Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of pvc micro-foaming profile, raw material and its preparation method and application

A micro-foaming and profile technology, which is applied in construction, building structure, covering/lining, etc., can solve the problem of poor tensile strength and flexural strength of PVC micro-foaming profiles, poor compatibility of PVC micro-foaming composites, etc. problem, to achieve the effect of smooth surface, uniform internal cell size and low density

Active Publication Date: 2022-05-24
SHANGHAI CHANGFA NEW MATERIAL CO LTD
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of pvc micro-foaming profile, raw material and its preparation method and application
  • A kind of pvc micro-foaming profile, raw material and its preparation method and application
  • A kind of pvc micro-foaming profile, raw material and its preparation method and application

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 in the pulping process by using the caustic soda method, and the caustic soda method is specifically to use a caustic soda solution to cook poplar wood, the cooking temperature is 160-180 ° C, and the cooking time is 3h.

[0076] A certain amount of papermaking black liquor obtained by the above-mentioned caustic soda method was added with sulfuric acid to adjust the pH of the system to 3, and then dried and screened to obtain papermaking waste; Mixing in the machine to obtain modified papermaking waste; wherein, the particle size of the material after screening treatment is 200 mesh; the mass ratio of papermaking waste and stearic acid is 100:5, and the mass ratio of papermaking waste and cyclodextrin is 100:5. The ratio was 100:0.5; the mixing temperature in the internal mixer was 160° C., the mixing time was 120 min,...

Embodiment 2

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

[0084] In this embodiment, the papermaking black liquor is the papermaking black liquor produced in the pulping process by using the kraft method, and the kraft method is specifically the use of kraft pulp to cook poplar, the cooking temperature is 160-180 ° C, and the cooking time is 3h.

[0085] Add sulfuric acid to a certain amount of papermaking black liquor prepared by the above sulfate method to adjust the pH of the system to 3, and then carry out drying and screening treatment to obtain papermaking waste; papermaking waste, stearoyl chloride and pyridine are mixed in an internal mixer. Internal mixing to obtain modified papermaking waste; wherein, the particle size of the material after sieving treatment is 200 mesh; the mass ratio of papermaking waste to stearoyl chloride is 100:10, and the mass ratio of papermaking waste to pyridine is 100 : 1; the mixing temperature in the internal mixer is 160°C, the mi...

Embodiment 3

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

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

[0094] A certain amount of papermaking black liquor prepared by the above-mentioned sulfite method was added with sulfuric acid to adjust the pH of the system to 3, and then dried and screened to obtain papermaking waste; papermaking waste, benzoyl chloride and pyridine were mixed in banbury Mixing in the machine to obtain modified papermaking waste; wherein, the particle size of the material after screening treatment 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 was 160° ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention discloses a PVC micro-foaming profile, a raw material, a preparation method and an application thereof. The raw material composition of the PVC micro-foaming profile includes: 1-20 parts of modified papermaking waste, 20-80 parts of PVC resin, 20-80 parts of inorganic minerals, 1-15 parts of impact modifier, 1-5 parts Parts of plasticizer, 1-8 parts of blowing agent, 2-20 parts of polyvinyl chloride foam regulator and 1-8 parts of PVC stabilizer; the raw material composition of modified papermaking waste includes: 100 parts of papermaking waste, 1 to 50 parts of modifier and 0.1 to 5 parts of phase transfer agent; wherein, the modifier is one or more of stearyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chloride and trichloroacetyl chloride kind. In the invention, the modified papermaking waste is used as the raw material for the PVC micro-foaming profile, which reduces the cost; the prepared PVC micro-foaming profile has smooth surface, uniform internal cell size, low density, and improved tensile strength and bending strength.

Description

technical field [0001] The invention specifically relates to a PVC micro-foaming profile, a raw material and a preparation method and application thereof. Background technique [0002] PVC micro-foaming profile, that is, polyvinyl chloride micro-foaming profile, is a micro-foaming wood-plastic composite material 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, which can prevent crack propagation, thereby effectively overcoming the shortcomings of wood-plastic composite material brittleness and low impact stress, 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 in the PVC-based micro-foaming profile is high, the compatibility between PVC and wood powder is relatively poor, which leads to mechanical proper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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