CN103865204B - A kind of preparation method of polychloroethylene pipes - Google Patents

Abstract

The invention discloses a kind of preparation method of polychloroethylene pipes, rotating speed raw materials all except titanium dioxide, CPE being poured into stirring tank 55-70 rev/min stirs mixed 1 hour, after put into twin screw extruder, mediate 8-10 minute at 140-150 DEG C after, add all the other raw materials by weight again, mixing, granulation, control temperature, at 150-160 DEG C, obtains finished product after moulding process; Gained pipe workpiece quality of the present invention is stablized, and smooth in appearance, intensity is good.Preparation technology of the present invention is energy-conservation, economy, environmental protection.

Description

A kind of preparation method of polychloroethylene pipes

Technical field

The present invention relates to field of polyvinyl chloride material, is exactly a kind of preparation method of polychloroethylene pipes.

Background technology

Batch mixing in the production of PVC, will by cold mixing and heat mixing two techniques, at hot mix stages, as in raw material, water content is inconsistent, temperature during mixing will change thereupon, and Yin Wendu is too high and impel inside and outside lubricant breakdown, the practical effect of auxiliary material cannot accomplish the end in view, and 600 kilograms of raw materials can only be processed by twice mixing at every turn, labour intensity is comparatively large, and power consumption is higher.

Summary of the invention

The object of the present invention is to provide a kind of preparation method of polychloroethylene pipes.

Above-mentioned purpose is realized by following scheme:

A preparation method for polychloroethylene pipes, is characterized in that:

Comprise the following steps:

(1) each raw material is taken by the weight part of following constitutive material:

(2) rotating speed raw materials all except titanium dioxide, CPE being poured into stirring tank 55-70 rev/min is uniformly mixed 1 hour, after put into twin screw extruder, mediate 8-10 minute at 140-150 DEG C after, add all the other raw materials by weight again, mixing, granulation, control temperature, at 150-160 DEG C, obtains finished product after moulding process;

The preparation method of described modification bortz powder is: 10-20 part bortz powder is calcined 4-5 hour at 500-550 DEG C, add 10-20 part attapulgite, 3-4 part iron powder, 1-2 part trioctyl trimellitate, 0.3-0.5 part glycerine, 0.3-0.5 part dimethyl silicone oil stir after 10-20 minute and take out at 30-40 DEG C, add in the lump in suitable quantity of water with 1-2 part aluminium hydroxide and grind evenly, add 1-2 part antioxidant 1076,0.1-0.2 part Graphene, stir, spraying dry, obtain powder, to obtain final product.

The preparation method of described a kind of polychloroethylene pipes, is characterized in that: the mixing temperature of step (2) is below 38 DEG C.

Beneficial effect of the present invention is: gained pipe workpiece quality of the present invention is stablized, and smooth in appearance, intensity is good.Preparation technology of the present invention is energy-conservation, economy, environmental protection.

Embodiment

A preparation method for polychloroethylene pipes, comprises following

Step:

(1) each raw material is taken by the weight g of following constitutive material:

(2) raw materials all except titanium dioxide, CPE are poured into stirring tank less than the 38 DEG C rotating speed of 55 revs/min and be uniformly mixed 1 hour, after put into twin screw extruder, mediate after 10 minutes at 150 DEG C, mixing, granulation, control temperature, at 160 DEG C, obtains finished product after moulding process;

The preparation method of described modification bortz powder is: calcined 5 hours at 550 DEG C by 10g bortz powder, add 20g attapulgite, 4g iron powder, 2g trioctyl trimellitate, 0.5g glycerine, 0.5g dimethyl silicone oil at 40 DEG C, stir taking-up after 17 minutes, add in the lump in suitable quantity of water with 2g aluminium hydroxide and grind evenly, add 2g antioxidant 1076,0.2g Graphene, stir, spraying dry, obtains powder, to obtain final product.

The performance data of plastic pipe of the present invention compares:

Claims (2)

1. a preparation method for polychloroethylene pipes, is characterized in that:

Comprise the following steps:

(1) each raw material is taken by the weight part of following constitutive material:

Polyvinyl chloride resin 70-80

Calcium hydrogen carbonate 70-80

Paraffin: 0.5-0.7

Titanium dioxide: 1.4-1.6

Stearic acid: 0.4-0.5

CPE：4-6

Calcium-zinc composite stabilizing agent 3-4

Modification bortz powder 3-5;

(2) rotating speed raw materials all except titanium dioxide, CPE being poured into stirring tank 55-70 rev/min is uniformly mixed 1 hour, after put into twin screw extruder, mediate 8-10 minute at 140-150 DEG C after, add all the other raw materials by weight again, mixing, granulation, control temperature, at 150-160 DEG C, obtains finished product after moulding process;

The preparation method of described modification bortz powder is: 10-20 part bortz powder is calcined 4-5 hour at 500-550 DEG C, add 10-20 part attapulgite, 3-4 part iron powder, 1-2 part trioctyl trimellitate, 0.3-0.5 part glycerine, 0.3-0.5 part dimethyl silicone oil stir after 10-20 minute and take out at 30-40 DEG C, add in the lump in suitable quantity of water with 1-2 part aluminium hydroxide and grind evenly, add 1-2 part antioxidant 1076,0.1-0.2 part Graphene, stir, spraying dry, obtain powder, to obtain final product.

2. the preparation method of a kind of polychloroethylene pipes according to claim 1, is characterized in that: the mixing temperature of step (2) is below 38 DEG C.