CN102991403B - Compartment body plate for refrigerated truck and preparation method of compartment body plate - Google Patents
Compartment body plate for refrigerated truck and preparation method of compartment body plate Download PDFInfo
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- CN102991403B CN102991403B CN201210556226.0A CN201210556226A CN102991403B CN 102991403 B CN102991403 B CN 102991403B CN 201210556226 A CN201210556226 A CN 201210556226A CN 102991403 B CN102991403 B CN 102991403B
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Abstract
The invention discloses a compartment body plate for a refrigerated truck. The compartment body plate is formed by compounding glass fibre reinforced polypropylene panels on the upper surface and the lower surface of a polypropylene foam plate, wherein the polypropylene foam plate is formed by following foaming raw materials in ratio by mass: 100 parts of modified polypropylene, 5-10 parts of modified polyethylene, 0.2-1.5 parts of a nucleating agent, 5-10 parts of a foaming agent, and 0.2-1.5 parts of a foam stabilizing agent. The invention further discloses a preparation method of the plate. The plate adopting the technical scheme is light and environment-friendly, not easy to deform, high in mechanical property, simple and convenient in splicing mode, excellent in heat-insulating performance, low in cost, and capable of meeting the needs on the compartment body plates for the conventional refrigerated trucks.
Description
Technical field
The invention belongs to van cooler manufacturing technology field and macromolecule foaming field of compound material, particularly relate to refrigeration car carriage sheet material and preparation method thereof.
Background technology
Van cooler is the key equipment of an important step in low temperature Cold Chain Logistics.It is ensure key point that is perishable, the safety of fresh-keeping foodstuff in transportation that van cooler reliable operation, performance in refrigerated transport process are stablized.Road transport van cooler is made up of car chassis, insulation envelope, refrigerating unit three part usually.Wherein heat-insulation and heat-preservation envelope is spliced by core filled composite material plate material, and its sheet material is generally composited by polyurethane heat-insulation core and glass-felt plastic, color steel, stainless steel faceplate etc.
Present stage, refrigerator carriage body manufacturing technology was mainly following several: " sandwich " plate that 1, burst is assembled is adhered, and domestic larger van cooler manufacturing enterprise all adopts this technology at present, and the van cooler heat-proof quality utilizing this technology to produce is higher.2, the injection foaming type that burst is assembled.3, overall skeleton injects foaming type.4, vacuum adsorption type is pasted.Wherein, totally-enclosed polyurethane plate adhesive glass steel structure all has use in the second generation and third generation van cooler manufacturing enterprise.This product weight is light, thermal leakage ratio (coefficient of thermal conductivity) is low, high insulating effect, and use unsaturated polyester resin to make adhesive agent, another cushioned layer, warm material then uses hard polyurethane foams, and the coefficient of thermal conductivity of envelope is low, intensity is high, plate bonding high strength, high leakproofness adhesive, form an entirety.But after polyurethane cutting, loss ratio is comparatively large, and therefore material cost is higher.Especially, when current chemical raw material appreciates serious, the productive costs in compartment is more and more higher.And existingly reclaim difficulty using glass-felt plastic, color steel, stainless steel faceplate as the compartment of panel after scrapping, do not have an environment friendly, and be not easy after surface fracture to repair, affect the later stage use of van cooler.Its heavier-weight of the van cooler assembled in this form, and packaging technology is complicated, connecting between sheet material will by the form of rivet, and leak tightness is not desirable especially, finally cause van cooler packaging technology complicated, and the shortcoming that the input cost of the working expenses of later stage use is higher.
Summary of the invention
In order to solve above-mentioned technical matters, an object of the present invention is to provide a kind of refrigeration car carriage sheet material, light-weight environment-friendly, not yielding, mechanical property is high, connecting method is easy, excellent thermal insulation performance, cost are low, can meet current body plate of refrigerator van material demand.
Two of object of the present invention is to provide above-mentioned refrigeration car carriage preparation of plates method.
To achieve the above object, present invention employs following technical scheme:
A kind of refrigeration car carriage sheet material, be made up of polypropylene foam sheet material upper and lower surface composite glass fiber RPP panel, wherein, described polypropylene foam sheet material is foamed by the raw MAT'L of following mass ratio and is formed: modified polypropene 100 parts, modified poly ethylene 5 ~ 10 parts, nucleating agent 0.2 ~ 1.5 part, foaming agent 5 ~ 10 parts, foam stabilizer 0.2 ~ 1.5 part.
Described modified polypropene refers to that fusion index is the high fondant-strength PP particle of 2.5-3.5g/10min, and Rupture Stress is 1.53-4.30N.Described modified poly ethylene is high pressure polyethylene, and its fusion index is 2-10 g/10min.Described nucleating agent is one or more compounds of calcium carbonate, french talc, silicon dioxide, zinc oxide, carbon black, plays the effect improving cell density.Described foaming agent is one or several compounds of carbon dioxide, Celogen Az, 4,4-disulfonyl hydrazide diphenyl ethers, plays the effect improving cell density and improve abscess-size size.Described foam stabilizer is one or more compounds in fatty acid glyceride class foaming stabilizer, methyl glycol fatty acid ester class foaming stabilizer and isooctyl alcohol fatty ester class foaming stabilizer, be mainly used in the intensity improving cell wall, prevent breaking of cell wall, play the effect of stable bubble hole.
As preferably, described fiber glass reinforced polypropylene panel is formed by the blended woven fabric hot pressing of glass and polyacrylic fibres, and wherein, polypropylene content is 40%, and glass fiber content is 60%.
As preferably, described fiber glass reinforced polypropylene plate thickness is 1.5 ~ 2.5mm, and the thickness of polypropylene foam sheet material is 50 ~ 70mm.
A kind of refrigeration car carriage preparation of plates method, comprises the steps:
1) raw MAT'L premix: raw MAT'L is added in mixing and blending machine and stir 30 ~ 40min, then carry out plasticating 5 ~ 6min;
2) foam shaping by extrusion: the raw MAT'L through step 1) premix is delivered to double screw extrusion machine and extrudes, then sizing obtains polypropylene foam sheet material in a mold, and mold temperature is 60 ~ 75 DEG C;
3) composite glass fiber RPP panel: glass and polypropylene blended cloth are first passed through a warm-up mill preheating, then with step 2) send into the cold and hot pressing plate sizing compound of hot press together with the polypropylene foam sheet material that obtains, finally draw to cutter and carry out cutting, obtain described refrigeration car carriage sheet material, wherein, the temperature of described warm-up mill is 150 ~ 170 DEG C, in described cold and hot pressing plate: hot plate length is 1 ~ 1.5m, and temperature is 180 ~ 190 DEG C; Cold drawing length is 4 ~ 4.5m, and temperature is 60 ~ 70 DEG C.
The present invention is owing to have employed above technical scheme, on polypropylene foam sheet material after composite glass fiber RPP panel, the bending strength of whole product, strength under shock, bending modulus all increase, and have sound-deadening and noise-reducing, easy to assembly, odorlessness, easily recovery, degradable, the advantage such as environmentally friendly.The present invention refrigerates mechanical property and the excellent thermal insulation performance of car carriage sheet material, can meet the demand of current refrigerator carriage body technique development.The production process that the present invention refrigerates car carriage sheet material continuously and stable, the safe non-environmental-pollution of production process, is applicable to industrial-scale production.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention refrigerates car carriage sheet material.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
One refrigeration car carriage sheet material as shown in Figure 1, be made up of polypropylene foam sheet material 1 upper and lower surface composite glass fiber RPP panel 2, wherein, described polypropylene foam sheet material is foamed by the raw MAT'L of following mass ratio and is formed: modified polypropene 100 parts, modified poly ethylene 5 ~ 10 parts, nucleating agent 0.2 ~ 1.5 part, foaming agent 5 ~ 10 parts, foam stabilizer 0.2 ~ 1.5 part.
Described fiber glass reinforced polypropylene panel is formed by the blended woven fabric hot pressing of glass and polyacrylic fibres, and wherein, polypropylene content is 40%, and glass fiber content is 60%.Described fiber glass reinforced polypropylene plate thickness is 1.5 ~ 2.5mm, and the thickness of polypropylene foam sheet material is 50 ~ 70mm.
Above-mentioned refrigeration car carriage preparation of plates method, comprises the steps:
1) raw MAT'L premix: raw MAT'L is added in mixing and blending machine and stir 30 ~ 40min, then carry out plasticating 5 ~ 6min;
2) foam shaping by extrusion: the raw MAT'L through step 1) premix is delivered to double screw extrusion machine and extrudes, then sizing obtains polypropylene foam sheet material in a mold, and mold temperature is 60 ~ 75 DEG C;
3) composite glass fiber RPP panel: glass and polypropylene blended cloth are first passed through a warm-up mill preheating, then with step 2) send into the cold and hot pressing plate sizing compound of hot press together with the polypropylene foam sheet material that obtains, finally draw to cutter and carry out cutting, obtain described refrigeration car carriage sheet material, wherein, the temperature of described warm-up mill is 150 ~ 170 DEG C, in described cold and hot pressing plate: hot plate length is 1 ~ 1.5m, and temperature is 180 ~ 190 DEG C; Cold drawing length is 4 ~ 4.5m, and temperature is 60 ~ 70 DEG C.
Following embodiment product adopts said method manufacture, products obtained therefrom thickness be 60mm(wherein fiberglass reinforced PP plate thickness be 2.5mm), following comparative example product is commercial same thickness sheet material:
Embodiment 1:
By modified polypropene 100 parts, modified poly ethylene 10 parts, 0.2 part, calcium carbonate, carbon dioxide 10 parts, 0.2 part, mineral oil, plasticate 6min at 170 DEG C, then drop in extruder, foaming and setting in hot-die molding machine, blowing temperature is 170 DEG C, time of heat is 15min, obtain foamed plastic sheet material, then enter double-steel belt pressing machine composite glass fiber and strengthen PP panel, obtain polypropylene foam Composite board products 1, compression strength is 1.95MPa, superficial hardness 75HD, panel peel strength 201.6 [(Nmm)/mm], bending strength 10MPa.Coefficient of thermal conductivity is 0.035 W/(mk)
-1.
Embodiment 2:
By modified polypropene 100 parts, modified poly ethylene 5 parts, 0.2 part, calcium carbonate, carbon dioxide 10 parts, 0.2 part, mineral oil, plasticate 6min at 170 DEG C, then drop in extruder, foaming and setting in hot-die molding machine, blowing temperature is 170 DEG C, time of heat is 15min, obtain foamed plastic sheet material, then enter double-steel belt pressing machine composite glass fiber and strengthen PP panel, obtain polypropylene foam Composite board products 2, compression strength is 1.75MPa, superficial hardness 73HD, panel peel strength 203.4 [(Nmm)/mm], bending strength 9.3MPa.Coefficient of thermal conductivity is 0.036 W/(mk)
-1.
Embodiment 3:
By modified polypropene 100 parts, modified poly ethylene 10 parts, 0.2 part, calcium carbonate, carbon dioxide 5 parts, 0.2 part, mineral oil, plasticate 6min at 170 DEG C, then drop in extruder, foaming and setting in hot-die molding machine, blowing temperature is 170 DEG C, time of heat is 15min, obtain foamed plastic sheet material, then enter double-steel belt pressing machine composite glass fiber and strengthen PP panel, obtain polypropylene foam Composite board products 3, compression strength is 1.86MPa, superficial hardness 77HD, panel peel strength 202.6 [(Nmm)/mm], bending strength 9.6MPa.Coefficient of thermal conductivity is 0.033 W/(mk)
-1.
Comparative example 1:
The polyurethane heat-insulation core manufactured by pouring-in foaming method is sandwich of layers, glass-felt plastic is the composite board of panel, its compression strength is compression strength is 1.16MPa, superficial hardness 72HD, panel peel strength 130.6 [(Nmm)/mm], bending strength 7.6MPa, coefficient of thermal conductivity is 0.042 W/(mk)
-1.
comparative example 2
The polyurethane heat-insulation core manufactured by pouring-in foaming method is sandwich of layers, color steel is the composite board of panel, its compression strength is compression strength is 1.06MPa, superficial hardness 71HD, panel peel strength 110.6 [(Nmm)/mm], bending strength 6.1MPa, coefficient of thermal conductivity is 0.045 W/(mk)
-1.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (2)
1. a refrigeration car carriage sheet material, it is characterized in that, be made up of polypropylene foam sheet material (1) upper and lower surface composite glass fiber RPP panel (2), wherein, described polypropylene foam sheet material is foamed by the raw MAT'L of following mass ratio and is formed: modified polypropene 100 parts, modified poly ethylene 5 ~ 10 parts, nucleating agent 0.2 ~ 1.5 part, foaming agent 5 ~ 10 parts, foam stabilizer 0.2 ~ 1.5 part; Described modified polypropene refers to that fusion index is the high fondant-strength PP particle of 2.5-3.5g/10min, and Rupture Stress is 1.53-4.30N; Described modified poly ethylene is high pressure polyethylene, and its fusion index is 2-10 g/10min; Described nucleating agent is one or more compounds of calcium carbonate, french talc, silicon dioxide, zinc oxide, carbon black; Described foaming agent is one or several compounds of carbon dioxide, Celogen Az, 4,4-disulfonyl hydrazide diphenyl ethers; Described foam stabilizer is one or more compounds in fatty acid glyceride class foaming stabilizer, methyl glycol fatty acid ester class foaming stabilizer and isooctyl alcohol fatty ester class foaming stabilizer; Described fiber glass reinforced polypropylene panel is formed by the blended woven fabric hot pressing of glass and polyacrylic fibres, and wherein, polypropylene content is 40%, and glass fiber content is 60%; Described fiber glass reinforced polypropylene plate thickness is 1.5 ~ 2.5mm, and the thickness of polypropylene foam sheet material is 50 ~ 70mm.
2. one refrigeration car carriage preparation of plates method according to claim 1, is characterized in that, comprise the steps:
1) raw MAT'L premix: raw MAT'L is added in mixing and blending machine and stir 30 ~ 40min, then carry out plasticating 5 ~ 6min;
2) foam shaping by extrusion: by through step 1) raw MAT'L of premix delivers to double screw extrusion machine and extrudes, and then sizing obtains polypropylene foam sheet material in a mold, and mold temperature is 60 ~ 75 DEG C;
3) composite glass fiber RPP panel: glass and polypropylene blended cloth are first passed through a warm-up mill preheating, then with step 2) send into the cold and hot pressing plate sizing compound of hot press together with the polypropylene foam sheet material that obtains, finally draw to cutter and carry out cutting, obtain described refrigeration car carriage sheet material, wherein, the temperature of described warm-up mill is 150 ~ 170 DEG C, in described cold and hot pressing plate: hot plate length is 1 ~ 1.5m, and temperature is 180 ~ 190 DEG C; Cold drawing length is 4 ~ 4.5m, and temperature is 60 ~ 70 DEG C.
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| CN201210556226.0A CN102991403B (en) | 2012-12-19 | 2012-12-19 | Compartment body plate for refrigerated truck and preparation method of compartment body plate |
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| CN201210556226.0A CN102991403B (en) | 2012-12-19 | 2012-12-19 | Compartment body plate for refrigerated truck and preparation method of compartment body plate |
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| CN102991403B true CN102991403B (en) | 2015-07-08 |
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| CN107722417B (en) * | 2017-09-20 | 2020-12-25 | 广德祥源新材科技有限公司 | Composite high-thermal-conductivity buffer irradiation crosslinked polyethylene foam and preparation method thereof |
| CN115107301A (en) * | 2022-06-15 | 2022-09-27 | 江苏莘翔机电股份有限公司 | Production process of low-cost glass-carbon mixed heavy truck sleeper |
| GB202215919D0 (en) * | 2022-10-27 | 2022-12-14 | Warburton Christopher John | Improvements to apparatus for maintaining a cooled environment in a vehicle and a vehicle including said cooled environment |
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| US7411024B2 (en) * | 2003-12-22 | 2008-08-12 | Nova Chemicals Inc. | Interpolymer resin particles |
| CN101353460B (en) * | 2008-09-11 | 2011-11-16 | 丹阳市华东工程塑料有限公司 | Environment-friendly type micro-foaming polypropylene sheet and preparation thereof |
| CN102115561B (en) * | 2009-12-30 | 2013-02-20 | 李晓丽 | Physical foaming polypropylene sheet material |
| CN102218828A (en) * | 2011-05-27 | 2011-10-19 | 常州市宏发纵横新材料科技股份有限公司 | Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material |
| CN202115020U (en) * | 2011-06-03 | 2012-01-18 | 常州市宏发纵横新材料科技股份有限公司 | Multi-axial reinforced thermoplastic composite plate with continuous fibers |
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Effective date of registration: 20190419 Address after: 225008 No. 7 Xinyi Road, Yangzhou City, Jiangsu Province Patentee after: Maisitong Composite Materials Co., Ltd., Yangzhou City Address before: 311121 Building No. 2, Huayi Road, Yuhang Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Holycore Composite Material Co., Ltd. |