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A kind of wood-plastic special pvc resin and its preparation method and application

A PVC resin and wood-plastic technology, applied in the field of polymer materials, can solve problems such as lag, development, and low filling ratio of straw powder, and achieve the effect of improving uniformity

Active Publication Date: 2019-05-07
泰州思睿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, my country's PVC wood-plastic development technology lags behind, the filling ratio of straw powder is very low, and the mechanical properties and hydrophobic, anti-corrosion and weather resistance are very poor. The main reason is that there is no special functional PVC resin developed for the specific situation of PVC wood-plastic.

Method used

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  • A kind of wood-plastic special pvc resin and its preparation method and application
  • A kind of wood-plastic special pvc resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Press 10 tons of vinyl chloride into 30m 3 Polymerization reactor, then add in order: initiator di-isooctyl peroxydicarbonate, cumyl peroxyneodecanoate 3.5kg each, ammonium bicarbonate 5kg, GH20 dispersant 4kg, KH20 dispersant 3kg, span60 granulate 3kg; then pump 15 tons of isothermal pure water at 70°C at a stirring speed of 90rpm, and start pumping a mixture of 1 ton of isooctyl acrylate and 0.7 tons of methyl methacrylate when the reaction temperature rises to 57°C for 150 minutes It is advisable to pump evenly. After the pumping is completed, the pressure of the polymerization tank is 0.87MPa, and after another 90 minutes, the pressure begins to drop. After the pressure drop exceeds 0.15MPa, 3kg of terminator ATSC and 3kg of antioxidant 1010 are pumped in, and the material is discharged, air-lifted, and centrifuged. Milky white translucent polymer powder was obtained after fluidized bed drying.

Embodiment 2

[0034] Press 10 tons of vinyl chloride into 30m 3 Polymerization reactor, then add in sequence: initiator tert-butyl peroxyneodecanoate, 4kg each of dibenzoyl peroxide, ammonium bicarbonate 5kg, GH20 dispersant 2.8kg, KH20 dispersant 3.2kg, span80 granulator 3kg . Then pump 15 tons of isothermal pure water at 95°C at a stirring speed of 90 rpm, and start pumping in a mixture of 1 ton of isooctyl acrylate and 0.7 tons of vinyltrimethoxysilane when the reaction temperature rises to 68.5°C. It is advisable to enter. After pumping, the pressure of the polymerizer was 1.2MPa, and after another 90 minutes, the pressure began to drop. After the pressure drop exceeded 0.25MPa, 3kg of terminator methylstyrene and 3kg of antioxidant 1076 were pumped in, and the material was discharged, stripped, and passed through Milky white translucent polymer powder was obtained after centrifugal dehydration~fluidized bed drying.

Embodiment 3

[0036] Press 10 tons of vinyl chloride into 30m 3Polymerization reactor, then add in order: initiator di-isooctyl peroxydicarbonate, cumyl peroxyneodecanoate 3.8kg each, ammonium bicarbonate 5kg, GH20 dispersant 3.3kg, KH20 dispersant 4.5kg, span60 Whole granule 3kg. Then pump 15 tons of isothermal pure water at 65°C at a stirring speed of 90 rpm, and start pumping in a mixture of 1 ton of isooctyl acrylate and 0.7 tons of methyl methacrylate when the reaction temperature rises to 48.5°C, and pump it in evenly for 240 minutes It is appropriate. After the pumping is completed, the pressure of the polymerization kettle is 0.72MPa, and after another 90 minutes, the pressure begins to drop. After the pressure drop exceeds 0.20MPa, 3kg of terminator hydroquinone and 3kg of antioxidant CA are pumped in, the material is discharged, and the gas is stripped. Milky white translucent polymer powder was obtained after centrifugal dehydration~fluidized bed drying.

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Abstract

The invention relates to a wood-plastic special PVC resin with high mechanical properties, high hydrophobicity and high dimensional stability, a preparation method and application thereof, and belongs to the field of polymer materials. The invention provides a special PVC resin for wood-plastic. The raw materials and weight proportions of the special PVC resin for wood-plastic include: 100 parts by weight of vinyl chloride monomer, 0-20 parts by weight of functional monomer A, and 0-20 parts by weight of functional monomer B. 0 to 20 parts by weight, 0.06 to 0.1 parts by weight of an initiator, 0.05 to 0.1 parts by weight of a buffer, 0.06 to 0.20 parts by weight of a dispersant, 0.02 to 0.04 parts by weight of a sizing agent, and 150 to 200 parts by weight of pure water; The functional monomer A is selected from at least one of the following monomers: methyl methacrylate, butyl methacrylate or isooctyl acrylate, and the functional monomer B is selected from the following polymers At least one: dicyclopentadiene, maleic acid, vinyltrimethoxysilane, butyl acrylate or hydroxyethyl acrylate; the addition amount of functional monomer A and functional monomer B cannot be 0 at the same time.

Description

technical field [0001] The invention relates to a wood-plastic special PVC resin with high mechanical properties, high hydrophobicity and high dimensional stability, a preparation method and application thereof, and belongs to the field of polymer materials. Background technique [0002] Wood-plastic, that is, wood-plastic composite material, is a new type of composite material that has emerged in recent years. Thermoplastic polymers such as PE, PP, PVC, etc. are usually used instead of adhesives, and 35-80 phr of wood powder, rice husk, Straw and other plant fiber powders are blended and processed by extrusion, molding, injection molding, etc. to produce finished products such as plates and profiles. Mainly used in environmental protection building materials, furniture panels and other fields. Compared with solid wood materials and reinforced urea-formaldehyde resin reinforced composite board materials, this material has higher mechanical properties, stronger hydrophobicit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/06C08F220/18C08F220/14C08F230/08C08L27/06C08L97/02C08L51/04C08L51/06C08L33/04
CPCC08F214/06C08L27/06C08L2201/02C08L2201/08C08L2205/16C08L2205/035C08L97/02C08L51/04C08L51/06C08L33/04C08F220/1808C08F220/14C08F230/08C08F220/1804
Inventor 黄传华蔡辉石亮常广涛
Owner 泰州思睿新材料科技有限公司