CN106584742A - Method for preparing foaming buffer packing material - Google Patents

Method for preparing foaming buffer packing material Download PDF

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Publication number
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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China
Prior art keywords
slurry
foamed
fiber
volume
foamed fibre
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CN201611204568.0A
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Chinese (zh)
Inventor
李国栋
宋兆萍
刘温霞
王慧丽
于得海
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Qilu University of Technology
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Qilu University of Technology
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Priority to CN201611204568.0A priority Critical patent/CN106584742A/en
Publication of CN106584742A publication Critical patent/CN106584742A/en
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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
    • 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
    • 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
    • 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

A kind of method for preparing foamed damping packing material
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.
CN201611204568.0A 2016-12-23 2016-12-23 Method for preparing foaming buffer packing material Pending CN106584742A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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

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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
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CN111391352A (en) * 2020-03-18 2020-07-10 天津商业大学 Forming method of dissolving pulp fiber buffer packaging material
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Application publication date: 20170426