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Injection molding grade flame retardant PVC/ABS alloy material and preparation method thereof

An alloy material, injection molding technology, applied in the polymer field, can solve the problems of affecting the appearance and performance of the product, poor thermal stability, large smoke volume, etc., to improve processing stability, good thermal stability, and not easy to burn yellow burnt effect

Active Publication Date: 2014-01-15
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing PVC / ABS alloy has a large amount of smoke, poor thermal stability, and poor fluidity. It is prone to friction and heat during injection molding, resulting in degradation and yellowing, which seriously affects the appearance and performance of the product.

Method used

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  • Injection molding grade flame retardant PVC/ABS alloy material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0056] Another object of the present invention is to propose a method for preparing an injection-molded grade flame-retardant PVC / ABS alloy material with advantages such as good processing fluidity, good thermal stability, good flame retardancy and low smoke density. The steps of the method are as follows:

[0057] (1) Preparation of smoke suppressant: first prepare magnesium hydroxide coated with zinc hypophosphite by reacting zinc sulfate and sodium hypophosphite, and then prepare magnesium hydroxide coated with zinc hypophosphite in a weight ratio of (15~20):1 Magnesium is mixed with molybdenum oxide to obtain smoke suppressant;

[0058] (2) First weigh each component according to the formula amount, then put PVC resin, heat stabilizer and other additives into the high-speed mixer, stir at low speed for 30s, add plasticizer, and turn to high-speed mixing; when the temperature of the material rises When the temperature reaches 85°C, add processing aids; when the material tem...

Embodiment 1

[0062] This embodiment prepares the raw material composition of injection molding grade flame-retardant PVC / ABS alloy material as follows table 1:

[0063] components raw material name parts by weight PVC resin PVC resin 33 ABS resin ABS resin 36 Heat stabilizers Organotin Heat Stabilizer 3 Processing aids Methyl methacrylate-methyl acrylate core-shell copolymer 5 impact modifier Chlorinated polyethylene with a chlorine content of 30~45% 4 heat resistance modifier N-Substituted Maleimide Copolymer 2 plasticizer Diisononyl phthalate 2 flame retardant Long-chain chlorinated paraffin with a chlorine content of about 70% 5 smoke suppressant smoke suppressant 5 Other additives Phenolic Antioxidants 5

[0064] Table 1

[0065] The steps of a preparation method of an injection molding grade flame-retardant PVC / ABS alloy material are as follows:

[0066] (1) Preparation of smoke suppre...

Embodiment 2

[0070] This embodiment prepares the raw material composition of injection molding grade flame-retardant PVC / ABS alloy material as follows table 2:

[0071] components raw material name parts by weight PVC resin PVC resin 33 ABS resin ABS resin 38 Heat stabilizers epoxy compound 2 Processing aids Acrylic copolymer with core-shell structure 3 impact modifier Ethylene-propylene-diene terpolymer 4 heat resistance modifier α-Methylstyrene copolymer or blend 4 plasticizer Phosphite Antioxidants 3 flame retardant Decabromodiphenylethane + antimony trioxide 6 smoke suppressant smoke suppressant 4 Other additives Dioctyl terephthalate 3

[0072] Table 2

[0073] Compared with the preparation method of Example 1, the preparation method of this example differs in that the mass ratio of magnesium hydroxide coated with zinc hypophosphite to molybdenum oxide is 16:1.

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Abstract

The invention discloses an injection molding grade flame retardant PVC / ABS alloy material and a preparation method thereof. The alloy material comprises the following components in parts by weight: 30-80 parts of PVC resin, 35-70 parts of ABS resin, 1-6 parts of a heat stabilizer, 2-5 parts of a processing agent, 2-15 parts of an impact modifier, 1-10 parts of a heat resistant modifier, 2-5 parts of a plasticizer, 2-8 parts of a fire retardant, 3-10 parts of a smoke suppression agent and 3-15 parts of other accessory ingredients. The PVC / ABS alloy material disclosed by the invention adopts the high-fluidity PVC resin and the heat-resistance, high-toughness and high-fluidity ABS resin, so that the PVC / ABS alloy material has excellent mechanical performance and processing fluidity; on the premise of guaranteeing excellent physical performance of the material, the obtained PVC / ABS alloy material further improves the processing fluidity, the heat stability, the flame resistance and the heat resistance of products, and reduces the smoke density.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a low-smoke injection molding grade flame-retardant PVC / ABS alloy material, and also relates to a preparation method of the low-smoke injection molding grade flame-retardant PVC / ABS alloy material. Background technique [0002] Polyvinyl chloride (PVC) plastic has the advantages of flame retardancy, corrosion resistance, electrical insulation and adjustable softness and hardness, and it has good rigidity and high strength. However, its poor processability, low notched impact strength and heat distortion temperature, and high brittleness limit the application of polyvinyl chloride (PVC) plastics. [0003] Polyacrylonitrile-butadiene-styrene (ABS) plastic has good comprehensive properties, has high impact strength and surface strength in a wide temperature range, and has good compatibility with polyvinyl chloride (PVC) sex. [0004] In recent years, countries all over the wo...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L55/02C08K13/06C08K9/10C08K3/22
Inventor 何燕岭梁发雄张秀芹
Owner GUANGDONG JUSHI CHEM CO LTD
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