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Halogen-free flame-retardant master batch

A flame retardant masterbatch and flame retardant technology, applied in the field of halogen-free flame retardant masterbatch, can solve the problems of easy decomposition, poor thermal stability, strong hygroscopicity of intumescent flame retardants, etc., and achieve easy dispersion and flame retardant efficiency High, easy processing and preservation effect

Active Publication Date: 2013-04-03
宁波一彬电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, intumescent flame retardants have the following disadvantages: 1. The polarity difference between intumescent flame retardants and polymers is very large, resulting in poor compatibility, which reduces the electrical and insulating properties of polymers, especially mechanical properties. Properties such as strength and toughness are greatly reduced; 2. Intumescent flame retardants have strong hygroscopicity
Such as APP / PER / MA intumescent flame retardant system, not only polyhydroxy PER is easy to absorb moisture, but also prone to alcoholysis between components, resulting in poor water resistance of flame retardant polymers; 3. Usually, the relative molecular weight of intumescent flame retardants is small , easy to migrate to the surface of the polymer, resulting in poor mechanical properties of flame retardant products, especially poor appearance; 4. Difficult to process, more small molecules of intumescent flame retardants, poor thermal stability, easy to decompose when heated, and NH3 will decompose during processing come out, causing the surface of the rod to be sticky and not easy to process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A halogen-free flame-retardant masterbatch, the halogen-free flame-retardant masterbatch is composed of the following raw materials in parts by mass:

[0023] Halogen-free flame retardant: 50 parts. In this embodiment, the halogen-free flame retardant is a phosphorus-nitrogen intumescent flame retardant, and the flame retardant is composed of an acid source, a gas source, and a carbon source in a mass ratio of 1:1: 1, the acid source described in this embodiment is ammonium polyphosphate, the gas source is melamine, and the carbon source is pentaerythritol.

[0024] Polyolefin carrier: 30 parts. In this embodiment, LDPE is used as the polyolefin carrier.

[0025] Silicone oil: 1.5 parts. In this embodiment, the silicone oil is methyl silicone oil.

[0026] Coupling agent: 1.5 parts. In this embodiment, a solid titanate coupling agent with a molecular weight greater than 800 is used as the coupling agent.

[0027] When preparing, first weigh the above raw materials acc...

Embodiment 2

[0029] A halogen-free flame-retardant masterbatch, the halogen-free flame-retardant masterbatch is composed of the following raw materials in parts by mass:

[0030] Halogen-free flame retardant: 30 parts. In this embodiment, the halogen-free flame retardant is a phosphorus-nitrogen intumescent flame retardant, and the flame retardant is composed of an acid source, a gas source, and a carbon source in a mass ratio of 1:10: 0.5 ratio mixed composition, the acid source described in the present embodiment is phosphoric acid, the described gas source is dicyandiamide, and the described carbon source is sorbic acid.

[0031] Polyolefin carrier: 20 parts. In this embodiment, the polyolefin carrier adopts propylene-based elastomer.

[0032] Silicone oil: 0.2 parts. In this embodiment, the silicone oil is hydroxyl silicone oil.

[0033] Coupling agent: 0.5 parts. In this embodiment, solid titanate coupling agent with a molecular weight greater than 800 is used as the coupling agent. ...

Embodiment 3

[0036] A halogen-free flame-retardant masterbatch, the halogen-free flame-retardant masterbatch is composed of the following raw materials in parts by mass:

[0037] Halogen-free flame retardant: 40 parts. In this embodiment, the halogen-free flame retardant is a phosphorus-nitrogen intumescent flame retardant, and the flame retardant is composed of an acid source, a gas source, and a carbon source in a mass ratio of 1:2: 3 ratio mixing composition, the acid source described in this embodiment is phosphorus pentoxide, the gas source is ammonium polyphosphate, and the carbon source is cellulose.

[0038] Polyolefin carrier: 69.7 parts. In this embodiment, the polyolefin carrier is a mixture of LDPE and propylene-based elastomer, and the mass ratio of the two is 1:1.

[0039] Silicone oil: 0.5 part. In this embodiment, amino silicone oil is used as the silicone oil.

[0040] Coupling agent: 1 part. In this embodiment, a solid titanate coupling agent with a molecular weight grea...

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Abstract

The invention discloses a halogen-free flame-retardant master batch. The halogen-free flame-retardant master batch is composed of the following raw materials in parts by mass: 30-80 parts of halogen-free flame retardant, 15-69.7 parts of polyolefin carrier, 0.2-2 parts of silicone oil, and 0.1-3 parts of coupling agent. During preparation, the raw materials aforementioned are weighed according to a ratio at first, and then the polyolefin carrier, the silicone oil and the coupling agent are added in a high-speed stirring machine and stirred for 3 minutes with a medium-low speed, and finally, the halogen-free flame retardant is added and stirred for 5 minutes with a high speed; and the stirred raw materials are transferred into a two-stage vacuum double-screw extruder, and granulated via extrusion, wherein the temperature of the extruder is set to be 100-130 DEG C. The halogen-free flame-retardant master batch disclosed by the invention is excellent in mechanical property, good in water resistance, excellent in physical and mechanical properties, and easy to process and store.

Description

(1) Technical field [0001] The invention relates to a halogen-free flame-retardant masterbatch. (2) Background technology [0002] In order to improve the safety of use and enable PP to be used in a wider range of fields, a lot of research and development work has been done on the flame retardancy of polypropylene at home and abroad. The development of flame retardant PP is mainly to add flame retardants to PP to make PP have Flame retardant effect. Traditional flame retardants are halogen flame retardants, but halogen flame retardants will emit black smoke when burning, and produce toxic substances such as dioxins, which seriously threaten the natural environment and human health. At present, the European Union has banned the use of such Substance products enter the country, so halogenated flame retardants are gradually being replaced by new environmentally friendly flame retardants. [0003] Chemical phosphorus intumescent flame retardants generally use P, N and C as the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/04C08L23/10C08L61/22C08L1/02C08K9/06C08K9/04C08K3/32C08K3/38C08K5/3492C08K5/315C08K5/053B29B7/28
Inventor 韩琛
Owner 宁波一彬电子科技股份有限公司
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