CN106584742A - Method for preparing foaming buffer packing material - Google Patents
Method for preparing foaming buffer packing material Download PDFInfo
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- CN106584742A CN106584742A CN201611204568.0A CN201611204568A CN106584742A CN 106584742 A CN106584742 A CN 106584742A CN 201611204568 A CN201611204568 A CN 201611204568A CN 106584742 A CN106584742 A CN 106584742A
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- slurry
- foamed
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- foamed fibre
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
- B29C44/355—Characteristics of the foam, e.g. having particular surface properties or structure
- B29C44/358—Foamed of foamable fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
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- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a method for preparing a foaming buffer packing material, and belongs to the technical field of preparation of foaming materials. The method comprises the following steps: fibers, a surface active agent and water are mixed as slurry; the slurry is stirred as foams to obtain foam fibers; the foam fibers are filtered in vacuum until eyes cannot observe water lines; and the foam fibers are dried to reach the water content of below 10%. The method uses a lot of plants in the nature as main raw materials; the raw materials are wide in source, and can be totally and naturally degraded and regenerated; a normal-temperature low-pressure mechanical stirring one-step forming method is adopted, so that the preparation method is simple; and the prepared material reaches the density of below 0.1 g/cm3, the resilience of higher than 80%, the elongation at break of higher than 200% and the tensile strength (index) of higher than 10 Nm/g, and has such excellent characteristics as shock resistance, vibration resistance, sound absorption, damp resistance and insulation.
Description
Technical field
The present invention relates to a kind of method for preparing foamed damping packing material, belongs to expanded material preparing technical field.
Background technology
Into 21 century since, with the raising of fast-developing and people's level of consumption of World Economics, packaging becomes
People live and requisite important component part in trade activity.Wherein, based on polystyrene(EPS)Foam buffers packet
Package material, because of its light weight, shockproof, good mechanical property, and possesses good processing characteristics and decoration performance, is widely used in electricity
The fields such as sub- product, household electrical appliance, engineering goods and instrument and meter, by domestic and international common concern.However, on the one hand due to big
The raw material sources of most amortizing packaging materials cause being further exacerbated by for energy crisis in non-renewable petroleum resources.It is another
Aspect produces severe contamination during production and offal treatment to environment, such as fluorochlorohydrocarbon used in production process etc. sternly
Atmospheric ozone layer is destroyed again;During burning or landfill, can discharge including the various toxic thing including sulfur dioxide
Matter, causes air, soil and water pollution, causes the deterioration of the ecological environment.Get along to enhance harmony between man and nature, some are relatively sent out
All make laws up to country and prohibite the packaging that import industrial products are carried out using foamed plastics, it is current increasingly serious to improve
Environment and resource problem.Therefore, seek to develop a kind of novel environment friendly packaging material replacement foam article with very heavy
The meaning wanted.
It is raw material using reproducible agriculture waste biomass resource for current this present situation, research and development have degradable
The biomass packaging material of performance and product, not only raw material sources are considerable, convenience of drawing materials, and make discarded biomass resource obtain weight
It is new to utilize, resource utilization is improved, further alleviate the pressure of shortage of resources, and also such material can avoid " white pollution " right
Destruction caused by environment, so as to be effectively improved ecological environment, while the demand of domestic and international packaging market can be met, with far-reaching
Economic implications and social effect, it has also become the study hotspot of various countries in recent years.
CN1147978 discloses " a kind of expanded material manufactured with plant ", and the expanded material utilizes string, fruit
It is raw material with various non-toxic auxiliaries, Jing boiling, defibrination, drifts etc. after operation is processed and use ultrasonic wave foaming and molding.CN101481506
Disclose a kind of with string, starch foaming wholly-degradable material waterproofing product, be blended using string, starch and waterproofing agent
Extrusion foaming obtains intensive less foamed products.CN105542233 discloses one kind with cellulose viscose solution as raw material, profit
The method that the shaping that carried out being heating and curing with voltage regulation adjustor prepares expanded material.CN103627023 discloses one kind with cellulose
Solution, surfactant are raw material, and Jing mechanical agitations, baking oven are baked and banked up with earth, deionized water soak, prepare the effects such as wash, be dried
The method of foam material.However, this several method or the more auxiliary agent of addition(Foaming agent, adhesive, lubricant or filler etc.), or system
Standby technique is complex and foaming process is with HTHP, needs to expend mass energy, or needs first to make cellulose
Solution, production cost is higher, expansion ratio is not enough, and has that forming ability is poor, resiliency is poor, intensity after high foamability
Cannot ensure and the defect such as difficult forming.
The content of the invention
It is an object of the invention to provide a kind of density is in 0.1g/cm3Below, resilience is high higher than 80%, elongation at break
In 200%, tensile strength(Index)The preparation method of the foamed damping packing material higher than 10 Nm/g.
Technical scheme:
A kind of method for preparing foamed damping packing material, comprises the steps:
Fiber, surfactant and water are mixed into obtain slurry;By slurry agitation to show bubble, foamed fibre is obtained;It is fine to foam
Dimension carries out vacuum filtration, to visually observing less than waterline;Then it is dried to water content below 10%;
Vacuum during vacuum filtration is 0.01-0.1 Mpa;
The content of fiber is not less than 0.1% in slurry, and surfactant is not less than 1% relative to the consumption of fiber;
The percentage is mass percent.
Experimental studies have found that:
If the first, be dehydrated to foamed fibre by the way of natural-dehydration, required dewatering time is long, in dehydration
Bubble can rupture, and especially the rupture quantity of lower floor's bubble is significantly larger than the rupture quantity of upper strata bubble;On the one hand bubble can be caused
Foam fiber caves in, it is impossible to form expanded material;On the other hand, the upper lower density of formed expanded material can be caused inconsistent,
And the global density of expanded material is bigger than normal, it is impossible to reach the performance requirement of expanded material.Using the dewatering type pair of vacuum filtration
Foamed fibre is dehydrated, can fast dewatering;It is necessary to strictly control vacuum and suction filtration time;If vacuum is too high,
Suction filtration overlong time, can cause bubble to rupture in a large number, it is impossible to obtain expanded material;If vacuum is too low, the suction filtration time is too short,
It is difficult to be molded, during drying equipment is transferred to, can caves in, it is impossible to obtain expanded material;Therefore, considered critical of the present invention
Vacuum and suction filtration degree.Preferably, vacuum is 0.03~0.06Mpa;With this understanding, suction filtration is easily controlled.
If the second, the content of fiber is too low in slurry, although foamed fibre can be formed, but due to as supporting construction
Fiber content it is few, the foamed fibre for being formed is unstable, and during it is taken out from container, foamed fibre subsides,
Cannot be molded, and expanded material cannot be obtained;Therefore, the considered critical of the present invention lower limit of fiber content.If fine in slurry
The too high levels of dimension, then can cause to stir difficulty raising, and slurry is difficult to complete foamed, and so that being dried difficulty becomes big, aobvious
Write and improve drying cost;It is preferred, therefore, that the content of fiber is not higher than 5%;It is furthermore preferred that the content of fiber is 0.5-3%.
If the 3rd, the consumption of surfactant is too low, cannot be by the thorough foamed of slurry;Stir anyway, always
It is the slurry that there is flowing, it is impossible to form stable foamed fibre, it is impossible to from container take out it, and foaming material cannot be obtained
Material;Therefore, the considered critical of the present invention lower limit of surfactant.If the consumption of surfactant is too high, significantly improve
Production cost;It is preferred, therefore, that the content of surfactant is not higher than 20%;It is furthermore preferred that the content of surfactant is 5-
10%。
4th, fibre length determines the performances such as intensity, resilience, the uniformity, porosity, the aperture of product, and fiber is long
Intensity, resilience, the uniformity decline of product can be caused, fiber is too short to cause product reduction in porosity;It is preferred, therefore, that
The length of fiber is 20-50 μm.
Said method, it is further comprising the steps of, before vacuum filtration is carried out to foamed fibre, foamed fibre is added to
In mould.
Said method, stirring can be provided by any mixing plant, in order to quickly obtain foamed fibre, it is preferred that stir
Speed is mixed between 500~2000 r/min, it is more preferred to 1000~1500 r/min.
Said method, the volume of the foamed fibre can determine according to the apparent density of purpose product, it is preferred that foam
The volume of fiber is 1.05-1.8 times of slurry volume;It is furthermore preferred that the volume of foamed fibre is the 1.2-1.4 of slurry volume
Times.
Said method, for reduces cost, while obtaining green, capable of circulation, pollution-free, degradable product;Preferably,
The fiber is string;The lignocellulosic fiber source is in straw, straw, cornstalk, sorghum stalk, cotton stalk, reed, dragon
At least one in grass, flax leaf and cocoanut shell.
Said method, the surfactant is the arbitrary surfaces activating agent for possessing foam performance;It can be dodecyl
Benzene sulfonic acid sodium salt, sodium sulfate of polyethenoxy ether of fatty alcohol, dodecyl dimethyl hydroxypropyl sulfobetaines, dodecyl ethyoxyl
Sulfobetaines, myristyl sulfobetaines, dodecyldimethylamine base hydroxypropyl sulfobetaines, cetyl sulfobetaines
Alkali, octadecyl ethyoxyl sulfobetaines, octadecyldimethyl azochlorosulfonate propyl lycine, hexadecyldimethyl benzyl ammonium hydroxypropyl sulphur
Base glycine betaine, decyl dimethyl hydroxypropyl sulfobetaines, palmitic amide propyl group hydroxypropyl sulfobetaines, stearamide
Propyl group hydroxypropyl sulfobetaines, dodecanamide propyl hydroxy sulfo lycine, cocamidopropyl propyl amide hydroxy sulfo lycine, coconut oil
Phosphate glycine betaine, dodecyl Hydroxypropyl phosphate ester glycine betaine, myristyl Hydroxypropyl phosphate ester glycine betaine, cetyl hydroxyl
Propyl phosphate glycine betaine, octadecyl Hydroxypropyl phosphate ester glycine betaine, polysorbas20, polysorbate40, Tween 80, polysorbate85 and paper
At least one in pulp waste.
Said method, dried process can be by including appointing including air drying, oven drying, vacuum drying and freeze-drying
A kind of what drying mode is provided.
Upper Preparation Method, foamed fibre can be placed in after mould carries out vacuum filtration;Mold shape system for needed for
Standby packing container shape;Can be that square, round, cast, cup type and sheet type etc. are variously-shaped.
Foamed damping packing material prepared by the present invention, density is in 0.1g/cm3Below, resilience is stretched higher than 80%, fracture
Long rate is higher than 200%, tensile strength(Index)Higher than 10 Nm/g.
The plant that exists in a large number with nature of the present invention as primary raw material, using Room-temperature low-pressure mechanical agitation one-step shaping
Method, prepares a kind of novel green foamed damping packing material.The products material wide material sources, can natural degradation and regeneration completely,
And possess the good characteristics such as anti-impact shockproof, sound-absorbing is moistureproof, thermal insulating.The technology not only can realize biological material in packaging
Effective replacement of the field to petroleum, and production and the environmental pollution during use are solved to a certain extent
Problem, be conducive to resource it is comprehensive, recycle, meet national green packaging material exploitation and sustainable development policy will
Ask.
Beneficial effects of the present invention:
Raw material sources are extensive, auxiliary agent is nontoxic and consumption is less, preparation process is simple, prepared biomass foaming buffer packaging material
Material intensity height, low density, good buffer effect, can natural degradation completely.
Description of the drawings
Fig. 1 is the form of the foamed fibre obtained in the preparation process of the present invention;
Fig. 2 is the form of the foamed damping packing material prepared by the present invention.
Specific embodiment
With reference to specific embodiment, the invention will be further described;Except as otherwise indicating, the number in embodiment
In mass.
Embodiment 1
The string of 20 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1980 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 15 min, the complete show bubble of slurry(Do not exist
Working fluid), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its
Form is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 5min,
Waterline in foamed fibre disappears;To obtain after foamed fibre air drying 24h after dehydration foamed damping packing material into
Product, its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.05g/cm3, resilience is higher than 85%, tensile index
11.5 Nm/g, elongation at break 292%, degradation rate>99%.
Embodiment 2
The string of 40 parts of mm of length 20 ~ 50 is added in reactor, it is another to add 4 parts of neopelexes and 1960
Part water, obtains slurry;Start agitator and adjust rotating speed to 1500r/min, stir 20min, the complete show bubble of slurry(There is no stream
Hydrodynamic body), obtain the foamed fibre that volume of air content reaches 30%(The volume of foamed fibre is 1.1 times of slurry volume), its shape
State is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 5min, bubble
Waterline in foam fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 24h after dehydration,
Its form is as shown in Figure 2.The density of Jing measurement products is 0.05g/cm3, resilience be higher than 80%, tensile index 10.9Nm/g,
Elongation at break 256%, degradation rate>99%.
Embodiment 3
The string of 40 parts of mm of length 20 ~ 50 is added in reactor, 4 parts of polysorbas20s and 1960 parts of water are separately added, must be starched
Material;Start agitator and adjust rotating speed to 1500r/min, stir 10min, the complete show bubble of slurry(There is no working fluid),
Obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its form such as Fig. 1
It is shown;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.08Mpa)After dehydration 3min, foamed fibre
In waterline disappear;80 DEG C of foamed fibre baking oven after dehydration is dried after 6h and obtains foamed damping packing material finished product,
Its form is as shown in Figure 2.The density of Jing measurement products is 0.09g/cm3, resilience be higher than 80%, the Nm/g of tensile index 11.6,
Elongation at break 285%, degradation rate>99%.
Embodiment 4
The string of 40 parts of mm of length 20 ~ 50 is added in reactor, 6 parts of polysorbas20s and 1960 parts of water are separately added, must be starched
Material;Start agitator and adjust rotating speed to 1500r/min, stir 25min, the complete show bubble of slurry(There is no working fluid),
Obtain the foamed fibre that volume of air content reaches 50%(The volume of foamed fibre is 1.1 times of slurry volume), its form such as Fig. 1
It is shown;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)Dehydration 3min, in foamed fibre
Waterline disappear;80 DEG C of foamed fibre baking oven after dehydration is dried after 6h and obtains foamed damping packing material finished product, its
Form is as shown in Figure 2.The density of Jing measurement products is 0.03g/cm3, resilience is higher than 80%, the Nm/g of tensile index 10.8, is broken
Split elongation 227%, degradation rate>99%.
Embodiment 5
The string of 40 parts of mm of length 20 ~ 50 is added in reactor, it is another to add 4 parts of neopelexes and 1960
Part water, obtains slurry;Start agitator and adjust rotating speed to 1500r/min, stir 10min, the complete show bubble of slurry(There is no stream
Hydrodynamic body), obtain the foamed fibre that volume of air content reaches 20%(The volume of foamed fibre is 1.1 times of slurry volume), its shape
State is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.08Mpa)Dehydration 3min, foam
Waterline in fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 24h after dehydration, its
Form is as shown in Figure 2.The density of Jing measurement products is 0.07g/cm3, resilience is higher than 80%, the Nm/g of tensile index 10.3, is broken
Split elongation 253%, degradation rate>99%.
Embodiment 6
The string of 20 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1980 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 500r/min, stir 30min, the complete show bubble of slurry(There is no stream
Hydrodynamic body), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its shape
State is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 5min, bubble
Waterline in foam fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 24h after dehydration,
Its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.09g/cm3, resilience is higher than 80%, tensile index 10.8Nm/
G, elongation at break 310%, degradation rate>99%.
Embodiment 7
The string of 20 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1980 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 2000r/min, stir 10min, the complete show bubble of slurry(There is no stream
Hydrodynamic body), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its shape
State is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 5min, bubble
Waterline in foam fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 24h after dehydration,
Its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.07g/cm3, resilience is higher than 80%, tensile index 11.3Nm/
G, elongation at break 281%, degradation rate>99%.
Embodiment 8
The string of 20 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1980 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 15 min, the complete show bubble of slurry(Do not exist
Working fluid), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its
Form is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.01Mpa)Dehydration 15min
Afterwards, the waterline in foamed fibre disappears;Foamed damping packing material will be obtained after foamed fibre air drying 24h after dehydration
Finished product, its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.1g/cm3, resilience is higher than 85%, tensile index
10.1Nm/g, elongation at break 308%, degradation rate>99%.
Embodiment 9
The string of 20 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1980 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 15 min, the complete show bubble of slurry(Do not exist
Working fluid), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its
Form is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.1Mpa)After dehydration 2min,
Waterline in foamed fibre disappears;To obtain after foamed fibre air drying 24h after dehydration foamed damping packing material into
Product, its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.07g/cm3, resilience is higher than 80%, tensile index
10.1Nm/g, elongation at break 278%, degradation rate>99%.
Embodiment 10
The string of 100 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1900 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 15min, the complete show bubble of slurry(There is no stream
Hydrodynamic body), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its shape
State is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 5min, bubble
Waterline in foam fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 24h after dehydration,
Its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.04g/cm3, resilience is higher than 85%, tensile index 10.6Nm/
G, elongation at break 226%, degradation rate>99%.
Embodiment 11
The string of 60 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1940 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 15min, the complete show bubble of slurry(There is no stream
Hydrodynamic body), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its shape
State is as shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 3min, bubble
Waterline in foam fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 18h after dehydration,
Its form is as shown in Figure 2.The apparent density of Jing measurement products is 0.02g/cm3, resilience is higher than 85%, tensile index 11.2Nm/
G, elongation at break 209%, degradation rate>99%.
Embodiment 12
The string of 2 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1998 parts are added
Water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 10min, the complete show bubble of slurry(There is no flowing
Liquid), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its form
As shown in Figure 1;Foamed fibre is transferred in mould, using vacuum filtration(Vacuum is 0.05Mpa)After dehydration 5min, foam
Waterline in fiber disappears;Foamed damping packing material finished product will be obtained after foamed fibre air drying 8h after dehydration, its
Form is as shown in Figure 2.The apparent density of Jing measurement products is 0.01g/cm3, resilience be higher than 80%, tensile index 10.1Nm/g,
Elongation at break 201%, degradation rate>99%.
Comparative example 1
The string of 20 parts of mm of length 20 ~ 50 is added in reactor, 1 part of neopelex and 1980 are added
Part water, obtains slurry;Start agitator and adjust rotating speed to 1000r/min, stir 15 min, the complete show bubble of slurry(Do not exist
Working fluid), obtain the foamed fibre that volume of air content reaches 10%(The volume of foamed fibre is 1.1 times of slurry volume), its
Form is as shown in Figure 1;Foamed fibre is transferred in mould and is stood after 15min, bubble ruptures in a large number, especially bottom;After
45min foams disappear substantially, and material still contains compared with juicy;To obtain final product after foamed fibre air drying 48h after preliminary hydro-extraction
Finished product, product is comparatively dense, basic imporosity.The apparent density of Jing measurement products is 0.6g/cm3, resilience is higher than 80%, is resisted
Tensile index 11.9Nm/g, elongation at break 236%, degradation rate>99%.
Claims (10)
1. a kind of method for preparing foamed damping packing material, it is characterised in that comprise the steps:
Fiber, surfactant and water are mixed into obtain slurry;By slurry agitation to show bubble, foamed fibre is obtained;It is fine to foam
Dimension carries out vacuum filtration, to visually observing less than waterline;Then it is dried to water content below 10%;
Vacuum during vacuum filtration is 0.01-0.1Mpa;
The content of fiber is not less than 0.1% in slurry, and surfactant is not less than 1% relative to the consumption of fiber;
The percentage is mass percent.
2. method according to claim 1, it is characterised in that vacuum is 0.03~0.06Mpa.
3. method according to claim 1 and 2, it is characterised in that the content of fiber is not higher than 5%, surfactant
Content is not higher than 20%.
4. method according to claim 3, it is characterised in that the content of fiber is 0.5-3%, the content of surfactant
For 5-10%.
5. method according to claim 4, it is characterised in that mixing speed is between 500~2000 r/min.
6. method according to claim 5, it is characterised in that the volume of foamed fibre is the 1.05-1.8 of slurry volume
Times.
7. method according to claim 6, it is characterised in that before vacuum filtration is carried out to foamed fibre, by foam
Fiber is added in mould.
8. method according to claim 7, it is characterised in that the fiber is string, and the length of fiber is 20-50
μm。
9. method according to claim 8, it is characterised in that the surfactant is that the surface for possessing foam performance is lived
Property agent.
10. the foamed damping packing material that prepared by a kind of claim 1-9 any one claim methods described.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108585761A (en) * | 2018-05-04 | 2018-09-28 | 齐鲁工业大学 | A kind of preparation method of biomass-based sound-absorbing and flame-retardant construction material |
CN109401164A (en) * | 2018-11-01 | 2019-03-01 | 浙江大胜达包装股份有限公司 | Starch base foamed damping material and packaging material |
CN111391352A (en) * | 2020-03-18 | 2020-07-10 | 天津商业大学 | Forming method of dissolving pulp fiber buffer packaging material |
CN116108763A (en) * | 2023-04-13 | 2023-05-12 | 湖南工商大学 | Method for predicting bubble collapse critical point of foaming material based on temperature |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106084279A (en) * | 2016-06-06 | 2016-11-09 | 陕西科技大学 | A kind of preparation method of cellulose base biodegradable expanded material |
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Patent Citations (1)
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CN106084279A (en) * | 2016-06-06 | 2016-11-09 | 陕西科技大学 | A kind of preparation method of cellulose base biodegradable expanded material |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108585761A (en) * | 2018-05-04 | 2018-09-28 | 齐鲁工业大学 | A kind of preparation method of biomass-based sound-absorbing and flame-retardant construction material |
CN109401164A (en) * | 2018-11-01 | 2019-03-01 | 浙江大胜达包装股份有限公司 | Starch base foamed damping material and packaging material |
CN109401164B (en) * | 2018-11-01 | 2021-04-06 | 浙江大胜达包装股份有限公司 | Starch-based foaming buffer material and packaging material |
CN111391352A (en) * | 2020-03-18 | 2020-07-10 | 天津商业大学 | Forming method of dissolving pulp fiber buffer packaging material |
CN116108763A (en) * | 2023-04-13 | 2023-05-12 | 湖南工商大学 | Method for predicting bubble collapse critical point of foaming material based on temperature |
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