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Flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board and production method thereof

A low-foaming and environmentally friendly technology, applied in the field of plastic sheets and their processes, can solve the problems of large influence of the processing technology of flame retardant and smoke suppressant.

Inactive Publication Date: 2018-12-18
POTENTECH GUANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some flame retardants and smoke suppressants have a great impact on PVC processing technology, and proper processing technology must be adjusted to normal production

Method used

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  • Flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board and production method thereof
  • Flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board and production method thereof
  • Flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board and production method thereof

Examples

Experimental program
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preparation example Construction

[0035] The present invention also provides a method for preparing flame-retardant, smoke-suppressing, environment-friendly PVC low-foaming board, which is used to prepare the flame-retardant, smoke-suppressing, environment-friendly PVC low-foaming board, see figure 1 , the preparation method of the flame-retardant smoke-suppressing environment-friendly PVC low-foaming board comprises the following steps:

[0036] Step 1: Weigh zinc borate, ammonium octamolybdate and environmentally friendly non-toxic compounds in PVC, heat stabilizer, lubricant, processing aid, foaming agent, filler, plasticizer and flame retardant by weight of the raw materials. Antimony flame retardant;

[0037] Step 2: put the raw materials weighed in step 1 into a high-speed mixing device, stir at a temperature of 90-120°C for 10-20min, and the stirring speed is 1600-2650r / min;

[0038] Step 3: Put the high-speed mixed raw materials into the low-speed mixing device, weigh magnesium hydroxide and aluminum ...

Embodiment 1

[0044] This embodiment provides a flame-retardant, smoke-suppressing, environmentally friendly PVC low-foaming board, which includes: 100 parts of PVC, 5.6 parts of calcium-zinc stabilizer, 1 part of G60, 1 part of stearic acid, and 1.35 parts of polyethylene wax in parts by weight , 15 parts of methyl methacrylate, 2.5 parts of azodicarbonamide, 18 parts of zinc borate, 45 parts of aluminum hydroxide, 15 parts of magnesium hydroxide, 10 parts of ammonium octamolybdate, 8 parts of environmentally friendly antimony-free flame retardant, 2 parts epoxy soybean oil and 5 parts modified light calcium carbonate.

[0045] After weighing zinc borate, ammonium octamolybdate and environmentally friendly antimony-free flame retardant in PVC, heat stabilizer, lubricant, processing aid, foaming agent, filler, plasticizer and flame retardant Put it into a high-speed mixing device, stir at 120°C for 10 minutes, and the stirring speed is 1980r / min; put the high-speed mixed raw materials into ...

Embodiment 2

[0052] This embodiment provides a flame-retardant, smoke-suppressing, environment-friendly PVC low-foaming board, which includes in parts by weight: 100 parts of PVC, 4 parts of calcium zinc stabilizer, 0.3 part of G60, 0.3 part of stearic acid, 0.4 part of polyethylene wax, 6 parts of methyl methacrylate, 0.6 parts of azodicarbonamide, 8 parts of zinc borate, 30 parts of aluminum hydroxide, 10 parts of magnesium hydroxide, 5 parts of ammonium octamolybdate, 10 parts of environmental protection antimony-free flame retardant, oxidation 0.6 parts of polyethylene wax and 40 parts of modified light calcium carbonate.

[0053] After weighing zinc borate, ammonium octamolybdate and environmentally friendly antimony-free flame retardant in PVC, heat stabilizer, lubricant, processing aid, foaming agent, filler, plasticizer and flame retardant Put it into a high-speed mixing device, stir at 120°C for 10 minutes, and the stirring speed is 1980r / min; put the high-speed mixed raw material...

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Abstract

The invention provides a flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board. The flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board comprises, by weight, 100 parts of PVC, 3-6 parts of a heat stabilizer, 0.5-3.2 parts of a lubricant, 6-15 parts of a processing aid, 0.5-1 part of a foaming agent, 29-120 parts of a flame retardant, 5-50 parts of a filler and 0.4-3 parts of a plasticizer, wherein the flame retardant is a compounded flame retardant, the compounded flame retardant comprises zinc borate, aluminum hydroxide, magnesium hydroxide, ammonium octamolybdate and an environmentally-friendly antimony-free flame retardant, and the filler comprises light calcium carbonate. All the flame retardants have synergistic effectsto achieve the flame retardation and smoke suppression purposes with few materials, and cooperate with the light calcium carbonate used as the filler in order to make the flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board have good flame retardation and smoke suppression effects, good mechanical properties and good environmental protection property. The flame-retardant, smoke-suppressing and environmentally-friendly PVC low foaming board is produced by raw material proportioning, high-speed mixing, low-speed mixing, twin-screw extruder extrusion, mold molding, cooling setting and cutting processing processes.

Description

technical field [0001] The invention relates to a plastic board and a process thereof, in particular to a flame-retardant, smoke-suppressing, environment-friendly PVC low-foaming board and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) itself has a certain flame retardancy, its oxygen index is greater than 42%, and it usually does not burn, but its decomposition temperature is low, the melt strength is low, and the amount of smoke is large. When a fire occurs, the fire spreads rapidly. The combustion process can be divided into two steps: first, hydrogen chloride and dienes containing double bonds are decomposed by combustion at 240-340 °C, and then charcoal combustion occurs at 400-470 °C. After removing hydrogen chloride during the combustion process, PVC generates conjugated double-bond unsaturated hydrocarbons, and then the carbon chain is broken into low-molecular products, free radicals, etc., molecules rearrange and cyclize to for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08L91/06C08L23/30C08K13/06C08K9/06C08K5/09C08K3/38C08K3/22C08K3/26C08J9/10C08J9/08
CPCC08J9/0023C08J9/0061C08J9/0066C08J9/08C08J9/103C08J2203/02C08J2203/04C08J2203/18C08J2327/06C08J2423/06C08J2423/30C08J2491/06C08K5/09C08K13/06C08K2003/2224C08K2003/2227C08K2003/265C08K2003/387
Inventor 麦树芬陆武章涛
Owner POTENTECH GUANGDONG
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