Flame-retardant PVC cable tube and preparation method thereof
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A cable tube and flame retardant masterbatch technology, which is applied in the direction of fiber type, textile and papermaking, fiber processing, etc., can solve the problems of high brittleness, easy corrosion of PVC pipes, poor impact resistance of PVC pipes, etc. The effect of improving low temperature impact resistance, good insulation and strong corrosion resistance
Inactive Publication Date: 2019-09-10
深圳市深捷通管业发展有限公司
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[0005] Although the existing hard polyvinyl chloride pipe has good flame retardancy, when it is laid underground in Yanhai City, because the soil in Yanhai City has a large salt content, it is easy to corrode the surface of the PVC pipe, and The impact resistance of polyvinyl chloride pipes is poor and brittle. Therefore, it is a problem to be solved to develop a PVC cable pipe with good flame retardancy and corrosion resistance and high impact strength.
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preparation example 1-3
[0034] The aramid fibers in Preparation Examples 1-3 are selected from the aramid fibers sold by Dongguan Kaitlun New Material Co., Ltd. with the product number T-78000.
preparation example 1
[0035] Preparation example 1: (1) add distilled water to the mixture of 0.6g tris and 0.7g hydrochloric acid, make the pH be 8.5;
[0036] (2) Immerse 3g of aramid fiber in 5mL of ethanol solution with a concentration of 20mg / mL for 20min, wash with distilled water prepared in step (1) and dry, place the dried aramid fiber in 5mL of ethanol solution with a concentration of 0.5mg / mL Soak in the dopamine alkaline aqueous solution for 3 minutes, take it out and react for 2 minutes in a hot air stream at 60°C.
preparation example 2
[0037] Preparation example 2: (1) add distilled water to the mixture of 0.65g Tris and 0.75g hydrochloric acid, make the pH be 8.5;
[0038] (2) Immerse 4g of aramid fiber in 8mL of ethanol solution with a concentration of 20mg / mL for 25min, wash and dry with the distilled water prepared in step (1), and place the dried aramid fiber in 6mL of ethanol solution with a concentration of 0.5mg / mL Soak in dopamine alkaline aqueous solution for 4 minutes, take it out and react for 2.5 minutes in a hot air stream at 70°C.
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Abstract
The invention discloses a flame-retardant PVC cable tube and a preparation method thereof. The flame retardant PVC cable tube comprises the following components: polyvinyl chloride resin, phenolic resin, flame retardant masterbatch, a plasticizer, an antioxidant, oxidized polyethylene wax, a filler, a coupling agent, a corrosion resistant filler, a shock resistance modifier and pigment. The corrosion resistant filler includes, by weight, 5-12 parts of modified aramid fibers, 16-20 parts of ceramsite, 3-8 parts of graphene, 15-30 parts of epoxy resin emulsion, 5-10 parts bentonite and 3-6 partsof a ceramic adhesive. The shock resistance modifier includes, by weight, 11-16 parts of polylactic acid, 7-13 parts lignin fiber, 4-8 parts beet pulp, 3-7 parts of soybean meal, 8-14 parts of polyolefin elastomer, 5-10 parts of piperazine pyrophosphate and 20-30 parts of polystyrene resin. The flame-retardant PVC cable tube has the advantages of good flame retardancy, high corrosion resistance and strong impact resistance.
Description
technical field [0001] The invention relates to the technical field of rigid PVC pipes, more specifically, it relates to a flame-retardant PVC cable pipe and a preparation method thereof. Background technique [0002] In modern society, power cables play an important role in our country's national economy, but now in order to save space and avoid accidents, power cables are often buried underground, because the buried power cables have reliable working stability , It is not easy to be disturbed by external forces to cause open circuit and other phenomena, so it is more and more popular among people. [0003] PVC raw materials have a wide range of sources and low prices. It is one of the most used plastics in the world. It has a wide range of application markets in China and the world. It is the first in China and the second in the world. One of the first industrially produced synthetic resins. Polyvinyl chloride has the advantages of excellent mechanical and electrical pro...
Claims
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