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Damp-proof PVC injection moulding material

A technology of injection molding and PVC resin, which is applied in the field of cable injection molding, which can solve the problems of moisture, dull and rough surface of wires, reduction of mechanical properties and insulation performance of wires, etc., and achieve the effect of good softness and smooth and delicate surface of products

Inactive Publication Date: 2018-01-05
ZHEJIANG WELLSCOM PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] PVC cable material is easy to get damp. The surface of the wire made of damp cable material is dull, rough and dull. There are many honeycomb pores on the surface and cross-section of the wire, which greatly reduces the mechanical properties and insulation properties of the wire.
Before using the damp cable material, it needs to be dried, which adds a process, which not only affects the production speed, but also wastes manpower and energy
Conventional PVC insulating materials are usually filled with ordinary calcium carbonate. The surface of insulating cable particles made of ordinary calcium carbonate looks uneven and has pinhole-like gaps under a microscope. These gaps are very easy to absorb water vapor, which leads to moisture.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A moisture-proof PVC injection molding material, made from the following raw materials in parts by weight:

[0026] 80 parts of PVC resin, 20 parts of PE resin, 120 parts of inorganic filler, 25 parts of composite rubber, 2 parts of fluidity modifier, 10 parts of plasticizer, 5 parts of lubricant, and 6 parts of heat stabilizer; the composite rubber contains the following weight Percentage of components, nitrile rubber 35wt%, EPDM rubber 10wt%, silicone rubber 10%, neoprene 45wt%; plasticizer is composed of dioctyl terephthalate and dioctyl phthalate Composition by weight ratio 1:0.5; lubricant is stearic acid; fluidity modifier is talcum powder; film forming agent is oxidized polyvinyl alcohol;

[0027] The inorganic filler wherein is modified muscovite, and modified muscovite is made by following method:

[0028] Muscovite is mixed with absolute ethanol with 0.3 times the weight of muscovite and PVA with 0.1 times the weight of muscovite and added to a high-speed she...

Embodiment 2

[0030] A moisture-proof PVC injection molding material, made from the following raw materials in parts by weight:

[0031] 82 parts of PVC resin, 25 parts of PE resin, 125 parts of inorganic filler, 257 parts of composite rubber, 2.2 parts of fluidity modifier, 10.5 parts of plasticizer, 5.5 parts of lubricant, and 6.5 parts of heat stabilizer; the composite rubber contains the following weight Percentage of components, nitrile rubber 37wt%, EPDM rubber 13wt%, silicone rubber 11%, neoprene 39wt%; plasticizer is composed of dioctyl terephthalate and dioctyl phthalate Composition by weight ratio 1:0.6; lubricant is stearic acid; fluidity modifier is talcum powder; film forming agent is oxidized polyvinyl alcohol;

[0032] The inorganic filler wherein is modified muscovite, and modified muscovite is made by following method:

[0033] Mix muscovite with 0.4 times the weight of muscovite absolute ethanol and 0.13 times the weight of muscovite PVA and add them together to a high-sp...

Embodiment 3

[0035] A moisture-proof PVC injection molding material, made from the following raw materials in parts by weight:

[0036] 85 parts of PVC resin, 30 parts of PE resin, 130 parts of inorganic filler, 27.5 parts of composite rubber, 2.5 parts of fluidity modifier, 11 parts of plasticizer, 6 parts of lubricant, and 7 parts of heat stabilizer; the composite rubber contains the following weight Percentage of components, nitrile rubber 37.5wt%, EPDM rubber 15wt%, silicone rubber 12.5%, neoprene 35wt%; plasticizer is composed of dioctyl terephthalate and dioctyl phthalate The ester is composed of a weight ratio of 1:0.65; the lubricant is zinc stearate; the fluidity modifier is talc; the film forming agent is oxidized polyvinyl alcohol;

[0037] The inorganic filler wherein is modified muscovite, and modified muscovite is made by following method:

[0038] Muscovite is mixed with absolute ethanol with 0.5 times the weight of muscovite and PVA with 0.15 times the weight of muscovite ...

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Abstract

The invention belongs to the technical field of cable injection moulding materials and discloses a damp-proof PVC injection moulding material. The damp-proof PVC injection moulding material is prepared from the raw materials including PVC resin, PE resin, inorganic filler, composite rubber, a fluidity modifier, plasticizers, a lubricant, a heat stabilizer and the like, wherein the inorganic filleris modified white mica; the composite rubber includes nitrile butadiene rubber, ethylene-propylene-diene monomer, silicone rubber and chloroprene rubber; the plasticizers are dioctyl terephthalate and dioctyl phthalate. The damp-proof PVC injection moulding material disclosed by the invention has moisture-proof and damp-proof characteristics as well as the characteristics of smooth and delicate product surface, relatively high softness and the like.

Description

technical field [0001] The invention relates to the technical field of cable injection molding, in particular to a moisture-proof PVC injection molding. Background technique [0002] PVC cable material is easy to get damp. The surface of the wire made of damp cable material is dull and rough. There are many honeycomb pores on the surface and cross-section of the wire, which greatly reduces the mechanical properties and insulation properties of the wire. Before using the damp cable material, it needs to be dried, which adds a process, which not only affects the production speed, but also wastes manpower and energy. Conventional PVC insulating materials are usually filled with ordinary calcium carbonate. The surface of insulating cable particles made of ordinary calcium carbonate looks uneven and has pinhole-like gaps under a microscope. These gaps are very easy to absorb water vapor, which leads to moisture. Contents of the invention [0003] In order to solve the above pr...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/06C08L9/02C08L23/16C08L83/04C08L11/00C08K13/06C08K9/00C08K9/04C08K3/34C08K5/12
Inventor 李晓东余立峰赵亚琼
Owner ZHEJIANG WELLSCOM PLASTIC CO LTD
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