CN1188464C - Nylon powder used for high-speed laser sintered products - Google Patents
Nylon powder used for high-speed laser sintered products Download PDFInfo
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- CN1188464C CN1188464C CNB021103615A CN02110361A CN1188464C CN 1188464 C CN1188464 C CN 1188464C CN B021103615 A CNB021103615 A CN B021103615A CN 02110361 A CN02110361 A CN 02110361A CN 1188464 C CN1188464 C CN 1188464C
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Abstract
The present invention relates to a nylon powder material used for quick laser sintered forming products, which belongs to the technical field of laser beam machining parts. At present the forming powder material used for laser sintered quick forming product models (products) has PS and ABS, and prototype products manufactured by the two kinds of powder have the disadvantages of low strength, poor toughness and easy damage; the products need the technology of resin soaking after-treatment, hot baking and solidification, and have the defects of complicated technology and high manufacturing cost. The present invention adopts a chemical synthesis method combining surface treatment and modification technology to manufacture nylon powder material, and has the advantages of convenient manufacture technology and favorable sintering performance. Formed products (models) have the advantages of high intensity, good toughness, low product cost, etc. The present invention is especially suitable for the quick manufacture of new product models.
Description
Technical field
The invention belongs to laser beam processing parts class, relate to a kind of nylon powder material that is used for speed laser sintered products, be used for making fast the product innovation model, for the flexible production that realizes new product development provides novel material.
Background technology
Current, the competition in the international market of Industrial products is growing more intense, and in order to improve the competitive capacity of enterprise, the tempo of development of product innovation is most important.In research, the development phase of product innovation, auxiliary design method has been accelerated the speed of product design though the scientific research personnel uses a computer, but can only be by design paper and computer simulation, usually product design is assessed, can not be made directly reasonable structure, technological feasibility, the final effect of product design, estimate accurately.The way of dealing with problems has only by the model that manufactures a product (goods), and its material object is carried out outward appearance, size precision testing, material properties test, functional parameter experiment, can estimate the market competitiveness of product innovation.Traditional model manufacture adopts technologies such as compacting, mechanical workout, needs special mould, instrument, and the manufacturing cycle is long, the cost height.To complex-shaped part especially difficulty, reduced the speed that product is introduced to the market widely, reduced the market competitiveness of enterprise.
Laser sintering rapid prototyping technology is a new and high technology that grows up the nineties, it the is integrated new results in fields such as modern cnc technology, CAD/CAM technology, laser technology and novel material.Specifically, laser sintering rapid prototyping technology mainly is made up of following steps: (1) sets up the 3D solid cad model of goods in the computer machine, carry out slicing treatment with delamination software then, obtain the information of each processing aspect, and be translated into the work of electrical signal control laser scanning system; (2) on the shaping work platform, lay the fine and close powder for molding material uniformly of one deck, laser beam scans sintering according to the slicing layer surface information to the powder for molding material under computer control, bond together by the powder smelting of laser beam irradiation and in cooling process subsequently, finish the processing of first aspect; (3) successively spread powder, successively scan sintering, adopt above-mentioned superposition forming method, produce Three-dimensional Entity Components at last.Adopt the laser sintering rapid forming method, successfully solved the problem of " visible, mould not " of three-dimensional modeling in the computer aided design (CAD), produce the mock-up (goods) of product innovation fast.Directly carry out product design checking, performance test for the planner, thereby fast, economical ground designs evaluation, modification, perfect, has shortened new product development cycle.
The powder for molding that is used for laser sintering rapid forming product innovation model (goods) at present has polystyrene PS, ABS, the low toughness of the prototype product strength that utilizes these two kinds of powdered materials to make is relatively poor, damaged easily, can not be directly used in product assembling, interference detection and performance test, must solidify through the baking of resin pickup aftertreatment linkage heat, can use after improving its obdurability, complex process, manufacturing cost is higher.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the shortcoming of prior art, a kind of nylon powder material that is used for speed laser sintered products is provided, and it is easy that it has preparation technology, product sinter molding excellent property, the intensity height of moulded products, good toughness, advantage such as product cost is low.Be specially adapted to the quick manufacturing of product innovation model.
The present invention is achieved through the following technical solutions: a kind of nylon powder material that is used for speed laser sintered products, and its component is to add in the nylon powder that organic pellet is made: tensio-active agent, expanding material, light absorber, viscosity-depression agent, nucleator and organic filler; Its content adds in each kg nylon powder: tensio-active agent 1-10 gram, expanding material 5-200 gram, light absorber 0.1-5 gram, viscosity-depression agent 0.5-30 gram, nucleator 1-20 gram, organic filler 5-100 gram.Its step of preparation process is:
(1) preparation of nylon powder: the nylon powder is cooled to-60 ℃ in refrigerating apparatus--150 ℃, carry out grinding and processing, screening, make nylon powder;
(2) surface treatment: above-mentioned nylon powder is put into high-speed mixer, add vaporific, as to be dissolved in organic solvent tensio-active agent and light absorber, after high-speed stirring was even, oven dry made base-material;
(3) modification: add expanding material, viscosity-depression agent, nucleator, organic filler in the base-material after surface treatment, in high-speed mixer, mix;
(4) screening: the powder of above-mentioned modification is sieved in reciprocating sieve, obtain the nylon powder material of desired particle size.
Organic pellet of described preparation nylon powder is polyamide-based plastics, is selected from nylon 6 or nylon 66 or nylon 1010 or Ni Long11 or nylon 12;
Described tensio-active agent is dispersing tensio-active agent: be selected from Sodium dodecylbenzene sulfonate or methylene sodium diisopropylbenzenesulfonate;
Described expanding material is grafting or segmented copolymer: it is intoxicated or polyethylene-grafting toxilic acid is intoxicated or ethylene-vinyl acetate copolymer or chlorosulphonation polypropylene to be selected from polypropylene-grafting toxilic acid;
Described light absorber is benzophenone light absorber or benzotriazole category light absorber or hindered amines light absorber and ultraviolet quencher, and its middle-ultraviolet lamp quencher is selected from light stabilizer 2002 or UV327;
Described viscosity-depression agent is mineral filler: be selected from lime carbonate or talcum powder or white carbon black or glass sphere;
Described nucleator is a nanoparticle: be selected from nano silicon or nano aluminium oxide;
Described organic filler is powdered polypropylene or polyethylene powder or powdery polystyrene or powdery polymethylmethacrylate.
The present invention and the powdered material such as the polystyrene (PS) that can be used for speed laser sintered products, ABS compares, because major ingredient is a nylon powder, and through surface treatment and modified technique, make it have good laser sintered performance, goods need not to solidify through resin pickup aftertreatment and heat baking, can obtain the intensity height, the forming part of good toughness, can be directly used in solid model is carried out intensity, the check of performance, the reasonableness of checking product design structure, the feasibility of manufacturing process, the aesthetic property of moulding, time update, improve product design, with the needs in response market, thereby shorten construction cycle of product innovation greatly, reduce development cost, realize flexible production, make enterprise possess stronger competitive capacity.
Embodiment
Embodiment 1:
(1) get 1 kg nylon, 12 pellets and in refrigerating apparatus, be cooled to-60 ℃--150 ℃, pulverize, sieve, make nylon powder;
(2) with above-mentioned nylon powder in high-speed mixer, utilize spraying equipment to add tensio-active agent: Sodium dodecylbenzene sulfonate 1 gram, light absorber: light stabilizer 2002,0.1 gram is dried in vacuum drying oven after evenly through high-speed stirring, makes base-material;
(3) in above-mentioned base-material, add expanding material: intoxicated 5 grams of polypropylene-grafting toxilic acid, viscosity-depression agent: white carbon black 0.5 gram, nucleator: nano silicon 1 gram, filler: polypropylene powder 5 grams, in high-speed mixer, mix, make the nylon powder material through screening.
The following detailed process step of embodiment 2:(is with embodiment 1)
(1) get 1 kg nylon, 6 pellets, freezing, pulverize, screening;
(2) add tensio-active agent: methylene sodium diisopropylbenzenesulfonate 10 grams, light absorber: UV327,5 grams stir, dry;
(3) add expanding material: intoxicated 200 grams of polyethylene-grafting toxilic acid, viscosity-depression agent: lime carbonate 30 grams, nucleator: nano aluminium oxide 20 grams, filler; Polyethylene powder 100 grams mix, sieve.
Embodiment 3:
(1) get 1 kg nylon, 1010 pellets, freezing, pulverize, screening;
(2) add tensio-active agent: dialkyl group sodium sulfonate 2 grams, light absorber: light stabilizer 2002,2 grams stir, dry;
(3) add expanding material: polypropylene-grafting toxilic acid intoxicated 60 restrains, viscosity-depression agent: white carbon black 20 grams, nucleator: nano silicon 3 grams, filler: polypropylene powder 20 grams, mixing, screening.
Embodiment 4:
(1) get 1 kg nylon, 9 pellets, freezing, pulverize, screening;
(2) add tensio-active agent: dialkyl group sodium sulfonate 5 grams, light absorber: light stabilizer 2002,3 grams stir, dry;
(3) add expanding material: chlorosulphonation polypropylene 100 restrains, viscosity-depression agent: glass sphere 10 grams, nucleator: nano silicon 10 grams, filler: polymethylmethacrylate powder 50 grams, mix, sieve.
Embodiment 5:
(1) get 1 kg nylon, 66 pellets, freezing, pulverize, screening;
(2) add tensio-active agent: methylene sodium diisopropylbenzenesulfonate 3 grams, light absorber: UV327,2 grams stir, dry;
(3) add expanding material: ethylene-vinyl acetate copolymer 80 restrains, viscosity-depression agent: talcum powder 20 grams, nucleator: nano silicon 3 grams, filler: polypropylene powder 20 grams, mix, sieve.
Embodiment 6:
(1) get 1 kg nylon, 11 pellets, freezing, pulverize, screening;
(2) add tensio-active agent: Sodium dodecylbenzene sulfonate 2 grams, light absorber: light stabilizer 2002,2 grams stir, dry;
(3) add expanding material: polypropylene-grafting toxilic acid intoxicated 60 restrains, viscosity-depression agent: white carbon black 30 grams, nucleator: nano silicon 3 grams, filler: polypropylene powder 20 grams, mixing, screening.
Claims (3)
1, a kind of nylon powder material that is used for speed laser sintered products, it is characterized in that described powdered material, its component is to add in the nylon powder that organic pellet is made: tensio-active agent, expanding material, light absorber, viscosity-depression agent, nucleator, organic filler, its content is: add in each kg nylon powder: tensio-active agent 1-10 gram, expanding material 5-200 gram, light absorber 0.1-5 gram, viscosity-depression agent 0.5-30 gram, nucleator 1-20 gram, organic filler 5-100 gram, its step of preparation process is:
(1) preparation of nylon powder: the nylon powder is cooled to-60 ℃ in refrigerating apparatus--150 ℃, pulverize, sieve, make nylon powder;
(2) surface treatment: above-mentioned nylon powder is put into high-speed mixer, add vaporific, as to be dissolved in organic solvent tensio-active agent and light absorber by above-mentioned content ratio, the back oven dry that stirs makes base-material;
(3) modification: add expanding material, viscosity-depression agent, nucleator, organic filler by above-mentioned content ratio in the base-material after surface treatment, in high-speed mixer, mix;
(4) screening:, obtain the nylon powder material of desired particle size with powder screening in the mechanical shock sieve of above-mentioned modification.
2,, it is characterized in that organic pellet of described preparation nylon powder is polyamide-based plastics: be selected from nylon 6 or nylon 66 or nylon 1010 or Ni Long11 or nylon 12 according to the described nylon powder material of claim 1; Described tensio-active agent is dispersing tensio-active agent: be selected from Sodium dodecylbenzene sulfonate or methylene sodium diisopropylbenzenesulfonate; Described expanding material is grafting or segmented copolymer: it is intoxicated or polyethylene-grafting toxilic acid is intoxicated or ethylene-vinyl acetate copolymer or chlorosulphonation polypropylene to be selected from polypropylene-grafting toxilic acid; Described light absorber is benzophenone light absorber or benzotriazole category light absorber or hindered amines light absorber and ultraviolet quencher, and its middle-ultraviolet lamp quencher is selected from light stabilizer 2002 or UV327; Described viscosity-depression agent is mineral filler: be selected from lime carbonate or talcum powder or white carbon black or glass sphere; Described nucleator is a nanoparticle: be selected from nano silicon or nano aluminium oxide; Described organic filler is powdered polypropylene or polyethylene powder or powdery polystyrene or powdery polymethylmethacrylate.
3, according to claim 1 or 2 described nylon powder materials, the organic pellet that it is characterized in that described preparation nylon powder is a nylon 12, content is 1000 grams, additive and content are: tensio-active agent is Sodium dodecylbenzene sulfonate 2 grams, expanding material is intoxicated 60 grams of polypropylene-grafting toxilic acid, and light absorber is light stabilizer 2002,2 grams, and viscosity-depression agent is white carbon black 20 grams, nucleator is nano silicon 3 grams, and organic filler is polypropylene powder 20 grams.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021103615A CN1188464C (en) | 2002-04-26 | 2002-04-26 | Nylon powder used for high-speed laser sintered products |
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| CNB021103615A CN1188464C (en) | 2002-04-26 | 2002-04-26 | Nylon powder used for high-speed laser sintered products |
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| CN1188464C true CN1188464C (en) | 2005-02-09 |
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2002
- 2002-04-26 CN CNB021103615A patent/CN1188464C/en not_active Expired - Fee Related
Cited By (1)
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| CN102850808A (en) * | 2012-09-18 | 2013-01-02 | 中北大学 | Composite wax powder forming material for laser sintering and preparation method thereof |
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