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Environment-friendly flame-retardant modified hips LCD TV shell and preparation method thereof

An environment-friendly, LCD TV technology, applied in the field of HIPS LCD TV casing and its preparation, can solve the problems of poor mechanical properties and appearance quality, difficulty in uniform dispersion, human body and environmental hazards, etc., to improve production stability and finished products High efficiency, simple preparation method, good comprehensive performance

Active Publication Date: 2016-04-27
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of decabromodiphenylethane flame retardant in flame-retardant HIPS materials solves the problems of flame retardancy and toxicity, in order to make the TV casing meet the required UL94V-0 flame retardancy level, the required amount of addition is relatively large. And it will make it difficult to disperse all of them evenly in the polymer matrix, resulting in a decrease in the physical-mechanical properties of the flame-retardant HIPS material, such as impact strength, bending strength and other indicators, as well as affecting the appearance quality of the TV casing
[0005] To sum up, if we continue to use the synergistic flame retardant system composed of polybrominated biphenyls, polybrominated diphenyl ethers and antimony oxide to make flame-retardant HIPS TV casings, it will cause continuous harm to the human body and the environment, and it does not comply with EU R o Requirements of HS Directive and REACH regulations; the use of flame retardant effect is good and in line with EU R o The decabromodiphenylethane flame retardant in the HS Directive and REACH Regulations still has the disadvantages of poor mechanical properties and appearance quality in making flame-retardant modified HIPS LCD TV casings; the existing process for making flame-retardant modified HIPS LCD TV casings is still Need to be improved to meet the needs of the market and environmental protection

Method used

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  • Environment-friendly flame-retardant modified hips LCD TV shell and preparation method thereof
  • Environment-friendly flame-retardant modified hips LCD TV shell and preparation method thereof
  • Environment-friendly flame-retardant modified hips LCD TV shell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The mass ratio of raw materials is: HIPS resin (rubber mass fraction 6%, MFR=6.8g / 10min) 62.8, GPPS resin (MFR=9.6g / 10min) 10.2, thermoplastic styrene-butadiene rubber (mass ratio S / B=30 / 70 , MFR=0.5g / 10min) 5.5, decabromodiphenylethane 12.5, ultra-fine high-purity antimony trioxide 4.2, naphthenic oil (100 ° C kinematic viscosity = 10.5mm 2 / s) 4, antioxidant B2150.4, zinc stearate 0.3, ethylene bis stearic acid amide 0.2, carbon black (coloring strength 105%) 1.5.

[0032] Preparation:

[0033] ①Preparation of functional additive masterbatch: Soak carbon black pigment and mineral oil at room temperature for 42 hours, then add and grind 4 times in a three-roll mill with a roll temperature of 35°C to make a carbon black slurry with a particle size of 2.5-10 μm. Add thermoplastic styrene-butadiene rubber, decabromodiphenylethane, ultra-fine high-purity antimony trioxide, antioxidant B215, lubricant and carbon black slurry into the high-speed mixer, and start the low-spe...

Embodiment 2

[0037] The mass ratio of raw materials is: HIPS resin (rubber mass fraction 8%, MFR=4.8g / 10min) 40, GPPS resin (MFR=11.2g / 10min) 30, thermoplastic styrene-butadiene rubber (mass ratio S / B=20 / 80 , MFR=2.0g / 10min) 8, decabromodiphenylethane 12, ultra-fine high-purity antimony trioxide 6, naphthenic oil (100 ° C kinematic viscosity = 9mm 2 / s) 3, antioxidant B2150.3, zinc stearate 1.0, carbon black (coloring strength 118%) 1.2.

[0038] Preparation:

[0039]①Preparation of functional additive masterbatch: Soak carbon black pigment and mineral oil at room temperature for 40 hours, then add and grind 4 times in a three-roll mill with a roll temperature of 35°C to make a carbon black slurry with a particle size of 2.5-10 μm. Add thermoplastic styrene-butadiene rubber, decabromodiphenylethane, ultra-fine high-purity antimony trioxide, antioxidant B215, lubricant and carbon black slurry into the high-speed mixer, and start the low-speed mixer below 500rpm in the high-speed mixer. St...

Embodiment 3

[0043] The mass ratio of raw materials is: HIPS resin (rubber mass fraction 6%, MFR=6.8g / 10min) 52, HIPS resin (rubber mass fraction 8%, MFR=4.8g / 10min) 11, GPPS resin (MFR=9.6g / 10min) 10min) 10, thermoplastic styrene-butadiene rubber (mass ratio S / B=30 / 70, MFR=1.0g / 10min) 5, decabromodiphenylethane 16, ultrafine high-purity antimony trioxide 4, naphthenic oil ( Kinematic viscosity at 100℃=15mm 2 / s) 5, antioxidant B2150.2, polyethylene wax 0.3, ethylene bis stearic acid amide 0.3, carbon black (coloring strength 121%) 0.9.

[0044] Preparation:

[0045] ①Preparation of functional additive masterbatch: Soak carbon black pigment and mineral oil at room temperature for 45 hours, then add and grind three times in a three-roll mill with a roll temperature of 45°C to make a carbon black slurry with a particle size of 5-10 μm. Add thermoplastic styrene-butadiene rubber, decabromodiphenylethane, ultra-fine high-purity antimony trioxide, antioxidant B215, lubricant and carbon black ...

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Abstract

The invention discloses an environment-friendly flame-retardant modified HIPS (high impact polystyrene) LCDTV (liquid crystal display television) casing and a preparation method thereof. The flame-retardant modified HIPS LCDTV casing contains no toxic and harmful substances such as polybrominated biphenyls, poly brominated diphenyl ethers and the like, the restriction of the use of certain hazardous substances in electrical and electronic equipment and REACH (registration, evaluation, authorization and restriction of chemicals) regulation requirements are met, and the flammability meets the UL-94V-0 grade. The environment-friendly flame-retardant modified HIPS LCDTV casing comprises raw materials by mass as follows: 45-70 parts of HIPS resin, 5-30 parts of GPPS (general purpose polystyrene) resin, 5-10 parts of thermoplastic styrene butadiene rubber SBS, 10-16 parts of decabromodiphenyl ethane, 4-6 parts of antimonous trioxide, 3-7 parts of mineral oil, 0.2-0.5 part of an antioxidant B215, 0.5-1.0 part of a lubricant and 0.9-1.5 parts of carbon black.

Description

technical field [0001] The invention relates to a HIPS liquid crystal TV casing and a preparation method thereof, and more specifically relates to an environment-friendly flame-retardant modified HIPS liquid crystal television casing and a preparation method thereof. Background technique [0002] Synthetic resins are a type of high molecular polymers synthesized by chemical methods using polymerizable monomers. The most important application of synthetic resins is the manufacture of plastic products, and they are also used as basic raw materials for the manufacture of synthetic fibers, coatings, adhesives, etc. According to the different monomers used, there are many kinds of synthetic resins, including polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile-butadiene-styrene copolymer (ABS) is called the five general-purpose resins and is the most widely used synthetic resin material. Polystyrene is also known as general-purpose ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/04C08L25/06C08L53/02C08K13/02C08K5/03C08K3/22C08K5/01C08K3/04B29C47/92B29B9/06B29C45/78B29C45/77B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B9/06B29B9/12B29C48/40B29C48/875B29C48/92B29C2948/9218B29C2948/92333B29C2948/92676B29C2948/92704B29C2948/92895B29C2948/92904C08L51/04C08L25/06C08L53/02
Inventor 张军田挺胜徐国忠刘涛钱建培杨双柴瑞丹
Owner NANJING TECH UNIV
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