CN106117948B - A kind of high ventilative water absorbing properties composition and preparation method thereof and molded article - Google Patents
A kind of high ventilative water absorbing properties composition and preparation method thereof and molded article Download PDFInfo
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- CN106117948B CN106117948B CN201610486887.9A CN201610486887A CN106117948B CN 106117948 B CN106117948 B CN 106117948B CN 201610486887 A CN201610486887 A CN 201610486887A CN 106117948 B CN106117948 B CN 106117948B
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of 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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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention discloses a kind of high ventilative water absorbing properties composition and preparation method thereof and molded articles, the height is breathed freely water absorbing properties composition, composition comprising ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin, the weight ratio of the ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin are as follows: 0.01-30%:0.01-30%:40-99.98%, wherein, ammonium polyphosphate modifying is that gamma-aminopropyl-triethoxy-silane coupling agent is carried out surface to ammonium polyphosphate to be modified；Modified polypropylene resin is that maleic anhydride is carried out surface to polypropylene to be modified to obtain the final product.The ventilative and water absorbing properties of composition and its molded article obtained of the invention have significant raising, with good mouldability and fire-retardant water-retaining property performance, higher heat distortion temperature and photostability, molded article processing procedure obtained is easy, low environment is polluted, and had wide range of applications.
Description
Technical field
The present invention relates to field of material technology, specifically a kind of high ventilative water absorbing properties composition and preparation method thereof and at
Type product, the molded article make many non-breathable water absorbing properties materials have the ventilative water absorbing properties of excellent height.
Background technique
Ammonium polyphosphate is also known as ammonium polyphosphate or polycondensation ammonium phosphate (abbreviation APP), nineteen sixty-five Monsanto Chemicals first
It succeeds in developing.Ammonium polyphosphate is non-toxic and tasteless, does not generate etchant gas, has certain hygroscopicity, it is a kind of property that thermal stability is high
The excellent non-halogen fire retardant of energy.Ammonium polyphosphate has the function of expandable flame retardant, therefore is more advantageous to drop cigarette and anti-dripping melt, although being solid
Body, but be easy to disperse in polyalcohol.The phosphorus content 0.01%-50% of ammonium polyphosphate, nitrogenous is 0.01%-50%.Polyphosphoric acid
Ammonium is white crystals or amorphous fine powder.
Water-absorbing resin is also known as super strength water absorbent or high water-retaining agent (abbreviation SAP) is to grow up at the end of the sixties in last century.
North research institute of United States Department of Agriculture succeeds in developing first within 1961.Water-absorbing resin is non-toxic and tasteless, does not generate solidification to blood of human body.
Water-absorbing resin has very strong water absorbing capacity, can absorb its own weight hundreds times, even thousands of times of water, and rate of water absorption is very
Fastly, and there is excellent water retention property, thin-film sheet and plate is made, there are certain ventilative and water absorbing properties.Water-absorbing resin
For white-amorphous attritive powder, amount containing sodium is 0.01%-30%.Water-absorbing resin is a kind of novel absorbent of function admirable, protects
Water, gas permeable material.
Polypropylene (PP) is one kind with fastest developing speed in five big general-purpose plastics, is widely used in industry and daily life.
By blending, the compound mechanical property that can further improve PP, its application field is widened.The key of MODIFIED PP is to increase its pole
Property, improve PP and inorganic particulate or the compatibility of other polar polymers.With polar maleic anhydride (MAH) graft PP,
Polarity branch appropriate is introduced on macromolecular main chain, improves the deficiency in PP performance, and the one kind for expanding its application range is simple
And effective method.However the presence of methyl reduces its Chain Flexibility and brittleness increase in PP.In addition, PP is molten
It is big and temperature sensitive to change latent heat, temperature, which must control, when molding could obtain optimal mechanical property in a relatively narrow range
Energy；The viscosity of PP is affected by shearing force, thus injection pressure can have a huge impact its mobility to change
Its final mechanical property；Dwell time and dwell pressure also influence the mechanical property of PP product to a certain extent.Three oxidations two
Antimony, magnesium hydroxide, aluminium hydroxide, pentaerythrite, silicon systems, bromine system, ammonium polyphosphate, polyacrylic acid (salt system), polyacrylate (sodium
Salt) the ventilative and water imbibition of polymer can be improved in the organic and inorganic synthetic polymer such as system and natural mineral fillers.Wherein poly- phosphorus
Sour ammonium is a kind of natural minerals, and polyacrylate (sodium salt) system is a kind of synthetic organic polymers (water-absorbing resin).Ammonium polyphosphate
By increasing dispersibility, compatibility, boundary in PP after gamma-aminopropyl-triethoxy-silane coupling agent surface modification treatment
Face binding force reduces and reunites, and the water-absorbing resin after drying process enhances the ventilative and water imbibition of composite material jointly.
Summary of the invention
The purpose of the present invention is to provide one kind to have good mouldability and fire-retardant water-retaining property performance, higher thermal deformation
Ventilative water absorbing properties composition of the height of temperature and photostability and preparation method thereof and molded article, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of high ventilative water absorbing properties composition comprising ammonium polyphosphate modifying (M-APP), water-absorbing resin (SAP) and is modified
The composition of acrylic resin (M-PP), the weight ratio of the ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin
Are as follows: 0.01-30%:0.01-30%:40-99.98%, wherein ammonium polyphosphate modifying is by gamma-aminopropyl-triethoxy-silane
It is modified that coupling agent carries out surface to ammonium polyphosphate；Modified polypropylene resin is that maleic anhydride is carried out surface to polypropylene to change
Property to obtain the final product.
As a further solution of the present invention: the ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin according to
Mass percent are as follows: 0.01-10%:0.01-10%:80-99.98%.
As a further solution of the present invention: the ammonium polyphosphate modifying (M-APP) is prepared by following method:
A) gamma-aminopropyl-triethoxy-silane coupling agent and ammonium polyphosphate are weighed, and gamma-aminopropyl-triethoxy-silane is even
Joining agent and ammonium polyphosphate according to mass percent is 0.01-15%:85-99.99%；
B) by the obtained gamma-aminopropyl-triethoxy-silane coupling agent of step a) and ammonium polyphosphate in 25 DEG C of -80 DEG C of mixing
1-10 hours, obtain mixture；
C) mixture is 1-10 hours dry in 25-80 DEG C of air dry oven, obtain ammonium polyphosphate modifying.
As a further solution of the present invention: gamma-aminopropyl-triethoxy-silane coupling agent and poly- in the step a)
Ammonium phosphate is 0.01-10%:90-99.99% according to mass percent.
As a further solution of the present invention: the ammonium polyphosphate is a kind of minerals that Quadrafos contains nitrogen, phosphorus,
The chemical molecular skeleton symbol of the ammonium polyphosphate: (NH4)(n+2)PnO(3n+1), n is 10-50 in the ammonium polyphosphate, and ammonium polyphosphate is
White crystals or amorphous fine powder.
As a further solution of the present invention: when preparing ammonium polyphosphate modifying, by gamma-aminopropyl-triethoxy-silane idol
Joining agent and ammonium polyphosphate at 25 DEG C after -80 DEG C of mixing 1-10 hours, the ammonium polyphosphate modifying after drying is handled with ultrasonic oscillation,
Diafiltration product dries ammonium polyphosphate modifying close to after neutrality to filtrate again.
As a further solution of the present invention: the water-absorbing resin is polyacrylate sodium salt system, the water-absorbing resin
In a kind of minerals containing sodium, the chemical molecular skeleton symbol of the water-absorbing resin: [C3H3O2Na] n, n is in the water-absorbing resin
10-60, water-absorbing resin are white-amorphous attritive powder.
As a further solution of the present invention: the water-absorbing resin also contains polyacrylic acid in addition to polypropylene sodium salt system
At least one of salt system.
As a further solution of the present invention: the preparation method of the modified polypropylene resin the following steps are included:
A) maleic anhydride and polypropylene are weighed, and maleic anhydride and polypropylene are according to mass percent
0.05-20%:80-99.95%；
B) the obtained maleic anhydride of step a) and polypropylene are squeezed out in double screw extruder, the twin-screw extrusion
The head temperature of machine is 140-150 DEG C, and area's temperature of the double screw extruder is 100-150 DEG C, the twin-screw extrusion
Bis- area's temperature of Ji is 150-180 DEG C, three 150-180 DEG C of area's temperature of the double screw extruder, the double screw extruder
Engine speed be 95r/min, be water-cooled after mixing, it is dry, then be granulated with pelleter, obtain resin compound particle；
C) the resin compound particle for obtaining the step b) is 1-10 hours dry in 25-80 DEG C of air dry oven, obtains
To modified polypropylene resin.
As a further solution of the present invention: maleic anhydride and polypropylene are according to quality percentage in the step a)
Than for 0.05-10%:90-99.95%.
In implementing the present invention, it may, if using lamination method blow molding, ammonium polyphosphate modifying, water-absorbing resin and change
Property acrylic resin composition melt viscosity it is too small or too big, ammonium polyphosphate modifying, water-absorbing resin and modified polypropene
The melt strength of the composition of resin will be too low accordingly or too high, is all unfavorable for spray coating method molding in this way, brushes at thin
It is membranaceous be drawn into lamination shape.Water-soluble or melt viscosity is viscous in 25 ± 1 DEG C of measurements and capillary with constant stress dark type viscometer
Degree meter is measured in 230 ± 1 DEG C.
As a further solution of the present invention: also including inert additwe or inert filler.
It is a further object of the present invention to provide a kind of preparation methods of high ventilative water absorbing properties composition, including following step
It is rapid:
A) gamma-aminopropyl-triethoxy-silane coupling agent is carried out surface to ammonium polyphosphate to be modified, obtains modified polyphosphoric acid
Ammonium；
B) water-absorbing resin is firstly placed on drying in air dry oven, forced air drying temperature is 70 DEG C, and the forced air drying time is 3
Hour, it then puts and dries in a vacuum drying oven, vacuum drying temperature is 70 DEG C, and vacuum drying time is 3 hours, vacuum degree-
0.1MPa；
C) maleic anhydride is carried out surface to polypropylene to be modified, obtains modified polypropylene resin；
D) modification for obtaining ammonium polyphosphate modifying, step b) water-absorbing resin and the step c) that the step a) is obtained
Acrylic resin 150-290 DEG C mixing 1-20 minutes, obtain high ventilative water absorbing properties composition；The step a), step b)
It is limited with step c) without time sequencing.
It is yet another object of the invention to provide a kind of preparation method of the molded article of high ventilative water absorbing properties composition, according to
Step a), step b), step c) and step d) in the secondary preparation process for carrying out above-mentioned high ventilative water absorbing properties composition, the step
It is rapid d) further comprising the steps of later；The ventilative water absorbing properties composition of the height obtained after step d) is manufactured using forming method
Molded article；The forming method is at least one of following: lamination method blow molding, the molding of coextrusion casting film, co-extrusion
Blow molding, plate compression moulding, hollow blow molding, injection moulding out.
Between two above-mentioned steps, some steps for being mixed into others not mentioned substance in above-mentioned steps can be inserted
Suddenly, or in any one above-mentioned step, mixed substance can also include others not mentioned substance in above-mentioned steps.
Above-mentioned molding method is implemented with using general extrusion equipment, simple and easy to be conducive to commercially produce.
It can be to hold with machine-shaping by the composition of the ammonium polyphosphate modifying of above method preparation, water-absorbing resin and modified polypropylene resin
The molded article of the shapes such as device, film, plate or tubulose, it is ventilative which can effectively improve polymer composite
It pollutes with water absorbing properties, the key property for keeping original polymer base material, processing procedure simplicity, low environment, and has wide range of applications.Institute
The polymer composite stated can be aliphatic or aromatic hydrocarbon quasi polymer.
The composition of ammonium polyphosphate modifying of the invention, water-absorbing resin and modified polypropylene resin is squeezed when squeezing out processing
Machine screw rod can be polyethylene, polyvinyl chloride-type and isolation-type (barrier type), preferably polyvinyl chloride-type and barrier out
Type.The preferred 15rpm of extruder screw revolving speed (rpm is exactly rev/min) is between 80rpm, between more preferable 20rpm to 60rpm.
The present invention also provides the molded articles according to above-mentioned method manufacture, and molded article can be container, film, plate
Or the shapes such as tubulose.
Compared with prior art, the beneficial effects of the present invention are:
The ventilative and water absorbing properties of composition and its molded article obtained of the invention have significant raising, have good
Good mouldability and fire-retardant water-retaining property performance, higher heat distortion temperature and photostability, relative to polypropylene and modified poly- third
Olefine resin all has significant improvement.Molded article tool obtained effectively improves the permeability and water suction of polymer composite
Performance, the key property for keeping original polymer base material, processing procedure are easy, low environment is polluted, and had wide range of applications.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
The modification of ammonium polyphosphate
100g ammonium polyphosphate and 200g ethyl alcohol are weighed, the mixed solution that mass fraction is 50% is configured to, is stirred with glass bar
It mixes and glacial acetic acid adjusting pH value is added thereto and then pour into obtained mixed solution in there-necked flask to 3-5, and add thereto
Enter 1g gamma-aminopropyl-triethoxy-silane coupling agent KH-550, then after be put into mechanical stirring 2h or so in 70 DEG C of waters bath with thermostatic control, stir
Mix rate 240rpm.By obtained mixed solution vacuum filtration and diafiltration product pours into culture dish to filtrate close to after neutrality,
The culture dish for filling mixed solution is put into in 70 DEG C of air dry oven drying to constant weight again, obtains ammonium polyphosphate modifying.
99.917g is weighed as with electronic balance.
Embodiment 2
Water-absorbing resin is dry
20g water-absorbing resin is weighed to be firstly placed in air dry oven dry (temperature 70 C, 3 hours time) and then be placed on vacuum
In drying box dry (temperature 70 C, the time 3 hours, vacuum degree -0.1MPa)
19.317g is weighed as with electronic balance.
Embodiment 3
Maleic anhydride graft polypropylene
1. weighing maleic anhydride 30g, pure PP1000g.
2. being squeezed out with double screw extruder, the head temperature of extruder is 140 DEG C -150 DEG C, and area's temperature of extruder is
180 DEG C, two area's temperature be 170 DEG C, 170 DEG C of three area's temperature, squeeze out machine host revolving speed be 95r/min.
3. after obtained extrusion product is water-cooled, is dried after squeezing out, then being granulated with pelleter, maleic acid is obtained
Anhydride modification acrylic resin (PP-g-MAH).
Embodiment 4
The processing and preparation of sample
1. weighing raw material by table 1 respectively, table 1 is the raw material proportioning using 1-3 of the embodiment of the present invention.
2. using mixer mixing after component 1 is mixed, mixing time 5min, temperature is 165 DEG C, torque 7.5Nm, is turned
Speed is 60min/s.
3. it is after mixing that material is cooling, then crushed in pulverizer.
4. smashed material is pressed into thin-film sheet and plate respectively with vulcanizing press, temperature is 180 DEG C, vulcanization
Deflate 30s after 8min, then pressure maintaining 5min, is finally cold-pressed 3min and takes out.
5. thin-film sheet is cut into 10 × 10 × 0.2mm film sample by the specification of gas permeability tester, by water suction batten
Specification by plate cutting at 76.2 × 25.4 × 3.2mm, every group of 4 samples.
6. component 2-7 repeats above step and carries out sample preparation.
Composition is made using the raw material proportioning of 1-3 of the embodiment of the present invention in table 1
The Air permenbility and water absorption rate of PP is respectively 163.06cm3/m20.1MPa and 0 for 24 hours.After PP is grafted MAH, PP-g-
The Air permenbility and water absorption rate of MAH is respectively 146.94cm3/m20.1MPa and 0.01% for 24 hours, compared with PP, Air permenbility is reduced
16.12cm3/m20.1MPa for 24 hours, water absorption rate increase to 0.01%.It absorbs water when adding 30% ammonium polyphosphate modifying and 6%
After resin, the Air permenbility and water absorption rate of PP-g-MAH/M-APP/SAP composite material are increased separately to 340.56cm3/m2·24h·
0.1MPa and 0.34%, in summary result can be found, as the addition of ammonium polyphosphate modifying and water-absorbing resin makes breathing freely for PP
Very strong raising has been obtained with water absorbing properties.
Embodiment 5
The ventilative water absorbing properties composition preparation of height
Change what the ammonium polyphosphate modifying that embodiment 1 obtains and water-absorbing resin and embodiment 3 that embodiment 2 obtains obtained
Property acrylic resin mixed according to the weight ratio of 30:6:64, the mixed temperature be 180 DEG C, the mixed time
For 5min, obtain high ventilative water absorbing properties composition, using vulcanizing press molding machine by the ventilative water absorbing properties composition of height at
Type goes out about 10 × 10 × 0.2mm thin-film sheet and 76.2 × 25.4 × 3.2mm plate.
The present invention is measured the permeability of obtained thin-film sheet, surveys to the water absorbing properties of obtained plate
It is fixed, weighing processing, the calculation formula of relative water-intake rate are as follows: phase are dried after sample being impregnated in water 24 hours under the conditions of 90 DEG C
To water absorption rate=(sample mass-original sample quality after processing)/original sample quality × 100%.Material gas permeable performance and suction
Water performance test methods use GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS K7126-A and ASTM
Method described in D570-98, the results are shown in Table 2, and table 2 is the gas permeability for the composition that the embodiment of the present invention and comparative example obtain
It can be with water absorbing properties test result.
Embodiment 6
High ventilative water absorbing properties composition is prepared using the technical solution of embodiment 5, is formed using vulcanizing press
Acrylic resin is molded about 10 × 10 × 0.2mm thin-film sheet and 76.2 × 25.4 × 3.2mm plate by machine.Different
It is that the weight ratio of ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin is 0.01:0.01:99.98 in the present embodiment,
Mixed temperature is 290 DEG C, and the mixed time is 1 minute.
The present invention is measured the ventilative and water absorbing properties of obtained thin-film sheet and plate, material gas permeable and water imbibition
Energy test method uses GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS K7126-A and ASTM D570-
Method described in 98, the results are shown in Table 2, and table 2 is the ventilative and water suction for the composition that the embodiment of the present invention and comparative example obtain
The performance test results.
Embodiment 7
High ventilative water absorbing properties composition is prepared using the technical solution of embodiment 5, is formed using vulcanizing press
Acrylic resin is molded about 10 × 10 × 0.2mm thin-film sheet and 76.2 × 25.4 × 3.2mm plate by machine, different
It is that the weight ratio of ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin is 25:14:61, mixed temperature in the present embodiment
Degree is 200 DEG C, and the mixed time is 15 minutes.
The present invention is measured the ventilative and water absorbing properties of obtained thin-film sheet and plate, material gas permeable and water imbibition
Energy test method uses GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS K7126-A and ASTM D570-
Method described in 98, the results are shown in Table 2, and table 2 is the ventilative and water suction for the composition that the embodiment of the present invention and comparative example obtain
The performance test results.
Embodiment 8
High ventilative water absorbing properties composition is prepared using the technical solution of embodiment 5, is formed using vulcanizing press
Acrylic resin is molded about 10 × 10 × 0.2mm thin-film sheet and 76.2 × 25.4 × 3.2mm plate by machine, different
It is that the weight ratio of ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin is 35:18:47, mixed temperature in the present embodiment
Degree is 250 DEG C, and the mixed time is 10 minutes.
The present invention is measured the ventilative and water absorbing properties of obtained thin-film sheet and plate, material gas permeable and water imbibition
Energy test method uses GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS K7126-A and ASTM D570-
Method described in 98, the results are shown in Table 2, and table 2 is the ventilative and water suction for the composition that the embodiment of the present invention and comparative example obtain
The performance test results.
Comparative example 1
It is thin that acrylic resin using vulcanizing press molding machine is molded into about 10 × 10 × 0.2mm by acrylic resin
Film sheet and 76.2 × 25.4 × 3.2mm plate, by the Property requirements of material requested, the acrylic resin is China Petroleum
Acrylic resin (PP) S1003 of Maoming branch company of work limited liability company.Their ventilative and water absorbing properties are measured,
Material gas permeable and water absorbing properties test method use GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS
Method described in K7126-A and ASTM D570-98, the results are shown in Table 2, and table 2 is that the embodiment of the present invention and comparative example obtain
The ventilative and water absorbing properties test result of composition.
Comparative example 2
Modified polypropylene resin preparation
The modified polypropene that embodiment 3 obtains is molded into about 10 × 10 × 0.2mm using vulcanizing press molding machine
Thin-film sheet and 76.2 × 25.4 × 3.2mm plate are measured their ventilative and water absorbing properties, and the results are shown in Table 2,
Material gas permeable and water absorbing properties test method use GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS
Method described in K7126-A and ASTM D570-98, table 2 be the ventilative of the composition that the embodiment of the present invention and comparative example obtain and
Water absorbing properties test result.
Comparative example 3
The composition preparation of nylon66 fiber, modified polypropylene resin
It carries out modified polypropylene resin that embodiment 3 is prepared, nylon66 fiber to be mixed with nylon66 fiber, polypropylene alloy
Nylon66 fiber, polypropylene alloy material are molded about 76.2 × 25.4 × 3.2mm plate using vulcanizing press molding machine by material
Material, by the Property requirements of material requested.Its water absorbing properties are measured, the results are shown in Table 2, the test of material water absorbing properties
Method is using described in GB 1038, ASTM D1434,2556 ISO, ISO 15105-1, JIS K7126-A and ASTM D570-98
Method, table 2 is the ventilative and water absorbing properties test result for the composition that the embodiment of the present invention and comparative example obtain.
The sheet material that 2 5-8 of the embodiment of the present invention of table and comparative example 1-2 are obtained is breathed freely and water absorbing properties test result
As it can be seen from table 1 thin-film sheet and plate is ventilative and water absorbing properties, 5 composition sample of embodiment ventilative and
Water suction improve multiplying power be respectively comparative example 1 2.08 and ∞ times, be 2.31 and 34 times of comparative example 2, be comparative example 3 water suction improvement
5.7 times of multiplying power.
As it can be seen from table 1 the composition of ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin is to thin-film sheet
There is significant raising with the ventilative and water absorbing properties of plate, make to have good mouldability and fire-retardant water-retaining property performance, higher
Heat distortion temperature and photostability, all there is significant improvement relative to polypropylene and modified polypropylene resin.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (11)
1. a kind of high ventilative water absorbing properties composition, which is characterized in that include ammonium polyphosphate modifying, water-absorbing resin and modified poly- third
The composition of olefine resin, the weight ratio of the ammonium polyphosphate modifying, water-absorbing resin and modified polypropylene resin are as follows: 0.01-
30%:0.01-30%:40-99.98%, wherein ammonium polyphosphate modifying is by gamma-aminopropyl-triethoxy-silane coupling agent pair
It is modified that ammonium polyphosphate carries out surface；Modified polypropylene resin is that maleic anhydride is carried out surface to polypropylene to be modified to obtain the final product.
2. high ventilative water absorbing properties composition according to claim 1, which is characterized in that the ammonium polyphosphate modifying, suction
Water-resin and modified polypropylene resin are according to mass percent are as follows: 0.01-10%:0.01-10%:80-99.98%.
3. high ventilative water absorbing properties composition according to claim 1, which is characterized in that the ammonium polyphosphate modifying is
It is prepared by following method:
A) gamma-aminopropyl-triethoxy-silane coupling agent and ammonium polyphosphate, and gamma-aminopropyl-triethoxy-silane coupling agent are weighed
With ammonium polyphosphate according to mass percent be 0.01-15%:85-99.99%；
B) by the obtained gamma-aminopropyl-triethoxy-silane coupling agent of step a) and ammonium polyphosphate in 25 DEG C of -80 DEG C of mixing 1-10
Hour, obtain mixture；
C) mixture is 1-10 hours dry in 25-80 DEG C of air dry oven, obtain ammonium polyphosphate modifying.
4. high ventilative water absorbing properties composition according to claim 3, which is characterized in that γ-ammonia in the step a)
Propyl-triethoxysilicane coupling agent and ammonium polyphosphate are 0.01-10%:90-99.99% according to mass percent.
5. high ventilative water absorbing properties composition according to claim 3, which is characterized in that the ammonium polyphosphate is poly- phosphorus
Hydrochlorate contains a kind of minerals of nitrogen, phosphorus, the chemical molecular skeleton symbol of the ammonium polyphosphate: (NH4)(n+2)PnO(3n+1), the poly- phosphorus
N is 10-50 in sour ammonium, and ammonium polyphosphate is white crystals or amorphous fine powder.
6. high ventilative water absorbing properties composition according to claim 1, which is characterized in that the water-absorbing resin is poly- third
Olefin(e) acid ester sodium salt system, a kind of minerals containing sodium in the water-absorbing resin, the chemical molecular skeleton symbol of the water-absorbing resin:
[C3H3O2Na] n, n is 10-60 in the water-absorbing resin, and water-absorbing resin is white-amorphous attritive powder.
7. high ventilative water absorbing properties composition according to claim 1, which is characterized in that the modified polypropylene resin
Preparation method the following steps are included:
A) maleic anhydride and polypropylene are weighed, and maleic anhydride and polypropylene are 0.05- according to mass percent
20%:80-99.95%；
B) the obtained maleic anhydride of step a) and polypropylene are squeezed out in double screw extruder, the double screw extruder
Head temperature is 140-150 DEG C, and area's temperature of the double screw extruder is 100-150 DEG C, the double screw extruder
Two area's temperature are 150-180 DEG C, three 150-180 DEG C of area's temperature of the double screw extruder, the master of the double screw extruder
Machine revolving speed is 95r/min, is water-cooled after mixing, dry, then is granulated with pelleter, and resin compound particle is obtained；
C) the resin compound particle for obtaining the step b) is 1-10 hours dry in 25-80 DEG C of air dry oven, is changed
Property acrylic resin.
8. high ventilative water absorbing properties composition according to claim 7, which is characterized in that maleic in the step a)
Dicarboxylic anhydride and polypropylene are 0.05-10%:90-99.95% according to mass percent.
9. high ventilative water absorbing properties composition according to claim 1, which is characterized in that also comprising inert additwe or
Inert filler.
The preparation method of water absorbing properties composition 10. a kind of height as described in claim 1-9 is any is breathed freely, which is characterized in that
Include the following steps:
A) gamma-aminopropyl-triethoxy-silane coupling agent is carried out surface to ammonium polyphosphate to be modified, obtains ammonium polyphosphate modifying；
B) water-absorbing resin is firstly placed on drying in air dry oven, forced air drying temperature is 70 DEG C, and the forced air drying time is 3 small
When, it then puts and dries in a vacuum drying oven, vacuum drying temperature is 70 DEG C, and vacuum drying time is 3 hours, vacuum degree-
0.1MPa；
C) maleic anhydride is carried out surface to polypropylene to be modified, obtains modified polypropylene resin；
D) modification poly- third for obtaining ammonium polyphosphate modifying, step b) water-absorbing resin and the step c) that the step a) is obtained
Olefine resin 150-290 DEG C mixing 1-20 minutes, obtain high ventilative water absorbing properties composition；The step a), step b) and step
It is rapid c) to be limited without time sequencing.
The preparation method of the molded article of water absorbing properties composition 11. a kind of height such as claim 10 is breathed freely, which is characterized in that
Step a), step b), step c) and step d) in the preparation process of above-mentioned high ventilative water absorbing properties composition are successively carried out, it is described
It is further comprising the steps of after step d)；The ventilative water absorbing properties composition system of height for being obtained step d) later using forming method
Make molded article；The forming method is at least one of following: lamination method blow molding, coextrusion casting film form, altogether
Extrusion and blow molding, plate compression moulding, hollow blow molding, injection moulding.
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| CN107163310A (en) * | 2017-06-07 | 2017-09-15 | 常州苏达欧包装材料有限公司 | A kind of halogen-free fireproof rubber and preparation method thereof |
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