE) mixing and
Crosslinking agent is placed in muller, and under the conditions of temperature is 120 DEG C, mixing time 10min is then added into muller organic
Silicone resin, chloroplatinic acid, zinc stearate and modified meerschaum are kneaded 10min, then to muller under the conditions of temperature is 120 DEG C
Middle addition azodicarbonamide and vulcanizing agent are kneaded 10min, then to awns is added in muller under the conditions of temperature is 120 DEG C
Nitre, ethyl orthosilicate, prefoam 3min obtain prefoam block, and then prefoam block is placed in vulcanizing press, are in temperature
Under the conditions of 156, after sulfur foam 50min, demould to get ethylene closed cell cystosepiment.The organic siliconresin is that methyl is organic
Silicone resin.The crosslinking agent is peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester.The vulcanizing agent is sulphur.
Chitosan and water 1:100 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, after standing swelling,
No. 1 beaker is placed in digital display to test the speed in constant temperature blender with magnetic force, in temperature be 85 DEG C, under the conditions of revolving speed is 500r/min, heating
Stirring and dissolving 50min obtains chitosan liquid；According to parts by weight, by 30 parts of carbon blacks, 30 parts of graphene oxides, 40 parts of humic acids are set
The mixing and ball milling in ball mill obtains ball milling material, and then ball milling material and chitosan liquid 1:30 in mass ratio are placed in ball mill and mixed
Ball milling 60min is closed, glutaraldehyde is then added into ball mill, continues ball milling 60min, obtains ball milling material, be then placed in ball milling material
In retort, and nitrogen is filled with into furnace with 90mL/min rate, under the conditions of temperature is 750 DEG C, after carbonizing 2h, is down to furnace
Room temperature obtains carbonized material, then carbonized material is placed in pulverizer and is crushed, and crosses the sieve of 120 mesh to get modified filler；By sepiolite
It is placed in No. 2 beakers with mass concentration for the dopamine solution 1:20 in mass ratio of 2.6mg/mL, and No. 2 beakers is placed in ultrasound
In separating apparatus, under the conditions of supersonic frequency is 75kHz, after mixing ultrasound 60min, dispersion liquid is obtained, then dispersion liquid is filtered, must filtered
Filter cake is then placed in baking oven by cake, dry to constant weight under the conditions of temperature is 110 DEG C, single treatment sepiolite is obtained, by weight
Number meter is measured, by 30 parts of single treatment sepiolites, 10 parts of carbomer940s, 40 parts of deionized waters are placed in single-necked flask, and will
Single-necked flask is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of revolving speed is 500r/min, constant temperature is stirred
Mix mixing 60min, obtain mixed liquor, then filter mixed liquor, obtain filter residue, then filter residue is placed in baking oven, in temperature be 110
Under the conditions of DEG C, drying is to constant weight to get modified meerschaum；According to parts by weight, 80 parts of low density polyethylene (LDPE)s, 15 parts of idols are successively taken
Nitrogen diformamide, 20 parts of organic siliconresins, 0.5 part of chloroplatinic acid, 3 parts of crosslinking agents, 20 parts of modified fillers, 2 parts of zinc stearates, 8 parts
Ethyl orthosilicate, 5 parts of vulcanizing agents and 20 parts of modified meerschaums, low density polyethylene (LDPE) mixing and crosslinking agent are placed in muller,
Under the conditions of temperature is 120 DEG C, organic siliconresin is then added in mixing time 10min into muller, and chloroplatinic acid is modified
Filler, zinc stearate and modified meerschaum are kneaded 10min under the conditions of temperature is 120 DEG C, are then added into muller even
Nitrogen diformamide and vulcanizing agent are kneaded 10min, then to positive silicic acid second is added in muller under the conditions of temperature is 120 DEG C
Ester, prefoam 3min obtain prefoam block, and then prefoam block is placed in vulcanizing press, under the conditions of temperature is 156, sulphur
After changing foaming 50min, demould to get ethylene closed cell cystosepiment.The organic siliconresin is methylsiloxane resin.The friendship
Connection agent is peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester.The vulcanizing agent is sulphur.
Chitosan and water 1:100 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, after standing swelling,
No. 1 beaker is placed in digital display to test the speed in constant temperature blender with magnetic force, in temperature be 85 DEG C, under the conditions of revolving speed is 500r/min, heating
Stirring and dissolving 50min obtains chitosan liquid；According to parts by weight, by 30 parts of carbon blacks, 30 parts of graphene oxides, 40 parts of humic acids are set
The mixing and ball milling in ball mill obtains ball milling material, and then ball milling material and chitosan liquid 1:30 in mass ratio are placed in ball mill and mixed
Ball milling 60min is closed, glutaraldehyde is then added into ball mill, continues ball milling 60min, obtains ball milling material, be then placed in ball milling material
In retort, and nitrogen is filled with into furnace with 90mL/min rate, under the conditions of temperature is 750 DEG C, after carbonizing 2h, is down to furnace
Room temperature obtains carbonized material, then carbonized material is placed in pulverizer and is crushed, and crosses the sieve of 120 mesh to get modified filler；By sepiolite
It is placed in No. 2 beakers with mass concentration for the dopamine solution 1:20 in mass ratio of 2.6mg/mL, and No. 2 beakers is placed in ultrasound
In separating apparatus, under the conditions of supersonic frequency is 75kHz, after mixing ultrasound 60min, dispersion liquid is obtained, then dispersion liquid is filtered, must filtered
Filter cake is then placed in baking oven by cake, dry to constant weight under the conditions of temperature is 110 DEG C, single treatment sepiolite is obtained, by weight
Number meter is measured, by 30 parts of single treatment sepiolites, 10 parts of carbomer940s, 40 parts of deionized waters are placed in single-necked flask, and will
Single-necked flask is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of revolving speed is 500r/min, constant temperature is stirred
Mix mixing 60min, obtain mixed liquor, then filter mixed liquor, obtain filter residue, then filter residue is placed in baking oven, in temperature be 110
Under the conditions of DEG C, drying is to constant weight to get modified meerschaum；According to parts by weight, 80 parts of low density polyethylene (LDPE)s, 15 parts of idols are successively taken
Nitrogen diformamide, 20 parts of organic siliconresins, 0.5 part of chloroplatinic acid, 3 parts of crosslinking agents, 20 parts of modified fillers, 2 parts of zinc stearates, 20 parts
Saltcake, 5 parts of vulcanizing agents and 20 parts of modified meerschaums, low density polyethylene (LDPE) mixing and crosslinking agent are placed in muller, in temperature
Under the conditions of 120 DEG C, mixing time 10min is then added organic siliconresin into muller, chloroplatinic acid, modified filler, firmly
Resin acid zinc and modified meerschaum are kneaded 10min under the conditions of temperature is 120 DEG C, and two formyl of azo is then added into muller
Amine and vulcanizing agent are kneaded 10min, then to saltcake is added in muller, prefoam 3min is obtained under the conditions of temperature is 120 DEG C
Prefoam block is then placed in vulcanizing press by prefoam block, under the conditions of temperature is 156, after sulfur foam 50min, is taken off
Mould is to get ethylene closed cell cystosepiment.The organic siliconresin is methylsiloxane resin.The crosslinking agent is peroxidating (2-
Ethylhexyl) carbonic acid tert-pentyl ester.The vulcanizing agent is sulphur.
Chitosan and water 1:100 in mass ratio are placed in No. 1 beaker, stir 20min with glass bar, after standing swelling,
No. 1 beaker is placed in digital display to test the speed in constant temperature blender with magnetic force, in temperature be 85 DEG C, under the conditions of revolving speed is 500r/min, heating
Stirring and dissolving 50min obtains chitosan liquid；According to parts by weight, by 30 parts of carbon blacks, 30 parts of graphene oxides, 40 parts of humic acids are set
The mixing and ball milling in ball mill obtains ball milling material, and then ball milling material and chitosan liquid 1:30 in mass ratio are placed in ball mill and mixed
Ball milling 60min is closed, glutaraldehyde is then added into ball mill, continues ball milling 60min, obtains ball milling material, be then placed in ball milling material
In retort, and nitrogen is filled with into furnace with 90mL/min rate, under the conditions of temperature is 750 DEG C, after carbonizing 2h, is down to furnace
Room temperature obtains carbonized material, then carbonized material is placed in pulverizer and is crushed, and crosses the sieve of 120 mesh to get modified filler；By weight
Number meter successively takes 80 parts of low density polyethylene (LDPE)s, 15 parts of azodicarbonamides, 20 parts of organic siliconresins, 0.5 part of chloroplatinic acid, 3 parts of friendships
Join agent, 20 parts of modified fillers, 2 parts of zinc stearates, 20 parts of saltcake, 8 parts of ethyl orthosilicates, 5 parts of vulcanizing agents and 20 parts of sepiolites, it will
Low density polyethylene (LDPE) mixing and crosslinking agent are placed in muller, under the conditions of temperature is 120 DEG C, mixing time 10min, then
Organic siliconresin, chloroplatinic acid, modified filler, zinc stearate and sepiolite are added into muller, in temperature be 120 DEG C of conditions
Under, it is kneaded 10min, azodicarbonamide and vulcanizing agent are then added into muller, under the conditions of temperature is 120 DEG C, is kneaded
10min, then to saltcake, ethyl orthosilicate are added in muller, prefoam 3min obtains prefoam block, then by prefoam block
It is placed in vulcanizing press, under the conditions of temperature is 156, after sulfur foam 50min, demoulds to get ethylene closed cell cystosepiment.
The organic siliconresin is methylsiloxane resin.The crosslinking agent is peroxidating (2- ethylhexyl) carbonic acid tert-pentyl ester.It is described
Vulcanizing agent is sulphur.
Comparative example: the polyethylene foam sheet of Foshan material production Co., Ltd production.
Example 1 to the resulting ethylene closed cell cystosepiment of example 6 and comparative example product are subjected to performance detection, it is specific to detect
Method is as follows:
Using the omnipotent mechanics machine of UTM-5000 microcomputer controlled electronic, mechanical property is measured referring to GB/T8813 and GB/T8812
Energy；Porosity is measured using mercury injection apparatus (Autopore9500).
Specific testing result is as shown in table 1:
The 1 specific testing result of ethylene closed cell cystosepiment of table
| Detection project | Compressive strength/MPa | Bending strength/MPa | Porosity/% |
| Example 1 | 0.89 | 16.8 | 96.6 |
| Example 2 | 0.78 | 16.2 | 92.3 |
| Example 3 | 0.74 | 15.7 | 87.1 |
| Example 4 | 0.71 | 14.6 | 85.2 |
| Example 5 | 0.66 | 14.2 | 84.6 |
| Example 6 | 0.63 | 12.3 | 84.1 |
| Comparative example | 0.55 | 6.9 | 76.8 |
By 1 testing result of table it is found that the ethylene closed cell cystosepiment of technical solution of the present invention preparation has excellent mechanical property
The high feature with porosity, has broad prospects in the development of building material technology industry.
Claims (8)
1. a kind of ethylene closed cell cystosepiment, it is characterised in that: be made of the raw material of following parts by weight:
60~80 parts of low density polyethylene (LDPE)
10~15 parts of azodicarbonamide
10~20 parts of organic siliconresin
0.3~0.5 part of chloroplatinic acid
2~3 parts of crosslinking agent
10~20 parts of modified filler
1~2 part of zinc stearate
10~20 parts of saltcake
5~8 parts of ethyl orthosilicate
3~5 parts of vulcanizing agent
10~20 parts of modified meerschaum
The preparation step of the ethylene closed cell cystosepiment are as follows:
(1) each raw material is weighed by raw material composition；
(2) low density polyethylene (LDPE) mixing and crosslinking agent are kneaded, are subsequently added into organic siliconresin, chloroplatinic acid, modified filler, tristearin
Sour zinc and modified meerschaum are kneaded, and are subsequently added into azodicarbonamide and vulcanizing agent is kneaded, saltcake, positive silicic acid second is then added
Ester, sulfur foam demould to get ethylene closed cell cystosepiment.
2. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: the organic siliconresin has for methyl
Any one in machine silicone resin, ethyl organic siliconresin or aryl organic siliconresin.
3. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: the crosslinking agent is peroxidating (2-
Ethylhexyl) any one in carbonic acid tert-pentyl ester or the peroxidating 2 ethyl hexanoic acid tert-butyl ester.
4. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: the preparation process of the modified filler
Are as follows: by carbon black, graphene oxide, humic acid mixing and ball milling obtains ball milling material, then by ball milling material and chitosan liquid mixing and ball milling,
It is subsequently added into glutaraldehyde, continues ball milling, charing crushes to get modified filler.
5. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: the vulcanizing agent is sulphur, a chlorine
Change any one in sulphur or benzoyl peroxide.
6. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: the preparation of the modified meerschaum
Journey are as follows: sepiolite is mixed into ultrasound with dopamine solution 1:10~1:20 in mass ratio, is filtered, it is dry, obtain single treatment Hai Pao
Stone, according to parts by weight, by 20~30 parts of single treatment sepiolites, 8~10 parts of carbomer940s, 30~40 parts of deionized water perseverances
Temperature is stirred, filtering, dry to get modified meerschaum.
7. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: step (2) described compounding conditions are as follows:
Temperature is 110~120 DEG C, and mixing time is 5~10min.
8. a kind of ethylene closed cell cystosepiment according to claim 1, it is characterised in that: step (2) the sulfur foam item
Part are as follows: temperature is 126~156 DEG C, and the sulfur foam time is 30~50min.
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