CN1865334A - Preparation method of EVA/plant fiber foamed composite material for shoes - Google Patents
Preparation method of EVA/plant fiber foamed composite material for shoes Download PDFInfo
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Abstract
The invention discloses a preparing method of EVS plant fiber foaming composite shoe material, which is characterized by the following: setting EVA as main material, plant fiber powder and inorganic powder material as auxiliary; matching cross linker, auxiliary cross linker, foaming agent AC, organic silicon wool sanforizing agent CS, plasticizer and surface additive. The preparing course comprises the following steps: grinding the plant fiber; drying; putting the fiber in the high-speed stirrer to knead; removing water; proceeding surface active disposal; adding the prepared material with EVA, surface additive A and other materials in the closed-smelting machine; squeezing the grain to produce high foaming composite shoe material of EVA plant fiber.
Description
Technical field
The invention provides a kind of preparation method of EVA/ plant fiber foamed composite material for shoes.
Background technology
Common in the market foaming EVA material for sole of shoe generally all forms with lime carbonate and EVA and other properties-correcting agent (as chemical substances such as POE, PE, BR) blend extruding pelletization, exist addition few, rebound resilience is poor, easily compression set, defective such as easily become fragile, crack.Over past ten years, domestic each manufacturing enterprise is in order to widen or keep the market area of self, pay attention to the reduction of material cost, take to add regeneration EVA, other cheap elastomer material or increase the addition of inorganic materials or utilize means such as eva foam footwear reclaimed materials, make low-cost, low-grade footwear.Pursuing low cost simply, and do not pay attention to the high brand footwear of supervene value, is the common fault of China's shoe industry.Though China is footwear big export country, brand footwear quantity is few.
Summary of the invention
The objective of the invention is to provide a kind of preparation method of EVA/ plant fiber foamed composite material for shoes, use the product material that this method prepares not only density is low, good springiness, anti-deflection, be difficult for compression set but also production cost is low.
Preparation method of the present invention is achieved in that with EVA to be main raw material, is auxiliary material with vegetable fibre and inorganic powder, and is equipped with linking agent, additional crosslinker, whipping agent, softening agent, sanforzing agent and surface treatment agent; Its preparation process is: vegetable fibre is pulverized, dried; insert homogenizer again; add surface treatment agent B; carry out surface activation process; then with EVA, surface treatment agent A and other raw material join mediate in the Banbury mixer mixing; surface treatment agent A and EVA produce the chemical graft reaction in the mixing process; improve the bond properties between vegetable fibre and EVA two-phase interface; put into single screw extruder pelletizer group when mixing plasticizing is complete and carry out granulation, prepare the high foamed composite material for shoes of EVA/ vegetable fibre.
The present invention utilizes vegetable fibre and EVA resin alloys such as the stem, branch, root, skin of wood sawdust, bamboo powder, tangerine bar, husk, rice bar, bagasse and plant, and add environment-friendly modified dose of linking agent, whipping agent, softening agent, surface treatment agent A, surface treatment agent B, anti-shrinking medium etc., make the EVA/ plant fiber foamed composite material for shoes by specific technical process.Have low, the anti-deflection of density, rebound resilience is good, compression set is little and over-all properties such as stripping strength height, this material can be widely used in the production of making sneakers, sports shoes, beach shoes, slippers etc., have novel peculiar outward appearance, dress soft comfortable, characteristics such as marvellous walking sense, heat insulation absorbing sweat are arranged.The preparation of this material helps China to set up higher environment and technological standard, reaches the unified standard level that European Union carries out, and alleviates present Chinese footwear and exports the phenomenon of being obstructed.Therefore developing this series products has extensive market prospects and favorable social and economic benefits.
Embodiment
Preparation method of the present invention is: being main raw material with EVA, is auxiliary material with vegetable fibre and inorganic powder, and is equipped with linking agent, additional crosslinker, whipping agent, silicone based wool shrinkproof agent CS and surface treatment agent; Its preparation process is: vegetable fibre is pulverized, dried; insert homogenizer again; add surface treatment agent B; carry out surface activation process; then with EVA, surface treatment agent A and other raw material join mediate in the Banbury mixer mixing; the chemical graft reaction takes place in surface treatment agent A and EVA in the mixing process; improve the bond properties between vegetable fibre and EVA two-phase interface; put into single screw extruder pelletizer group when mixing plasticizing is complete and carry out granulation, prepare the high foamed composite material for shoes of EVA/ vegetable fibre.
The weight proportion of each component of above-mentioned raw materials is as follows: the vegetable fibre powder accounts for 1%～40% of total amount; EVA accounts for 40%～80% of total amount, and one or more fibers in the stem of plant, branch, the skin account for 1～10% of total amount; Inorganic powder is CaCO
3Or the two mixture of wilkinite or its, account for 0～20% of total amount; Linking agent is dicumyl peroxide (DCP), accounts for 0.8～1.2% of total amount; Additional crosslinker is triallyl isocyanurate (TAIC), accounts for 0.2～1.0% of total amount; Whipping agent A is Cellmic C 121 (AC), accounts for 2～6% of total amount; Whipping agent B is NaHCO
3Account for 1～2% of total amount; Surface treatment agent A is that compound (vinylbenzene: surface treatment agent MALEIC ANHYDRIDE=1: 2.5) accounts for total amount 1～3% for vinylbenzene and MALEIC ANHYDRIDE; Surface treatment agent B is a silane coupling agent, accounts for total amount 1～2%; Sanforzing agent is organopolysiloxane (CS), accounts for total amount 0.5～2%; ZnO accounts for total amount 0～1.5%; Zinic stearas accounts for total amount 0～1.5%; Softening agent is a naphthenic oil, accounts for total amount 5～10%.
In order to ensure the quality of product and help processing, described its particle diameter of vegetable fibre powder is less than 175 μ m, and needs drying, dries and surface-active-treatment.Be that described vegetable fibre is pulverized the first drying in back, then insert homogenizer, add surface treatment agent B, mediate at a high speed and handle, obtain the vegetable fibre of surface-active-treatment.Simultaneously in order to improve the bond properties between vegetable fibre and EVA interlaminar resin two-phase interface, we mediate interpolation surface treatment agent A when mixing in vegetable fibre and EVA and other modified additives adding Banbury mixer, EVA is carried out grafting modification.
During banburying, described Banbury mixer processing parameter is that temperature is controlled in 100 ℃ to raw material in Banbury mixer, till material is mediated evenly in Banbury mixer.
In single screw extrusion machine when work,, described single screw extrusion machine processing parameter is: first district's temperature is---90 ℃, second district's temperature is---90 ℃, the 3rd district's temperature is---100 ℃, die head temperature---be 95 ℃.
The present invention adopts any for base-material in wood sawdust, bamboo powder, sweet screening slag, husk, the rice bar, can make the different high foamed composite material for shoes of EVA/ vegetable fibre, and its composition of raw materials is selected for use following any:
(1) wood sawdust: in prescription, the ratio of wood sawdust is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.Wherein, inorganic powder is 0～5%CaCO
3With 0～5% bentonitic mixture; Multiple crosslinking agent is the mixture of 0.8～1.2%%DCP and 0.2～1.0%TAIC; Composite foamable agent is the mixture of 2～6% whipping agent A and 1～2% whipping agent B; Other auxiliary agent is 1～3% surface treatment agent A, 1～2% surface treatment agent B, 0.5～2% sanforzing agent, 0～1.5% zinc oxide, 0～1.5% Zinic stearas, 5～10% softening agent, below identical.
(2) bamboo powder: in prescription, the ratio of bamboo powder is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(3) sweet screening slag: in prescription, the ratio of sweet screening slag is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(4) husk: in prescription, the ratio of husk is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(5) rice bar: in prescription, the ratio of rice bar is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～70%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
In addition, the present invention can suit measures to local conditions to utilize other vegetable fibre such as tangerine bar etc., produces the high foamed composite material for shoes of EVA/ vegetable fibre.
As utilize the Chinese medicinal plant fiber to make the high foamed composite material for shoes of EVA/ vegetable fibre, the material for shoes that can produce deodorizing, cure the disease or keep healthy.
Innovative point of the present invention:
(1) adopt the compound preparation foaming shoe material of vegetable fibre and EVA at home first, and over-all properties is good, has novelty.According to the update search result, the compound of chemical substances such as EVA and PE, POE, BR mostly adopted in the development of the composite foamed material for shoes of present domestic EVA.
(2) it is relatively poor to contain the compound footwear material of the EVA flowing property of vegetable fibre, under the effect of shearing force, produces a large amount of frictional heat in the extruding pelletization process, causes vegetable fibre embrittlement, carbonization easily, makes the composite material combination property variation.This project is used surface treatment agent B, surface treatment agent A, softening agent, has improved the flowing property of compound footwear material greatly.Has novelty in flowing property aspect improving.
(3) composite foamable agent of Cai Yonging has novelty.Usually the whipping agent that uses of the composite foamed footwear material of EVA is the AC whipping agent, and the AC whipping agent belongs to heat release type whipping agent, can produce a large amount of heats during decomposition, causes that easily vegetable fibre crosses thermosteresis good mechanical performance.The composite foamable agent that this project is used is based on heat release type blowing agent AC, cooperates endothermic blowing agent NaHCO
3, material temperature when decomposing to reduce whipping agent.
Below for adopting the embodiment of different filamentary materials:
Embodiment one
Present embodiment has specifically described the preparation process of the high foamed composite material for shoes of EVA/ rice rod fibers; the tangerine bar is ground into below the 175 μ m; after the drying; insert homogenizer again and carry out surface activation process; then with EVA and other raw material join carry out in the Banbury mixer mixing; put into single screw extruder pelletizer group when mixing plasticizing is complete and carry out granulation, prepare the high foamed composite material for shoes of EVA/ vegetable fibre.Concrete prescription sees Table 1.The Banbury mixer processing parameter: temperature is controlled in 100 ℃, till material is mediated evenly in Banbury mixer.The single screw extrusion machine processing parameter is: 90 ℃ of first district's temperature, 90 ℃ of second district's temperature, 100 ℃ of the 3rd district's temperature, 95 ℃ of die head temperatures.
The high foamed composite material for shoes blend prescription of table 1 EVA/ rice rod fibers
| The blend material | Rice bar (containing stem, root etc.) | EVA | Inorganic powder | Multiple crosslinking agent | Composite foamable agent | Other auxiliary agent |
| Ratio % | 20 | 65 | 5 | 1.2 | 4 | 15 |
| 30 | 55 | 5 | 1.1 | 3 | 15 | |
| 50 | 35 | 5 | 1.1 | 3 | 15 |
Embodiment two
That embodiment two narrates is the preparation method of the high foamed composite material for shoes of EVA/ husk fiber, and procedure of processing and processing parameter are with embodiment one, and the blend prescription is as shown in table 2.
The high foamed composite material for shoes blend prescription of table 2 EVA/ husk fiber
| The blend material | Husk (containing stem, root etc.) | EVA | Inorganic powder | Multiple crosslinking agent | Composite foamable agent | Other auxiliary agent |
| Ratio % | 20 | 65 | 5 | 1.2 | 4 | 15 |
| 30 | 55 | 5 | 1.1 | 3 | 15 | |
| 50 | 35 | 5 | 1.1 | 3 | 15 |
Embodiment three
What embodiment three narrated is the manufacture method of the high foamed composite material for shoes of EVA/ wood sawdust fiber, and procedure of processing and processing parameter are with embodiment one, and the blend prescription is as shown in table 3.
The high foamed composite material for shoes blend prescription of table 3 EVA/ wood sawdust fiber
| The blend material | Wood sawdust (containing stem, root etc.) | EVA | Inorganic powder | Multiple crosslinking agent | Composite foamable agent | Other auxiliary agent |
| Ratio % | 20 | 65 | 5 | 1.2 | 4 | 15 |
| 30 | 55 | 5 | 1.1 | 3 | 15 | |
| 50 | 35 | 5 | 1.1 | 3 | 15 |
Embodiment four
What embodiment four narrated is the manufacture method of the high foamed composite material for shoes of EVA/ bamboo fibers, and procedure of processing and processing parameter are with embodiment one, and the blend prescription is as shown in table 4.
The high foamed composite material for shoes blend prescription of table 4 EVA/ bamboo fibers
| The blend material | Bamboo powder (containing stem, root etc.) | EVA | Inorganic powder | Multiple crosslinking agent | Composite foamable agent | Other auxiliary agent |
| Ratio % | 20 | 65 | 5 | 1.2 | 4 | 15 |
| 30 | 55 | 5 | 1.1 | 3 | 15 | |
| 50 | 35 | 5 | 1.1 | 3 | 15 |
The present invention is novel, and is reasonable in design, has bigger application value.
Claims (9)
1. the preparation method of an EVA/ plant fiber foamed composite material for shoes, it is characterized in that: being main raw material with EVA, is auxiliary material with vegetable fibre and inorganic powder, and is equipped with linking agent, additional crosslinker, whipping agent, sanforzing agent and surface treatment agent; Its preparation process is: vegetable fibre is pulverized, dried; inserting homogenizer again mediates at a high speed; add surface treatment agent B; carry out surface activation process; then with EVA, surface treatment agent A and other raw material join mediate in the Banbury mixer mixing; put into single screw extruder pelletizer group when mixing plasticizing is complete and carry out granulation, prepare the high foamed composite material for shoes of EVA/ vegetable fibre.
2. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 1 is characterized in that: the weight proportion of each component of raw material is as follows: the vegetable fibre powder accounts for 1%～40% of total amount; EVA accounts for 40%～80% of total amount, and one or more fibers in the stem of plant, branch, the skin account for 1～10% of total amount; Inorganic powder is the two a mixture of CaCO3 or wilkinite or its, accounts for 0～20% of total amount; Linking agent is dicumyl peroxide (DCP), accounts for 0.8～1.2% of total amount; Additional crosslinker is triallyl isocyanurate (TAIC), accounts for 0.2～1.0% of total amount; Whipping agent A is Cellmic C 121 (AC), accounts for 2～6% of total amount; Whipping agent B be NaHCO3 account for total amount 1～2%; Surface treatment agent A is that compound (vinylbenzene: surface treatment agent MALEIC ANHYDRIDE=1: 2.5) accounts for total amount 1～3% for vinylbenzene and MALEIC ANHYDRIDE; Surface treatment agent B is a silane coupling agent, accounts for total amount 1～2%; Sanforzing agent is organopolysiloxane (CS), accounts for total amount 0.5～2%; ZnO accounts for total amount 0～1.5%; Zinic stearas accounts for total amount 0～1.5%; Softening agent is a naphthenic oil, accounts for total amount 5～10%.
3. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 1 and 2 is characterized in that: described its particle diameter of vegetable fibre powder is less than 175 μ m, needs drying and handles with surface treatment agent B.
4. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 3, it is characterized in that: described vegetable fibre is pulverized the first drying in back, put into the high speed kneader again, add surface treatment agent B and handle 5min～20min, obtain the active vegetable fibre of handling.
5. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 1 is characterized in that: described Banbury mixer processing parameter is that temperature is controlled in 100 ℃, till material is mediated evenly in Banbury mixer.
6. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 1, it is characterized in that: described single screw extrusion machine processing parameter is: first district's temperature is 90 ℃, second district's temperature is 90 ℃, and the 3rd district's temperature is 100 ℃, and die head temperature is 95 ℃.
7. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 1, it is characterized in that: can adopt a kind of for base-material in wood sawdust, bamboo powder, sweet screening slag, husk, the rice bar, draw the different high foamed composite material for shoes of EVA/ vegetable fibre, it specifically fills a prescription as follows:
(1) wood sawdust: in prescription, the ratio of wood sawdust is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.Wherein, inorganic powder is 0～5%CaCO3 and 0～5% bentonitic mixture; Multiple crosslinking agent is the mixture of 0.8～1.2%DCP and 0.2～1.0%TAIC; Composite foamable agent is the mixture of 2～6% whipping agent A and 1～2% whipping agent B; Other auxiliary agent is 1～3% surface treatment agent A, 1～2% surface treatment agent B, 0.5～2% sanforzing agent, 0～1.5% zinc oxide, 0～1.5% Zinic stearas, 5～10% softening agent, below identical.
(2) bamboo powder: in prescription, the ratio of bamboo powder is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(3) sweet screening slag: in prescription, the ratio of sweet screening slag is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(4) husk: in prescription, the ratio of husk is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(5) rice bar: in prescription, the ratio of rice bar is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～70%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
8. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 3, it is characterized in that: can adopt a kind of for base-material in wood sawdust, bamboo powder, sweet screening slag, husk, the rice bar, draw the different high foamed composite material for shoes of EVA/ vegetable fibre, it specifically fills a prescription as follows:
(1) wood sawdust: in prescription, the ratio of wood sawdust is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(2) bamboo powder: in prescription, the ratio of bamboo powder is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(3) sweet screening slag: in prescription, the ratio of sweet screening slag is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(4) husk: in prescription, the ratio of husk is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～80%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
(5) rice bar: in prescription, the ratio of rice bar is 1～40%, the ratio of fibers such as the stem of plant, branch, root, skin is 1～10%, the ratio of EVA is 40～70%, also comprise inorganic powder 0～20% in the batching, multiple crosslinking agent 1.0～2.2%, composite foamable agent 3～6%, other auxiliary agent 7.5～20%.
9. the preparation method of EVA/ plant fiber foamed composite material for shoes according to claim 1 is characterized in that: also can utilize other vegetable fibre such as tangerine bar etc., make the high foamed composite material for shoes of EVA/ vegetable fibre.
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| CN101787172A (en) * | 2010-03-12 | 2010-07-28 | 杭州电子科技大学 | Preparation method of EVA sole surface treating agent |
| CN102277747A (en) * | 2011-07-19 | 2011-12-14 | 吴江多艺纺织有限公司 | Treatment method for preventing shrinkage of wool fabric |
| CN102382573A (en) * | 2011-10-11 | 2012-03-21 | 徐梅 | Low-cost environmentally-friendly interior wall paint |
| CN102382572A (en) * | 2011-10-11 | 2012-03-21 | 徐梅 | Preparation process of low-cost environment-friendly inner wall coating |
| CN102786734A (en) * | 2012-07-24 | 2012-11-21 | 福州大学 | Composite foamed shoe material formed by polyolefin and polyolefin elastomers grafted with starch in dry process |
| WO2013053189A1 (en) * | 2011-10-11 | 2013-04-18 | 李宁（中国）体育用品有限公司 | Modified eva foam and preparation method and use thereof |
| CN103122099A (en) * | 2013-03-09 | 2013-05-29 | 晋江市五里艇源鞋塑有限公司 | Sawdust-containing beach slipper material and preparation method thereof |
| CN103910925A (en) * | 2014-04-21 | 2014-07-09 | 南京东亚橡塑制品有限公司 | Smellless EVA (ethylene-vinyl acetate) material used as shoe sole and preparation method thereof |
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| CN105924761A (en) * | 2016-06-27 | 2016-09-07 | 湖北福力德鞋业有限责任公司 | Plant fiber powder modified EVA (ethylene-vinyl acetate) composite foam material and preparation method for same |
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| CN113462066A (en) * | 2021-07-12 | 2021-10-01 | 东莞市丞冠运动用品科技有限公司 | Formula and preparation process of EVA (ethylene vinyl acetate) or LDPE (low-density polyethylene) bamboo fiber foaming material |
| CN114276583A (en) * | 2021-11-24 | 2022-04-05 | 深圳国至新材料科技有限公司 | Degradable foaming slipper material with high starch content and preparation method thereof |
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| CN101787172A (en) * | 2010-03-12 | 2010-07-28 | 杭州电子科技大学 | Preparation method of EVA sole surface treating agent |
| CN102277747A (en) * | 2011-07-19 | 2011-12-14 | 吴江多艺纺织有限公司 | Treatment method for preventing shrinkage of wool fabric |
| CN102382572B (en) * | 2011-10-11 | 2016-05-18 | 华文蔚 | A kind of preparation technology of low-cost environmental-protecting interior wall coating |
| CN102382573A (en) * | 2011-10-11 | 2012-03-21 | 徐梅 | Low-cost environmentally-friendly interior wall paint |
| CN102382572A (en) * | 2011-10-11 | 2012-03-21 | 徐梅 | Preparation process of low-cost environment-friendly inner wall coating |
| WO2013053189A1 (en) * | 2011-10-11 | 2013-04-18 | 李宁（中国）体育用品有限公司 | Modified eva foam and preparation method and use thereof |
| CN102382573B (en) * | 2011-10-11 | 2016-05-18 | 华文蔚 | A kind of low-cost environmental-protecting interior wall coating |
| CN102786734A (en) * | 2012-07-24 | 2012-11-21 | 福州大学 | Composite foamed shoe material formed by polyolefin and polyolefin elastomers grafted with starch in dry process |
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