CN106317722A - Starch-filled PVA supporting material used for 3D printing, and preparation method thereof - Google Patents
Starch-filled PVA supporting material used for 3D printing, and preparation method thereof Download PDFInfo
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- CN106317722A CN106317722A CN201510342646.2A CN201510342646A CN106317722A CN 106317722 A CN106317722 A CN 106317722A CN 201510342646 A CN201510342646 A CN 201510342646A CN 106317722 A CN106317722 A CN 106317722A
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Abstract
The invention discloses a starch-filled PVA supporting material used for 3D printing, and a preparation method thereof. The main body material of the supporting material is polyvinyl alcohol (PVA), a biological raw material starch is used to fill, and a plasticizer and a lubricant are used as auxiliary materials; and blending extrusion of a PVA and starch mixture is carried out under guaranteed extrusion conditions by using a single screw extruder. The main components PVA and starch of the water-soluble 3D printing supporting material prepared from the starch-filled PVA composite material are environmentally friendly, so the supporting material has the advantages of easiness in degradation, good biocompatibility, good glossiness, good transparency, good hand feeling and good heat resistance. The supporting material is especially suitable for printing hollow-out products or hollow products, and can be very easily peeled from molded parts without damaging the profile of the molded parts due to complete dissolution of the PVA in water under certain conditions in order to realize a surface beautifying effect, so the values of the products are improved.
Description
Technical field
The present invention relates to the polymer composite that a kind of biomaterial is filled, be mainly used in 3D and print field, particularly relate to a kind of starch filled PVA backing material that can be used for 3D printing and preparation method thereof.
Background technology
It is a kind of rapid shaping technique that 3D prints, and it is based on mathematical model file, use powdery metal or plastics etc. can jointing material, carried out the technology of constructed object by the method successively printed.3D prints and is typically with what digital technology file printing machine realized.Often be used for modeling in the field such as Making mold, industrial design, after be gradually available for the direct manufacture of some products, had the parts using this technology to print.This technology has been applied at jewelry, footwear, industrial design, building, engineering and construction automobile, Aero-Space, dentistry and medical industries, education, GIS-Geographic Information System, civil engineering, gun and other field.
Fusion stacking forming technique (FDM) during 3D prints is utilizing works plastic wire (such as ABS, PLA etc.) characteristic of fusible accumulation near fusing point, prints three-dimensional article.When goods occurring cave in, hollow structure time, select backing material to carry out printing shaping, then impregnated in specific solution or atmosphere, make backing material fully dissolve, it is thus achieved that the goods of special construction.Backing material plays an important role in the printing of shaped piece, is related to the application that 3D prints.The development of 3D printing technique proposes new requirement to 3D printed material, as a example by melt extruding forming technique, need to consider plastics fuse dimension and nozzle temperature is designed by processability, to print large-scale hollow product, then must take into consideration how to separate the packing material at center with skin-material, must also consider that both have good caking property before separation, it is to avoid skin-material subsides.
Starch is a kind of natural polymer, and its wide material sources are various in style, with low cost, and can degrade under various natural environment, do not result in any pollution.PVA film has fabulous transparency and glossiness, bigger hot strength and tearing strength, good butter performance, fabulous barrier properties for gases, heat sealer with bonding, and poisture-penetrability is big, there is water solublity and biological degradability under certain condition, therefore, starch/PVA intermingling material can use as a kind of Biodegradable material.
The technical problem to be solved is that while that PVA has the advantage such as water soluble, degradable, but PVA hot-working character is poor, heating interval is narrower, exceed the interval that is heated and can cause PVA thermal decomposition, it is unfavorable for the popularization and application of PVA material, prints field at 3D and be unfavorable for the exploitation of backing material.The present invention mainly utilizes starch filled PVA raw material, and adds corresponding additive and improve mechanical property and the processing characteristics of composite, utilizes the price of starch relative moderate simultaneously, reduces the cost of backing material.
Summary of the invention
The research purpose of the present invention is to solve the research and development problem of PVA backing material, utilize the cheapness of starch and biology Class degradability, in conjunction with the water-soluble advantage of PVA, utilize single extruded by screw at high temp machine melt blending technique, use 3D to print production line, prepare a kind of starch filled PVA backing material that can be used for 3D printing.
In order to realize the purpose of foregoing invention, solving 3D with PVA as matrix resin and print problem present in backing material research and development and actual application, the present invention provides techniques below scheme:
(1) it is dried 3 ~ 4 hours in PVA raw material is respectively placed in 80 ~ 100 DEG C of thermostatic drying chambers；It is dried 2 ~ 3 hours in starch is respectively placed in 50 ~ 60 DEG C of thermostatic drying chambers.
(2) according to following components proportioning configuration experiment material: PVA70% ~ 80%, starch 20% ~ 30%, plasticizer 1% ~ 5%, lubricant 0.5% ~ 1%.
(3) above-mentioned experimental raw is placed in high-speed mixer it is sufficiently mixed 2 ~ 5 minutes, the experiment material being uniformly mixed.
(4) carry out extruding wire drawing, rolling by single extruded by screw at high temp machine by the experiment material of above-mentioned mix homogeneously, obtain can be used for the starch filled PVA backing material that 3D prints.
(5) it is an advantage of the current invention that: prepared by the method for the invention can be used for the starch filled PVA backing material that 3D prints, main body uses material to be PVA and starch, wherein PVA can be dissolved completely in water under certain condition, starch is cheap, and there is biodegradability, can be degradable under natural environment, free from environmental pollution.When the backing material utilizing starch filled PVA to make prints hollow out or hollow product, this backing material can be peeled off easily from forming part, and the profile of forming part also will not be damaged because of the stripping of backing material, thus reach enhancing surface effect, improve the effect of value of the product.
Detailed description of the invention
Set forth in the present invention is a kind of starch filled PVA backing material that can be used for 3D printing and preparation method thereof, is further illustrated below by way of specific embodiment, but the present invention is not limited only to following example.
Embodiment one
(1) it is dried 3 hours in PVA-LD raw material is placed in 80 DEG C of thermostatic drying chambers；It is dried 2 hours in starch is placed in 50 DEG C of thermostatic drying chambers.
(2) experiment material: PVA80%, starch (100 mesh) 20%, plasticizer epoxy soybean oil 1%, lubricating fluid paraffin 0.5% are configured according to following components proportioning.
(3) above-mentioned experimental raw being placed in high-speed mixer and be sufficiently mixed 2 minutes, the experiment material being uniformly mixed, wherein the temperature of high mixer is set to 40 DEG C, and rotating speed is 2300r/min
(4) by the experiment material of above-mentioned mix homogeneously by single extruded by screw at high temp machine extrusion wire drawing, control silk material diameter 1.75mm, rolling, obtaining can be used for the starch filled PVA backing material that 3D prints, wherein 6 sections of temperature of extruder are followed successively by 155 DEG C, 175 DEG C, 175 DEG C, 175 DEG C, 185 DEG C, 190 DEG C.Screw speed is 103r/min, and rate of feeding is 4.6 r/min
(5) the starch filled PVA backing material that can be used for 3D printing obtained by (4) is utilized to carry out hollow out product printing, print procedure is smooth, printing article surface is smooth, supporting construction is firm, cohesive force is good, gained surface nondestructive wound after utilizing normal-temperature water to be dissolved by backing material, dimensionally stable, without deformation, can be fully achieved 3D and print backing material requirement.
Embodiment two
(1) it is dried 3.5 hours in PVA CP-1220T10 is placed in 90 DEG C of thermostatic drying chambers；It is dried 2.5 hours in starch is placed in 55 DEG C of thermostatic drying chambers.
(2) experiment material: PVA70%, starch (150 mesh) 30%, environment-friendly plasticizer epoxyfuoic-oleic 3%, lubricant silicone oil 1% are configured according to following components proportioning.
(3) above-mentioned experimental raw being placed in high-speed mixer and be sufficiently mixed 3 minutes, the experiment material being uniformly mixed, wherein the temperature that arranges of high mixer is 40 DEG C, and rotating speed is 2500r/min
(4) by the experiment material of above-mentioned mix homogeneously by single extruded by screw at high temp machine extrusion wire drawing, control silk material diameter 1.75mm, rolling, obtaining can be used for the starch filled PVA backing material that 3D prints, wherein 6 sections of temperature of extruder are followed successively by 165 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, 195 DEG C.Screw speed is 110r/min, and rate of feeding is 5.2 r/min.
(5) utilize the polylactic acid water solublity 3D obtained by (4) to print backing material and carry out hollow out product printing, print procedure is smooth, printing article surface is smooth, cohesive force is good, gained surface nondestructive wound after utilizing normal-temperature water to be dissolved by backing material, dimensionally stable, without deformation, can be fully achieved 3D and print backing material requirement.
Claims (9)
1. one kind can be used for starch filled PVA backing material and preparation method thereof that 3D prints, and it is characterized by that what this support consumptive material was consists of PVA, starch, plasticizer, lubricant.
Preparation method the most according to claim 1, it is characterised in that the technology that the preparation of described backing material uses melt extrudes for single extruded by screw at high temp machine.
Preparation method the most according to claim 1, it is characterised in that starch used is one or more in 100 mesh, 150 mesh, 200 mesh, its proportioning is 30% ~ 40%.
Preparation method the most according to claim 1, it is characterised in that the PVA trade mark used is PVA-LD, one or more in CP-1220T10,2488 (300 mesh), and its proportioning is 60% ~ 70%.
Preparation method the most according to claim 1, it is characterised in that plasticizer used is one or more in epoxy soybean oil, epoxy acetic acid linoleic acid methyl ester, epoxyfuoic-oleic, epoxy silkworm chrysalis oil acid butyl ester.
Preparation method the most according to claim 1, it is characterised in that be with lubricator one or more in liquid paraffin, white oil, silicone oil.
7. according to a kind of starch filled PVA backing material that can be used for 3D printing according to any one of claim 1-5 and preparation method thereof, it is characterised in that the method employing following steps:
(1) it is dried 3 ~ 4 hours in PVA raw material is respectively placed in 80 ~ 100 DEG C of thermostatic drying chambers；It is dried 2 ~ 3 hours in starch is respectively placed in 50 ~ 60 DEG C of thermostatic drying chambers；
(2) according to following components proportioning configuration experiment material: PVA70% ~ 80%, starch 20% ~ 30%, plasticizer 1% ~ 5%, lubricant 0.5% ~ 1%；
(3) above-mentioned experimental raw is placed in high-speed mixer it is sufficiently mixed 2 ~ 5 minutes, the experiment material being uniformly mixed；
(4) carry out extruding wire drawing, rolling by single extruded by screw at high temp machine by the experiment material of above-mentioned mix homogeneously, obtain can be used for the starch filled PVA backing material that 3D prints.
Preparation method the most according to claim 7, the temperature that arranges of described high mixer is 30 DEG C ~ 45 DEG C, and rotating speed is 2000-4000r/min.
Preparation method the most according to claim 7,3 sections of warm area temperature of described extruder fuselage are followed successively by 150-170 DEG C, 170-190 DEG C, 170-190 DEG C, head temperature is 180 ~ 195 DEG C, machine folder temperature is 180 ~ 195 DEG C, eye mould temperature is 180 ~ 195 DEG C, screw speed is 110 ~ 130r/min, and rate of feeding is 5.0 ~ 7.5 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510342646.2A CN106317722A (en) | 2015-06-19 | 2015-06-19 | Starch-filled PVA supporting material used for 3D printing, and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510342646.2A CN106317722A (en) | 2015-06-19 | 2015-06-19 | Starch-filled PVA supporting material used for 3D printing, and preparation method thereof |
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| CN106317722A true CN106317722A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510342646.2A Pending CN106317722A (en) | 2015-06-19 | 2015-06-19 | Starch-filled PVA supporting material used for 3D printing, and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234430A (en) * | 2019-12-17 | 2020-06-05 | 四川大学 | Polyvinyl alcohol-based composite powder for selective laser sintering and preparation method thereof |
| TWI698317B (en) * | 2018-06-25 | 2020-07-11 | 晟銘電子科技股份有限公司 | Hollow member and preparing method thereof |
-
2015
- 2015-06-19 CN CN201510342646.2A patent/CN106317722A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI698317B (en) * | 2018-06-25 | 2020-07-11 | 晟銘電子科技股份有限公司 | Hollow member and preparing method thereof |
| CN111234430A (en) * | 2019-12-17 | 2020-06-05 | 四川大学 | Polyvinyl alcohol-based composite powder for selective laser sintering and preparation method thereof |
| CN111234430B (en) * | 2019-12-17 | 2021-04-02 | 四川大学 | Polyvinyl alcohol-based composite powder for selective laser sintering and preparation method thereof |
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Application publication date: 20170111 |