Halogen-free flame-retardant low-density polyethylene material, and preparation method and application thereof

A low-density polyethylene and flame retardant technology, applied in the field of flame retardant materials, can solve the problems of inability to meet the needs of the simulation decoration industry and the application of the inner film of the plug, and achieve the effects of low cost, good simulation effect and good resilience.

Pending Publication Date: 2020-01-31
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the existing polyethylene materials cannot meet the needs of the simulated decoration industry and the applicat

Method used

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  • Halogen-free flame-retardant low-density polyethylene material, and preparation method and application thereof
  • Halogen-free flame-retardant low-density polyethylene material, and preparation method and application thereof
  • Halogen-free flame-retardant low-density polyethylene material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] This example provides a halogen-free flame-retardant low-density polyethylene material, including the following raw materials in parts by weight:

[0065] LDPE: 80-95 parts, halogen-free compound flame retardant: 5-15 parts, antioxidant: 0.2-0.8 parts, lubricant: 0.3-0.7 parts.

[0066] Among the above-mentioned halogen-free flame-retardant low-density polyethylene materials, the preferred mass parts of LDPE are 88-93 parts. The preferred mass parts of the halogen-free compound flame retardant is 6-9 parts. The preferred amount of antioxidant is 0.4 parts. The preferred amount of lubricant is 0.6 parts.

[0067] The flexural modulus of LDPE is 90-120 MPa. The elongation at break of LDPE is greater than 150%. The melt index of LDPE under the test conditions of 190°C and 2.16kg is 20g / 10min~50g / 10min.

[0068] The halogen-free compound flame retardant is a P-N compound flame retardant, and the mass ratio of the P-based flame retardant to the N-based flame retardant i...

Embodiment 2

[0072] This example provides a preparation method for a halogen-free flame-retardant low-density polyethylene material, and the steps include:

[0073] S1: Weigh the LDPE, halogen-free compound flame retardant, antioxidant and lubricant according to the proportion and mix them;

[0074] S2: After kneading by a twin-screw extruder, extrude and granulate to obtain the halogen-free flame-retardant low-density polyethylene material.

[0075] Specifically, the preparation method of the above-mentioned halogen-free flame-retardant low-density polyethylene material, the process is as follows figure 1 As shown, the steps include:

[0076] 1) Feed LDPE into the twin-screw extruder through the 1# loss-in-weight weighing bin from the main feeding port;

[0077] 2) Mix the P-N compound flame retardant according to the proportion and add it to the 2# loss-in-weight weighing chamber, add the antioxidant to the 3# loss-in-weight weighing chamber, and add the lubricant to the 4# loss-in-wei...

Embodiment 3

[0086] This example provides the application of the halogen-free flame-retardant low-density polyethylene material or the halogen-free flame-retardant low-density polyethylene material prepared by the above-mentioned preparation method in simulated decorations and / or plug inner films.

[0087] In applications, simulated decorations include but are not limited to simulated green lawns, simulated Christmas trees, simulated branches and other seasonal simulated products.

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Abstract

The embodiment of the invention provides a halogen-free flame-retardant low-density polyethylene material, and a preparation method and an application thereof. According to the halogen-free flame-retardant low-density polyethylene material, the flame retardant grade reaches the UL94 V-2 grade; no corrosive gas is generated during combustion; the self-extinguishing property is good, the elongationat break reaches up to 175%, the impact strength reaches 411 J/m, a product is good in flexibility and has no pricking on hands due to touch, favorable resilience, recyclability, environment friendliness and no halogen, and the problem that a conventional polyethylene material cannot satisfy the simulation decoration industry and plug inner film application requirements in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant materials, and in particular relates to a halogen-free flame-retardant low-density polyethylene material, a preparation method and an application. Background technique [0002] Polyethylene (PE) has the characteristics of odorless and non-toxic, and also has excellent low temperature resistance, good chemical stability, resistance to most acids and alkalis, low water absorption, and excellent electrical insulation. It is widely used in chemical industry and agriculture. , construction and packaging. [0003] The demand for polyethylene in the artificial PE decoration industry is increasing, and the requirements are becoming more and more stringent. Many products not only need to meet the requirements of indoor use, but also need to meet the requirements of outdoor use. Good weather resistance, non-fading, stable flame retardant performance, halogen-free and environmentally friendly polyet...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/02C08K3/32C08K5/3492C08K5/13C08K5/524B29B9/06
CPCB29B9/06C08K3/32C08K5/13C08K5/34922C08K5/34928C08K5/524C08K13/02C08K2003/323C08L2201/02C08L2201/22C08L2207/066C08L23/06
Inventor 沈旭渠陈锐彬刘鹏辉熊金标贾似海刘俊汪洋
Owner GUANGDONG JUSHI CHEM CO LTD
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