CN105218939A - A kind of foamable 3D printed material and preparation method thereof - Google Patents

Abstract

The present invention relates to a kind of foamable 3D printed material and preparation method thereof.This printed material mainly comprises: toughner, wax, tackifying resin, stearic acid, oxidation inhibitor, pigment and whipping agent.This material has flexible characteristic, 3D printing can be carried out on garment material, the stereoscopic sensation of pattern can be strengthened after foaming, and blowing temperature can be adjusted and foamed time reaches the foaming effect wanted, and there is not the problem that shrinking percentage affects greatly end article performance, print procedure and foaming process environment-protecting asepsis evil, odorlessness simultaneously.

Description

A kind of foamable 3D printed material and preparation method thereof

Technical field

The present invention relates to a kind of foamable 3D printed material and preparation method thereof, belong to the Material Field of rapid shaping.

Background technology

3D prints, i.e. rapid shaping (RapidPrototype, RP) technology is a kind of advanced manufacturing technology developed rapidly the nineties in 20th century, is a kind of gordian technique of serving production new product development.It plays positive pushing effect to the products innovation, shortening new-product development cycle, raising product competitiveness etc. of promoting enterprise.This technology, since appearance, has been widely used gradually in the production of countries in the world, and expedites the emergence of out an emerging technical field thus.Current rapid shaping technique mainly comprises fused glass pellet (FusedDepositionModeling, FDM), selective laser sintering and moulding (SelectiveLaserSintering, SLS), Stereolithography (stereolithographyapparatus, SLA), the shaping (LaminatedObjectManufacturing of laminated solid body, the technology such as LOM), wherein FDM is with fastest developing speed, and application at most.

FDM refers to that thread thermoplastic material sends shower nozzle to by wire drive feeder, is heated to molten state in the showerhead, extrudes through nozzle.The filamentary material of molten state is extruded out, and the path controlled according to the individual-layer data of three-dimensional software extrudes and the position coagulation forming of specifying, and layer by layer deposition solidifies, and finally forms whole three-dimensional objects.The operating environment of FDM is clean, safety, and technique is simple, easy handling, and does not produce rubbish, has therefore greatly widened operation occasion.Its raw materials provides with the form of spool silk, is easy to carrying and quick-replaceable.

Foam material refers to that whipping agent gasifies at material internal or expands thus the material of generation vesicular structure, can reduce density of material and consumption, meet light-high-strength and the Functional Requirement of material simultaneously under the prerequisite of less loss material mechanical property.Foam material is long for fatigue lifetime, has good toughness, thermostability, energy absorption and insulating property, has broad application prospects in automobile, household electrical appliances, electronics, building, consumer goods industries and military field.

Such as, but the preparation method of foam material concentrates on traditional manufacture field substantially at present, and supercutical fluid prepares polymer foaming technology, two times opening mold, and costly, the construction cycle is long in required die sinking.This just impels us to develop a kind of foamable 3D printed material, is combined by its preparation method with rapid shaping technique, thus the tempo of development of significantly improving product, greatly increase the supporting dynamics to individuation product.In addition, this 3D printed material is flexible materials, can carry out 3D printing, can strengthen the stereoscopic sensation of pattern after foaming on garment material, and can adjust blowing temperature and foamed time reaches the foaming effect wanted.

Summary of the invention

For the market vacancy in current 3D printing consumables field, the object of this invention is to provide a kind of foamable 3D printed material and preparation method thereof, this material has flexible characteristic, and there is not the problem that shrinking percentage affects greatly end article performance, print procedure and foaming process environment-protecting asepsis evil, odorlessness simultaneously.

In the present invention, material prescription adopts toughner 5%-80%, wax 5%-90%, tackifying resin 1%-60%, stearic acid 0%-20%, oxidation inhibitor 0%-5%, pigment 0%-5%, whipping agent 0.1%-50%.

Described toughner is chlorinatedpolyethylene, styrene butadiene thermoplasticelastomer, ethylene-vinyl acetate copolymer, terpolymer EP rubber and ethylene-octene segmented copolymer, or their combination.

Described wax is polyethylene wax, ethylene-vinyl acetate copolymer wax, Microcrystalline Wax, clorafin, investment cast wax, Poly Propylene Wax, or their combination.

Described tackifying resin is C5 petroleum resin, C9 petroleum resin, hydrogenated aromatic petroleum resin, terpine resin, Gum Rosin, or their combination.

Described whipping agent be supercarbonate, carbonate, polycarboxylate, polycarboxylate, sulfonyl hydrazide, Cellmic C 121, Urea,amino-, expended microsphere, or their combination.

The preparation process of material of the present invention is:

1) by stearic acid, oxidation inhibitor, pigment, whipping agent and toughner, wax, tackifying resin high-speed mixing 0.1-2000 minute, by twin screw extruder mixing plasticizing also granulation, make high density master batch, stearic acid, oxidation inhibitor, pigment, whipping agent gross weight account for the 0.5%-80% of master batch weight;

2) by master batch and toughner, wax, tackifying resin high-speed mixing 0.1-2000 minute, master batch accounts for the 0.5%-50% of gross weight;

3) by twin screw extruder mixing plasticizing, and by dicing machine granulation;

4) by single screw extrusion machine wire drawing, the silk of pull-out can be directly used in 3D and print;

5) goods that 3D prints are put foam to the baking oven 0.1-60 minute of 100-220 DEG C, form end article.

Accompanying drawing explanation

Accompanying drawing 1 is 3D print pattern on fabric.

The final foaming effect of accompanying drawing 2.

Embodiment

For allowing above-mentioned feature and advantage of the present invention become apparent, hereafter elaborate for embodiment.

One, by following component proportion (mass percentage):

Two, preparation method

Step prepared by this material is (calculating by material total mass 100g):

1) weigh the peaceful stearic acid 1801 of 4g section, 1gBASF irgasfos 168,2g Koster KR312,5g expandable microspheres 951DU120 and 14gDowPOE8411,25gBASFLuwaxEVA3, put into high mixer high-speed stirring 10min

TS1/℃	TS2/℃	TS3/℃	TS4/℃	TS5/℃	TS6/℃	FR/％	n/r/min
								70	75	85	100	100	80	10	50

2) put into the plasticizing of HAAKE twin screw extruder extrude and use dicing machine granulation, processing condition:

3) master batch and 15gBASFLuwaxEVA3,14gDowPOE8411 and 20g Hengfeng C9 petroleum resin are put into high mixer high-speed stirring 5min.

TS1/℃	TS2/℃	TS3/℃	TS4/℃	TS5/℃	TS6/℃	FR/％	n/r/min
								75	78	85	95	95	85	15	80

4) put into the plasticizing of HAAKE twin screw extruder extrude and use dicing machine granulation, processing condition:

5) grain made is put into single screw extrusion machine wire drawing and rolling, the silk of pull-out can be directly used in 3D and print, processing condition:

One district/DEG C	2nd district/DEG C	Die orifice/DEG C	Rotating speed n/r/min
				85	95	80	700

6) goods printed are put into the baking oven 8 minutes of 160 DEG C, carry out foaming operation, form end article.

Claims (6)

1. a foamable 3D printed material, is characterized in that, formulated by following raw materials by weight: toughner 5%-80%, wax 5%-90%, tackifying resin 1%-60%, stearic acid 0%-20%, oxidation inhibitor 0%-5%, pigment 0%-5%, whipping agent 0.1%-50%.

2. 3D printed material as claimed in claim 1, it is characterized in that: described toughner is chlorinatedpolyethylene, styrene butadiene thermoplasticelastomer, ethylene-vinyl acetate copolymer, terpolymer EP rubber and ethylene-octene segmented copolymer, or their combination.

3. 3D printed material as claimed in claim 1, is characterized in that: described wax is polyethylene wax, ethylene-vinyl acetate copolymer wax, Microcrystalline Wax, clorafin, investment cast wax, Poly Propylene Wax, or their combination.

4. 3D printed material as claimed in claim 1, is characterized in that: described tackifying resin is C5 petroleum resin, C9 petroleum resin, hydrogenated aromatic petroleum resin, terpine resin, Gum Rosin, or their combination.

5. 3D printed material as claimed in claim 1, is characterized in that: described whipping agent be supercarbonate, carbonate, polycarboxylate, polycarboxylate, sulfonyl hydrazide, Cellmic C 121, Urea,amino-, expended microsphere, or their combination.

6. a preparation method for 3D printed material as claimed in claim 1, is characterized in that:

1) by stearic acid, oxidation inhibitor, pigment, whipping agent and toughner, wax, tackifying resin high-speed mixing 0.1-2000 minute, plasticizing is mixed very much and granulation by twin screw extruder, make high density master batch, stearic acid, oxidation inhibitor, pigment, whipping agent gross weight account for the 0.5%-80% of master batch weight;

2) by master batch and toughner, wax, tackifying resin high-speed mixing 0.1-2000 minute, master batch accounts for the 0.5%-50% of gross weight;

3) by twin screw extruder mixing plasticizing, and by dicing machine granulation;

4) by single screw extrusion machine wire drawing, the silk of pull-out can be directly used in 3D and print;

5) goods that 3D prints are put foam to the baking oven 0.1-60 minute of 100-220 DEG C, form end article.