CN105367964A - Composition for forming shock-absorbing sponge - Google Patents
Composition for forming shock-absorbing sponge Download PDFInfo
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- CN105367964A CN105367964A CN201410387203.0A CN201410387203A CN105367964A CN 105367964 A CN105367964 A CN 105367964A CN 201410387203 A CN201410387203 A CN 201410387203A CN 105367964 A CN105367964 A CN 105367964A
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Abstract
The invention relates to a composition for forming a shock-absorbing sponge. The composition comprises a substrate component, a foaming agent, and a bridging agent, wherein the substrate component comprises a main substrate and a sub-substrate, the main substrate comprises a vinyl acetate monomer unit and vinyl tertcarbonate monomer unit copolymer, and the sub-substrate comprises a polymer. According to the present invention, the shock-absorbing sponge subsequently formed from the composition is used in the wet or water environment, and is not easily subjected to hydrolysis.
Description
Technical field
The present invention relates to a kind of constituent continuous for the formation of bubble, particularly relate to a kind of constituent for the formation of vibration-suction foamed plastic.
Background technology
Plastics have been widely used in daily living article, plastic foamed shaping bubble continuous because of have light weight, wear-resisting, insulate, the material characteristic such as shock-resistant, be suitable as vibration absorptive material, so be often applied to the packing timber etc. of body protection equipment, sports equipment protective gear or precision instrument and equipment.
TaiWan, China patent publication No. 200842154 discloses a kind of constituent for the formation of vibration-suction foamed plastic, comprise a kind of main base material component and a kind of additive component, this main base material component is selected from vinyl acetate (vinylacetate, be called for short VA) monomer unit content scope be 50% ~ 90% ethylene-vinyl acetate copolymer (ethylene-vinylacetatecopolymer) or ethylene-vinylacetate-vinyl alcohol multipolymer (ethylene-vinylacetate-vinylalcoholcopolymer), this additive component comprises weighting agent, bridging agent, whipping agent, frothing aid, bridge formation auxiliary agent, and demolding aids.But, utilize the vibration-suction foamed plastic that aforementioned component thing is formed, if under environment that is moist or that have water, easily produce hydrolysis, cause this vibration-suction foamed plastic shock-absorbing performance significantly to reduce.
Therefore, how to find a kind of constituent, its follow-up formed vibration-suction foamed plastic is in humidity or not easily produce hydrolysis under having the environment of water, becomes the important topic of research at present.
Summary of the invention
The object of the present invention is to provide a kind of follow-up formed vibration-suction foamed plastic in humidity or the constituent for the formation of vibration-suction foamed plastic not easily producing hydrolysis under having the environment of water.
The present invention, for the formation of the constituent of vibration-suction foamed plastic, comprises a kind of base material component, whipping agent and bridging agent.
This base material component comprises main base material and secondary base material, this main base material comprises the multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate (vinylversatate) monomeric unit, this time base material comprises polymkeric substance, this polymkeric substance is selected from ethylene-vinyl acetate copolymer, polyethylene (polyethylene), polystyrene (polystyrene), styrene ethylene butadiene-styrene block copolymer (styrene-ethylene-butylene-styreneblockcopolymer, be called for short SEBS), styrene-isoprene-butadiene-styrene block copolymer (styrene-isoprene-butylene-styreneblockcopolymer, be called for short SIBS), polyolefin elastomer (polyolefinelastomer, be called for short POE), acrylonitrile-butadiene rubber (nitrile-butadienerubber, be called for short NBR), styrene butadiene rubbers (styrene-butadienerubber, be called for short SBR), thermoplastic elastomer (thermoplasticelastomer, be called for short TPE), or aforesaid combination.
Beneficial effect of the present invention is: this main base material comprises this multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit, and make follow-up the formed vibration-suction foamed plastic of constituent of the present invention under environment that is moist or that have water, not easily there is the phenomenon of hydrolysis to produce, and allow the shock-absorbing performance of this vibration-suction foamed plastic significantly reduce further.
Below will be described in detail with regard to content of the present invention:
[main base material]
This main base material comprises the multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit.
Preferably, should the multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit be selected from vinylacetate-ethylene-vinyl versatate copolymer (vinylacetate-ethylene-vinylversatatecopolymer), vinyl acetate-vinyl versatate copolymer (vinylacetate-vinylversatatecopolymer), vinyl acetate-tertiary ethylene carbonate-acrylate copolymer (vinylacetate-vinylversatate-acrylatecopolymer), or aforesaid combination.
[secondary base material]
Preferably, the polymkeric substance of this base material be selected from Vinyl Acetate Monomer unit content range be 10 ~ 35% ethylene-vinyl acetate copolymer, Vinyl Acetate Monomer unit content range be 60 ~ 90% ethylene-vinyl acetate copolymer, polyethylene, polystyrene, styrene ethylene butadiene-styrene block copolymer, styrene-isoprene-butadiene-styrene block copolymer, or aforesaid combination.
[base material component]
This base material component comprises main base material and secondary base material, preferably, is 100 parts by weight with the gross weight of this base material component, and the content range of this main base material is 40 ~ 95 weight parts, and the content range of this base material is 5 ~ 60 weight parts.More preferably, the content range of this main base material is 45 ~ 75 weight parts, and the content range of this base material is 25 ~ 55 weight parts.
[whipping agent]
Preferably, this whipping agent is selected from Cellmic C 121 (azodicarbonamide, be called for short ADCA), 4,4'-OBSH (4,4'-oxydibenzenesulfonylhydrazide is called for short OBSH), nitrogen, nitrogen-dinitrosopentamethlyene tetramine (N, N-dinitrosopentamethylenetetramine, is called for short DPT), or aforesaid combination.In a particular embodiment of the present invention, this whipping agent is Cellmic C 121.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this whipping agent is 1 ~ 8 weight part.
[bridging agent]
Preferably, this bridging agent is selected from dicumyl peroxide (dicumylperoxide), two (tributyl peroxy isopropyl base) benzene [di (t-butylperoxyisopropyl) benzene], 4,4-bis-(tributyl peroxidation) butyl valerate [n-butyl-4,4-di (t-butylperoxy) valerate], or aforesaid combination.In a particular embodiment of the present invention, this bridging agent is dicumyl peroxide or two (tributyl peroxy isopropyl base) benzene.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this bridging agent is 0.1 ~ 3 weight part.
[additive]
Preferably, the present invention also comprises additive for the formation of the constituent of vibration-suction foamed plastic.
This additive is selected from any existing being suitable for be added on the reagent for the formation of in the constituent of bubble silk floss, and preferably, this additive is selected from weighting agent, plasticizer, bridge formation auxiliary agent, frothing aid, or aforesaid combination.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this additive is 0.1 ~ 83 weight part.
Below describe in detail for (a) weighting agent, (b) plasticizer, (c) bridge formation auxiliary agent and (d) frothing aid respectively:
(a) weighting agent:
Preferably, this weighting agent is selected from calcium carbonate (CaCO
3), white cigarette, black smoke, talcum powder, clay, or aforesaid combination.In a particular embodiment of the present invention, this weighting agent is calcium carbonate or talcum powder.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this weighting agent is 0.1 ~ 58 weight part.
(b) plasticizer:
Preferably, this plasticizer is selected from phenyl alkylsulf (phenylalkylsulfonate, name of product is Mesamoll), 1, the different monooctyl ester of 2-cyclohexane dicarboxylic acid [bis (2-ethylhexyl) cyclohexane-1,2-dicarboxylate, be called for short DHEH], Di-2-ethylhexyl terephthalate [bis (2-ethylhexyl)-terephthalate, be called for short DOTP], dimixo-octyl phthalate [bis (2-ethylhexyl) phthalate is called for short DOP], or aforesaid combination.In a particular embodiment of the present invention, this plasticizer is phenyl alkylsulf.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this plasticizer is 0.1 ~ 15 weight part.
(c) bridge formation auxiliary agent:
Preferably, this bridge formation auxiliary agent is selected from triallyl cyanurate (triallylcyanurate, be called for short TAC), iso-cyanuric acid triallyl ester (triallylisocyanurate, be called for short TAIC), trimethylolpropane trimethacrylate (trimethylolpropanetrimethacrylate, be called for short TMPTMA), or aforesaid combination.In a particular embodiment of the present invention, this bridge formation auxiliary agent is trimethylolpropane trimethacrylate.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this bridge formation auxiliary agent is 0.1 ~ 2 weight part.
(d) frothing aid:
Preferably, this frothing aid is selected from stearate [as Zinic stearas (zincstearate)], metal oxide [as zinc oxide (ZnO)], urea derivative, or aforesaid combination.In a particular embodiment of the present invention, this frothing aid is zinc oxide.
Preferably, be 100 parts by weight with the gross weight of this base material component, the content range of this frothing aid is 0.1 ~ 8 weight part.
[constituent for the formation of vibration-suction foamed plastic]
The present invention is this base material component, this whipping agent, this bridging agent are mixed with this additive and carry out stirring to obtain afterwards for the formation of the constituent of vibration-suction foamed plastic.
The present invention can be applicable to prepare vibration-suction foamed plastic for the formation of the constituent of vibration-suction foamed plastic, and it, after this constituent being carried out idiosome at the beginning of mixing and obtained one of extrusion, makes this first idiosome carry out foaming again, can obtain vibration-suction foamed plastic.
Embodiment
The present invention will be described further with regard to following examples, but it is to be understood that this embodiment is only the use illustrated, and should not be interpreted as restriction of the invention process.
< embodiment 1 ~ 9, comparative example 1>
For the preparation of the constituent forming vibration-suction foamed plastic
Required composition and content is selected with table 2 (composition of selection and each component content) according to following table 1 (each numbering represents composition), and mix after all the components stirs, i.e. the constituent for the formation of vibration-suction foamed plastic of obtained embodiment 1 ~ 9 and comparative example 1.
Table 1:
Table 2:
< application examples 1 ~ 9, compare application examples 1>
Prepare vibration-suction foamed plastic
Step (1): by this embodiment 1 ~ 9 and the constituent for the formation of vibration-suction foamed plastic of comparative example 1, respectively at the temperature of 130 DEG C, after carrying out mixing 10 minutes, then carry out extrusion, idiosome at the beginning of forming.
Step (2): this first idiosome is placed in a hot-platen, and (temperature is set in 170 DEG C, and pressure setting is at 150kg/cm
2), carry out the foaming of 20 minutes, form a foam, and this foam is taken out from this hot-platen, after naturally cooling, application examples 1 ~ 9 (formed by embodiment 1 ~ 9 respectively) and the vibration-suction foamed plastic comparing application examples 1 (formed by comparative example 1) can be obtained.
The shock-absorbing performance test > of < vibration-suction foamed plastic
Prepare vibration-suction foamed plastic sample (dry sample and damp sample)
First application examples 1 ~ 9 and the vibration-suction foamed plastic compared obtained by application examples 1 are made after length, width and height are respectively the vibration-suction foamed plastic sample of 180cm, 90cm, 25mm, by described vibration-suction foamed plastic sample respectively at 23 DEG C, place 24 hours under the environment of relative humidity 50%, can dry sample be obtained; If by described vibration-suction foamed plastic sample respectively at 70 DEG C, place 72 hours under the environment of saturated humidity, then can obtain damp sample.
Impact Test
Be installed on the shock testing machine that impacts above detector by being placed on one respectively by application examples 1 ~ 9 and the dry sample compared obtained by application examples 1 and damp sample, and use 5kg impact head, with 50J energy impact sample, shock-absorbing effect is analyzed again by reading the numerical value impacting detector, when numerical value is lower, represent the impact energy more (namely shock-absorbing performance is better) that sample can absorb.In addition, also the numerical value increasing degree of damp sample relative to dry sample is calculated according to following formula I.
Formula I:
Damp sample relative to dry sample numerical value increasing degree (%)=
[(damp sample numerical value-dry sample numerical value)/dry sample numerical value] × 100
And the numerical value that application examples 1 ~ 9 reads with the dry sample and damp sample that compare application examples 1, and damp sample is relative to the numerical value increasing degree of dry sample, as shown in table 3 below respectively.
Table 3:
As shown in Table 3, when the main base material in constituent comprises vinylacetate-ethylene-vinyl versatate copolymer, the vibration-suction foamed plastic (application examples 1 ~ 9) that the embodiment 1 ~ 9 of vinyl acetate-vinyl versatate copolymer or vinyl acetate-tertiary ethylene carbonate-acrylate copolymer is formed, the vibration-suction foamed plastic (comparing application examples 1) that the comparative example 1 not comprising main base material (namely constituent does not comprise the multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit) with constituent is formed is compared, its numerical value increasing degree is less, when representing that the vibration-suction foamed plastic of application examples 1 ~ 9 is transformed into wet environment by dry environment, can the minimizing amplitude of apparatus with shock absorbing less (namely shock-absorbing performance reduction amplitude is less), also application example 1 ~ 9 is compared with comparing the vibration-suction foamed plastic of application examples 1, it is under wet environment, hydrolysis phenomena is more not easily had to produce, so compared with maintaining the continuous shock-absorbing performance of bubble.Therefore, confirmed by aforementioned result, the present invention is for the formation of the constituent of vibration-suction foamed plastic, when its main base material comprises this multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit (as the vinylacetate-ethylene-vinyl versatate copolymer of embodiment 1 ~ 9, vinyl acetate-vinyl versatate copolymer or vinyl acetate-tertiary ethylene carbonate-acrylate copolymer), effectively can reduce the chance that follow-up the formed vibration-suction foamed plastic of this constituent produces hydrolysis under moist or water environment.
It is worth mentioning that, the vibration-suction foamed plastic (application examples 1 ~ 6) that embodiment 1 ~ 6 constituent is formed, its numerical value increasing degree less (namely shock-absorbing performance reduction amplitude is less), the vibration-suction foamed plastic that expression embodiment 1 ~ 6 constituent is formed is in humidity or the generation more not easily having hydrolysis phenomena under having the environment of water.
In sum, because this main base material comprises this multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit, and make follow-up the formed vibration-suction foamed plastic of constituent of the present invention in humidity or under having the environment of water, not easily have the phenomenon of hydrolysis to produce, thus the shock-absorbing performance of this vibration-suction foamed plastic can not significantly reduce, so really can reach object of the present invention.
As described above, be only embodiments of the invention, and when not limiting scope of the invention process with this, the simple equivalence namely generally done according to claims of the present invention and description changes and modifies, and all still belongs to the scope that the present invention is contained.
Claims (9)
1. for the formation of a constituent for vibration-suction foamed plastic, it is characterized in that, described constituent comprises:
A kind of base material component, comprise main base material and secondary base material, this main base material comprises the multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit, this time base material comprises polymkeric substance, this polymkeric substance is selected from ethylene-vinyl acetate copolymer, polyethylene, polystyrene, styrene ethylene butadiene-styrene block copolymer, styrene-isoprene-butadiene-styrene block copolymer, polyolefin elastomer, acrylonitrile-butadiene rubber, styrene butadiene rubbers, thermoplastic elastomer, or aforesaid combination;
Whipping agent; And
Bridging agent.
2. the constituent for the formation of vibration-suction foamed plastic according to claim 1, it is characterized in that: should the multipolymer containing Vinyl Acetate Monomer unit and tertiary ethylene carbonate monomeric unit be selected from vinylacetate-ethylene-vinyl versatate copolymer, vinyl acetate-vinyl versatate copolymer, vinyl acetate-tertiary ethylene carbonate-acrylate copolymer, or aforesaid combination.
3. the constituent for the formation of vibration-suction foamed plastic according to claim 1, is characterized in that: be 100 parts by weight with the gross weight of this base material component, and the content range of this main base material is 40 ~ 95 weight parts, and the content range of this base material is 5 ~ 60 weight parts.
4. the constituent for the formation of vibration-suction foamed plastic according to claim 3, is characterized in that: be 100 parts by weight with the gross weight of this base material component, and the content range of this main base material is 45 ~ 75 weight parts, and the content range of this base material is 25 ~ 55 weight parts.
5. the constituent for the formation of vibration-suction foamed plastic according to claim 1, it is characterized in that: the polymkeric substance of this base material be selected from Vinyl Acetate Monomer unit content range be 10 ~ 35% ethylene-vinyl acetate copolymer, Vinyl Acetate Monomer unit content range be 60 ~ 90% ethylene-vinyl acetate copolymer, polyethylene, polystyrene, styrene ethylene butadiene-styrene block copolymer, styrene-isoprene-butadiene-styrene block copolymer, or aforesaid combination.
6. the constituent for the formation of vibration-suction foamed plastic according to claim 1, is characterized in that: be 100 parts by weight with the gross weight of this base material component, and the content range of this whipping agent is 1 ~ 8 weight part.
7. the constituent for the formation of vibration-suction foamed plastic according to claim 1, is characterized in that: be 100 parts by weight with the gross weight of this base material component, and the content range of this bridging agent is 0.1 ~ 3 weight part.
8. the constituent for the formation of vibration-suction foamed plastic according to claim 1, is characterized in that: this constituent also comprises additive.
9. the constituent for the formation of vibration-suction foamed plastic according to claim 8, is characterized in that: be 100 parts by weight with the gross weight of this base material component, and the content range of this additive is 0.1 ~ 83 weight part.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475199A (en) * | 2016-03-15 | 2019-03-15 | 耐克创新有限合伙公司 | Foam compositions and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293386A (en) * | 2007-04-27 | 2008-10-29 | 镕利兴业股份有限公司 | Process for manufacturing vibration-suction foamed plastic |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293386A (en) * | 2007-04-27 | 2008-10-29 | 镕利兴业股份有限公司 | Process for manufacturing vibration-suction foamed plastic |
Non-Patent Citations (1)
| Title |
|---|
| 余先纯 等: "《聚醋酸乙烯酯乳液胶》", 31 May 2010, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475199A (en) * | 2016-03-15 | 2019-03-15 | 耐克创新有限合伙公司 | Foam compositions and application thereof |
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