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Polyurethane composite material and preparation method thereof

A technology of polyurethane and composite materials, applied in the field of polyurethane composite materials and their preparation, can solve the problems of high recovery cost, high cost, easy rust and the like, and achieves low cost, low water absorption, The effect of high safety

Inactive Publication Date: 2012-11-07
DONGGUAN SITUODA OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shells of general LED lamps on the market are made of metal materials such as aluminum and stainless steel. Metal materials have disadvantages such as high cost, easy to rust, no heat resistance, and high recycling costs.

Method used

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  • Polyurethane composite material and preparation method thereof
  • Polyurethane composite material and preparation method thereof
  • Polyurethane composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, preparation polyurethane comprises following raw material:

[0030]

[0031] The PU resin in the formula is preferably water-based polyurethane, and the water-based polyurethane (PU) can be 80UD of BAYER company, D-16 of BASF company, W2901H of WITTCOL company or anionic external emulsification water-based polyurethane ester (PU). In this embodiment, the inorganic flame retardant is preferably aluminum hydroxide, the filler is preferably lime powder, the heat stabilizer is preferably tribasic lead sulfate, the light shielding agent is preferably titanium dioxide, the lubricant is preferably calcium stearate, and the curing agent is preferably 2- Ethyl-4-methylimidazole.

[0032] The specific preparation method is as follows:

[0033] Step 1: Use an electronic scale to weigh various raw materials by weight percentage;

[0034] Step 2: Mix 41 parts of polyurethane, 4 parts of aluminum hydroxide, and 52.45 parts of lime powder in a mixer at high speed f...

Embodiment 2

[0043] Embodiment 2, preparation polyurethane comprises following raw material:

[0044]

[0045] The specific preparation method is as follows:

[0046] Step 1: Use an electronic scale to weigh various raw materials by weight percentage;

[0047] Step 2: Mix 42 parts of polyurethane, 4.5 parts of aluminum hydroxide, and 50.5 parts of lime powder in the formula in a mixer at high speed for 5-10 minutes, and then add 0.6 parts of tribasic sulfuric acid in sequence after stirring evenly After lead, 0.2 parts of titanium dioxide, 0.8 parts of calcium stearate, and 1.4 parts of 2-ethyl-4-methylimidazole, continue to stir and mix for 2-4 minutes;

[0048] Step 3: Take out the mixed liquid obtained in step 2, pour it into the epoxy resin model mold, and vibrate the epoxy resin mold manually or by machine for 20-30 minutes at room temperature;

[0049] Step 4: Open the epoxy resin model mold, and remove the cured and formed complete product from the mold.

Embodiment 3

[0050] Embodiment 3, preparation polyurethane comprises following raw material:

[0051]

[0052]

[0053] The specific preparation method is as follows:

[0054]Step 1: Use an electronic scale to weigh various raw materials by weight percentage;

[0055] Step 2: Mix 43 parts of polyurethane, 5 parts of aluminum hydroxide, and 48.55 parts of lime powder in a mixer at high speed for 5-10 minutes, and then add 0.65 parts of tribasic sulfuric acid in sequence after stirring evenly After lead, 0.3 parts of titanium dioxide, 0.9 parts of calcium stearate, and 1.6 parts of 2-ethyl-4-methylimidazole, continue to stir and mix for 2-4 minutes;

[0056] Step 3: Take out the mixed liquid obtained in step 2, pour it into the epoxy resin model mold, and vibrate the epoxy resin mold manually or by machine for 20-30 minutes at room temperature;

[0057] Step 4: Open the epoxy resin model mold, and remove the cured and formed complete product from the mold.

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Abstract

The invention relates to a polyurethane composite material and a preparation method thereof and belongs to the field of macromolecular materials. The polyurethane composite material consists of the following components: 40 to 48 percent of polyurethane, 3 to 8 percent of flame retardant, 45 to 54 percent of filler, 0.5 to 1 percent of heat stabilizer, 1 to 2 percent of curing agent, 0.05 to 0.5 percent of light screener and 0.5 to 1.5 percent of lubricating agent. The preparation method comprises the following steps: uniformly mixing each formula; and preparing the finished product by a forming process to obtain the polyurethane composite material. The polyurethane composite material prepared according to the method has excellent properties such as high safety, high weather resistance, low cost, high flame retardance, low water absorption, heat-preserving property, no toxicity and the like, and is widely applied to the fields of light-emitting diode (LED) lamp shells and other heat-preserving materials.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polyurethane composite material and a preparation method thereof. Background technique [0002] With the global energy shortage, the governments of various countries pay more and more attention to energy conservation and emission reduction, and the demand for an alternative energy source becomes more and more urgent. In recent years, with the continuous development of LED lighting technology, the demand for LED lampshades has continued to increase, which has promoted the development of the LED lampshade market, and the requirements for performance have also continued to increase. However, the shells of general LED lamps on the market are made of metal materials such as aluminum and stainless steel. The metal materials have disadvantages such as high cost, easy to rust, no heat resistance, and high recycling cost. Contents of the invention [0003] The purpose of the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/02C08K3/22C08K5/3445C08K5/098C08K3/30F21V3/04F21Y101/02
Inventor 邓一军
Owner DONGGUAN SITUODA OPTOELECTRONICS
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