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Preparation methods for difficult-flammability celluloid raw material, and plates, bars and industrial products thereof

A celluloid and flame retardant technology, applied in the field of celluloid products and their manufacturing, can solve the problems of difficult drying in the subsequent process, affecting the flame retardancy, poor product plasticity, etc. Effect

Inactive Publication Date: 2017-01-04
刘新智
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This flame retardant celluloid nitrocellulose is composed of celluloid grade nitrocellulose and a flame retardant in a weight ratio of 60% to 80%: 20% to 40%. Although the nitrocellulose product has flame retardancy, the processing process adopts environmental protection. Hexanone is used as a solvent, except that the smell is unacceptable to the operator, and the post-process is not easy to dry; and the nitrocellulose product is still poor in product plasticity in practical applications, and if more camphor is used for plasticizing, it will affect the flame retardancy

Method used

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  • Preparation methods for difficult-flammability celluloid raw material, and plates, bars and industrial products thereof
  • Preparation methods for difficult-flammability celluloid raw material, and plates, bars and industrial products thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 2.8g of tris (2,3-dichloropropyl) phosphate and put it into a container, add 10ml of alcohol, stir to dissolve tris (2,3-dichloropropyl) phosphate evenly, then add 9g (water-containing alcohol 28%) celluloid grade nitrocellulose was added, manually kneaded to make it fully plasticized, and after drying, the flame retardant nitrocellulose for celluloid was obtained. After 24 hours, use a match to ignite the flocculent 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

[0030] Take 450g of tris(2,3-dichloropropyl)phosphate and 180g of chloroalkyl polyphosphate into the kneader, add 300g of acetone and 400g of ethyl acetate at room temperature, stir for 25-40 minutes to dissolve the mixture Finally, add 1500g (28-30% alcoholic water content, the same below) celluloid-grade nitrocellulose, 25g antimony white powder, and whitening agents accounting for about 2 / 1000 of the total weight of the product, and start the kneader. After being plasticized at 65-70°C for 75 minutes, nitrocellulose for flame-retardant celluloid was obtained; Inside, use a rubber mixer to press into a uniform rubber material with a thickness of 10-30mm, then heat-press at 20MPa, 75-95°C for 4 hours, park for more than 48 hours, plan, dry, release heat and cold press After flat glazing and other processes, a flame retardant celluloid white board or sheet is produced. The material will not catch fire after being engraved by a laser cutting plotter or engraved by laser techno...

Embodiment 3

[0032] In the kneader with jacket, add 450g three (2,3-dibromophenyl) phosphoric acid esters, 80g chloroalkyl polyphosphates, then add ethyl acetate 200g, butyl acetate 400g, ethanol 200g, in Stir at a temperature of 40-60°C to dissolve the material, add 1500g of celluloid-grade nitrocellulose and pearlescent agents, dyes and other additives accounting for 3 / 1000 of the total weight of the product, and then continue to stir and knead the contract at a process temperature of 65-70°C After 85 minutes, the nitrocellulose for flame-retardant celluloid was prepared. After the plasticized mass was press-filtered, it was pressed with a rubber mixer in the temperature range of 60-75°C to form a rubber compound with a thickness of 10-30mm, and then passed through 20MPa. , 75 ~ 95 ℃, hot pressing for 4 hours, parked for more than 48 hours, after flaking, drying, heat release, cold pressing, flattening and glazing, etc., the flame retardant celluloid transparent or translucent board or sh...

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Abstract

The invention discloses preparation methods for a difficult-flammability celluloid raw material, and plates, bars and industrial products thereof; difficult-flammability celluloid nitrocotton comprises effective material ingredients: 50%-75% of celluloid-graded nitrocotton, 20%-40% of a flame retardant, and 0-15% of an auxiliary agent; the flame retardant is added in an organic mixed solvent and is stirred until the flame retardant is dissolved; then the nitrocotton and the auxiliary agent are added, kneading is performed, and thus a difficult-flammability celluloid plasticzed material mass is obtained; the plasticized material mass is subjected to processing treatment by a spiral granulator, difficult-flammability celluloid material particles are obtained, and the plates, bars and industrial products thereof are prepared by a molding process. The invention also provides a manufacturing method of difficult-flammability celluloid which is scientific in formula and convenient to prepare, is obtained by only adjusting the formula under a principle without changing a conventional product production device and process production route, is flame-retardant and also has self extinguishing properties even if on fire.

Description

technical field [0001] The content of the invention belongs to the technical field of chemical plastic preparation products, and relates to a celluloid product which is flame-retardant and has self-extinguishing performance after being caught on fire and a manufacturing method thereof. Background technique [0002] As the early "king of plastics", celluloid products have made historical contributions to saving elephants and finding ivory substitutes; however, with the advancement of science and technology, since the 1960s, when many other new plastics have come out one after another, due to Due to the extremely flammable hidden danger 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 colorful and colorful buttons, hair clips, glasses frames, Decorative materials for organs, p...

Claims

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Application Information

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IPC IPC(8): C08L1/18C08K5/521C08K5/523C08K3/22
Inventor 刘新智
Owner 刘新智
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