CN103059400A - Polyethylene/EVA (Ethylene-Vinyl Acetate) coating coconut husk powder particle blending foaming material and preparation method thereof - Google Patents
Polyethylene/EVA (Ethylene-Vinyl Acetate) coating coconut husk powder particle blending foaming material and preparation method thereof Download PDFInfo
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- CN103059400A CN103059400A CN2012105509292A CN201210550929A CN103059400A CN 103059400 A CN103059400 A CN 103059400A CN 2012105509292 A CN2012105509292 A CN 2012105509292A CN 201210550929 A CN201210550929 A CN 201210550929A CN 103059400 A CN103059400 A CN 103059400A
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Abstract
The invention discloses a polyethylene/EVA (Ethylene-Vinyl Acetate) coating coconut husk powder particle blending foaming material, which is prepared from the following raw material according to parts by weight: 60-80 parts of LLDPE, 20-40 parts of HDPE, 30-40 parts of EVA, 10-15 parts of sepiolite, 15-20 parts of water glass, 5-10 parts of coconut husk powder, 1-2 parts of vinyl-tri-(beta-methoxy oxyethyl) silane, 5-8 parts of antimony trioxide, 4-6 parts of triphenyl phosphate, 5-8 parts of trioctyl trimellitate, 3-5 parts of foaming agent, 1-2 parts of 2,4-dichlorobenzoyl peroxide, 0.5-1 parts of zinc stearate, 1-2 parts of zinc oxide, 1-2 parts of lead sulfate tribasic, 2-3 parts of polyethylene wax, 3-5 parts of modified tree ash, and 1-2 parts of antioxidant 264. The polyethylene/EVA (Ethylene-Vinyl Acetate) coating coconut husk powder particle blending foaming material produced in the invention is light and soft, high in strength, good in rebound elasticity, ideal in foaming effect, uniform in foaming, fine and compact, good in fire resistance, resistant to chemical corrosion, ageing-resistant and durable in use.
Description
Technical field
The invention belongs to field of high polymer material processing, be specifically related to a kind of polyethylene/EVA and coat coconut husk particle particle blending foaming material and preparation method thereof.
Background technology
Polyethylene foam-material has excellent physics, chemistry and mechanical property.It is tough, and flexibility is good, and abrasion performance has excellent electrical insulating property, and thermal insulation and chemical resistant properties are widely used in many fields such as packing, chemical industry, building.But polyethylene foam-material also exists the shortcomings such as intensity is low, rebound resilience is poor, abscess is inhomogeneous at present, so it is soft that one of developing direction of polyethylene foam-material is exploitation, flexibility is high, intensity is high, abscess is even, the closed-cell foam grade of tiny densification, simultaneously, each field also proposes corresponding requirement to plastic material fire-retardant.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of excellent mechanical properties that has is provided, the polyethylene that good flame resistance and intensity are high/EVA coats coconut husk particle particle blending foaming material and preparation method thereof.
The technical solution used in the present invention is as follows:
A kind of polyethylene/EVA coats coconut shell flour particle particle blending foaming material, raw material by following weight part is made: LLDPE 60-80, HDPE 20-40, EVA 30-40, sepiolite 10-15, water glass 15-20, coconut shell flour 5-10, vinyl three ('beta '-methoxy oxyethyl group) silane 1-2, antimonous oxide 5-8, triphenylphosphate 4-6, trioctyl trimellitate 5-8, whipping agent 3-5,2,4-dichlorobenzoperoxide 1-2, Zinic stearas 0.5-1, zinc oxide 1-2, lead sulfate tribasic 1-2, polyethylene wax 2-3, modification trees ashes 3-5, antioxidant 264 1-2.
The granularity of described coconut shell flour is the 50-100 order.
Described whipping agent is comprised of the raw material of following weight part: Cellmic C 121 15-20, N, N '-dinitrosopentamethylene tetramine 5-10, sodium bicarbonate 4-6, cyanuric acid zinc 3-5, polyoxyethylenated alcohol sodium sulfate 3-5, tetramethylolmethane 8-12.
Described modification trees ashes are made by following method: boil trees ashes 20-30min with the 15-20% hydrogen peroxide first, clean with distilled water again, place 110-120 ℃ drying in oven, add and be equivalent to the sodium lignosulfonate of trees ashes weight 2-3%, the polyisobutene of 2-3%, the paregal O of 1-2%, the talcum powder of 4-6%, stir 2-3h 80-90 ℃ of water-bath high speed, oven dry, pulverizing grinds to form ultrafine powder and gets final product.
The total weight parts of described LLDPE and HDPE is 100.
Polyethylene/EVA coats the preparation method of coconut husk particle particle blending foaming material, may further comprise the steps:
(1) sepiolite is dry, pulverizing, after crossing the 100-150 mesh sieve, add in the high-speed mixer with vinyl three ('beta '-methoxy oxyethyl group) silane, speed with 500-800rpm under 105-110 ℃ mixes 20-30min, after adding again water glass continuation stirring 10-15min, then add coconut shell flour with the speed blend 5-10min of 1000-1500rpm, send into granulation in the tablets press after the oven dry, particle diameter is controlled at 0.2-0.4mm, namely gets coconut shell flour and coats sepiolite particle;
(2) EVA is added in the twin screw extruder, be warming up to 120-130 ℃, when treating that it becomes molten state, add the coconut shell flour coating sepiolite particle that step (1) makes, melt blending 10-20min under the rotating speed of 400-600rpm, then extruding pelletization is cooled to normal temperature and namely gets EVA coating coconut husk particle particle;
(3) EVA that LDPE, LLDPE and step (2) is made coats coconut shell flour particle particle and adds together in the high speed mixer, at 40-60 ℃ of lower high-speed mixing 5-10min, then add successively antimonous oxide, triphenylphosphate, trioctyl trimellitate, whipping agent, 2, all the other raw materials such as 4-dichlorobenzoperoxide continue to mix the 10-15min discharging;
(4) material of step (3) gained is sent in the Banbury mixer plastified, plasticization temperature is 100-110 ℃, and fusion time is 3-5min, then the material with gained is transferred to further plasticizing in two roller open mills, plasticization temperature is 105-115 ℃, and fusion time is 5-8min
(5) will plastify good material and be sent on the four roller plastic calenders, be 120-130 ℃ at roll surface temperature, and calender speed is under the condition of 30-50m/min, and compound is rolled into the film that thickness is 0.5-0.8mmm;
(6) film that is rolled into is directly fitted on the base cloth by roll-in according to ordinary method, coil into work in-process by the traction of traction winder after the deburring, then foaming in the foaming furnace is sent in the traction of web-like work in-process, blowing temperature is 170-190 ℃, and foamed time is 2-3min;
(7) after the foaming of web-like work in-process, roll stamp at grain roller and process, be cooled to room temperature, batch the acquisition finished product through deburring.
Beneficial effect of the present invention:
The present invention is by carrying out modification to the trees ashes, trees ashes and poly interface binding intensity have obviously been improved, under external force, modification trees ashes particle plays the effect of bearing stress and dispersive stress effectively in foam material, and bring out matrix resin generation plastic deformation, thereby the mechanical properties such as tensile strength, shock strength and modulus in flexure of foam material have been improved.The present invention passes through formula adjustment and process modification, utilize coconut shell flour to coat sepiolite, make the coconut shell flour particle, coat the coconut shell flour particle with EVA again, twice coating can obviously improve sepiolite and poly consistency, the coconut shell flour particle can improve the structure of foam material simultaneously, obtains higher bubble density and less cell diameter, thereby improves shock strength and the physical and mechanical properties of foam material.The polyethylene that the present invention produces/EVA coats coconut shell flour particle blending foaming material light weight softness, intensity is high, rebound resilience good, foaming effect ideal, even, the tiny densification of abscess, good flame resistance, and resistance to chemical attack, ageing-resistant, durable in use.
Embodiment
Embodiment
A kind of polyethylene/EVA coats coconut husk particle particle blending foaming material, raw material by following weight part is made: 75 parts of LLDPE, 25 parts of HDPE, 36 parts of EVA, 15 parts of sepiolites, 20 parts of water glass, 10 parts of coconut shell flours, 1.5 parts in vinyl three ('beta '-methoxy oxyethyl group) silane, 6 parts of antimonous oxides, 5 parts of triphenylphosphates, 6 parts of trioctyl trimellitates, 4 parts of whipping agents, 1.5 parts of 2,4-dichlorobenzoperoxides, 0.8 part of Zinic stearas, 1 part in zinc oxide, 2 parts of lead sulfate tribasics, 2 parts of polyethylene waxs, 4 parts in modification trees ashes, 1.5 parts of antioxidant 264s.
Wherein, the granularity of described coconut shell flour is 80 orders.
Described whipping agent is comprised of the raw material of following weight part: 18 parts of Cellmic C 121s, N, N '-8 parts of dinitrosopentamethylene tetramines, 5 parts of sodium bicarbonates, 4 parts on cyanuric acid zinc, 4 parts of polyoxyethylenated alcohol sodium sulfate, 10 parts of tetramethylolmethanes.
Described modification trees ashes are made by following method: boil trees ashes 25min with 18% hydrogen peroxide first, clean with distilled water again, place 115 ℃ drying in oven, add and be equivalent to the sodium lignosulfonate of trees ashes weight 2.5%, 2% polyisobutene, 1.5% paregal O, 5% talcum powder, stir 3h 85 ℃ of water-bath high speeds, oven dry, pulverizing grinds to form ultrafine powder and gets final product.
Polyethylene/EVA coats the preparation method of coconut husk particle particle blending foaming material, may further comprise the steps:
(1) sepiolite is dry, pulverizing, after crossing 100 mesh sieves, add in the high-speed mixer with vinyl three ('beta '-methoxy oxyethyl group) silane, speed with 600rpm under 110 ℃ mixes 30min,, add again after water glass continue to stir 15min, then add coconut shell flour with the speed blend 6min of 1500rpm, send into granulation in the tablets press after the oven dry, particle diameter is controlled at 0.3mm, namely gets coconut shell flour and coats sepiolite particle;
(2) EVA is added in the twin screw extruder, be warming up to 125 ℃, when treating that it becomes molten state, add the coconut shell flour coating sepiolite particle that step (1) makes, melt blending 15min under the rotating speed of 500rpm, then extruding pelletization is cooled to normal temperature and namely gets EVA coating coconut husk particle particle;
(3) EVA that LLDPE, HDPE and step (2) is made coats coconut shell flour particle particle and adds together in the high speed mixer, at 50 ℃ of lower high-speed mixing 8min, then add successively antimonous oxide, triphenylphosphate, trioctyl trimellitate, whipping agent, 2, all the other raw materials such as 4-dichlorobenzoperoxide continue to mix the 12min discharging;
(4) material of step (3) gained is sent in the Banbury mixer plastified, plasticization temperature is 105 ℃, and fusion time is 4min, then the material with gained is transferred to further plasticizing in two roller open mills, plasticization temperature is 110 ℃, and fusion time is 6min
(5) will plastify good material and be sent on the four roller plastic calenders, be 125 ℃ at roll surface temperature, and calender speed is under the condition of 40m/min, and compound is rolled into the film that thickness is 0.6mmm;
(6) film that is rolled into is directly fitted on the base cloth by roll-in according to ordinary method, coil into work in-process by the traction of traction winder after the deburring, then foaming in the foaming furnace is sent in the traction of web-like work in-process, blowing temperature is 180 ℃, and foamed time is 3min;
(7) after the foaming of web-like work in-process, roll stamp at grain roller and process, be cooled to room temperature, batch the acquisition finished product through deburring.
The performance test of the polyethylene that the present invention produces/EVA coating coconut husk particle particle blending foaming material is as shown in the table:
| Test item | The result |
| Tensile strength (MPa) | 6.3 |
| Shock strength (kJm -2） | 12.5 |
| Impact rebound degree (%) | 45 |
| Tear strength (kNm -1） | 132 |
| Elongation at break (%) | 194 |
| Compression set (%) | 21.8 |
| Modulus in flexure (MPa) | 145 |
Claims (6)
1. polyethylene/EVA coats coconut husk particle particle blending foaming material, it is characterized in that, raw material by following weight part is made: LLDPE 60-80, HDPE 20-40, EVA 30-40, sepiolite 10-15, water glass 15-20, coconut shell flour 5-10, vinyl three ('beta '-methoxy oxyethyl group) silane 1-2, antimonous oxide 5-8, triphenylphosphate 4-6, trioctyl trimellitate 5-8, whipping agent 3-5,2,4-dichlorobenzoperoxide 1-2, Zinic stearas 0.5-1, zinc oxide 1-2, lead sulfate tribasic 1-2, polyethylene wax 2-3, modification trees ashes 3-5, antioxidant 264 1-2.
2. polyethylene according to claim 1/EVA coats coconut husk particle particle blending foaming material, it is characterized in that the granularity of described coconut shell flour is the 50-100 order.
3. polyethylene according to claim 1/EVA coats coconut husk particle particle blending foaming material, it is characterized in that, described whipping agent is comprised of the raw material of following weight part: Cellmic C 121 15-20, N, N '-dinitrosopentamethylene tetramine 5-10, sodium bicarbonate 4-6, cyanuric acid zinc 3-5, polyoxyethylenated alcohol sodium sulfate 3-5, tetramethylolmethane 8-12.
4. polyethylene according to claim 1/EVA coats coconut husk particle particle blending foaming material, it is characterized in that, described modification trees ashes are made by following method: boil trees ashes 20-30min with the 15-20% hydrogen peroxide first, clean with distilled water again, place 110-120 ℃ drying in oven, add and be equivalent to the sodium lignosulfonate of trees ashes weight 2-3%, the polyisobutene of 2-3%, the paregal O of 1-2%, the talcum powder of 4-6%, stir 2-3h 80-90 ℃ of water-bath high speed, oven dry, pulverizing grinds to form ultrafine powder and gets final product.
5. polyethylene according to claim 1/EVA coats coconut shell flour particle blending foaming material, it is characterized in that the total weight parts of described LLDPE and HDPE is 100.
6. a polyethylene as claimed in claim 1/EVA coats the preparation method of coconut husk particle particle blending foaming material, it is characterized in that may further comprise the steps:
(1) sepiolite is dry, pulverizing, after crossing the 100-150 mesh sieve, add in the high-speed mixer with vinyl three ('beta '-methoxy oxyethyl group) silane, speed with 500-800rpm under 105-110 ℃ mixes 20-30min, after adding again water glass continuation stirring 10-15min, then add coconut shell flour with the speed blend 5-10min of 1000-1500rpm, send into granulation in the tablets press after the oven dry, particle diameter is controlled at 0.2-0.4mm, namely gets coconut shell flour and coats sepiolite particle;
(2) EVA is added in the twin screw extruder, be warming up to 120-130 ℃, when treating that it becomes molten state, add the coconut shell flour coating sepiolite particle that step (1) makes, melt blending 10-20min under the rotating speed of 400-600rpm, then extruding pelletization is cooled to normal temperature and namely gets EVA coating coconut husk particle particle;
(3) EVA that LLDPE, HDPE and step (2) is made coats coconut shell flour particle particle and adds together in the high speed mixer, at 40-60 ℃ of lower high-speed mixing 5-10min, then add successively antimonous oxide, triphenylphosphate, trioctyl trimellitate, whipping agent, 2, all the other raw materials such as 4-dichlorobenzoperoxide continue to mix the 10-15min discharging;
(4) material of step (3) gained is sent in the Banbury mixer plastified, plasticization temperature is 100-110 ℃, and fusion time is 3-5min, then the material with gained is transferred to further plasticizing in two roller open mills, plasticization temperature is 105-115 ℃, and fusion time is 5-8min
(5) will plastify good material and be sent on the four roller plastic calenders, be 120-130 ℃ at roll surface temperature, and calender speed is under the condition of 30-50m/min, and compound is rolled into the film that thickness is 0.5-0.8mmm;
(6) film that is rolled into is directly fitted on the base cloth by roll-in according to ordinary method, coil into work in-process by the traction of traction winder after the deburring, then foaming in the foaming furnace is sent in the traction of web-like work in-process, blowing temperature is 170-190 ℃, and foamed time is 2-3min;
(7) after the foaming of web-like work in-process, roll stamp at grain roller and process, be cooled to room temperature, batch the acquisition finished product through deburring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210550929.2A CN103059400B (en) | 2012-12-18 | 2012-12-18 | Polyethylene/EVA coated coconut husk granule particles blending foaming material and preparation method thereof |
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| CN201210550929.2A CN103059400B (en) | 2012-12-18 | 2012-12-18 | Polyethylene/EVA coated coconut husk granule particles blending foaming material and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020143083A1 (en) * | 2001-03-30 | 2002-10-03 | Korney Arthur F. | Flexible wood composition |
| WO2011125008A1 (en) * | 2010-04-08 | 2011-10-13 | Fitt S.P.A. | Eco-friendly plasticized pvc compound and its use for manufacturing a flexible hose |
| CN102241846A (en) * | 2011-04-18 | 2011-11-16 | 刘立文 | Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof |
| CN102690459A (en) * | 2012-04-27 | 2012-09-26 | 华东理工大学 | High-resilience chemical crosslinked polyethylene foam material and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020143083A1 (en) * | 2001-03-30 | 2002-10-03 | Korney Arthur F. | Flexible wood composition |
| WO2011125008A1 (en) * | 2010-04-08 | 2011-10-13 | Fitt S.P.A. | Eco-friendly plasticized pvc compound and its use for manufacturing a flexible hose |
| CN102241846A (en) * | 2011-04-18 | 2011-11-16 | 刘立文 | Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof |
| CN102690459A (en) * | 2012-04-27 | 2012-09-26 | 华东理工大学 | High-resilience chemical crosslinked polyethylene foam material and preparation method thereof |
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Effective date of registration: 20190107 Address after: 362200 Yuejin Village, Xibin Town, Jinjiang City, Quanzhou City, Fujian Province Patentee after: Jinjiang Shida Plastic Fine Co., Ltd. Address before: 239236 18 Gaoxin Road, Cha He New District, Lai An county, Chuzhou, Anhui Patentee before: 63975 Forces, PLA |