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Nitrocotton for flame-retardant celluloid and preparation method of nitrocotton product

A technology of nitrocellulose and celluloid, which is applied in the field of preparation of chemical plastic preparation products, and can solve the problems of small application range

Inactive Publication Date: 2015-04-29
刘新智
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the advancement of science and technology, since the 1970s, when many other new plastics came out one after another, due to the flammability and explosion of celluloid, its application range has gradually decreased.

Method used

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  • Nitrocotton for flame-retardant celluloid and preparation method of nitrocotton product
  • Nitrocotton for flame-retardant celluloid and preparation method of nitrocotton product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 2.6g of trichloroethyl phosphate into a container, add 14ml of acetone, stir to dissolve the trichloroethyl phosphate evenly, then add 9g of celluloid-grade nitrocellulose, knead manually to make it fully plasticized, and dry in the air After that, nitrocellulose for flame retardant celluloid was obtained. After 12 hours, use a match to ignite the nitrocellulose, which is difficult to ignite. Even if it is lit, once the fire source leaves, the flame on the nitrocellulose will go out very quickly.

Embodiment 2

[0022] Get 35g of trichloropropyl phosphate and put it into the container, add 100g of acetone, stir to dilute and dissolve the trichloropropyl phosphate, then add the molten material to the kneader, then add 90g of nitrocellulose, start the kneader, After plasticizing for 30 minutes, nitrocellulose for flame retardant celluloid was obtained; after taking out the nitrocellulose, a calender was used to make a flame retardant celluloid plate with a thickness of about 2 mm. After the board is dried for 24 hours, it is difficult to ignite it with fire. Even if it is lit, once the fire source leaves, the flame on the board can be extinguished quickly.

Embodiment 3

[0024] Add 35g of tris(tribromoneopentyl) phosphate to the jacketed kneader, add 110g of cyclohexanone, heat to 48-55°C and stir to fully dissolve the phosphate ester, then process at a temperature not lower than 48°C Next, add 90g of nitrocellulose, continue stirring and kneading, and plasticize for about 30 minutes to obtain nitrocellulose for flame retardant celluloid. After discharging, filter and calender to make a flame retardant celluloid sheet. After the board is dried for 24 hours, it is difficult to light it with fire. Even if it is lit, once the fire source leaves, the flame on the board can be extinguished quickly.

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Abstract

The invention discloses a nitrocotton for flame-retardant celluloid and a preparation method of the nitrocotton product. The effective material compositions of the nitrocotton for the flame-retardant celluloid comprise celluloid-grade nitrocotton and a fire retardant; the preparation method comprises the following steps: dissolving the fire retardant into an organic solvent comprising a ketone or alcohol ether mixture or single alcohol; after stirring the solvated materials, adding nitrocotton to the solution; using manual work or a kneader to knead and plastify the materials, and drying after taking from the pot, so as to prepare the nitrocotton for the flame-retardant celluloid; using a calender to press the prepared nitrocotton to form a plate, drying and polishing the plates to obtain the flame-retardant celluloid plate as the flame-retardant celluloid nitrocotton product. The flame-retardant celluloid nitrocotton or the celluloid plate prepared from the material formula and prepared by the preparation method is an article that is difficult to ignite with soft fire or slow in burning speed even on fire, and can be self-quenched after getting away from the fire, is simple in formula, convenient to prepare, and good in safety performance, and has good economic benefits and social benefits.

Description

technical field [0001] The content of the present invention belongs to the technical field of preparation of chemical plastic preparation products, and relates to a kind of nitrocellulose for celluloid which is flame-retardant and has self-extinguishing property after being caught on fire and its manufacturing method, as well as nitrocellulose for celluloid products prepared from the nitrocellulose and its method of manufacture. Background technique [0002] As the earliest plastic products, celluloid products have played an important role in human life. However, with the advancement of science and technology, since the 1970s, when many other new plastics came out one after another, due to the flammability and explosion of celluloid, its scope of use has gradually decreased. However, compared with other plastics, celluloid still has many incomparable advantages, such as elasticity, good strength, high hardness, good transparency, and industrially easy to make various colorf...

Claims

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Application Information

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IPC IPC(8): C08L1/18C08K5/521C08K5/42
Inventor 刘新智
Owner 刘新智
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