JP2005097461A - Resin composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin composition which has flame retardancy and gives a wood-like texture. <P>SOLUTION: The resin composition is formed by incorporation of 10-200 pts. wt. of a wood flour impregnated with a flame-retardant liquid into 100 pts. wt. of a vinyl chloride resin or olefin resin. It is preferable that the wood flour prior to the impregnation of the flame-retardant liquid is ≤100 mesh and has a water content of ≤5%. The flame-retardant liquid is a chlorinated paraffin, phosphate, etc. Where deemed necessary, an oxidation inhibitor, crosslinking agent, crosslinking aid, processing auxiliary, filler (flame retardant, titanium oxide, carbon, calcium carbonate, etc.), colorant, foaming agent, or the like is incorporated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a resin composition obtained by blending wood flour into a base resin.

In order to obtain a resin molding material having a wood texture, a resin composition is known in which wood powder obtained by processing wood or wood waste material is blended with a thermoplastic resin (see, for example, Patent Document 1). Such resin compositions include terraces, balconies, deck materials, building floors such as restaurants, station plazas and park promenades, wooden bridges over ponds, springs, etc., wooden paths passed to wetlands in natural parks, etc. It is intended to be used for.
JP 2002-332411 A (first page)

  By the way, in the said prior art, since wood powder is a combustible material, it has the problem of being easy to burn. Therefore, we considered adding flame retardant to the resin to make it flame retardant (resin flame retardant of the resin itself), but the wood powder processed from wood is easy to burn, so it does not solve the problem. It was.

  In addition, this inventor has discovered that the intensity | strength of a resin composition tends to fall by putting wood powder and a flame retardant separately in this in resin.

  This invention is made | formed in view of the situation mentioned above, and makes it a subject to provide the resin composition with the wood texture which has a flame retardance.

  The resin composition of the present invention according to claim 1, which has been made to solve the above problems, comprises 10 to 200 parts by weight of wood powder impregnated with a flame retardant liquid with respect to 100 parts by weight of vinyl chloride resin or olefin resin. It is characterized by that. According to the present invention having such a feature, it is possible to obtain a resin composition having both flame retardancy and wood texture, without requiring the resin itself to be flame retardant. In addition, more wood powder can be blended by impregnating the wood powder with a flame retardant liquid.

  The wood flour is obtained by processing wood or wood waste, and the wood flour is used in an amount of 10 to 200 parts by weight because the wood texture decreases when the amount is less than 10 parts by weight (even if the amount is less than 10 parts by weight). There is no particular problem, but 10 parts by weight was used in order to obtain a sufficient wood texture). Moreover, it is because a process will become difficult when it exceeds 200 weight part. Examples of the flame retardant liquid include chlorinated paraffin and phosphate. The polymerization degree of the vinyl chloride resin is assumed to be a general polymerization degree of 800 to 1400. Examples of the olefin resin include polyolefins such as ethylene-ethyl acrylate copolymer (EEA), ethylene-vinyl acetate copolymer (EVA), polyethylene (PE), and the like. If necessary, stabilizers, antioxidants, crosslinking agents, crosslinking aids, processing aids, fillers (flame retardants, titanium oxide, carbon, calcium carbonate, etc.), colorants, foaming agents and the like are blended. Shall.

  Since wood flour can be used as a filler, the amount of filler and the amount of colorant can be reduced, and a relatively inexpensive resin composition can be provided. According to the present invention, there is no reduction in strength due to the blending of wood flour.

  The resin composition of the present invention is not particularly limited, but is preferably applied to building materials, films (sheets), cable covering materials, and the like.

  The resin composition of the present invention according to claim 2 is the resin composition according to claim 1, wherein the wood powder before impregnating the flame retardant liquid is 100 mesh or less and a water content is 5% or less. It is characterized by that. According to the present invention having such characteristics, a resin composition having good physical properties is obtained. That is, the reason why the wood powder is 100 mesh or less is that when it exceeds 100 mesh, the characteristics deteriorate or the appearance deteriorates. Further, the reason why the moisture content of the wood flour is set to 5% or less is that if it exceeds 5%, the foaming of water becomes severe at the time of processing and the characteristics are deteriorated.

  According to this invention described in Claim 1, there exists an effect that the resin composition with the wood texture which has a flame retardance can be provided. Moreover, by making it flame-retardant, it has the effect that it can mix | blend many wood flour and can give a wooden texture further (the effect that it can contribute also to the effective utilization of wood waste material).

  According to the second aspect of the present invention, there is an effect that it is possible to provide a resin composition that is further excellent in characteristics.

  Hereinafter, the resin composition of the present invention will be described. The resin composition of the present invention comprises 10 to 200 parts by weight of wood powder impregnated with a flame retardant liquid such as chlorinated paraffin or phosphate ester with respect to 100 parts by weight of vinyl chloride resin. Moreover, the resin composition used as the other example of this invention mix | blends 10-200 weight part of wood flour which impregnated the said flame-retardant liquid with respect to 100 weight part of olefin resins. In addition to the above blending, stabilizers, antioxidants, crosslinking agents, crosslinking aids, processing aids, fillers, and the like are blended in necessary amounts. The wood powder before impregnating with the flame-retardant liquid is preferably one having a size of 100 mesh or less and a moisture content of 5% or less.

  In the resin composition of the present invention, the wood powder for producing a wood texture is different from the conventional one, that is, unlike the wood powder that remains flammable, the flame retardant liquid has flame retardancy. Is a feature. Therefore, the point that it is easy to burn, which has been a problem in the past, is solved by the resin composition of the present invention. The present invention has an advantage that it can provide a resin composition having flame retardancy and wood texture.

  In addition, it goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

  Specific examples of the resin composition of the present invention (two types when the base resin is a vinyl chloride resin and an olefin resin) will be described in comparison with comparative examples.

  <Example 1> As shown in Table 1, Example 1 is a plasticizer (based on 100 parts by weight of vinyl chloride resin (PVC (TH-1300 (manufactured by Taiyo PVC)) as a base resin) as shown in Table 1. DINP (manufactured by Sekisui Chemical Co., Ltd.): 50 parts by weight, stabilizer (RUP (manufactured by Asahi Denka): the same below) 5 parts by weight, wood flour (100 mesh or less and water content 5% or less) Pre-impregnated with chlorinated paraffin: the same applies below) 10 parts by weight.

  <Example 2> As shown in Table 1, Example 2 contains 50 parts by weight of a plasticizer, 5 parts by weight of a stabilizer, and 50 parts by weight of wood flour with respect to 100 parts by weight of a vinyl chloride resin as a base resin. It will be.

  <Example 3> As shown in Table 1, in Example 3, 50 parts by weight of a plasticizer, 5 parts by weight of a stabilizer and 100 parts by weight of wood flour are blended with 100 parts by weight of a vinyl chloride resin as a base resin. It will be.

  <Example 4> As shown in Table 1, in Example 4, 50 parts by weight of a plasticizer, 5 parts by weight of a stabilizer, and 200 parts by weight of wood flour are blended with respect to 100 parts by weight of a vinyl chloride resin as a base resin. It will be.

  <Example 5> As shown in Table 3, in Example 5, magnesium hydroxide (Kisuma 5A (Kyowa Chemical) was used with respect to 100 parts by weight of a polyolefin resin (A1100 (manufactured by JPO)) as a base resin: the same applies hereinafter). (Made by Industry): Same as below) 100 parts by weight, antioxidant (Irganox 1010 (Ciba Specialty Chemicals): same as below) 1 part by weight, wood flour (100 mesh or less and water content 5% or less) Previously impregnated with chlorinated paraffin: the same applies below) 10 parts by weight.

  <Example 6> As shown in Table 3, Example 6 contains 100 parts by weight of magnesium hydroxide, 1 part by weight of antioxidant and 50 parts by weight of wood flour with respect to 100 parts by weight of polyolefin resin as the base resin. It is made.

  <Example 7> As shown in Table 3, Example 7 contains 100 parts by weight of magnesium hydroxide, 1 part by weight of antioxidant and 100 parts by weight of wood flour with respect to 100 parts by weight of polyolefin resin as the base resin. It is made.

  <Example 8> As shown in Table 3, Example 8 contains 100 parts by weight of magnesium hydroxide, 1 part by weight of antioxidant and 200 parts by weight of wood flour with respect to 100 parts by weight of polyolefin resin as the base resin. It is made.

  <Comparative Example 1> As shown in Table 2, Comparative Example 1 is a plasticizer (based on 100 parts by weight of vinyl chloride resin (PVC (TH-1300 (manufactured by Taiyo PVC)) as a base resin) as a base resin. DINP (manufactured by Sekisui Chemical Co., Ltd.): 50 parts by weight, stabilizer (RUP (manufactured by Asahi Denka): the same below) 5 parts by weight, and 10 parts by weight of general wood flour.

  <Comparative Example 2> As shown in Table 2, Comparative Example 2 contains 50 parts by weight of plasticizer, 5 parts by weight of stabilizer, and 50 parts by weight of general wood flour with respect to 100 parts by weight of vinyl chloride resin as the base resin. It is made.

  <Comparative Example 3> As shown in Table 2, Comparative Example 3 contains 50 parts by weight of plasticizer, 5 parts by weight of stabilizer, and 100 parts by weight of general wood flour with respect to 100 parts by weight of vinyl chloride resin as the base resin. It is made.

  <Comparative Example 4> As shown in Table 2, Comparative Example 4 contains 50 parts by weight of a plasticizer, 5 parts by weight of a stabilizer, and 200 parts by weight of general wood flour with respect to 100 parts by weight of a vinyl chloride resin as a base resin. It is made.

  <Comparative Example 5> As shown in Table 4, Comparative Example 5 is based on magnesium hydroxide (Kisuma 5A (Kyowa Chemical Co., Ltd.) with respect to 100 parts by weight of polyolefin resin (A1100 (manufactured by JPO)) as the base resin: (Industry): Same as below) 100 parts by weight, antioxidant (Irganox 1010 (manufactured by Ciba Specialty Chemicals): same as below) 1 part by weight, 10 parts by weight of general wood flour.

  <Comparative Example 6> As shown in Table 4, Comparative Example 6 is 100 parts by weight of magnesium hydroxide, 1 part by weight of antioxidant and 50 parts by weight of general wood flour with respect to 100 parts by weight of polyolefin resin as the base resin. It is a blended product.

  <Comparative Example 7> As shown in Table 4, Comparative Example 7 is 100 parts by weight of magnesium hydroxide, 1 part by weight of antioxidant and 100 parts by weight of general wood flour with respect to 100 parts by weight of polyolefin resin as the base resin. It is a blended product.

  <Comparative Example 8> As shown in Table 4, Comparative Example 8 is 100 parts by weight of magnesium hydroxide, 1 part by weight of antioxidant and 200 parts by weight of general wood flour with respect to 100 parts by weight of polyolefin resin as the base resin. It is a blended product.

  The plasticizer may be DOP. The stabilizer may be a lead-free stabilizer. The above composition is an example.

  Resin compositions are produced based on the compositions of Examples 1 to 8 and Comparative Examples 1 to 8, and flame retardancy is evaluated for each. The evaluation of flame retardancy is based on the Japanese Industrial Standard JIS C 3005 flame retardancy test (tilt test: tilting the sample by 60 °). If not, it shall be judged as “Fail”.

  According to the evaluation results of flame retardancy in Table 1, since the resin compositions of Examples 1 to 4 are all self-digesting, the resin composition has flame retardancy and has a woody texture. I understand. If wood powder impregnated with a flame retardant liquid is used, more wood powder can be blended.

  According to the evaluation results of flame retardancy in Table 2, the resin compositions of Comparative Examples 1 and 2 have a result that they are self-digestible. This is considered to be a result obtained from the vinyl chloride resin. Accordingly, it can be seen that the resin composition has a wood texture but lacks sufficient flame retardancy. On the other hand, since the resin compositions of Comparative Examples 3 to 4 have no self-digestibility, it can be seen that the resin composition lacks flame retardancy even though it has a wood texture (general wood flour has a limit on its blending amount). Low).

  According to the evaluation results of flame retardancy in Table 3, since all of the resin compositions of Examples 5 to 8 are self-digesting, the resin composition has flame retardancy and has a woody texture. I understand. If wood powder impregnated with a flame retardant liquid is used, more wood powder can be blended.

According to the evaluation results of flame retardancy in Table 4, the resin composition of Comparative Example 5 has a result that it is self-digestible. This is a polyolefin that is a base resin with a small amount of general wood flour. This is considered to be a result obtained from magnesium hydroxide blended in the resin. Accordingly, it can be seen that the resin composition has a wood texture but lacks sufficient flame retardancy. On the other hand, since the resin compositions of Comparative Examples 6 to 8 are not self-digesting, it can be seen that the resin composition lacks flame retardancy although it has a wood texture (general wood flour has a limit on its blending amount). Low).

Claims (2)

A resin composition comprising 10 to 200 parts by weight of a wood powder impregnated with a flame-retardant liquid with respect to 100 parts by weight of a vinyl chloride resin or an olefin resin. The resin composition according to claim 1,
The resin composition, wherein the wood powder before impregnating the flame-retardant liquid is 100 mesh or less and a moisture content is 5% or less.