Flame-retardant polyethylene material as well as preparation method and application thereof
A technology of flame-retardant polyethylene and decabromodiphenylethane, which is applied in the field of flame-retardant polyethylene materials and their preparation, and can solve the problems that polyethylene materials are difficult to combine with flame-retardant properties, stress-cracking resistance, and high impact strength. , to achieve the effect of easy industrialized mass production, low loss and low production cost
Pending Publication Date: 2021-07-20
GUANGDONG JUSHI CHEM CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that polyethylene materials in the prior art are difficult to have excellent flame retardancy, stress crack resistance and high impact strength, and to provide a flame-retardant polyethylene material and its preparation method and application
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[0064] The preparation method of the flame-retardant polyethylene material of the above-mentioned embodiments 1-5 and comparative examples 1-5 comprises the following steps:
[0065] 1) Weigh the PE resin, decabromodiphenylethane, antimony trioxide, antioxidant, toughening agent and lubricant according to the proportion and mix them evenly in the stirring pot, and set the time to 2 minutes;
[0066] 2) The material in step 1) is kneaded and extruded in a twin-screw extruder, drawn, pelletized, and screened to obtain a flame-retardant polyethylene material.
[0067] In step 2), the mixing extrusion temperature of Example 1, Example 2, Example 4 and Comparative Example 1 and Comparative Example 2 is 100 to 170°C, and the mixing and extrusion temperature of Example 3, Example 5 and Comparative Example 3 The extrusion temperature is 120-200°C. The material enters the co-rotating twin-screw extruder through the feeding port for mixing and extrusion. The screw diameter of the co-rot...
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Abstract
The invention provides a flame-retardant polyethylene material as well as a preparation method and application thereof. The flame-retardant polyethylene material comprises the following raw materials in parts by mass: 80 to 95 parts of PE resin; 3 to 7 parts of decabromodiphenyl ethane; 1 to 2.5 parts of antimony trioxide; 0 to 1 part of an antioxidant; 5 to 10 parts of a toughening agent; and 0 to 1 part of a lubricant. The flame-retardant polyethylene material disclosed by the invention is excellent in flame-retardant property, short in delayed combustion time, excellent in mechanical property and good in stress cracking resistance, the flame-retardant grade is UL94V-2, and the flame-retardant polyethylene material does not crack after being soaked in an environmental reagent for more than 14 days; the preparation method is simple, raw materials are sufficient, the production cost is low, industrial large-scale production is easy to carry out, the drainage opening material can be recycled, and the loss is low.
Description
technical field [0001] The invention belongs to the technical field of flame-retardant modified materials, in particular to a flame-retardant polyethylene material and its preparation method and application. Background technique [0002] Polyethylene (PE) has the advantages of odorless, non-toxic, 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, agriculture, construction and packaging and other fields. However, PE is very sensitive to environmental stress. Under the action of stress or environmental medium, stress cracking occurs on the surface. Lu Yunwen et al. ):26-29+40.) It is found that PE will have residual stress or strain during processing, which will lead to brittle cracking of PE, and the surface of the crack is smooth, and the environmental stress cracking resistance of PE decreases with the increase of melt index....
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IPC IPC(8): C08L23/06C08L23/08C08K5/03C08K3/22
CPCC08L23/06C08L2203/20C08L2207/066C08L2207/062C08L2201/02C08L23/0815C08L23/0853C08K5/03C08K3/2279
Inventor 沈旭渠陈锐彬刘鹏辉汪洋蔡智勇林佳武苏杜敏廖华利
Owner GUANGDONG JUSHI CHEM CO LTD