CN104672722A - High-strength PVC profile for pallet beams and treatment process thereof - Google Patents
High-strength PVC profile for pallet beams and treatment process thereof Download PDFInfo
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Abstract
The invention discloses a high-strength PVC profile for pallet beams and a treatment process thereof. The high-strength PVC profile comprises a PVC base material, an enhancer and a heat resistant modifier, wherein the content of the PVC base material is 86.5-89.1%, the content of the enhancer is 7.5-8.4%, and the content of the heat resistant modifier is 4.2-5.5%. The high-strength PVC profile for the pallet beams and the treatment process thereof disclosed by the invention can greatly improve the adhesion of heat insulating materials of bedplates, and effectively reduce the problem of cracking of the bedplates caused by long term use, have high resistance heat insulation property and can improve the corrosion resistance during use.
Description
Technical field
The invention belongs to the manufacture field of PVC profile, particularly a kind of pallet crossbeam high-strength PVC section bar and treatment process thereof.
Background technology
PVC plastic profiled material is developed so far, and has been a very ripe product, and product category comprises the outdoor goods such as PVC plastic door and window profile material, PVC exterior wall cladding, PVC synthetic resins watt and PVC guardrail.PVC plastic has the advantages such as good rigidly, intensity is high, fire-retardant, electrical insulating property is good, but, because the thermotolerance poor corrosion resistance of PVC, cannot use at relatively high temperatures, have impact on the application of PVC profile to a great extent.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, a kind of pallet crossbeam high-strength PVC section bar and treatment process thereof are provided, compared with prior art, substantially increase the sticking power of the lagging material of tray substrate, effectively reduce the problem of Cracking that tray substrate life-time service causes, also there is the characteristic of high-intensity high-tenacity simultaneously.
In order to solve above technical problem, the invention provides a kind of pallet crossbeam high-strength PVC section bar, comprise PVC base, stiffeners and heat-proof modifier, the content of described PVC base is 86.5-89.1%, the content of described stiffeners is 7.5-8.4%, the content of described heat-proof modifier is 4.2-5.5%, wherein:
The each components in mass portion number of described PVC base is counted: polyvinyl chloride (PVC) RESINS 55-72 part, oxidation inhibitor 3-5 part, fire retardant 8-12 part, thermo-stabilizer 4-8 part, epoxy soybean oil 7-9 part, stearic acid 1-4 part;
The each component of described stiffeners is counted by weight: impact modifier: 7-12 part, organotin stabilizer: 0.5-1 part, light calcium carbonate: 1-1.5 part, toughner: 0.05-0.1 part, chlorinatedpolyethylene: 1-3 part, oxidized petroleum waves: 0.1-0.6 part, polyethylene wax: 0.3-0.6 part, organic wax: 0.1-0.5 part;
The each components in mass portion number of described heat-proof modifier is counted: tetraethoxysilance 18-23 part; Heat-resisting color stuffing 45-55 part; Auxiliary agent 2-4 part; Dimethyl formamide 13-18 part; Heat-reactive phenolic resin 35-40 part; Vinylbenzene 17-25 part; Methyl methacrylate 6-7 part; N-phenyl maleimide 2-5 part; Initiator 1-2 part;
Described heat-resisting color stuffing comprises nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 3:4; Described isolation-type functional stuffing comprises following component according to the mass fraction: hollow glass micropearl: 2-6 part, graphite: 10-15 part, black silicon carbide: 20-35 part, fine-grained alumina: 25-30 part, talcum powder: 3-6 part; Described auxiliary agent is for comprise following component according to the mass fraction: dispersion agent: 10-15 part, wetting agent: 2-6 part, solidifying agent 20-50 part, matting agent: 2-6 part, film coalescence aid: 5-10 part, thickening material: 5-10 part, Natvosol: 5-10 part, pH adjusting agent: 1-5 part, auxiliary material: 1-3 part; Defoamer: 2-4 part; Also comprise silane coupling agent in auxiliary agent, the mass ratio of its quality and tetraethoxysilance is 1:15; Described auxiliary material is compound rare-earth, and described compound rare-earth comprises following composition by weight percentage: Sc:16-18%, Gd:10-11%, Sm:18-20%, Pr:9-11%, and surplus is La, and above each component sum is 100%;
Wherein, described dispersion agent is the one in tripoly phosphate sodium STPP, sodium tetrapolyphosphate or Sodium hexametaphosphate 99; Described film coalescence aid is the one in ethylene glycol ethyl ether, butyl glycol ether, ethylene glycol or propylene glycol; Described defoamer is one or more in organosilicon, polyethers, organo-siloxane or acid amides; Described fire retardant is antimonous oxide or phosphotriester; Described organotin stabilizer is octyl mercaptan tin or Methyl stannum mercaptide.
The technical scheme that the present invention limits further is: aforesaid pallet crossbeam high-strength PVC section bar, the each components in mass portion number of described impact modifier is counted: MBS resin 8-12 part, chlorinatedpolyethylene 70-78 part, ACR401 processing aids acrylic resin 3-5 part, KH550 silane coupling agent 1-5 part.
Aforesaid pallet crossbeam high-strength PVC section bar, described polyvinyl chloride (PVC) RESINS is SG-5 type resin, and toughner is styrene butadiene thermoplasticelastomer or ethylene-vinyl acetate copolymer.
Aforesaid pallet crossbeam high-strength PVC section bar, the chlorinity of described chlorinated polyvinyl chloride resin is 60%.
A treatment process for pallet crossbeam high-strength PVC section bar, comprises following concrete steps:
A: heat-proof modifier and water are allocated according to mass ratio 1:2.5, stir 15-35min, stirring velocity is 150-180 r/min;
B: add stiffeners in above-mentioned mixed solution, the mass ratio that mixed solution and PVC change a social system agent is 2.5:1, and stir 15-20min, stirring velocity is 90-100 r/min;
C: with behind sand paper trickle polishing PVC base surface, utilizes the mixture in step B to carry out first time coating to it, when its substrate surface water ratio is less than or equal to 8%, carries out second time coating, namely completes the process of heat insulation corrosion resistant type rack baffle PVC profile.
The treatment process of aforesaid pallet crossbeam high-strength PVC section bar, during coating, coated tool and PVC base keep 25-30 degree obliquity, firmly evenly.
Further, the treatment process of aforesaid pallet crossbeam high-strength PVC section bar, the coating thickness in twice coating processes is 0.4-0.6mm.
The invention has the beneficial effects as follows: in base material of the present invention, use chlorinated vinyl chloride, and the heat-proof modifier adopting heat-reactive phenolic resin to synthesize, processability is good, and void content is low, and good heat resistance, acid resistance is strong; The performance of heat-proof modifier is good, and consumption is few, and meanwhile, synthetic materials is all conventional material, easily obtains, and cost is low;
In technique scheme, high-temperature resistant coating is prepared owing to utilizing tetraethoxy, this coating is mineral membrane after thermofixation, along with the rising of temperature, sticking power and the hardness of cured film significantly improve, and sticking power reaches 1 grade, pencil hardness is greater than 6H, make the temperature that coating ability is higher, meanwhile, the use of dimethyl formamide and coupling agent all can reduce film cracking and be inclined to;
Tetraethoxy can reduce coating cracking tendency greatly, add dimethyl formamide in tetraethoxy after, on the one hand, colloidal sol is in gel conversion process, dimethyl formamide is combined with hydrolyzing intermediate by hydrogen bond, inhibit the chemically reactive of hydrolyzing intermediate Si (OC2H5) 4-x (OH) x and product S ixOy (OH) z, reduce sol-hydrolysis, the speed of reaction of polycondensation, to facilitate between particle this is cross-linked with each other, form orderly network structure, improve gel structure, make again gel particle increase simultaneously, mesoporous pore size and pore volume increase, dry rear gel shrinks amount is caused to diminish, obtain the uniform gel of size distribution, thus during solvent evaporation, gel uniform internal stress,
Molybdenumdisulphide, graphite, talcum powder is adopted in isolation-type functional stuffing, graphite material makes it easily produce slippage due to distinctive crystalline structure, graphite metal to-metal contact lubricant has adsorptivity simultaneously, one deck lubricant film (graphite crystal film) can be formed, play the effect reducing frictional wear, there is good thermal diffusivity and thermal conductivity, because the fusing point of carbon is very high, therefore can not produce carbon and metallic substance sting weldering phenomenon; Talcum powder, as filler, can play skeleton function, reduces the hardness of paint film that manufacturing cost improves coating simultaneously, increase the stable of shape of product, increase tensile strength, shearing resistance, flexing intensity, pressure intensity, reduce distortion, extension rate, thermal expansivity, whiteness is high, the dispersed feature such as by force of epigranular, makes that the ductility of coating and workability etc. are excellent to be optimized;
Graphite and molybdenumdisulphide are mixed use, graphite and molybdenumdisulphide have good synergistic effect, both are the wear resisting property that effectively can improve coating used in combination in certain proportion, reduce wear weight loss and frictional coefficient, in coating, add a certain amount of antimonous oxide simultaneously, effectively can strengthen the hardness of paint coatings, and improve the wear resistance of coating;
Hollow glass micropearl is the inorganic materials of a kind of excellent chemical proof and resistance to deterioration, thickness is generally 2-5 μm, and platelet length is 100-300 μm; Hollow glass micropearl can be divided into many little spaces coating, make the tiny crack in coating, microbubble splits mutually, inhibit capillary infiltration, this greatly increases sticking power and the shock resistance of coating simultaneously, the defect such as inhibit coating to chap, to peel off.
Embodiment
embodiment 1
A kind of pallet crossbeam high-strength PVC section bar that the present embodiment provides, comprise PVC base, stiffeners and heat-proof modifier, the content of described PVC base is 88.1%, and the content of described stiffeners is 7.6%, and the content of described heat-proof modifier is 4.3%, wherein:
The each components in mass portion number of PVC base is counted: SG-5 type polyvinyl chloride (PVC) RESINS 57 parts, 3 parts, oxidation inhibitor, antimonous oxide 8 parts, thermo-stabilizer 4 parts, epoxy soybean oil 7 parts, stearic acid 1 part; The each component of stiffeners is counted by weight: impact modifier: 7 parts, octyl mercaptan tin: 0.5 part, light calcium carbonate: 1 part, styrene butadiene thermoplasticelastomer: 0.05 part, chlorinatedpolyethylene: 1 part, oxidized petroleum waves: 0.3 part, polyethylene wax: 0.4 part, organic wax: 0.2 part.
The each components in mass portion number of heat-proof modifier is counted: tetraethoxysilance 18 parts; Heat-resisting color stuffing 45 parts; Auxiliary agent 2 parts; Dimethyl formamide 13 parts; Heat-reactive phenolic resin 35 parts; Vinylbenzene 17 parts; Methyl methacrylate 6 parts; N-phenyl maleimide 2 parts; Initiator 1 part; Heat-resisting color stuffing comprises nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 3:4; Isolation-type functional stuffing comprises following component according to the mass fraction: hollow glass micropearl: 2 parts, graphite: 10 parts, black silicon carbide: 20 parts, fine-grained alumina: 25 parts, talcum powder: 3 parts; Auxiliary agent is for comprise following component according to the mass fraction: tripoly phosphate sodium STPP: 10 parts, wetting agent: 2 parts, 20 parts, solidifying agent, matting agent: 2 parts, ethylene glycol ethyl ether: 5 parts, thickening material: 5 parts, Natvosol: 6 parts, pH adjusting agent: 1 part, auxiliary material: 2 parts; Organo-siloxane: 3 parts; Also comprise silane coupling agent in auxiliary agent, the mass ratio of its quality and tetraethoxysilance is 1:15; Auxiliary material is compound rare-earth, and compound rare-earth comprises following composition by weight percentage: Sc:16%, Gd:10%, Sm:18%, Pr:9%, and surplus is La, and above each component sum is 100%; The each components in mass portion number of impact modifier is counted: MBS resin 8 parts, chlorinatedpolyethylene 70 parts, ACR401 processing aids acrylic resin 3 parts, KH550 silane coupling agent 1 part.
The present invention have also been devised a kind for the treatment of process of pallet crossbeam high-strength PVC section bar, comprises following concrete steps:
A: heat-proof modifier and water are allocated according to mass ratio 1:2.5, stir 15min, stirring velocity is 180 r/min;
B: add stiffeners in above-mentioned mixed solution, the mass ratio that mixed solution and PVC change a social system agent is 2.5:1, and stir 15min, stirring velocity is 100 r/min;
C: with behind sand paper trickle polishing PVC base surface, utilizes the mixture in step B to carry out first time coating to it, when its substrate surface water ratio is less than or equal to 8%, carries out second time coating, namely completes the process of heat insulation corrosion resistant type rack baffle PVC profile;
During coating, coated tool and PVC base keep 25 degree of obliquitys, and firmly evenly, the coating thickness in twice coating processes is 0.6mm.
embodiment 2
A kind of pallet crossbeam high-strength PVC section bar that the present embodiment provides, comprise PVC base, stiffeners and heat-proof modifier, the content of PVC base is 87.1%, and the content of stiffeners is 7.4%, and the content of heat-proof modifier is 5.5%, wherein:
The each components in mass portion number of PVC base is counted: SG-5 type polyvinyl chloride (PVC) RESINS 72 parts, 5 parts, oxidation inhibitor, antimonous oxide 11 parts, thermo-stabilizer 7 parts, epoxy soybean oil 9 parts, stearic acid 4 parts; The each component of stiffeners is counted by weight: impact modifier: 12 parts, octyl mercaptan tin: 1 part, light calcium carbonate: 1.5 parts, styrene butadiene thermoplasticelastomer: 0.1 part, chlorinatedpolyethylene: 3 parts, oxidized petroleum waves: 0.6 part, polyethylene wax: 0.3 part, organic wax: 0.5 part.
The each components in mass portion number of heat-proof modifier is counted: tetraethoxysilance 23 parts; Heat-resisting color stuffing 45 parts; Auxiliary agent 4 parts; Dimethyl formamide 18 parts; Heat-reactive phenolic resin 40 parts; Vinylbenzene 25 parts; Methyl methacrylate 7 parts; N-phenyl maleimide 5 parts; Initiator 2 parts; Heat-resisting color stuffing comprises nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 3; Isolation-type functional stuffing comprises following component according to the mass fraction: hollow glass micropearl: 6 parts, graphite: 15 parts, black silicon carbide: 25 parts, fine-grained alumina: 30 parts, talcum powder: 6 parts; Auxiliary agent is for comprise following component according to the mass fraction: tripoly phosphate sodium STPP: 10 parts, wetting agent: 6 parts, 20 parts, solidifying agent, matting agent: 6 parts, ethylene glycol ethyl ether: 10 parts, thickening material: 10 parts, Natvosol: 10 parts, pH adjusting agent: 5 parts, auxiliary material: 3 parts; Organo-siloxane: 4 parts; Also comprise silane coupling agent in auxiliary agent, the mass ratio of its quality and tetraethoxysilance is 1:15; Auxiliary material is compound rare-earth, and compound rare-earth comprises following composition by weight percentage: Sc:18%, Gd:11%, Sm:20%, Pr:11%, and surplus is La, and above each component sum is 100%; The each components in mass portion number of impact modifier is counted: MBS resin 12 parts, chlorinatedpolyethylene 78 parts, ACR401 processing aids acrylic resin 3 parts, KH550 silane coupling agent 5 parts.
The present invention have also been devised a kind for the treatment of process of pallet crossbeam high-strength PVC section bar, comprises following concrete steps:
A: heat-proof modifier and water are allocated according to mass ratio 1:2.5, stir 15min, stirring velocity is 180 r/min;
B: add stiffeners in above-mentioned mixed solution, the mass ratio that mixed solution and PVC change a social system agent is 2.5:1, and stir 20min, stirring velocity is 90r/min;
C: with behind sand paper trickle polishing PVC base surface, utilizes the mixture in step B to carry out first time coating to it, when its substrate surface water ratio is less than or equal to 8%, carries out second time coating, namely completes the process of heat insulation corrosion resistant type rack baffle PVC profile;
During coating, coated tool and PVC base keep 30 degree of obliquitys, and firmly evenly, the coating thickness in twice coating processes is 0.4mm.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (7)
1. pallet crossbeam high-strength PVC section bar, comprises PVC base, stiffeners and heat-proof modifier, it is characterized in that, the content of described PVC base is 86.5-89.1%, the content of described stiffeners is 7.5-8.4%, and the content of described heat-proof modifier is 4.2-5.5%, wherein:
The each components in mass portion number of described PVC base is counted: polyvinyl chloride (PVC) RESINS 55-72 part, oxidation inhibitor 3-5 part, fire retardant 8-12 part, thermo-stabilizer 4-8 part, epoxy soybean oil 7-9 part, stearic acid 1-4 part;
The each component of described stiffeners is counted by weight: impact modifier: 7-12 part, organotin stabilizer: 0.5-1 part, light calcium carbonate: 1-1.5 part, toughner: 0.05-0.1 part, chlorinatedpolyethylene: 1-3 part, oxidized petroleum waves: 0.1-0.6 part, polyethylene wax: 0.3-0.6 part, organic wax: 0.1-0.5 part;
The each components in mass portion number of described heat-proof modifier is counted: tetraethoxysilance 18-23 part; Heat-resisting color stuffing 45-55 part; Auxiliary agent 2-4 part; Dimethyl formamide 13-18 part; Heat-reactive phenolic resin 35-40 part; Vinylbenzene 17-25 part; Methyl methacrylate 6-7 part; N-phenyl maleimide 2-5 part; Initiator 1-2 part;
Described heat-resisting color stuffing comprises nano montmorillonite class silicate and isolation-type functional stuffing, and both mass ratioes are 3:4; Described isolation-type functional stuffing comprises following component according to the mass fraction: hollow glass micropearl: 2-6 part, graphite: 10-15 part, black silicon carbide: 20-35 part, fine-grained alumina: 25-30 part, talcum powder: 3-6 part; Described auxiliary agent is for comprise following component according to the mass fraction: dispersion agent: 10-15 part, wetting agent: 2-6 part, solidifying agent 20-50 part, matting agent: 2-6 part, film coalescence aid: 5-10 part, thickening material: 5-10 part, Natvosol: 5-10 part, pH adjusting agent: 1-5 part, auxiliary material: 1-3 part; Defoamer: 2-4 part; Also comprise silane coupling agent in auxiliary agent, the mass ratio of its quality and tetraethoxysilance is 1:15; Described auxiliary material is compound rare-earth, and described compound rare-earth comprises following composition by weight percentage: Sc:16-18%, Gd:10-11%, Sm:18-20%, Pr:9-11%, and surplus is La, and above each component sum is 100%;
Wherein, described dispersion agent is the one in tripoly phosphate sodium STPP, sodium tetrapolyphosphate or Sodium hexametaphosphate 99; Described film coalescence aid is the one in ethylene glycol ethyl ether, butyl glycol ether, ethylene glycol or propylene glycol; Described defoamer is one or more in organosilicon, polyethers, organo-siloxane or acid amides; Described fire retardant is antimonous oxide or phosphotriester; Described organotin stabilizer is octyl mercaptan tin or Methyl stannum mercaptide.
2. pallet crossbeam high-strength PVC section bar according to claim 1, it is characterized in that, each components in mass portion number of described impact modifier is counted: MBS resin 8-12 part, chlorinatedpolyethylene 70-78 part, ACR401 processing aids acrylic resin 3-5 part, KH550 silane coupling agent 1-5 part.
3. pallet crossbeam high-strength PVC section bar according to claim 1, is characterized in that, described polyvinyl chloride (PVC) RESINS is SG-5 type resin, and toughner is styrene butadiene thermoplasticelastomer or ethylene-vinyl acetate copolymer.
4. pallet crossbeam high-strength PVC section bar according to claim 1, is characterized in that, the chlorinity of described chlorinated polyvinyl chloride resin is 60%.
5., according to the pallet crossbeam treatment process of high-strength PVC section bar in Claims 1-4 described in any one claim, it is characterized in that, comprise following concrete steps:
A: heat-proof modifier and water are allocated according to mass ratio 1:2.5, stir 15-35min, stirring velocity is 150-180 r/min;
B: add stiffeners in above-mentioned mixed solution, the mass ratio that mixed solution and PVC change a social system agent is 2.5:1, and stir 15-20min, stirring velocity is 90-100 r/min;
C: with behind sand paper trickle polishing PVC base surface, utilizes the mixture in step B to carry out first time coating to it, when its substrate surface water ratio is less than or equal to 8%, carries out second time coating, namely completes the process of heat insulation corrosion resistant type rack baffle PVC profile.
6. the treatment process of pallet crossbeam high-strength PVC section bar according to claim 5, is characterized in that, during coating, coated tool and PVC base keep 25-30 degree obliquity, firmly evenly.
7. the treatment process of pallet crossbeam high-strength PVC section bar according to claim 5, it is characterized in that, the coating thickness in twice coating processes is 0.4-0.6mm.
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| CN201510123335.7A CN104672722A (en) | 2015-03-20 | 2015-03-20 | High-strength PVC profile for pallet beams and treatment process thereof |
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| CN107641266A (en) * | 2017-09-30 | 2018-01-30 | 镇江市星耀智能装备有限公司 | A kind of PVC composite wood-plastics sheet material |
| CN111070606A (en) * | 2019-12-27 | 2020-04-28 | 苏州耐思特塑胶有限公司 | Processing technology of electronic instrument plastic cover plate |
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