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Incombustion composite plastic and preparation process thereof

A composite plastic and manufacturing method technology, applied in the field of modified plastics, can solve the problems of easy aging, non-compliance with comprehensive requirements, thermal stability, fluidity, light resistance and poor compressive strength.

Inactive Publication Date: 2005-03-23
王志勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since PVC is a general-purpose plastic, although the cost is low and it is difficult to burn, its thermal stability, fluidity, light resistance and pressure strength are poor, the smoke volume is large, and it is easy to age. It does not meet the steel pipes of the central air-conditioning system project. Comprehensive requirements for construction, so it cannot be used without modification; PTFE has high heat resistance, high compressive strength, and aging resistance, which meets the construction requirements, but its high manufacturing cost also affects its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0017] Embodiment 1 Preparation of flame retardant composite plastics for hard pipes with a pipe diameter of DN20-40

[0018] According to the actual flame retardant requirements and various performance indicators, considering the main performance of the raw materials used, the scope of application and the effective play of their synergistic effects and the processing method of the mixed ingredients, each component is optimized and weighed according to the formula quantity : base material PVC SG5 100 parts, 20 parts of filler light calcium carbonate, 30 parts of superfine asbestos powder (seventh grade), 5 parts of impact modifier CPE, 4 parts of processing modifier ACR, 0.8 parts of surface treatment agent stearic acid, thermal stability 5 parts of triple salt, 0.6 parts of calcium stearate, 0.6 parts of lead stearate, 4 parts of light stabilizer titanium dioxide, 0.2 parts of internal lubricant liquid paraffin, 0.6 parts of external lubricant solid paraffin, smoke suppressa...

Embodiment approach 2

[0019] Embodiment 2 Preparation of flame retardant composite plastics for hard pipes with a pipe diameter of DN50-100

[0020] According to the flame retardant requirements of actual use, considering the main properties of the raw materials used, the scope of application and the effective play of their synergistic effects and the processing method of the mixed ingredients, each component is optimized and weighed according to the formula quantity: base material PVC SG5100 parts, 14 parts of filler light calcium carbonate, 24 parts of superfine asbestos powder (seventh grade), 8 parts of impact modifier CPE, 7 parts of processing modifier ACR, 0.6 part of surface treatment agent stearic acid, heat 7 parts of stabilizer triple salt, 1.2 parts of calcium stearate, 1.2 parts of lead stearate, 5 parts of light stabilizer titanium dioxide, 1 part of antioxidant 2,6-tert-butyl-4--methyl powder, internal lubrication 0.6 parts of liquid paraffin wax, 1.2 parts of solid paraffin wax as a...

Embodiment approach 3

[0021] Embodiment 3 Preparation of flame retardant composite plastics for rigid pipes with a pipe diameter of DN20-100

[0022] According to the flame retardant requirements actually used, taking into account the main properties of the raw materials used, the scope of application and the effective play of their synergistic effects and the processing method of the mixed ingredients, weighed according to the formula: base material PVC SG5 100 parts, 18 parts of filler light calcium carbonate, 13 parts of superfine asbestos powder (seventh grade), 12 parts of impact modifier CPE, 3 parts of processing modifier ACR, 0.4 part of surface treatment agent stearic acid, thermal stability 10 parts of three salts of agent, 0.6 parts of calcium stearate, 0.6 parts of lead stearate, 3 parts of light stabilizer titanium dioxide, 0.4 parts of antioxidant 2,6-tert-butyl-4-methyl powder, internal lubricant liquid 0.3 parts of paraffin wax, 1 part of coupling agent magnesium stearate, 0.8 parts...

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PUM

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Abstract

The invention is a fire-retardant composite plastic and making method, which comprising basal material PVC, fillings light CaCO3, ultrafine asbestos powder, antishock modifier CPE, processing modifier ACR, surface processing agent stearic acid, heat stabilizers tribasic calcium stearate, and lead stearate, photostabilizer titanium pigment, and permanent flame retardant tri(2,3-dichloropropyl) phosphate, proportionally, adding them in a hot-mix kneading machine for mechanically commixing modification, then discharging them into a cold mixer to cool to normal temperature, and obtaining the product. It has the advantages of reasonable mixing of raw materials, and simple and convenient preparing process.

Description

technical field [0001] The invention relates to a modified plastic specially used for construction materials in construction projects, in particular to a flame-retardant composite plastic used for making heat-insulating pads (supports) in central air-conditioning system engineering and a manufacturing method thereof. It is also suitable for making other plastic parts with flame retardant performance requirements. Background technique [0002] At present, in order to meet the steel pipeline construction requirements of central air-conditioning system engineering in various construction projects, according to the national standard GB50243-2002 "Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering", the installation of steel pipelines should meet the following requirements , that is, between the cold and hot water pipes of the air conditioner and the air pipes and the brackets and hangers, there should be heat insulating pads or heat insul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/00C08J3/20C08K5/521C08L27/06
Inventor 王志勇
Owner 王志勇
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