PVDF (Polyvinylidene Fluoride)/polyamide composite material used for 3D (Three-dimensional) printing, and preparation method and application thereof

A nylon composite material and composite material technology, applied in the field of PVDF/nylon composite material and its preparation, can solve the problems of low toughness, easy fracture, non-recoverable, etc., achieve anti-corrosion, good acid and alkali resistance, avoid damage, Environmentally friendly effect

Inactive Publication Date: 2017-01-11
上海辰云信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the mechanical properties of nylon materials are not perfect enough, such as the texture will become brittle in a dry environment, it is easy to break, and the toughness is not high, and it is easy to cause unrecoverable consequences after extrusion, so the use of nylon materials still has some limitations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A PVDF / nylon composite material for 3D printing, consisting of the following mass fraction components:

[0059] Nylon powder: 87.5%;

[0060] PVDF powder: 10.5%;

[0061] Silicon carbide: 1.5%;

[0062] 2,2-Methylenebis-(4-methyl-6-tert-butylphenol): 0.5%.

[0063] The preparation method of described composite material, comprises the following steps:

[0064] (1) Place the nylon raw material in a closed high-pressure container, first add water for heat treatment, the mass ratio of the nylon raw material to water is 1:15; the heat treatment conditions are: pressure 1.5MPa, temperature 120°C, treatment time 3h; then The heat-treated nylon is dried to obtain a nylon treated material;

[0065] (2) Put the nylon treatment material and methanol in a stirred reactor, and pass nitrogen into the reactor, raise the internal pressure to 1MPa, and the temperature to 180°C, and then soak the nylon treatment material in methanol by stirring , after the nylon treatment material i...

Embodiment 2

[0068] Compared with Example 1, it is the same as Example 1 except that the PVDF / Nylon composite material is composed of the following components by mass fraction.

[0069] Nylon powder: 87%;

[0070] PVDF powder: 11%;

[0071] Silicon carbide: 1.0%;

[0072] 2,2-Methylenebis-(4-methyl-6-tert-butylphenol): 1.0%.

Embodiment 3

[0074] Compared with Example 1, it is the same as Example 1 except that the PVDF / Nylon composite material is composed of the following components by mass fraction.

[0075] Nylon powder: 88%;

[0076] PVDF powder: 10%;

[0077] Silicon carbide: 1.5%;

[0078] 2,2-Methylenebis-(4-methyl-6-tert-butylphenol): 0.5%.

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Abstract

The invention relates to a PVDF (Polyvinylidene Fluoride) / polyamide composite material used for 3D (Three-dimensional) printing, and a preparation method and application thereof. The PVDF / polyamide composite material is prepared from the following components in percentage by mass: 87 to 88 percent of polyamide powder, 10 to 11 percent of PVDF powder, 1.0 to 1.5 percent of flow promoting agent and 0.5 to 1.5 percent of antioxidant. The PVDF / polyamide composite material provided by the invention is higher in hardness, shear strength and bending strength, is good in corrosion resistance and acidic and alkali resistance, and can be well applied to 3D printing; meanwhile, the preparation method of the PVDF / polyamide composite material provided by the invention can adopt a physical doping mode, the damage to the PVDF / polyamide composite material caused by chemical doping is avoided, and the PVDF / polyamide composite material is environmental-friendly.

Description

technical field [0001] The invention relates to the technical field of rapid prototyping materials, in particular to a PVDF / nylon composite material for 3D printing and its preparation method and application. Background technique [0002] 3D printing is a kind of "additive manufacturing technology", which has obvious advantages such as low manufacturing cost and short production cycle, and is known as "the most iconic production tool of the third industrial revolution". Different from the traditional material removal processing technology, 3D printing turns multi-dimensional manufacturing into a simple bottom-up two-dimensional superposition, which greatly reduces the complexity of design and manufacturing. However, it is also due to the forming principle of 3D printing that the lateral force of the formed object is often greatly reduced. In addition, the 3D printing polymer powder material needs to be formed by laser sintering, and unevenness and voids will inevitably appea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L27/16C08K3/22C08K3/16C08K5/13C08K3/34C08K3/36B33Y70/00
CPCC08L77/00B33Y70/00C08L27/16C08K3/34C08K5/13C08K3/36C08K2003/164C08K2003/2241
Inventor 余建国陈新康张凤兰杨峰
Owner 上海辰云信息科技有限公司
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