CN109897315A - A kind of preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material - Google Patents
A kind of preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material Download PDFInfo
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Abstract
The present invention relates to composite material or high molecular foam material fields, particularly relate to a kind of preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material.Specifically disclose a kind of preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material, for the low problem of existing polyvinyl alcohol foam material mechanical strength, the present invention using in polyvinyl alcohol the PP-g-MAH micro nanometer fiber of shaped in situ and polyvinyl alcohol as chief component, add foaming agent and crosslinking agent, polyvinyl alcohol foam composite material is prepared, can be made up for each other's deficiencies and learn from each other using composite material, generate the mechanical performance that the advantages of synergistic effect effectively raises foamed material.
Description
Technical field
The present invention relates to composite material or high molecular foam material fields, particularly relate to a kind of maleated polypropylene micro-nano
Rice fiber/polyvinyl alcohol foam material preparation method.
Background technique
Foamed material has many advantages, such as lightweight, heat-resisting, cheap, in industry, agricultural, packing business, transportation etc.
It is used widely, China's foamed material is concentrated mainly on polystyrol foam material, PP foam material, polyurethane foam
Material and polyethylene foam-material.Traditional foamed material is not degradable in the environment, causes centainly to pollute to environment.Polyethylene
Alcohol (PVA) is the hydrolysate of polyvinyl acetate, has polyhydroxy structure, nontoxic, there is good cementability, heat resistance, hydrophilic
Property, and it is degradable.Polyvinyl alcohol foam has good wear-resisting weather-proof, degradable, chemical stability, biocompatibility
It is good, but mechanical property is poor, so that polyvinyl alcohol foam material is not widely applied.
With making rapid progress for modern science and technology, extensive and harsh, list of the people to material requirement also increasingly
The material of one component has usually been difficult to meet the needs of society and production.By the heterogeneous, special-shaped, anisotropic of two or more
Material by certain technique groups synthetic composite material, meet people the expected of performance in terms of certain and require, it has also become exploitation
The important channel of high performance material.It may be said that the Composite of material is the main trend of current materials industry development.To overcome bubble
The performance deficiency of foam material can be added some fibre reinforcing material and it is made to be bonded as an entirety, and fiber can play transmitting and carry
The effect of lotus can assign foamed material excellent comprehensive performance.When the diameter of fiber is small arrives sub-micron or nanometer scale, fiber
A series of unusual characteristics are just shown, such as: there is very big large specific surface area, cause surface that can increase with activity, to generate
Skin effect, quantum size effect, small-size effect etc..In addition, nanofiber it is flexible and in terms of also have
There is surprising characteristic.Patent 201410229516.3 is prepared for being made of polyvinyl alcohol composite foam material polyvinyl alcohol and nanofiber
Nanofiber suspension is added in poly-vinyl alcohol solution material, and solvent is evaporated under stirring, and freezing forming freezes dry
The polyvinyl alcohol composite foam material is obtained after dry.But the acquisition of its nano-cellulose used then needs chemistry or enzyme pre-
Processing, need to consume mass energy.Polyvinyl alcohol composite foam material of the present invention is added to nanofiber, enhances foamed material
Waterproofness, to improve the dimensional stability of foam；On the other hand the incompressible intensity and modulus of foam is then increased.
In-situ fibrillation be it is a kind of in process, the incompatible and polymer with different melting points of two kinds of thermodynamics is at it
It is stretched at a temperature of more than fusing point, dispersed phase is formed under the collective effect of elongation flow field and Shearing Flow has certain draw ratio
Fento, a kind of method that fibre reinforced materials is formed in situ.In situ in the research at fine enhancing technology, there is presently no adopt
With the correlative study report of in-situ fibrillation enhancing polyvinyl alcohol foam material.Polypropylene (PP) is a kind of heat of high comprehensive performance
One of plasticity high polymer and widely used commodity polymer material, graft compound is because that can assign functional characteristic, expand
Application field and continue to introduce new.By the means of chemical reaction, on polyethylene molecular chain prepared by grafted maleic anhydride molecule
The dry polypropylene of maleic acid (PP-g-MAH), making product not only has the good workability and other excellent properties of polyethylene, but also has
Maleic anhydride polar molecule can reactivity and highly polar again, be conducive to as coupling agent and reaction modifier uses again, in plastics
Field tool has been widely used.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of high intensity PVA foamed material, specifically disclose a kind of horse
Carry out acid anhydrides polypropylene micro nanometer fiber/polyvinyl alcohol foam material preparation method, for existing polyvinyl alcohol foam material machine
The low problem of tool intensity, the present invention is based on the PP-g-MAH micro nanometer fiber and polyvinyl alcohol of shaped in situ in polyvinyl alcohol
Component part is wanted, foaming agent and crosslinking agent is added, prepares polyvinyl alcohol foam composite material, can be taken mutually using composite material
The mechanical performance that long benefit is short, generates the advantages of synergistic effect effectively raises foamed material.
The technical scheme of the present invention is realized as follows:
A kind of preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material, comprising the following steps:
(1) PVA is weighed by weight, in glycerine investment high-speed mixer, control mixing temperature is 50 DEG C ~ 70 DEG C, and mixing is equal
Plasticising PVA particle is obtained with double screw extruder melt blending and granulation at 150 DEG C ~ 180 DEG C after even；
(2) by plasticising PVA particle and PP-g-MAH(maleic anhydride inoculated polypropylene that step (1) obtains) particle throws by weight
Enter in high-speed mixer, controls mixing temperature at 50 DEG C~70 DEG C, after mixing, at 160 DEG C~180 DEG C with twin-screw extrusion
Machine melt blending squeezes out, while carrying out 4~12 times of stretchings by traction equipment, and the blending material strip pelletizing that then will be stretched obtains
To blended particles；
(3) blended particles that step (2) obtains are add to deionized water, are stirred 2~4 hours at a temperature of 85 DEG C~95 DEG C
Homogeneous solution is formed until polyvinyl alcohol is completely dissolved；
(4) homogeneous solution in step (3) is cooled to 20~30 DEG C, surfactant, foaming agent and starch is then added, stirs
5~10min is mixed, crosslinking agent is added and catalyst stirs evenly to obtain mixture, then pour the mixture into mold, at 50 DEG C
3~5 hours at~80 DEG C, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH nanometers
Fiber/PVA composite foam material.
The parts by weight that PVA, glycerine are put into the step (1) are followed successively by 70~80 parts, 20~30 parts.
In the step (1) PVA be selected from one of PVA1799 or PVA1797, wherein the degree of polymerization 1700 of PVA1799,
Alcoholysis degree 99%, the degree of polymerization 1700 of PVA1797, alcoholysis degree 97%.
The parts by weight of PVA and PP-g-MAH particle are followed successively by 70~95 parts, 5~30 parts, PP-g-MAH in the step (2)
The grafting rate of particle is 1%.
The investment parts by weight of blended particles and deionized water are followed successively by 0.8~1.5 part, 8.5~9.2 in the step (3)
Part.
The addition parts by weight of surfactant, foaming agent and starch are followed successively by 0.1~0.3 part, 0.2 in the step (4)
~0.8 part and 0.1~0.5 part；The additional amount of crosslinking agent and catalyst is 0.1~0.5 part.
Surfactant is one in lauryl sodium sulfate, neopelex and silicone oil in the step (4)
Kind, foaming agent is one of pentane and a fluorine dichloroethanes, and crosslinking agent is one of formaldehyde and glutaraldehyde, and catalyst is
One of hydrochloric acid and sulfuric acid.
The beneficial effects of the present invention are:
1. the present invention using first using PP-g-MAH and by plasticising PVA as raw material, by twin-screw extrusion, stretch preparation with
PVA is matrix, and PP-g-MAH is the composite material of dispersed phase, in the process shearing, the stretching due to being applied by continuous phase
The effects of, PP-g-MAH forms in-situ micro-fibril in PVA matrix；Then PP-g-MAH/PVA composite material is dissolved simultaneously in water
Foaming agent and crosslinking agent is added and prepares PP-g-MAH/PVA composite foam material, PVA is dissolved in water and PP-g-MAH in the process
Insoluble, this makes the micro/nano fiber structure of dispersed phase PP-g-MAH be maintained and achieve the purpose that In-sltu reinforcement.Meanwhile
There is hydrogen bond action between PVA and PP-g-MAH, increase compatibility between the two, PP-g-MAH fento can be made in polyethylene
It is uniformly dispersed in alcohol matrix, and fento diameter can achieve Nano grade, effectively raises polyvinyl alcohol foam material
Mechanical performance.
2. the polymer nanofiber that the present invention is prepared with melt-blending process, at low cost, mild condition is easy
In control, raw material be easy to get, it is environmentally protective, can industrialization large-scale production the advantages that.The foamed material of the application can be applied to
The industries such as drink, food, brewing, pharmacy, chemical, sewage treatment, environmental protection meet clarification purification, are separated by solid-liquid separation, mistake
Filter the requirement of more high-technology condition in recovery system.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Those of ordinary skill in the art's every other embodiment obtained under that premise of not paying creative labor, belongs to this hair
The range of bright protection.
Embodiment 1
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 700 grams of polyvinyl alcohol (PVA1799), 300 grams of glycerine are put into high-speed mixer, control mixing temperature 70
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated at 180 DEG C, obtains plasticised polyvinyl alcohol particle.Take 900 grams
PVA and 100 gram of PP-g-MAH of plasticising is put into high-speed mixer, is controlled mixing temperature at 70 DEG C, is uniformly mixed；At 180 DEG C
It is squeezed out with double screw extruder melt blending, while 6 times of stretchings, the blending material strip that then will be stretched is carried out by traction equipment
Pelletizing.
It takes 8 grams of blended particles to be added in 92 grams of deionized waters, 2 hours is stirred at a temperature of 90 DEG C until polyvinyl alcohol is complete
Fully dissolved forms homogeneous solution；Then solution is cooled to 20 DEG C, 1 gram of neopelex is added, 5 grams of pentane, forms sediment
1 gram of powder, 10min is stirred, 1 gram of glutaraldehyde is added, 1 gram of hydrochloric acid, stirs evenly；It finally pours the mixture into mold, 50
5 hours at DEG C, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH nanofiber/PVA
Composite foam material.The tensile strength of this foamed material is 2.1MPa.
Embodiment 2
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 800 grams of polyvinyl alcohol (PVA1797), 200 grams of glycerine are put into high-speed mixer, control mixing temperature 70
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 165 DEG C, obtains plasticised polyvinyl alcohol
Particle.Take 850 grams of plasticised polyvinyl alcohols and 150 grams of PP-g-MAH to put into high-speed mixer, control mixing temperature at 70 DEG C,
It is uniformly mixed；It is squeezed out at 180 DEG C with double screw extruder melt blending, while 8 times of stretchings is carried out by traction equipment, then will
The blending material strip pelletizing stretched.
It takes 15 grams of blended particles to be added in 85 grams of deionized waters, 4 hours is stirred at a temperature of 85 DEG C until polyvinyl alcohol
Be completely dissolved to form homogeneous solution, solution be then cooled to 30 DEG C, be added 2 grams of neopelex, 7 grams of pentane,
2 grams of starch, 10min is stirred, 2 grams of glutaraldehyde is added, 1.5 grams of hydrochloric acid, stirs evenly；Finally pour the mixture into mold,
5 hours at 50 DEG C, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH Nanowire
Dimension/PVA composite foam material.The tensile strength of this foamed material is 3.9MPa.
Embodiment 3
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 750 grams of polyvinyl alcohol (PVA1797), 250 grams of glycerine are put into high-speed mixer, control mixing temperature 50
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 170 DEG C, obtains plasticised polyvinyl alcohol
Particle.It takes PVA and 150 gram of PP-g-MAH of 850 grams of plasticising to put into high-speed mixer, controls mixing temperature at 50 DEG C, mix
Uniformly；It is squeezed out at 180 DEG C with double screw extruder melt blending, while 10 times of stretchings is carried out by traction equipment, then will drawn
The blending material strip pelletizing extended through.
It takes 10 grams of blended particles to be added in 90 grams of deionized waters, 2 hours is stirred at a temperature of 95 DEG C until polyvinyl alcohol
It is completely dissolved to form homogeneous solution.Solution is cooled to 25 DEG C, 2 parts of lauryl sodium sulfate, a fluorine dichloroethanes 6 is added to it
Part, 3 parts of starch, 8min is stirred, 2 parts of formaldehyde is added, 3 parts of sulfuric acid, stirs evenly；Then it pours the mixture into mold,
4 hours at 70 DEG C, crosslinking, foaming, solidification, take out foaming body sufficiently wash, remove residue, obtain PP-g-MAH nanofiber/
PVA composite foam material.The tensile strength of this foamed material is 4.6 MPa.
Embodiment 4
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 720 grams of polyvinyl alcohol (PVA1799), 280 grams of glycerine are put into high-speed mixer, control mixing temperature 70
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 160 DEG C, obtains plasticised polyvinyl alcohol
Particle.Take 950 grams of plasticised polyvinyl alcohols and 50 grams of PP-g-MAH to put into high-speed mixer, control mixing temperature at 70 DEG C,
It is uniformly mixed；It is squeezed out at 170 DEG C with double screw extruder melt blending, while 4 times of stretchings is carried out by traction equipment, then will
The blending material strip pelletizing stretched.
It takes 11 grams of blended particles to be added in 89 grams of deionized waters, 2 hours is stirred at a temperature of 95 DEG C until polyvinyl alcohol
It is completely dissolved to form homogeneous solution；Solution is cooled to 27 DEG C, 2 parts of silicone oil, 7 parts of a fluorine dichloroethanes, starch 2.5 is added to it
Part, 7min is stirred, 2 parts of formaldehyde is added, 2 parts of sulfuric acid, stirs evenly；Then it pours the mixture into mold, 4.5 at 65 DEG C
Hour, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, it is compound to obtain PP-g-MAH nanofiber/PVA
Foamed material.The tensile strength of this foamed material is 3.2 MPa.
Embodiment 5
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 760 grams of polyvinyl alcohol (PVA1797), 240 grams of glycerine are put into high-speed mixer, control mixing temperature 60
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 170 DEG C, obtains plasticised polyvinyl alcohol
Particle.Take 700 grams of plasticised polyvinyl alcohols and 300 grams of PP-g-MAH to put into high-speed mixer, control mixing temperature at 70 DEG C,
It is uniformly mixed；It is squeezed out at 190 DEG C with double screw extruder melt blending, while 12 times of stretchings is carried out by traction equipment, then
The blending material strip pelletizing that will be stretched.
It takes 12 grams of blended particles to be added in 88 grams of deionized waters, 3 hours is stirred at a temperature of 92 DEG C until polyvinyl alcohol
It is completely dissolved to form homogeneous solution, solution is cooled to 25 DEG C, 3 grams of silicone oil, 8 grams of a fluorine dichloroethanes, starch 1 is added to it
Gram, 8min is stirred, 3 grams of formaldehyde is added, 2 grams of sulfuric acid, stirs evenly；Then it pours the mixture into mold, 5 is small at 70 DEG C
When, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH nanofiber/compound hair of PVA
Foam material.The tensile strength of this foamed material is 5.8 MPa.
Embodiment 6
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 730 grams of polyvinyl alcohol (PVA1799), 270 grams of glycerine are put into high-speed mixer, control mixing temperature 60
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 150 DEG C, obtains plasticised polyvinyl alcohol
Particle.Take 875 grams of plasticised polyvinyl alcohols and 125 grams of PP-g-MAH to put into high-speed mixer, control mixing temperature at 70 DEG C,
It is uniformly mixed；It is squeezed out at 180 DEG C with double screw extruder melt blending, while 7 times of stretchings is carried out by traction equipment, then will
The blending material strip pelletizing stretched.
It takes 9 grams of blended particles to be added in 91 grams of deionized waters, 3 hours is stirred at a temperature of 92 DEG C until polyvinyl alcohol is complete
Fully dissolved forms homogeneous solution；Then solution is cooled to 25 DEG C, 1 gram of neopelex, a fluorine dichloroethanes 6 is added
Part, 2 grams of starch stir 10min, add 1 gram of glutaraldehyde, 1 gram of sulfuric acid, stir evenly；Finally pour the mixture into mold,
4 hours at 65 DEG C, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH Nanowire
Dimension/PVA composite foam material.The tensile strength of this foamed material is 4.3 MPa.
Embodiment 7
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 770 grams of polyvinyl alcohol (PVA1797), 230 grams of glycerine are put into high-speed mixer, control mixing temperature 70
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 175 DEG C, obtains plasticised polyvinyl alcohol
Particle.Take 750 grams of plasticised polyvinyl alcohols and 275 grams of PP-g-MAH to put into high-speed mixer, control mixing temperature at 70 DEG C,
It is uniformly mixed；It is squeezed out at 190 DEG C with double screw extruder melt blending, while 9 times of stretchings is carried out by traction equipment, then will
The blending material strip pelletizing stretched.
It takes 11 grams of blended particles to be added in 99 grams of deionized waters, 2 hours is stirred at a temperature of 95 DEG C until polyvinyl alcohol
It is completely dissolved to form homogeneous solution, 1.5 parts of silicone oil, 4 grams of pentane is added to it, 2 grams of starch, stirs 6min, adds penta 2
3 grams of aldehyde, stirs evenly at 2.5 grams of sulfuric acid；Then it pours the mixture into mold, 5 hours at 65 DEG C, crosslinking, foaming, solidification,
It takes out foaming body sufficiently to wash, removes residue, obtain PP-g-MAH nanofiber/PVA composite foam material.This foamed material
Tensile strength is 4.7 MPa.
Embodiment 8
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 790 grams of polyvinyl alcohol (PVA1797), 210 grams of glycerine are put into high-speed mixer, control mixing temperature 70
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated using conventional method at 164 DEG C, obtains plasticised polyvinyl alcohol
Particle.Take 870 grams of plasticised polyvinyl alcohols and 130 grams of PP-g-MAH to put into high-speed mixer, control mixing temperature at 70 DEG C,
It is uniformly mixed；It is squeezed out at 185 DEG C with double screw extruder melt blending, while 10 times of stretchings is carried out by traction equipment, then
The blending material strip pelletizing that will be stretched.
It takes 12 grams of blended particles to be added in 88 grams of deionized waters, 3.5 hours is stirred at a temperature of 88 DEG C until polyethylene
Alcohol is completely dissolved to form homogeneous solution, and solution is cooled to 25 DEG C, and 1.5 grams of silicone oil, 4 grams of a fluorine dichloroethanes is added to it, forms sediment
2 grams of powder, 6min is stirred, 3 grams of formaldehyde is added, 2 grams of sulfuric acid, stirs evenly；Then it pours the mixture into mold, at 70 DEG C
5 hours, crosslinking, foaming, solidification were taken out foaming body and are sufficiently washed, remove residue, it is compound to obtain PP-g-MAH nanofiber/PVA
Foamed material.The tensile strength of this foamed material is 5.1 MPa.
Embodiment 9
A kind of preparation method of the maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material of the present embodiment, including with
Lower step:
By 730 grams of polyvinyl alcohol (PVA1799), 270 grams of glycerine are put into high-speed mixer, control mixing temperature 55
DEG C, it is uniformly mixed；It with double screw extruder melt blending and is granulated at 170 DEG C, obtains plasticised polyvinyl alcohol particle.Take 840 grams
PVA and 160 gram of PP-g-MAH of plasticising is put into high-speed mixer, is controlled mixing temperature at 70 DEG C, is uniformly mixed；At 184 DEG C
It is squeezed out with double screw extruder melt blending, while 7 times of stretchings, the blending material strip that then will be stretched is carried out by traction equipment
Pelletizing.
It takes 15 grams of blended particles to be added in 85 grams of deionized waters, 4 hours is stirred at a temperature of 87 DEG C until polyvinyl alcohol
Be completely dissolved to form homogeneous solution, solution be then cooled to 30 DEG C, be added 2 grams of neopelex, 7 grams of pentane,
2 grams of starch, 10min is stirred, 2 grams of glutaraldehyde is added, 1.5 grams of hydrochloric acid, stirs evenly；Finally pour the mixture into mold,
5 hours at 50 DEG C, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH Nanowire
Dimension/PVA composite foam material.The tensile strength of this foamed material is 6.0MPa.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material, it is characterised in that including
Following steps:
(1) PVA is weighed by weight, in glycerine investment high-speed mixer, control mixing temperature is 50 DEG C ~ 70 DEG C, and mixing is equal
Plasticising PVA particle is obtained with double screw extruder melt blending and granulation at 150 DEG C ~ 180 DEG C after even；
(2) plasticising PVA particle and PP-g-MAH particle that step (1) obtains are put into high-speed mixer by weight, is controlled
Mixing temperature is at 50 DEG C~70 DEG C, after mixing, is squeezed out at 160 DEG C~180 DEG C with double screw extruder melt blending, simultaneously
4~12 times of stretchings are carried out by traction equipment, the blending material strip pelletizing that then will be stretched obtains blended particles；
(3) blended particles that step (2) obtains are add to deionized water, are stirred 2~4 hours at a temperature of 85 DEG C~95 DEG C
Homogeneous solution is formed until polyvinyl alcohol is completely dissolved；
(4) homogeneous solution in step (3) is cooled to 20~30 DEG C, surfactant, foaming agent and starch is then added, stirs
5~10min is mixed, crosslinking agent is added and catalyst stirs evenly to obtain mixture, then pour the mixture into mold, at 50 DEG C
3~5 hours at~80 DEG C, crosslinking, foaming, solidification are taken out foaming body and are sufficiently washed, remove residue, obtain PP-g-MAH nanometers
Fiber/PVA composite foam material.
2. the preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material according to claim 1,
It is characterized by: the parts by weight that PVA, glycerine are put into the step (1) are followed successively by 70~80 parts, 20~30 parts.
3. the preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material according to claim 1,
It is characterized by: PVA is selected from one of PVA1799 or PVA1797, the wherein degree of polymerization of PVA1799 in the step (1)
1700, alcoholysis degree 99%, the degree of polymerization 1700 of PVA1797, alcoholysis degree 97%.
4. the preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material according to claim 1,
It is characterized by: the parts by weight of PVA and PP-g-MAH particle are followed successively by 70~95 parts, 5~30 parts, PP-g- in the step (2)
The grafting rate of MAH particle is 1%.
5. the preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material according to claim 1,
It is characterized by: in the step (3) the investment parts by weight of blended particles and deionized water be followed successively by 0.8~1.5 part, 8.5~
9.2 part.
6. the preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material according to claim 1,
It is characterized by: in the step (4) the addition parts by weight of surfactant, foaming agent and starch be followed successively by 0.1~0.3 part,
0.2~0.8 part and 0.1~0.5 part；The additional amount of crosslinking agent and catalyst is 0.1~0.5 part.
7. the preparation method of maleated polypropylene micro nanometer fiber/polyvinyl alcohol foam material according to claim 1,
It is characterized by: surfactant is in lauryl sodium sulfate, neopelex and silicone oil in the step (4)
One kind, foaming agent are one of pentane and a fluorine dichloroethanes, and crosslinking agent is one of formaldehyde and glutaraldehyde, catalyst
For one of hydrochloric acid and sulfuric acid.
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| CN110204794A (en) * | 2019-06-21 | 2019-09-06 | 成都新柯力化工科技有限公司 | A kind of low cost high resilience biodegrade cushioned packing materials and preparation method |
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