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Reinforcing and antistatic light polyurethane foam and preparation method thereof

A polyurethane foam and antistatic technology, applied in the field of lightweight polyurethane rigid foam, can solve the problems of high cost, complex chemical modification process, too large dispersion and density difference, etc. The effect of high foam rate

Inactive Publication Date: 2019-03-08
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the existing polyurethane foam can not take into account the reinforcement and the antistatic performance enhancement is difficult, there is too much difference in dispersion and density
The addition amount of nanomaterial reinforcement materials is relatively small, but there are also unsatisfactory enhancement effects
What's more, no matter what kind of nano-reinforcement is used, it needs to implement complex chemical modification process on its surface, which is costly

Method used

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  • Reinforcing and antistatic light polyurethane foam and preparation method thereof
  • Reinforcing and antistatic light polyurethane foam and preparation method thereof
  • Reinforcing and antistatic light polyurethane foam and preparation method thereof

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preparation example Construction

[0043] like figure 1 As shown, the preparation method of the lightweight polyurethane foam provided by the embodiments of the present invention has both reinforcement and antistatic properties, comprising the following steps:

[0044] S101: Emulsion synthesis method to synthesize conductive polymer;

[0045] S102: Conventional post-processing for synthesizing conductive polymers, collecting products by filtration, evaporation or freeze-drying;

[0046] S103: Add a metered oxidant; polymer monomer is diluted and added dropwise, and the reaction occurs for 6-24 hours; the product is routinely washed;

[0047] S104: post-treatment of small molecule reagents on the synthetic conductive polymer, soaking for 30 minutes to 24 hours;

[0048] S105: Effective mixing of conductive polymers with black or white materials for commercial polyurethane foams;

[0049] S106: The black material and the white material are fully mixed, and the foaming temperature is 10°C-50°C, and foamed to fo...

Embodiment 1

[0077] Embodiment 1: 1 gram of sodium dodecylbenzene sulfonate, 4..7 grams of ferric chloride are added to 100 milliliters of 50:50=H 2 O: CHCl 3 solution, after stirring for 0.5 h, a homogeneous solution was formed. 1 ml of pyrrole monomer was added to the solution to react for 24 hours to form a uniform black product. The product was washed with 150ml of methanol until the eluate was colorless and dried. Before foaming, soak the polypyrrole with the reinforcing agent for 24 hours and dry it, then blend the conductive compound with the black material, and foam it to obtain a conductivity of 10. 6-8 Ω·cm reinforced polyurethane foam with a density of 0.06g / cm 3 .

Embodiment 2

[0078] Embodiment 2: with 1 gram of sodium dodecylbenzene sulfonate, 4.66 gram of iron trichloride, 3ml 30%H 2 o 2 Add 100ml 30:70=H 2 O: CHCl 3 solution, after stirring for 0.5 h, a homogeneous solution was formed. 1 ml of pyrrole monomer was added to the solution to react for 24 hours to form a uniform black product. The product was washed with a mixture of methanol, water and methanol until the eluate was colorless. Before foaming, soak the polypyrrole with the reinforcing agent for 24 hours and dry it, then blend the conductive compound with the black material, foam, then blend the compound with the black material, and foam to obtain a conductivity of 10 6-8 Ω·cm polyurethane foam with a density of 0.05g / cm 3 .

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Abstract

The invention belongs to the technical field of light polyurethane rigid foams and discloses a reinforcing and antistatic light polyurethane foam and a preparation method thereof. The preparation method of the reinforcing and antistatic light polyurethane foam comprises synthesizing a conductive polymer through emulsion synthesis, and then adding in measuring oxidizing agent; adding in polymer monomers in a diluted and dropwise mode for reaction for 6-24 hours; performing normal washing, filtering, evaporating or freeze-drying treatment on collected reaction products; performing normal aftertreatment on the synthesized conductive polymer by soaking the synthesized conductive polymer in micromolecular agent for 30 minutes to 24 hours, wherein the micromolecular agent participates in the reaction to achieve reinforcement of polyurethane rigid foams with increasing the density of the polyurethane rigid foams; effectively mixing the conductive polymer with commercial polyurethane foaming black materials and white materials, specifically, fully mixing the black materials and the white materials at a foaming temperature of 10-50 DEG C for foaming production to obtain the light-weight andhigh-strength antistatic polyurethane foam. The preparation method of the reinforcing and antistatic light polyurethane foam is high in foaming capacity, and the prepared reinforcing and antistatic light polyurethane foam achieves an electric conductivity rate up to 106-108 ohm / cm2, a Shore hardness of 25-90 HD and a Rockwell hardness of 15-60 HRC.

Description

technical field [0001] The invention belongs to the technical field of lightweight polyurethane rigid foam, and in particular relates to a lightweight polyurethane foam with reinforcing and antistatic properties and a preparation method thereof. Background technique [0002] Polyurethane foam has good moisture and water resistance, heat insulation, sound insulation, shock resistance, light weight, and chemical corrosion resistance. It is widely used in building materials, mining, space filling, and automobile industries. In 2012, the share of polyurethane foam in the global market has reached 40.1 billion US dollars, and it is increasing year by year, and it is expected to reach 61.9 billion US dollars by 2018. The functionalization of polyurethane foam mainly includes the following types: antistatic, reinforcement, and flame retardant functional modification. Among them, the high-strength rigid polyurethane foam represented by rigid polyurethane foam with load-bearing stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L79/04C08G73/06C08J9/00
CPCC08G73/0611C08J9/0061C08J2375/04C08J2479/04C08L75/04C08L2201/04C08L79/04
Inventor 孟诗云吴彩霞
Owner CHONGQING TECH & BUSINESS UNIV
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