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Controllable preparation method and device for microporouspolymer materials

A microporous polymer and injection device technology, applied in the field of microporous polymer materials, can solve problems such as foaming behavior and difficult control of the process, and achieve the effects of easy popularization and application, simple preparation process, and low input cost

Inactive Publication Date: 2011-10-19
国家复合改性聚合物材料工程技术研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects that the foaming behavior and process are difficult to control when the existing chemical method produces microporous polymer materials, and to provide a controllable preparation method of microporous polymer materials and the used in this method. Device with controllable cavity volume and temperature

Method used

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  • Controllable preparation method and device for microporouspolymer materials
  • Controllable preparation method and device for microporouspolymer materials
  • Controllable preparation method and device for microporouspolymer materials

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: Foaming resin Composition: 80 parts by weight of PS (polystyrene) resin matrix material, 10 parts by weight of AC foaming agent masterbatch and 10 parts by weight of auxiliary agent masterbatch.

[0020] like figure 1 As shown, first connect the heating tube 5, control the temperature of the cavity of the device at 100°C, adjust the movement of the piston module 1 through an external electric or hydraulic system, and move the piston module 1, so that the initial thickness of the cavity of the device in the mold clamping state is 6mm . Melt and mix PS, AC foaming agent masterbatches and auxiliary agent masterbatches in the barrel of an ordinary injection machine to obtain a resin melt, and the resin melt is injected into the cavity 3 through the runner 4 through the injection nozzle of the ordinary injection machine, Immediately after the injection, move the piston module 1 to increase the initial thickness of the cavity 3 by 0.3mm, 0.6mm, 0.9mm, 1.2mm, 1....

Embodiment 2

[0023] Example 2: Foaming resin composition: 76 parts by weight of PS resin matrix material, 4 parts by weight of nano-montmorillonite, 10 parts by weight of AC foaming agent masterbatch and 10 parts by weight of auxiliary agent masterbatch. Prepare PS / nanometer montmorillonite material according to the method for embodiment 1, cell structure characteristic is as shown in table 2:

[0024] Table 2

[0025]

Embodiment 3

[0026] Example 3: Prepare microporous PS materials with the same shape (both thicknesses are 7mm) and different foam structures, and the raw material composition of the foam resin is the same as that in Example 1. First, according to the needs of different foaming structure characteristics, under the condition that the final sample thickness is guaranteed to be 7mm, the secondary movement distance of piston module 1 is selected as 0.7mm, 1.26mm, 2.38mm and 5.32mm (that is, the second movement distance is 7mm) 10%, 18%, 34% and 76%), that is, the initial thickness of each material is 7mm, 6.3mm, 5.74mm, 4.62mm and 1.68mm respectively.

[0027] like figure 1 As shown, first connect the heating pipe 5, control the cavity temperature at 100°C, and move the cavity piston module 1 through an external hydraulic system, so that the cavity thickness of the device in the mold clamping state is 7mm, 6.3mm, and 5.74mm respectively. , 4.62mm and 1.68mm. Melt and mix PS, AC foaming agent ...

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Abstract

The invention discloses a controllable preparation method and a device for microporouspolymer materials, which comprises the procedures of feeding, fusing and mixing as well as injection moulding, wherein the injection moulding is used for injecting fused and mixed microporouspolymer materials into a device cavity and then the size and temperature of the device cavity are adjusted to obtain the microporouspolymer material. The invention also discloses a device with controllable cavity size and temperature. The controllable preparation method is improved on the basis of the traditional chemical technique; melted resin in a cavity can obtain different release states and temperature states by controlling the size and temperature of the cavity of a material forming device, thus obtaining the microporouspolymer without different foaming behaviors and cellular structure characteristics. The method can be directly applied to a common injection machine, has low device transformation difficulty and low input cost, is easy to popularize and apply, can obtain microporouspolymer samples and products by changing the shapes and sizes of the cavity, and can be broadly applied on fields like scientific experiment and research and auto parts, home appliances production, etc.

Description

technical field [0001] The invention relates to the technical field of microporous polymer materials, in particular to a controllable preparation method of microporous polymer materials and a device used in the preparation method. Background technique [0002] Microcellular foamed plastic is a new type of structural functional material developed in the past 30 years. It refers to a kind of cell diameter in the range of 0.1-100 μm (cell diameter is hundreds of times smaller than that of ordinary foam plastics), and the material density is comparable to that of foamed plastics. New engineering structural plastics with a reduction of 5% to 95%. The basic concept of microcellular foaming was first proposed by researchers at the Massachusetts Institute of Technology in 1981. The design idea is to strengthen and toughen polymer materials by preparing bubbles smaller than the critical crack size of polymer materials to reduce Increase material density and reduce material weight, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/02B29C44/34B29C44/42B29C44/60
Inventor 朱建华何力贾仕奎武毅柯昌月单志张纯龚维
Owner 国家复合改性聚合物材料工程技术研究中心