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Thermoset plastics infiltration strengthened powdery plant fiber material and preparation method thereof

A plant fiber material and plant fiber technology, which is applied in the field of modified plant fiber powder and its preparation, can solve the problems that affect the corrosion resistance and moisture resistance of plant fiber powder particles, the mechanical properties of composite materials cannot be obtained, and the plant fiber powder particles are loose. , to achieve the effects of easy promotion and application, excellent anti-corrosion and high affinity

Inactive Publication Date: 2008-09-17
张国栋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only modifies the surface of the plant fiber, and does not infiltrate and strengthen the interior of the plant fiber that has been damaged in performance, so it cannot obtain better mechanical properties of the composite material, especially in the case of high filling content.
[0003] Another example is ZL03130622.5. This method dries the plant fiber powder to reduce its water content to less than 2%, which makes the inside of the plant fiber powder particles loose and easily broken, and also affects the corrosion resistance and corrosion resistance of the plant fiber powder particles. Moisture-proof and other properties

Method used

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  • Thermoset plastics infiltration strengthened powdery plant fiber material and preparation method thereof
  • Thermoset plastics infiltration strengthened powdery plant fiber material and preparation method thereof
  • Thermoset plastics infiltration strengthened powdery plant fiber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The formula of the modified fiber powder material contains the following components: 100 parts of waste wood chips with a water content of 8% are ground into 100 mesh powders, 2 parts of vinyl ester resins and 0.02 parts of the corresponding SG- 1 curing agent, 2 parts of stearic acid and 2 parts of PE wax.

[0029] The preparation method of this material is the following steps:

[0030] A. At room temperature, grind the waste wood chips with a water content of 8% into a powder over 100 meshes, then take 100 parts and put them into a high-speed mixer with a speed of 700 rpm to continuously stir, then Add 2 parts of vinyl ester resin and 0.02 parts of SG-1 curing agent corresponding to vinyl ester resin;

[0031] B. After completing A, heat up to 120°C after 20 minutes, and add 2 parts of stearic acid and 2 parts of PE wax at the same time;

[0032] C. After the completion of B, heat up to 125°C after 9 minutes, and at the same time, stir and cool to room temperature a...

Embodiment 2

[0034] With embodiment 1, the prescription of the modified fiber powder material contains following components: water content is that 2% shavings are ground into 100 parts of 150 mesh powders, 30 parts of epoxy resin and 0.3 part of methyl ethyl ketone peroxide curing agent, 0.4 parts of white oil.

[0035] In the preparation step, the waste sawdust with a water content of 8% in reaction A is ground into a powder over 100 mesh and replaced with shaving wood chips with a water content of 2% and ground into a powder over 150 mesh, and the stirring speed is selected at 1200 rpm; 2 parts of vinyl resin and 0.02 parts of SG-1 curing agent corresponding to vinyl resin, replaced by adding 30 parts of epoxy resin and 0.3 parts of methyl ethyl ketone peroxide curing agent.

[0036] In reaction B, the original 20 minutes was replaced by 60 minutes, the temperature was raised to 80°C, and 0.4 parts of white oil was added as a dispersant and lubricant.

[0037] In reaction C, replace the...

Embodiment 3

[0039] With embodiment 1, the formula of the fiber powder material of modification contains following components: water content is that 5% sawdust is ground into powder of 125 meshes, 12 parts of phenolic resins and 0.15 parts of phenolic resins NL curing agent, the BOP of 1.1 parts and 1.1 parts white oil.

[0040] In the preparation step, the waste sawdust with a water content of 8% in reaction A was ground into a powder over 100 mesh and replaced with sawdust with a water content of 5% and ground into a powder over 125 mesh, and the stirring speed was selected at 950 rpm; the original added 2 12 parts of vinyl resin and 0.02 parts of SG-1 curing agent corresponding to vinyl resin, replaced by adding 12 parts of phenolic resin and 0.15 parts of phenolic resin NL curing agent.

[0041] In reaction B, replace the original 20 minutes with 40 minutes, raise the temperature to 100°C, add 1.1 parts of BOP as a dispersant and 1.1 parts of white oil as a lubricant.

[0042] In reac...

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Abstract

The invention relates to a powdery plant fiber material soaked and intensified by thermosetting plastic, and a preparation method thereof. The powdery plant fiber material is the raw material of a wood and plastic composite material. The plant fiber material disclosed by the invention comprises powdery plant fiber with more than 100 meshes in an amount of 100 parts, the thermosetting plastic in an amount of 2 to 30 parts, a curing agent adapted to the thermosetting plastic in an amount of 0.02 to 0.3 parts, a dispersant in an amount of 0.2 to 2 parts, and a lubricant in an amount of 0.2 to 2 parts. After the broken fiber surface and the interior of the powdery material of the powdery plant fiber are soaked with the thermosetting plastic, the prepared wood and plastic product not only has a high affinity for PVC, but also has better mechanical property compared with the prior wood and plastic product under the condition of equal loading. In addition, the prepared wood and plastic product has excellent anticorrosion property, humidity resistance, and high and low temperature resistance. The production of the powder is easy, convenient, and environment-friendly with low cost, thereby being easy to popularize and apply.

Description

technical field [0001] The invention relates to a modified plant fiber powder and a preparation method thereof, in particular to a raw material of a wood-plastic composite material and a preparation method thereof. Background technique [0002] In recent years, people have paid more and more attention to the research and exploration of various wood-plastic composite materials, and their development is very strong. A lot of work has been done on how to effectively overcome the compatibility between polar plant fibers and non-polar organic resins, and a variety of different coupling (cross)linking agents have been developed, such as ZL02157949.0 for powdery plant fiber powder The surface is modified to improve its integration with organic resins. However, this method only modifies the surface of the plant fiber, and does not infiltrate and strengthen the interior of the plant fiber that has been damaged in performance, so it cannot obtain better mechanical properties of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08K5/14C08L101/02C08L63/00C08L61/06
Inventor 张国栋
Owner 张国栋
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