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A kind of modified attapulgite, preparation method and application in low-smoke halogen-free flame retardant cable

A technology of attapulgite and flame retardant cable material, which is applied in the field of flame retardant materials and can solve the problem that the cable cannot be guaranteed not to fire.

Active Publication Date: 2020-05-12
JIANGSU BAOYUAN GAOXIN ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the flame retardancy of wire and cable is very important, but no one can guarantee that the cable will not catch fire during use, or even a flame-retardant cable with an oxygen index exceeding 32 will also catch fire in a specific environment

Method used

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  • A kind of modified attapulgite, preparation method and application in low-smoke halogen-free flame retardant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of modified attapulgite: calcinate attapulgite at 300-350°C for 5 hours, and cool to room temperature naturally in a closed state to prevent secondary water absorption; according to the mass concentration of 30%-50%, the calcined attapulgite Configured as a tetrahydrofuran solution, the system as a whole was degassed 10 times, and then protected by nitrogen; 0.5M trimethylsilylacetylene lithium tetrahydrofuran solution was added to the above system, and the amount of trimethylsilylacetylene lithium was the mass fraction of attapulgite 0.5%, reflux reaction at 80°C for 5h; after the reaction was completed, remove tetrahydrofuran by distillation under reduced pressure, vacuum dry at 100°C for 12h, and transfer the dried modified attapulgite powder to a high-speed pulverizer in a nitrogen atmosphere without air contact , crushed to 2000~2500 mesh.

[0026] Preparation of pellets: The modified attapulgite and EVA prepared above were blended at a high speed at a ...

Embodiment 2

[0028] The difference from Example 1 is that the amount of lithium trimethylsilylacetylene is 5% of the mass fraction of attapulgite.

Embodiment 3

[0030] The difference from Example 1 is that the amount of lithium trimethylsilylacetylene is 7% of the mass fraction of attapulgite.

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Abstract

The invention discloses modified attapulgite. The modified attapulgite is attapulgite modified by lithium (trimethylsilyl) acetylide. According to the invention, the attapulgite is modified by lithium(trimethylsilyl) acetylide, so that the adding amount of the attapulgite in flame-retardant cable materials can be reduced, and the advantages of low smoke, low toxicity and low oxygen consumption are achieved. The modified attapulgite can be used as a flame-retardant synergist with excellent performance in producing low-smoke halogen-free flame-retardant green cables.

Description

technical field [0001] The invention belongs to the field of flame-retardant materials, and in particular relates to a modified attapulgite and a preparation method thereof and its application in low-smoke, halogen-free, flame-retardant cables, especially in the production of low-smoke, halogen-free, flame-retardant green cables. Background technique [0002] Attapulgite (soil) is also known as palygorskite clay, and its ideal chemical formula is (Mg 5 Si 8 o 20 (OH) 2 (OH 2 ) 4 4H 2 O), is a natural hydrated magnesium aluminum silicate mineral with a special rod-like and needle-like crystal structure, composed of MgO, Al 2 o 3 , SiO 2 The three components are formed in a certain proportion under high alkaline conditions, appropriate salinity and temperature medium environment. Due to different origins, the composition of attapulgite clay is slightly different. Generally speaking, attapulgite clay contains 70-80% attapulgite, 10-15% montmorillonite, sepiolite and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K3/34C08L23/08
CPCC08K3/34C08K9/06C08L23/0853
Inventor 张哲张元硕孙江波解朝辉雷自强
Owner JIANGSU BAOYUAN GAOXIN ELECTRIC
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