CN102786734B - Composite foamed shoe material formed by polyolefin and polyolefin elastomers grafted with starch in dry process - Google Patents
Composite foamed shoe material formed by polyolefin and polyolefin elastomers grafted with starch in dry process Download PDFInfo
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- CN102786734B CN102786734B CN201210256423.0A CN201210256423A CN102786734B CN 102786734 B CN102786734 B CN 102786734B CN 201210256423 A CN201210256423 A CN 201210256423A CN 102786734 B CN102786734 B CN 102786734B
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Abstract
The invention provides a composite foamed shoe material formed by polyolefin and polyolefin elastomers grafted with starch in a dry process and a preparation method thereof. According to the invention, widely available and fully degradable starch is used for dry graft copolymerization with EVA resin and elastomers in an internal mixer, additives like an inorganic filler, a cross-linking agent and a foaming agent are added, and then specific process flow is employed so as to prepare the composite foamed shoe material formed by polyolefin and polyolefin elastomers grafted with starch in a dry process. The method provided by the invention can well overcome the problem of compatibility of starch with EVA resin, a solvent is not needed in the process of grafting, an obtained grafted copolymer does not need to be separated, and the method has the advantages of simple operation, convenient processing and high practicability.
Description
Technical field
The invention provides a kind of starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer its preparation method.
Background technology
Ethylene-vinyl acetate (EVA) has that light weight after fine plasticity-, elasticity and foaming, mechanical property are good, easy coloring and the advantage such as comfortable and easy to wear, is deeply subject to liking of footwear material industry.But EVA belongs to polyolefinic elastomerics, stable at physical environment performance, hard degradation, easily causes white pollution, threatens the mankind's living environment.And starch source is in green plants, inexhaustible, and in various environment, all possess biodegradability completely, and the application of developing starch is conducive to increase peasant's income, the development of promotion rural economy.The more important thing is that related documents shows, starch can promote the degraded of polyolefins material, therefore starch is joined in EVA foamed shoe sole, can alleviate to a certain extent environmental stress, meets the requirement of low-carbon environment-friendly.
Because starch contains a large amount of hydroxyls, it is hydroaropic substance, and EVA is ethylene-vinyl acetate copolymer, for lyophobic dust, therefore the consistency of the two is poor, if the two is not processed, easily in EVA matrix, reunite or come off under the effect of external force, causing prepared material mechanical performance out very poor, substantially not possessing use value.Its solution has two kinds, and the one, find suitable solubilizing agent, the 2nd, starch is carried out hydrophobically modified or EVA is carried out to hydrophilic modifying.The present invention utilizes dual initiator to carry out dry method graft modification to starch and EVA, and starch, the mutual grafting of EVA are become one.This method can solve its compatibility problem preferably, and grafting process do not need to add solvent, and prepared graft copolymer does not need separation, simple to operate, easy to process, practical.
Summary of the invention
The present invention utilizes originate starch and EVA resin, elastomerics abundant, Wholly-degradable in Banbury mixer, to carry out dry method graft copolymerization, and add the auxiliary agents such as mineral filler, linking agent, whipping agent, by specific technical process, make starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer.The advantages such as this footwear material has tensile strength and tear strength is high, compression set is little, density is low, degradability.In addition, adopting dry method graft copolymerization not only to have does not need solvent, and multipolymer does not need separated advantage, and can solve preferably the compatibility problem of starch and EVA.Therefore utilize the method to prepare composite foam material, not only technique is simple, low-carbon environment-friendly, and also production cost is low, and practical.
The technical solution used in the present invention
The composite foamed footwear material of starch dry method graft polyolefin and ethylene octane copolymer, is characterized in that, the weight proportion of each component of raw material is as follows: EVA100 part; Elastomerics 10-30 part; Starch 20-120 part; Mineral filler 0-40 part; Softening agent 2-10 part; Whipping agent 6-12 part; Linking agent 1-4 part; Surface treatment agent 0-0.5 part; Other auxiliary agent 1-10 part; Starch initiator ammonium persulfate 0.001-0.005 part; Polyolefin and polyolefin elastomer initiator B PO is 0.001-0.01 part.
Described elastomerics is POE(ethylene-octene copolymer), one or both the mixing in styrene-isoprene-phenylethene (SIS)/natural rubber (SPR), terpolymer EP rubber.
Described starch is tapioca (flour), W-Gum or yam starch.
Described mineral filler is kaolin, modified kaolin, talcum powder or modified talc powder.
Described softening agent is glycerine.
Described whipping agent is Cellmic C 121.
Described linking agent is dicumyl peroxide.
Described surface treatment agent is silane coupling agent or aluminium titanium composite coupler.
Other described auxiliary agents are the mixture of the fast ripe dose of CH-09 of stearic acid, Zinic stearas, zinc oxide and EVA, wherein stearic acid: Zinic stearas: zinc oxide: EVA is fast, and ripe dose of CH09 is 0.6-1:0.8-1.5:2-3:1.5-3 according to the proportioning of weight.
Further, the composite foamed footwear material of described starch dry method graft polyolefin and ethylene octane copolymer preferably consists of the following composition (with weight part, representing):
EVA100 part; Elastomerics 20-30 part; Starch 40-100 part; Mineral filler 10-20 part; Softening agent 2-6 part; Whipping agent 7-10 part; Linking agent 2-3 part; Surface treatment agent 0.001-0.1 part; Other auxiliary agent 5-9 part; Starch initiator ammonium persulfate 0.001-0.005 part; Polyolefin and polyolefin elastomer initiator B PO is 0.001-0.01 part.
Mineral filler is preferably with modified talc powder or modified kaolin.
The composite foamed footwear material of starch dry method graft polyolefin of the present invention and ethylene octane copolymer, can prepare by the following method:
(1) by the mineral filler that obtains processing after surface treatment agent and mineral filler mixing; (2) starch is mixed with softening agent, obtain the starch of plasticising; (3) starch of plasticising and EVA, elastomerics, mineral filler, other auxiliary agents, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent are joined to the plasticizing matrix material that is mixed to get starch-grafted Polyolefin and polyolefin elastomer in Banbury mixer, use again mill mixing pulling-on piece, finally with vulcanizing press foaming, make described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer.
Further, the invention provides described starch dry method graft polyolefin and the composite foamed footwear material, preparation method of ethylene octane copolymer is:
(1) with after ethanol or dissolve with methanol surface treatment agent and mineral filler at 60-70 ℃ after high-speed stirring, the mineral filler that obtains processing after placing more than 24h under normal temperature sealed state; (2) starch and softening agent at normal temperatures after high-speed stirring, are obtained to the starch of plasticising; (3) starch of plasticising and EVA, elastomerics, mineral filler, other auxiliary agents, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent are joined in Banbury mixer to internal mixing and plasticizing 3-10min at 100-140 ℃, be mixed to get the plasticizing matrix material of starch-grafted Polyolefin and polyolefin elastomer, use again mill at 45-90 ℃ of pulling-on piece, finally with vulcanizing press, at 160-200 ℃, issue brewed described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer of obtaining.
Preferably, the preparation method of described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer operates according to the following steps:
In having the high-speed mixer of refrigerating unit in softening agent: the ratio that starch is 1:10 is processed starch at normal temperatures, and high-speed stirring 15 minutes, and placing 24 hours at normal temperatures with sealing bag makes softening agent be penetrated into completely uniformly in starch granules;
With appropriate ethanol or methyl alcohol, at 50 ℃, dissolve or dilute surface treatment agent, then in high-speed mixer in surface treatment agent: the ratio treatment inorganic filling material that mineral filler is 2:1000,60-70 ℃ of high-speed stirring 15 minutes, and and placing 24 hours at normal temperatures with sealing bag.
By material composition, form and get each raw material, the starch of plasticising and EVA, elastomerics, mineral filler, other auxiliary agents, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent are joined in Banbury mixer, internal mixing and plasticizing 5-10min at 110-130 ℃, obtain the plasticizing matrix material of starch-grafted Polyolefin and polyolefin elastomer, use again mill at 45-90 ℃ of lower drawing piece, finally with vulcanizing press, at 170-180 ℃, issue brewed described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer of obtaining.
The present invention utilizes originate starch and EVA resin, elastomerics abundant, Wholly-degradable in Banbury mixer, to carry out dry method graft copolymerization, and add the auxiliary agents such as mineral filler, linking agent, whipping agent, by specific technical process, make starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer.The advantages such as this footwear material has tensile strength and tear strength is high, compression set is little, density is low, degradability.In addition, adopting dry method graft copolymerization not only to have does not need solvent, and multipolymer does not need separated advantage, and can solve preferably the compatibility problem of starch and EVA.Therefore utilize the method to prepare composite foam material, not only technique is simple, low-carbon environment-friendly, and also production cost is low.
Embodiment
With specific embodiment, the present invention will be further described below, but protection scope of the present invention is not limited to this.
Before implementing each scheme, in having the high-speed mixer of refrigerating unit in softening agent: the ratio that starch is 1:10 is processed starch at normal temperatures, high-speed stirring 15 minutes, and place 24 hours at normal temperatures with sealing bag, make softening agent be penetrated into completely uniformly in starch granules; With appropriate ethanol or methyl alcohol, at 50 ℃, dissolve or dilute surface treatment agent, then in high-speed mixer in surface treatment agent: the ratio treatment inorganic filling material that mineral filler is 2:1000,60-70 ℃ of high-speed stirring 15 minutes, and and placing 24 hours at normal temperatures with sealing bag.
Embodiment 1-5
By material composition, form and get each raw material, by the starch of plasticising and EVA, elastomerics, mineral filler, stearic acid, Zinic stearas, zinc oxide, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent joins in Banbury mixer, internal mixing and plasticizing 5-10min at 110-130 ℃, obtain the plasticizing matrix material of starch-grafted Polyolefin and polyolefin elastomer, use again mill at 45-90 ℃ of lower drawing piece, finally with vulcanizing press, at 170-180 ℃, issue brewed described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer of obtaining.
The composite foamed footwear material formula of table 1 tapioca (flour) (in mass fraction)
Wherein, the concrete proportioning of other auxiliary agents is: 0.8 part of stearic acid, 1.2 parts of Zinic stearass, 3 parts, zinc oxide, 1.6 parts of the fast ripe dose of CH-09 of EVA.
Embodiment 6-10
By the material composition in table 2, form and get each raw material, procedure of processing and processing parameter, with embodiment 1-5, make the composite foamed footwear material of starch dry method graft polyolefin and ethylene octane copolymer.
The composite foamed footwear material formula of table 2 W-Gum (in mass fraction)
Wherein, the concrete proportioning of other auxiliary agents is: 0.8 part of stearic acid, 1.2 parts of Zinic stearass, 3 parts, zinc oxide, the fast ripe dose of CH-091.6 part of EVA.
Embodiment 11-15
By the material composition in table 3, form and get each raw material, procedure of processing and processing parameter, with embodiment 1-5, make the composite foamed footwear material of starch dry method graft polyolefin and ethylene octane copolymer.
The composite foamed footwear material formula of table 3 yam starch (in mass fraction)
Wherein, the concrete proportioning of other auxiliary agents is: 0.8 part of stearic acid, 1.2 parts of Zinic stearass, 3 parts, zinc oxide, the fast ripe dose of CH-091.6 part of EVA.
Claims (8)
1. the composite foamed footwear material of starch dry method graft polyolefin and ethylene octane copolymer, is characterized in that the weight proportion of each component of raw material is as follows: EVA100 part; Elastomerics 10-30 part; Starch 20-120 part; Mineral filler 10-40 part; Softening agent 2-10 part; Whipping agent 6-12 part; Linking agent 1-4 part; Surface treatment agent 0-0.5 part; Other auxiliary agent 1-10 part; Starch initiator ammonium persulfate 0.001-0.005 part; Polyolefin and ethylene octane copolymer initiator B PO is 0.001-0.01 part.
2. the composite foamed footwear material of starch dry method graft polyolefin as claimed in claim 1 and ethylene octane copolymer, is characterized in that the weight proportion of each component of raw material is preferably as follows:
EVA100 part; Elastomerics 20-30 part; Starch 40-100 part; Mineral filler 10-20 part; Softening agent 2-6 part; Whipping agent 7-10 part; Linking agent 2-3 part; Surface treatment agent 0.001-0.1 part; Other auxiliary agent 5-9 part; Starch initiator ammonium persulfate 0.001-0.005 part; Polyolefin and polyolefin elastomer initiator B PO is 0.001-0.01 part.
3. the composite foamed footwear material of starch dry method graft polyolefin as claimed in claim 1 and ethylene octane copolymer, is characterized in that described elastomerics is one or both the mixing in ethylene-octene copolymer (POE), styrene-isoprene-phenylethene (SIS), natural rubber SPR, terpolymer EP rubber; Described starch is tapioca (flour), W-Gum or yam starch; Described mineral filler is kaolin, modified kaolin, talcum powder or modified talc powder; Described softening agent is glycerine; Described whipping agent is Cellmic C 121; Described linking agent is dicumyl peroxide; Described surface treatment agent is silane coupling agent, aluminium titanium composite coupler.
4. the composite foamed footwear material of starch dry method graft polyolefin as claimed in claim 1 and ethylene octane copolymer, it is characterized in that other described auxiliary agents are the mixture of the fast ripe dose of CH-09 of stearic acid, Zinic stearas, zinc oxide and EVA, wherein stearic acid: Zinic stearas: zinc oxide: EVA is fast, and ripe dose of CH09 is 0.6-1:0.8-1.5:2-3:1.5-3 according to the proportioning of weight.
5. the composite foamed footwear material of starch dry method graft polyolefin as claimed in claim 1 and ethylene octane copolymer, is characterized in that the composite foamed footwear material of described starch dry method graft polyolefin and ethylene octane copolymer prepares by the following method: (1) is by the mineral filler that obtains processing after surface treatment agent and mineral filler mixing; (2) starch is mixed with softening agent, obtain the starch of plasticising; (3) starch of plasticising and EVA, elastomerics, the mineral filler of processing, other auxiliary agents, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent are joined to the plasticizing matrix material that is mixed to get starch-grafted Polyolefin and polyolefin elastomer in Banbury mixer, use again mill mixing pulling-on piece, finally with vulcanizing press foaming, make described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer.
6. a method of preparing the composite foamed footwear material of starch dry method graft polyolefin and ethylene octane copolymer, is characterized in that the step of the method is as follows: (1) is by the mineral filler that obtains processing after surface treatment agent and mineral filler mixing; (2) starch is mixed with softening agent, obtain the starch of plasticising; (3) starch of plasticising and EVA, elastomerics, the mineral filler of processing, other auxiliary agents, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent are joined to the plasticizing matrix material that is mixed to get starch-grafted Polyolefin and polyolefin elastomer in Banbury mixer, use again mill mixing pulling-on piece, finally with vulcanizing press foaming, make described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer.
7. the method for preparing starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer as claimed in claim 6, it is characterized in that the specific as follows of the method: (1) with after ethanol or dissolve with methanol surface treatment agent by solution and mineral filler at 60-70 ℃ after high-speed stirring, the mineral filler that obtains processing after placing more than 24h under normal temperature sealed state; (2) starch and softening agent at normal temperatures after high-speed stirring, are obtained to the starch of plasticising; (3) starch of plasticising and EVA, elastomerics, the mineral filler of processing, other auxiliary agents, starch initiator ammonium persulfate, Polyolefin and polyolefin elastomer initiator B PO, whipping agent, linking agent are joined in Banbury mixer to internal mixing and plasticizing 3-10min at 100-140 ℃, be mixed to get the plasticizing matrix material of starch-grafted Polyolefin and polyolefin elastomer, use again mill at 45-90 ℃ of pulling-on piece, finally with vulcanizing press, at 160-200 ℃, issue brewed described starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer of obtaining.
8. the method for preparing starch dry method graft polyolefin and the composite foamed footwear material of ethylene octane copolymer as claimed in claim 6, it is characterized in that wherein step (2) is by starch and softening agent at normal temperatures after high-speed stirring, after placing more than 24h, obtain the starch of plasticising under normal temperature sealed state.
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| CN103497290B (en) * | 2013-09-29 | 2015-04-08 | 成都新柯力化工科技有限公司 | Redispersible polymer latex powder and preparation method thereof |
| CN103709523A (en) * | 2013-12-16 | 2014-04-09 | 芜湖万润机械有限责任公司 | Moldproof bamboo charcoal rubber ring |
| TWI576384B (en) * | 2014-11-25 | 2017-04-01 | 鴻明環保科技股份有限公司 | High plant-sources content eva polymer foam material, producing method and application thereof |
| CN108741404A (en) * | 2018-06-14 | 2018-11-06 | 宁波科邦华诚技术转移服务有限公司 | A kind of foamed shoe sole |
| CN109280224A (en) * | 2018-08-16 | 2019-01-29 | 温州磐石机械设备维修咨询有限公司 | A kind of plastic master batch and preparation method thereof that degradation property is good |
| CN110272579B (en) * | 2019-06-21 | 2022-04-08 | 中国皮革制鞋研究院有限公司 | Preparation method of starch wet-process graft modified composite EVA (ethylene-vinyl acetate copolymer) foamed shoe material |
| CN111944230A (en) * | 2020-08-21 | 2020-11-17 | 江南大学 | Wear-resistant starch-EVA (ethylene vinyl acetate) foamed shoe material and preparation method thereof |
| CN113583333A (en) * | 2021-09-06 | 2021-11-02 | 东莞兆阳兴业塑胶制品有限公司 | Preparation method of degradable foamed shoe material |
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| CN100549082C (en) * | 2006-08-02 | 2009-10-14 | 福州大学 | The preparation method of EVA/PE/ starch composite foam material |
| CN102226015B (en) * | 2011-06-11 | 2013-03-13 | 晋江成昌鞋业有限公司 | Starch composite foamed material and its production method |
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Effective date of registration: 20211126 Address after: 362000 No. 14-1-4, Huaxiang paper industry park, No. 12, Yongjun Road, Sijin village, Xibin Town, Jinjiang City, Quanzhou City, Fujian Province Patentee after: Fujian Zhuo Rui New Material Technology Co.,Ltd. Address before: 350108 new campus of Fuzhou University, No. 2, Xue Yuan Road, University Town, Minhou street, Minhou, Fujian. Patentee before: FUZHOU University |