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Low-odor flame retardant styrene-based resin composition and preparation method thereof

A styrene-based resin and composition technology, applied in the field of resin composition and its preparation, can solve the problems of material pollution to the working environment, human injury, etc., and achieve the effects of reducing the risk of discoloration, reducing odor, and reducing the plasticizing temperature

Active Publication Date: 2012-03-14
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, brominated flame-retardant styrene resin is still one of the leading materials in the home appliance and OA industries. The odor of the material was often ignored by everyone in the past. However, as the size of the product becomes larger and larger, higher temperatures and higher temperatures are required to ensure molding. In a longer cycle, problems such as flame retardant degradation, free bromine and residual styrene monomer volatilization are gradually magnified, resulting in the pungent odor of the material during the molding process that pollutes the working environment, and the products caused by the above reasons are in use. The odor problem in the process is often complained by customers, and the possible human injury has aroused great concern. Although the home appliance industry has not yet had a formal odor standard and detection method, in some products such as LCD The odor of shell materials has become one of the important indicators of product use

Method used

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  • Low-odor flame retardant styrene-based resin composition and preparation method thereof
  • Low-odor flame retardant styrene-based resin composition and preparation method thereof
  • Low-odor flame retardant styrene-based resin composition and preparation method thereof

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Effect test

Embodiment 1～2

[0040] In order to realize the present invention, the inventors innovatively obtained a low-odor resin composition by adding phosphorus-containing compounds and hydrated metal oxides. The principle is as follows: 1) The plasticizing effect of phosphorus-containing compounds such as aromatic phosphate itself reduces the plasticizing temperature of the material and reduces the production of secondary oligomers in styrene resin; 2) P-Br synergistically stabilizes the heat The amount of bromine flame retardants with poor properties is reduced, which improves the thermal stability of the material and reduces the content of free bromine; 3) The endothermic effect during the dehydration process of hydrated metal oxides can reduce the heat loss caused by the overheating of the melt. The risk of flame retardant degradation and the generation of secondary oligomers; 4) the dehydration temperature of the hydrated metal oxide used in the present invention is close to the blending temperatu...

Embodiment 3

[0059] A preparation method of a low-odor flame-retardant styrene-based resin composition, the method comprising the following steps:

[0060] (1) Prepare materials according to the following components and parts by weight: 60kg of styrene-based resin, 10kg of impact modifier, 8kg of brominated flame retardant, 1kg of flame-retardant synergist, 0.5kg of phosphorus-containing compound, and 1kg of hydrated metal oxide , wherein the styrene-based resin is a styrene-butadiene-acrylonitrile terpolymer, the content of styrene residues is less than 200ppm, and the melt flow rate of the resin is 3g / 10min (ASTM D1238, test conditions: 200°C×5kg ), there is no irritating smell after baking at 80°C for 30 minutes, the impact modifier is styrene-butadiene block copolymer, the rubber content is 50wt%, and the brominated flame retardant is tetrabromobisphenol A, which is flame retardant The synergist is antimony trioxide with a particle size of less than 2000 meshes, the phosphorus compound...

Embodiment 4

[0064] A preparation method of a low-odor flame-retardant styrene-based resin composition, the method comprising the following steps:

[0065] (1) Prepare materials according to the following components and parts by weight: styrene-based resin 80kg, brominated flame retardant 20kg, flame-retardant synergist 5kg, phosphorus-containing compound 5kg, hydrated metal oxide 3kg, wherein styrene-based resin is Styrene-acrylate-acrylonitrile terpolymer, styrene residue content <100ppm, melt flow rate of the resin is 18g / 10min (ASTM D1238, test condition: 200℃×5kg), after baking at 80℃ for 30min There is no irritating odor, the brominated flame retardant is a mixture of decabromodiphenylethane and 2,4,6-tribromotriphenoxy-1,3,5-triazine, and the flame retardant synergist is colloid Antimony pentoxide, the molecular formula of phosphorus-containing compounds is as follows:

[0066]

[0067] R1, R2, R4, and R5 are respectively selected from C6, C10, and C12C20 aromatic groups substit...

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Abstract

The present invention relates to a low-odor flame retardant styrene-based resin composition and a preparation method thereof. The composition comprises the following components, by weight, 60-80 parts of a styrene-based resin, 0-10 parts of an impact modifier, 8-20 parts of a bromine-based flame retardant agent, 1-5 parts of a flame retardant synergist, 0.5-5 parts of a compound containing phosphorus and 1-3 parts of a hydrated metal oxide. The preparation method comprises: adding the raw materials excluding the hydrated metal oxide to a high-speed mixer to carry out premixing to obtain a premixed material; adding the premixed material and the hydrated metal oxide to a twin screw extruder; carrying out treatments of conveying, melting, shearing, extruding, cooling and pelletizing to obtain the product. According to the present invention, the compound containing the phosphorus and the hydrated metal oxide are added, such that the odor of the flame retardant styrene-based resin composition is improved to the maximal degree; the plasticizing temperature of the material is reduced, the thermal stability of the material is improved, such that the discoloration risk due to decompositionof the flame retardant agent is reduced, and the odor of the halogen flame retardant styrene-based material during the forming process and the product using process is effectively reduced.

Description

technical field [0001] The invention relates to a resin composition and a preparation method thereof, in particular to a low-odor flame-retardant styrene resin composition and a preparation method thereof. Background technique [0002] Due to its excellent rigidity, processability and surface gloss, styrene-based resins are widely used in various industrial fields, such as home appliances, office equipment, and printer copier panels. Requirements, usually need to reach UL94V0 level. [0003] Styrenic resins such as HIPS and ABS have an oxygen index of only 18.0 and are flammable materials. Usually, halogen compounds, phosphorus-containing compounds and inorganic flame retardants need to be added to endow styrene resins with flame retardant properties, among which halogen flame retardants are especially brominated Flame retardants are widely used in flame retardant styrenic resins due to their high flame retardant efficiency. [0004] At present, with the proposal of low-ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L51/00C08L51/04C08K13/02C08K5/523C08K3/22B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/9259B29C2948/92885
Inventor 宋治乾陈伶魏绪英周霆辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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