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High-strength open-cell micro-porous plastic as well as preparation method and application thereof

A technology of microporous plastics and open cells, applied in the field of microporous plastics, can solve the problems of difficult control of micropore diameter and porosity, low mechanical strength of plastics, complicated process, etc., and achieve simple and fast preparation method and high water absorption rate , Good breathability and water permeability

Active Publication Date: 2014-06-11
国科广化(南雄)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above method for preparing open-cell microporous plastic products has the following defects: (1) low plastic mechanical strength
(2) The process is complicated and the process is long
(3) Difficult to control micropore diameter and opening ratio

Method used

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  • High-strength open-cell micro-porous plastic as well as preparation method and application thereof
  • High-strength open-cell micro-porous plastic as well as preparation method and application thereof
  • High-strength open-cell micro-porous plastic as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation of high-strength open-cell microporous plastics, the specific steps are as follows:

[0039] 7g styrene, 133g methyl methacrylate, 600g methyl methacrylate-butyl methacrylate copolymer PMMA-BMA (18-200 mesh), 50g polycarbonate PC (100 ~200 mesh), 5.0g Tween T-20, 4.7g di-(3,5,5-trimethylhexanoyl) peroxide (TMHP), 0.3g N,N-dimethylaniline (DMA) After mixing with 200g of water uniformly within 3 minutes to obtain the mixed solution, pour the mixed solution into the corresponding mold within 3 minutes, then place the mold in a room temperature of 5°C for curing, observe and record the curing time, and demould after curing to obtain High-strength open-cell microporous plastic sample 1. The compressive strength, bending strength, water absorption and air permeability of the samples were tested according to the corresponding test methods, and the test results are listed in Table 1.

Embodiment 2

[0041] A preparation of high-strength open-cell microporous plastics, the specific steps are as follows:

[0042] In a low temperature environment of 5°C, 7g styrene, 133g methyl methacrylate, 600g methyl methacrylate-isobutyl methacrylate copolymer PMMA-IBMA (18-200 mesh), 50g polycarbonate PC ( 100~200 mesh), 5.0g Tween T-20, 4.7g di-(3,5,5-trimethylhexanoyl) peroxide (TMHP), 0.3g N,N-dimethylaniline (DMA ) and 200g of water within 3 minutes to obtain a mixed solution, pour the mixed solution into the corresponding mold within 3 minutes, then place the mold in a room temperature of 20°C for curing, observe and record the curing time, and release the mold after curing. A high-strength open-cell microporous plastic sample 2 was obtained. The compressive strength, bending strength, water absorption and air permeability of the samples were tested according to the corresponding test methods, and the test results are listed in Table 1.

Embodiment 3

[0044] A preparation of high-strength open-cell microporous plastics, the specific steps are as follows:

[0045] 70g styrene, 42g methyl methacrylate, 28g methyl acrylate, 400g polymethyl methacrylate solid PMMA (18-500 mesh), 242g PMMA-BMA (18-200 mesh) in a low temperature environment of 15°C , 6.0g Tween T-60, 2.0g Span S-20, 8.0g dilauroyl peroxide (LPO), 2.0g DMA and 200g water were mixed uniformly within 3 minutes to obtain a mixed solution, and the mixed solution was mixed for 3 minutes Pour it into a corresponding mold, then place the mold in an environment with a room temperature of 15°C for curing, observe and record the curing time, and release the mold after curing to obtain a high-strength open-cell microporous plastic sample 3. The compressive strength, bending strength, water absorption and air permeability of the samples were tested according to the corresponding test methods, and the test results are listed in Table 1.

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Abstract

The invention discloses high-strength open-cell micro-porous plastic as well as a preparation method and application thereof. The preparation method comprises the following steps: rapidly mixing 14-20 percent by weight of vinyl monomer, 0.3-1.0 percent by weight of an oxidation-reduction initiator, 45-65 percent by weight of organic polymer solid powder, 0.1-0.8 percent by weight of emulsifier and 20-40 percent by weight of water uniformly at the temperature of 1-15 DEG C; rapidly adding into a mold for curing to obtain the high-strength open-cell micro-porous plastic. The yield compressive strength of the high-strength open-cell micro-porous plastic is more than 26MPa, the bending strength is more than 13MPa, and the water absorption is more than 20 percent. The high-strength open-cell micro-porous plastic has remarkable air permeability and water permeability, and can be used repeatedly. The preparation method is simple and convenient in process, can be cured and molded quickly at room temperature or in a way of heating slightly, is easy for industrial production, can be taken as a filter material, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of microporous plastics, and in particular relates to a high-strength perforated microporous plastic and its preparation method and application. Background technique [0002] Microporous plastic is a porous plastic product with plastic as the basic part and a large number of air bubbles inside. Microporous plastics are divided into open-cell microporous plastics and closed-cell microporous plastics. In the past, most of the research on microporous plastics was carried out around closed-cell microporous plastics. Compared with non-foamed plastics, the impact strength, toughness, fatigue life and strength-to-mass ratio of closed-cell microporous plastics, etc. The mechanical and physical properties have been greatly improved, and it can be used as a structural material, and has broad application prospects in industries such as construction, aviation, and automobiles. [0003] Open-cell microporous plastics refer to pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L33/10C08L33/08C08L69/00C08L67/02C08L25/14C08L59/00C08L25/12C08L51/08C08F220/14C08F220/18C08F212/08C08F220/06C08F220/28C08F283/06C08F4/40C08J9/28
Inventor 黄月文王斌
Owner 国科广化(南雄)新材料研究院有限公司
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