Cleaning agent of regenerated spinning polyester short fiber production raw material and preparation method thereof

A polyester staple fiber and cleaning agent technology, which is applied in inorganic/elemental cleaning compositions, non-ionic surface active compounds, etc., can solve the problem that the raw materials are easily mixed with impurities such as sediment and debris, and reduce the quality and raw materials of recycled polyester staple fibers. Problems such as large surface damage, to achieve the effect of easy control, less residue, and low operating temperature

Inactive Publication Date: 2009-12-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cleaning agent mainly has the following problems: First, because the density of the raw material is greater than that of the cleaning agent, the raw material is deposited at the bottom of the cleaning liquid during cleaning, so that the cleaned raw material is easy to be mixed with impurities such as sediment and debris; The cleaning agent must be used at high temperature (95-98°C) to give full play to the cleaning effect, so it is easy to make the raw materials after cleaning curl
The third is that the high concentration of sodium hydroxide will greatly damage the surface of the raw material, and the surface of the raw material after cleaning will be rough and the glossiness will be poor.
These have seriously reduced the quality of recycled polyester staple fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare 1000 kg of cleaning agent

[0021] Of which: water: 330 kg

[0022] Calcium chloride: 460 kg

[0023] Sodium hydroxide: 44 kg

[0024] Sodium tripolyphosphate: 44 kg

[0025] Sodium carbonate: 44 kg

[0026] Liquid water glass: 56 kg

[0027] Triethanolamine: 17 kg

[0028] Sodium dodecyl sulfonate: 5 kg

[0029] Add water and calcium chloride to the cleaning container successively, heat to about 60°C, and stir for 10-15 minutes until the calcium chloride is completely dissolved; then add sodium hydroxide, sodium tripolyphosphate, sodium carbonate, liquid water glass, Add triethanolamine and sodium dodecyl sulfonate into calcium chloride aqueous solution respectively, stir for 20-30 minutes until completely dissolved, and obtain a new cleaning agent for raw materials of recycled polyester staple fiber according to the present invention.

Embodiment 2

[0031] Prepare 1000 kg of cleaning agent

[0032] Of which: water: 300 kg

[0033] Calcium chloride: 420 kg

[0034] Sodium hydroxide: 90 kg

[0035] Sodium tripolyphosphate: 58 kg

[0036] Sodium carbonate: 47 kg

[0037] Liquid water glass: 60 kg

[0038] Triethanolamine: 20 kg

[0039] Sodium dodecyl sulfonate: 5 kg

[0040] Add water and calcium chloride to the cleaning container successively, heat to about 60°C, and stir for 10-15 minutes until the calcium chloride is completely dissolved; then add sodium hydroxide, sodium tripolyphosphate, sodium carbonate, liquid water glass, Triethanolamine and sodium dodecylsulfonate are respectively added into the calcium chloride aqueous solution, and stirred for 20-30 minutes until they are completely dissolved, thereby obtaining a new cleaning agent for raw materials of recycled polyester staple fiber according to the present invention.

[0041] In the formula of the present invention, the content of the first sodium hydrox...

Embodiment 3

[0043] Use cleaning agent of the present invention to clean regenerated spinning polyester staple fiber raw material:

[0044] (1) One ton of crushed material for PET beverage bottles purchased from the market uses a high-concentration sodium hydroxide aqueous solution cleaning agent and the cleaning agent prepared in Example 1 respectively.

[0045] (2) Construction method:

[0046] (1) Heat the high-concentration sodium hydroxide aqueous solution cleaning agent to 95°C, and heat the cleaning agent prepared in Example 1 to about 60°C.

[0047] (2) Pour the raw materials into the two cleaning agents respectively, and stir for 30 minutes.

[0048] (3) Take out the raw materials, pour them into a clear water pool and rinse with clear water.

[0049] (4) Shake off moisture and dry.

[0050] (3) Comparison: Using the cleaning agent prepared in Example 1, the raw material has no curl after cleaning, and the surface is smooth and transparent. Using a high-concentration sodium hy...

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PUM

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Abstract

The invention relates to a cleaning agent of regenerated spinning polyester short fiber production raw material and a preparation method thereof. The cleaning agent comprises the components in percentage by weight: 42-46 percent of calcium chloride, 4-9 percent of sodium hydroxide, 4-5.8 percent of trimeric sodium phosphate, 4-5 percent of sodium carbonate, 5.5-6 percent of liquid soluble silicate, 1.5-2 percent of trolamine, 0.5-1 percent of dodecyl sodium sulfate and 30-35 percent of water. The cleaning agent has high density, low use temperature, strong detergency, little damage to the surface of the raw material, high cleanliness of the cleaned raw material, simple preparation method and low cost and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of cleaning agents and preparation thereof, in particular to a cleaning agent for raw materials for producing recycled spun polyester staple fibers and a preparation method thereof. Background technique [0002] Recycled polyester staple fibers produced from recycled PET bottles and polyester waste are widely used as filling materials for furniture, toys and car decoration materials, and are also widely used in low-grade fabrics (such as blended towels). As an environmental protection industry that saves energy and protects the environment, recycled polyester spinning has broad prospects for development and huge market potential. It belongs to the circular economy industry that is encouraged by the state. [0003] Since the raw materials are crushed from recycled PET oil bottles, beverage bottles and polyester waste, there are a lot of impurities such as sand, debris, oil stains on the surface, so they must be cleaned...

Claims

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Application Information

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IPC IPC(8): C11D1/83C11D3/10
Inventor 原一高骆祎岚巫乐书
Owner DONGHUA UNIV
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