CN105936736A

CN105936736A - Production process of phenol-formaldehyde bakelite powder from straw powder instead of wood powder

Info

Publication number: CN105936736A
Application number: CN201610027790.1A
Authority: CN
Inventors: 吴春喜; 苏炳森; 王�华; 陈元水
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-07
Filing date: 2016-01-07
Publication date: 2016-09-14

Abstract

The invention provides a production process of phenol-formaldehyde bakelite powder from straw powder instead of wood powder. The process is as below: resin, a filler, a curing agent, a curing accelerant, a lubricant and a coloring agent are prepared conventionally. The filler uses straws after crops harvest; the straws are crushed into 80 mesh powder to replace part of the routine of wood powder; and the replacement amount is 13-17% of routine wood powder. 28 wt.% of phenolic resin, 49wt.% of wood powder, 8 wt.% of straw powder, 10 wt.% of curing agent, 1 wt.% of curing accelerator, 1 wt.% of lubricant and 3 wt.% of coloring agent are sent into a mixing machine for heating and mixing. The invention uses straw powder to replace part of the wood powder for the production of phenol-formaldehyde bakelite powder; the price of straw powder is nearly half cheaper than the wood powder; because of the good gloss, the straw powder has good adhesive properties than ordinary wood powder, and can reduce the usage amount of resin; the resin consumption per ton of product is about 25 kg less than the usage of all wood powder, so as to save the cost by 250 yuan per ton. The product has good gloss, better toughness and better quality, and can turn wastes into treasures and solve the problem of air pollution caused by straw burning.

Description

Powder of straw substitutes wood powder and produces bakelite powder craft

Technical field

The present invention relates to raw material and technique that bakelite powder is used aborning, particularly a kind of powder of straw substitutes wood powder and produces bakelite powder craft.

Background technology

Phenols and aldehyde compound are under acidity or base catalyst effect, phenolic resin can be prepared through polycondensation reaction, phenolic resin and filler, firming agent, curing accelerator, lubricant, coloring agent etc. are sufficiently mixed, and in mixing roll, add hot milling, by bakelite powder by compacting, injection, after mould hot briquetting, it is possible to make beckophen goods.Due to this product fine quality, it is widely used in household electrical appliance, Hardware fitting, transportation, family's furniture etc., so bakelite are currently the thermosetting plastics that yield is maximum in the world.Wood powder is the filler that bakelite phenolic moulding powder usage amount is maximum, but owing to timber growth cycle is long, wood powder resource is more and more nervous, needs the material that cost is lower to produce bakelite powder to substitute wood powder.

Summary of the invention

Agricultural crop straw is the renewable biomass resource that a class is important, and in agricultural crop straw, content of cellulose is up to 40-50%, is a kind of well replacement wood powder material, is but paid attention to and develop for a long time.The straw stayed after it is an object of the invention to utilize crops harvest, produces bakelite powder by substituting wood powder after pulverizing.

Powder of straw of the present invention substitutes the technical scheme of wood powder production bakelite powder craft: when producing bakelite powder, it is equipped with resin, filler, firming agent, curing accelerator, lubricant, coloring agent routinely, straw after wherein filler uses crops harvest, powder of straw is broken into 80 mesh powderies, substituting conventional use of wood powder in order to part, replacement amount is the 13-17% of conventional wood powder usage amount.By weight ratio by phenolic resin 28%, wood powder 49%, powder of straw 8%, firming agent 10%, curing accelerator 1%, lubricant 1%, the raw material of coloring agent 3% send and carries out in mixing roll adding hot milling.When adding hot milling, two roller temperatures keep (90 ± 2) DEG C, and during heat refining, low temperature roller keeps (90 ± 1) DEG C, and high-temperature roller temperature keeps (170 ± 2) DEG C, and heating mixing time is 40-60 minute.

Present invention powder of straw substitute a part of wood powder produce bakelite powder have powder of straw price than wood powder cheap nearly half；Owing to powder of straw glossiness is good, better than common wood powder with resin-bonding performance, resin demand can be reduced, final resin amount ratio per ton all uses wood powder can lack about 25 kilograms, per ton saves 250 yuan of costs, and product glossiness and toughness are more preferable, and quality is more excellent；Can turn waste into wealth, solve crop straw burning to advantages such as atmosphere polluting problems.

Below in conjunction with embodiment, the invention will be further described

Detailed description of the invention

Powder of straw being broken into 80 mesh powderies, substitutes conventional use of wood powder in order to part, replacement amount is the 13-17% of conventional wood powder usage amount.By weight ratio by phenolic resin 28%, wood powder 49%, powder of straw 8%, firming agent 10%, curing accelerator 1%, lubricant 1%, the raw material of coloring agent 3% send and carries out in mixing roll adding hot milling.When adding hot milling, two roller temperatures keep (90 ± 2) DEG C, and during heat refining, low temperature roller keeps (90 ± 1) DEG C, and high-temperature roller temperature keeps (170 ± 2) DEG C, and heating mixing time is 40-60 minute.

Claims

1. powder of straw substitutes wood powder and produces a bakelite powder craft, it is characterized in that powder of straw is broken into 80 mesh powderies, substitutes conventional use of wood powder in order to part, and replacement amount is the 13-17% of conventional wood powder usage amount.