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PVC micro-foaming profile, raw material, preparation method and application of the PVC micro-foaming profile

A micro-foaming and profile technology, applied in covering/lining, building structure, construction, etc., can solve the problem of poor compatibility of PVC micro-foamed composites, poor tensile strength and flexural strength of PVC micro-foamed profiles, etc. question

Active Publication Date: 2020-06-12
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new method to overcome the defects of poor compatibility of PVC micro-foaming composite materials and poor tensile strength and bending strength of PVC micro-foaming profiles in the prior art. PVC microfoam profile, raw material and its preparation method and application

Method used

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  • PVC micro-foaming profile, raw material, preparation method and application of the PVC micro-foaming profile
  • PVC micro-foaming profile, raw material, preparation method and application of the PVC micro-foaming profile
  • PVC micro-foaming profile, raw material, preparation method and application of the PVC micro-foaming profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] (1) Preparation method of modified papermaking waste:

[0075] In this embodiment, the papermaking black liquor is the papermaking black liquor produced during the pulping process by the caustic soda method. The caustic soda method specifically involves cooking poplar wood with a caustic soda solution. The cooking temperature is 160-180° C. and the cooking time is 3 hours.

[0076] Add sulfuric acid to a certain amount of papermaking black liquor prepared by the above-mentioned caustic soda method to adjust the pH of the system to 3, then dry and sieve to obtain papermaking waste; papermaking waste, stearic acid and cyclodextrin are mixed together Mix in the machine to obtain modified papermaking waste; among them, the particle size of the material after screening is 200 mesh; the mass ratio of papermaking waste to stearic acid is 100:5, and the mass ratio of papermaking waste to cyclodextrin The ratio is 100:0.5; the mixing temperature in the internal mixer is 160°C, t...

Embodiment 2

[0083] (1) Preparation method of modified papermaking waste:

[0084] In this example, the papermaking black liquor is the papermaking black liquor produced during the pulping process using the kraft method. The kraft method specifically uses kraft pulp to cook poplar wood. The cooking temperature is 160-180° C., and the cooking time is 3h.

[0085] Add sulfuric acid to a certain amount of paper-making black liquor obtained by the above-mentioned sulfate method to adjust the pH of the system to 3, then dry and sieve to obtain paper-making waste; The modified papermaking waste was obtained by internal mixing; wherein, the particle size of the material after screening treatment was 200 mesh; the mass ratio of papermaking waste to stearyl chloride was 100:10, and the mass ratio of papermaking waste to pyridine was 100 : 1; the mixing temperature in the internal mixer is 160°C, the mixing time is 120min, and the rotating speed is 200rpm.

[0086] (2) Preparation method of PVC mi...

Embodiment 3

[0092] (1) Preparation method of modified papermaking waste:

[0093] In this example, the papermaking black liquor is the papermaking black liquor produced during the pulping process using the sulfite method, and the sulfite method is specifically to use the sulfite cooking liquor to cook poplar, and the cooking temperature is 160-180°C , cooking time is 4h.

[0094] Add sulfuric acid to a certain amount of papermaking black liquor obtained by the above-mentioned sulfite method to adjust the pH of the system to 3, then dry and sieve to obtain papermaking waste; papermaking waste, benzoyl chloride and pyridine are mixed in the mixer Mix in the machine to obtain modified papermaking waste; wherein, the particle size of the material after screening is 200 mesh; the mass ratio of papermaking waste to benzoyl chloride is 100:30, and the mass ratio of papermaking waste to pyridine is 100:3; the mixing temperature in the internal mixer is 160°C, the mixing time is 120min, and the r...

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Abstract

The invention discloses a PVC micro-foaming profile, a raw material and a preparation method and application of the PVC micro-foaming profile. A raw material composition of the PVC micro-foaming profile comprises 1-20 parts of modified papermaking waste, 20-80 parts of PVC resin, 20-80 parts of inorganic minerals, 1-15 parts of an impact modifier, 1-5 parts of a plasticizer, 1-8 parts of a foamingagent, 2-20 parts of a polyvinyl chloride foaming regulator and 1-8 parts of a PVC stabilizer. The raw material composition of the modified papermaking waste comprises 100 parts of papermaking waste,1-50 parts of a modifier and 0.1-5 parts of a phase transfer agent, wherein the modifier is one or more of stearoyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chlorideand trichloroacetyl chloride. According to the PVC micro-foaming profile, the modified papermaking waste is used as a raw material, so that the cost is reduced; the prepared PVC micro-foaming sectional material is smooth in surface, uniform in internal cell size and low in density, and the tensile strength and the bending strength are improved.

Description

technical field [0001] The invention specifically relates to a PVC micro-foaming profile, a raw material, a preparation method and an application thereof. Background technique [0002] PVC micro-foamed profiles, that is, polyvinyl chloride micro-foamed profiles, are micro-foamed wood-plastic composite materials formed by introducing tiny cells into PVC wood-plastic composite materials through gas cores. In addition to the advantages, there is also a good cell structure inside the material that can prevent cracks from extending, thereby effectively overcoming the shortcomings of wood-plastic composites such as high brittleness and low impact stress resistance, and reducing the density of the material. It not only saves raw materials, but also has better sound insulation and heat insulation performance. However, when the amount of wood powder added to the PVC-based micro-foamed profile is high, the compatibility between PVC and wood powder is relatively poor, which leads to t...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/28C08L5/16C08L51/04C08L23/08C08L97/00C08L91/00C08K13/02C08K3/26C08K5/053C08K5/09C08K5/11C08K5/20C08K3/34C08J9/10C08J9/08E04F13/075
CPCC08J9/103C08J9/105C08J9/08C08J9/009C08J9/0061C08J9/0066C08J9/0023C08J9/0028C08J9/0095E04F13/18C08J2203/02C08J2203/04C08J2327/06C08J2423/28C08J2405/16C08J2451/04C08J2423/08C08J2497/00C08J2491/00
Inventor 施晓旦翟艳荣赵吉
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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